JPH0613615Y2 - Ridge work vehicle - Google Patents

Description

[Detailed Description of the Invention] [Industrial field of application] The present invention is to self-propelled across the ridge by the power of the mounted engine, thinning the crops with the worker sitting on a work chair, seedling The present invention relates to a furrow work vehicle for carrying out various operations such as transplantation.

[Conventional technology and its problems]

The work of thinning out crops, transplanting seedlings, and the like is performed by the worker moving laterally while keeping the middle waist, or moving forward or backward in a forward tilted position across the ridge.

In any of the work postures, continuous thinning of crops, transplanting seedlings, etc. for a long period of time is considered to be one of the painful agricultural works, which is a burden on the waist.

The present invention is capable of performing various operations such as thinning out crops and transplanting seedlings while sitting on a self-propelled work vehicle, thereby freeing workers from the above distressed agricultural work and improving work efficiency. It was made for the purpose.

[Means for solving problems]

According to the present invention, a work chair is attached to a frame on which an engine is mounted, and a pair of wheel frames having front wheels and rear wheels attached to front and rear ends are mounted on both sides of the frame through a wheel width adjusting mechanism, A footrest plate is attached to each wheel frame in front of the front wheels, and the front end of each footrest plate is connected by a gate-shaped pulling arm, so that the pair of footrest plates, the work chair, and the chair are pulled. A furrow work vehicle comprising a wheel drive mechanism for forming a working space between the upper arm and the wheel and transmitting the rotation of the engine to either the front wheel or the rear wheel for driving rotation.

[Function of device]

The ridge work vehicle is self-propelled at low speed while straddling the ridge by the power of the mounted engine. Since the pair of front wheels and the pair of rear wheels are not connected by the axle, the ridges are not broken even when the work vehicle travels.

When the front wheel and the rear wheel are located between the ridges and the ridge work vehicle straddles the ridges, the ridges are formed in the work space formed between the pair of footrests, the work chair and the lifting arm. It will be in a complicated state.

A worker sits on a work chair of a self-propelled ridge work vehicle, puts both feet on a footrest plate attached to each frame, and performs various work in a work space portion.

To change the ridge on which the work vehicle reaches the ridge to perform the work, the worker once gets out of the chair, pulls up the front wheel of the work vehicle by the pulling arm, and in this state the work vehicle is turned 180 °.
Convert it.

〔Example〕

In FIGS. 1 to 3, the engine 1 and the speed reducer 2 are mounted on a frame A having a square angle. A rotary shaft 4a and a fixed shaft 5a are provided at the front and rear ends of the wheel frame 3, respectively.
The front wheel 4 and the rear wheel 5 are attached via the. Front wheel 4
The rotary shaft 4a is driven to rotate.

Inside the wheel frame 3, a pair of assembly members 6 made of angular angles are fixed in the horizontal direction at predetermined intervals, and the assembly members 6 form the frame A. It is fitted into the assembling member 7 consisting of.

The work chair 8 is integrally attached to the frame A.
The work chair 8 is fixed to the chair support 9 and
A pair of height adjusting rods 11 are provided upright at the rear end portion, and a rod insertion member 12 formed of a square angle is vertically fixed to the assembly member 7 forming the frame A. A height adjusting rod 11 is inserted through the two, and a pin 13 connects the both 11 and 12 to determine the height of the work chair 8 with respect to the frame A.

By fitting the assembly member 6 of the wheel frame 3 into the assembly member 7 of the frame A, the wheel frames 3 are mounted on both sides of the frame A, respectively.

The wheel width W of the front wheels 4 and the rear wheels 5 is adjusted by the wheel width adjusting mechanism B.

As shown in detail in FIGS. 8 and 9, the wheel width adjusting mechanism B includes a male screw 14 for adjusting the wheel width attached to the wheel frame 3 and a tubular body 15 fixed to the frame A. Composed of and. The male screw 14 for adjusting the wheel width has the collar portion 1 thereof.
It is immovable in the lengthwise direction by means of the head 4a and the head 14b, and is rotatably attached to the wheel frame 3. Wheel width adjusting male screw 14 and female screw portion 1 of the cylinder body 15
When the wheel width adjusting male screw 14 is rotated in a predetermined direction by the handle 16 attached to the head portion 14b of the wheel width adjusting male screw 14 which is screwed to the wheel frame 3a with the wheel frame 3a. Move toward and away from each other, thereby defining the wheel width W.

As shown in FIGS. 1, 2, and 4, a footrest plate 18 is provided in an extended portion of the wheel cover 17, and the footrest plate 18 is located in front of the front wheel 4, and It is mounted with a slight upward inclination. The wheel cover 17 is attached to the wheel frame 3 via attachment pins 19a, 19b, 19c.

A pull-up arm 21 having three types of pipes connected in a gate shape is attached to the tip of the footrest plate 18. The pull-up arm 21 is for pulling up the front wheel 4 of the furrow work vehicle, and is composed of three types of pipes, so that the width thereof changes according to the wheel width W. ing. At one rising edge of the pulling arm 21, the pulling lever 2
2 is attached. As shown in FIG. 5, since the pull-up lever 22 is attached to the fixed shaft 24 via the eccentric cylinder 23, it does not rotate beyond the position shown by the chain double-dashed line in the figure.

A working space S is a space formed by the pair of footrest plates 18, the work chair 8 and the pulling arm 21.

The front wheels 4, which are the driving wheels, are driven and rotated by the wheel drive mechanism C.

In the wheel drive mechanism C, as shown in detail in FIG. 10, the drive shaft 25 of the speed reducer 2 is a spline shaft 25a, and a spline shaft 25a is attached to a connecting shaft 27 supported by the wheel frame 3. The spline groove 27 a is formed, and the spline shaft 25 a, which is the drive shaft 25 of the speed reducer 2, is fitted into the spline groove 27 a of the connecting shaft 27. In this way, the reason why the spline is used for the drive shaft 25 of the speed reducer 2 is to allow the driving force to be transmitted even if the wheel width W changes.

The rotating shaft 4a of the front wheel 4 is supported by the wheel frame 3 via bearings 28 and 29, and the rotating shaft 4a is attached to the boss portion 4b of the front wheel 4.
Is inserted and both 4a and 4b are connected via a pin 4c.

The chain gear 31 attached to the connecting shaft 27 and the rotary shaft 4 of the front wheel 4
A chain 33 is hooked between the chain gear 32 attached to a and the rotation of the drive shaft 25 of the reduction gear 2 is transmitted to the rotary shaft 4a of the front wheel 4 via the connecting shaft 27 and the chain 33. ing. Therefore, the wheel frame 3 also serves as a chain case.

In FIGS. 1 and 2, 34 is a clutch for cutting off the transmission of power to stop the working vehicle that is running, and 35 is a shift box.

When performing various operations such as thinning crops and transplanting seedlings using this ridge work vehicle, the wheel width W is adjusted by the wheel width adjusting mechanism B in accordance with the width of the ridges D.

As shown in FIG. 3 and FIG. 6, the ridge working vehicle is self-propelled at a low speed while straddling the ridge D by the power of the mounted engine 1 and moves forward. Since the pair of rear wheels 5 are not connected by the axle, the ridge D is not broken even when the ridge working vehicle travels. In a state in which the front wheel 4 and the rear wheel 5 are located between the ridges D and the ridge work vehicle straddles the ridges D, the work formed by the pair of footrest plates 18, the work chair 8 and the pulling arm 21. The ridge D enters between the space portions S.

A worker sits down on a work chair 8 of a self-propelled furrow work vehicle, and has both feet attached to each wheel frame 3
Place the work space on the work space S while keeping it leaning forward and sitting down.
Will perform various operations such as thinning out the crop E. For example, when it is desired to temporarily stop the work vehicle during work, such as when the amount of thinning is large, the clutch 34 is stepped on by the foot placed on the footrest plate 18 to intermittently drive the furrow work vehicle. You can do it.

To change the ridge D, where the work vehicle reaches the ridge and performs work,
The operator descends from the chair 8 and, as shown in FIG. 7, holds the pulling arm 21 with one hand and the pulling lever 22 with the other hand to pull up the front wheel 4, which is the driving wheel, and keep it as it is. In this state, the work vehicle is turned 180 ° at the ridge end to perform the next ridge D work. Since the center of gravity of the ridge work vehicle is near the rear wheel 5, the work vehicle can easily turn.

It is safe to move the furrow work vehicle forward as described above, because it is possible to perform various works while looking ahead.
It is also possible to work backwards. When the ridge work vehicle is advanced to perform various works, the gate-shaped pulling arm 2
1 acts as a safety fence.

[Effect of device]

According to the present invention, a footrest plate is attached to each wheel frame in front of a front wheel, and the tip end of each footrest plate is connected by a pulling arm, so that a pair of footrest plates, work chairs, and chairs can be connected. A working space is formed between the upper arm and the ridges enter into the working space during work.Therefore, perform various operations such as thinning out crops and transplanting seedlings while sitting on a work chair. At the ridge end, the work vehicle can be easily turned by pulling up the front wheel by the pulling arm.

For this reason, the operator can be relieved from the above-mentioned various operations that have been conventionally regarded as painful, and the operation can be performed efficiently.

[Brief description of drawings]

FIGS. 1, 2 and 3 are a side view, a plan view and a front view of a furrow work vehicle according to the present invention, and FIG. 4 is a partial perspective view showing a mounting state of a footrest plate 18, Figure 5 shows
Sectional drawing of the part of the pull-up lever 22, FIG. 6 is a perspective view in a working state, FIG. 7 is a side view of a state in which the ridge working vehicle is turned at the ridge end, and FIG. XX line enlarged sectional view, FIG. 9 is an enlarged sectional view of a portion of the wheel width adjusting mechanism B, and FIG. 10 is a diagram showing a wheel drive mechanism C. [Description of Signs of Main Parts] A: Frame, B: Wheel Width Adjustment Mechanism C: Wheel Drive Mechanism, D: Ridge E: Crop, S: Working Space W: Wheel Width, 1: Engine 3: Wheel Frame, 4: front wheel 5: rear wheel, 8: work chair 18: footrest plate, 21: pulling arm

Claims (3)

[Scope of utility model registration request] 1. A work chair is attached to a frame on which an engine is mounted, and a pair of wheel frames having front wheels and rear wheels attached to front and rear ends are attached to both sides of the frame via a wheel width adjusting mechanism. , A footrest plate is attached to each of the wheel frames in front of the front wheels, and the front end portion of each footrest plate is connected by a gate-shaped pulling arm so that the pair of footrest plates and the work chair are connected. A furrow working vehicle comprising a wheel drive mechanism for forming a working space between the pulling arm and transmitting the rotation of the engine to either the front wheel or the rear wheel to drive and rotate the wheel. 2. The furrow work vehicle according to claim 1, wherein the front wheels are drive wheels. 3. A furrow work vehicle according to claim 1, wherein a work chair is attached to a frame so as to be able to move up and down.