JPH0412813Y2 - - Google Patents

Description

[Detailed description of the invention] [Field of industrial application] This invention is a method for attaching the fuel tank for the engine to the aircraft body with the fuel tank placed between the rear axle and the boarding/exiting step frame located in front of the rear axle. This invention relates to the structure of a fuel tank mounting part for an agricultural tractor.

[Conventional technology]

In the above agricultural tractor, there is a step frame for getting on and off in front of the attached fuel tank, a rear axle at the rear, a rear axle on the lateral outer side, and a frame for the rear wheels on the upper side. There are fenders, and these become obstacles to taking out the fuel tank that has been released from the aircraft frame from the ground point, so in order to take out the fuel tank from the installation point, it is necessary to remove it from the installation point almost directly below it. The vehicle must be lowered to the ground, and from this lowered position, it must be moved forward through the lower part of the frame for getting on and off, and then pulled out laterally and outwardly from between the front and rear wheels. Conventionally, this type of agricultural tractor has a mounting structure in which the entire fuel tank must be lowered from the installation location to the ground almost directly below it at once.

[Problem that the invention attempts to solve]

When inspecting, repairing, or replacing a fuel tank, it is necessary to lower the fuel tank to the ground from the installation location or lift it from the ground to the installation location while supporting the entire weight of the fuel tank. Because of the above-mentioned obstacles in the vicinity of the tank, it is difficult to get into a position that is comfortable for working, and it is also difficult for a large number of people to work together, resulting in poor work efficiency in terms of attaching and detaching the tank.

The purpose of this invention is to modify the fuel tank so that it can be easily attached and detached.

[Means to solve the problem]

The characteristic configuration of the present invention is that, in the aforementioned fuel tank mounting structure for an agricultural tractor, a first tank receiving arm acts on the front end side of the fuel tank, and a second tank receiving arm acts on the rear end side of the fuel tank. attaching a stop arm to the aircraft body in a state where the first tank receiving arm can be freely removed;
A bolt that tightens and fixes the rear end side of the fuel tank to the second tank receiving arm is fixed to one of the fuel tank and the second tank receiving arm, and when the bolt is untightened and enters the bolt hole. The bolt hole is formed in a size that allows the front end side of the fuel tank to be grounded and the rear end side to rest on the second tank receiving arm when the fuel tank is in an open state. It is as follows.

[Effect]

To remove the fuel tank, remove the first tank receiving arm, untighten the bolt so that it will fit into the bolt hole, and first support the rear end of the fuel tank with the second tank receiving arm. , and the front end of the fuel tank is lowered and grounded while preventing the rear end of the fuel tank from coming off the second tank receiving arm by locking the fuel tank via the bolt with the second tank receiving arm. Then, while supporting the front end side of the fuel tank by grounding, the rear end side of the fuel tank is supported by the second
By adopting a lowering method in which the fuel tank is removed from the tank receiving arm and lowered to the ground, the fuel tank can be lowered onto the ground almost directly below the installation location. To install the fuel tank, first, while supporting the front end of the fuel tank on the ground, lift the rear end and place it on the second tank receiving arm, and insert the bolt into the bolt hole. While supporting the rear leg side by the second tank receiving arm and preventing the rear end side from coming off the second tank receiving arm using the bolt, lift the rear end side and attach the first tank receiving arm. By adopting the lifting method where the arm is attached, the fuel tank can be lifted from below to the installation location.

[Effect of idea]

The fuel tank can be raised and lowered from one side at a time, and there is no need to take special precautions to prevent the rear end from coming off the second tank receiving arm when raising and lowering the front end. Tanks can now be easily attached and detached even by one person, and inspection, repair, and replacement work can now be done quickly and easily from the attachment and detachment side.

〔Example〕

As shown in FIG. 5, a lift arm 4 for connecting various working devices such as a rotary tiller to the rear of a traveling machine having front wheels 1, rear wheels 2, a driving cabin 3, etc., so as to be operable to raise and lower; A power take-off shaft 5 for transmitting power to the connected working device is also attached to form an agricultural tractor.

As shown in FIG. 4, fuel tanks 8 for the engine 7 are provided on the left and right sides of the transmission case 6 forming the traveling aircraft body, respectively. Specifically, the left and right fuel tanks 8, 8 are designed to support the front end side of the driving cabin 3 and the boarding/exiting step 9, respectively, and to support the rear axle 1, respectively.
It is disposed between the frame 11 extending laterally outward from the transmission case 6 and the rear axle 10 so as to be located forward from the transmission case 6, and is attached to the transmission case 6 by a mounting structure described later. There is.

That is, the front end side of the fuel tank 8 is attached to the first tank receiving arm 12 attached to the lower side of the side surface of the transmission case 6 as shown in FIGS. 1 and 2.
The fuel tank 8 is mounted on the fuel tank 8 and is fastened and fixed by a pair of first bolts 13, 13 fixed to the fuel tank 8 and nuts 14 attached to these first bolts 13. Then, the rear end side of the fuel tank 8 is formed so as to be used for both the left fuel tank 8 and the right fuel tank 8, as shown in FIGS. 1 and 3, and the lower surface of the transmission case 6 is Second tank receiving arm 1 bolted to
5, and is tightened and fixed by a pair of second bolts 16, 16 fixed to the fuel tank 8 and nuts 17 attached to these second bolts 16.

The first tank receiving arm 12 is attached to the transmission case 6 with a bolt 18 so that it can be removed. When the pair of second bolts 16, 16 are untightened and inserted into the bolt hole 19 of the second tank receiving arm 15, the front end side is in contact with the ground as shown by the imaginary line in FIG. The bolt hole 19 is formed in a size that allows the fuel tank 8 to rest on the second tank receiving arm 15 with its rear end.
In other words, when lowering the fuel tank 8 from a predetermined installation location to the ground directly below it or lifting it from the ground to the installation location, the first tank receiving arm 12
Remove the second bolt 16 and untighten it so that it is engaged with the second tank receiving arm 15, so that the rear end side cannot be removed from the second tank receiving arm 15 by the second bolt 16. A method of lowering or lifting only the front end side while supporting the tank by the second tank receiving arm 15, that is, a method of lowering or lifting one side of the front end side and the rear end side. It is available for adoption.

[Another example]

The bolt 16 is attached to the second tank receiving arm 15.
It may also be carried out by fixing it to the side.

The present invention can also be applied to tractors that are not equipped with a driving cabin 3.

The fuel tank 8 may be grounded on one side by forming the bolt hole 19 as either a round hole or a long hole in the longitudinal direction of the fuselage.

Note that 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 fuel tank mounting portion of an agricultural tractor according to the present invention, in which FIG. 1 is a side view of the fuel tank mounting portion, FIG. 2 is a sectional view taken along the line - in FIG. 1, and FIG. 4 is a plan view showing the fuel loading position, and FIG. 5 is a side view of the entire agricultural tractor. 6... Airframe, 8... Fuel tank, 10... Rear axle, 11... Frame for boarding/exiting steps, 12...
First tank receiving arm, 15...Second tank receiving arm, 16...Bolt, 19...Bolt hole.

Claims (1)

[Scope of utility model registration request] A structure for attaching a fuel tank of an agricultural tractor to a vehicle body 6 in which a fuel tank 8 for an engine is disposed between a rear axle 10 and a frame 11 for getting on and off steps located in front of the rear axle 10, a first tank receiving arm 12 acting on the front end side of the fuel tank 8 and the fuel tank 8;
Second tank receiving arm 15 acting on the rear end side
is attached to the fuselage 6 with the first tank receiving arm 12 being freely removable, and a bolt 16 for tightening and fixing the rear end side of the fuel tank 8 to the second tank receiving arm 15 is attached to the fuel tank 8. The fuel tank 8 is fixed to one of the tank 8 and the second receiving arm 15, and the bolt 16 is untightened and inserted into the bolt hole 19.
A structure for attaching a fuel tank to an agricultural tractor, wherein the bolt hole 19 is formed in a size that allows the front end side of the fuel tank to be grounded and the rear end side to rest on the second tank receiving arm 15.