JPH08256523A - Under-the-shelf work vehicle - Google Patents

Abstract

(57) [Summary] [Purpose] To provide an under-the-shelf work vehicle capable of performing general traveling operations with feet while continuing the under-the-shelf manual work, and further capable of turning on the spot to improve work efficiency. [Structure] Drive wheels 2a and 2b which are provided on both left and right sides of a front portion or a rear portion of a vehicle body floor 1 and are capable of independently advancing and retreating respectively, and the drive wheels 2a and 2b are provided on opposite sides in the front-rear direction. A hand-operated hand switch 8 for controlling the left and right drive wheels 2a, 2b, and a foot switch 10a for one foot operation for individually controlling the drive wheels 2a, 2b. 10b are provided on the left and right sides of the vehicle body floor 1, and in-situ turning switches 11a and 11b which can be operated by a foot are further provided.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention is intended for general running operation and further for turning on the spot while continuing manual operations such as pruning, pollination, fruit picking, bagging and harvesting in orchards such as vineyards and pears. The present invention relates to an under-shelf work vehicle capable of improving work efficiency.

[0002]

2. Description of the Related Art Various kinds of work conventionally carried out in orchards such as vineyards and pear gardens, such as pruning, pollination, fruit picking, bagging and harvesting, are all carried out under shelves. , The worker faces the face upward, raises his hands above the shoulders, and is in an unreasonable work posture, such as being in the middle waist, which places a heavy burden on the worker's neck, shoulders, waist and legs. The work was extremely fatigued.

Therefore, the physical burden on the operator is eliminated,
Various electric work vehicles and the like have been provided to reduce the degree of fatigue (see, for example, Japanese Utility Model Laid-Open No. 6-33407). These under-shelf work vehicles improve the work posture by allowing the worker to work while sitting on the seat provided on the upper surface of the vehicle body floor, and facilitate the operation such as forward, backward, and turning. I am trying to

[0004]

In the conventional under-shelf work vehicle described above, since the worker can work while sitting on the seat, the burden on the worker's neck, shoulders, waist and legs is eliminated. This reduces the fatigue level. However, they are generally accompanied by a steering wheel operation, and in the case of forward movement, backward movement, turning, etc., manual work must be stopped, and turning on the spot is difficult. .

That is, in a conventional four-wheeled vehicle or a three-wheeled vehicle type in which one wheel is provided with a handle, when turning on the spot, the turning radius becomes large, and the turning radius becomes large, the position is displaced, and the turning is performed later. The position had to be modified significantly, which required time and labor, and there was a problem in terms of work efficiency.

The present invention has been made in view of the above circumstances, and provides an under-the-shelf work vehicle capable of performing general traveling operations and further turning on the spot while continuing the under-the-shelf manual work, thereby improving work efficiency. The purpose is to provide.

[0007]

In order to solve the above-mentioned problems, the present invention provides a drive wheel which is provided on both the left and right sides of the front part or the rear part of a vehicle body floor and is capable of independently controlling forward and backward movements. The wheel has a directional wheel provided on the opposite side in the front-rear direction, a hand operation switch for controlling the left and right drive wheels, and a foot switch for one foot operation for individually controlling the drive wheel. Is provided on the left and right sides of the vehicle body floor, and is further provided with an in-situ turning switch that can be operated by a foot, and preferably, there are two in-situ turning switches for turning right and turning left. It was done.

[0008]

The under-shelf work vehicle of the present invention is provided with drive wheels 2a, 2b which are provided on the left and right sides of the front portion or rear portion of the vehicle body floor 1 and can be independently controlled to move forward and backward.
Since the directional wheel 3 is provided on the side opposite to the a and 2b in the front-rear direction, unlike a four-wheeled vehicle or a three-wheeled vehicle having one wheel with a handle, it is possible to turn on the spot at almost a fixed position.

Furthermore, the one-touch operation in-situ turning switch 1 for rotating the left and right drive wheels 2a, 2b, which can be independently controlled forward and backward, in opposite directions.
Since the left and right sides 1a and 11b are separately provided and the on-the-spot turning switches 11a and 11b can be operated by the feet, it is possible to freely turn the shelves in a direction easy to work while continuing the manual work under the shelf. Helps improve efficiency.

Further, the foot switch 10a is used for normal running.
Since it is possible to perform the operation 10b, the movement under the shelf can be performed while performing the manual work, and the work efficiency can be improved.

[0011]

An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a plan view showing an under-shelf work vehicle according to an embodiment of the present invention, and FIG. 2 is a side view thereof.

As shown in the drawings, the under-the-shelf work vehicle of this embodiment has drive wheels 2a, 2b which can be independently moved forward and backward on both left and right sides below the front part of a vehicle body floor 1.
Is provided, and one caster-type directional wheel 3 is provided substantially in the center below the rear portion of the vehicle body floor 1. Of course, the drive wheels 2a, 2b and the directional wheel 3 may be provided in the front-rear direction, or two directional wheels may be provided on the left and right sides. In the figure, 4 is a battery.

The drive wheels 2a and 2b respectively have DC motors M1 and M2 with a drive-release brake that are driven by the battery 4 on their axles, and are independently forward and reverse (forward / reverse rotation). ) And braking control are possible.

In the figure, reference numeral 6 denotes a driver's seat, the details of which are not shown, but columns 5a and 5b connected to the lower surface thereof.
Is pierced through a support cylinder 7 which is supported substantially at the center of the vehicle body floor 1 so that the height can be adjusted.

Further, although not shown in detail, a support rail or the like is bridged over the upper ends of the columns 5a and 5b, and the seat 6 is slidably and fixedly engaged on the support rail in the front-rear direction. The seat 6 may be configured to be movable in the front-rear direction according to the physical constitution of the worker. It is preferable that the drive wheels 2a and 2b are located directly below the manual work position as shown in FIG. 2 because the work position does not change even during turning.

In the figure, reference numeral 8 is a hand switch, which is provided on a post 12 which is located close to one side of the seat 6, and is, for example, a multi-directional operation switch that moves forward and backward as well as the motors M1 and M2 and drive wheels. 2a and 2b are controlled to have a steering operation function similar to that of a conventional handle, and further, one driving wheel 2a is rotated in the forward direction and the other driving wheel 2b is stopped or rotated in the backward direction. It has a function of freely controlling the traveling of the aircraft such as controlling.

In the figure, 10a and 10b are foot switches for general driving, which are provided on the upper surface of the vehicle body floor 1 on both the left and right sides of the driver's footrest position so as to correspond to the drive wheels 2a and 2b. Is configured.

That is, the foot switches 10a, 10b
Is for operating the drive wheel 2a or 2b on each side with the left and right feet when the operator is working and both hands are occupied and the hand switch 8 cannot be operated. It is possible to depress forward and backward with the central portion as a fulcrum, and to depress the front portion to move forward, to depress the rear portion to move backward and to brake at the neutral position. The steering operation can be performed in the same manner as the hand switch 8 by the stepping condition of the left and right foot switches 10a and 10b. One driving wheel 2a is rotated in the forward direction and the other driving wheel 2b is stopped or retracted. It is also possible to turn on the spot by controlling the rotation to.

Further, in the center between the left and right foot switches 10a, 10b on the upper surface of the vehicle body floor 1, the foot switch 8 and the foot switches 10a, 10b are prioritized during operation, and operated with one foot while sitting on the seat 6. Possible right and left individual in-situ turning switches 11a, 11b are provided.

In the illustrated embodiment, the in-situ turning switches 11a and 11b are two, that is, the right turning switch 11a and the left turning switch 11b, but may be one. However, it is more convenient in terms of work to provide the right side and the left side separately.

In the above structure, when the right turning switch 11a is operated with the right foot, the drive wheel 2a on the right side in the traveling direction is rotated in the backward direction, and the drive wheel 2b on the left side in the traveling direction moves forward at the same speed. Is rotated in the direction. Therefore, a right turn is made at a substantially fixed position around the bisector P of the axle line OO connecting the left and right drive wheels 2a, 2b. Further, when the left turning switch 11b is operated with the left foot, the drive wheels 2a and 2b are respectively rotated in the opposite directions, and the left turning is performed at a substantially fixed position.

Such in-situ turning can be performed also by the hand switch 8 and the left and right foot switches 10a, 10b. In the case of the operation by the hand switch 8, at least one hand stops the work. In addition, in the case of the operation by the left and right foot switches 10a, 10b, it is necessary to control the both feet evenly while performing a manual operation under the shelf, which causes a problem that a positional deviation easily occurs.

Therefore, in the present embodiment, the one-touch operation in-situ turning switch 11 for turning in advance at a substantially fixed position is used.
Since the left and right dedicated a and 11b are provided respectively, it is possible to turn on the spot while continuing the under-shelf manual work with both hands, and it is possible to improve the work efficiency.

In the present embodiment, although not shown in detail, the hand switch 8, foot switch 10a,
The motor M1, M2 is provided with an electromagnetic brake that is released when the motor M1, M2 is driven by the 10b and the in-situ turning switches 11a, 11b.
The operator operates the hand switch 8, foot switches 10a, 1
0b and the in-situ turning switches 11a, 11b, when the hands or feet are released, the switches 8, 10a, 1
The motors M1, M controlled by 0b, 11a, 11b
The electromagnetic brake acts on the drive wheel 2 to stop the drive wheels 2a and 2b. In the figure, reference numeral 13 is a tilting prevention rod that comes into contact with the ground when the vehicle body tilts during turning or running. Further, in the present embodiment, the priority order during operation is predetermined among the three types of switches, the hand switch 8, the foot switches 10a and 10b, and the in-situ turning switches 11a and 11b. That is, even if the foot switches 10a, 10b or the hand switch 8 is operated while the in-situ turning switches 11a, 11b are being operated, the foot switches 10a, 10b and the hand switch 8 are also operated.
Does not work, and the foot switches 10a, 10
Even if the hand switch 8 is operated during the operation of b, the priority order is set so that the hand switch 8 does not work, and it is configured so that no stray or failure occurs.

[0025]

As described above, according to the present invention, it is possible to perform a general traveling operation by a foot and further a turn on the spot while continuing the manual work under the shelf, so that the work efficiency can be improved.

[Brief description of drawings]

FIG. 1 is a plan view showing an under-shelf work vehicle according to an embodiment of the present invention.

FIG. 2 is a side view thereof.

[Explanation of symbols]

 1 Body Floor 2a Drive Wheel 2b Drive Wheel 3 Directionally Free Wheel 8 Hand Switch 10a, 10b Foot Switch 11a, 11b In-Situ Turn Switch

Claims (2)

[Claims] 1. Drive wheels (2a, 2b) provided on both left and right sides of a front portion or a rear portion of a vehicle body floor (1) and capable of independently controlling forward and backward movements, and the drive wheels (2a, 2).
Directional wheel (3) provided on the opposite side to the front and rear in b)
And a hand switch (8) for manual operation for controlling the left and right drive wheels (2a, 2b), and the drive wheel (2).
a, 2b) has foot switches (10a, 10b) for operating one foot which are individually controlled on the left and right, on the left and right sides of the vehicle body floor (1), and in-situ turning switches (11a, 11b) which can be further operated by feet. An under-the-shelf work vehicle characterized by being provided. 2. The in-situ turn switch for turning right (1
2. The under-shelf work vehicle according to claim 1, wherein there are two, 1a) and a left turn (11b).