CN101455146B - Walk-behind type paddy-field work machine - Google Patents

Walk-behind type paddy-field work machine Download PDF

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Publication number
CN101455146B
CN101455146B CN2008100907032A CN200810090703A CN101455146B CN 101455146 B CN101455146 B CN 101455146B CN 2008100907032 A CN2008100907032 A CN 2008100907032A CN 200810090703 A CN200810090703 A CN 200810090703A CN 101455146 B CN101455146 B CN 101455146B
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China
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car
seedling
wheel
walk
work machine
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CN2008100907032A
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CN101455146A (en
Inventor
小林鉴明
久保下竹男
大利公彦
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Kubota Corp
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Kubota Corp
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Priority claimed from JP2007321048A external-priority patent/JP5192796B2/en
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Abstract

The invention provides an easy-operation walking type transplanter, comprising a running wheel (1), a transplanting part with two transplanting mechanisms (6,6) which are horizontally arranged along the vehicle body, a seedlings carrying stage capable of freely transferring the seedlings back and forth along the horizontal direction of the vehicle body and a grounding hull (7). A wheel driving box (10) for supporting the running wheel in free-driving way is set at lateral side leaning towards the vehicle body relative to the running wheel; and a gear box body (15) for transferring the output of the engine (2) to the wheel driving box is set so that: a gear box part (22) in the gear box body leans towards the vehicle body lateral side opposite to the side of the wheel running box relative to the running wheel; and a transmission box (19) for transferring the driving power of the engine to a seedlings lateral feeding mechanism (100) capable of transferring the seedlings carrying stage back and forth is set at the vehicle body lateral side leaning towards the side of the wheel driving box relative to the running wheel.

Description

Walk-behind type paddy-field work machine
Technical field
The present invention relates to a kind of walk-behind type paddy-field work machine, this walk-behind type paddy-field work machine has a running vehicle wheel, and have transplanting portion, this transplanting portion have two transversely arranged rice transplanting mechanisms along car body, can be at the seedling carrying stand and the ground connection hull transversely freely back and forth transferred of car body.
Background technology
In the past, as above-mentioned walk-behind type paddy-field work machine, the walk-behind type paddy-field work machine of record in the existing for example patent documentation 1.The walk-behind type paddy-field work machine of record has the body of travelling in patent documentation 1, and this body that travels is provided with a wheel in the centre of body fore-and-aft direction and left and right directions.In this travelled body, suspension support had the hull of whole ground of transplanting portion usefulness on the tubular bracing frame that rearward extends setting from the both lateral sides of wheel.Be provided with a pair of seedling-transplanting device at the rear portion of the body that travels.Rear portion at the body that travels is provided with seedling carrying stand, and this seedling carrying stand moves back and forth in the horizontal, and the rice shoot that will be positioned on the seedling carrying stand is supplied with downwards
The real public clear 62-13451 communique of patent documentation 1:JP.
In above-mentioned walk-behind type paddy-field work machine, owing to come the support machine body weight and travel by a running vehicle wheel, therefore, when serious unbalance or body gravity uprises when the balance of left and right sides weight, be easy to generate tilting or instability of car body, therefore handle the difficulty that becomes.In addition, when weight when the projecting degree in the cross-car outside is big, be easy to generate and rotate the inertia that travels, therefore handle the difficulty that becomes.
In addition, as conventional art, a kind of single wheel walk-behind type paddy-field work machine is arranged, this single wheel walk-behind type paddy-field work machine is provided with control crank at the rear portion of the body that travels, and described control crank has right handle portion and left handle portion.For example in patent documentation 2, a kind of walk-behind type paddy-field work machine is disclosed, described walk-behind type paddy-field work machine links support (Fig. 2 of patent documentation 2 11) and waves door shape and is provided with elevator apparatus of wheel (Fig. 1 of patent documentation 2 12) between the case (Fig. 1 of patent documentation 2 7), move up and down wheel by this elevator apparatus of wheel, realize the lifting of body.
Patent documentation 2:JP spy opens flat 5-292815 communique (Fig. 1 and Fig. 2).
In the walk-behind type paddy-field work machine of patent documentation 2, the handle that is used to operate elevator apparatus of wheel (Fig. 1 of patent documentation 2 12) is set at from the control crank of seedling carrying stand (Fig. 1 of patent documentation 2 17) front side (patent documentation 2 13,14) position far away.Consequently, when wanting the lifting body, hand must leave the handle that control crank removes to operate elevator apparatus of wheel.
As described in patent documentation 2, if adopt single wheel (Fig. 1 of patent documentation 2 8) to constitute walk-behind type paddy-field work machine, for example when carrying out the rice transplanting operation, mainly be to utilize the left and right sides hull contact with ground (Fig. 1 of patent documentation 2 38,39) and the operation of control crank to revise tilting of body, stablize body thus, for example, when travelling operation, then revise tilting of body, thereby stablize body by the operation of control crank.Therefore, hand leaves control crank and when removing to operate the handle of elevator apparatus of wheel when carrying out the rice transplanting operation, exist the worry of body instability, rice transplanting deterioration in accuracy, and, hand leaves control crank and when removing to operate the handle of elevator apparatus of wheel, organism tumbles and waits danger when exercising.
Therefore, be difficult to lifting body when carrying out the rice transplanting operation, but must interrupt after the rice transplanting operation etc. lifting body again.And, be difficult to lifting body when travelling, must stop behind the body lifting body again.
Summary of the invention
First purpose of the present invention is to provide a kind of manipulation to be easy to walk-behind type paddy-field work machine.
Second purpose of the present invention is to provide a kind of single wheel walk-behind type paddy-field work machine, process oil press operation device when can with the hands stablize body, and can improve the operability of hydraulic operation device.
For realizing above-mentioned first purpose, the following formation of the present invention.
A kind of walk-behind type paddy-field work machine of the present invention, have a running vehicle wheel, and have transplanting portion, this transplanting portion have two rice transplanting mechanisms arranging along cross-car, can be at the seedling carrying stand and the ground connection hull transversely freely back and forth transferred of car body, it is characterized in that
With described running vehicle wheel driving freely in addition supported wheel driving box of mode, with respect to a side of described running vehicle wheel deflection cross-car and be provided with;
The output of engine is passed to the gearbox body of described wheel drive case, with the gearbox portion in this gearbox body with respect to the described running vehicle wheel deflection cross-car side opposite and be provided with the residing side of described wheel drive case;
The driving force of described engine is passed to the rice shoot transverse feed mechanism that described seedling carrying stand is back and forth transferred transmission case the bottom be connected from the described gearbox body rearward end with described car body main support described wheel drive case the same side to the car body main support of the pair of right and left that the car body rear extension forms, thereby described transmission case is partial to the cross-car side identical with the residing side of described wheel drive case with respect to described running vehicle wheel and is provided with.
According to this present invention, wheel drive case, gearbox body and transmission case can make the left and right sides weight of the car that travels automatically keep balance easily.
Promptly, the gearbox portion of gearbox body is positioned at the Heavy Weight at other positions of weight ratio at its inner position, can think the weight of gearbox body to concentrate on being provided with on the position of gearbox portion and act on the car that travels automatically that the weight of gearbox body acts on the car that travels automatically with respect to the running vehicle wheel deflection cross-car side opposite with the active side of the weight of wheel drive case and transmission case.The weight of wheel drive case and transmission case acts on the car that travels automatically with respect to the running vehicle wheel deflection cross-car side opposite with the weight active side of gearbox body.
Therefore, can make the left and right sides weight of the car that travels automatically keep good balance, be difficult to produce car body tilt or unstable, handle and become easily, thus, but can access the walk-behind type paddy-field work machine of high-efficient homework.
In addition, a kind of walk-behind type paddy-field work machine of the present invention has a running vehicle wheel, and has transplanting portion, this transplanting portion has along two rice transplanting mechanisms of cross-car arrangement, can it is characterized in that at the seedling carrying stand and the ground connection hull transversely freely back and forth transferred of car body
With described running vehicle wheel driving freely in addition supported wheel driving box of mode, with respect to a side of described running vehicle wheel deflection cross-car and be provided with;
The output of engine is passed to the gearbox body of described wheel drive case, with the gearbox portion in this gearbox body with respect to the described running vehicle wheel deflection cross-car side opposite and be provided with the residing side of described wheel drive case;
The operator that is used for described transplanting portion is provided with respect to the described running vehicle wheel deflection cross-car side identical with the residing side of described wheel drive case.
According to this present invention, wheel drive case, gearbox body and operator can make the left and right sides weight of the car that travels automatically keep balance easily.
That is, the weight of gearbox body acts on the car that travels automatically with respect to the running vehicle wheel deflection cross-car side opposite with the active side of the weight of wheel drive case and operator.The weight of wheel drive case and operator acts on the car that travels automatically with respect to the running vehicle wheel deflection cross-car side opposite with the weight active side of gearbox body.
Therefore, can make the left and right sides weight of the car that travels automatically keep good balance, be difficult to produce car body tilt or unstable, and handle and become easily, thereby can access the walk-behind type paddy-field work machine that can carry out operation efficiently.
In addition, a kind of walk-behind type paddy-field work machine of the present invention has a running vehicle wheel, and has transplanting portion, this transplanting portion has along two rice transplanting mechanisms of cross-car arrangement, can it is characterized in that at the seedling carrying stand and the ground connection hull transversely freely back and forth transferred of car body
With described running vehicle wheel driving freely in addition supported wheel driving box of mode, with respect to a side of described running vehicle wheel deflection cross-car and be provided with;
The output of engine is passed to the gearbox body of described wheel drive case, with the gearbox portion in this gearbox body with respect to the described running vehicle wheel deflection cross-car side opposite and be provided with the residing side of described wheel drive case;
The car body fore-and-aft direction of pair of right and left towards the car body main support, the interval of car body main support on cross-car with this pair of right and left is then more little to car body main support front more, and car body main support front on cross-car, be positioned at ground connection hull and wheel lift valve interlinked mechanism the inboard configuration and be provided with.
According to this present invention, wheel drive case and gearbox body can make the left and right sides weight of the car that travels automatically keep balance easily.
That is, the weight of gearbox body acts on the car that travels automatically with respect to the running vehicle wheel deflection cross-car side opposite with the active side of the weight of wheel drive case.The weight of wheel drive case acts on the car that travels automatically with respect to the running vehicle wheel deflection cross-car side opposite with the weight active side of gearbox body.
In addition, according to this invention, can suppress the inertia that rotation that the car body main support of pair of right and left causes is travelled.
That is, the car body main support of pair of right and left is done one's utmost to be close to the center on the car body left and right directions and is set up, and the weight that can suppress the car body main support is outstanding to the cross-car outside.
Therefore, can make the left and right sides weight of the car that travels automatically keep good balance, be difficult to produce car body tilt or unstable, and be not easy to produce the inertia that the rotation that causes because of the car body main support is travelled, handle thus and become easy, can access the walk-behind type paddy-field work machine that can carry out operation efficiently.
In addition, in the invention described above, the car body main support of described pair of right and left contains transmission device, and described transmission device is used for the output of described engine is passed to described transplanting portion.
According to this invention, the weight of pair of right and left car body main support increases, and can suppress to rotate the inertia that travels by this weight, and operation becomes easy.
That is, the car body main support of pair of right and left is done one's utmost to be close to the center on the car body left and right directions and is set up, and the main weight that can suppress the car body main support is outstanding to the cross-car outside.
In addition, a kind of walk-behind type paddy-field work machine of the present invention has a running vehicle wheel, and has transplanting portion, this transplanting portion has along two rice transplanting mechanisms of cross-car arrangement, can it is characterized in that at the seedling carrying stand and the ground connection hull transversely freely back and forth transferred of car body
With described running vehicle wheel driving freely in addition supported wheel driving box of mode, with respect to a side of described running vehicle wheel deflection cross-car and be provided with;
The output of engine is passed to the gearbox body of described wheel drive case and described transplanting portion, with the gearbox portion in this gearbox body with respect to the described running vehicle wheel deflection cross-car side opposite and be provided with the residing side of described wheel drive case;
Travelling of described gearbox body is arranged on the car body fore-and-aft direction with output shaft with output shaft and transplanting portion.
According to this invention, wheel drive case and gearbox body can make the left and right sides weight of the car that travels automatically keep balance easily.
That is, the weight of gearbox body acts on the car that travels automatically with respect to the running vehicle wheel deflection cross-car side opposite with the active side of the weight of wheel drive case.The weight of wheel drive case acts on the car that travels automatically with respect to the running vehicle wheel deflection cross-car side opposite with the weight active side of gearbox body.
In addition, according to this invention, being used in the gearbox body to travelling with the driven off by shaft gearbox of output portion, being used for to the transplanting portion driven off by shaft gearbox of output portion, all be mounted with alap the setting highly, seek the centre of gravityization of gearbox body thus, can suppress the lifting of the body gravity that produces because of the weight of gearbox body.
Therefore, when can make the car left and right sides weight of travelling automatically keep good balance, the center of gravity step-down, be difficult to thus to produce car body tilt or unstable, operation becoming easily, can access high efficiency walk-behind type paddy-field work machine.
In addition, in the present invention, with a pair of support portion that described wheel drive case is supported in the mode of freely shaking up and down, decentralized configuration is arranged on the described gearbox body in the both sides of the input gear of described wheel drive case.
According to this invention, will but supporting, the two ends formula finish by the support of gearbox body the wheel drive case, and formula support in described two ends is meant in the both sides of the input gear of wheel drive case and is supported.
Therefore, can make gearbox body firm, can obtain the walk-behind type paddy-field work machine that can stably travel the support of wheel drive case.
For realizing above-mentioned second purpose, the following formation of the present invention.
(1) Fa Ming formation:
Of the present invention first is characterized as, a kind of single wheel walk-behind type paddy-field work machine is provided, described single wheel walk-behind type paddy-field work machine is provided with control crank at the rear portion of its body that travels, this control crank has right handle portion and left handle portion, and, be provided with the hydraulic operation device near described right handle portion or left handle portion, this hydraulic operation device is used to operate the oil pressure device that is installed on the body that travels.
The effect of invention:
In accordance with a first feature of the invention, can enough hands of holding the handle portion that is provided with hydraulic operation device side come process oil press operation device, can operate the hydraulic operation device holding under the state of the right handle portion of handling handle and left handle portion with two.Thus, can not leave operation hydraulic operation device under the state of right handle portion or left handle portion, can enough two hold right handle portion and left handle portion and process oil press operation device when stablizing body at hand.Consequently, can need not to interrupt operation hydraulic operation device under the situation of rice transplanting operation, even and do not stop body also can process oil press operation device, thereby improve the operating characteristics of hydraulic operation device.
The effect of invention:
In accordance with a first feature of the invention, can be when carrying out the rice transplanting operation process oil press operation device, can be while travelling process oil press operation device, thereby can improve the operability of the rice transplanting operation and the operation of travelling.
(2) Fa Ming formation
Of the present invention second is characterized as the single wheel walk-behind type paddy-field work machine that provides as described below, promptly, as the described single wheel walk-behind type paddy-field work machine of first feature of the present invention, wherein, can be to use posture and accommodate posture the posture changing of described control crank, described use posture is meant described right handle portion and left handle portion posture backward, and the described posture of accommodating is meant that described right handle portion and left handle portion are accommodated in the posture than the forward side of described use posture.
The effect of invention:
According to second feature of the present invention, have the effect as above-mentioned (1) record identical with first feature of the present invention, and, also have effect as described below.
That is, according to second feature of the present invention, in transportation or keeping during walk-behind type paddy-field work machine, by with the posture changing of control crank for accommodating posture, control handle can be contained in the front side compactly, shorten the total length of walk-behind type paddy-field work machine thus.Be in when accommodating posture, can avoiding, can prevent the obstacle when handle portion of state becomes transportation or keeping backward of being in of control crank thus as being in right handle portion and the left handle portion state backward when using posture.
The invention effect:
According to second feature of the present invention, have identical with first feature of the present invention as above-mentioned (1) described invention effect in, also have invention effect as described below.
That is, according to second feature of the present invention, can in transportation or keeping walk-behind type paddy-field work machine be contained in front and back compactly, thus, the transportation of walk-behind type paddy-field work machine or keeping etc. becomes easy.
(3) Fa Ming formation:
The of the present invention the 3rd is characterized as the single wheel walk-behind type paddy-field work machine that provides as described below, promptly, as first feature of the present invention or the described single wheel walk-behind type paddy-field work machine of second feature, wherein, with right handles frame and left handle frame described control crank is supported on the body that travels, and be provided with action bars and support element, described action bars is installed in adjusting portion on the body that travels in order to operation, described support element is fixed via described right handles frame and left handle frame, and on described support element described action bars is installed.
The effect of invention:
According to the 3rd feature of the present invention, have the invention effect as above-mentioned (1), (2) record identical with first feature of the present invention or second feature, and, also have effect as described below.
That is, according to the 3rd feature of the present invention, can be enough support element when strengthening right handles frame and left handle frame, this support element can also be come dual-purpose as the member of fitting operation bar.Thus, for example compare with the situation of the member that is provided for the fitting operation bar separately, can simplify the structure of walk-behind type paddy-field work machine, simultaneously, by fitting operation bar on the support element that can guarantee strong intensity, fitting operation bar firmly, thus, action bars can not rock shakiness when operation, easily the operating operation bar.
The invention effect:
According to the 3rd feature of the present invention, have identically with first feature of the present invention or second feature time as the described invention effect in above-mentioned (1), (2), also have invention effect as described below.
That is,, can reduce the manufacturing cost of walk-behind type paddy-field work machine according to the 3rd feature of the present invention, and, the operability of action bars can be improved.
(4) Fa Ming formation:
The of the present invention the 4th is characterized as the single wheel walk-behind type paddy-field work machine that provides as described below,, as the described single wheel walk-behind type paddy-field work machine of the 3rd feature of the present invention, wherein, forms the bar guide part at described support element that is, and this bar guide part is in order to the described action bars that leads.
The effect of invention:
According to the 4th feature of the present invention, have the invention effect as above-mentioned (3) record identical with the 3rd feature of the present invention, and, also have effect as described below.
That is,, the bar guide part of support element as action bars can be worked, for example, compare, can simplify the structure of walk-behind type paddy-field work machine with the situation of the bar guide part of the action bars that is provided for separately leading according to the 4th feature of the present invention,
The invention effect:
According to the 4th feature of the present invention, have identically with the 4th feature of the present invention the time as above-mentioned (3) described invention effect, also have invention effect as described below.
That is,, can further reduce the manufacturing cost of walk-behind type paddy-field work machine according to the 4th feature of the present invention.
(5) Fa Ming structure:
The of the present invention the 5th is characterized as the single wheel walk-behind type paddy-field work machine that provides as described below, promptly, as the described single wheel walk-behind type paddy-field work machine of of the present invention first or second feature, wherein, through right handles frame and left handle frame described control crank is supported on the body that travels, and be provided with control lever shaft and support element, described control lever shaft is via right handles frame and left handle frame and be set up, described support element is via right handles frame and left handle frame and be fixed, to be used to regulate the adjusting rod that is installed in the governor motion on the body that travels and be supported on described control lever shaft, with described support element be arranged on described control lever shaft near.
The effect of invention:
According to the 5th feature of the present invention, have in the same manner as above-mentioned with of the present invention first or second feature
(1), (2) record the invention effect, and, also have effect as described below.
That is, according to the 5th feature of the present invention, can be enough support element strengthen right handles frame and left handle frame, simultaneously, by this support element is arranged on control lever shaft near, control lever shaft can be arranged on the support element of guaranteeing strong intensity near.Thus, can enough support elements strengthen effectively control lever shaft near.Its result, by the adjusted bar, the enough support element supporting roles of energy are in the active force of control lever shaft, and thus, adjusting rod can not rock shakiness when operation, easily the adjusted bar.
The invention effect:
According to the 5th feature of the present invention, with of the present invention first or second feature in the same manner, when having, also have invention effect as described below as above-mentioned (1), (2) described invention effect.
That is,, when can strengthen right handles frame and left handle frame, improve the operability of adjusting rod according to the 5th feature of the present invention.
Description of drawings
Fig. 1 is the unitary side view of the walk-behind type paddy-field work machine of first embodiment.
Fig. 2 is the whole vertical view of this walk-behind type paddy-field work machine.
Fig. 3 is the vertical view of vehicle body hanger.
Fig. 4 is the rearview of vehicle body hanger in rice transplanting mechanism configuration portion.
Fig. 5 is the line chart of transmission device.
Fig. 6 is the engine of car and the gearbox body vertical view in configuration portion that travels automatically.
Fig. 7 is the end view of front portion of car of travelling automatically.
Fig. 8 is the cutaway view of gearbox body and wheel drive case.
Fig. 9 A is the end view of interlinked mechanism under ground connection hull propradation; Fig. 9 B is the end view of interlinked mechanism under ground connection hull decline state.
Figure 10 is the vertical view of ground connection hull supporting construction and operator configuration portion.
Figure 11 is the end view of ground connection hull supporting construction.
Figure 12 A is the end view of locking mechanism under the hood closed condition; 12B is the end view of locking mechanism under the hood open mode.
Figure 13 is the vertical view of locking mechanism.
Figure 14 is the end view of transplanting portion.
Figure 15 is the rearview of rice transplanting mechanism.
Figure 16 is the vertical view of seedling carrying stand bottom.
Figure 17 is the end view of seedling carrying stand, rice shoot transverse feed mechanism and rice shoot longitudinal feed mechanism.
Figure 18 is the end view of seedling carrying stand, rice shoot transverse feed mechanism and rice shoot longitudinal feed mechanism.
Figure 19 is the stereogram of connector.
Figure 20 is the vertical view of rice shoot transverse feed mechanism and rice shoot longitudinal feed mechanism.
Figure 21 A is the end view of speed changing portion under fast state between strain; Figure 21 B is the end view of speed changing portion under lower-speed state between strain.
Figure 22 is the vertical view of speed changing portion between strain.
Figure 23 A, Figure 23 B be the traverse feed speed changing portion end view.
Figure 24 has the unitary side view that other implement the walk-behind type paddy-field work machine of structure.
Figure 25 is the rearview of line indicating device.
Figure 26 is the cutaway view of base member mounting structure.
Figure 27 is the unitary side view of the walk-behind type paddy-field work machine of second embodiment.
Figure 28 is the whole vertical view of this walk-behind type paddy-field work machine.
Figure 29 is the end view of this walk-behind type paddy-field work machine front portion.
Figure 30 is the vertical view of this walk-behind type paddy-field work machine front portion.
Figure 31 is the kinematic scheme of this walk-behind type paddy-field work machine.
Figure 32 is the unitary side view of gearbox body.
Figure 33 is the longitudinal profile end view of gearbox body.
Figure 34 is near the cutaway view that reaches the drive mechanism of driving transmission agent of the output shaft of expression engine.
Figure 35 is the cutaway view of the drive mechanism of expression rice transplanting transmission system.
Figure 36 is that wheel supports near the horizontal section vertical view of case.
Figure 37 is near the cutaway view the gear cap between strain.
Figure 38 is near the cutaway view of traverse feed transmission case in left side.
Figure 39 is near the cutaway view of traverse feed transmission case on right side.
Figure 40 is near the longitudinal profile front view the oil pressure pump.
Figure 41 is near the longitudinal profile end view the oil pressure pump.
Figure 42 is near the right side view the lifting cylinder body.
Figure 43 is the end view of After-Body of travelling.
Figure 44 is the vertical view of After-Body of travelling.
Figure 45 is the end view of handle frame front portion.
Figure 46 is the longitudinal profile end view of the structure of explanation seedling taking seedling amount governor motion and hull height governor motion.
Figure 47 is the horizontal section vertical view of the structure of explanation seedling taking seedling amount governor motion.
Figure 48 is the longitudinal profile rearview of the structure of explanation hull height governor motion.
Figure 49 is near the end view the control crank in using posture.
Figure 50 is near the end view the control crank in accommodating posture.
Figure 51 is near the vertical view of left hand grip portion of control crank.
Figure 52 is the end view of the supporting construction of explanation ground connection fore-body.
Figure 53 is the vertical view of the supporting construction of explanation ground connection fore-body.
Embodiment
Below, embodiments of the present invention are described with reference to the accompanying drawings.
(first embodiment)
Fig. 1 is the unitary side view of the walk-behind type paddy-field work machine in the embodiments of the invention.Fig. 2 is the whole vertical view of the walk-behind type paddy-field work machine in the embodiment of the invention.As shown in these figures, walk-behind type paddy-field work machine in the present embodiment has the structure of travelling automatically by a running vehicle wheel that freely drives 1, and has the car that travels automatically, this car that travels automatically has engine 2 that is arranged on the car body leading section and the manoeuvre portion 4 that is arranged on the car body rearward end and has control crank 3, also have transplanting portion 8, this transplanting portion 8 has and is being supported in two rice transplanting mechanisms 6 on the vehicle body hanger 5 in the mode on the cross-car of being arranged near the rear portion of described running vehicle wheel 1,6 and be supported in two ground connection hulls 7 on the bottom of described vehicle body hanger 5 in the mode on the cross-car of being arranged in, 7.
This walk-behind type paddy-field work machine carries out two row rice transplanting operations.
Promptly, mode is supported on the free end of wheel drive case 10 described running vehicle wheel 1 to drive freely, by shaking with the described wheel drive case 10 of oil hydraulic cylinder 11 operations, make described wheel drive case 10 to carry out lifting with respect to vehicle body hanger 5, wherein, and described wheel drive case 10 is supported on the described vehicle body hanger 5 in the mode of freely shaking up and down.When making that running vehicle wheel 1 carries out lifting, vehicle body hanger 5 is carried out lifting with respect to ground, and transplanting portion 8 carries out lifting between the non-job state of rising that decline job state that described two ground connection hulls 7,7 contact with ground and described ground connection hull 7 rise from ground.Transplanting portion 8 is in the decline job state and when the car that travels was automatically travelled, transplanting portion 8 was driven by the output of described engine 2, comes rice transplanting by described two rice transplanting mechanisms 6,6.
Describedly travel car automatically except having described running vehicle wheel 1, described engine 2 and described manoeuvre portion 4, also have the top that is arranged on described engine 2 engine fuel tank 12, cover this fuel tank 12 and described enforcement wheel 1 top hood 13, be arranged on the preparation seedling carrying stand 14 of the rear end side top of this hood 13.
Fig. 3 is the vertical view of described vehicle body hanger 5.Fig. 4 is the rearview of described vehicle body hanger 5 in rice transplanting mechanism configuration portion.As shown in these figures, described vehicle body hanger 5 has: gearbox body 15, and it is used to support described engine 2; Pair of right and left car body main support 16,16, it is to the car body rear extension from described gearbox body 15; Handle frame 17, its front is connected with the rearward end of described pair of right and left car body main support 16,16; The car body above-below direction towards pillar brace 18, the rearward end of the car body main support 16 in the left side in its bottom and the described pair of right and left car body main support 16,16 is connected; The car body above-below direction towards transmission case 19, the rearward end of the car body main support 16 on the right side in its bottom and the described pair of right and left car body main support 16,16 is connected; Seedling carrying stand pillar 70, its lower end side is connected with the upper end side of described pillar brace 18 and described transmission case 19; Cross-car towards connection support 20, it is used for connecting between the base portion with the seedling carrying stand pillar about described 70,70.
As shown in Figure 3, described handle frame 17 has: pair of right and left rack body 17a, 17a; Be used for tabular connection support 17b with the front connection of this pair of right and left rack body 17a, 17a; Be used for tabular connection support 17c with the rear end side connection of described pair of right and left rack body 17a, 17a.
Fig. 5 is the line chart that is used for the output of described engine 2 is passed to the transmission device of described running vehicle wheel 1 and described transplanting portion 8; Fig. 6 is the described engine 2 of car and described gearbox body 15 vertical view at the position of configuration that travels automatically; Fig. 7 is the end view of car front portion of travelling automatically.As shown in these figures, described gearbox body 15 has: gearbox main body 15a, and it is connected on the side wall portion in cross-car left side of bottom of described engine 2; The 15b of the delivery casing portion of travelling of tubular, it is to extend by the below of described engine 2 to the cross-car right direction from the bottom of this gearbox main body 15a; The rice transplanting delivery casing 15c of portion of tubular, it is to extend abreast by the below of described engine 2 and with the described 15b of delivery casing portion that travels to the cross-car right direction from the bottom of gearbox main body 15a.
Described gearbox main body 15a contains gearbox M, and a pair of input gear 21,21 of described gearbox M is connected from the side wall portion of described engine 2 on the outstanding output shaft 2a in cross-car left side.This gearbox M has: gearbox portion 22, and it has described a pair of input gear 21,21; The clutch portion 25 of travelling, it travels with output gear 23 interlocks by gear 24 and this gearbox portion 22; Torque limiter portion 28, the rice transplanting of described gearbox portion 22 is input in this torque limiter portion by gear 27 with the driving force of output gear 26; Speed changing portion 30 between strain, its power shaft 31 and described torque limiter portion 28 interlocks; Rice transplanting clutch portion 35, its from the output shaft 32 of speed changing portion 30 between this strain by transmission.
The described 15b of delivery casing portion that travels contains distolateral with output shaft 36 of travelling from described clutch portion 25 transmitting powers that travel.The described rice transplanting delivery casing 15c of portion contains from distolateral with output shaft 37 of the rice transplanting of described rice transplanting clutch portion 35 transmitting powers.The described rice transplanting delivery casing 15c of portion a little more approaches the car body front side with than lower a little being provided with highly of the 15b of delivery casing portion that travels than the described 15b of delivery casing portion that travels.Described rice transplanting is with output shaft 37 and described travelling with output shaft 36, more approaches the car body front side and than travelling with the low a little state that is provided with highly that is provided with of output shaft 36, is arranged on the car body fore-and-aft direction with output shaft 36 than travelling with output shaft 37 with rice transplanting.
Described wheel drive case 10 is supported on the extension end of the described 15b of delivery casing portion that travels in the mode of freely shaking up and down.This wheel drive case 10 supports described running vehicle wheel 1 to outstanding axletree 1a in the mode of freely rotating to the car body left by the rearward end from wheel drive case 10, by transmission device 38 described driving force of travelling with output shaft 36 is delivered to described axletree 1a, is delivered to running vehicle wheel 1 thus with the turning cylinder form that is contained in wheel drive case 10.
Described pair of right and left car body main support 16,16, by from the rearward end of this car body main support 16 to the outstanding driving shaft 39 of a side (body inner side) that described running vehicle wheel 1 is positioned at, support the left side among the described pair of right and left rice transplanting mechanism 6,6 or the rice transplanting mechanism 6 on right side.This pair of right and left car body main support 16,16, the transmission device 40 that becomes the turning cylinder form by being contained in car body main support 16 is delivered to described rice transplanting the transmission case of the described driving shaft 39 of described rice transplanting mechanism 6 with the driving force of output shaft 37.
Promptly, described gearbox body 15, is at a high speed and two gears of low speed by gearbox portion 22 with the driving force speed change of the output shaft 2a of engine 2, thereby it is distributed into travel usefulness and rice transplanting usefulness, the driving force that is assigned as the usefulness of travelling is delivered to the usefulness output shaft 36 that travels by the clutch portion 25 of travelling, and by being transported to wheel drive case 10 with output shaft 36, thereby be delivered to running vehicle wheel 1 from this traveling.This gearbox body 15, by using speed changing portion 30 and rice transplanting clutch portion 35 between torque limiter portion 28, strain, to be assigned as driving force that rice transplanting uses by gearbox portion 22 and be delivered to rice transplanting with output shaft 37, thereby carry with a pair of to the left and right car body main support 16,16 of output shaft 37 from this rice transplanting, be delivered to pair of right and left rice transplanting mechanism 6,6 thus.
As shown in Figure 3, described running vehicle wheel 1 is arranged in the car body vertical view and travels car automatically on the line of the centre line C L on the left and right directions.Described wheel drive case 10 is with respect to described running vehicle wheel 1 deflection cross-car right side, the weight of wheel drive case 10 acts on the car that travels automatically in the position from the more close cross-car of described centre line C L right side, therefore, gearbox body 15 and transmission case 19, with easy balance travel automatically car left and right sides weight and constitute vehicle body hanger 5.
That is, in the gearbox body 15 within it portion the Heavy Weight at other positions of weight ratio at the position of described gearbox portion 22 is set, can think that the weight of gearbox body 15 acts on the car that travels automatically on the position that is provided with gearbox portion 22.Gearbox body 15 constitutes vehicle body hanger 5 with following state, promptly, the described gearbox portion 22 that is positioned at these gearbox body 15 inside is with respect on the left of the running vehicle wheel 1 deflection cross-car opposite with being provided with described wheel drive case 10 sides, and the weight of gearbox body 15 acts on the car that travels automatically with respect to described centre line C L at the opposition side with the weight active side of wheel drive case 10 and transmission case 19.19 of transmission cases constitute vehicle body hanger 5 with following state, promptly, with respect to described running vehicle wheel 1 deflection and the opposite cross-car right side of gearbox portion 22 sides that is provided with gearbox body 15, the weight of transmission case 19 acts on automatically travel car with respect to described centre line C L at the opposition side with weight effect one side of gearbox body 15 with the weight of wheel drive case 10.
Fig. 8 is the cutaway view of described gearbox body 15 and described wheel drive case 10.As shown in the drawing, described gearbox body 15 has a pair of support portion 15d, 15d, and by this a pair of support portion 15d, 15d, to travel with the both end sides of the columnar base portion 10a of the mode support wheel driving box 10 that freely rotates of axle core of output shaft 36 around described, wherein, described a pair of support portion 15d, 15d with decentralized configuration the input gear 42 of described wheel drive case 10 with its rotating shaft core vertical direction on the mode of both lateral sides be arranged on the described 15b of delivery casing portion that travels.In described a pair of support portion 15d, 15d, be positioned at the support portion 15d that the side opposition side is set of gearbox main body 15a with the 15b of delivery casing portion that travels, the connecting portion 15e of the extension end by being used to connect this support portion 15d and the described rice transplanting delivery casing 15c of portion is connected engine 2.The 15b of delivery casing portion that travels adopts two ends formula supporting construction, that is, its base portion side is connected with gearbox main body 15a and supported, its distolateral then connection with engine 2 of extension and supported.
That is, gearbox body 15, in the two ends at the both ends of the base portion 10a of wheel drive case 10 formula supporting construction, easy on and off is support wheel driving box 10 rotationally by support portion 15d supporting role.
A support portion 15d among described a pair of support portion 15d, the 15d is embedded in outside by bearing body 43 under the state of an end parts of described base portion 10a, ownly supports described base portion 10a rotationally.Another support portion 15d among described a pair of support portion 15d, the 15d under the state of the other end that is embedded in described base portion 10a by bearing body 44, supports described base portion 10a freely to rotate.
As shown in Figure 7, when vehicle body side is observed, no matter how the upper-lower position of described running vehicle wheel 1 changes, the configuration that described transmission case 19 all overlaps with the rearward end of described running vehicle wheel 1 with the lower end side of transmission case 19 and supported, near the state that acts on the car that travels automatically with the weight of transmission case 19 running vehicle wheel 1 constitutes vehicle body hanger 5.
Shown in Fig. 6, Fig. 9 A, Fig. 9 B, the described car that travels automatically has the oil pressure unit 48 that connects the top that is arranged on described gearbox main body 15a, and has an interlinked mechanism 60 of the front interlock of the wheel lift valve 47 that makes this oil pressure unit 48 and described pair of right and left ground connection hull 7,7, no matter walk driving wheel 1 in the rice field to the degree that is absorbed in of arable land recess or to the rising degree of arable land teat how, all the transplanting depth with described pair of right and left rice transplanting mechanism 6,6 maintains constant or constant.
That is, described wheel lift valve 47 shakes lifting by described oil hydraulic cylinder 11 being stretched operation with described wheel drive case 10, can make 1 pair of vehicle body hanger of described running vehicle wheel 5 carry out descending operation.
Figure 10 represents that the support portion of described ground connection hull 7 is in the structure of overlooking under the observation; Figure 11 is the end view of the supporting construction of described ground connection hull 7.As shown in these figures, the rear end side of described pair of right and left ground connection hull 7,7 is by tail-bracket 50 and connecting pin 53, be supported on the support arm 52 in the mode of freely rotating, wherein, described tail-bracket 50 is fixed in the upper face side of ground connection hull 7, described connecting pin 53 with described tail-bracket 50 be connected from the main support 17a that is supported in described handle frame 17 cross-car towards the described support arm 52 that extends of hull fulcrum 51 on.
Shown in Fig. 6, Fig. 9 A, Fig. 9 B, the leading section of described pair of right and left ground connection hull 7,7, front rack 54 by being fixed in ground connection hull leading section and rearward end are connected freely to rotate and are connected connecting rod 55 on this front rack 54, be supported on cross-car towards fulcrum 56 on, wherein this fulcrum 56 is entrapped in the slotted hole 55a that is arranged in these connection connecting rod 55 front in the mode that is free to slide and constitutes, and is fixed on the described car body main support 16.
Promptly, the ground connection hull 7,7 of pair of right and left is with supported round the mode that fluctuates with respect to vehicle body hanger 5 towards the axle core in hull rear end side and the cross-car that is positioned near the described connecting pin 53 the rice transplanting position of rice transplanting mechanism 6, when running vehicle wheel 1 is absorbed in the arable land recess, vehicle body hanger 5 descends with respect to the field face and the transplanting depth of rice transplanting mechanism 6 when darker than set depth, and the front of ground connection hull 7 rises by the ground connection reaction force.When running vehicle wheel 1 rides over the arable land teat, vehicle body hanger 5 rises with respect to the field face and the transplanting depth of rice transplanting mechanism 6 when more shallow than set depth, and the front of ground connection hull 7 descends by hull weight.
Shown in Fig. 6, Fig. 9 A, Fig. 9 B, described interlinked mechanism 60 has: valve switches body 61, and it is connected with the rotating operation axle 47a of described wheel lift valve 47 in the mode of freely rotating integratedly; Fulcrum 62, its with cross-car towards posture be supported on the vehicle body hanger 5; Interlock connecting rod 63, its mode of freely rotating with pars intermedia are supported on the distolateral of this fulcrum 62; Pair of right and left jack back 64,64, its in the mode of freely rotating from described fulcrum 62 to the car body rear extension; Trace 65, it is used for the extension end of the jack back 64 in described left side is connected with the described front rack 54 of the ground connection hull 7 in described left side; Trace 65, it is used for the extension end of the jack back 64 on described right side is connected with the described front rack 54 of the ground connection hull 7 on described right side.
Described pair of right and left jack back 64,64 shakes around the axle core of described fulcrum 62 respectively.This pair of right and left jack back 64,64 has via the arm 64a of the jack back 64 on the base portion of the jack back 64 in left side and right side and the linkage pin of installing 66.Described valve switches body 61 and shakes loading by the spring 67 that is connected with this arm 61a to the decline fore side.Described spring 67,, valve shakes loading by being switched body 61, can shake loading to interlock connecting rod 63, so that switch follower 61b that the runner of body 61 constitutes and the operation arm 63a of interlock connecting rod 63 connects, and connect by follower 63b and the described linkage pin 66 that the protuberance of interlock connecting rod 63 constitutes by valve.
When the front of pair of right and left ground connection hull 7,7 all when the reference position rises, pair of right and left jack back 64,64 also all rises by trace 65.At this moment, linkage pin 66 integrally is raised, thereby the follower 63b to interlock connecting rod 63 plays castering action, interlock connecting rod 63 shakes and makes arm 63a decline around the axle core of fulcrum 62, this arm 63a plays squeezing action and valve switching body 61 is shaken the follower 61b that valve switches body 61, thus, valve switching body 61 switches in wheel decline side with wheel lift valve 47.
When the front of pair of right and left ground connection hull 7,7 descended from the reference position jointly, pair of right and left jack back 64,64 all descended by trace 65.At this moment, linkage pin 66 whole declines, interlock connecting rod 63 shakes by the axle core of spring 67 around fulcrum 62, thereby arm 63a is risen, and valve switches body 61 and is shaken by spring 67, thereby wheel lift valve 47 is switched in the wheel uplifted side.
A side front rises from the reference position in pair of right and left ground connection hull 7,7, and the opposing party's front is when the reference position descends, and pair of right and left jack back 64,64 carries out descending operation to mutual rightabout.At this moment, follower 63b with respect to interlock connecting rod 63, one distolateral decline of linkage pin 66, another distolateral then rising, 66 one-tenth heeling conditions of linkage pin are not being shaken under the situation of operation interlock connecting rod 63 thus, interlock connecting rod 63 posture of maintaining a neutral stance, valve switches body 61 state of maintaining a neutral stance, thereby wheel lift valve 47 is operated to the neutral position.
Promptly, when pair of right and left ground connection hull 7,7 all rises from the reference position when shaking, interlinked mechanism 60 shakes by this rising wheel lift valve 47 is switched to the wheel uplifted side, when pair of right and left ground connection hull 7,7 all descends from the reference position when shaking, shake by this decline wheel lift valve 47 is switched to wheel decline side, when pair of right and left ground connection hull 7,7 from the reference position during to mutual opposite direction lifting, make pair of right and left ground connection hull 7,7 and wheel lift valve 47 interlocks, state so that wheel lift valve 47 is maintained a neutral stance.
Shown in Fig. 3,6, described pair of right and left car body main support 16,16 has following configuration status, promptly, the interval more past car body main support front of pair of right and left car body main support 16,16 on the cross-car direction is then more little, and the end that the front of pair of right and left car body main support 16,16 is compared the described fulcrum 62 in the described interlinked mechanism 60 is positioned at the inboard of cross-car direction, and the state that acts on the transversely as close as possible inboard of the car that travels automatically with the weight of car body main support 16 constitutes vehicle body hanger 5.
As shown in Figure 1 and Figure 2, described preparation seedling carrying stand 14 constitutes by connecting and being combined as netted pole material, has the loading surface of the size that can load and accommodate a preparation blanket appearance seedling.This prepares seedling carrying stand 14, long side direction (rice shoot is vertical) with the preparation blanket appearance seedling of accommodating becomes cross-car, the short side direction (rice shoot is horizontal) of the preparation blanket appearance seedling of accommodating becomes the mounting position of car body fore-and-aft direction, is supported on the described pair of right and left seedling carrying stand pillar 70,70.
As Fig. 2, shown in Figure 7, described hood 13 has and is arranged on distolateral thereafter through hole 13a.This through hole 13a is positioned at the below of described preparation seedling carrying stand 14.
That is, hood 13, can be seen near the place ahead at running vehicle wheel ground connection place of field face by between the seedling carrying stand pillar 70,70 of described pair of right and left and described through hole 13a from the actuated position at the car rear of travelling automatically.
As shown in Figure 7, the rear end side of described hood 13 is supported on the described connection support 20 in the mode of freely rotating, this hood 13 around the cross-car of described connection support 20 towards the switching that fluctuates of an axle core.This hood 13 is when open and-shut mode, and the locking mechanism 71 of the front by being arranged on hood 13 is fixed on to rise opens posture and decline closed posture.
Figure 12 A, Figure 12 B are the end views of described locking mechanism 71.Figure 13 is the vertical view of described locking mechanism 71.As shown in these figures, described locking mechanism 71 has support bar 73, this support bar 73 is supported on the strut 72 of the car body front side end that is used to support described fuel tank 12 in the mode of freely shaking up and down, and have: supporting rod seat 74, it is arranged on the leading section inboard of hood 13: locking spring 75, it is made of leaf spring.
Described support bar 73 has: the pair of right and left armed lever 73a of portion, 73a, its base portion are supported on the described strut 72 freely to rotate; The 73b of connecting rod portion, it is used to connect the free end side of the pair of right and left armed lever 73a of portion, 73a.Described supporting rod seat 74 is by its pair of right and left support chip 74a of portion, and the slotted hole 74b of the hood fore-and-aft direction that 74a had remains on the state that is free to slide with the described connecting rod 73b of portion.
Figure 12 B is the end view under the hood open mode of locking mechanism 71.As shown in the drawing, when hood 13 during by last lift operations, the lifting operation of support bar 73 by supporting rod seat 74 being carried out to rise shakes operation, and the 73b of connecting rod portion of support bar 73 moves slotted hole 74b.When being in, hood 13 rises when opening posture, the 73b of connecting rod portion is positioned at the rear end of slotted hole 74b, the locking spring 75 service portion 75a with the 73b of connecting rod portion by the rear end that is pressed in slotted hole 74b, support bar 73 resists in the load of hood 13 and remains on the rising posture, thereby hood 13 is outstanding and be supported on to rise and open on the posture.Thus, locking mechanism 71 is fixed in hood 13 to rise and opens posture.
Figure 12 A is the end view under the hood closed condition of locking mechanism 71.As shown in the drawing, when hood 13 was lowered by operation, support bar 73 descended by depressing of supporting rod seat 74 and shakes operation, and the 73b of connecting rod portion of support bar 73 moves slotted hole 74b.When hood 13 is in the decline closed posture, the 73b of connecting rod portion is positioned at the rear end of slotted hole 74b, the service portion 75a of locking spring 75 gives as security the 73b of connecting rod portion and presses to the rear end of slotted hole 74b, support bar 73 is maintained at the decline posture, thereby hood 13 is outstanding and be supported on the decline closed posture.Thus, locking mechanism 71 is fixed in hood 13 on the decline closed posture.
As shown in Figure 7, the end of the car body rear side of described fuel tank 12 is supported on the upper end of case supports member 78, and the bottom of described case supports member 78 then is connected on the described gearbox body 15.Described case supports member 78 engine 2 and fuel tank 12, and running vehicle wheel 1 between, size with the front upper place that covers running vehicle wheel 1, formation stops the earth that splashes from running vehicle wheel 1 thus, so that earth can be attached to the retaining mud capping on engine 2 and the fuel tank 12.
As shown in Figure 1, 2, described transplanting portion 8 also has a seedling carrying stand 80 that is arranged on described handle frame 17 tops except having described pair of right and left rice transplanting mechanism 6,6 and described pair of right and left ground connection hull 7,7.Described seedling carrying stand 80 becomes offside in the inclination attitude that tilts to the back upper place of car body rear side to its upper end side more.
As Fig. 4, Figure 14, shown in Figure 15, described each rice transplanting mechanism 6 has: rice transplanting arm 6a, and described rice transplanting arm 6a is supported on the body inner side of described car body main support 16 rearward end by actuating arm 82 and walking bar rod 83; Rice transplanting pawl 6b, described rice transplanting arm 6a is arranged on the front of this rice transplanting arm 6a.
Each rice transplanting mechanism 6, utilizing described actuating arm 82 to be driven by described driving shaft 39 rotates, make the front of rice transplanting pawl 6b carry out between rice shoot conveying end 85 and field face, drawing as shown in figure 14 rotary motion trace T and reciprocal rice transplanting action, wherein, rice shoot conveying end 85 is arranged on the guide rail 84, and guide rail 84 then is arranged on the lower end side of described seedling carrying stand 80 and is supported on (with reference to Figure 16) on the vehicle body hanger 5.
Thus, each rice transplanting mechanism 6 is in described rice shoot conveying end 85, cut off the rice shoot piece of a strain part from the bottom of the blanket appearance seedling of seedling carrying stand 82 and take out, the rice shoot piece that takes out is descended from rice shoot conveying end 85 to be transported to by on the field face on described ground connection hull 7 whole ground and plant.
As Figure 16, Figure 17, shown in Figure 180, described seedling carrying stand 80 has a pair of rice shoot loading part 80a, the 80a that supplies with rice shoot to described pair of right and left rice transplanting mechanism 6,6 respectively, and, support on described guide rail 84 at free slippage twelve Earthly Branches on the cross-car it is arranged in the state of cross-car.This seedling carrying stand 80 has the connecting elements of giving prominence to the car body front side from the lower end side of seedling carrying stand 80 90.Connecting elements 90 makes and is arranged on than handover body 101 and seedling carrying stand 80 interlocks of described seedling carrying stand 80 near the rice shoot transverse feed mechanism 100 of car body front side.As shown in Figure 1, described rice shoot transverse feed mechanism 100 is arranged on than the more close car body rear side of vertical line A of the axletree core X by described running vehicle wheel 1 and than the position in the more close outside of periphery of described running vehicle wheel 1.
Promptly, seedling carrying stand 80 is by the rice transplanting action interlock of described rice shoot transverse feed mechanism 100 with rice transplanting mechanism 6, and back and forth transfer to the car body transverse direction along described guide rail 84, the pairing relatively described rice shoot conveying end of the blanket appearance seedling of each rice shoot loading part 80a 85 is back and forth transferred to cross-car, so that the rice transplanting mechanism 6,6 of pair of right and left is when taking out the rice shoot piece from the bottom of the blanket appearance seedling of pairing rice shoot loading part 80a, can be from blanket appearance seedling horizontal one distolateral to another distolateral rice shoot that takes out successively.
Figure 17, Figure 18 are the end views of described rice shoot transverse feed mechanism 100; Figure 20 is the vertical view of described rice shoot transverse feed mechanism 100.As shown in these figures, described rice shoot transverse feed mechanism 100 except having described handover body 101, also have cross-car towards the axis of guide 102, the barrel 101a of described handover body 101 in outer embedding on the described axis of guide 102.
The described axis of guide 102 is with on the upper end that freely drives the mode of rotating and be supported on the upper end of described transmission case 19 and described pillar brace 18.The axis of guide 102 is covered by the coiled pipe of installing via described handover body 101 and the axis of guide 102 ends 103.In Figure 17, represent to be in running vehicle wheel in the rising limit with the running vehicle wheel shown in the double dot dash line 1.As shown in the drawing, the described axis of guide 102 is under the propradation of described running vehicle wheel 1, be positioned at close car body front side, near running vehicle wheel 1, act on the state formation rice shoot transverse feed mechanism 100 of the car that travels automatically with the weight of rice shoot transverse feed mechanism 100 than the last end 1b of this running vehicle wheel 1.
The described axis of guide 102 has a pair of feeding groove 104,104, and described a pair of feeding groove 104,104 is arranged on the outer peripheral face of the described axis of guide 102 with helical form.A pair of feeding groove 104,104 has the mutually different hand of spiral, and is interconnected in the both end sides of the axis of guide 102, so that the engaging pawl 105 that is arranged on described barrel 101a moves to the opposing party's feeding groove 104 from a side feeding groove 104.
As shown in figure 15, the described axis of guide 102 transmits the driving force of the described driving shaft 39 of the rice transplanting mechanism 6 on described right side and is driven by described transmission case 19.Promptly, described transmission case 19 contains transmission device, rice shoot feed change portion 110 and driving-chain 115 that it is power shaft that this transmission device has with described driving shaft 39, this driving-chain 115 is reeled via the output shaft 111 and the described axis of guide 102 of this rice shoot feed change portion 110.
When the described barrel 101a by described handover body 101 is embedded on the described axis of guide 102 outward in the mode that relatively rotates and be free to slide relatively, described engaging pawl 105 is entrapped in described feeding groove 104 in the mode that is free to slide, thereby transferring body 101 engages with the axis of guide 102, so that transfer the feeding effect of body 101, on cross-car, back and forth transfer along the axis of guide 102 according to 104,104 pairs of engagings of a pair of feeding groove pawl 105.The transfer direction of transferring body 101 depends on the hand of spiral of the feeding groove 104 that engaging pawl 105 snaps in, when being entrapped in a side feeding groove 104, engaging pawl 105 becomes the direction of car body dextrad, when snapping in the direction that then becomes the car body left-hand when pawl 105 is entrapped in the opposing party's feeding groove 104.
Described handover body 101 has the axle sleeve 106 that is arranged on described barrel 101a both ends, by the effect of this axle sleeve 106, can not produce the phase mutual interference between the barrel 101a and the axis of guide 102 and rotates and slide with respect to the axis of guide 102.
As Figure 16, shown in Figure 180, described connecting elements 90 has: connect framework 91, its both side ends via seedling carrying stand 80 lower end side is connected, and has a shape when the car body above-below direction is observed; Connector 92, it is used for the connection plate body 93 of this connection framework 91 is connected the pair of right and left connection board 10b of described handover body 101, the lower end side of 10b.
Promptly, rice shoot transverse feed mechanism 100 is according to the driving force that is transferred from the transmission device of described driving shaft 39 by described transmission case 19, the axis of guide 102 is driven to rotate, make by this axis of guide 102 and to transfer body 101 and move back and forth to cross-car along the axis of guide 102, and by transferring the horizontal feeding force of body 101 outputs, should pass to seedling carrying stand 80 by horizontal feeding force by described connector 92 with the described framework 91 that is connected, thus, seedling carrying stand 80 is back and forth transferred to cross-car along guide rail 84.
As Figure 16, shown in Figure 17, described seedling carrying stand 80 has a plurality of rice shoot length feed bodies 120,121, these a plurality of rice shoot length feed bodies 120,121 are set up along seedling carrying stand 80 horizontal and vertical arrangements, and can freely rotate in the rear side of the bottom of described each rice shoot loading part 80a.In described a plurality of rice shoot length feed bodies 120,121,, be supported in the mode of freely rotating integratedly on the length feed axle 122 of a upside at the upside rice shoot length feed body 120 that laterally forms a line of epimere side along seedling carrying stand.At the downside rice shoot length feed body 121 that laterally form a line of hypomere side, then be supported on the length feed axle 123 of a downside in the mode of freely rotating integratedly along seedling carrying stand.The length feed axle 122 of described upside and the length feed axle 123 of described downside distolaterally rotate to rice shoot length feed direction interlock by interlock chain 124 (with reference to Figure 20) at horizontal one of seedling carrying stand 80.Described upside length feed axle 122 has input arm 125, and this input arm 125 is arranged on described upside length feed axle 122 at seedling carrying stand pars intermedia transversely.
When the shift motion about seedling carrying stand 80 arrives is terminal, described input arm 125 is driven by the rice shoot longitudinal feed mechanism 130 that the rear side via the described axis of guide 102 and seedling carrying stand 80 is provided with, and drive the length feed axle 122 of described upside and drive the rice shoot length feed rotor 120 of described epimere, and the length feed axle 123 that length feed axle 122 and described interlock chain 124 by upside drive described downside drives the rice shoot length feed rotor 121 of described hypomere thus.
Promptly, when the horizontal shift motion about seedling carrying stand 80 arrives is terminal, the blanket appearance seedling of each rice shoot loading part 80a is vertically carried to described rice shoot conveying end 85 by the rice shoot length feed rotor 120,121 of epimere side and hypomere side, and taking out the rice shoot piece by each rice transplanting mechanism 6 from the bottom of blanket appearance seedling afterwards when seedling carrying stand 80 is laterally transferred becomes possibility.
Described input arm 125 is connected with the length feed axle 122 of described upside to rotary clutch 131 by folk prescription.When importing arm 125 when direct rotational direction is driven, described folk prescription makes length feed axle 122 interlocks of input arm 125 and upside to rotary clutch 131, so that import the length feed axle 122 that the driving force of arm 125 is passed to upside.When input arm 125 was reset to position of readiness by back-moving spring, this folk prescription relatively rotated the length feed axle 122 of input arm 125 and upside to rotary clutch 131, so that the revolving force of input arm 125 can not be delivered to the length feed axle 122 of upside.
As Figure 18, shown in Figure 20, described rice shoot longitudinal feed mechanism 130 has: output arm 132, its with the mode of freely rotating integratedly be arranged on the described axis of guide 102 from described transmission case 19 to outstanding end, the cross-car outside; Kinematic link 135, it is supported on the described transmission case 19 in the mode of freely shaking by fulcrum 134; Trace 136, its leading section is connected with the output arm 135a of described kinematic link 135; Length feed operating axis 138, its rearward end at this trace 136 are connected with input rotor 137.
Output runner 132a and the input arm 135b of kinematic link 135 squeezing action that connect of described kinematic link 135 by described output arm 132 driven and shakes from position of readiness by the described axis of guide 102.When described output runner 132a when described input arm 135b breaks away from, the reset response power of the back-moving spring of described kinematic link 135 by acting on described length feed operating axis 138 automatically resets to position of readiness.Described length feed operating axis 138, with cross-car towards posture be positioned under the state of seedling carrying stand 80 rear side, be supported on freely to rotate on the supporter 17d of described handle frame 17, and according to being driven rotation from described output arm 135a by the driving force that trace 136 is delivered to input rotor 137.When this length feed operating axis 138 is driven rotation, make pair of right and left motion arm 139,139 only shake with described kinematic link 135 shake the angle corresponding shake the angle part, wherein said pair of right and left motion arm 139,139 extends from the pars intermedia of length feed operating axis 138 on cross-car in the mode of freely rotating integratedly.When the horizontal shift motion about seedling carrying stand 80 arrives is terminal, length feed operating axis 138 with among the pair of right and left motion arm 139,139 corresponding to the either party's butt among a pair of follower lever 125a, the 125a of the motion arm 139 of the horizontal handover end of travel side of seedling carrying stand 80 and described input arm 125, by making this input arm 125 only drive set angle from position of readiness, thereby the length feed axle 122 that drives described upside makes it only rotate set angle.
Promptly, rice shoot longitudinal feed mechanism 130, during seedling carrying stand 80 direction handover to the left and right, by always driving vertical transfer operation axle 138 to the driving force of importing rotor 137 transmission from the axis of guide 102, when laterally shift motion is terminal about seedling carrying stand 80 arrives, the motion arm 139 corresponding to the horizontal handover end of travel side of seedling carrying stand 80 by length feed operating axis 138 drives input arm 125, thus, drive upside length feed axle 122 and downside length feed axle 123, the rice shoot length feed rotor 121 that makes the rice shoot length feed rotor 120 of epimere and hypomere only drives angle of rotation corresponding to rice shoot length feed amount in rice shoot length feed direction.
As shown in Figure 1, described manoeuvre portion 4 also has except having described control crank 3: a pair of operator 140,141, its be arranged on side by side on the cross-car described control crank 3 below; Operational guidance spare 142 wherein is through with described pair of right and left operator 140,141.
As Fig. 1, shown in Figure 3, described control crank 3 is made of the tubing of a bending, and the car body fore-and-aft direction with pair of right and left towards handle main body 3a, 3a and be used to connect the handle main body 3a of pair of right and left, between the 3a leading section cross-car towards connecting rod 3b.This control crank 3, being installed on the rearward end of described handle frame 17 by the mode of described connecting rod 3b free adjustment setting angle based on fluctuating, by the adjusting of this setting angle, can change the height of the handle portion that is positioned at described pair of right and left handle main body 3a, 3a rearward end.
Described pair of right and left operator 140,141 and described operational guidance spare 142, being supported on the described handle frame 17 with respect to the configuration of described running vehicle wheel 1 deflection with the cross-car side that the side same side is set of described wheel drive case 10, the weight of operator 140,141 and operational guidance spare 142 and the weight of wheel drive case 10 act on the car that travels automatically in the opposite side of active side with respect to the weight of described centre line C L and described gearbox body 15 together.
As Figure 10, shown in Figure 11, an operator 141 among the described pair of right and left operator 140,141 extends from described hull fulcrum 51 in the mode of freely rotating integratedly, by shaking adjusting, can change the transplanting depth of described each rice transplanting mechanism 6 around the axle core of described hull fulcrum 51 and along the guide groove 143 of described operational guidance spare 142.
That is, described hull fulcrum 51 is regulated by shaking of described operator 140 and is rotated adjusting, and with described pair of right and left support arm 52,52 around the adjusting that fluctuates of the axle core of hull fulcrum 51.At this moment, 52 pairs of described connecting pins 53 of each support arm carry out lift adjustment, thereby the rear end side of described ground connection hull 7 is increased and decreased adjusting with respect to the setting height(from bottom) of vehicle body hanger 5.When having regulated the setting height(from bottom) of relative vehicle body hanger 5, pair of right and left ground connection hull 7,7 changes the setting height over the ground by the vehicle body hanger of setting with contacting of field face 5, and the transplanting depth of each rice transplanting mechanism 6 is changed into the degree of depth corresponding to the operating position of operator 140.
As Figure 10, shown in Figure 14, another operator 140 in the described pair of right and left operator 140,141 becomes seedling taking seedling quantity regulating device.
Promptly, operator 140 with the mode of freely rotating integratedly from cross-car towards seedling taking seedling amount regulating shaft 144 extend, by shaking adjusting around the axle core of described seedling taking seedling amount regulating shaft 144 and along the guide groove 145 of described operator guiding 142, change the seedling taking seedling amount of described each rice transplanting mechanism 6 on blanket appearance seedling is vertical, wherein, described seedling taking seedling amount regulating shaft 144 is supported on the described handle frame 17 in the mode of freely rotating.
That is, described seedling taking seedling amount regulating shaft 144 has the motion arm 146 that extends to car body the place ahead in the mode of freely rotating integratedly from its both end sides.When described seedling taking seedling amount regulating shaft 144 is rotated adjusting, described pair of right and left motion arm 146,146 is by the adjusting that fluctuates of this seedling taking seedling amount regulating shaft 144, and act on the operating portion 148 that is connected with the fulcrum 147 of described guide rail 84, thereby make described fulcrum 147 slide up and down adjusting, make described guide rail 84 and described seedling carrying stand 80 carry out lift adjustment along the direction longitudinally of seedling carrying stand with respect to the described rotation track T of rice transplanting mechanism 6 with respect to supporting member 149.When guide rail 84 and seedling carrying stand 80 rise when regulating with respect to rotation track T, the rice transplanting pawl 6b of each rice transplanting mechanism 6 diminishing when blanket appearance seedling takes out the rice shoot piece with respect to the rice shoot of the blanket appearance seedling input quantity on vertically, thus the seedling taking seedling quantitative change of rice transplanting mechanism 6 is little.When guide rail 84 and seedling carrying stand 80 descend when regulating with respect to rotation track T, the rice transplanting pawl 6b of each rice transplanting mechanism 6 when blanket appearance seedling take out rice shoot piece big with respect to the input quantitative change on vertically of the rice shoot of blanket appearance seedling, thus the seedling taking seedling quantitative change of rice transplanting mechanism 6 is big.
Promptly, when described operator 140 shakes adjusting, seedling taking seedling amount regulating shaft 144 is carried out to rotate by this operator 140 and regulates, thereby make guide rail 84 and seedling carrying stand 80 vertically move adjusting to seedling carrying stand, the blanket appearance seedling of each rice transplanting mechanism 6 seedling taking seedling amount on is vertically changed into amount corresponding to the operating position of operator 140 with respect to rice transplanting mechanism 6.
As Figure 16, shown in Figure 17, the described connection framework 91 of described connecting elements 90 is except having described connection plate body 93, also have cross connecting plate 94, the horizontal end that this cross connecting plate 94 is used for connecting plate body 93 and seedling carrying stand 80 is connected the both end sides on the described cross-car that is connected plate body 93.
Described connection plate body 93 has than the big or small W on the big car body above-below direction of the diameter D of the described axis of guide 102.When vehicle body side was observed, this connection plate body 93 had the installation form that is set up and is set up across the whole width of seedling carrying stand 80 in the place ahead of seedling carrying stand 80 along the periphery of described running vehicle wheel 1.
Thus, described connection plate body 93 prevents to be splashed to by the earth that running vehicle wheel 1 is rolled the phenomenon of seedling carrying stand 80, constitutes to prevent the retaining mud capping of earth attached to the blanket appearance seedling of seedling carrying stand 80.This connection plate body 93 can stop that the leaf of the blanket appearance seedling on each the rice shoot loading part 80a that is loaded in seedling carrying stand 80 pours the phenomenon of rice shoot transverse feed mechanism 100 and rice shoot longitudinal feed mechanism 130 into, constitute thus avoid the rice shoot leaf because of with the rice shoot plate that contacts the damage that causes of rice shoot transverse feed mechanism 100 and rice shoot longitudinal feed mechanism 130.
As shown in figure 19, described connecting elements 90 has the adjusting portion 95 that is arranged on the connector 92.
Described adjusting portion 95 is used to install described connector 92 is connected the connecting bolt 96 that plate body 93 is connected with described, and constitute by the bolt hole of being arranged to slotted hole along cross-car, can be regulated connecting framework 91 and the link position of connector 92 on cross-car, can be regulated seedling carrying stand transversely the link position of seedling carrying stand 80 thus with respect to described handover body 101.
Promptly, being regulated at seedling carrying stand link position transversely of 95 pairs of seedling carrying stands 80 of described adjusting portion with respect to transferring body 101, so that seedling carrying stand 80 when arriving the end of travel that laterally moves, prevents by the seedling taking seedling action of rice transplanting mechanism 6 phenomenon at a horizontal distolateral residual rice shoot of blanket appearance seedling.
As shown in figure 19, described connecting elements 90 has the through hole 97 that is arranged on the described connector 92.
Described through hole 97 can be installed in the mode that is free to slide and be used for the connecting pin 98 that the described connection board 101b with described handover body 101 is connected with described connector 92, and constitute by the pin-and-hole that constitutes along the slotted hole of the moving direction of the described seedling taking seedling amount regulating shaft 144 of seedling carrying stand 80, when carrying out the adjusting of seedling taking seedling amount by described operator 140, allow 80 pairs of seedling carrying stands to transfer relatively moving of body 101.
That is,, transfer body 101 and rotate with respect to the axis of guide 102 when the seedling carrying stand 80 of following seedling taking seedling amount to regulate mobile is passed to when transferring body 101.At this moment,, produce laterally moving of seedling carrying stand 80, produce blanket appearance seedling moving thus with respect to rice shoot conveying end 85 because snapping in of 105 pairs of feeding grooves 104 of engaging pawl transferred body 101 and moved with respect to the shaft core direction of the axis of guide 102 to the axis of guide 102.Described through hole 97 can make the seedling taking seedling amount by operator 140 regulate not produce moving of described rice shoot and carry out.
Figure 21 A, Figure 21 B are the end views of speed changing portion 30 between described strain; Figure 22 is the vertical view of speed changing portion 30 between described strain.As shown in these figures, speed changing portion 30 also has small diameter gear 33 and the gear wheel in large diameter 34 meshing with this small diameter gear 33 between described strain except having described power shaft 31 and described output shaft 32.Described small diameter gear 33 and described gear wheel in large diameter 34 have installing hole, can between described power shaft 31 and described output shaft 32, switch installation according to this installing hole, and this installing hole can engage in the mode of freely rotating integratedly with in power shaft 31 and the output shaft 32 any.
That is, Figure 21 A is the end view of speed changing portion 30 under fast state between strain.As described in this figure, when described gear wheel in large diameter 34 is installed on the power shaft 31, when described small diameter gear 33 is installed on the output shaft 32, speed changing portion 30 carries out speedup by the driving force of gear wheel in large diameter 34 and 33 pairs of power shafts 31 of small diameter gear between strain, and, become fast state thus from output shaft 32 outputs.When switching to fast state, speed changing portion 30 is accelerated the actuating speed of each rice transplanting mechanism 6 between strain, thereby dwindles the interval (between strain) of plantation rice shoot on the car that travels automatically travels direction of each rice transplanting mechanism 6.
Figure 21 B is the end view of speed changing portion 30 under lower-speed state between strain.As shown in the drawing, when described small diameter gear 33 is installed on the power shaft 31, when described gear wheel in large diameter 34 is installed on the output shaft 32, speed changing portion 30 slows down by the driving force of small diameter gear 33 and 34 pairs of power shafts 31 of gear wheel in large diameter between strain, and, become lower-speed state thus from output shaft 32 outputs.When switching to lower-speed state, speed changing portion 30 makes the actuating speed of each rice transplanting mechanism 6 slow between strain, plants the interval (between strain) of rice shoot on the travel direction of the car that travels automatically thereby strengthen 6 kinds of each rice transplanting mechanisms.
As shown in figure 22, described power shaft 31 and described output shaft 32 have gear support portion 31a, 32a, described gear support portion 31a, 32a all expose in the outside of gearbox body 15, and the state that exposes in the outside of gearbox body 15 with described gear wheel in large diameter 34 and described small diameter gear 33 whole supports gear wheel in large diameter 34 and small diameter gears 33.Described gearbox body 15 has gear cap 30b, and described gear cap 30b is removably mounted on the sidepiece of gearbox body 15 by connecting bolt 30a, and covers described gear wheel in large diameter 34 and described small diameter gear 33.This gear cap 30b has inner fovea part in the case that can integrally accommodate the gear wheel in large diameter 34 that exposes from gearbox body 15 and small diameter gear 33 under the state that is installed on gearbox body 15, promptly have the container shapes of food tray shape.
Promptly, when carrying out the speed change of speed changing portion 30 between strain, if take gear cap 30b, gear wheel in large diameter 34 and small diameter gear 33 integral body are exposed from gearbox body 15, operation to gear 34,33 becomes easily thus, can promptly carry out the switching of 33,34 pairs of power shafts 31 of gear and output shaft 32 and install.
Figure 23 A, Figure 23 B are the end views of described traverse feed speed changing portion 110.As this figure and shown in Figure 15, described traverse feed speed changing portion 110 has: input gear 112a, 112b, and it is supported on the described driving shaft 39 in the mode of freely rotating integratedly; Output shaft gear 113, its with the meshing state of described input gear 112a, 112b under, be supported on the described output shaft 111 in the mode of freely rotating integratedly; Gear cap 114, it is used for covering input gear 112a, 112b and output shaft gear 113.
Described gear cap 114 is removably mounted on the transmission case 19 by connecting bolt 114a.
Described output shaft gear 113 is made of conversion gear, only carries out the fast state of traverse feed speed changing portion 110 and the switching between the lower-speed state by the exchange of described input gear.
That is, Figure 23 A is the end view of traverse feed speed changing portion 110 under fast state.As shown in the drawing, when number of teeth input gear 112a how is installed on driving shaft 39, traverse feed speed changing portion 110 is set low speed reducing ratio by input gear 112a and output shaft gear 113, and with the driving force of driving shaft 39 slow down for the low speed reducing ratio that sets from output shaft 111 outputs, promptly become fast state.When traverse feed speed changing portion 110 switches to fast state, accelerate the handover speed of the handover body 101 of rice shoot transverse feed mechanism 100, reduce the blanket appearance seedling seedling taking seedling number of times transversely of each rice transplanting mechanism 6.
Figure 23 B is the end view of traverse feed speed changing portion 110 under lower-speed state.As shown in the drawing, when the few input gear 112b of the number of teeth is installed on the driving shaft 39, traverse feed speed changing portion 110 is set high speed reducing ratio by input gear 112b and output shaft gear 113, and with the driving force of driving shaft 39 slow down for the high speed reducing ratio that sets from output shaft 111 outputs, promptly become lower-speed state.When switching to lower-speed state, traverse feed speed changing portion 110 reduces the handover speed of the handover body 101 of rice shoot transverse feed mechanism 100, increases each rice transplanting mechanism 6 at blanket appearance seedling seedling taking seedling number of times transversely.
Figure 24 has the unitary side view that other implement the walk-behind type paddy-field work machine of structure.This walk-behind type paddy-field work machine has: line indicating device 150, and it is arranged on the both sides of described handle frame 17; Center pointer 151, it is arranged on the leading section of the car that travels automatically, and is configured in the car central part in the horizontal that travels automatically.
Figure 25 is the rearview of described line indicating device 150.As shown in the drawing, described line indicating device 150 has: base member 152, and it is supported on the end of described hull fulcrum 51; Line indicator 154, it is by fulcrum 153, is installed in the outboard end on the cross-car of described base member 152 in the mode of freely shaking; Changer lever 156, it is installed in the medial end of described base member 152 on cross-car by fulcrum 153 in the mode of freely shaking.
Described changer lever 156 and described line indicator 154 are by trace 157 interlocks.
When the axle core and to cross-car on shake operation of described changer lever 156 around described fulcrum 155, thereby when being in the use location of representing with double dot dash line among Figure 25, line indicator 154 shakes operation by connecting rod 157 around axle core extrusion outside cross-car of fulcrum 153, uses posture thereby switch to the decline of representing with double dot dash line among Figure 25.When being in when descend using posture, line indicator 154 contacts the line service portion 154a of front end with the field face, and forms the travel groove of index line of conduct by this line service portion 154a on the face of field.
Promptly, this walk-behind type paddy-field work machine is observed the described center pointer 151 and the index line that travels from manoeuvre portion 4, center pointer 151 is overlapped with the index line that travels and the car that travels is automatically travelled, thus, rice transplanting seedling when travelling operation at present and the interval of rice transplanting seedling on cross-car when travelling operation are before equated with the interval of the rice transplanting seedling of rice transplanting mechanism 6,6 by pair of right and left.
When described changer lever 156 around described fulcrum 155 the axle core on cross-car, shake operation, thereby when being in the collecting position of representing with solid line among Figure 25, line indicator 154 promotes to body inner side and shakes operation by the axle core of connecting rod 157 around fulcrum 153, accommodates posture thereby switch to the rising of representing with solid line among Figure 25.
Figure 26 is the cutaway view of the mounting structure of the described base member 152 of expression.As shown in the drawing, described base member 152 is connected with hull fulcrum 51 thus by being embedded on the described hull fulcrum 51 and a side installation component 158 is fixed on the hull fulcrum 51 by lock(ing) bolt 160 a pair of installation component 158,159 being outer.
That is, line indicating device 150 becomes the unit of the assembling of can rule simultaneously indicator 154 and changer lever 156 by the installation of base member 152 to hull fulcrum 51.
Can certainly adopt wheel drive case 10, transmission case 19 and operator 140,141 with respect to running vehicle wheel 1 deflection car body left side side and be provided with, gearbox body 15 is arranged to that its gearbox portion 22 is partial to the car body right side with respect to running vehicle wheel 1 and the structure that disposes substitutes the foregoing description.
Promptly, with wheel drive case 10 with respect to a side of running vehicle wheel 1 deflection cross-car and be provided with, gearbox body 15 is arranged to its gearbox portion 22 to be disposed with the cross-car side that the opposite side of side is set of wheel drive case 10 with respect to running vehicle wheel 1 deflection, transmission case 19 is provided with wheel drive case 10 the identical cross-car side of side being set with respect to running vehicle wheel 1 deflection with operator 140,141, can realizes purpose of the present invention thus.
(second embodiment)
[overall structure of walk-behind type paddy-field work machine]
The overall structure of the walk-behind type paddy-field work machine of present embodiment is described according to Figure 27～Figure 30.Figure 27 is the unitary side view of walk-behind type paddy-field work machine; Figure 28 is the whole vertical view of walk-behind type paddy-field work machine; Figure 29 is the end view of walk-behind type paddy-field work machine front portion; Figure 30 is the vertical view of walk-behind type paddy-field work machine front portion.In addition, in Figure 29 and Figure 30, loam cake 224, lower cover 225 etc. have been omitted.
As Figure 27 and shown in Figure 28, the body 201 that travels of walk-behind type paddy-field work machine be provided with a wheel 203 and about two seedling-transplanting devices 208,209, be to constitute by single wheel two row rice transplanting forms.Engine E as the power source of walk-behind type paddy-field work machine is installed in the front portion of the body 201 that travels, on the horizontal left-external side of this engine E, is connected with gearbox body M.Gearbox body M extends to the downside of engine E, is extended with the transmission case 202 that travels from the rear portion of this extension.203 of a wheel is supported on the transmission case 202 that travels, and power passes to wheel 203 from engine E by the gearbox body M and the transmission case 202 that travels.
From the left and right sides portion of the gearbox body M left and right sides transmission case 204,205 that extended back, rearward end at this left side transmission case 204, the be connected seedling-transplanting device 208 in left side of traverse feed transmission case 206 by the left side, in the rearward end of right side transmission case 205, the right side seedling-transplanting device 209 that has been connected of the traverse feed transmission case 207 by the right side then.Thus, power from engine E passes on the left and right sides seedling-transplanting device 208,209 by gearbox body M, left and right sides transmission case 204,205 and left and right sides traverse feed transmission case 206,207, driving by seedling-transplanting device 208,209 is rotated, from seedling carrying stand 218 described later with rice shoot with the specified rate rice transplanting to the rice field.
As Figure 29 and shown in Figure 30, travel and be fixed with front carriage 210 on the transmission case 202, described front carriage 210 is to extend upward from the transmission case 202 that travels, and then is fixed with back carriage 211 on right side transmission case 205, and described back carriage 211 is to extend to the left from right side transmission case 205.Via front carriage 210 and back carriage 211 oil pressure single-acting formula lifting cylinder body 212 (being equivalent to the oil pressure device) is installed, the pipe side at the piston portion of lifting cylinder body 212 is equipped with spring 212a, and this spring 212a acts on as hanger spring.
The end of the bar side of lifting cylinder body 212 is supported on the front carriage 210 in the mode of freely rotating around the axle center of left and right directions, and the pipe side end of lifting cylinder body 212 then is supported on the back carriage 211 in the mode of freely rotating around the axle center of left and right directions.Thus, to supply with the bar side of lifting cylinder body 212 and when shortening lifting cylinder body 212 from the oil pressure of the oil pressure pump 34 that is installed in gearbox body M described later oil, the transmission case 202 that travels shakes downwards around the axle center P5 of left and right directions, thereby wheel 203 descends 201 risings of body (with reference to Figure 42) of travelling with respect to the body 201 that travels.On the other hand, when extending lifting cylinder body 212 as if be sidelong out start oil from the bar of lifting cylinder body 212, the 202 axle center P5 around left and right directions of transmission case that travel shake upward, thereby wheel 203 rises 201 declines of body (with reference to Figure 42) of travelling with respect to the body 201 that travels.
As Figure 27 and shown in Figure 28, from about the rearward end of traverse feed transmission case 206,207, be extended with the handle frame 213,214 of tubulose respectively.About the leading section and rearward end of handle frame 213,214 on, be supported with sliding rail 216 and guiding guiding piece 217, upside at this sliding rail 216 and guiding guiding piece 217, be provided with the seedling carrying stand 218 that can be free to slide at left and right directions, when this seedling carrying stand 218 is observed from the side, be configured to the posture that tilts to the back upper place along handle frame 213,214.
Top via the traverse feed transmission case 207 on the top of the traverse feed transmission case 206 in left side and right side is provided with transverse feed mechanism 219, and this transverse feed mechanism 219 is moving with seedling carrying stand 218 associations.Thus, power passes to right side seedling-transplanting device 209 from engine E by gearbox body M, right side transmission case 205 and right side traverse feed transmission case 207, simultaneously, be delivered on the transverse feed mechanism 219, whereby seedling carrying stand 218 horizontal reciprocal transportation and being driven to the left and right.
Both ends, the left and right sides at transverse feed mechanism 219, length feed actuating arm 293 (with reference to Figure 30) about being equipped with, this length feed actuating arm 293 is moving with length feed revolving member 296 associations, constitute longitudinal feed mechanism 220 thus, wherein, described length feed revolving member 296 is supported on the back of seedling carrying stand 218 with the axle center of left and right directions.Thus, by transverse feed mechanism 219, when seedling carrying stand 218 was driven by horizontal reciprocating feed at left and right directions, the rice shoot that is loaded on the seedling carrying stand 218 passed through longitudinal feed mechanism 220 according to specified rate length feed driving downwards.
Be extended with the left side brackets member 221 of tubulose from the top of the horizontal transmission case 206 in left side upward, be extended with the right side support element 222 of tubulose from the top of the horizontal transmission case 207 on right side upward.Via about support element 221,222 be fixed with preparation seedling carrying stand 223, this preparation seedling carrying stand 223 is used to load to the additional preparation rice shoot of seedling carrying stand 218.
Be provided with fuel tank Ea on the top of engine E, and be provided with loam cake 224, the switching that can fluctuate around the axle center of the left and right directions of end thereafter of this loam cake 224 in the mode of the upside of covering engine E and wheel 203.And lower cover 225 to be being set up from the form of downside covering engine E and gearbox body M, and this lower cover 225 is used to prevent that engine E and gearbox body M etc. and ridge etc. from contacting and damaged.
About ground connection hull 226 be supported on the bottom of left and right sides handle frame 213,214 with the form of can be at its rear portion rotating around the axle center of left and right directions, in the rearward end of left and right sides handle frame 213,214 manipulation hand bright 215 described later is installed.
[near the structure the gearbox body of walk-behind type paddy-field work machine]
Near the gearbox body M of walk-behind type paddy-field work machine structure is described according to Figure 29 and Figure 30.As Figure 29 and shown in Figure 30, the horizontal left-external side of the engine E that is provided with on the body 201 that travels is connected with gearbox body M, power passes to wheel 203 from engine E by the transport path in the gearbox body M, left and right sides seedling-transplanting device 208,209, on transverse feed mechanism 219 and the longitudinal feed mechanism 220, drive these machines thus.
Gearbox body M divides two parts to constitute, and comprising: the first casing M1, and the described first casing M1 is fixed on the horizontal left-external side of engine E; The second casing M2, the described second casing M2 is fixed on the horizontal left-external side of the first casing M1.In the left end of gearbox body M, be connected with the left side transmission case 204 of tubulose by flanged structure, and from the oblique left back of gearbox body M to extension, wherein, be built-in with left side rice transplanting driving shaft 267 described later in the described left side transmission case 204.In the right-hand end of gearbox body M, be connected with the right side transmission case 205 of tubulose by flanged structure, and from the oblique right back of gearbox body M to extension, wherein, be built-in with right side rice transplanting driving shaft 274 described later in the described right side transmission case 205.
In the right side of gearbox body M, be connected with the transmission case 202 that travels of tubulose by flanged structure, and rearward extend from gearbox body M, wherein, be built-in with the driving shaft 313 that travels described later in the described transmission case 202 that travels.
Be provided with mechanical speed regulator (not shown) on the top of engine E, and be supported with the throttle arm (throttle arm) (not shown) that is connected with this speed regulator in the mode of freely rotating around the axle center of above-below direction.End in throttle arm is connected with spring, and this spring is to the directive effect of the revolution that reduces engine E, and in another end of throttle arm, is connected with connecting line 230, and this connecting line 230 is connected (with reference to Figure 44) with accelerator rod 383 described later.
Thus, when drawing connecting line 230 when operation accelerator rod 383, throttle arm is resisted in the active force of spring and around rotating in the axle center of above-below direction, and whereby, the rotating speed of engine E rises.On the other hand, when relaxing connecting line 230 when operation accelerator rod 383, throttle arm is rotated around the axle center of active force around above-below direction by spring, thereby reduces engine speed.
[detailed structure of ground connection hull]
The detailed structure of ground connection hull 226 is described according to Figure 29 and Figure 30.As shown in figure 30, about the inside part of ground connection hull 226 front portions, be formed with the 226A of angular cutouts portion, the described angular cutouts 226A of portion when overlooking, from the front end of left and right sides ground connection hull 226 oblique in proceeds posterolateral tilt with linearity.
Because of the part of the 226A of angular cutouts portion breach, form the triangle of the limit of fore-and-aft direction than the length of side of left and right directions.Thus, the angular cutouts 226A of portion becomes the phenomenon of resistance in the time of can preventing from walk-behind type paddy-field work machine moved in the field.
Rear side at the 226A of angular cutouts portion, be formed with the whole 226B of ground portion in rear portion, the whole 226B of ground portion in this rear portion rearward extends with given length from the 226A of angular cutouts portion, and the rear side of the whole 226B of ground portion is provided with the rice transplanting arm 271,281 of seedling-transplanting device 208,209 at the rear portion.
Ground connection hull 226 is contacted with the field face and when the body 201 that travels is travelled, can carry out smooth to the rice field of implementing the position of rice transplanting at an easy rate and positively by being formed at 226A of angular cutouts portion and the whole 226B of ground portion in rear portion on the ground connection hull 226 by rice transplanting arm 271,281.
As Figure 29 and shown in Figure 30, if the front portion of left and right sides ground connection hull 226 be positioned at the downside of left and right sides transmission case 204,205 and be provided with, when because the travel lifting of body 201 or field face concavo-convex when waiting front portion of ground connection hull 226 to shake upward, has the worry of the anterior inside part interference left and right sides transmission case 204,205 of ground connection hull 226.In this embodiment, owing to be formed with the 226A of angular cutouts portion on the ground connection hull 226, therefore, though the front portion of ground connection hull 226 shake upward, the ground connection hull 226 about also can preventing by the 226A of angular cutouts portion and about transmission case 204,205 between interference.
Thus, carry out smooth to the field face in rice transplanting arm 271,281 positions easily and positively by ground connection hull 226, simultaneously, prevent the interference of 226 pairs of transmission cases of ground connection hull 204,205 and guarantee the wide swing range of ground connection hull 226, ground connection hull 226 easily can followed the trail of the field face and contact.
In addition, in this embodiment, represented when overlooking, be provided with from the example of the oblique interior proceeds posterolateral of the front end of ground connection hull 226 with the 226A of angular cutouts portion of linearity inclination, but, can also take different shapes, for example as the shape of the 226A of angular cutouts portion, can be provided with when overlooking, from about the front end of ground connection hull 226 oblique in the 226A of angular cutouts portion of proceeds posterolateral bending or meander-shaped.In addition, both can be set at short or length in the length of fore-and-aft direction the whole 226B of ground portion in rear portion, also can adopt the ground connection hull 226 that the whole 226B of ground portion in rear portion is not set and the 226A of angular cutouts portion only is set.
[drive mechanism of walk-behind type paddy-field work machine (driving transmission agent)]
The drive mechanism (driving transmission agent) of walk-behind type paddy-field work machine is described according to Figure 31～Figure 36.Figure 31 is the kinematic scheme of walk-behind type paddy-field work machine; Figure 32 is the unitary side view of gearbox body M; Figure 33 is the longitudinal sectional view of gearbox body M; Figure 34 is near the output shaft 231 of expression engine E and the cutaway view of the drive mechanism of driving transmission agent, is that section with the position by P1, P2 among Figure 32, P5 launches the figure that represents; Figure 35 is the cutaway view of drive mechanism of expression rice transplanting transmission system described later, is that section with the position by P2, P3 among Figure 32, P4 launches the figure that represents; Figure 36 is near the transverse sectional view the wheel support case 314.
As Figure 31 and shown in Figure 34, be extended with output shaft 231 to left-external side sidelong from engine E, on this output shaft 231, be embedded with first power transmission shaft 232 of tubular outward in the mode that can rotate integratedly around the axle center P1 of left and right directions.On first power transmission shaft 232, formed first and second input gear 232A, 232B with first power transmission shaft 232, be embedded with pump power shaft 233 at the leading section of first power transmission shaft 232, on this pump power shaft 233, be connected with oil pressure pump 234.Thus, power passes to driving transmission agent described later and rice transplanting transmission system from engine E by first and second input gear 232A, 232B, simultaneously, passes on the oil pressure pump 234 that is connected with pump power shaft 233.
In the following proceeds posterolateral of the output shaft 231 of engine E, via the first casing M1 and the second casing M2 of gearbox body M, the mode of freely rotating with the axle center P2 around left and right directions is supported with second power transmission shaft 235 (with reference to Figure 32).The output shaft 231 and second power transmission shaft 235 via engine E are equipped with speed changing portion 236 (being equivalent to adjusting portion), and this speed changing portion 236 has: first distribution gear 237, described first distribution gear 237 and the first input gear 232A engagement; Second distribution gear 238, described second distribution gear 238 and the second input gear 232B engagement; And speed change member 239.
On second power transmission shaft 235, be supported with first and second distribution gear 237,238 in the mode of freely rotating, this first and second distribution gear 237,238 meshes with first and second input gear 232A, 232B respectively.In the position that is provided with first distribution gear 237 of second power transmission shaft 235 be provided with between the position of second distribution gear 238, can rotate integratedly with second power transmission shaft 235 and outside the mode that axially is free to slide of second power transmission shaft 235, be embedded with speed change member 239.
As Figure 33 and shown in Figure 34, peripheral part at speed change member 239 is formed with speed change groove 239a, this speed change groove 239a engages with the control member 240a of control lever shaft 240, when rotating control lever shaft 240, speed change member 239 direction slippage to the left and right, thereby the speed change member 239 and first distribution gear 237 or 238 engagements of second distribution gear.
Control lever shaft 240 is being supported on the first casing M1 around the mode that rotate in the axle center of above-below direction, and this control lever shaft 240 is connected with motion arm 241.Via the motion arm 241 and the first casing M1 spring 242 is installed, gear lever 352 described later passes through this spring 242 to the high-speed side effect.Motion arm 241 is connected with gear lever 352 by first and second control stick 354,355 described later etc., thus, when when operating gear lever 352 described later and operate first and second control stick 354,355, control lever shaft 240 rotates around the axle center of above-below direction by motion arm 241.
Promptly, with gear lever 352 when pulling back to low-speed position operation and with first and second control stick 354,355, speed change member 239 slippage to the right, speed change member 239 and 237 engagements of first distribution gear, speed changing portion 236 is operated to low speed side thus, the speed change member 239 and first distribution gear 237 rotate integratedly, and power passes to second power transmission shaft 235 from first distribution gear 237 by speed change member 239.On the other hand, with gear lever 352 when high speed position operation and the active force by spring 242 shake motion arm 241, speed change member 239 slippage to the left, speed change member 239 and 238 engagements of second distribution gear, speed changing portion is operated to high-speed side thus, the speed change member 239 and second distribution gear 238 rotate integratedly, and power passes to second power transmission shaft 235 from second distribution gear 238 by speed change member 239.
Because it is different with the number of teeth of the second input gear 232B that the number of teeth of the first input gear 232A is set to, and it is different with the number of teeth of second distribution gear 238 that the number of teeth of first distribution gear 237 is set to, therefore, under the situation that situation that power is transferred by first input gear 232A and first distribution gear 237 from output shaft 231 and power are transferred by the second input gear 232B and second distribution gear 238 from output shaft 231, can change the rotating speed that passes to the power of second power transmission shaft 235 from output shaft 231, can be on two gears of height of high-speed side and low speed side with the powershift that passes to second power transmission shaft 235 from output shaft 231.
That is, when with speed change member 239 when first distribution gear, 237 sides (low speed side) are operated, can reduce the revolution of second power transmission shaft 235, can reduce the revolution of both sides' power of the transport path that is input to driving transmission agent and rice transplanting transmission system.On the other hand, when with speed change member 239 when second distribution gear, 238 sides (high-speed side) are operated, can increase the revolution of both sides' power of the transport path that is input to driving transmission agent and rice transplanting transmission system.
As Figure 31 and shown in Figure 34, right side at the speed changing portion 236 of second power transmission shaft 235, can be embedded with the side input gear 243 that travels with the mode of second power transmission shaft, 235 unitary rotation outward, the described side input gear 243 that travels is used for and will imports to driving transmission agent from the power of engine E.The left side of the speed changing portion 236 in second power transmission shaft 235, can be embedded with rice transplanting side input gear 244 with the mode of second power transmission shaft, 235 unitary rotation outward, described rice transplanting side input gear 244 is used for the power from engine E is imported to the rice transplanting transmission system.
At the downside (the following proceeds posterolateral of the output shaft 231 of engine E) of second power transmission shaft 235,, be supported with second jackshaft 300 (with reference to Figure 32) in the mode that can freely rotate around the axle center P5 of left and right directions via the first casing M1 and the second casing M2.In the left side of second jackshaft 300, be embedded with second travelling gear 301 outward in the mode of freely rotating, this second travelling gear 301 and side input gear 243 engagements of travelling that are installed on second power transmission shaft 235.Thus, when second power transmission shaft 235 rotated, second travelling gear 301 also rotated by the side input gear 243 that travels.
End at the transmission upstream side of second jackshaft 300 is equipped with the clutch 302 that travels, and this clutch 302 that travels is made of speed change member 303 and spring 304.The transmission downstream of second travelling gear 301 in second jackshaft 300 is can rotate integratedly with second jackshaft 300 and be embedded with speed change member 303 outside the mode that axially is free to slide of second jackshaft 300.
As Figure 33 and shown in Figure 34, peripheral part at speed change member 303, be formed with speed change groove 303a, this speed change groove 303a and the control member 305a that axle is supported on the control lever shaft 305 on the first casing M1 mesh, section portion via the speed change member 303 and second jackshaft 300 is equipped with spring 304, and this spring 304 is used for speed change member 303 is acted on to input side (left side).
On the first casing M1,, be fixed with motion arm 306 in the bottom of this control lever shaft 305 being supported with control lever shaft 305 around the mode that rotate in the axle center of above-below direction.Be connected with operating line 308 on motion arm 306, described operating line 308 is connected with the clutch lever 381 that travels described later.Thus, when handling described later travelling when clutch lever 381 and manipulation operations line 308, control lever shaft 305 rotates around the axle center of above-below direction by motion arm 306.
Promptly, when travel clutch lever 381 and when operating line pulled to the rear of manipulation, speed change member 303 resists the active force slippage to the right in spring 304, the engagement of the speed change member 303 and second travelling gear 301 is thrown off, travel clutch 302 to cutting off the side action, thus, the power from second travelling gear 301 to speed change member 303 is carried and is cut off.On the other hand, when manipulation the unlocking when bar 381a and shut-down operation line 308 rearward lifting of clutch lever 381 of travelling, speed change member 303 is by the active force slippage to the left of spring 304, speed change member 303 and 301 engagements of second travelling gear, the clutch 302 that travels thus moves to input side, the speed change member 303 and second travelling gear 301 rotate integratedly, and power passes to second jackshaft 300 from second travelling gear 301 by speed change member 303.
As Figure 31 and shown in Figure 34, right side at the first casing M1, be supported with the rotating box 310 that travels with respect to the first casing M1 in the mode that can freely rotate around the axle center P5 of left and right directions, second jackshaft 300 extends to the inside of this rotating box 310 that travels, and the right-hand end of second jackshaft 300 is supported on the rotating box 310 that travels in the mode of freely rotating.The right-hand end of rotating box 310 of travelling is supported on the bearing bracket stand member 276a in the mode of freely rotating, and described bearing bracket stand member 276a then extends (with reference to Figure 30) upward from intermediate box 276.
On the rearward end of rotating box 310 of travelling, be fastened with the transmission case 202 that travels of tubular, be built-in with the power transmission shaft 313 that travels at this transmission case 202 that travels.The power transmission shaft 313 that travels is connected by the taper transmission mechanism 312 and second jackshaft 300, and thus, when second jackshaft 300 rotated, the power transmission shaft 313 that travels rotated by taper transmission mechanism 312.
As Figure 31 and shown in Figure 36, in the rearward end of transmission case 202 of travelling, be fastened with wheel and support case 314, support on the case 314 can be supported with axletree 316 at this wheel around the mode that freely rotate in the axle center of left and right directions.The end that the wheel of power transmission shaft 313 of travelling supports case 314 sides is connected by taper transmission mechanism 315 and axletree 316.Thus, pass on the axletree 316 by taper transmission mechanism 315, thereby drive the wheel 203 that is rotatably installed on the axletree 316 from the power of the power transmission shaft 313 that travels.
[drive mechanism of walk-behind type paddy-field work machine (rice transplanting transmission system)]
The drive mechanism (rice transplanting transmission system) of walk-behind type paddy-field work machine is described according to Figure 31～Figure 39.Figure 37 is near the cutaway view the gear cap 255 between strain; Figure 38 is near the cutaway view the traverse feed transmission case 206 in left side; Figure 39 is near the cutaway view the traverse feed transmission case 207 on right side.
As Figure 31 and shown in Figure 35, downside the place ahead (downside the place ahead of the output shaft 231 of engine E) at second power transmission shaft 235, via the first casing M1 and the second casing M2 of gearbox body M, the mode of freely rotating with the axle center P3 around left and right directions is supported with first jackshaft 245 (with reference to Figure 32).On first jackshaft 245, be embedded with first travelling gear 246 outward in the mode of freely rotating, this first travelling gear 246 and rice transplanting side input gear 244 engagements that are installed on second power transmission shaft 235.
Transmission downstream at first travelling gear 246 is equipped with overload clutch 247, and this overload clutch 247 is used to prevent the overload of rice transplanting transmission system.Overload clutch 247 is made of clutch body 248, tabular component 249 and spring 250.On first jackshaft 245, can rotating integratedly with first jackshaft 245 and can outside the mode that axially is free to slide of first jackshaft 245, be embedded with clutch body 248, and spring 250 is installed via this clutch 248 and the discoideus tabular component 249 that is embedded in the section portion of first jackshaft 245 outward.Thus, under common drive state, by the active force of spring 250, the clutch body 248 and first travelling gear 246 mesh, and power passes to first jackshaft 245 from first travelling gear 246 by overload clutch 247.On the other hand, if on the rice transplanting transmission system in the transmission downstream of overload clutch 247 during the effect overload, 248 of clutch bodies resist in the active force of spring 250 and move to the left, the engagement of first travelling gear 246 and clutch 248 comes off, and 247 of overload clutches act on as torque limiter.
From the forward a little side of the downside of first jackshaft 245 (downside the place ahead of the output shaft 231 of engine E), via the first casing M1 and the second casing M2, to be supported with connecting axle 251 and rice transplanting power transmission shaft 252 (with reference to Figure 32) around the axle center P4 of left and right directions mode free to rotate.In the left end of rice transplanting power transmission shaft 252, be embedded with connecting axle 251 in the mode of freely rotating, by this connecting axle 251, the left end of rice transplanting power transmission shaft 252 is supported on the second casing M2 in the mode of freely rotating.
As Figure 35 and shown in Figure 37, on first jackshaft 245, with can and first jackshaft 245 mode of rotating and being removable at first jackshaft 245 integratedly gear 253 between first strain is installed, and on connecting axle 251, with can and connecting axle 251 mode of rotating and being removable at connecting axle 251 integratedly is equipped with and first strain between gear 254 between second strain of gear 253 engagements.
Thus, by gear 253,254 between first and second strain, can make the power speed changing that is transported to rice transplanting power transmission shaft 252 from first jackshaft 245.In addition, switch gear 253,254 between first and second strain by taking between the strain that releasably is installed on the second casing M2 gear cap 255, thereby the gear ratio that passes to the power of connecting axle 251 (rice transplanting power transmission shaft 252) from first jackshaft 245 is changed adjusting, can the actuating speed with respect to the seedling-transplanting device 208 of travel speed be changed thus, thereby can change distance between the strain of the rice shoot of rice transplanting to the rice field.
As Figure 31 and shown in Figure 35, rice transplanting clutch 256 is installed via connecting axle 251 and rice transplanting power transmission shaft 252.On connecting axle 251, form discoideus clutch body 257 with connecting axle 251.On rice transplanting power transmission shaft 252, can rotate integratedly with rice transplanting power transmission shaft 252 and outside the mode that axially is free to slide of rice transplanting power transmission shaft 252, be embedded with speed change member 258.Section portion and speed change member 258 via rice transplanting power transmission shaft 252 are equipped with spring 259, and speed change member 258 acts on to clutch body 257 sides (input side of rice transplanting clutch 256) by this spring 259.
As Figure 32 and shown in Figure 35, on the second casing M2, control lever shaft 260 is installed in the mode of can push-and-pull handling, on this control lever shaft 260, be connected with motion arm 261.Motion arm 261 is can be supported on around the mode that freely rotate in the axle center of left and right directions from the fulcrum 262 of first casing M1 extension, end at motion arm 261, be connected with an end of back-moving spring 263, the other end of this back-moving spring 263 then is supported on the transmission case 204 in left side.The other end of motion arm 261 is connected with operating line 264, and this operating line 264 then is connected with rice transplanting clutch lever 380 described later.Thus, when handling rice transplanting clutch lever 380 described later during manipulation operations line 264, push pull maneuver before and after control lever shaft 260 is done by motion arm 261.
That is, when pulling to the rear when manipulation rice transplanting clutch lever 380 and with operating line 264, control lever shaft 260 is rearward pulled out by motion arm 261, and speed change member 258 moves to the left by the active force of spring 259.And, speed change member 258 and clutch body 257 engagements, thus rice transplanting clutch 256 by to the input side operation, power passes to rice transplanting power transmission shaft 252 from connecting axle 251.On the other hand, when handling the unlocking when bar 380a and shut-down operation line 264 rearward lifting of rice transplanting clutch lever 380, active force motion arm 261 by back-moving spring 263 shakes, control lever shaft 260 by motion arm 261 forward thruster go into, thus, speed change member 258 resists in the active force of spring 259 and moves to the right.Then, the engagement of speed change member 258 and clutch body 257 comes off, and rice transplanting clutch 256 moves to cutting off side, thereby cuts off from the conveying of connecting axle 251 to the power of rice transplanting power transmission shaft 252.
As Figure 31 and shown in Figure 35, transmission downstream at rice transplanting clutch 256, by taper transmission mechanism 266 be connected the left side rice transplanting driving shaft 267, when with rice transplanting clutch 256 when input side is operated, power from engine E by rice transplanting power transmission shaft 252 and taper transmission mechanism 266 pass to the left side rice transplanting driving shaft 267 on.
On the second casing M2, be fastened with the left side cylindraceous transmission case 204 that extend oblique left back, in left side transmission case 204, in left side rice transplanting power transmission shaft 267 is housed, 267 of this left side rice transplanting power transmission shafts are from the second casing M2 oblique left back extension.
As Figure 31 and shown in Figure 38,, be fastened with left side traverse feed transmission case 206 in the rearward end of left side transmission case 204.On left side traverse feed transmission case 206, the mode of freely rotating with the axle center P6 around left and right directions is supported with turning cylinder 268, and this turning cylinder 268 is connected by the rearward end of taper transmission mechanism 269 with the rice transplanting driving shaft 267 in left side.On turning cylinder 268, be supported with the crank arm 270 of seedling-transplanting device 208, the rice transplanting arm 271 of the seedling-transplanting device 208 that on this crank arm 270, is connected in the mode of free rotating drive.
According to power from left side rice transplanting driving shaft 267, when turning cylinder 268 rotates by taper transmission mechanism 269, seedling carrying stand 218 drives by the horizontal to the left and right reciprocal transportation of transverse feed mechanism 219 described later, simultaneously, crank arm 270 is driven and rotates, rice transplanting arm 271 from the bottom seedling taking seedling of seedling carrying stand 218 and rice transplanting to the rice field.
As Figure 31 and shown in Figure 35, right-hand end at rice transplanting power transmission shaft 252, by the taper transmission mechanism 273 right side rice transplanting driving shaft 274 that has been connected, when with rice transplanting clutch 256 when input side is operated, pass on the right side rice transplanting driving shaft 274 by rice transplanting power transmission shaft 252 and taper transmission mechanism 273 from the power of engine E.
On the first casing M1, be fastened with the cylindrical member 275 that extend in the horizontal right outside.On cylindrical member 275, in the part of rice transplanting power transmission shaft 252 is housed, this rice transplanting power transmission shaft 252 extends in the outside to the right from the first casing M1.In the right-hand end of this cylindrical member 275, be fastened with middle housing 276.
On middle housing 276, be fastened with the right side cylindraceous transmission case 205 that extend oblique right back.In right side transmission case 205, in right side rice transplanting driving shaft 274 is housed, in the rearward end of this right side rice transplanting driving shaft 274, be fastened with the traverse feed transmission case 207 on right side.
As Figure 31 and shown in Figure 39, on the traverse feed transmission case 207 on right side, the mode of freely rotating with the axle center P6 around left and right directions is supported with turning cylinder 277, and this turning cylinder 277 is connected by the rearward end of taper transmission mechanism 278 with the rice transplanting power transmission shaft 274 on right side.On turning cylinder 277, be supported with the crank arm 280 of seedling-transplanting device 209, the rice transplanting arm 281 of the seedling-transplanting device 209 that on this crank arm 280, is connected in the mode of free rotating drive.
When the power of turning cylinder 277 bases from the rice transplanting driving shaft 274 on right side, and when rotating by taper transmission mechanism 278, seedling carrying stand 218 drives by the horizontal to the left and right reciprocal transportation of transverse feed mechanism 219 described later, simultaneously, crank arm 280 is driven and rotates, and rice transplanting arm 281 takes out rice shoot and rice transplanting to the rice field from the bottom of seedling carrying stand 218.
The traverse feed transmission case 207 on right side is made of two parts, promptly has: the first transmission case 207A, and this first transmission case 207A is connected the rearward end of the transmission case 205 that is positioned at the body inboard; The second transmission case 207B, this second transmission case 207B are fastened on the body outside of the first transmission case 207A, and, be configured to the structure that the second transmission case 207B can be taken to lateral outer side with respect to the first transmission case 207A.
Above turning cylinder 277, via the first transmission case 207A and the second transmission case 207B, the mode of freely rotating with the axle center P7 around left and right directions is supported with middle fulcrum 282, above middle fulcrum 282, across the first transmission case 207A and the second transmission case 207B, the mode of freely rotating with the axle center P8 around left and right directions is supported with traverse feed driving shaft 283.
On turning cylinder 277, the first traverse feed gear 284 is installed in the mode that can rotate and be removable at turning cylinder 277 with turning cylinder 277 integratedly.On middle fulcrum 282, in the mode of fulcrum 282 in the middle of can rotating integratedly and be removable at middle fulcrum 282 the second traverse feed gear 285 is installed, this second traverse feed gear 285 meshes with the first traverse feed gear 284.Thus, by the first and second traverse feed gear 284,285, can carry out from the speed change of turning cylinder 277 to the power of middle fulcrum 282 (traverse feed driving shaft 283) conveying.In addition, switch the first and second traverse feed gear 284,285 by taking the lateral transfer gear cap 286 that releasably is installed on the second transmission case 207B, can change the gear ratio that passes to the power of middle fulcrum 282 (traverse feed driving shaft 283) from power transmission shaft 277, traverse feed speed can be changed thus, thereby the rice shoot amount of rice transplanting can be changed with respect to the transverse feed mechanism 219 of the actuating speed of seedling-transplanting device 208,209.
Via middle fulcrum 282 and traverse feed driving shaft 283 chain-drive mechanism 287 is installed.Chain-drive mechanism 287 has: first sprocket 288, and it is with on the fulcrum 282 in the middle of can being embedded in outward with the mode of middle fulcrum 282 unitary rotation; Second sprocket 289, it is being embedded in outward with the mode of traverse feed driving shaft 283 unitary rotation on the traverse feed driving shaft 283; Driving-chain 290, this driving-chain 290 is reeled via first and second sprocket 288,289.Thus, when middle fulcrum 282 bases were rotated from the power of turning cylinder 277 and by the first and second traverse feed gear 284,285, traverse feed driving shaft 283 was driven by chain-drive mechanism 287 and rotates.
As Figure 31, Figure 38 and shown in Figure 39, on traverse feed driving shaft 283, be formed with reciprocal spiral grooves 283a, slide plate 291 with can be outside the mode that left and right directions slides embedding and being installed on the traverse feed driving shaft 283, and slide plate 291 is provided with the fastened component 291a that can rotate and be entrapped in described reciprocal spiral grooves 283a.On slide plate 291, be connected with seedling carrying stand 218 by connecting elements 292, by the rotation of traverse feed driving shaft 283 on assigned direction, slide plate 291 transversely feeding driving shaft 283 moves back and forth with given stroke, accompany therewith, seedling carrying stand 218 also moves back and forth.
At the two ends, the left and right sides of feeding driving shaft 283, be embedded with length feed actuating arm 293 outward in mode that can unitary rotation, at the leading section of this length feed actuating arm 293, be supported with front end runner 293a in the mode of freely rotating.On slide plate 291, be supported with arm member 294 in the mode of freely shaking, be extended with rod member 294a from this arm member 294 two outsides to the left and right.At the back of seedling carrying stand 218, be supported with fulcrum 295 in the mode of freely rotating around the axle center of left and right directions, on this fulcrum 295, be connected with a plurality of length feed revolving members 296 in the mode that can rotate integratedly.Central portion is fixed with arm 297 in the left and right sides of fulcrum 295, and this arm 297 is connected on the arm member 294 by bar 298.
During end of travel about seedling carrying stand 218 every reaching, the front end runner 293a of length feed actuating arm 293 then with the rod member 294a butt of arm member 294, make bar 298 make push pull maneuver thus, length feed revolving member 296 is rotated on given rotation direction with specified rate, thereby the rice shoot that is loaded on the seedling carrying stand 218 is moved downwards with specified rate.
[near the detailed structure the oil pressure pump]
Explanation is installed near the detailed structure the oil pressure pump 362 on the gearbox body M according to Figure 32, Figure 34, Figure 40, Figure 41.Figure 40 is near the longitudinal profile front view the oil pressure pump 234; Figure 41 is near the longitudinal profile end view the oil pressure pump 234; Figure 42 is near the right side diagrammatic sketch the lifting cylinder body 212.
As Figure 32 and shown in Figure 34, the pump power shaft 233 with output shaft 231 concentric shape of being connected on the output shaft 231 of engine E in the left end of this pump power shaft 233, is connected with cycloid formula oil pressure pump 234 in the mode that can rotate integratedly.On the face of the horizontal left-external side of the second casing M2 of gearbox body M, be connected with valve body 318, and oil pressure pump 234 is housed in the described valve body 318.
As Figure 40 and shown in Figure 41, right flank at valve body 318, form the 318a of pump box portion integratedly with valve body 318, there is recess cylindraceous in the left side of the 318a of this pump box portion, the revolving member 234a of charge of oil press pump 234 in the 318a of this pump box portion, at the horizontal left-external side face of the second casing M2 of gearbox body M, connect valve body 318 by O type ring.Thus, constitute oil pressure pump 234 by 318a of pump box portion and revolving member 234a.
Be formed with at the second casing M2 and suck oil circuit 319 and suction inlet 320, will be drawn into the start oil of oil pressure pump 234 by suction inlet 320, be ejected among pump intake (pump port) P that is formed on the valve body 318 from sucking oil circuit 319.
Be formed with safety valve 321, bobbin 322, connector C and reservoir port T on valve body 318, reservoir port T is communicated with gearbox body M, thus, can be discharged in the gearbox body M from the start oil of oil pressure pump 234 and bobbin 322.
The pump intake P of oil pressure pump 234 is connected with bobbin 322 by safety valve 321, and bobbin 322 is supported in the mode of freely rotating around the axle center of left and right directions.Thus, rotate by making bobbin 322, change is formed at the oil circuit direction of bobbin 322, thereby can switch in following three positions, and this three position is: lifting position from oil pressure oil to connector C that supply with; Cut-out is to the neutral position of the oil pressure oil supply of connector C; And the down position that connector C is connected with reservoir port T.
Thus, when if oil pressure pump 234 rotates by the rotation of output shaft 231, oil pressure oil then supplies to safety valve 321 from oil pressure pump 234, when the oil pressure oil from oil pressure pump 234 reaches setting pressure, then is discharged from reservoir port T from part or all of the oil pressure of oil pressure pump 234.The oil pressure oil that is controlled in setting pressure by safety valve 321 is fed into bobbin 322, and is supplied to connector C by the operating position of bobbin 322.
As Figure 30, Figure 32, shown in Figure 42, connector C is with mode and valve body 318 moulding integratedly towards the place ahead, and the screw portion at this connector C is connected with oil pressure pipe arrangement 325 by pipe joint 324, and described oil pressure pipe arrangement 325 is made by the rubber-like metal tube.
Oil pressure pipe arrangement 325 extends to the front lower place from the part that is connected with connector, and with from the mode of the front side of this elongated end by gearbox body M to right-hand extension.The oil pressure pipe arrangement 325 that extends to the right side of gearbox body M extends to oblique back upper place from the elongated end on right side, from this elongated end further to the extension of the oblique back lower place, thereby be connected with connecting portion 212b on being formed at lifting cylinder body 212 by pipe joint 324.
The hermetically-sealed construction of Metal Contact formula is adopted at the both ends of oil pressure pipe arrangement 325, so that when pipe joint 324 being screwed into connector C and connecting portion 212b side, the face of oil pressure pipe arrangement 325 front ends contacts with the face that is formed at connector C and connecting portion 212b, guarantees the sealing of oil pressure pipe arrangement 325 thus.
As Figure 30 and shown in Figure 42, the length of oil pressure pipe arrangement 325 is set to longer, and the variation when being set to the position lifting of connecting portion 212b of lifting cylinder body 212 is little, therefore, even being stretched, cylinder body 212 under the situation of the position of the connecting portion 212b of change lifting cylinder body 212, also can allow the position of the connecting portion 212b of lifting cylinder body 212 to change by the strain of oil pressure pipe arrangement 325.
Specifically, shown in the solid line and double dot dash line of Figure 42, when changing the position of connecting portion 212b of lifting cylinder body 212 by telescopic lifting cylinder body 212, in oil pressure pipe arrangement 325, on the pipe arrangement part of the fore-and-aft direction of the right side of gearbox body M, act on bending stress, simultaneously, in oil pressure pipe arrangement 325, on the pipe arrangement part of the left and right directions of the front portion of gearbox body M, act on torsional stress.Thus, can allow the position of the connecting portion 212b of lifting cylinder body 212 to change by the strain of oil pressure pipe arrangement 325.At this moment, even under the situation of effect bending stress and torsional stress on the oil pressure pipe arrangement 325, the reaction force of the above-below direction that causes of the very little strain of effect only on the leading section of the connector C of oil pressure pipe arrangement 325 and connecting portion 212b side because of oil pressure pipe arrangement 325, therefore, can not damage sealing in the connecting portion at oil pressure pipe arrangement 325 both ends.
Thus, when for example waiting the connecting portion 212b of the connector C that connects valve body 318 and lifting cylinder body 212 with the oil pressure flexible pipe (not shown) of rubber system, do not need to be used to support (not shown) such as flexible pipe clamping plate of oil pressure flexible pipe, when therefore can simplify pipe connecting structure, can on roughly the same position, pass through oil pressure pipe arrangement 325 during the assembling walk-behind type paddy-field work machine, therefore, the deviation in oil pressure pipe arrangement path can be prevented, interference can be prevented because of the flexible oil pressure pipe arrangement 325 that causes of lifting cylinder body 212 and gearbox body M etc.
In addition, in this embodiment, the oil pressure pipe arrangement 325 that only shows with metal control connects the connector C of valve body 318 and the example of lifting cylinder body 212, but also can adopt the structure that connects oil pressure flexible pipe (not shown) on the part of oil pressure pipe arrangement 325.Specifically, for example can adopt, at the oil pressure pipe arrangement 325 that adopts metal control from the position of the peripheral part of connector C by gearbox body M, the structure that the end of the connecting portion 325b side of oil pressure pipe arrangement 325 is connected with the connecting portion 212b of lifting cylinder body 212 with short oil pressure flexible pipe (not shown).
[detailed structure of handle frame]
The detailed structure of handle frame 213,214 is described according to Figure 43～Figure 45.Figure 43 is the end view at body 201 rear portions of travelling; Figure 44 is the vertical view at body 201 rear portions of travelling; Figure 45 is the longitudinal profile end view of the front portion of handle frame 213,214.
As Figure 43 and shown in Figure 44, about the following rear portion of traverse feed transmission case 206,207, the handle frame 213,214 about being fixed with.About handle frame 213,214 have: tabular flange part 327, it is fixed on the leading section of left and right sides handle frame 213,214; Handle connecting elements 328, it is fixed on the rearward end of handle frame 213,214; Hog frame member 330.
As shown in figure 45, the flange part 327 of left and right sides handle frame 213,214 rearward enters the leading section of the fixed-site of specific length at handle frame 213,214 at the front end from handle frame 213,214, so that leading section 213A, the 214A of handle frame 213,214 are forwards outstanding from flange part 327.On the other hand, be formed with the bearing surface 206a, the 207a that are used for the front face side butt of flange part 327 at the following rear portion of left and right sides traverse feed transmission case 206,207, forwards form recess 206b, the 207b that falls in cylindric from this bearing surface 206a, 207a.
Will be embedded and be inserted on recess 206b, the 207b of traverse feed transmission case 206,207 from the flange part 327 of handle frame 213,214 outstanding leading section 213A, 214A, with the front face side of the flange part 327 of handle frame 213,214 and bearing surface 206a, the 207a butt of traverse feed transmission case 206,207, by fastening in addition with a plurality of bolt 329, handle frame 213,214 can be fixed on the following rear portion of traverse feed transmission case 206,207 thus from the rear.
Operate manipulation hand bright 215 described later and under the situation of effect bending force or shearing force on the connecting portion between traverse feed transmission case 206,207 and the handle frame 213,214, leading section 213A, the 214A that clamping force by bolt 329 adds the butt of bearing surface 206a, 207a of the front of upper flange part 327 and traverse feed transmission case 206,207 and handle frame 213,214 snaps in recess 206b, 207b's, bending force and shearing force that can the connecting portion of supporting role between traverse feed transmission case 206,207 and handle frame 213,214.Thus, handle frame 213,214 firmly can be connected on the traverse feed transmission case 206,207, the enough simple structures of energy improve the bonding strength of traverse feed transmission case 206,207 and handle frame 213,214.
In addition, in this embodiment, show the recess 206b, the 207b that form concavity in traverse feed transmission case 206,207 sides, form the leading section 213A of convex, the example of 214A in handle frame 213,214 sides, but also traverse feed transmission case 206,207 sides can be formed convex, handle frame 213,214 sides are formed concavity.In addition, about traverse feed transmission case 206,207 sides that form concavity or convex and the shape of handle frame 213,214 sides,, also can take different shapes so long as can bring into play same function.
As Figure 43 and shown in Figure 44, when observing from the side, left and right sides handle 213,214 rearward extends from the part that is connected with traverse feed transmission case 206,207, and forms from this elongated end along seedling carrying stand 218 the back shape to the bending of oblique back upper place.
As shown in figure 45, when observing from the side, via right handles frame 213 with the part of curved shape moulding and the part with the curved shape moulding of left handle frame 214, be fixed with hog frame member 330 to " コ " of under shed shape.In the inboard of left and right sides handle frame 213,214, be fixed with operation utensil about described later with carriage 338, be fixed with hog frame member 330 via the operation utensil about this with the medial surface of carriage 338.In addition, in this embodiment, show by operation utensil and the example of hog frame member 330 is installed, but also can adopt the direct fixedly structure of hog frame member 330 on left and right sides handle frame 213,214 with carriage 338.
The position of hog frame member 330 be positioned at seedling taking seedling amount governor motion 332 described later seedling sending seedling amount adjusting rod 342 left and right directions shake fulcrum a near, and be positioned at the hull height governor motion 345 that is used for lifting ground connection hull 226 described later hull height adjusting rod 350 left and right directions shake fulcrum b near, promptly be arranged between seedling sending seedling amount adjusting rod 342 and the hull height adjusting rod 350.Thus, the processing ease that hog frame member 330 can be arranged on because of seedling sending seedling amount adjusting rod 342 and hull height adjusting rod 350 produces on the position of irrational active force left and right sides handle frame 213,214, can strengthen left and right sides handle frame 213,214 effectively by enough lighter hog frame members 330.
In addition, the longitudinal profile shape of hog frame member 330 forms along the long shape of the fore-and-aft direction of left and right sides handle frame 213,214 when observing from the side, therefore, can suppress the distortion of left and right sides handle frame 213,214 effectively.
In addition, in this embodiment, show shape with hog frame member 330 and form example, but also can take different shapes as the shape of hog frame member 330 to " コ " of under shed shape, for example, also can constitute hog frame member 330 with pipe material or cornue material.
[detailed structure of seedling taking seedling amount governor motion]
The detailed structure of seedling taking seedling amount governor motion 332 (being equivalent to governor motion) is described according to Figure 43～Figure 47.Figure 46 is the longitudinal sectional view of explanation seedling taking seedling amount governor motion 332 and hull height governor motion 345 structures, is the figure that a part of parts are decomposed; Figure 47 is the transverse, top-down-view of explanation seedling taking seedling amount governor motion 332 structures.
As Figure 43 and shown in Figure 44, about the front portion of handle frame 213,214 seedling taking seedling amount governor motion 332 is installed, 342 (being equivalent to adjusting rod) of operation seedling taking seedling amount adjusting rod, and can regulate seedling taking seedling amount from seedling carrying stand 218 by the rice transplanting arm 271,281 of seedling-transplanting device 208,209.
As Figure 45 and shown in Figure 46, at the back of seedling carrying stand 218, be fixed with guide rail component 333, this guide rail component 333 is supported on the rail plate 216 by sliding component 331.Thus, the bottom of seedling carrying stand 218 is with can be supported in the mode of left and right directions slippage.
About the lower inside of handle frame 213,214, be fixed with carriage 334 to " コ " of inner opening shape, bend in the upper end and the bottom of this carriage 334, be formed with up/down perforation hole 334a, when described through hole 334a observes in the side, in the direction that behind seedling carrying stand 218 oblique, makes progress, be communicated with to oblique back upper place.
In the 334a of up/down perforation hole, by resinous metal (upper 335, being embedded with elevating lever 336,, be fixed with sliding rail 216 by supporting member 337 in the upper end of this elevating lever 336 in the mode of the free slippage of direction that behind seedling carrying stand 218 oblique, makes progress.
Because elevating lever 336 is supported in the mode of free slippage by resinous metal (upper member 335, therefore, by operating seedling taking seedling amount adjusting rod 342 described later, elevating lever 336 easily can be carried out slippage with respect to carriage 334, simultaneously, can prevent getting rusty with the part of the mode supporting elevation bar 336 that is free to slide.Thus, for example with by the situation of carriage 334 direct supporting elevation bars 336 compare, maintenance cost can be suppressed at low cost.
As Figure 45～shown in Figure 47, about the lower inside of handle frame 213,214, be fixed with the left and right sides operation utensil carriage 338 of vertically flat shape, in the front upper of this left and right sides operation utensil with carriage 338, be formed with the first installing hole 338a, when the described first installing hole 338a observes from the side, for upwards open.From about the top of the first installing hole 338a be inserted with control lever shaft 339, this control lever shaft 339 by about carriage 340 be fastened on operation utensil with on the carriage 338, thus, control lever shaft 339 mode of freely rotating with the fulcrum a around left and right directions by carriage 340 is supported on operation utensil with on the carriage 338.
At the both ends, the left and right sides of control lever shaft 339, the arm member 341 about being fixed with, and be arranged to the leading section and the supporting surface 337a butt of the arm member 341 about this.In the right side of control lever shaft 339, be fixed with seedling taking seedling amount adjusting rod 342, at the bend of outside curve to the right that forms of the top one of seedling taking seedling amount adjusting rod 342.
As Figure 44 and shown in Figure 45, on right side handle portion 214, be fastened with bar guide part 343 from its inboard by pressure forming.On bar guide part 343, be formed with the first guide part 343A and the second guide part 343B, wherein, the described first guide part 343A is used to install seedling taking seedling amount adjusting rod 342, and the described second guide part 343B is used to install hull height adjusting rod 350 described later.
On the first guide part 343A of bar guide part 343, be formed with a plurality of guide groove with given interval, this guide groove engages with the bend of seedling taking seedling amount adjusting rod 342 on being installed in the first guide part 343A.On the second guide part 343B of bar guide part 343, be formed with a plurality of guide groove with given interval, this guide groove engages with the bend of hull height adjusting rod 350 on being installed in the second guide part 343B.
When the rearward end of holding seedling taking seedling amount adjusting rod 342, seedling taking seedling amount adjusting rod 342 advanced a little left and when making it that strain take place, seedling taking seedling amount adjusting rod 342 bend come off with first the engaging of guide part 343A, thereby seedling taking seedling amount adjusting rod 342 can shake operation around the fulcrum a of left and right directions.And, seedling taking seedling amount adjusting rod 342 is shaken operation, arm member 341 about making by control lever shaft 339 shakes around the fulcrum a of left and right directions, thereby supporting member 337 can be pushed to or push to the direction that makes progress behind seedling carrying stand 218 oblique.Thus, the sliding rail 216 that is supported on the upper face side of supporting member 337 moves to the direction that makes progress behind seedling carrying stand 218 oblique, with respect to rice transplanting arm 271, the position of the bottom of the seedling carrying stand 218 of 281 positions changes, when on the position of having regulated seedling taking seedling amount, stopping the operation that advances of seedling taking seedling amount adjusting rod 342 left, restoring force seedling taking seedling amount adjusting rod 342 by strain is certain to the right, thereby the bend of seedling taking seedling amount adjusting rod 342 engages with the guide groove of the first guide part 214A once more, can keep the position of the seedling taking seedling amount adjusting rod 342 through overregulating seedling taking seedling amount.At this moment, owing to be formed with a plurality of guide groove with given interval among the first guide part 343A of bar guide part 343, therefore,, can change seedling taking seedling amount with specified rate by change the clamped position of seedling taking seedling amount adjusting rod 343 and guide groove interimly.
[hull height governor motion]
According to Figure 44～Figure 46 and Figure 48 hull height governor motion 345 detailed structure of (being equivalent to governor motion) is described.Figure 48 is the longitudinal profile rearview that is used to illustrate hull height governor motion 345 structures.As Figure 46 and shown in Figure 48,, can change and regulate the height of ground connection hull 226 by the hull height adjusting rod 350 (being equivalent to adjusting rod) of operation hull height governor motion 345.
The left and right sides operation utensil of the lower inside of the handle frame 213,214 about being fixed in is formed with the second installing hole 338b for opening when observing from the side downwards with the rear lower of carriage 338.From about the below of the second installing hole 338b be inserted with control lever shaft 346, this control lever shaft 346 is fastened on operation utensil with on the carriage 338 by left and right sides carriage 347, thus, control lever shaft 346 is by carriage 347, and the mode of freely rotating with the fulcrum b around left and right directions is supported on operation utensil with on the carriage 338.
As Figure 44～shown in Figure 46, two ends, the left and right sides at control lever shaft 346, swing arm 348 about being fixed with, the leading section of the swing arm 348 about this is supported with the top of the carriage 349 that is connected with the rear portion upper face side of ground connection hull 226 in the mode of freely rotating around the axle center of left and right directions.Right side at the seedling taking seedling amount adjusting rod 342 that sidepiece is arranged of control lever shaft 346 is fixed with hull height adjusting rod 350, on the top of hull height adjusting rod 350, forms the bend of outside curve to the right integratedly.
When the rearward end of holding hull height adjusting rod 350, hull height adjusting rod 350 advanced to the left a little and when making it that strain take place, the bend of hull height adjusting rod 350 comes off with second the engaging of guide part 343B, and hull height adjusting rod 350 can shake operation around the fulcrum b of left and right directions.And, shake around the fulcrum b of left and right directions by hull height adjusting rod 350 being shaken operation, make the arm 348 that rocks from side to side that is fixed on control lever shaft 346, can lifting ground connection hull 226.Thus, can regulate the height of ground connection hull 226.
On the position of height of ground connection hull 226 having been carried out regulating, when stopping operation that hull height adjusting rod 350 advances to the left, restoring force by strain, hull height adjusting rod 350 moves to the right, thus, the bend of hull height adjusting rod 350 engages with the guide groove of the second guide part 343B once more, thereby can keep the position of the hull height adjusting rod 350 of adjusted height.At this moment, because going up, the second guide part 343A of bar guide part 343 is formed with a plurality of guide groove with given interval, therefore, by change the clamped position of hull height adjusting rod 350 and guide groove interimly, can change the height of ground connection hull 226 with assigned altitute.
Since the swing arm 348 about the both ends, the left and right sides of control lever shaft 346 are fixed with, therefore, the ground connection hull 226 about can changing and regulate by a hull height adjusting rod 350.Thus, for example compare with the situation that left and right sides ground connection hull 226 is changed adjusting respectively, can simplify the structure of hull height governor motion 345, simultaneously, do not need to make the height uniform operation of left and right sides ground connection hull 226, therefore, can easily carry out adjusting to the height of left and right sides ground connection hull 226.
[syndeton of gear lever]
According to Figure 44, Figure 45 and Figure 49 gear lever 352 syndeton of (being equivalent to action bars) is described.Figure 49 is a near end view the control stick 215 in use posture described later.
As Figure 44 and shown in Figure 45, left end at the control lever shaft 339 of seedling taking seedling amount governor motion 332, mode is supported with linking arm 353 to rotate freely, one end (leading section) of this linking arm 353 is connected with first action bars 354, this first action bars 354 is by extending to oblique front upper place between the transmission case 204 in wheel 203 and left side, thereby be connected with the motion arm 241 of control lever shaft 240, wherein, control lever shaft 240 is the top (with reference to Figure 32) that is supported on gearbox body M in the mode of freely rotating around the axle center of above-below direction.
As Figure 44 and shown in Figure 49, via about the rear portion of handle frame 213,214 be fixed with support element 356 to " コ " of under shed shape.The bottom of the left and right sides central portion of support element 356 is formed with shaft sleeve part 356a, on this shaft sleeve part 356a, is supported with gear lever 352 in the mode of freely shaking at left and right directions.
On the bend 356b at support element 356 rear portions, be formed with bar guide part 356c, gear lever 352 shakes to the left and right along this bar guide part 356c, and the scope of rocking from side to side of gear lever 352 is limited in the two ends, the left and right sides of bar guide part 356c.
At the front and back of gear lever 352 central portion, be connected with an end (rearward end) of spring 357, the other end of this spring 357 (leading section) is connected with the other end (rearward end) of linking arm 353 by second action bars 355.Thus, be used to operate the motion arm 241 of control lever shaft 240 of the speed changing portion 236 of gearbox body M, be connected on the gear lever 352 by first action bars 354, linking arm 353, second action bars 355 and spring 357.
As mentioned above, by connecting gearbox body M and gear lever 352 with first and second connecting rod 354,355, even under the long-term situation of using the breakage that produces first and second connecting rod 354,355 etc., also can need not to change first and second connecting rod 354,355 self and wait by welding first and second connecting rod 354,355 is keeped in repair.Thus, in the time of can not producing connections such as for example using connecting line (not shown),, thereby can improve the maintainability of walk-behind type paddy-field work machine if do not change the situation that parts then can't use walk-behind type paddy-field work machine.
Gear lever 352 is being operating as under the state of low-speed position, is resisting when the active force of spring 357 shakes operation with gear lever 352 to the left above stop DP, the left-hand end butt of gear lever 352 and bar guide part 353c, gear lever 352 are handled and are high speed position.Thus, spring 242 by gearbox body M side is forwards strained first action bars 354, and pass through linking arm 353 second action bars 355 is forwards strained, thereby the motion arm 241 of control lever shaft 240 is forwards shaken, the speed changing portion 236 of gearbox body M is handled to high-speed side.On the other hand, handled to the state of high speed position at gear lever 352, resist when the active force of spring 357 shakes operation with gear lever 352 to the right above stop DP, the right-hand end butt of gear lever 352 and bar guide part 356c, gear lever 352 is handled to low-speed position.Thus, second action bars 355 is rearward strained, and by linking arm 353 first action bars 354 is rearward strained, thereby make the motion arm 241 of control lever shaft 240 rearward shake operation, the speed changing portion 236 of gearbox body M is handled to low speed side.
Be fixed with guiding guiding piece 217 in the left and right sides of support element 356 one, this guiding guiding piece 217 is used for supporting in the mode that is free to slide the rear portion of seedling carrying stand 218.And the guide part 17a of this guiding guiding piece 217 is embedded on the guide rail component 358 at back at the rear portion that is installed on seedling carrying stand 218.In addition, ato unit E main switch of using (not shown) and the throttling rod (not shown) that is connected with engine E are installed in support element 356.Thus, support element 356 not only can be come dual-purpose as the stiffener that connects left and right sides handle frame 214,215, support element 356 dual-purpose can also be come as the member that guiding guiding piece 217, main switch and throttling rod are installed, the number of components of walk-behind type paddy-field work machine can be cut down thus.
Since support element 356 be set at control crank 215 near, therefore, gear lever 352 that can operating frequency is higher, the main switch that ato unit E uses and throttling rod centralized configuration are in the near position of hand from the operator of manipulation handle 215.Thus, can operate gear lever 352, main switch and throttling rod, can improve the operability of operation gear lever 352, main switch and throttling rod with move (the little action) of little hand or wrist.
[supporting construction of ground connection fore-body]
The supporting construction of ground connection hull 226 front portions is described according to Figure 52 and Figure 53.Figure 52 is the end view of the supporting construction of explanation ground connection hull 226 front portions, and Figure 53 is the vertical view of the supporting construction of explanation ground connection hull 226 front portions.Shown in Figure 52 and Figure 53, about the leading section of ground connection hull 226, be fixed with the front carriage 360 of " コ " shape of upward opening, on this front carriage 360, by bar 364, and be supported with intermediate member 363 in the mode of freely rotating round the axle center of left and right directions.
Be formed with slotted hole 363a at intermediate member 363, and dead lever 362 is communicated with in this slotted hole 363a, wherein, described dead lever 362 be from about the dead lever that extends to lateral outer side of the bottom of front and back central portion of transmission case 204,205.
On the second casing M2 of gearbox body M, be fixed with the left side bracket 365 of fore-and-aft plane shape, on the first casing M1 of gearbox body M, be fixed with the right brackets 366 of fore-and-aft plane shape.About the upper end of carriage 365,366 on be fixed with the fulcrum 367 of left and right directions.
On fulcrum 367, be supported with arm member 368 in the mode of freely rotating, and be fixed with motion arm 369 in the left outer end that is installed on the bobbin 322 on the valve body 318.On motion arm 369, be supported with runner 369a in the mode of freely rotating, this runner 369a and the guide part 368a butt that is formed at the leading section of arm member 368 around the axle center of left and right directions.
On fulcrum 367, the leading section of the intermediate connecting rod 370,371 about being supported with in the mode of freely rotating, the rearward end of the intermediate connecting rod 370,371 about this with about bar 364 be connected, the linkage pin 372 of left and right directions across about the front portion of intermediate connecting rod 370,371 and loosening chimeric.
Via arm member 368 and motion arm 369 spring 373 is installed, is connected with the inner wire of connecting line 375 by the Y-piece 374 that is formed with slotted hole 374a at arm member 368, this connecting line 375 is connected with oil pressure elevating lever 382 described later.Thus, when operation oil pressure elevating lever 382 described later, motion arm 368 shakes by connecting line 375, and bobbin 322 rotates corresponding to the operation of oil pressure elevating lever 382, thus can telescopic lifting cylinder body 212.
That is, when process oil pressed elevating lever 382 that connecting line 375 is forwards strained, arm member 368 shook downwards, thereby makes the guide part 368a of arm member 368 and the runner 369a butt of motion arm 369, and motion arm 369 shakes downwards.So bobbin 322 is rotated operation, thereby bobbin 322 is handled to neutral position (from the neutral position to the lifting position) from down position.On the other hand, when press by process oil elevating lever 382 stop connecting line 375 lift operation backward the time, shake upward according to the active force motion arm 369 of spring 373.And bobbin 322 is rotated operation, thereby bobbin 322 is handled to neutral position (from the neutral position to the down position) from lifting position.
In addition, when about the front portion of ground connection hull 226 all rise to more than the assigned altitute, linkage pin 372 contacts with arm member 368 and when shaking, motion arm 369 shakes by the guide part 368a and the runner 369a of arm member 368.So it doesn't matter and rotate in the operation of bobbin 322 and oil pressure elevating lever 382, bobbin 322 is automatically handled to the neutral position, keeps thereby the position of having risen of the body 201 that travels is carried out.
In addition, in this embodiment, be rotated operation with showing the operation of bobbin 322 and oil pressure elevating lever 382 it doesn't matter, thereby the structure that the body 201 that travels rises automatically, but, also for example can adopt, operating line 375 directly is connected with motion arm 369 on being fixed on bobbin 322, bobbin 322 only rotates according to the operation of oil pressure elevating lever 382 and handles that supreme raise-position is put, the structure of neutral position and down position.At this moment, for example also can abolish the slotted hole 374a of Y-piece 374, Y-piece 374 directly is connected with motion arm 369, shake the structure of motion arm 369 by operating line 375.
[near the detailed structure the control crank]
According to Figure 27, Figure 28, Figure 49～Figure 51 near the control crank 215 detailed structure is described.Figure 49 is near the end view the control crank 215 in the use posture described later, and Figure 50 is near the end view the control crank 215 of accommodating in the posture described later, and Figure 51 is near the vertical view the 215a of left hand grip portion.
Shown in Figure 49～Figure 51, the handle connecting elements 328 of the rearward end of the handle frame 213,214 about being fixed in, its section shape forms the L shape, stringer board front portion partly at this handle connecting elements 328, be formed with installing hole 328c, when described installing hole 328c observes from the side to the front upper place opening.At the stringer board rear portion partly of handle connecting elements 328, be formed with the through hole 328a of left and right directions, the medial surface of the stringer board part in the position of this through hole 328a is fixed with nut 328b.
Control crank 215 is by with bending and the moulding backward of the both ends, the left and right sides of pipe material, have at long 217A of front carriage portion of left and right directions and the 215B of front and back support portion from about two ends, the left and right sides brake forming rearward of the 215A of this front carriage portion, therefore from overlooking when observing, be shaped to aft-opening " コ " shape, this backward bending and moulding about the 215B of front and back support portion on resinous left and right sides handle portion 215a is installed.
In the left and right sides of control crank 215 one, be fixed with the handle angle adjustment means 377 of vertically flat shape, on this handle angle adjustment means 377, be formed with along the slotted hole 377a that fulcrum is the circumferencial direction at center that shakes with control crank 215.
On the installing hole 328c of handle connecting elements 328, be inserted with control crank 215 from oblique front upper place, so that the lateral surface butt of the stringer board of the medial surface of the handle angle adjustment means 377 of control crank 215 and handle connecting elements 328 part, and, the mode that is communicated with slotted hole 377a with the outside from handle angle adjustment means 377 is tightened in nut 328b with adjusting bolt, thus, the rearward end of the handle frame 213,214 about control crank 215 can being installed in.So, constitute the handle angle governor motion that the angle of the 215B of front and back support portion of control crank 215 can at random be regulated in given scope.
As shown in figure 49, by the adjusting bolt 378 about lax control crank 215 is fluctuated, the slotted hole 377a that is formed at handle angle adjustment means 377 moves along adjusting bolt 378, can be in the formed angular range of slotted hole 377a the angle of control crank 215 simply and be promptly changed adjusting corresponding to mode of operation etc.Thus, the physique etc. that can cater to the operator changes the angle of control crank 215 and carries out the rice transplanting operation, can improve the operability of control crank 215.
In addition, in this embodiment, the slotted hole 377a of handle angle adjustment means 377 is configured to, and compares the structure that handle angle regulated quantity upward is many with the state handle angle regulated quantity downwards of ground almost parallel from the control crank 215 shown in the solid line of Figure 49.
As shown in figure 50, by the adjusting bolt about installation or removal 378, can switch towards accommodating between the posture (posture of Figure 50) of hanging down downwards of the handle portion 215a of the use posture (posture shown in Figure 49) at rear and control crank 215 at the handle portion 215a of control crank 215.Thus, by in common rice transplanting operation, control crank 215 is switched to the use posture, and walk-behind type paddy-field work machine dispatch from the factory, transport and the keeping etc. the time, control crank 215 switched to accommodate posture, can shorten the front and back length of walk-behind type paddy-field work machine thus, can control crank 215 be contained in body 201 sides of travelling compactly.
When observing from the side, the installing hole 328c of handle connecting elements 328 is formed in the mode to the front upper place opening, therefore, can prevent the phenomenon that in accommodating posture control crank 215 comes off from the installing hole 328c of handle connecting elements 328.In addition, by the maintaining body (not shown) that is provided for keeping accommodating posture separately, can guarantee to operate can handle 215 handle portion 215a hang down downwards accommodate posture, control crank 215 rocks in can preventing to transport etc.
Control crank 215 is switched under the state of accommodating posture, and the operation utensil of position of shaking fulcrum of control crank 215 etc. being arranged to be installed on when observing from the side the oil pressure elevating lever 382 described later, accelerator rod 383 etc. of control crank 215 is positioned at the position forward, rear end than seedling carrying stand 218.Thus, accommodate posture by switching to, not only can compactly control crank 215 be contained in body 201 sides of travelling, the operation utensil that can also prevent to be installed on oil pressure elevating lever 382 described later on the control crank 215, accelerator rod 383 etc. takes place damaged in transportation.
In addition, when control crank 215 is being used posture and accommodating when switching between the posture, can the actuating cable transition ground of connecting line 264 and operating line 308 etc. is not crooked, therefore, can prevent the breakage of the actuating cable of connecting line 264 and operating line 308 etc.
As shown in figure 49, the downside at the 215a of left hand grip portion of control crank 215 is equipped with rice transplanting clutch lever 380.On rice transplanting clutch lever 380, the contact securing rod 380a that can fluctuate is installed, by this bar 380a that unlocks, rice transplanting clutch lever 380 shakes upward, and the state and the releasing rice transplanting clutch 256 that can keep rice transplanting clutch 256 to be handled to input side are thus handled to the maintenance of the state of input side.
Rice transplanting clutch lever 380 is connected on the motion arm 261 that is connected with above-mentioned control lever shaft 260 by operating line 264.Thus, when rice transplanting clutch 380 being held and operation upward with any finger beyond the left hand thumb of holding the 215a of left hand grip portion or with all fingers, so that rice transplanting clutch 380 is when shaking upward, connecting line 264 is pulled to the rear, thereby the operating line 261 that is connected with control lever shaft 240 rearward shakes, and the rice transplanting clutch is handled to input side.At this moment, automatically be saved (releasing) under the state that rice transplanting clutch 380 shakes up by the bar 380a that unlocks.
Under the state of operating upward holding rice transplanting clutch 380, the bar 380a state that shakes of the side of keeping down also owing to unlock, therefore, with any finger beyond the left hand thumb of holding the 215a of left hand grip portion or all fingers, hold unlock bar 380a and upward the operation, when bar 380a shook upward so that this unlocks, rice transplanting clutch 380 shook and removes held state upward.Thus, motion arm 261 shakes by back-moving spring 263, and rice transplanting clutch 256 is handled to cutting off side.
The downside of the 215a of right hand grip portion of control crank 215 is equipped with the clutch lever 381 that travels.Be expert at and sail on the clutch lever 381, the bar 381a that unlocks that can fluctuate is installed, by this bar 381a that unlocks, the clutch lever 381 that travels shakes upward, and the clutch 302 that can keep travelling is handled to the state that cuts off side (locking) and removed this hold mode.
The clutch lever 381 that travels is connected on the motion arm 306 that is connected with above-mentioned control lever shaft 305 by operating line.Thus, when with holding any finger or all fingers beyond the hand thumb of the 215a of right hand grip portion, hold travel clutch lever 381 and upward operation so that the clutch lever 381 that travels when shaking upward, connecting line is pulled to the rear, thereby the motion arm 306 that is connected with control lever shaft 305 rearward alkalescence shakes, and the clutch 302 that travels is handled to cutting off side.At this moment, under the state that shakes upward, automatically be carried out maintenance (locking) by the bar 381a that the unlocks clutch lever 381 that travels.
Holding under the state that travels clutch lever 381 and operate upward, the state that the bar 381a side of keeping down shakes unlocks, when with holding any finger beyond the hand thumb of the 215a of right hand grip portion or all fingers, hold unlocking lever 181a and operation upward, when bar 381a shakes upward so that this unlocks, the clutch lever 381 that travels shakes upward, removes maintained state.Thus, motion arm 306 shakes by spring 304, and the clutch 302 that travels is handled to input side.
Shown in Figure 49 and Figure 51, oil pressure elevating lever 382 (being equivalent to the hydraulic operation device) is installed at the preceding upper lateral part of the 215a of left hand grip portion of control crank 215.On oil pressure elevating lever 382, be supported with operating portion 382a in the mode of freely shaking to the left and right around the axle center of above-below direction, by with the left hand thumb of holding the 215a of left hand grip portion to the operating portion 382a operation that rocks from side to side, can be at down position, switch between lifting position and the neutral position, wherein, lifting position is meant the position that operating portion 382a shakes to the left, down position is meant the down position that operating portion 382a shakes to the right, and the neutral position is meant the left and right sides pars intermedia that is positioned at lifting position and down position and the operating portion 382a state along handle portion 215a.
Because oil pressure elevating lever 382 is installed near (the preceding upper lateral part) of the 215a of left hand grip portion of control crank 215 and the near position of operator's hand, therefore, even for example carrying out the rice transplanting operation, also can easily recognize the position of oil pressure elevating lever 382.Thus, when carrying out the rice transplanting operation, also easily carry out operation to oil pressure elevating lever 382.
Oil pressure elevating lever 382 is connected on the motion arm 369 of described bobbin 322 by connecting line 375.Thus, when operating portion 382a being shaken manipulation to the lifting position in left side with the left hand thumb of holding the 215a of left hand grip portion, connecting line 375 is pulled to the rear, and motion arm 369 is moved about is operated to the below, bobbin 322 is operated to lifting position, thereby lifting cylinder body 212 Duan Shrink, the body 201 of travelling rise (with reference to Figure 52).On the other hand, when using the left hand thumb of holding the 215a of left hand grip portion, operating portion 382a is shaken when being operated to the right side down position, motion arm 369 shakes operation upward by the active force of spring 373, bobbin 322 is operated to down position, thus, lifting cylinder body 212 elongations, body 201 declines (with reference to Figure 52) of travelling.
When using the left hand thumb of holding, operating portion 382a is shaken when operation from lifting position to the neutral position of central authorities, motion arm 369 shakes operation upward by spring 373 active forces, and bobbin 322 is operated to the neutral position, thereby lifting cylinder body 212 stops on the position that descends.In addition, when using the left hand thumb of holding the 215a of left hand grip portion, with operating portion 382a from down position shake be operated to central authorities the neutral position time, connecting line 375 is pulled to the rear and motion arm 369 shakes operation downwards, bobbin 322 is operated to the neutral position, therefore, lifting cylinder body 212 stops on the position of rising.
So, can beyond left-handed thumb, hold under the state of the 215a of left hand grip portion by finger, with left hand thumb manipulation oil pressure elevating lever 218, therefore, with the finger beyond the left hand thumb hold the 215a of left hand grip portion and the state of the stable body 201 that travels under, for example, in travel operation or rice transplanting operation, body 201 can lifting travels.Thus, for example compare, can work continuously, thus, can improve the operability of walk-behind type paddy-field work machine with the situation of stop to travel operation or rice transplanting operation (body 201 that travels is stopped) body 201 and lifting is travelled.
The preceding upper lateral part of the 215a of right hand grip portion of control crank 215 is equipped with accelerator rod 383.On accelerator rod 383, be supported with operating portion 383a in the mode of freely shaking to the left and right around the axle center of above-below direction, by operating portion 383a being shaken operation to the left and right, can make the revolution of engine E rise and descend with the hand thumb of holding the 215a of right hand grip portion.
Accelerator rod 383 is connected with described throttle arm (not shown) by connecting line 230.Thus, when using the hand thumb of holding the 215a of right hand grip portion, when operating portion 383a was shaken the high-speed side that is operated to the right side, connecting line 230 was pulled to the rear, and throttle arm is rearward shaken operation, thereby the revolution of engine E rises corresponding to the operational ton of accelerator rod 383.On the other hand, when using the hand thumb of holding the 215a of right hand grip portion, operating portion 383a shaken be operated to the left side during low speed side, throttle arm is forwards shaken operation by the active force of spring 229, thereby throttle arm is forwards shaken operation, and the revolution of engine E descends corresponding to the operational ton of accelerator rod 383.
So, can hold under the state of the 215a of right hand grip portion with the finger beyond the hand thumb, with hand thumb operation accelerator rod 383, therefore, can the finger beyond the right-handed thumb hold right handle portion 215a and the state of the stable body 201 that travels under, for example, can when travelling etc., be changed by the revolution to engine E.Thus, for example compare, can work continuously, thereby improve the operability of walk-behind type paddy-field work machine with the situation of the revolution of stop to travel operation or rice transplanting operation (stopping the body 201 that travels) and change engine E.
Promptly, oil pressure elevating lever 382 and accelerator rod 383 are set as described above, holding under the state of left and right sides handle portion 215a of control crank 215 with two, can enough two hands stable travelling because of one-wheel type is non-persistent easily body 201 time, can process oil press elevating lever 382 and the body 201 that travels that rises, and operation the accelerator rod 383 and revolution of engine E is changed.Thus, can work continuously, improve the operability of walk-behind type paddy-field work machine.
[first variation of present embodiment]
In the embodiment of above-mentioned invention, installation is as the example of the oil pressure elevating lever 382 of hydraulic operation device near the 215a of left hand grip portion that shows at control crank 215, but the 215a of right hand grip portion that also can adopt at control crank 215 near installation as the structure of the oil pressure elevating lever 382 of hydraulic operation device.At this moment, also can adopt and to have near the structure that the function operations bar (for example accelerator rod 383) different with oil pressure elevating lever 382 is installed in the 215a of left hand grip portion of control crank 215.
In the embodiment of above-mentioned invention, the preceding upper lateral part of the handle portion 215a that shows at control crank 215 is installed the example as the oil pressure elevating lever 382 of hydraulic operation device, but also can be provided with near the diverse location the handle portion 215a of control crank 215.Specifically, oil pressure elevating lever 382 as the hydraulic operation device for example can be installed on right side, left side or the bottom of the handle portion 215a front side of control crank 215.At this moment, also can adopt the structure of the enough thumbs of energy different finger manipulations in addition as the oil pressure elevating lever 382 of hydraulic operation device.
In the embodiment of above-mentioned invention, show as the hydraulic operation device, can oil pressure elevating lever 382 being installed around the mode that the axle center of above-below direction is shaken, the enough thumbs of energy shake the structure of operation to the left and right, but also can adopt as the hydraulic operation device can oil pressure elevating lever 382 being installed, and can be in the structure of operation that fluctuates around the mode that the axle center of left and right directions is shaken.At this moment, also can be the structure of the enough thumbs of energy different finger manipulation in addition as the oil pressure elevating lever 382 of hydraulic operation device.Specifically, for example with the oil pressure elevating lever 382 in the embodiment of foregoing invention with respect to control crank 215 to the right or the left side rotate 90 degree and the structure of installing.
In the embodiment of foregoing invention, show by 382 pairs of lifting cylinder body 212 of oil pressure elevating lever and stretched as the oil pressure device as the hydraulic operation device, thereby the structure that the body 201 that travels is carried out lifting, but also can be by near the hydraulic operation device the handle portion 215a that is installed in control crank 215, the structure of the different oil pressure device (not shown) of operation walk-behind type paddy-field work machine.Specifically, also can be by the structure of hydraulic operation device to being operated as the oil pressure actuated device of hydraulic motor (not shown) of oil pressure device etc.In addition, in the embodiment of foregoing invention, show the structure of carrying out mechanical operation by 382 pairs of bobbins of oil pressure elevating lever 322 as the hydraulic operation device, but also can be that lifting cylinder body 212 is connected on the oil pressure pump 234 by electromagnetic switching valve (not shown), electromagnetic switching valve be carried out the handover operation structure of electric by the hydraulic operation device.
In the embodiment of foregoing invention, show the example that constitutes the hydraulic operation device with oil pressure elevating lever 382, but can also adopt different mechanisms as the hydraulic operation device, for example, also can adopt the electric hydraulic operation device of (elbow formula, push button, scale disc types) such as the mechanical type hydraulic operation device of different institutions of handle type, scale disc type etc. or switches.
[second variation of present embodiment]
In first variation of the embodiment of foregoing invention and invention embodiment, show control crank 215 and can accommodate the example that posture between switch towards what the handle portion 215a of the use posture at rear and control crank 215 hung down downwards at control crank 215 handle portion 215a, but so long as the handle portion 215a of control crank 215 can be contained in than using posture to the position of front side, accommodating posture and also can adopt other posture then as control crank 215.
Specifically, also can be to switch to the structure of accommodating posture that the handle portion 215a of control crank 215 stands up upward, can also be to switch to the structure of accommodating posture of the handle portion 215a of control crank 215 towards the place ahead.At this moment, for example also can adopt the structure that is provided with maintaining body (not shown), described maintaining body be used for keeping foregoing invention embodiment control crank 215 upward or the place ahead shake the state of operation.
In addition, for example also can be, with the 215B of front and back support portion about control crank 215, be supported on the both ends, the left and right sides of the 215A of front carriage portion of control crank 215 in the mode of freely shaking to the left and right around the axle center of above-below direction, by with the 215B of front and back support portion about control crank 215 to the inside or the outside shake operation, switch to the structure of accommodating posture of the left and right sides handle portion 215a of control crank 215 towards the inboard, can also be switch to control crank 215 left and right sides handle portion 215a laterally or the structure of accommodating posture of front side.
In first variation of the embodiment of foregoing invention and invention embodiment, show the example that constitutes control crank 215 with the tubing of brake forming integratedly, but also can adopt the control crank (not shown) of left and right sides partition type.At this moment, for example also can adopt with about control crank respectively with up and down or about the mode of freely shaking be supported on the structure of the rearward end etc. of left and right sides handle frame 213,214.
[the 3rd variation of present embodiment]
In first variation and invention embodiment second variation of the embodiment of foregoing invention, invention embodiment, show the example that is used to operate as the gear lever 356 of the speed changing portion 236 of adjusting portion has been installed on support element 356, but so long as can bring into play same function, as being installed in the structure that action bars on the support element 356 can also adopt other.For example, also clutch lever (not shown) etc. can be installed on the support element 356.
In second variation of first variation of the embodiment of foregoing invention, invention embodiment and invention embodiment, show as governor motion and adopt seedling taking seedling amount governor motion 332 and hull height governor motion 345, adopt seedling taking seedling amount adjusting rod 342 and hull height adjusting rod 350 as adjusting rod, and at control lever shaft 339, the example of support element 330 is set near 346, but, also can adopt the structure that support element 330 is set near the control lever shaft of different governor motions so long as can bring into play same function.
[the 4th variation of present embodiment]
In the 3rd variation of second variation of first variation of the embodiment of foregoing invention, invention embodiment, invention embodiment and invention embodiment, show the structure that walk-behind type paddy-field work machine has the one-wheel type of a wheel 203, but can be applicable to equally in the walk-behind type paddy-field work machine with plural wheel 203, for example, can be applicable in the two-wheel walk-behind type paddy-field work machine equally.In addition, show,, but also can be equally applicable to the rice shoot rice transplanting that three row are above to the walk-behind type paddy-field work machine in rice field the example of two row rice shoot rice transplantings to the walk-behind type paddy-field work machine in rice field by seedling-transplanting device 208,209.
In addition, be not limited only to walk-behind type paddy-field work machine, also be equally applicable in the different walk-behind working machines, for example, be equally applicable in legged tree-remover or the walking type cultivating machine etc.

Claims (6)

1. walk-behind type paddy-field work machine, described walk-behind type paddy-field work machine has a running vehicle wheel, and has transplanting portion, this transplanting portion have two rice transplanting mechanisms arranging along cross-car, can be at the seedling carrying stand and the ground connection hull transversely freely back and forth transferred of car body, it is characterized in that
With described running vehicle wheel driving freely in addition supported wheel driving box of mode, with respect to a side of described running vehicle wheel deflection cross-car and be provided with;
The output of engine is passed to the gearbox body of described wheel drive case, with the gearbox portion in this gearbox body with respect to the described running vehicle wheel deflection cross-car side opposite and be provided with the residing side of described wheel drive case;
The driving force of described engine is passed to the rice shoot transverse feed mechanism that described seedling carrying stand is back and forth transferred transmission case the bottom be connected from the described gearbox body rearward end with described car body main support described wheel drive case the same side to the car body main support of the pair of right and left that the car body rear extension forms, thereby described transmission case is partial to the cross-car side identical with the residing side of described wheel drive case with respect to described running vehicle wheel and is provided with.
2. walk-behind type paddy-field work machine as claimed in claim 1 is characterized in that,
The operator that is used for described transplanting portion is provided with respect to the described running vehicle wheel deflection cross-car side identical with the residing side of described wheel drive case.
3. walk-behind type paddy-field work machine as claimed in claim 1 is characterized in that,
The car body fore-and-aft direction of pair of right and left towards the car body main support, the interval of car body main support on cross-car with this pair of right and left is then more little to car body main support front more, and car body main support front on cross-car, be positioned at ground connection hull and wheel lift valve interlinked mechanism the inboard configuration and be provided with.
4. walk-behind type paddy-field work machine as claimed in claim 3 is characterized in that,
The car body main support of described pair of right and left contains transmission device, and this transmission device is used for the output of described engine is passed to described transplanting portion.
5. walk-behind type paddy-field work machine as claimed in claim 1 is characterized in that,
Described gearbox body also is passed to described transplanting portion with the output of engine,
Travelling of described gearbox body is arranged on the car body fore-and-aft direction with output shaft with output shaft and transplanting portion.
6. as each described walk-behind type paddy-field work machine in the claim 1～5, it is characterized in that,
With a pair of support portion that described wheel drive case is supported in the mode of freely shaking up and down, decentralized configuration is arranged on the described gearbox body in the both lateral sides side of the input gear of described wheel drive case.
CN2008100907032A 2007-12-10 2008-03-31 Walk-behind type paddy-field work machine Active CN101455146B (en)

Applications Claiming Priority (6)

Application Number Priority Date Filing Date Title
JP2007318626A JP5221944B2 (en) 2007-12-10 2007-12-10 Walking rice transplanter
JP2007318626 2007-12-10
JP2007-318626 2007-12-10
JP2007321048 2007-12-12
JP2007321048A JP5192796B2 (en) 2007-12-12 2007-12-12 One-wheel walking rice transplanter
JP2007-321048 2007-12-12

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