JP2002233228A - Manned tea field tending machine equipped with traveling body raising means - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a manned tea field tending machine equipped with a new traveling body raising means, having a structure with which the width of leg parts can smoothly be adjusted in a stationary state even in a pavement surface and an exchange operation of crawler belts of a rubber crawler can be carried out. SOLUTION: In this manned tea field tending machine 1, upper frames 21 in a portal frame F are made slidable right and left to be mutually widened horizontally so that the width of right and left leg parts can be adjusted and an auxiliary wheel 4 used for raising a leg part of one side the frame F in the adjustment of the width of the leg parts is attached to the sulky tea field tending machine.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus for performing a tea cutting operation such as plucking and a tea garden management of chemical spraying while traveling over a tea ridge, and particularly to adjusting a leg width and maintaining a running body. The present invention relates to a riding type tea garden management machine equipped with a lifting means for a traveling body with an improved inspection structure.

[0002]

2. Description of the Related Art Recently, a so-called riding-type tea garden management machine that manages a tea garden such as plucking tea leaves while an operator is on board and driving has become widespread. The outline of this device is a portal frame,
It comprises a crawler-type traveling body provided on the leg of the frame, and a management machine unit set on the upper side inside the frame.

[0003] By the way, such a riding-type tea garden management machine,
A variety of specifications are provided according to the scale of the tea plantation and the scale of farming, and among them, those corresponding to the small tea plantation are required to be reduced in size and weight. For this reason, rubber crawlers are also suitable for crawlers of traveling bodies in pursuit of size reduction and weight reduction, and the tendency is to adopt them.

[0004] However, when the rubber crawler as described above is used, the friction between the crawler and the road surface is large when the running is stopped, and the width between the left and right leg frames when the frame is expanded, the so-called tread width. Could not be adjusted. For this reason, while traveling the riding type tea garden management machine, the frame was gradually expanded and adjusted gradually, which was a troublesome operation. In spite of such troublesome work, when the farming scale is small, the tailoring of the tea ridge tends to differ depending on the location of the tea plantation, and the width between the left and right leg frames, the so-called tread width. Is frequently required, and the above-mentioned inconvenience has become more prominent. For iron crawlers, it was possible to adjust the width of the legs in a stationary state on a pavement road, but considering the effects of torsion of the frame, frequent use could cause equipment failure. It was not a very favorable adjustment method.

In the case of rubber crawlers, the crawler belt is an endless belt and its endless state cannot be released unlike an iron crawler. The ingenuity was not particularly improved, and there was a need for improvement in this regard.

[0006]

[Technical Problem Attempted to Be Developed] The present invention has been made in view of such a background, and the width of a leg can be smoothly adjusted in a stationary state even on a pavement road surface. An attempt was made to develop a riding-type tea garden management machine equipped with a new lifting means for a traveling body equipped with a structure capable of exchanging work.

[0007]

That is, a riding type tea garden management machine provided with a traveling body lifting means according to claim 1 comprises a gate-shaped frame, a traveling body provided on a leg of the frame, and An apparatus for managing a tea plantation, comprising a management machine unit set above the inside of the frame, where an operator rides, drives and runs across a tea ridge, and manages a tea garden. The width of the left and right legs can be adjusted by being slidable left and right so that an auxiliary wheel device used to lift one leg of the frame at the time of adjusting the width of the legs is provided. It is a feature. ADVANTAGE OF THE INVENTION According to this invention, the change of the leg part width | variety in the state where the riding type tea garden management machine is stationary can be performed very smoothly. Since the change of the leg width can be performed very smoothly, the work of changing the width of the leg may apply excessive force such as twisting to the frame of the riding type tea garden management machine and cause a failure. Disappears. The auxiliary wheel device can also be used as a jack for replacing a crawler belt.

[0008] In addition to the above requirements, the riding type tea garden management machine provided with the running body lifting means according to claim 2 further comprises a jack fixed to one of the left and right leg frames. And a rollable wheel provided at the lower end. According to the present invention, since a jack is used, a commercially available product can be used as it is, and it can be implemented at a low cost.

A riding-type tea garden management machine provided with a running body lifting means according to claim 3 is characterized in that, in addition to the requirements described in claim 2, the jack uses a screw jack. It consists of According to the invention,
Since a screw jack is used, the structure is simple and the implementation is more inexpensive.

[0010] Furthermore, a riding-type tea garden management machine provided with a running body lifting device according to claim 4 is characterized in that the crawler is a rubber crawler, in addition to the requirement according to claim 1, 2, or 3. It is a feature. According to the present invention, when the traveling body is a rubber crawler, it becomes possible to change the leg width in a state where the riding-type tea garden management machine is stationary, which has conventionally not been possible.

Furthermore, a riding-type tea garden management machine provided with a traveling body lifting means according to claim 5 comprises a gate-shaped frame, a traveling body provided on a leg of the frame, and an upper inside of the frame. In a device for managing a tea plantation, wherein a worker rides, drives and runs while straddling a tea ridge, and a jack that lifts one leg of the frame is provided. It consists of. According to the present invention, since a jack is attached to the riding-type tea garden management machine, for example, it is possible to replace the crawler belt of the traveling body, repair or check, etc. without preparing a separate jack or the like, which is convenient. It is.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be specifically described below based on the illustrated embodiments. Reference numeral 1 denotes a riding-type tea garden management machine to which the present invention is applied, which is shown in its entire structure in FIGS. And this traveling unit 2
And a management device unit 3 that directly contributes to the tea cutting operation, and an auxiliary wheel device 4 that is used when adjusting the leg width and when replacing the crawler belt 60.

First, the traveling machine unit 2 in the riding-type tea garden management machine 1 will be described. This traveling unit 2
In order to be able to travel across the tea ridge A, a frame F having a substantially gate shape as viewed from the traveling direction is used as a machine frame member, and various devices for traveling are provided on the frame F. The frame F includes left and right leg frames 20 positioned so as to rise between the tea ridges A, an upper frame 21 that horizontally connects the upper ends of the leg frames 20, and a part of the leg frame 20. And an elevating frame 22 which is attached so as to be able to move up and down. At the lower end of the leg frame 20, a crawler 6 serving as a running body is provided.

The upper frame 21 will be described.
The upper frame 21 includes a right frame 21R and a left frame 2
1L is nested so as to be extendable and contractible, and is configured to be slidable left and right by the width adjusting device 5, so that the leg width, which is the interval between the left and right leg frames 20, is adjusted. . The width adjusting device 5 will be described. As an example, as shown in FIG. 5, a feed screw 50 provided with a handle 51 at an end is connected to a right leg frame 2.
The feed screw 50 is screwed to a feed screw nut 52a provided in an operation frame 52 fixed to an end of the left frame 21L. Further, a minimum width stopper 54 and a maximum width stopper 53 are provided on the right frame 21R, and the maximum width and the minimum width of the upper frame 21 are regulated by abutting the restriction pieces 52b provided on the operation frame 52. Have been. The width adjusting device 5 has the above configuration, and the upper frame 21
Is a mechanism in which the feed screw nut 52a screwed to the feed screw 50 is moved left and right by rotating the handle 51 of the width adjusting device 5, whereby the upper frame 21 expands and contracts, and the leg width is adjusted. Is done.

The crawler 6 as a traveling body will be described.
The crawler 6 is a rubber crawler. The crawler belt 60 has a steel cord embedded therein, but does not have a core metal such as an iron core. Therefore, vibration during traveling is extremely small. In addition, as the traveling body, in addition to the rubber track without the core metal as described above, a normal rubber track, an iron crawler, and a tire can also be used.

A cockpit 23 is provided in front of the right leg frame 20, and a controller 24 for maneuvering is further provided in front of the cockpit 23. As a feature of the present embodiment, as an example, the height of the cockpit 23 is provided at a height of 90 to 110 cm above the ground, and the height of the step 23S for placing a foot is provided at a height of 50 to 70 cm above the ground. It is provided at a lower position than a conventional riding-type tea garden management machine. Therefore, the worker can carry out the work safely, for example, in the work on a steep slope or the like, or in the work of loading / unloading the work on / from the truck bed.

A motor 25 to which a gasoline engine or the like is applied is mounted on the upper frame 21, and the crawler 6 is driven by the motor 25. In driving the crawler 6, as shown in FIG. 10 (b), the power of the prime mover 25 is transferred to two HST transmissions 26 (for example, a hydraulically driven transmission using a variable displacement swash plate type oil pump and an oil motor; HST is hydro-stat
ic transmission), and transmits this rotational power to the two left and right main shafts 27 provided on the upper frame 21 via the speed reducers, and further to the left and right drive shafts 28 at the outer ends of the main shafts 27. It is transmitted by bevel gears 27a and 28a,
Bevel gears 28a, 62
Is communicated through. Instead of the right and left drive shafts 28, as shown in FIG.
Can be modified so that the rotation of the main shaft 27 is transmitted to the drive shaft 61a of the starting wheel 61 of the crawler 6 by using. There is also a device in which a speed reducer is incorporated in the HST type transmission, but in this case, it is not necessary to separately provide a speed reducer outside this device.

Next, the main members of the management unit 3 will be described. First, reference numeral 30 denotes the above-mentioned cutting blade, which is a so-called cutting blade which forms a large number of teeth on a long rod-shaped member combined with a pair of upper and lower blades, and performs reciprocating sliding of the pair of upper and lower cutting blades. It is a clipper-type cutting blade. Of course, the cutting blade 30 applied here does not have to be such a so-called clipper type blade, and may be, for example, a rotary rotary blade. The motor 31 for driving the cutting blade 30 is independent of the motor 25 for driving the crawler 6.
0 is provided on one side.

A blower pipe 33 having a large number of branch pipes is provided above and in front of the cutting blade 30.
The transfer air generated by the fan 32 provided below the motor 1 and driven directly by the prime mover 31 is supplied to transfer the tea leaves backward. A guide frame 34 is provided directly behind the cutting blade 30. Bag bases 35 for receiving the storage bags S are provided in parallel to the left and right of the guide frame 34.

Although the detailed description of the lifting frames 22 on both the left and right sides of the guide frame 34 is omitted, rollers 22a are appropriately provided, and the
, And move up and down in a state where they can be lifted up by a ball screw mechanism, a chain, or the like as a whole. The management unit 3 is relatively easily and detachably attached to the elevating frame 22. In the illustrated embodiment, two cutting blades 30 and a prime mover 31 for driving the same are used. However, one blade and the prime mover perform the entire mowing of the tea furrow A. Various embodiments can be adopted.

In this embodiment, the management unit 3
Although an example of a plucking machine for plucking tea leaves has been shown as above, it is possible to mount a management machine unit such as a tea trimming machine such as a leveling machine, a middle trimming machine, a branching machine, or a pest control machine. .

Next, the auxiliary wheel device 4 as an example of the lifting means will be described. The auxiliary wheel device 4 is provided, for example, in a detachable manner on the leg frame 20 and the upper frame 21, and is used for adjusting the leg width of the riding-type tea garden management machine 1 and replacing the crawler belt 60 of the crawler 6. Removed when used. Specifically, as shown in FIG. 6, the auxiliary wheel device 4 is provided with a wheel 47 at the lower end of the jack 40 so as to roll freely. The jack 40 uses a screw jack, and includes a connection frame 41 that is connected and fixed to the leg frame 20 of the riding-type tea garden management machine 1, a body frame 42,
And a pillar frame 43 fitted inside the body frame 42 in a nested manner. A trapezoidal screw 44 is inserted into the main body frame 42 from the upper surface of the connection frame 41 and is rotatably supported. A handle 45 is provided at the upper end. On the other hand, a trapezoidal screw nut 43 a is fixedly provided in the pillar frame 43, and the trapezoidal screw nut 43 a is screwed to the trapezoidal screw 44. A member indicated by reference numeral 46 at the end of the connection frame 41 is a fixing pin. After the connection frame 41 is inserted into the leg frame 20, a fixing hole drilled up and down of the jack mounting tube 20 a and a top and bottom of the connection frame 41. The fixing pin 46 is inserted and fixed by inserting the fixing pin 46. The jack 40 can be attached to and detached from the leg frame 20 by various attachment / detachment means such as those using a fixing pin 46 and those using a clamp. In addition, although the wheel 47 has been described in one embodiment, the stability may be further improved by providing a plurality of wheels such as two or three wheels. The auxiliary wheel device 4 is configured as described above. By rotating the handle 45, the trapezoidal screw nut 43a moves up and down, whereby the pillar frame 43 moves up and down, and the jack 40 expands and contracts.

The lifting means includes a crawler belt 6.
In the case of using only for replacement of 0, repair or inspection of a traveling body such as the crawler 6, it is not necessary to equip the lower end of the jack 40 with the wheel 47 unlike the auxiliary wheel device 4, and only the jack is used. I do not care.

The present invention has a specific configuration as described above, and this operation will be described below. (1) Mode during Travel First, in the mode during travel, the crawler 6 is a rubber crawler and the crawler belt 60 is not provided with a metal core, so that the vibration is very small. Therefore, tea trees can be stably plucked, and it is possible to prevent a large number of old shoots and stems from being harvested together with new shoots due to the influence of vibration. In addition, since the cockpit 23 is located at a lower position than before, there is a great sense of security, for example, when working on a slope, traveling on a rough road, or driving when loading on a truck bed or the like,
Less danger in case of emergency.

(2) Mode of Adjusting Leg Width of Riding-Type Tea Garden Management Machine Next, the mode of adjusting the leg width of the riding-type tea garden management machine 1 will be described. As a feature of the present embodiment, when adjusting the leg width of the riding-type tea garden management machine 1, the riding-type tea garden management machine 1
The auxiliary wheel device 4 is used in a stationary state. Auxiliary wheel device 4
In using the, first, it is confirmed that the jack 40 of the auxiliary wheel device 4 is in a contracted state, and if it is extended, the handle 45 is rotated to contract. And a jack mounting pipe 2 for one of the right and left leg frames 20.
The auxiliary wheel device 4 is attached to 0a. Specifically, FIG.
As shown in (a), after the tip of the connecting frame 41 is inserted into the jack mounting tube 20a, the fixing holes drilled up and down of the jack mounting tube 20a and the fixing holes drilled up and down of the connecting frame 41 are aligned. Here, the fixing pin 46 is inserted and fixed.

Next, as shown in FIG.
The handle 45 is rotated to pull out the pillar frame 43 downward, and the jack 40 is extended, whereby the leg frame 20 on the side to which the auxiliary wheel device 4 is attached is raised. In this state, the handle 51 of the stretching device is rotated as shown in FIG.
To stretch. At this time, the wheel 47 is located below the jack 40.
Is provided, the wheels 47 roll, and the upper frame 21 is easily extended with a small force. As described above, the upper frame 21 is slid right and left so as to expand in parallel with each other, and when the adjustment of the leg width is completed, the handle 45 of the jack 40 is rotated in the opposite direction as shown in FIG. The leg frame 2 that has shrunk and raised
Then, the auxiliary wheel device 4 is removed as shown in FIG.

(3) Replacement of Crawler Belt Next, replacement of the crawler belt 60 will be described.
When replacing the crawler belt 60, the auxiliary wheel device 4 is attached to the leg frame 20 on the side where the crawler belt 60 is replaced. At this time, as shown in FIG. 8A, the auxiliary wheel device 4 is mounted so as to be located inside the leg frame 20, contrary to the case of the leg width adjustment mode. This is because when the crawler belt 60 is replaced,
Is not to be in the way. The manner of use of the auxiliary wheel device 4 is the same as that of the riding-type tea garden management machine 1 when the leg width is adjusted, and the jack 40 of the auxiliary wheel device 4 is extended as shown in FIG. Leg frame 20
, And after replacing the crawler belt 60,
The jack 40 of the auxiliary wheel device 4 is contracted again as shown in FIG. 8C, and the leg frame 20 is lowered.
The auxiliary wheel device 4 is removed as shown in FIG.

[0028]

According to the riding type tea garden management machine of the first aspect, the auxiliary wheel device 4 used to lift one leg of the frame F at the time of adjusting the leg width is additionally provided. Changing the leg width in a state where the machine 1 is stationary can be performed very smoothly. Further, since the change of the leg width can be performed very smoothly, the work of changing the leg width exerts an unreasonable force such as twisting on the frame F of the riding-type tea garden management machine 1, which may cause a failure. Disappears. The auxiliary wheel device 4 can also be used as a jack for replacing the crawler belt 60.

Further, according to the riding type tea garden management machine of the second aspect, the auxiliary wheel device 4 comprises the jack 40 fixed to the left and right leg frames 20 and the rollable wheels 47 provided at the lower end thereof. Therefore, a commercially available product can be used as it is, and it can be implemented at a low cost.

According to the riding-type tea garden management machine of the third aspect, since the jack 40 uses a screw jack, the structure is simple and the implementation can be performed at lower cost.

Furthermore, according to the riding type tea garden management machine of the fourth aspect, when the traveling body is a rubber crawler, the leg width cannot be changed while the riding type tea garden management machine 1 is stationary. I can do it.

Further, according to the riding-type tea garden management machine of the fifth aspect, since the riding-type tea garden management machine 1 is provided with a jack for lifting one leg of the frame F, no separate jack or the like is prepared. For example, the crawler belt 60 of the traveling body can be replaced, repaired, or inspected, which is convenient.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a usage state of a riding-type tea garden management machine of the present invention.

FIG. 2 is an upper side view and an enlarged view of a part thereof.

FIG. 3 is a plan view of the same and an enlarged view of a part thereof.

FIG. 4 is a front view and an enlarged view of a part of the same.

FIG. 5 is an enlarged longitudinal sectional front view of the width adjusting device.

FIG. 6 is an enlarged longitudinal sectional front view of the auxiliary wheel device.

FIG. 7 is an explanatory view showing stepwise a leg width adjustment mode of the riding type tea garden management machine of the present invention.

FIG. 8 is an explanatory view showing stepwise how the crawler belt is replaced.

FIG. 9 is a side view showing an example of a crawler drive mechanism using a chain.

FIG. 10 is an explanatory diagram showing a comparison between a conventional flow of power transmission to the crawler and a flow of power transmission to the crawler in the embodiment.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Riding type tea garden management machine 2 Traveling machine unit 3 Management machine unit 4 Auxiliary wheel device 5 Width adjustment device 6 Crawler 20 Leg frame 20a Jack mounting tube 21 Upper frame 21R Right frame 21L Left frame 22 Elevating frame 22a Roller 23 Pilot seat 23S Step 24 Controller 25 Prime mover 26 HST type transmission 27 Main shaft 27a Bevel gear 28 Drive shaft 28a Bevel gear 29 Chain 30 Cutting blade 31 Prime mover 32 Fan 33 Wind pipe 34 Guide frame 35 Bag base 40 Jack 41 Connection frame 42 Main frame 43 Foot pillar Frame 43a Trapezoidal screw nut 44 Trapezoidal screw 45 Handle 46 Fixing pin 47 Wheel 50 Feed screw 51 Handle 52 Operation frame 52a Feed screw nut 52b Restriction piece 53 Minimum width stopper 60 crawler belt 61 greatly stopper 54 drive sprocket 61a drive shaft 62 bevel gear A tea ridges F frame S bag

Claims (5)

[Claims] The present invention comprises a gate-shaped frame, a traveling body provided on a leg portion of the frame, and a management machine unit set above the inside of the frame. In the device that runs while straddling and performs tea garden management, the frame is configured to be slidable left and right so that the upper frame expands in parallel with each other so that the width of the left and right legs can be adjusted. A riding-type tea garden management machine equipped with a running body lifting means, further comprising an auxiliary wheel device used to lift one leg of the frame during width adjustment. 2. The traveling body according to claim 1, wherein the auxiliary wheel device comprises a jack fixed to one of the left and right leg frames, and a rollable wheel provided at a lower end of the jack. A riding type tea garden management machine equipped with lifting means. 3. The riding type tea garden management machine according to claim 2, wherein said jack uses a screw jack. 4. The riding type tea garden management machine according to claim 1, wherein the traveling body is a rubber crawler. 5. A gate-shaped frame, a traveling body provided on a leg portion of the frame, and a management machine unit set on an upper side inside the frame, wherein an operator gets on and drives the tea furrow. In a device for managing a tea plantation, the jack for lifting one side of the frame and replacing, repairing or inspecting a crawler belt is provided. Riding tea garden management machine equipped with the above means.