JPH08205657A - Self-propelled tea garden management machine - Google Patents

Abstract

(57) [Abstract] [Problem] To improve the running performance of a self-propelled tea garden management machine. SOLUTION: The traveling unit that travels between the ridges of the tea tree ridge supports a tea garden management machine (tea leaf picking device) that moves on the ridge of the tea tree ridge in a cantilevered manner. The front wheel 2 and the driving rear wheel 5 are spaced apart from each other in the front-rear direction on a vehicle body frame extending to
Is a low tracked type in which a rubber crawler 4 is wound between a pair of front and rear wheels. On the other hand, in the main body 1, an engine 3 as a power source serving as a heavy load is provided above the front portion of the vehicle body frame, and a transmission 6 as a transmission system serving as another heavy load is provided between the front wheel 2 and the drive rear wheel 5. The transmission power of the engine 3 is transmitted to the rear wheels 5 by a gear shift operation of the transmission 6.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a self-propelled tea plantation management machine, and more specifically, a cantilevered tea plantation management machine for moving a tea plant ridge on a traveling unit for traveling between the tea tree ridges. The present invention relates to a self-propelled tea plantation management machine that supports various operations such as plucking tea leaves and pruning.

[0002]

2. Description of the Related Art Conventionally, as a self-propelled tea plantation management machine, a traveling unit having front wheels and rear wheels has a tea plantation management machine that moves on the ridges of a tea tree ridge supported in a cantilever manner. However, the traveling unit is steered while advancing through one ridge adjacent to the tea tree ridge in a back state and the other ridge is advanced.
Is known to support the projecting side of the tea plantation management machine and perform various operations such as plucking and pruning tea leaves while the process is in progress. 5
The prior art described in 9-30663 is proposed.

[0003]

The self-propelled tea garden management machine of the prior art described above has the following problems because both the front wheels and the rear wheels of the traveling unit are composed of tire wheels. . Since the ground contact area of the drive wheels is small, when the tea leaf storage bag equipped in the tea plantation management machine is full (about 20 kg) and the running resistance becomes large, the drive tire wheels slip and the tea plantation management work is done. You can't do it smoothly. Even when performing tea plantation management work in a state where the furrows are soft, such as after deep plowing work for tea plant furrows or immediately after rain, the tire wheels slip and the tea plantation management work cannot be performed smoothly. In order to increase the driving force of the driving wheel, the wheel diameter must be increased to a certain extent or more, which increases the vehicle height, such as a low-hem tea tree ridge or a nursery garden (for example, the hem height). In the case of attempting to perform tea leaf plucking work at a height of 350 to 400 mm or less), the cutting blade of the plucking device cannot be lowered to the hem side, and there is a problem that the required tea garden management work cannot be performed.

SUMMARY OF THE INVENTION An object of the present invention is to provide a self-propelled tea garden management machine having improved running performance in view of the above problems.

[0005]

Means for Solving the Problems In order to achieve the above object, the present invention is a traveling unit that travels between the ridges of a tea tree ridge, supporting a tea garden management machine that moves on the ridges of the tea tree ridge in a cantilevered manner. In a self-propelled tea garden management machine that performs various operations such as plucking tea leaves, pruning, etc., the traveling unit includes front and rear wheels spaced apart from each other in a front and rear direction on a body frame extending in the front-rear direction. The driving rear wheel is composed of a rubber crawler wound between a pair of front and rear wheels, and has a low endless track type,
A power source is arranged above the front of the vehicle body frame, and a transmission system for receiving power from the power source is arranged between the front wheels and the driving rear wheels so that the driving force is transmitted from the transmission system to the rear wheels. It is characterized by being configured.

[0006]

In the self-propelled tea garden management machine equipped with the traveling unit having the above construction, the rear wheel serving as the driving wheel is constituted by a low-profile endless track type in which a rubber crawler is wound, and the power source Since the weight is arranged in the front part of the body frame and the weight of the transmission system is arranged between the front wheels and the driving rear wheels, the arrangement structure of these heavy objects and the running of the rear wheels by the endless track zone. By synergizing with the performance, even if the furrow ground is soft, for example, stable running is ensured without slippage, and the tea garden management work can be smoothly performed.

Further, since the running portion of the running unit can lower the ground height, the cutting blade of the plucking device can be lowered even in a tea ridge or a nursery where the hem is low, and the tea garden management work can be properly performed. be able to. Furthermore, because the rear wheels are in the endless track, the soil between the ridges will not be strongly compacted,
The vigor of the tea plant is not deteriorated, and the number of deep plowing work in the furrow can be reduced.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the accompanying drawings. 1 and 2 show an example of a self-propelled tea garden management machine (tea leaf picking machine) equipped with a traveling unit of the present invention, where 1 is introduced into one of the ridges of a tea tree ridge, and a first operator A traveling unit main body (vehicle body frame) having a narrow width and a long length, which is steered by a vehicle. ing. At the rear portion of the main body 1, there is provided an endless track type rear wheel 5 in which a rubber crawler 4 is wound between a pair of front and rear wheels to have a low height (about 200 mm). The power that is input from the engine 3 to the transmission 6 and changed in speed and output to the endless track type rear wheels 5 is transmitted to the drive wheels 8 via the chain transmission system 7 and is thus transmitted to the rubber crawler 4.
Is driven to run by itself. The transmission 6 is provided with a speed change lever 6a, and the transmission 6 is connected to the transmission 6 from the engine 3.
Although not shown, a tension clutch mechanism is provided in the belt transmission system to the. The front wheel 2 may be a double tire, and the rubber crawler 4 is not limited to one and may be two.

Two pillar frames 9 are erected at the center of the main body 1 in the front-rear direction, and a tea leaf plucking device 10 is supported on the pillar frames 9 so as to be vertically adjustable, as will be described later. An auxiliary handle 11 is attached to an outer end of the tea leaf plucking device 10 so as to be vertically adjustable via a chrysanthemum seat 11a, and a second worker holding the auxiliary handle 11 can attach the front wheel 2 and the rear wheel 5 to each other. The tea leaf plucking work is performed while the tea leaf plucking device 10 is moved while the main body 1 moves while being located between the other ridges that face each other with the tea tree ridges sandwiched between the running ridges. ing.

As shown in FIG. 3, the tea leaf plucking device 10 is provided with side plates 13 and 13 (one of which is not shown) forming a pair at both end portions of the support frames 12 and 12.
A cutting blade 14 composed of an arcuate hair clipper blade is supported on the front side of the lower portion between 13 so as to reciprocate. At the outer ends of the support frames 12, 12, a fan 15 is attached to the rotation shaft 1 thereof.
5a is supported in the up-down direction, and a transmission case 16 that is transmitted via a belt transmission system 15b is provided below the fan 15, and a cutting blade drive shaft 17 is hung from the transmission case 16 to cut the cutting blade drive case 14a. The power is transmitted to the cutting blade 14 to drive it. Gearbox 16 and fan 15
Although not shown, a tension clutch mechanism is provided in the belt transmission system 15b between the and. Further, an air guide tube 18 is connected to the fan 15, and a large number of nozzles 19, 19, ... Are projected from the air guide tube 18 and are provided above the cutting blade 14 and behind the cutting blade 14. The guide plates 20 are arranged at predetermined intervals so that a pressured air is blown toward the guide plates 20 to blow the tea leaves picked by the cutting blade 14 backward. The above-mentioned configuration of the tea leaf plucking device 10 is the same as a conventionally known one.

An input gear box 21 having a bevel gear for transmitting power to its rotating shaft is provided above the fan 15, and the input gear box 21 rotates from a side of the input gear box 21 via a flexible shaft 22. Power is input. The base end side of the flexible shaft 22 extends in the vicinity of the engine 3, and its base end is connected to a flexible transmission case 23 that is provided in the vicinity of the engine 3 and receives power from the engine 3, Power is transmitted to the input gear box 21. The belt transmission system for transmitting power from the engine 3 to the flexible transmission case 23 is provided with a tension clutch mechanism (not shown).

A tea leaf plucking device 1 is mounted on the pillar frame 9.
An elevating body 24 having a roller for vertically adjusting 0 is provided. The lifting rod 24 includes a support rod 2 in the rearward horizontal direction.
5, a support cylinder 25 fixed to the support frames 12, 12 of the tea leaf plucking device 10 is inserted into the support rod 25, and the tea leaf plucking device 10 is supported so as to be movable in the front-rear direction. The forward / backward movement adjustment is performed by replacing a pin between the support cylinder 26 and the support rod 25.

A handle support rod 27 is provided on the support frame 9 so as to project toward the front. A handle rod 28 having a T-shaped tip is provided at the tip of the handle support rod 27 in the longitudinal direction thereof. The compression spring 29 is located on the part slightly rearward of the half.
It is rotatably supported in the up-down direction by a rotation support portion 30 which is inserted. A pulley-shaped wire roller 31 is pivotally supported at the rear end of the handle rod 28, and the support frame 9
A pulley-shaped wire roller 32 is also pivotally supported at the upper end of the wire 34, and a wire 34 fed from a wire reel 33 provided at the lower end of the handle rod 28 on the tip side is brought into rolling contact with the tip of the wire 34 to move up and down. It is connected to the body 24. Then, the tea leaf plucking apparatus 10 is largely adjusted up and down by winding up and rewinding the wire 34 by the wire reel 33, and is vertically adjusted up and down by rotating the handle rod 28 up and down around the rotation support portion 30. To be done. The spring pressure of the compression spring 29 inserted in the rotation support portion 30 is set so as to rotate the handle rod 28 and hold the tea leaf plucking device 10 at a position where it is supported.

A tension clutch mechanism provided in a belt transmission system from the engine 3 to the transmission 6 is inserted into one of the left and right grips of the T-shaped portion of the handle rod 28,
A traveling clutch lever 35 for cutting and a throttle lever 36 of the engine 3 are provided, and a tension clutch mechanism provided on a belt transmission system 15b for transmitting power from the fan 15 to the cutting blade 14 is provided on the other side. A cutting blade clutch lever 37 for cutting is provided.
Furthermore, in the straight part near the grip of the handle rod 28,
A blower clutch lever 38 is provided for turning on and off a tension clutch mechanism provided in a belt transmission system for transmitting power from the engine 3 to the flexible transmission case 23.

As shown in FIG. 4, the front shaft 2a of the front wheel 2 supported by the main body 1 so as to be horizontally rotatable is provided with the front wheel 2 in the moving direction of the machine body (the direction of the arrow in FIG. 1). A spring 39 is provided to urge it to face slightly inward.
A steering handle 40 is attached to the front wheels 2 and extends to the front side of the machine body. The tip portion 40a of the steering handle 40 is bent so as to contact the side of the waist of the first operator, and the tip portion 40a of the steering handle 40 is
The height and bending angle of the knobs 41, 41 can be adjusted. In addition, at the rear of the tea leaf plucking device 10,
A tea leaf accommodating bag 42 made of a net for accommodating the plucked tea leaves is attached. The tea leaf accommodating bag 42 moves between the front wheels 2 and the tea tree ridges on the side of the endless track 5, but is attached to the body 1 at the rear end position of the endless track 5.
Further, a tea leaf storage bag moving carriage (not shown) or a tea leaf storage bag moving sheet can be attached.

In the self-propelled tea leaf plucking machine of one embodiment constructed as described above, the traveling unit main body 1 having the front wheel 2 and the rear wheel 5 attached to one of the ridges of the tea tree ridge is located first.
The second operator is positioned between the other ridges of the tea tree ridge while moving backward, and the auxiliary operator 11 holds the auxiliary handle 11 and moves with the traveling of the machine to perform the tea leaf plucking operation by the tea leaf plucking device 10. To do. Then, the tea leaf plucking device 10 cuts approximately half of the width of the tea ridge in the forward stroke, and cuts the other half in the backward stroke. The tea leaves plucked by the cutting blade 14 are blown backward by the pressure air from the nozzles 19, 19 ... And stored in the tea leaf storage bag 42. When performing such a tea leaf plucking operation, the following operations and adjustments are performed in the self-propelled tea leaf plucking machine.

Power from the traveling device drive engine 3 is transmitted to an intermediate pulley by a belt transmission system, and a belt transmission system from the intermediate pulley to the transmission 6 is provided with a continuously variable transmission mechanism (variable pulley). It is input to the machine 6. The drive wheel 8 is driven from the transmission 6 by the chain transmission system 7 to rotate the rubber crawler 4, the rear wheel 5 of the endless track type is operated, and the vehicle body is driven by the front wheel 2 and the rear wheel 5. . Power is turned on and off from the engine 3 to the transmission 6 by operating a tension clutch mechanism provided between the engine 3 and an intermediate pulley with a traveling clutch lever 35. It can also be performed by operating the shift lever 6a. Further, the shift operation is performed by operating the shift lever 6a and the continuously variable transmission mechanism (variable pulley). Then, the airframe stably runs between the tea tree ridges while being supported low by the two wheels of the front wheels 2 and the endless track type rear wheels 5.

Power from the cutting blade drive-related engine 3 is transmitted to the flexible transmission case 23 via the belt transmission system, is input from here to the input gear box 21 via the flexible shaft 22, and is input from the input gear box 21 to the fan. The power is transmitted to the rotating shaft 15a. Power input to this fan 15,
The cutting operation is performed by the engine 3 and the flexible transmission case 23.
The tension clutch mechanism provided between and is operated by operating the blower clutch lever 38. Further, the power transmission to the cutting blade 14 is performed by the belt transmission system 15 from the rotating shaft 15a of the fan.
b, transmission case 16, cutting blade drive shaft 17,
The power is turned on and off by using the tension clutch mechanism provided on the belt transmission system 15b and the cutting blade clutch lever 37.
Operate by. Therefore, the cutting blade 14 is
It can be driven independently and stopped while it is driven.

The tea leaf plucking work engine 3 is started, and the engine speed is adjusted by the throttle lever 36. By operating the blower clutch lever 38 to drive the blower 15, the cutting blade clutch lever 3
By operating 7, the cutting blade 14 operates. The speed change lever 6a is operated to select a traveling speed suitable for the plucking operation, and the traveling clutch lever 35 is operated to cause the machine body to travel, and the tea leaf plucking operation is started. The traveling speed of the machine body after the start of the plucking operation is adjusted by operating the continuously variable transmission (variable pulley). The first worker monitors the tea leaf plucking condition by the tea leaf plucking device 10 while walking backward, and rotates the handle rod 28 as necessary to vertically adjust the tea leaf plucking device 10. Further, the lateral adjustment of the tea leaf plucking device 10 with respect to the tea tree ridges is performed by the second operator moving the auxiliary handle 11 up and down. First
Of the steering handle 40 on the side of the waist of the worker
a is abutted, and the front wheel 2 follows the rotation of the support shaft 2a along the moving direction of the first operator. In addition,
Since the front wheel 2 is biased by the spring 39 so as to face slightly inward with respect to the moving direction (arrow) of the machine body, the tip end portion 40a of the steering handle 40 is always in contact with the side of the waist of the first operator. However, it automatically rotates and follows the moving direction of the operator to control the moving direction of the front wheel 2, that is, the machine body.

Other Adjustments and Operations The height of the tip portion 40a of the steering handle 40 is adjusted by the knobs 41, 41 according to the height of the first operator, the ridge width of the tea ridge, and the like. The auxiliary handle 11 is vertically adjusted by the chrysanthemum 11a according to the height of the second operator. The vertical adjustment of the tea leaf plucking device 10 and the angle adjustment of the cutting blade 14 are largely adjusted by winding and unwinding the wire 34 by the wire reel 33, and the handle rod 28 is rotated up and down about the rotation support portion 30. Fine adjustment by doing.
Further, the tilt adjustment of the tea leaf plucking device 10 is performed by a second operator moving the auxiliary handle 11 up and down.

[0021]

According to the self-propelled tea garden management machine according to the present invention, the front wheel and the drive rear wheel are spaced forward and backward with respect to the vehicle body frame of the traveling unit, and the drive rear wheel is a rubber crawler. It is composed of a low-profile endless track that is wound, and a power source as a heavy object is placed in the front part of the body frame, and a transmission system as another heavy object is placed between the front wheels and the rear drive wheels. Therefore, the arrangement configuration of these heavy objects and the improvement of the traveling performance by the crawler type of the driving rear wheels are synergistically ensured, for example, even when the furrow ground is soft, stable traveling is ensured without causing slip, and the tea garden The effect that the management work can be performed smoothly is obtained.

Further, since the traveling height of the traveling unit can be lowered, the cutting blade of the plucking device can be lowered even in a tea ridge or a nursery where the hem is low, and the tea garden management work can be properly performed. . Furthermore, since the rear wheels are in the endless track, the soil between the ridges is not strongly compacted, so that the vigor of the tea plant is not deteriorated, and the number of deep tillage work can be reduced. .

[Brief description of drawings]

FIG. 1 is a side view of an entire self-propelled tea garden management machine according to the present invention.

FIG. 2 is a front view of the same.

FIG. 3 is a partial cross-sectional side view of the tea garden management machine.

FIG. 4 is an enlarged side view of a front wheel.

[Explanation of symbols]

 1 Main Body 2 Front Wheel 3 Engine 4 Rubber Crawler 5 Endless Track Band 6 Transmission 7 Chain Transmission System 8 Drive Wheel 9 Support Frame 10 Tea Leaf Plucking Device 11 Auxiliary Handle 12 Support Frame 13 Side Plate 14 Cutting Blade 15 Fan 16 Speed Change Case 17 Cutting Blade Drive Case 18 Air guide tube 19 Nozzle 20 Guide plate 21 Input gear box 22 Flexible shaft 23 Flexible transmission case 24 Elevator 25 Support rod 26 Support cylinder 27 Handle support rod 28 Handle rod 29 Compression spring 30 Rotating support 31, 32 Wire roller 33 wire reel 34 wire 35 traveling clutch lever 36 throttle lever 37 cutting blade clutch lever 38 blower clutch lever 39 spring 40 steering handle 41 knob 42 tea leaf accommodating bag 43 mounting pipe

Claims (1)

[Claims] 1. A self-propelled type in which a traveling unit that travels between the ridges of a tea tree ridge cantileverly supports a tea garden management machine that moves on the ridges of the tea tree ridge to perform various operations such as plucking and pruning tea leaves. In the tea garden management machine of the above, the traveling unit has front and rear wheels separated from each other in a front and rear direction on a body frame extending in the front-rear direction, and the rear driving wheel has a rubber crawler wound between a pair of front and rear wheels. It is composed of a low-rotation endless track type, a power source is arranged above the front of the body frame, and a transmission system for receiving power from the power source is arranged between the front wheels and the driving rear wheels. A self-propelled tea garden management machine, characterized in that it is configured to transmit the driving force from the transmission system to the rear wheels.