JPH0143985Y2 - - Google Patents

Description

[Detailed description of the invention] Industrial field of application This invention relates to a traveling device for a management work machine that performs tilling work, ridge-raising work, soil-filling work, etc.

Conventional technology Conventionally, in the case of this type of management work machine, it was necessary to drive between narrow rows of densely planted plants to perform intercultivation, weeding, etc., so the work machine was towed by a single-wheel running device. was going there.

Problems that the invention aims to solve This invention aims to prevent the deterioration of running performance due to the lack of traction that occurs during heavy work such as plowing highly viscous soil and ridge-raising work in conventional single-wheel management work machines. It is something to do.

Means to solve the problem A working machine has a prime mover 2 and a control handle 3 in front and rear of a gearbox 1 in the center of the machine, and a working machine that is installed at the bottom of the gearbox 1 so as to face rearward and downward, and has a tiller wheel 4, etc. mounted on its lower end. A transmission case 5 is attached thereto, and a wheel drive case 9 with driving wheels 7, 8 mounted on both front and rear ends is rotatably attached to the lower part of the transmission case 6, which is diagonally disposed forward and downward from the gearbox 1. This is a configuration of a traveling device such as a management work machine that is capable of transmitting power.

Function When performing work with relatively low running resistance such as normal plowing work or weeding work, the wheel drive case 9 provided at the bottom of the transmission case 6 can be rotated and installed diagonally.
Work is performed with only one side of the drive wheels 7 and 8 mounted on the front and rear ends of the wheel drive case 9 in contact with the ground. In this case, although the driving traction force is relatively small, the operability when turning the aircraft is good and efficient work can be performed.

In addition, when performing heavy work such as plowing highly viscous soil or ridge work, the wheel drive case 9 provided at the bottom of the transmission case 6 is rotated to bring both the front and rear drive wheels 7 and 8 into contact with the ground. Do the work. Therefore, a strong traction force is obtained by the front and rear drive wheels 7, 8, and heavy work can be performed efficiently.

In addition, if you want to adjust the vehicle height according to the work machine to which it is attached, you can change the vertical position of the drive wheels 7 or 8 by rotating the wheel drive case 9 and changing the inclination angle with respect to the transmission case 6. Make adjustments.

Effects of the invention Since this invention is constructed as described above, the driving wheels 7 and 8 are installed at the front and rear of the transmission case 6.
By a simple operation of appropriately rotating and fixing the wheel drive case 9 that supports the wheel, one or both wheels of the drive wheels 7 and 8 can be brought into contact with the ground and driven and towed at the same time, allowing both light and heavy work to be carried out efficiently. It is something that can be accomplished.

Furthermore, even if it is necessary to adjust the vehicle height according to the work equipment to be attached, the desired vehicle height can be obtained by simply rotating the angle of inclination of the wheel drive case 9 relative to the transmission case 6. be.

Embodiment In the illustrated example, the management work machine has an abutment 10 protruding forward from a gearbox 1 provided in the center of the machine body, a prime mover 2 mounted on the abutment 10, and an upper rear part of the gearbox 1. A control handle 3 is attached to the.

The work equipment transmission case 5 is attached to one rear side of the gearbox 1 and is installed obliquely toward the rear and downward, and has a drive shaft 11 protruding from both sides of the lower part.
The tiller wheels 4, 4 are fitted into the 11 and fixed with bolts 12.

Reference numeral 13 denotes an auxiliary work equipment mounting frame, which is attached to the upper part of the work equipment transmission case 5, extends rearward, and has a resistance rod 14, a soil plate, etc. attached to the rear end thereof in a removable manner.

The transmission case 6 is attached to one side of the front part of the gearbox 1 and is installed obliquely toward the front and downward, and a wheel drive case 9 on which drive wheels 7 and 8 are mounted on shafts 15 and 15 in the front and rear is rotatably provided at the lower part. 16 shafts are mounted on the shaft. That is, the output sprocket 18 driven by the chain 17 inside the transmission case 6 extends the shaft 16 outside the transmission case 6, and the wheel drive case 9 is rotatably supported on the other end of the shaft 16. Connect the protruding pin 19 on one side of the wheel drive case 9 to the transmission case 6.
The wheel drive case 9 is configured to be rotatable by being fixed with a wing nut 21 at an appropriate position in a long hole (not shown) of a support plate 20 fixed to the side.

Note that the distance between the front and rear drive wheels 7, 8 and the shaft 16, which is the center of rotation of the wheel drive case 9, is such that the distance between the rear drive wheels 8 and the shaft 16 is longer.

Sprockets 22, 22 are fixed to the shafts 15, 15 of the front and rear drive wheels 7, 8, respectively, a chain 23 is wound between the sprockets 22, 22, and a sprocket 24 fixed to the other end of the shaft 16 is attached. It is configured to mesh with the chain 23 so that transmission can be transmitted from the transmission case 6 to the wheel drive case 9.

When performing light work with relatively low load, such as normal tilling work or weeding work, after loosening the wing nut 21 and releasing the fixation between the support plate 20 and the pin 19, the wheel drive case 9 is attached to the shaft of the transmission case 6. 16, tilt the wheel drive case 9, and fix it again with the wing nut 21. Therefore, the front drive wheel 7 rises above the ground and the rear drive wheel 8 is enough to run, and since the machine runs on one wheel, it is easy to turn the aircraft.

Further, when adjusting the vehicle height depending on the type of work equipment to be attached, this can be easily done by appropriately adjusting the inclination angle of the wheel drive case 9.

Next, when performing heavy work with a large load such as plowing of highly viscous soil or ridge-raising work, loosen the wing nut 21 to release the fixation between the support plate 20 and the pin 19, and then remove the rear wheel drive case 9. It is installed parallel to the ground, and the front and rear drive wheels 7 and 8 are both in contact with the ground, allowing the machine to travel and perform work with strong traction force.

Note that it is preferable to provide a power interrupting device to the drive wheels 7 and 8 to cut off the power to the drive wheel on the side that does not touch the ground.

In the embodiment shown in FIG. 4, the drive wheel 7 on the front side is formed to have a smaller diameter than the drive wheel on the rear side, thereby making it easier to cross over a ridge.

[Brief explanation of the drawing]

The figure shows an embodiment of the present invention.
2 is a plan view of essential parts, FIG. 3 is a side view showing the operating state, and FIG. 4 is a side view showing another embodiment. In the figure, numeral 1 is the gearbox, 2 is the prime mover, and 3 is the gearbox.
is a control handle, 4 is a tiller wheel, 5 is a work machine transmission case, 6 is a transmission case, 7 and 8 are drive wheels, 9
indicates a wheel drive case.

Claims (1)

[Scope of utility model registration request] A prime mover 2 and a control handle 3 are attached to the front and rear of the gearbox 1 in the center of the machine, and a work machine transmission case 5 is attached to the lower part of the gearbox 1, which is slanted toward the rear and downward, and has a tiller wheel 4, etc. mounted on its lower end. , A wheel drive case 9 is rotatably provided at the lower part of the transmission case 6 which is diagonally installed downward from the gearbox 1 and has drive wheels 7 and 8 mounted at both front and rear ends so as to be able to rotate and transmit data. Traveling equipment for aircraft, etc.