JPH0718523U - Front wheel mechanism of semi-automatic plucking machine - Google Patents

Abstract

(57) [Summary] [Purpose] It is an object of the present invention to provide a semi-self-propelled plucking machine having excellent running stability and work stability. [Structure] The structure of the front wheel mechanism 5 is such that front wheel receivers 6, 6 are fixed to the left and right of the front end of the traveling device 1, and casters 7, 7 are rotatably supported by the front wheel receivers 6, 6, respectively. Front wheels 8, 8 having a diameter of about Φ200 are rotatably attached to 7, 7. Also, the casters 7, 7
The sprocket 9, 9 is fixed to the upper part of the spindle, respectively, and the two sprockets 9, 9 are connected by a chain 10 as shown in FIG. And the front wheels 8,8
Are arranged so as to fit within the lateral width (30 cm) of the traveling device 1.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a front wheel mechanism of a traveling device that makes a semi-self-propelled plucking machine self-propelled, and more particularly to a front wheel mechanism of a semi-self-propelled plucking machine having two front wheels.

[0002]

[Prior art]

 Conventionally, as a cultivation management work machine for tea tree ridges planted in rows, a two-person plucking machine that can be carried by two people, or one or two people with one side of the plucking device supported by a traveling device. There are known semi-self-propelled plucking machines that work in the field and fully self-propelled plucking machines that work by one person.

The applicant previously proposed a semi-self-propelled plucking machine shown in FIG. 4 as a tea leaf cultivation management work machine in Japanese Patent Application No. 5-88482. In FIG. 4, this semi-self-propelled plucking machine is composed of a traveling device a having a narrow width and a long length in the vertical direction, and a pear cutting machine b supported by the traveling device a so as to be adjustable in vertical movement and adjustable in a horizontal tilt angle. Has been done. In the traveling device a, a caster-like front wheel c is pivotally supported at the front part, and a rubber track d is provided at the rear part of the traveling device a to provide an endless track belt having a low height. Then, the rubber crawler d is driven by the power of the engine e arranged above the traveling device a, so that the traveling device a is allowed to travel by itself. In addition, a stand f that supports the semi-self-propelled plucking machine is provided in the traveling device a. An auxiliary handle g is provided on the cutting machine b, and a second operator who operates the auxiliary handle g and a first operator who operates the traveling device a move together to move the half handle. Plucking work is done with a self-propelled plucking machine.

[0004]

[Problems to be solved by the device]

 By the way, in the case of the semi-self-propelled plucking machine, only one front wheel c 1 for traveling the traveling device a is provided at the center of the lateral width of the traveling device a. Therefore, since the semi-self-propelled plucking machine is driven by the front wheel c and the endless track band equipped with the rubber crawler d having a required width, the front wheel c may fall into a recess while running. When the caster-shaped front wheels c are turned sideways during turning, the balance of the entire semi-self-propelled plucking machine becomes unstable and the operator is burdened with that weight, and in the worst case, falls. Cause Further, when the worker temporarily stops the work and leaves the semi-self-propelled plucking machine, if the worker forgets to stand the stand f, the semi-self-propelled plucking machine may fall down.

As a configuration for solving the above-mentioned inconvenience, it is conceivable that two front wheels are provided, each of which is separately rotatably supported by a traveling device to improve the stability of the semi-self-propelled plucking machine. In this configuration, the width of the traveling device is limited to a certain value (about 30 cm) due to the balance with the furrows (about 30 cm). Therefore, when tires with a diameter (Φ200) suitable for running are used, they will be Tires interfere. Therefore, in order to avoid this interference, the tire must be arranged outside the width of the traveling device in order to reduce the diameter of the tire or ensure a span between the tires.

However, if the diameter of the tire is made small (Φ200 or less), the running property of the semi-self-propelled plucking machine is deteriorated, and if the span between the tires is secured, the tire protruding from the running device becomes a tea tree. Derives the problem of damaging the.

The present invention has been devised to solve the above-mentioned problems, and it is a semi-self-propelled plucking machine that stably travels in a narrow ridge without damaging the tea plant and has excellent mobility such as turning. The purpose is to provide a machine.

[0008]

[Means for Solving the Problems]

 In order to achieve the above-mentioned object, the present invention provides a traveling device having a narrow lateral width which is self-propelled between one of the ridges by sandwiching the tea tree ridges planted in rows, and a tea tree ridge supported by the traveling device so as to be vertically movable. And a pruning device for moving the upper part of the pruning device, and the traveling device is equipped with a front wheel mechanism and a rear wheel mechanism driven by power, and is steered by a first worker who walks in one of the ridges. In a semi-self-propelled plucking machine in which a second worker walking in the other ridge supports and moves the handle member provided on the top side of the device in the ridge direction, wherein the front wheel mechanism of the traveling device is: I configured it as follows: That is, the front wheel mechanism is a two-wheel mechanism in which rotatable caster-shaped front wheels are respectively arranged on the left and right sides within the lateral width of the traveling device, and the two casters are connected by a chain via a sprocket. However, it is characterized in that the two front wheels are rotated in conjunction with each other.

[0009]

[Action]

 Based on the above configuration, since the traveling device has the front wheel mechanism having two front wheels and the rear wheel mechanism, it is supported at three points on the traveling surface, and the center of gravity balance of the semi-self-propelled plucking machine is stable. Further, since the front wheel mechanism and the rear wheel mechanism are arranged within the lateral width of the traveling device, when traveling through the ridges, it is possible to stably drive without damaging the tea plants planted on the left and right of the ridges. . Further, when turning, the two front wheels rotate in conjunction with each other, so that the tires do not interfere with each other and they turn stably, which puts a heavy load on the operator of the semi-propelled plucking machine. Disappears.

[0010]

【Example】

 An embodiment of the present invention will be described below with reference to the drawings. Fig. 1 is a side view of the semi-self-propelled plucking machine, and Fig. 2 is a front view of the semi-self-propelled plucking machine. Reference numeral 1 is introduced into one of the ridges of the tea tree ridges planted in a row and has a width of 30 cm. It is a traveling device that is narrow and long in the longitudinal direction. The traveling device 1 is equipped with a rubber crawler 2 with a width of 30 cm or less at the rear, and is composed of an endless track 3 with a low height (about 200 mm). The rear wheel mechanism 4 is provided, and the front wheel mechanism 5 is provided at the front portion.

Here, in the structure of the front wheel mechanism 5, front wheel receivers 6, 6 are fixed to the left and right of the front end of the traveling device 1, and casters 7, 7 are rotatably supported on the front wheel receivers 6, 6, respectively. The front wheels 8, 8 having a diameter of about Φ200 are rotatably attached to the casters 7, 7. Further, sprockets 9, 9 are fixed to the upper portions of the support shafts of the casters 7, 7, respectively, and the two sprockets 9, 9 are connected by a chain 10 as shown in FIG. The front wheels 8 and 8 are arranged so as to fit within the lateral width (30 cm) of the traveling device 1.

An engine 11 is mounted above the traveling device 1, and power from the engine 11 is input to a hydraulic continuously variable transmission (HST) 13 via a belt transmission system 12, The power output after being shifted by the hydraulic continuously variable transmission (HST) 13 is transmitted to the drive wheel 3a provided in the above-mentioned endless track zone 3 via the belt transmission system 14 and the chain transmission system 15, The rubber crawler 2 is driven so that the traveling device 1 can be self-propelled.

With the above-described structure, the traveling device 1 travels by the endless track 3 equipped with the rubber crawler 2 having a width of 30 cm or less and the two front wheels 8, 8 rotatably connected to each other by the chain 10. The traveling device 1 travels parallel to the ground contact surface due to the height of the endless track zone 3 (about 200 mm) and the diameter of the front wheels (about Φ200).

The hydraulic continuously variable transmission 13 is provided with a neutral lever 16 so that it can be turned on and off. A steering handle 17 provided on the front side above the traveling apparatus 1 is provided with a traveling operation lever 18, which switches the hydraulic continuously variable transmission 13 via a wire 18a to move forward, reverse and shift. The operation is designed to be performed. Further, the traveling device 1 is provided with a stand 19 that supports the traveling device 1 so as to be accommodated therein.

A pillar frame 20 is erected at the center of the traveling device 1 in the front-rear direction, and an elevating body 21 having rollers is mounted on the pillar frame 20 by an up-down adjusting mechanism 22. It is provided so that it can move up and down. Then, the second operator, who is supported by the elevating body 21 through the support rod 23 to support the plucking device 24 and supports the auxiliary handle 25 attached to the plucking device 24, moves to the two front wheels 8, 8 and the endless track. The belt 3 is located between one ridge that runs on the ground and the other ridge that faces the tea tree ridge, and the plucking operation is performed while the traveling device 1 is traveling.

Next, the operation of the present invention configured as described above will be described. The traveling device 1 travels through one of the ridges of the tea tree ridges planted in a row by the operation of the first operator, and the auxiliary handle 25 provided on the plucking device 24 connected to the traveling device 1 is attached to the ridge of the tea tree ridge. A second worker located in the other ridge supports and works while moving the traveling device 1. At that time, since the traveling device 1 travels with the two front wheels 8 and 8 and the rubber crawler 2 having a required width as the ground contact surface, the stability of the entire semi-self-propelled plucking machine is improved.

When the traveling device 1 travels straight through the ridges of the tea tree ridge, the two front wheels 8 and 8 provided at the front part of the traveling device 1 and the rubber crawler 2 having a required width at the rear part are traveling. Since it fits within the width of the device 1, the traveling device 1 travels stably without damaging the tea plant.

Further, when the traveling device 1 turns from one tea tree ridge to the next tea tree ridge, the two front wheels 8, 8 are connected by the chain 10 via the casters 7 and the sprockets 9. , 8 rotate at the same angle at the same time. Therefore, the traveling device 1 stably turns without the front wheels of each other interfering with each other.

Although the sprocket and the chain are used as the connecting means for the two front wheels in the above embodiment, the present invention is not limited to this, and other connecting means such as a gear wheel may be used.

[0020]

[Effect of device]

 As described above, according to the present invention, it is possible to stably travel in narrow ridges without damaging the tea plant, and it is possible to work using a traveling device with an excellent balance of the center of gravity, so that one person can work on level ground. Also, there is no need to stand when leaving the machine due to temporary interruption of work. Further, since the vehicle turns stably during turning, the weight load on the worker is eliminated and the workability is improved.

[Brief description of drawings]

FIG. 1 Side view of a semi-self-propelled plucking machine

FIG. 2 is a front view of a semi-self-propelled plucking machine.

FIG. 3 is a schematic top view of the traveling device.

FIG. 4 is an explanatory diagram of a conventional example.

[Explanation of symbols]

 1 Traveling Device 2 Rubber Crawler 3 Endless Track Band 3a Drive Wheel 4 Rear Wheel Mechanism 5 Front Wheel Mechanism 6 Front Wheel Receiver 7 Casters 8 Front Wheel 9 Sprocket 10 Chain 11 Engine 12 Belt Transmission System 13 Hydraulic Continuously Variable Transmission 14 Belt Transmission System 15 Chain Transmission system 16 Neutral lever 17 Steering handle 18 Traveling lever 18a Wire 19 Stand 20 Strut frame 21 Elevating body 22 Vertical adjustment mechanism 23 Support rod 24 Plucking device 25 Auxiliary handle

Claims (1)

[Scope of utility model registration request] 1. A traveling device having a narrow lateral width, which runs on its own ridges by sandwiching tea tree ridges planted in rows, and a plucking device which is supported by the traveling device so as to be movable up and down and moves on the tea ridges. And a traveling device equipped with a front-wheel mechanism and a rear-wheel mechanism driven by power to walk on one of the ridges.
In a semi-self-propelled plucking machine that is operated by the operator of, and has a handle member provided on the top side of the plucking device supported by a second worker who walks in the other ridge, and moves in the ridge row direction, The front wheel mechanism is a two-wheel mechanism in which rotatable front wheels in a caster shape are respectively arranged on the left and right sides in the lateral width of the traveling device, and the two front wheels are connected by a connecting means.
The front wheel mechanism of the semi-self-propelled plucking machine, characterized in that the two front wheels rotate together.