JPS6331803A - Traveling vehicle body - Google Patents

Abstract

PURPOSE:To reduce the concurrent lift of muds with driving wheels and auxiliary wheels, and prevent the disorder of a field by arranging lugs for propulsion only at the outside of the rims of auxiliary wheels fitted to the outside of driving wheels in a traveling vehicle body. CONSTITUTION:An agricultural machine 8 of riding type is so fitted with an agricultural device 10 via a link mechanism 9 as to be freely liftable at the rear, part of a riding type traveling body 5. And the body 5 has driving front wheels 19 for running right and left, right and left driving rear wheels 20 and right and left auxiliary wheels 45 smaller than said wheels 20 in diameter. In this case, a plurality of spikes 61 are arranged at equal intervals on the external surface of a solid tire 59 comprising synthetic rubber covering rims 58 and the tips of spokes 57 for the right and left auxiliary wheels 45. And a plurality of plate shape lugs 62 for propulsion are provided, projected toward the outside of the rims 58 or only the outside opposite to the right and left driving wheels 20. According to the aforesaid constitution, the concurrent lift of muds with each wheel 20 and 45 can be reduced.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Field of Application] The present invention relates to a traveling vehicle body in which auxiliary wheels are provided outside the main wheels to increase tractive force.

[Prior art]

As a conventional technique of this type, as shown in Japanese Patent Application Laid-open No. 54-54824, there is a technique in which auxiliary wheels are provided outside of main wheels provided on a traveling vehicle body.

[Problem that the invention seeks to solve]

However, since conventional auxiliary wheels have lugs on both the left and right sides of the rim, the lugs of the main wheel and the lugs of the auxiliary wheel face each other. There was a problem in that the farmland was being lifted up from both the left and right sides, causing extreme disturbance to the field. Then, the main wheel is a wheel with no protruding lugs on the left and right sides of the rim (for example, a pneumatic wheel as shown in Japanese Patent Publication No. 46-23161).
The same is true when auxiliary wheels such as those shown in Publication No. 24 are installed; because the lugs of the auxiliary wheels protrude toward the main wheels, dirt or mud may become trapped between the main wheels and the lugs of the auxiliary wheels. [Means for Solving the Problems] In order to solve the above-mentioned problems, the present invention provides auxiliary wheels 45, 45 on the outside of the drive wheels 20, 20 installed on the traveling vehicle body. The traveling vehicle body is characterized in that the propulsion lugs 62 of the auxiliary wheels 45, 45 are provided only on the outer side of the vehicle body of the rim 58.

〔Effect of the invention〕

Auxiliary wheels 45 provided on the outside of the drive wheels 20.
Since the propulsion lugs 62 of 45 are provided only on the outer side of the vehicle body of the rim 58, the driving wheels 20 and the auxiliary wheels 45 do not lift up much soil or mud, so the problems in the conventional example are solved. .

〔Example〕

Hereinafter, one embodiment of the present invention shown in the drawings will be described. Reference numeral 6 8 is a riding type rice transplanter which is a type of riding type agricultural working machine. It is constructed by mounting a rice transplanting device 10, which is a type, so as to be able to move up and down.

The passenger type traveling vehicle body 5 has a traveling transmission case 11 in the front part.
・The front wheel differential case 12 is installed, and the rear transmission case 13 with the rear wheel differential is installed at the rear, and both are connected to the fuselage frame 14.
The engine 17 is mounted approximately at the center of the fuselage on the single fuselage frames 14 and 15, which are connected by links 15 and 16. Reference numeral 2 indicates a cockpit located directly above the engine 17, 18 indicates a fuel tank, 19 and 19 indicate drive front axles for left and right steering, 2o and 20 indicate left and right drive rear wheels, and 45 and 45 indicate left and right drive wheels 20 and 20. 21 is a transmission shaft that connects the power shaft 22 of the engine 17 and the passive shaft 23 of the traveling transmission case 11, and 24 is a transmission shaft that transmits power from the front differential case 12 to the rear transmission case 13. It is.

The rice transplanting device 2 is supported by a transmission case 25 which also serves as a frame and which is connected to the rear end of the link mechanism 9, and a lower support member 26 and an upper support member 27 provided on the transmission case 25, so that the rice transplanting device 2 can move in the left-right direction of the machine. A reciprocating seedling platform 28 and seedling planting devices 29a, 29b, which are attached to the rear end of the transmission case 25 and divide one seedling each from the lower end of the seedling platform 28 and plant them in the field. It is comprised of a central earth leveling float 31, left and right earth leveling floats 32a, 32b, etc., which are earth leveling bodies whose rear parts are pivotally supported 3o at the lower part of the transmission case 25 and whose front parts are mounted so as to be vertically swingable.

The left and right leveling floats 32a and 32b are arranged behind the left and right drive rear wheels 20 and 2o so that their front and rear center lines coincide with the front and rear center lines of the left and right drive rear wheels 20 and 20, respectively.
The left and right drive rear wheels 20, 20 level the disturbed field and also plant seedlings [29a, 29b, 29d, 29
It is provided to level the ground in front of the field where seedlings will be planted at e.

A hydraulic cylinder 33 is fixed to the body frames 14 and 15 below the engine 17, and the rear end of the ram 34 is connected to the base of the link mechanism 9 via a connecting arm 35.

Reference numeral 6 denotes a steering interlocking mechanism, which rotatably supports a drive shaft 39 in a support tube 38 fixed to the front part of the traveling missimin case 11 with upper and lower fixing fittings 36 and 37. An arm 4o is fixed to the lower end, and a drive front shaft 1 for left and right steering is attached to both left and right sides of the arm 4o.
The knuckle arms 41, 41 of 9, 19 are connected by left and right drag rods 42, 42, respectively. On the other hand, a steering gear box 43 is fixed to the upper end of the support tube 38, and the upper end of the drive shaft 39 is transmission-connected to a steering shaft 44 via a transmission mechanism within the steering gear box 43. The upper end of the steering shaft 44 is fixed to the steering handle 3.

1 is a step made of sheet metal, and the fuselage frame 14.1
5 on the same flat plane.

Reference numeral 7 denotes a sheet metal cover that covers the steering interlocking mechanism 6 of the steering handle 3, and various operation pedals (clutch pedal 4a, left and right brake pedals,
accelerator pedal).

Here, left and right rear wheels 20, 20 and left and right auxiliary wheels 45,
To explain the configuration of 45 in more detail, the left and right drive rear wheels 20
・20 denotes cylindrical bosses 48, 48 which are fitted onto the left and right drive shafts 47, 47 which protrude left and right from the rear transmission case 46, respectively, and are fixed by pins 49, and the bosses 48;
- A plurality of spokes 50 whose base ends are fixed to 48...
A rim 51 made of a ring-shaped iron vip fixed to the tips of the spokes 50, a solid tire part 52 made of synthetic rubber that covers the rim 51 and the tips of the spokes 50, and the boss 48. Each of the spokes 50 is constituted by a reinforcing plate 53 made of a disc-shaped iron plate fixed between the spokes 50 and the spokes 50 .

The solid tire portion 52 has spikes 54 on its outer periphery.
are provided at equal intervals.

A plurality of plate-shaped lugs 55 for propulsion protrude from both left and right outer sides of the rim 51 and are provided at equal intervals.

The left and right auxiliary wheels 45, 45 have cylindrical bosses 56, 56, and a plurality of spokes 5 whose base ends are fixed to the bosses 56, 56.
7..., a rim 58 made of a ring-shaped iron pipe fixed to the tips of the spokes 57..., and a solid tire part 59 made of synthetic rubber that covers the rim 58 and the tips of the spokes 57... Each of the bosses 56 and the spokes 57 is constituted by a reinforcing plate 60 made of a disc-shaped iron plate fixed between them, and the solid tire portion 59 has a plurality of spikes 61 on its outer circumference. Propulsion plate-shaped lugs 62 are provided at equal intervals on the rim 58.
A plurality of them are provided at equal intervals and protrude only toward the outside of the vehicle body.

Reference numeral 63 denotes an auxiliary wheel connecting member made of a large diameter cylindrical body made of iron plate.
64 are reinforcing plates 53 and 64 of the driving wheel 20 and the auxiliary wheel 45, respectively.
60 with bolts 65..., and this auxiliary wheel connecting member 63 connects the driving wheel 20 and the auxiliary wheel 45.
and are configured to rotate together.

And, the left drive wheel 2o is equipped with @29a and 29b for planting seedlings.
The left driving wheel 2o is located in the center of the seedling planting positions 1a-b, and the left driving wheel 2o is located in the center of the seedling planting positions of the devices 29d and 29e [d and e. The attachment is located in the center between the seedling planting position a of 29a and the seedling planting position a' on the outside (the seedling planting position of the next process or the seedling planting position of the previous process), and the right auxiliary vehicle transport 45 is the seedling planting position e of the device 29g.
and the seedling planting position Is' on the outside (the seedling planting position in the next step or the seedling planting position in the previous step).

When the riding-type rice transplanter 8 configured as described above is placed in a paddy field, seedlings are placed on the seedling platform 28, and the various parts are driven to move the machine forward, rice transplanting work is performed. If you turn the steering shaft 47. Bevel gear 48. Bevel gear 45, drive shaft 39. Arm 40. The left and right steering drive front wheels 19, 19 can change the directions of the left and right steering wheels via the left and right drag rods 42, 42, and the direction of movement of the vehicle body can be changed to the left or right direction. A cover 7 that covers the operation pedal 4a is provided inside the left and right outer sides of the step 1 so that the step 1 is also present on the left and right sides of the cover 7.
・The arrangement of the pedals 4b allows the operator to operate the vehicle in a comfortable operating position, and the various operation pedals 4a do not interfere with the vehicle, making it easy to get on and off the vehicle, resulting in very good workability. Step 1 is also used when the front part of the riding rice transplanter 8 is placed on the ridge, the seedlings are taken from the ridge, and the seedlings are fed to the seedling platform 28 by passing over the step 1 on the side of the cover 7.
Since there are no various operation pedals 4a on the top, workability is very good.

In particular, the left and right auxiliary wheels 45, 45 are the left and right drive wheels 2.
Since it has lugs only on the outside of the vehicle body on the side opposite to 0 and 20, the left and right drive wheels 2o and 20 and the left and right auxiliary wheels 4
5 and 45 cooperate with each other to reduce the amount of mud lifted, which does not disturb the field too much, allowing for good seedling planting work.

In the above embodiment, an example was shown in which wheels having lugs protruding on both the left and right sides of the rim were used as the left and right drive wheels, but in addition, as left and right drive wheels, only one side of the rim inside the vehicle body (auxiliary) was used as the left and right drive wheels. By using wheels with protruding lugs (only on the side opposite the wheels), there are no lugs between the drive wheels and the auxiliary wheels, and the lifting of mud by the cooperation of the auxiliary wheels is further reduced.

Furthermore, when pneumatic wheels such as those shown in Japanese Patent Publication No. 46-23161 are used as the left and right drive wheels, not only is there less mud lifting, but the cushioning properties and propulsion performance are good.

[Brief explanation of the drawing]

The drawings show one embodiment of the invention, with FIG. 1 being a side view and FIG. 2 being a plan view. Note that the symbols in the figure are as follows. 20 Drive wheel 45 Auxiliary wheel 58 Rim 62 Propulsion lug

Claims (1)

[Claims] The auxiliary wheels 45, 45 are provided on the outside of the drive wheels 20, 20 installed on the traveling vehicle body, and the propulsion lugs 62 of the auxiliary wheels 45, 45 are provided only on the outside of the vehicle body of the rim 58. Running vehicle body.