CN101384467A - Working vehicle - Google Patents

Abstract

A ride-on rice-planting machine having an engine (5), a steering wheel body (15) provided behind the engine (5), and an operation panel body (10) for covering over the engine (5), wherein the presence of the operation panel body (10) over the engine (5) does not hinder maintenance of the upper part etc. of the engine (5). An upper shaft (41) of the steering wheel body (15) is constructed so that it can vertically pivot about a laterally placed tilt shaft (46) in a manner approaching and moving away from the operation panel body (10). The operation panel body (10) is constructed so that it can vertically pivot about a tubular shaft section (65) as a lateral support shaft installed in parallel with the tilt shaft (46) of a pivotable frame (61), and when the operation panel body (10) is pivoted, it is opened and closed in a manner approaching and moving away from the steering wheel body (15). The upper shaft (41) and the operation panel body (10) can pivot independently from each other.

Description

Working truck

Technical field

The special operation such as field machine, wheel type loader that the present invention relates to rice transplanter, trac. etc. is with the such working truck of vehicle.

Background technology

Before, as the ride-type rice transplanter of one of working truck example, have lift-launch at the driving engine of the front part of a body that travels be configured in the body that turns at this driving engine rear.In order to make driving engine and to turn to (especially driving engine) maintenance activity of steering-wheel spindle of body easy, adopt several alienable closure assemblies to be covered with more.

Patent documentation 1 has disclosed an example of ride-type rice transplanter, in this rice transplanter, closure assembly is divided into operation plate body, the anterior cover body of covering engine front portion and three parts of rear portion cover body of covering engine rear portion and steering-wheel spindle of covering engine top.

In the ride-type rice transplanter of patent documentation 1 record, above-mentioned anterior cover body and rear portion cover body releasably are installed on the body that travels, and the operation plate body is fixed on the steering-wheel spindle.When carrying out the maintenance activity of driving engine, cover body before and after these be unloaded, make driving engine around (all around) expose.

Patent documentation 1: Japanese kokai publication hei 10-210816 communique

Summary of the invention

But, in above-mentioned structure before, because the operating panel body and function is some to be bolted on the steering-wheel spindle, the top of driving engine is operated plate body and is covered with, so, on the top of wanting service engine or when being positioned at the device class (for example, airfilter etc.) at this position, the obstacle the when existence of operation plate body becomes maintenance.In addition, even the operation plate body is unloaded, some bolts be turned on also pretty troublesome.That is, in the structure of above-mentioned patent documentation 1, the maintenance activity of the device class at the top of driving engine, this position is very inconvenient or difficult.

In addition, on the operation plate body, be provided with the display panel of the various information that show relevant ride-type rice transplanter more.At this moment, the rear side (top of driving engine) at the operation plate body is disposing display panel used control box.

But in the above-mentioned structure before, control box is between the operation plate body and driving engine that are fixed by bolts on the steering-wheel spindle, so, when making the ride-type rice transplanter, on the control box operation of connection wirning harness difficult, exist the problem of operation difference.

For this reason, technical task of the present invention provides the working truck that can solve above-mentioned whole issue.

In order to solve above-mentioned problem, the working truck of technical scheme 1 record, have lift-launch at the propulsion source of front part of a body that travels, be configured in turning to body, covering the operation plate body of at least a portion above the above-mentioned propulsion source of this propulsion source rear; The above-mentioned body that turns to is the center with horizontal tilting axis, can connect liftoff rotation up and down with the aforesaid operations plate body; The aforesaid operations plate body is the center with the horizontal fulcrum with coaxial shape of above-mentioned tilting axis or parallel shape, can connect the liftoff rotation that opens and closes up and down with the above-mentioned body that turns to; Above-mentioned body and the aforesaid operations plate body of turning to can be distinguished independently and rotate.

The invention of technical scheme 2, in the working truck of technical scheme 1 record, it is characterized in that, be positioned at the rearward end of the upper shelf of above-mentioned propulsion source top, by above-mentioned horizontal fulcrum, the rotatable earth's axis is bearing in the above-mentioned body that travels, upright being located on the support unit at above-mentioned propulsion source rear; The leading section of above-mentioned upper shelf releasably is connected with the above-mentioned body that travels; The aforesaid operations plate body is installed on the above-mentioned upper shelf.

The invention of technical scheme 3, in the working truck of technical scheme 2 records, it is characterized in that, operate the control lever mechanism of the above-mentioned body action of travelling, stretch out from facing outward of aforesaid operations plate body, the base end part of this control lever mechanism is installed on the above-mentioned upper shelf and also can rotates integratedly with above-mentioned upper shelf.

The invention of technical scheme 4 in the working truck of technical scheme 2 or 3 records, is characterized in that, in the front portion of the above-mentioned body that travels, the anterior cover body and the rear portion cover body that surround above-mentioned propulsion source and aforesaid operations plate body from front and back is installed releasably respectively; The leading section of above-mentioned upper shelf, releasably with the above-mentioned body that travels in, the upright auxiliary frame that is located at above-mentioned propulsion source the place ahead is connected, under the state that is unloading above-mentioned anterior cover, the leading section of above-mentioned upper shelf is exposed to the place ahead of operating plate body.

The invention effect

In the structure that technical scheme 1 is put down in writing, be configured in the body that turns at propulsion source rear, be the center with horizontal tilting axis, can connect liftoff rotation up and down with the operation plate body of at least a portion that covers the propulsion source top; The aforesaid operations plate body is the center with the horizontal fulcrum with coaxial shape of above-mentioned tilting axis or parallel shape, can connect the liftoff rotation that opens and closes up and down with the above-mentioned body that turns to; Above-mentioned body and the aforesaid operations plate body of turning to can be distinguished rotation independently.

According to this structure, make the above-mentioned body that turns to after the reversing downwards of above-mentioned tilting axis, as long as the aforesaid operations plate body is opened rotation up around above-mentioned horizontal fulcrum, this operation plate body just can leave above-mentioned propulsion source above, at the aforesaid operations plate body and between above the above-mentioned propulsion source, opened the enough big space that hand can put in.

Therefore, to the top of above-mentioned propulsion source, when keeping in repair, the existence of aforesaid operations plate body does not become the obstacle of maintenance to be positioned at the device class (for example airfilter etc.) at this position.In addition, when maintenance, also needn't as before, the aforesaid operations plate body to be unloaded, save this and unloaded the trouble of operation.Therefore, to the top of above-mentioned propulsion source, be positioned at this position the maintenance activity of device class easy.

In addition, because at the aforesaid operations plate body and between above the above-mentioned propulsion source, opened the enough big space that hand can put in, so, for example when control box is configured in the rear side (top of above-mentioned propulsion source) of aforesaid operations plate body, can easily carry out connecting the operation of wirning harness, improve the assembleability of working truck toward above-mentioned control box.

In the structure of technical scheme 2 record, be positioned at the rearward end of the upper shelf of above-mentioned propulsion source top, via above-mentioned horizontal fulcrum in the above-mentioned body that travels, upright being located on the support unit at position, above-mentioned propulsion source rear of axle bearing rotationally; The leading section of above-mentioned upper shelf releasably is connected with the above-mentioned body that travels; The aforesaid operations plate body is installed on the above-mentioned upper shelf.

According to this structure, owing to the center of turn of above-mentioned upper shelf, be above-mentioned horizontal fulcrum, be positioned at the rear end side of above-mentioned upper shelf, promptly near an above-mentioned side that turns to body, so, with above-mentioned upper shelf and aforesaid operations plate body when above-mentioned horizontal fulcrum upwards rotates openly, the space that is formed between aforesaid operations plate body and above-mentioned propulsion source top is open forward.

Therefore, the operator can be from the front side of the body that travels, and the top of above-mentioned propulsion source, the device class that is positioned at this position are keeped in repair.Therefore,, above-mentionedly turn to the existence of body not become obstacle, can improve operating efficiency in when maintenance.

In the structure of technical scheme 3 records, operate the control lever mechanism of the above-mentioned body action of travelling, stretch out from facing outward of aforesaid operations plate body, the base end part of this control lever mechanism is installed on the above-mentioned upper shelf, can rotates integratedly with above-mentioned upper shelf.So, rotating interlock with the switching up and down of above-mentioned upper shelf and aforesaid operations plate body, the aforesaid operations linkage is that center of turn rotates linkedly with above-mentioned horizontal fulcrum also.

Therefore, when making above-mentioned upper shelf and aforesaid operations plate body open and close rotation up and down, will not unload by the aforesaid operations linkage, its existence also has no relations.Therefore, the rotating operation of switching up and down of above-mentioned upper shelf and aforesaid operations plate body is easy, and the device class that in this regard, also can improve top to above-mentioned propulsion source, is positioned at this position is carried out the efficient of maintenance activity.

In the structure of technical scheme 4 records,, the anterior cover body and the rear portion cover body that surround above-mentioned propulsion source and aforesaid operations plate from front and back are installed releasably respectively in the front portion of the above-mentioned body that travels; The leading section of above-mentioned upper shelf, releasably with the above-mentioned body that travels in, the upright auxiliary frame that is located at above-mentioned propulsion source the place ahead is connected, at the state that has unloaded above-mentioned anterior cover body, the leading section of above-mentioned upper shelf exposes from the place ahead of aforesaid operations plate body.So, the operator pinch above-mentioned upper shelf leading section, carry out the rotating operation of switching up and down of above-mentioned upper shelf and aforesaid operations plate body.That is, the leading section of above-mentioned upper shelf also has concurrently as the function that opens and closes the handle that rotating operation uses up and down.So, even without the grip member of special use, also can easily carry out the rotating operation of switching up and down of above-mentioned upper shelf and aforesaid operations plate body, can reduce component number.

Description of drawings

Fig. 1 is the lateral plan as the ride-type rice transplanter of working truck.

Fig. 2 is the birds-eye view of ride-type paddy rice seedling machine.

Fig. 3 is the birds-eye view of front part of a body of travelling.

Fig. 4 has omitted birds-eye view under the state of cover body, that travel front part of a body.

Fig. 5 is with decomposition side view under the upwards open state that rotates of upper shelf, that travel front part of a body.

Fig. 6 from oblique rear, turn to the block diagram of body.

Fig. 7 from oblique the place ahead, turn to the block diagram of body and upper shelf.

Fig. 8 is block diagram that see, upper shelf from oblique rear.

Fig. 9 is the lateral plan of front part of a body of travelling.

Figure 10 is with lateral plan under the upwards open state that rotates of upper shelf, that travel front part of a body.

Figure 11 is the exploded perspective view of operation plate body, driving engine cover body and Steering gear cover body.

Figure 12 is the right side view of front part of a body of travelling.

Figure 13 is the right side view of gear shift pedal and brake pedal.

Figure 14 is from the block diagram of oblique the place ahead, gear shift pedal and brake pedal.

Figure 15 is the Action Specification figure of speed of a motor vehicle adjust bar.

Figure 16 is the Action Specification figure of gear shift pedal.

Figure 17 is the Action Specification figure of brake pedal.

The specific embodiment

Below, with reference to the accompanying drawing (explanation of Fig. 1～Figure 17) embodiments of the present invention.Fig. 1 is the lateral plan as the ride-type rice transplanter of working truck, Fig. 2 is the birds-eye view of ride-type paddy rice seedling machine, Fig. 3 is the birds-eye view of front part of a body of travelling, Fig. 4 has omitted under the state of cover body, the birds-eye view of front part of a body travels, Fig. 5 upwards opens upper shelf under the state that rotates, the decomposition side view of front part of a body travels, Fig. 6 is from oblique rear, turn to the block diagram of body, Fig. 7 is from oblique the place ahead, turn to the block diagram of body and upper shelf, Fig. 8 sees from oblique rear, the block diagram of upper shelf, Fig. 9 is the left side view of front part of a body of travelling, Figure 10 upwards opens upper shelf under the state that rotates, the lateral plan of front part of a body travels, Figure 11 is the operation plate body, the driving engine cover body, exploded perspective view with the Steering gear cover body, Figure 12 is the right side view of front part of a body of travelling, Figure 13 is the right side view of gear shift pedal and brake pedal, Figure 14 is from oblique the place ahead, the block diagram of gear shift pedal and brake pedal, Figure 15 is the Action Specification figure of speed of a motor vehicle adjust bar, Figure 16 is the Action Specification figure of gear shift pedal, Figure 17 is the Action Specification figure of brake pedal

(1) summary of rice transplanter

At first, mainly with reference to the summary of Fig. 1～Fig. 4 explanation as the ride-type rice transplanter of working truck.

As Fig. 1～shown in Figure 4, the body 1 that travels of the ride-type rice transplanter in the embodiment has body frame 2, and this body frame 2 is being supported by the left and right sides front-wheel 3 and the left and right sides trailing wheel 4 that are configured in before and after its left and right sides.

Carrying driving engine 5 as propulsion source in the front portion of the body 1 that travels.On driving engine 5, disposing airfilter 31 (with reference to Fig. 5).In the rear lower portion of driving engine 5, disposing and have Hyaulic infinite variable speed machine 170 (referring to the change speed gear box 6 of Fig. 5 and Figure 12～Figure 14) etc.Change speed gear box 6 is from the power of driving engine 5 suitably after the speed change, four-wheel 3,4 before and after the speed-change gear that does not show by figure is delivered to.

Foreign side is outstanding to the left and right from the left and right sides sidepiece of change speed gear box 6 for front truck axle housing 7, and front-wheel 3 can be installed in the both ends of this front truck axle housing 7 with turning to.On the tubular frame 8 that rearward stretches out from change speed gear box 6, fixing back axle shell 9, in the left and right sides of back axle shell 9 trailing wheel 4 is installed.

The top of body frame 2 is covered with by some cover bodies, and each cover body can load and unload respectively.For example, the periphery of driving engine 5, the operation plate body 10, driving engine cover body 11 and the Steering gear cover body 12 that are used as the front engine cover surround from top and front and back, can load and unload (see figure 5) respectively.The anterior cover body that the driving engine cover body is equivalent to put down in writing in the technical scheme, the rear portion cover body that the Steering gear cover body is equivalent to put down in writing in the technical scheme.

In addition, lower end periphery in the top front portion of body frame 2, driving engine cover body 11 and Steering gear cover body 12 is seen on the plane that the forebody cover body 13 that roughly is square shape is covered with.The top rear portion of body frame 2 is covered with by rear body cover body 14, and this rear body cover body 14 forms and the continuous form in the rear end of forebody cover body 13.

On change speed gear box 6, upright establishing is used for the travel tilting of body 1 of steering operation and turns to body 15.Turn to front end (upper end) side the past car bonnet of body 15 to protrude upward, tumbler disc 43 is installed at its front end.

On rear body cover body 14 and turn to the position at body 15 rears, operator's saddle 17 is being set by Carrier for cycle 16.When being sitting in the operator's rotating operation tumbler disc 43 on the operator's saddle 17, with its operational ton (amount of spin) correspondingly, about the rudder angle (steering angle) of two front-wheels 3 change.

Be used for suitably regulating the travel brake pedal 19 of body 1 of the gear shift pedal 18 of the speed of a motor vehicle of body 1 and brake operating that travels, stretch out (referring to Fig. 2 and Fig. 3) upward from (gap) between the front-end edge of the end edge of forebody cover body 13 and rear body cover body 14.Gear shift pedal 18 in the embodiment and brake pedal 19 clip and turn to body 15 ground to be configured in the direct of travel right side of the body 1 that travels.In addition, the left and right sides of mmi machine body cover body 13 is provided with the preliminary seedling mounting table 20 that is used for several preliminary seedling pads of mounting.

A side about operation plate body 10 clips and turns to body 15 ground disposing the travel main gear-shift lever 21 of the advancing, stop, retreating of body 1 and the speed of a motor vehicle thereof of alter operation.At the opposite side of operation plate body 10, disposing the rotating speed that is used to regulate driving engine 5 accelerator rod 22, can carry out the gear-shift lever 24 (seeing Fig. 3 and Fig. 4) that the speed of a motor vehicle is regulated operation and the speed of a motor vehicle adjust bar 23 of the such two kinds of operations of automatic mobility operation, the descending operation that carries out seedling-transplanting device 25 described later and the operation of power teasel root etc.These bars 21～24 all are equivalent to the control lever mechanism that puts down in writing in the technical scheme.

Article 6, the seedling-transplanting device 25 used of rice transplanting, by the parallel linkage 26 that is made of upper and lower strut, liftable is connected the rearward end of body frame 2 with regulating.The structure of seedling-transplanting device 25 is known before.That is, seedling-transplanting device 25 have 3 groups of transmission gearboxs 27 of the transmission of power of accepting change speed gear box 6, the rotary rice transplanting mechanism 28 that is installed in these transmission gearbox 27 left and right sides, above termination closely travel the forward lean of body 1 be installed in transmission gearbox 27 top seedling carrying base 29, be configured in smooth field below the transmission gearbox 27 with hull 30.

(2) turn to the structure of body

Below, turn to the structure of body with reference to Fig. 5～Figure 10 explanation.

Turn to body 15 to have: on change speed gear box 6 the upwards prominent steering handwheel lower shaft of establishing 40, be connected axle 41 on the steering handwheel of steering handwheel lower shaft 40 upper ends by universal coupling 42 and be installed in the tumbler disc 43 of axle 41 upper ends on the steering handwheel.

The periphery of steering handwheel lower shaft 40, be fixed on change speed gear box 6 outsides, turn to column casing 44 to surround as the bottom of support unit, this steering handwheel lower shaft 40 can only rotate the earth's axis and be bearing in the bottom and turn on the column casing 44.

Axle 41 turns to column casing 45 with the top that is embedded in its periphery outward on the steering handwheel, can be the center with the left and right sides lateral inclination axle 46 in the universal coupling 42, rotates (tilting to rotate) (referring to Fig. 5 and Figure 10) towards upper and lower to bending.

Axle 41 can only rotate the earth's axis and is bearing in top and turns on the column casing 45 on the steering handwheel.Turn to the bottom of column casing 45 on top, be provided with posture regulating mechanism 47, this posture regulating mechanism 47 is used for turning to this top the angle of bend (angle of inclination) of axle 41 on column casing 45 and the steering handwheel to be adjusted to some levels (with reference to Fig. 6).

Posture regulating mechanism 47 has the inclination dwang 48 and the fastening plate 49 of rotary type.Inclination dwang 48 is installed in section for extending on the analog bracket 53 of コ font up and rearward, this analog bracket 53 be located at the bottom turn to the upper end of column casing 44 and forward oblique upper stretch out.Fastening plate 49 is located at the bottom, side that top turns to column casing 45, and is relative with the length direction middle part of inclination dwang 48 from the below.

The base end part of inclination dwang 48 is installed on the analog bracket 53 up and down by horizontal pivot fulcrum 50 rotating operation.At the length direction middle part of inclination dwang 48, fixing hook-shaped clamping hooked 51 down.On the other hand, in the upper surface of fastening plate 49,, several fastening grooves 52 have been formed with appropriate intervals along being the rotation direction at center with tilting axis 46.

When making top turn to the angle of bend (angle of inclination) of axle 41 crooked rotation regulations on column casing 45 and the steering handwheel, the clamping hooked 51 of inclination dwang 48 optionally engages with in several fastening grooves 52 any one, like this, top turns to the inclination attitude of axle 41 on column casing 45 and the steering handwheel to be regulated and maintain by the classification change.

Inclination dwang 48, the direction pushing that the spring members of being schemed not show engages with the fastening groove 52 of fastening plate 49 towards clamping hooked 51 always.The free end of inclination dwang 48 (leading section) stretches out from Steering gear cover body 12 outside (backward).

(3) cover body and supporting construction thereof

Below, mainly with reference to Fig. 3～Figure 11, the cover body and the supporting construction thereof that are positioned at the driving engine periphery are described.

The operation plate body 10 of covering engine 5 tops, from the plane is roughly elliptoid form, be installed on the upper shelf 60 (being described in detail later) that is positioned at driving engine 5 tops, and turn to the length direction middle part of column casing 45 outstanding from top towards the place ahead of the body that travels.On operation plate body 10, disposing display part 10b, key swich etc.In the rear side of display part 10b, the control box 117 that is provided with demonstration control of carrying out this display part 10b etc. is (referring to Fig. 9～Figure 11).

Steering gear cover body 12 is circular arc roughly from the plane, surrounds operation plate body 10 and top from the rear and turns to column casing 45.The left and right sides front-end edge 12a of Steering gear cover body 12 forms towards oblique front lower place bevelled skewed, and superimposed tightly with the left and right sides end edge 11a of driving engine cover body 11.

The following ora terminalis 12b of Steering gear cover body 12 forms that slowly bevelled is skewed towards oblique back upper place, and superimposed tightly with the top edge 13a of preceding lower cover 13.On this time ora terminalis 12b, at some positions, be extruded with tongue piece 82 (referring to Fig. 5 and Figure 11) down integratedly, this each tongue piece 82 from the top be fitted to be formed at forebody cover body 13 above in the embedded hole 83 (referring to Fig. 4) of edge 13a.

In addition, the last ora terminalis of Steering gear cover body 12, with the operation plate body 10 following ora terminalis in rearward end and end, the left and right sides join tightly.The front end hook portion of the pair of right and left coil spring 84 on the plate 72 that is installed in aftermentioned side arm 62, hang on the fastening carriage 58 that is formed at Steering gear cover body 12 inner faces, like this, the last ora terminalis of steering column cover body 12 is close to the following ora terminalis of operation plate body 10, whole steering column cover 12 is not pushed (referring to Fig. 9) forward with not rocking.

On the rear portion of operation plate body 10 and the top of Steering gear cover body 12, be formed with and allow that top turns to axle 41 rotates up and down on column casing 45 and the steering handwheel breach groove 10a, 12c (seeing Figure 11).Under the state that operation plate body 10 and Steering gear cover body 12 are installed, both 10a, 12c dock, become the slotted hole of above-below direction, top turns on column casing 45 and the steering handwheel axle 41, along this breach groove 10a, 12c (slotted hole) rotates up and down and with operate plate body 10 connect from.

As Fig. 2, Fig. 3, shown in Figure 11, driving engine cover body 11 is more towards the thin more streamline contour of front end (oval shelly), the left and right sides end edge 11a of driving engine cover body 11, form towards oblique back upper place bevelled skewed, from the past more top of downside more towards the rear of body frame 2.On the end edge 11a of this left and right sides, being formed with several outstanding towards the rear guiding tongue pieces 79 (is each 2 up and down in the embodiment, referring to Fig. 5 and Figure 11), when driving engine cover body 11 was installed, these guiding tongue pieces 79 entered inner face side from the left and right sides front-end edge 12a of Steering gear cover body 12.

The following ora terminalis 11b of driving engine cover body 11, form towards oblique back upper place light grade bevelled skewed, and, slip with light grade ground edge 13a above the bevelled of oblique back upper place in the forebody cover 13.Forward position in this time ora terminalis 11a, the prominent integratedly fastening tongue piece of establishing down 80 (referring to Fig. 5 and Figure 11), this engages tongue piece 80, is fitted in the connecting hole 81 (referring to Fig. 4) from the top, and described connecting hole 81 is formed on the front end position of edge 13a in the forebody cover body 13, top.

From the upper shelf 60 of below supporting operation plate body 10, the side arm 62 of U font constitutes by being seen as roughly on turret 61 that is seen as E font roughly on the plane and the plane.In embodiment, the front end of two arms 71 about the extension backwards in the side arm 62, the front of the horizon bar 63 of bolt together in turret 61.The front and back length dimension of side arm 62, the degree that the leading section that is set at this side arm 62 forwards stretches out, stretches out greatly from operation plate body 10 during from the plane than the front end of operation plate body 10.

The mutual side arm 64 that extends in parallel in the same direction, stretch out at the position by two ends of the horizon bar 63 from turret 61, external part in this two side arms 64 is provided with tubular axial region 65, and this tubular axial region 65 is as be the horizontal fulcrum that concentric shape ground connects mutually at left and right directions.

On the other hand, turn to the front upper of column casing 44 in the bottom, fixing carrier frame plate 66 by welding etc., on this carrier frame plate 66, fixing the wing arm 67 of pair of right and left that foreign side to the left and right stretches out,, left and right directions is being installed is the pivot that concentric shape connects mutually and props up propeller boss 68 at the front end of each wing arm 67.

The tubular axial region 65 of each side arm 64 in the turret 61, from about the outside insert the pivot be installed in cooresponding wing arm 67 rotationally and prop up on the shaft hub 68 with it.Like this, turret 61, upper shelf 60 and operation plate body 10 can open and close rotation up and down around the tubular axial region 65 on the same axis that extends in parallel with tilting axis 46.

At this moment, upper shelf 60 and operation plate body 10, turn to axle 41 on column casing 45 and the steering handwheel, can distinguish independently and rotate with top.At upper shelf 60 and operation plate body 10 when tubular axial region 65 rotates up and down, upper shelf 60 and operation plate body 10 near or away from turning to body 15 (top turns to column casing 45, tumbler disc 43).But, when top turns on column casing 45 and the steering handwheel axle 41 for towards oblique back upper place bevelled posture (posture during steering operation) time, because of top turns on column casing 45 and the steering handwheel existence of axle 41, the upwards opening operation of upper shelf 60 and operation plate body 10 is restricted.

In embodiment, tubular axial region 65 as center of turn, be positioned at the rear end side of upper shelf 60, promptly near turning to a side of body 15, so, when upper shelf 60 is upwards opened rotation with operation plate body 10, at operation plate body 10 and between above the driving engine 5, formed open space (referring to Fig. 5 and Figure 10) forward.

In addition, from main gear-shift lever 21 bottoms towards about the transverse axis 93 that laterally stretches out, insert rotationally and be installed in the tubular axial region 65 of side's side arm 64.The horizontal shaft 114 of adapting rod 113 inserts in the tubular axial region 65 that is installed in the opposing party's side arm 64 (referring to Fig. 8) rotationally.This adapting rod 113 is speed change inscapes with interlinked mechanism 112, and above-mentioned speed change is connected with gear-shift lever 24 linkedly with the lifting mechanism and the power teasel root mechanism of interlinked mechanism 112 with seedling-transplanting device 25.

The length direction pars intermedia of the horizon bar 63 in turret 61 is installed with the center arm 69 that stretches out in the same direction with left and right sides arm 64.This center arm 69, from the top be located at the bottom turn to column casing 44 upper ends, section is chimeric removably for the analog bracket 53 of コ font up.That is, center arm 69 turns to the analog bracket 53 of column casing 44 sides supporting from the below by the bottom.

As Fig. 4 and shown in Figure 9, be positioned at the connecting arm 70 of front in the side arm 62, releasably be connected from the front with bolt and nut and be seen as on the auxiliary frame 54 of reverse U shape these auxiliary frame 54 upright the place aheads that are located at the driving engine 5 in the body frame 2.Therefore, upper shelf 60 is being closed around tubular axial region 65 under the state that has rotated, the front-back of driving engine 5 and above, turned to column casing 44 to surround by auxiliary frame 54, upper shelf 60 and bottom.

Fixing plate 72 respectively on two arms 71 about side arm 62, the strut 73 of about being installed with between this plate 72, growing crosswise, the existence of this strut 73 has improved the rigidity of side arm 62.On strut 73, disposing fuse block 74.Certainly, the top of fuse block 74 is operated plate body 10 and is covered with.

About between the plate 72 in two arms 71, the kayser axle 75 of growing crosswise about also setting up, this kayser axle 75 can rotate around its lateral axis.On both ends kayser axle 75, that slave plate 72 stretches out towards left and right sides foreign side, fixing hook-shaped claw 76 forward.In the middle of the length direction of kayser axle 75, be provided with locking bar 77, this locking bar 77 stretches out towards the last direction of intersecting with kayser axle 75.

When pair of right and left claw 76 rotated around kayser axle 75 front and back, (referring to Fig. 8 and Figure 10) engaged or engagement release with engagement pin 56.This engagement pin 56, from the carrier frame plate 55 that is located at driving engine cover body 11 inner faces towards about cross out.Between claw 76 and plate 72, torsion spring 78 is installed, the elastic force of this torsion spring 78, always with claw 76 towards can directions pushing 56 that engage with the engagement pin of driving engine cover body 11 sides, that rotate forward.

When claw 76 was engaging with the engagement pin 56 of driving engine cover body 11 sides, the driving engine cover body was 11 locked, can not extract forward.When wanting unloaded engine cover body 11, utilize the rotating operation forward of locking bar 77, claw 76 is rotated backwards around kayser axle 75, like this, just can remove the engaging of engagement pin 56 (locking) of claw 76 and driving engine cover body 11 sides.

In addition, front portion on operation plate body 10 is provided with the lid 57 that can open and close rotation around rearward end up and down, and in the time manually should covering 57 rotating opening, locking bar 77 exposes.

(4) structure of control lever mechanism

Below, with reference to Fig. 4 and Fig. 6～Figure 10, illustrate from the structure of the control lever mechanism that facing outward of operation plate body stretched out.

The base end part of each the control lever mechanism in the embodiment all is installed on the upper shelf 60, and can rotate integratedly around tubular axial region 65 with upper shelf 60 and operation plate body 10.

That is, in the control lever mechanism, be positioned at the main gear-shift lever 21 that turns to body about 15 one sides, have the shaft hub 90 that fore-and-aft direction connects at its bottom (base end part), this shaft hub 90 is configured in the box-shaped carriage 91 of upper and lower opening (referring to Fig. 7 and Fig. 8).The bearing pin 92 that extend front and back runs through the propeller boss 90 and the box-shaped carriage 91 of main gear-shift lever 21.Therefore, main gear-shift lever 21 can be around bearing pin 92 left-right rotation.

As shown in Figure 8, in a side of box-shaped carriage 91, about the laterally prominent transverse axis 93 of establishing.Transverse axis 93 from about the outside insert rotationally and be installed in the tubular axial region 65 of the side's side arm 64 the turret 61.Therefore, box-shaped carriage 91 and main gear-shift lever 21 can rotate around transverse axis 93 front and back.Therefore, in the present embodiment, main gear-shift lever 21 can rotate by fore-and-aft direction, also can rotate by left and right directions.The transverse axis 93 of box-shaped carriage 91 by the speed change interlinked mechanism 94 of connecting rod, steel wire etc., is connected linkedly with gear type speed-changing mechanism (figure does not show), and the transmission of power of the hydrostatic formula stepless speed changer in the change speed gear box 6 is to this gear type speed-changing mechanism.

Be fixed on the speed change guide plate 95 of an end of the horizon bar 63 in the turret 61, be positioned at the top of box-shaped carriage 91, main gear-shift lever 21 connects guide groove 96, reaches the outside of operation plate body 10, and this guide groove 96 is formed on the speed change guide plate 95.Therefore, main gear-shift lever 21 can be along the guide groove 96 of speed change guide plate 95 rotating operation all around.Because the existence of this guide groove 96, the slewing area of main gear-shift lever 21 is restricted.

As shown in Figure 8, accelerator rod 22 for 3 bars 22～24 that are arranged in another side, the left and right sides that turns to body 15, be fixed on the rotor plate 97 of its bottom (base end part), can be on horizontal bearing pin 99 front and back be installed in up carriage 98 (referring to Fig. 6 and Fig. 8) rotationally, this carriage 98 is fixed on the tubular axial region 65 of another side arm 64 in the turret 61.The rotor plate 97 of accelerator rod 22, the acceleration by steel wire etc. be with interlinked mechanism 100, is connected linkedly with control stalk (scheming not show) with speed setting on being located at driving engine 5.

In embodiment, along with will speed up front side (rear side) the hypsokinesis operation of bar 22 from front side toward the operator, the rotating speed of driving engine 5 becomes high rotating speed from slow speed of revolution.

The other end of horizon bar 63 in turret 61, the speed change carriage 101 by protruding upward from this horizon bar 63 is installed with rod guidance corbel back slab 102.Accelerator rod 22 runs through acceleration with guide groove 103 (referring to Fig. 7 and Fig. 8), reaches the outside of operating plate body 10, and described acceleration is formed on the rod guidance corbel back slab 102 with guide groove 103.Therefore, accelerator rod 22 can be along the acceleration of rod guidance corbel back slab 102 with guide groove 103 towards front and back to rotating operation.Because this quickens the existence with guide groove 103, the slewing area of accelerator rod 22 is restricted.

Gear-shift lever 24 has the shaft hub 108 that roughly vertically connects at its bottom (base end part), and it is accepting in the carriage 109 of コ font that 108 ones of this propeller boss are configured in section.Roughly bearing pin 110 connects the shaft hub 108 of gear-shift lever 24 and accepts carriage 109 (referring to Fig. 7 and Fig. 8) longitudinally, and gear-shift lever 24 can be around bearing pin 110 left-right rotation.

Accept carriage 109, by the speed change from horizon bar 63 with carriage 101 sides towards about the introversive propeller boss axle 111 (referring to Fig. 6, Fig. 8, Fig. 9) that stretches out, by can around this propeller boss axle 111 rotationally pivot propping up.Therefore, gear-shift lever 24 and main shift lever 21 similarly can all around rotate.Accept the speed change interlinked mechanism 112 of carriage 109, be connected linkedly with the lifting mechanism and the power teasel root mechanism (figure does not show) of seedling-transplanting device 25 by connecting rod, steel wire etc.

Gear-shift lever 24 and accelerator rod 22 similarly connect speed change with guide groove 115 (referring to Fig. 4, Fig. 7 and Fig. 8), reach the outside of operating plate body 10, and described speed change is formed on the rod guidance corbel back slab 102 with guide groove 115.Therefore, gear-shift lever 24 can be along the speed change of rod guidance corbel back slab 102 guide groove 115 rotating operation all around.Because the existence of guide groove 115 of this speed change, the slewing area of gear-shift lever 24 also is restricted.

Speed of a motor vehicle adjust bar 23 can be carried out two kinds of operations: a kind of operation is, with the speed change output increase and decrease speed of Hyaulic infinite variable speed machine 170; Another kind of operation is that the speed change of Hyaulic infinite variable speed machine 170 is exported the cooresponding value of pedal position (position of entering into) that remains with gear shift pedal 18.That is, speed of a motor vehicle adjust bar 23 can be carried out the such two kinds of operations of automatic mobility operation of regulating operation with the speed of a motor vehicle of the same body 1 that travels of gear shift pedal 18 and making body 1 constant-speed traveling that travels.The speed of a motor vehicle adjust bar 23 of embodiment from the plane, is configured in a side (the direct of travel right side of travel body 1) identical with gear shift pedal 18 that clips in the left and right sides that turns to body 15.

The speed of a motor vehicle adjust bar 23 of embodiment, have the shaft hub 104 that left and right directions connects at its bottom (base end part), this shaft hub 104 is outer rotationally to be embedded in the bearing pin portion of U font fulcrum 105 (referring to Fig. 6 and Fig. 8), this U font fulcrum 105 be fixed on another side arm 64 in the turret 61 above.Therefore, speed of a motor vehicle adjust bar 23 also with accelerator rod 22 similarly, can before and after the bearing pin portion of U font fulcrum 105, rotate.

The position of the shaft hub 104 in speed of a motor vehicle adjust bar 23 has the position holding member 120 (referring to Fig. 7) that speed of a motor vehicle adjust bar 23 is remained on any operating position.In embodiment, the root side of the bearing pin in U font fulcrum 105, fixing friction plate 121 (referring to Figure 12 and Figure 15～Figure 17), on the other hand, the opposition side (front) of shaft hub 104 ground in bearing pin, that clip speed of a motor vehicle adjust bar 23 and friction plate 121, outer embedding disk spring washer 122 (referring to Figure 12 and Figure 15～Figure 17).Disk spring washer 122 can not be deviate from from bearing pin by the packing ring that is fixed on its front.The elastic force of disk spring washer 122, on friction plate 121 and butt, like this, speed of a motor vehicle adjust bar 23 can remain on any operating position that inclines to the end from the position of leaning forward most the position with shaft hub 104 crimping (wipe contact) of speed of a motor vehicle adjust bar 23.

Be located at the L font arm 106 on the shaft hub 104 of speed of a motor vehicle adjust bar 23 integratedly, by speed change steel wire 146 as rope part, be connected linkedly with the shift cam 137 of Hyaulic infinite variable speed machine 170, and, also remove cam 155 by brake rod 160 and constant speed and be connected (referring to Figure 12 and Figure 13) linkedly, it is related with brake pedal 19 that this constant speed is removed cam 155.

In embodiment, along with speed of a motor vehicle adjust bar 23 from front side in front of the operator during side (rear side) hypsokinesis operation, L font arm 106 rotates up around the bearing pin portion of U font fulcrum 105, speed change steel wire 146 and brake rod 160 are mentioned (stretch-draw) (referring to Figure 15 and Figure 17), past more hypsokinesis operation, the speed of a motor vehicle of the body 1 that travels is speed all the more.This direction of operating (hypsokinesis is all the more fast more), consistent with the direction of operating (the hypsokinesis rotating speed is high more, all the more fast more) of accelerator rod 22.Therefore, for the operator, can easily discern the direction of operating of these two bars 22,23, good operability.In addition, also can suppress maloperation to these two bars 22,23.Continuous action relation about between steel wire 146, bar 160 and the cam 137,155 will describe in detail in the back.

As Fig. 3, Fig. 4 and shown in Figure 7, speed of a motor vehicle adjust bar 23 connects constant-speed traveling with guide groove 107, reaches the outside of operating plate body 10, and described constant-speed traveling is formed on the rod guidance corbel back slab 102 with guide groove 107.Therefore, speed of a motor vehicle adjust bar 23 also can be along the constant-speed traveling of rod guidance corbel back slab 102 with guide groove 107 towards front and back to rotation.Because the constant-speed traveling existence of guide groove 107, the slewing area of speed of a motor vehicle adjust bar 23 is restricted.

From above-mentioned structure as can be known, the base end part of each the control lever mechanism 21～24 in the embodiment all is installed on the turret 61, and rotates integratedly with the turret 60 that constitutes upper shelf 60.

Action effect

According to above-mentioned structure, because top turns to axle 41 on column casing 45 and the steering handwheel, upper shelf 60 and operation plate body 10, can distinguish independently and rotate up and down, so, driving engine cover body 11 and Steering gear cover body 12 are being unloaded, make top turn on column casing 45 and the steering handwheel axle 41 after tilting axis 46 rotation down with toppling over, if upper shelf 60 and operation plate body 10 are opened rotation up around tubular axial region 65, then upper shelf 60 and operation plate body 10 will leave driving engine 5 above, upper shelf 60 and the operation plate body 10 and above the driving engine 5 between, formed enough large spaces that hand can be put in.

Therefore, to the top of driving engine 5, the device class (for example, airfilter 31 etc.) when keeping in repair that is positioned at this position, the existence of upper shelf 60 and operation plate body 10 has no relations.In addition, when maintenance, also needn't as before, to unload operation plate body 10, save this and unloaded the trouble of operation.Therefore, the maintenance activity of the device class at the top of driving engine 5, this position carries out easily.

In addition, upper shelf 60 and the operation plate body 10 and above the driving engine 5 between, enough large spaces that hand can put in have been formed, so, the operation that the control capsule 117 of operating the display part 10b rear side in the plate body 10 is connected wirning harnesses is also simple, and the assembling operation of ride-type rice transplanter also improves.

In embodiment, tubular axial region 65 as the center of turn of upper shelf 60, be positioned at the rear end side of upper shelf 60, promptly near turning to body 15 sides, so, with upper shelf 60 with operation plate body 10 is upwards open when rotating, be formed on operation plate body 10 and open forward with the space between above the driving engine 5.

Like this, the operator can keep in repair the device class at driving engine 5 tops, this position from the front side of the body 1 that travels.Therefore, when maintenance, turn to the existence of body 15 to have no relations, can improve operating efficiency.

In addition, bottom (base end part) from each control lever mechanism 21～24 that facing outward of operation plate body 10 stretched out, all be installed on the turret 61, and rotate integratedly with the turret 61 that constitutes upper shelf 60, so, rotate linkedly with the switching up and down of upper shelf 60 and operation plate body 10, each control lever mechanism 21～24 be the center of turn rotation with tubular axial region 65 also.Therefore, when making upper shelf 60 and operation plate body 10 open and close rotation up and down, needn't unload each control lever mechanism 21～24, their existence also has no relations.Therefore, the rotating operation of switching up and down of upper shelf 60 and operation plate body 10 is easy, in this regard, also can improve the maintenance activity efficient of the device class at driving engine 5 tops, this position.

In addition, connecting arm 70 in the side arm 62, that be positioned at front releasably connects on the auxiliary frame 54 with bolt and nut, these auxiliary frame 54 upright the place aheads that are located at the driving engine 5 in the body frame 2, so, can easily carry out the loading and unloading of side arm 62 (upper shelf 60) and auxiliary frame 54.

And, the front and back length of side arm 62, the leading section that is set at this side arm 62 is from the front end of operation plate body 10 size outstanding towards the place ahead, under the state that driving engine cover body 11 unloaded, the leading section of side arm 62 (part of connecting arm 70) is exposed to the place ahead of operation plate body 10, so the operator pinches this exposed portions serve (part of connecting arm 70), carry out the rotating operation of switching up and down of upper shelf 60 and operation plate body 10.That is, the connecting arm 70 of side arm 62 has concurrently as opening and closing the function of rotating operation with handle up and down, so, even without the grip member of special use, also can easily carry out the rotating operation of switching up and down of upper shelf 60 and operation plate body 10, help to reduce component number.

(6) continuous action relation of the structure of gear shift pedal and gear shift pedal and speed of a motor vehicle adjust bar.

Below, with reference to accompanying drawing 12～Figure 17, the structure of gear shift pedal and the continuous action relation of gear shift pedal and speed of a motor vehicle adjust bar are described.

Gear shift pedal 18 has stretcher 130 that the operator rides and the pitman arm 131 that is connected stretcher 130 back sides.Be fixed on the shaft hub 132 of pitman arm 131 bottoms, be embedded on the lateral velocity variation pedal shaft 133 but unitary rotation is extraterrestrial, these gear shift pedal axle 133 rotatable earth's axis are bearing on the body frame 2.

On the part in gear shift pedal axle 133, that stretch out from the shaft hub 132 of pitman arm 131, switching arm 134 is installed.The switching arm 134 clip gear shift pedal axle 133 ground towards upper and lower to extension.One end of connection rod of gear shifting 135, by transverse axis pin 136 rotationally pivotal joint this switching arm 134 the bottom.The other end of connection rod of gear shifting 135, by transverse axis pin 138 rotationally pivotal joint be arranged in Hyaulic infinite variable speed machine 170 1 sides (is the right side at embodiment), be seen as on the shift cam 137 of U font roughly from the side.

Side protruding end portion in the shift cam 137 is fixed on the gudgeon 139, and this gudgeon 139 constitutes the adjusting portion of laterally stretching out from a side (being right flank the embodiment) of Hyaulic infinite variable speed machine 170.Gudgeon 139 is used for the angle of inclination of the rotation swash plate (figure does not show) of the Hydraulic Pump of regulator solution pressure type stepless speed changer 170.Gudgeon 139 and shift cam 137 are equivalent to the adjusting portion of Hyaulic infinite variable speed machine 170.

Here said Hyaulic infinite variable speed machine 170, have capacity variable type Hydraulic Pump (figure does not show) and capacity fixed HM Hydraulic Motor (figure does not show), rotation by gudgeon 139, the angle of inclination of the rotation swash plate of regulator solution press pump (figure does not show), by changing the discharge direction and the discharge rate of the pressure oil of supplying with HM Hydraulic Motor, the hand of rotation of the output shaft in the regulator solution pressure motor and rotating speed.

In embodiment, when the operator depresses gear shift pedal 18 operations, switching arm 134 is that rotate at the center with gear shift pedal axle 133, by with switching arm 124 connection rod of gear shifting 135 and the shift cam 137 that are being connected linkedly, gudgeon 139 is rotated, like this, adjusting is changed at the angle of inclination of the rotation swash plate of Hydraulic Pump.

At this moment, operator's gear shift pedal 18 of entering into more, switching arm 134 and connection rod of gear shifting 135 draw shift cam 137 more toward rears, make more shift cam 137 and gudgeon 139 towards acceleration direction (clockwise direction among Figure 15 and Figure 16) from rotation up down, as a result, the travel speed of a motor vehicle of body 1 is quickened.

According to the rotation angle of inclination of swash plate and speed change output, be delivered to gear type speed-changing mechanism (figure does not show) from hydraulic motor output shaft, the output of this speed change is switched to the output of advancing or retreating, four-wheel 3,4 before and after passing to then by the operation of main gear-shift lever 21.In addition, the Hyaulic infinite variable speed machine 170 of embodiment is contained in the front of change speed gear box 6 outward.

On the other hand, in the upper end of switching arm 134, the laterally prominent Pivot 140 of establishing, an end of an end of water bumper 141 and the extension spring 142 that resets, pivotal joint is on this Pivot 140 rotationally.The extension spring 142 that resets is to return pressure mechanism, and its effect is, when the foot-operated releasing of gear shift pedal 18, gear shift pedal 18 is automatically turned back to initial position (speed of a motor vehicle is zero position).

The water bumper 141 and the extension spring 142 that resets are configured to front and back shape in opposite directions.Insert in the pin up 144 that is installed on the body frame 2 by U font metal fittings 143 the other end of water bumper 141.Reset the other end of extension spring 142 hangs over from the outstanding inwardly carriage of body frame 2 (figure does not show) and goes up and fix.

Therefore, when operator's pin leaves gear shift pedal 18, by the resistance of water bumper 141 and the mechanical relationship of the elastic recovering force of the extension spring 142 that resets, gear shift pedal 18 arrives initial position with speed recovery (returning) slowly, switching arm 134 and connection rod of gear shifting 135 push shift cam 137 toward the place ahead, shift cam 137 and gudgeon 139 are rotated from the top down towards deceleration direction (anticlockwise direction among Figure 15 and Figure 16), the result, the speed of a motor vehicle of the body 1 that travels is set to deceleration.

Reset poor (below be called the recuperability of gear shift pedal 18 towards initial position) of resistance of the elastic recovering force of extension spring 142 and water bumper 141 is set at the degree of the shaft hub 104 that can not remove the speed of a motor vehicle adjust bar 23 that disk spring washer 122 produces and the friction confining force (confining forces of 120 pairs of speed of a motor vehicle adjusts bar 23 of position holding member) of friction plate 121.

Therefore, operated under the state of gear shift pedal 18 entering into, when speed of a motor vehicle adjust bar 23 manually being operated with the cooresponding operating position of pedal position (position of entering into), promptly, when in-use vehicle velocity modulation pole 23 carries out automatic mobility operation, even operator's pin leaves gear shift pedal 18 thereafter, speed of a motor vehicle adjust bar 23 also will be by the confining force holding position of position holding member 120, gear shift pedal 18 can not return mobilely because of the above-mentioned recuperability towards initial position, and the body 1 that travels carries out constant-speed traveling (travelling automatically) (referring to solid line state among Figure 15).

The continuous action relation of gear shift pedal 18 and speed of a motor vehicle adjust bar 23 is, when increasing and decreasing speed operation (front and back fascinate operation) with speed of a motor vehicle adjust bar 23, and gear shift pedal 18 interlocks, direction is moved towards entering into; But when increasing and decreasing speed operation (operation of entering into) with gear shift pedal 18, speed of a motor vehicle adjust bar 23 is interlock not.

In embodiment, the opposing party protruding end portion in shift cam 137 has formed and has been seen as oblong clearance fit hole 145 from the side.With the leading section of the L font arm 106 bonded assembly speed change steel wires 146 of speed of a motor vehicle adjust bar 23, via pivot backing pin 147 free-running fits in this clearance fit hole 145.

The relation of the aperture size of the outside dimension of pivot backing pin 147 and clearance fit hole 145 is set like this: between the clearance fit hole 145 of pivot backing pin 147 and shift cam 137 sides, form tolerance clearance in the rotation direction that with gudgeon 139 is the shift cam 137 at center.

Being arranged in lean forward most position and gear shift pedal 18 at speed of a motor vehicle adjust bar 23 is positioned under the state (seeing state shown in Figure 15 long and short dash line) of initial position, promptly, under the state that speed of a motor vehicle adjust bar 23 and all inoperation of gear shift pedal 18, the body 1 that travels are stopping, pivot backing pin 147 is positioned at its motion track bottom.Be positioned at its motion track bottom the time at pivot backing pin 147, speed change steel wire 146 is can play a role tensile states of degree of stretching force.

Along with speed of a motor vehicle adjust bar 23 is operated from the past operator of front side front side (rear side) hypsokinesis, L font arm 106 and speed change steel wire 146 draw shift cam 137 from the bottom up, and shift cam 137 and gudgeon 139 are rotated from the bottom up towards acceleration direction (clockwise direction among Figure 15).Its result, the speed of a motor vehicle of the body 1 that travels is quickened.At this moment, shift cam 137 pushes connection rod of gear shifting 135 and switching arm 134 toward the rear, and gear shift pedal 18 is towards the direction action (referring to the solid line state among Figure 15) of entering into.

Otherwise,, depress, make it lax from top to bottom on L font arm 106 and speed change steel wire 146 along with operation that speed of a motor vehicle adjust bar 23 is leaned forward from operator's front side (rear side) toward front side.Like this, with the relax level of speed change steel wire 146 correspondingly, poor (gear shift pedal 18 is towards the recuperability of initial position) effective leeway of resistance of the elastic recovering force of extension spring 142 and water bumper 141 resets, by this recuperability, gear shift pedal 18 returns and moves to and the cooresponding position of the operating position of speed of a motor vehicle adjust bar 23.As a result, the speed of a motor vehicle of body 1 slow down (referring to state shown in the long and short dash line among Figure 15) of travelling.

Therefore, when in-use vehicle velocity modulation pole 23 increased and decreased speed operation (front and back fascinate operation), speed of a motor vehicle adjust bar 23 and gear shift pedal 18 interlocks moved (referring to Figure 15).

On the other hand, be positioned at speed of a motor vehicle adjust bar 23 under the state of the position of leaning forward most, operator's gear shift pedal 18 (referring to the state shown in the long and short dash line among Figure 16) of entering into more, shift cam 137 rotates from the bottom up towards acceleration direction (clockwise direction among Figure 16) more, speed change steel wire 146 is pushed to make it lax.In addition, in embodiment, when only entering into operation gear shift pedal 18,, do not blocked, become the free-running fit state in clearance fit hole 145 by the edge of clearance fit hole 145 though pivot backing pin 147 moves.Therefore, though the speed of a motor vehicle of the body 1 that travels is quickened, the upwards turning effort of shift cam 137 is not passed to speed of a motor vehicle adjust bar 23 by speed change steel wire 146, and speed of a motor vehicle adjust bar 23 still remains on the position (referring to Figure 16) of leaning forward most.

In addition, when operator's pin leaves gear shift pedal 18, poor (gear shift pedal 18 is towards the recuperability of initial position) of resistance of the elastic recovering force of extension spring 142 and water bumper 141 of resetting works, gear shift pedal 18 is returned to initial position with pulsation-free speed, switching arm 134 and connection rod of gear shifting 135 toward the place ahead pushing, make shift cam 137 and gudgeon 139 rotate from top to bottom towards deceleration direction (anticlockwise direction among Figure 16) shift cam 137.

At this moment, though stretching force acts on the speed change steel wire 146, but, before pin leaves gear shift pedal 18, speed change steel wire 146 is original lax, speed change steel wire 146 just becomes from this relaxed state and is can the play a role tensile state of degree of stretching force, so, body 1 slows down though travel, but the power that rotates of shift cam 137 does not pass to speed of a motor vehicle adjust bar 23 by speed change steel wire 146, so speed of a motor vehicle adjust bar 23 still remains on the position of leaning forward most (referring to the state shown in the solid line of Figure 16).

Therefore, when increasing and decreasing speed operation (operation of entering into) with gear shift pedal 18, just gear shift pedal 18 is operated separately, and speed of a motor vehicle adjust bar 23 is interlock (referring to Figure 16) not.

Under the state of operation gear shift pedal 18 of entering into, when manually speed of a motor vehicle adjust bar 23 being operated with the cooresponding operating position of this pedal position (position of entering into), though becoming from relaxed state, speed change steel wire 146 is can the play a role tensile state of degree of stretching force, but, when speed of a motor vehicle adjust bar 23 has arrived the aforesaid operations position, the pivot backing pin 147 of the front in the speed change steel wire 146 is blocked by the clearance fit hole 145 of shift cam 137, the speed change steel wire becomes tensioning state, the operation resistance (operation sense) of speed of a motor vehicle adjust bar 23 increases the weight of (for example, referring to the state shown in the solid line of Figure 15).

When this operating position unclamps hand, speed of a motor vehicle adjust bar 23 keeps its position by the confining force of position holding member 120, gear shift pedal 18 does not return mobile because of above-mentioned recuperability towards initial position, the rotation posture of shift cam 137 and the angle of inclination that is installed in the rotation swash plate on the gudgeon 139, remain on the cooresponding state in position with gear shift pedal 18 and speed of a motor vehicle adjust bar 23, body 1 constant-speed traveling travels.

In addition, after in-use vehicle velocity modulation pole 23 has carried out automatic mobility operation, if under the state of not removing this automatic mobility operation, gear shift pedal 18 is entered into, then can keep speed of a motor vehicle adjust bar 23 operating position the speed of a motor vehicle of the body 1 that travels is quickened.At this moment, if pin leaves gear shift pedal 18, then gear shift pedal 18 returns once more and moves to and the cooresponding pedal position of the operating position of speed of a motor vehicle adjust bar 23, turn back to original constant-speed traveling state, so, in automatic mobility operation, when body 1 quickens to wait slightly if hope is travelled, can remove automatic mobility operation, good operability.

In embodiment, switching arm 134, connection rod of gear shifting 135 and shift cam 137 are equivalent to shaft-like linkage component.This shaft-like linkage component, adjusting portion and gear shift pedal 18 that the speed change of regulator solution pressure type stepless speed changer 170 is exported couple together.In addition, these shaft-like linkage components, speed change steel wire 146, the extension spring 142 that resets of gear shift pedal 18, position holding member 120 are equivalent to make the related bindiny mechanism of speed of a motor vehicle adjust bar 23 and gear shift pedal 18.

(7) continuous action relation of the structure of brake pedal and brake pedal and speed of a motor vehicle adjust bar

Below, with reference to Figure 12～Figure 14 and Figure 17, the structure of gear shift pedal and the continuous action relation of gear shift pedal and speed of a motor vehicle adjust bar are described.

Shown in Fig. 3 waited, brake pedal 19 and gear shift pedal 18 were disposing side by side at left and right directions.The rotating fulcrum of brake pedal 19, be though that the gear shift pedal axle 133 of brake pedal shaft 150 and gear shift pedal 18 is configured on the same axis, but separately constitute.The brake pedal shaft 150 of embodiment can be around its rotational ground axle suspension on change speed gear box 6 with the posture of horizontal expansion.

The base end part of the pedal arm 151 in brake pedal 19, setting firmly arm hub portion 152 (referring to Figure 14 and Figure 17), these arm hub portion 152 outer ends that are embedded in brake pedal shaft 150 also can be rotated integratedly with this brake pedal shaft 150, enter into operation during brake pedal 19 the operator, brake pedal shaft 150 with brake pedal 19 around its rotational.

Though there is not detailed icon, but when the operation brake pedal 19 of entering into, when making brake pedal shaft 150 around its rotational, disconnect with the master clutch on the output shaft in brake pedal shaft 150 is located at change speed gear box 6 relatedly, interrupt transmission of power front and back four-wheel 3,4.In addition, at this moment, the front wheel brake mechanism related with brake pedal shaft 150 acts on the axle drive shaft 171 (referring to Fig. 1) of front-wheel 3, the rotation of this axle drive shaft 81 and front-wheel 3 stopped, body 1 braking of also will travelling.

In addition, on the arm hub 152 of pedal arm 151, carriage 153 is installed, when the operated by foot of brake pedal 19 is removed, makes this brake pedal 19 return an end of the retracing spring (figure does not show) of initial position automatically, be connected on this carriage 153.The other end of retracing spring is connected on the clutch operating plate (figure does not show) of a side that is positioned at change speed gear box 6.

As Figure 12～Figure 14 and shown in Figure 17, one end of く font connecting rod 156, pivotal joint is on the Pivot 154 of the bottom that connects pedal arm 151 rotationally, and this く font connecting rod 156 makes and is arranged in Hyaulic infinite variable speed machine 170 1 sides (embodiment is the right side), is seen as roughly the tabular constant speed of triangle from the side and removes cam 155 and brake pedal 19 interlocks.The other end of く font connecting rod 156, by transverse axis pin 157 rotationally pivotal joint remove on the upper corner 155a of cam 155 in constant speed.

Constant speed is removed the back bight 155b of cam 155, by horizontal fulcrum 159 rotationally pivot suspension on carriage 158 (seeing Figure 13), this carriage 158 be fixed on body frame 2 below.Therefore, the constant speed horizontal fulcrum 159 of removing bight 155b sides after the cam 155 rotates up and down for the center.

Be connected the leading section of the brake rod 160 on the L font arm 106 of speed of a motor vehicle adjust bar 23,, be rotatably connected to constant speed and remove on the forward corner 155c of cam 155 by Pivot 161.

Brake rod 160, constant speed are removed cam 155 and く font connecting rod 156, are used for the automatic mobility operation that compulsory commutation speed of a motor vehicle adjust bar 23 is carried out.

When speed of a motor vehicle adjust bar 23 is carried out automatic mobility operation, under the situation of operation brake pedal 19 of entering into, く font connecting rod 156 is with this operation interlock of entering into, the 155 past the place aheads pushings of constant speed releasing cam, and constant speed is removed cam 155 and rotated from top to bottom around horizontal fulcrum 159 (clockwise direction among Figure 17).

So, the Pivot 161 that constant speed is removed the forward corner 155c side in the cam 155 moves down, downward stretch-draw brake rod 160, L font arm 106 and speed of a motor vehicle adjust bar 23 are rotated towards deceleration direction (clockwise direction among Figure 17) around the bearing pin portion of U font fulcrum 105, speed of a motor vehicle adjust bar 23 is returned to lean forward most position (initial position) (referring to the state shown in the solid line of Figure 17).

Shown in long and short dash line among Figure 15, poor (gear shift pedal 18 is towards the recuperability of initial position) by the resistance of the elastic recovering force of the extension spring 142 that resets and water bumper 141, gear shift pedal 18 turns back to initial position, the result, the speed of a motor vehicle of body 1 of travelling is slowed down, simultaneously, mobility operation is disengaged automatically.

(8) action effect

For of the prior art, as the ride-type rice transplanter of one of working truck example, be sitting in the operator on the operating portion seat, in when operation of entering into of carrying out gear shift pedal, Hyaulic infinite variable speed machine handle is from after the suitable speed change of the power of driving engine, pass to the portion of travelling, make the speed of a motor vehicle increase and decrease speed (for example, referring to TOHKEMY 2003-220849 communique etc.) of the body that travels.

When planting seedlings operation with this ride-type rice transplanter, cannot see or do not see under the situation that Chu is drawn in mark on the field etc. being sitting in operator on the operator's saddle, the operator will stand on the floor of Drive Section and drive the ride-type rice transplanter.

But, in the structure of above-mentioned TOHKEMY 2003-220849 communique record, regulate the operating mechanism of operation usefulness as the speed of a motor vehicle, having only gear shift pedal to stand is located on the ground of operating portion, so, when driving the ride-type rice transplanter with stance, the operation that the body speed of a motor vehicle of travelling is regulated in change is relatively more difficult.

And if adopt the structure of above-mentioned embodiment, then owing to turning to closely being close to of body 15, disposing speed of a motor vehicle adjust bar 23, this speed of a motor vehicle adjust bar 23 can make the operation of the speed change output increase and decrease speed of Hyaulic infinite variable speed machine 170, with the such 2 kinds of operations of operation (so-called automatic mobility operation) that the speed change of Hyaulic infinite variable speed machine 170 output remained with the cooresponding value of pedal position of gear shift pedal 18, so, except carrying out the automatic mobility operation with speed of a motor vehicle adjust bar 23, not only gear shift pedal 18 can be regulated the speed of a motor vehicle of body 1, speed of a motor vehicle adjust bar 23 also can be regulated the speed of a motor vehicle of the body 1 that travels, so the selectance of the speed of a motor vehicle being regulated the operating mechanism of usefulness increases.Therefore, the various situations that can be corresponding neatly take place during operation (for example operator stand when driving etc.), operability improves.

But, in this ride-type rice transplanter, all be the speed of a motor vehicle of regulating operational drive body 1 with gear shift pedal 18 usually.If the operation of the operation of gear shift pedal 18 and speed of a motor vehicle adjust bar 23 keeps the relation of interlock always, then when the operational ton of entering into of gear shift pedal 18 changed, speed of a motor vehicle adjust bar 23 is action automatically in the offering, and was very annoying.

About this point, structure according to embodiment, speed of a motor vehicle adjust bar 23 passes through bindiny mechanism and related with gear shift pedal 18, and their continuous action relation is: when in-use vehicle velocity modulation pole 23 increases and decreases the speed operation, and gear shift pedal 18 interlocks, and when increasing and decreasing the speed operation with gear shift pedal 18, speed of a motor vehicle adjust bar 23 is interlock not, so, when the common operation of ride-type rice transplanter, speed of a motor vehicle adjust bar 23 not with the action interlock of gear shift pedal 18, can automatically not move.Therefore, when the operational ton of entering into of gear shift pedal 18 changed, speed of a motor vehicle adjust bar 23 can action automatically before eyes, and is when the operator travels the speed of a motor vehicle increase and decrease speed operation of body 1, not vexatious.

And, gear shift pedal 18 in the embodiment and speed of a motor vehicle adjust bar 23, by bindiny mechanism's association, their action relationships is, under the situation that increases and decreases the speed operation with gear shift pedal 18, when manually speed of a motor vehicle adjust bar 23 being operated the cooresponding operating position of pedal position with gear shift pedal 18, gear shift pedal 18 is remained on above-mentioned pedal position.So,, can remain on pedal position arbitrarily to gear shift pedal 18 by the M/C of speed of a motor vehicle adjust bar 23.That is, can change the maintenance speed of a motor vehicle of regulating the body 1 that travels in the automatic mobility operation arbitrarily (stepless).Therefore, can keep driving the body 1 that travels with the cooresponding any speed of a motor vehicle of job status ground, operation is extremely easy concerning the operator.

In addition, the bindiny mechanism of embodiment has the reset extension spring 142 and the position holding member 120 of the shaft-like linkage component that is made of switching arm 134, connection rod of gear shifting 135 and shift cam 137, speed change steel wire 146, gear shift pedal 18.The leading section of speed change steel wire 146, by pivot backing pin 147 free-running fits in the clearance fit hole 145 of the shift cam 137 that constitutes adjusting portion, so, because the only existence of the speed change steel wire 146 that works in the stretch-draw direction, whenever entering into during quantitative change of gear shift pedal 18, can prevent conscientiously that the speed of a motor vehicle from regulating 23 actions automatically before eyes.In addition, just in case 146 breakages of speed change steel wire also can utilize the shaft-like linkage component and the extension spring 142 that resets to make gear shift pedal 18 turn back to initial position, so, safe.

In addition, because both are configured in the same side of clipping the left and right sides that the turns to body 15 direct of travel right side of body 1 (in the embodiment be travel) speed of a motor vehicle adjust bar 23 and gear shift pedal 18, so, the vision that is sitting in the operator on the operator's saddle 17 is good, can improve the operability of these speed of a motor vehicle adjusts bar 23 and gear shift pedal 18.

(9) other

The present invention is not limited to above-mentioned embodiment, and various forms can be arranged.For example, the present invention is not limited to the ride-type rice transplanter, also is applicable to the special operation vehicle such as field machine, wheel type loader of trac., combination machine etc.In addition, the center of turn of aforesaid operations plate body, be horizontal fulcrum, do not limit and be and the tilting axis parallel in shape that turns to body, also can be and the coaxial shape of tilting axis, also can be with tilting axis itself as horizontal fulcrum.In addition, can carry out the speed of a motor vehicle adjust bar of two kinds of operations, be not limited to be located at turn to body near, also can be located at and turn on the body itself (for example Steering gear etc.).

The structure of other each one also is not limited to illustrated embodiment, can do various changes in the scope that does not break away from purport of the present invention.

Claims (4)

1. working truck, have lift-launch at the propulsion source of front part of a body that travels, be configured in turning to body, covering the operation plate body of at least a portion above the above-mentioned propulsion source of this propulsion source rear; It is characterized in that,

The above-mentioned body that turns to is the center with horizontal tilting axis, can connect liftoff rotation up and down with the aforesaid operations plate body; The aforesaid operations plate body is the center with the horizontal fulcrum with coaxial shape of above-mentioned tilting axis or parallel shape, can connect the liftoff rotation that opens and closes up and down with the above-mentioned body that turns to; Above-mentioned body and the aforesaid operations plate body of turning to can be distinguished independently and rotate.

2. working truck as claimed in claim 1 is characterized in that, is positioned at the rearward end of the upper shelf of above-mentioned propulsion source top, by above-mentioned horizontal fulcrum, and the rotatable earth's axis is bearing in the above-mentioned body that travels, upright being located on the support unit at above-mentioned propulsion source rear; The leading section of above-mentioned upper shelf releasably is connected with the above-mentioned body that travels; The aforesaid operations plate body is installed on the above-mentioned upper shelf.

3. working truck as claimed in claim 2, it is characterized in that, operate the control lever mechanism of the above-mentioned body action of travelling, stretch out from facing outward of aforesaid operations plate body, the base end part of this control lever mechanism is installed on the above-mentioned upper shelf and also can rotates integratedly with above-mentioned upper shelf.

4. as claim 2 or 3 described working trucks, it is characterized in that,, the anterior cover body and the rear portion cover body that surround above-mentioned propulsion source and aforesaid operations plate body from front and back are installed releasably respectively in the front portion of the above-mentioned body that travels;

The leading section of above-mentioned upper shelf, releasably with the above-mentioned body that travels in, the upright auxiliary frame that is located at above-mentioned propulsion source the place ahead is connected, under the state that is unloading above-mentioned anterior cover, the leading section of above-mentioned upper shelf is exposed to the place ahead of operating plate body.

Images