JPH0534415Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a structure of an operating section of an agricultural tractor in which a rear wheel is attached to a transmission case and an operating lever is attached to the transmission case.

[Conventional technology]

In such agricultural tractors, the control section space is secured as wide as possible, and the mud thrown up by the rear wheels does not reach the part where the control lever of the transmission case is attached, or the control lever of the rear wheel fender. Conventionally, there is a device that can avoid entering the control section side through the through hole, as shown in, for example, Japanese Utility Model Application Publication No. 58-150527. In other words, the rear wheel fender is provided with a vertical plate portion that is located between the transmission case and the wheel and covers the operation lever mounting portion of the transmission case, and the operation of the vertical plate portion and top plate portion of the rear wheel fender is controlled. A cover that covers the lever through hole is attached to the rear wheel fender.

[Problem that the invention attempts to solve]

In the conventional case, when removing the rear wheel fender for inspecting the inside of the aircraft, it was necessary to remove the control lever, which was time-consuming.

The purpose of this invention is to secure as much space as possible for the control section, and to prevent mud from entering the control lever mounting section and control section from the rear wheel, while also making it possible to remove the rear wheel fender. The point is that this can be done without requiring the removal of the lever.

[Means for solving problems]

The characteristic configuration of the present invention is that, in the above-mentioned operation section structure of the agricultural tractor, a rear wheel fender is connected to a removable upper body cover that covers the upper part of the transmission case, and the operation lever is connected to the rear wheel fender. It is arranged so as to penetrate only the top plate portion of the transmission case and protrude upward therefrom, and also to extend through a portion of the transmission case to which the operation lever is attached and a portion of the rear wheel fender through which the operation lever is attached. A mudguard cover for shielding is located between the operation lever and the rear wheel, and the lower end is attached to the transmission case with the upper end thereof in a free state separated and independent from the rear wheel fender. The functions and effects are as follows.

[Effect]

Even if the control lever is arranged so that it protrudes upward through the top plate of the rear wheel fender so that the grip part of the control lever can be positioned as far away from the driver's seat as possible to the side, and Even if the rear wheel fender is connected to the cover for the upper part of the fuselage, the rear wheel fender can be removed by lifting it upwards without removing the control lever. Even if the fender vertical plate part located between the rear wheel and the rear wheel is eliminated and there is no need to provide a lever penetration part that would be an obstacle to removing the fender, the operation lever penetration hole in the rear wheel fender top plate part and the transmission case can be removed. Cover the operation lever mounting part with a mudguard cover,
It is possible to prevent mud from the wheels from entering the control section through the lever through hole or adhering to the control lever mounting section of the transmission case.

Furthermore, as shown in FIGS. 8 and 9, for example, the front end of the mudguard cover 21 and the rear wheel fender 11
When the mudguard cover 26 is attached to the rear wheel fender 11 by locking and holding the mudguard cover 26 and fixing the rear end to the rear wheel fender 11 with a pair of upper and lower bolts 25, 25, when the rear wheel fender 11 is removed, the mudguard cover 21 However, since the mudguard cover 21 is attached to the transmission case, the rear wheel fender 11 can be removed without requiring the removal of the mudguard cover.

[Effect of idea]

Therefore, by allowing the control lever to protrude from the top plate of the rear wheel fender, the space for the control section can be secured as wide as possible, but the action of the mudguard cover prevents the mud thrown up by the rear wheels from being washed away. A cover for the upper part of the fuselage that prevents the rear wheel fender from getting on the control lever mounting part of the front case or entering the control section through the lever through hole in the fender, while also making it possible to remove the rear wheel fender without having to remove the control lever. Furthermore, since it is not necessary to remove the mudguard cover, the rear wheel fender can be quickly removed without the need to remove either the operating lever or the mudguard cover, making it easier to inspect and repair the aircraft. These tasks can now be done more efficiently from the rear wheel fender attachment/detachment surface.

〔Example〕

As shown in FIGS. 3 and 7, various working devices such as a rotary tiller are installed at the rear of the traveling body, which has a pair of left and right front wheels 1, 1, a pair of left and right rear wheels 2, 2, and a driving cabin K. The agricultural tractor is constructed by providing a lift arm 3 that connects the 2 and 3 so that they can be raised and lowered, and a power take-off shaft 4 that transmits power to the connecting work device.

The operating cabin K is removably mounted using the mounting structure shown in FIGS. 3 to 7.
That is, struts 6 are erected on each of the pair of rear axle cases 5, 5 attached to both sides of the transmission case M, and square elastic members 77 are fitted inside the mounting portions 6A, 6A of these struts 6, 6, respectively. Then, the elastic material 7 is provided with a conical groove 7A for inserting a member 9 having a substantially conical tip portion connected to the rear support plates 8, 8 of the operating cabin K by a bolt, and an insertion hole 7B for the connecting bolt 10. After inserting the rear support plates 8, 8 of the driving cabin K downward through the holes 11A formed in the rear wheel fender 11, and inserting the conical members 9, 9 into the grooves 7A, the rubber tubes are inserted. 1
The rear support plates 8, 8 of the operating cabin K are attached and fixed by passing two externally fitted connecting bolts 10 through the mounting portion 6A and the elastic member 7 and fixing them. Further, a plurality of locking protrusions 14 attached to the front leg portion 13 of the operating cabin K are connected to a plurality of locking holes 15A formed in the arch-shaped stay 15 and a plurality of locking holes 15A formed in the front ends of both side portions of the driving step 16. They are inserted into the locking holes 16A to lock and hold the front leg portion 13, respectively.

As shown in FIGS. 1 and 2, the operation lever 19 of the driving transmission (not shown) installed in the transmission case M can be freely swung around an axis 18 parallel to the rear axle 17. Big and said rear wheel fender 1
It passes through a through hole 11b formed in the top plate portion 11B of 1 and is attached to the side portion of the mission case M so as to protrude upward. Then, mud from the rear wheel 2 covers the lever mounting portion 20 of the transmission case M and the through hole 11b.
The mudguard cover 21 is positioned between the gear shift operation lever 19 and the rear wheel 2, and the upper end thereof is The lower end side is attached to the transmission case M in a free state where the side is separated and independent from the rear wheel fender 11.

The rear wheel fender 11 includes a removable fuselage upper cover 2 that covers the upper part of the transmission case M.
2, and when the rear wheel fender 11 is removed to inspect the inside of the aircraft, a driver's seat 23 placed on the upper fuselage cover 22 is installed.
At the same time, the rear wheel fender 11 is removed above the fuselage by loosening the bolts and removing the cover 22 for the upper part of the fuselage, and in this case, it is not necessary to remove the operating lever 19 and the mudguard cover 21. .

[Another example]

In the above embodiment, the rear wheel fender 11 was integrally molded with the fuselage upper cover 22, but the rear wheel fender 1
1 may be formed separately and attached to the fuselage upper cover 22 with bolts or the like.

Incidentally, although reference numerals are written in the claims section of the utility model registration for convenience of comparison with the drawings, the present invention is not limited to the structure of the attached drawings by such entry.

[Brief explanation of the drawing]

The drawings show an embodiment of the structure of the operating section of an agricultural tractor according to the present invention, in which FIG. 1 is a longitudinal sectional front view showing the mounting section of the operating lever, FIG. 2 is a longitudinal sectional side view showing the mounting section of the driver's seat, and FIG. 4 to 6 are cross-sectional views of essential parts showing the mounting structure of the driving cabin, and FIG. 7 is a perspective view of the agricultural tractor. FIG. 8 is a longitudinal sectional front view showing a conventional example of a mounting portion of an operating lever, and FIG. 9 is a transverse plan view showing a conventional example of a mudguard cover mounting structure. 2... Rear wheel, 11... Rear wheel fender, 11B
...Top plate part, 11b, 20... part, 19...
Operation lever, 21...mudguard cover, 22...cover for the upper part of the fuselage, M...mission case.

Claims (1)

[Scope of utility model registration request] This is an operation section structure of an agricultural tractor in which a rear wheel 2 is attached to a transmission case M, and an operation lever 19 is attached to the transmission case M, and the cover is a removable upper body cover that covers the upper part of the transmission case M. 22 is connected to the rear wheel fender 11, and the operation lever 19 is connected to the rear wheel fender 11.
It is arranged so as to penetrate only the top plate portion 11B of the transmission case M and protrude upward therefrom, and the portion 20 of the transmission case M to which the operation lever 19 is attached and the operation lever 19 of the rear wheel fender 11 A mudguard cover 21 for shielding the penetrating portion 11b is positioned between the operating lever 19 and the rear wheel 2, and the lower end is in a free state with its upper end separated and independent from the rear wheel fender 11. The operation part structure of an agricultural tractor whose side is attached to the transmission case M.