JPH0324371B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention mainly relates to a fuel tank mounted on a power agricultural machine such as an agricultural tractor.

As agricultural tractors grow larger, it is essential to increase the capacity of the fuel tank itself, but it is possible to increase the capacity of the fuel tank alone without obstructing the operator's forward view or significantly increasing the wheelbase. It is extremely difficult to achieve this with a tractor, which has many spatial constraints.

This invention has been proposed in view of the above-mentioned problems, and aims to provide a fuel tank that can be installed extremely easily on existing tractors.

To this end, the present invention has taken the following technical measures.

That is, in the fuel tank 13 provided below the step 5 and on the side of the fuselage 2, the transmission case composing the fuselage 2 has a rear part narrower than the front part, and a rear part of the transmission case. The hydraulic equipment of the aircraft is mounted on the side of the aircraft, and the rear half of the fuel tank is located between the side of the aircraft and the fender that covers the rear wheels. The front half portion deviated outward in the direction is attached to the side portion of the fuselage so as to cover the hydraulic equipment and correspond to the side portion of the rear side portion of the transmission case. The structure of the fuel tank is characterized by:

An embodiment of the present invention will be described below based on the drawings.

1 is an agricultural tractor, this agricultural tractor 1
Above the clutch housing 3 and transmission case 4, which constitute the fuselage 2 of the
A step 5 with a wide width and a flat top surface is provided for the operator to place his/her feet on during operation, and a main gear shift lever 6 is located at the rear of this step 5, to the right in the direction of travel.
The clutch housing 3 has a wide front part and a narrow rear part, and the transmission case 4 attached to this rear part has a rear part. They are all formed identically. Reference numeral 9 denotes a rear axle housing into which the axle 10 is inserted and mounted, and is protruded from both sides of the rear part of the transmission case 4.
Rear wheels 11, 11 are attached to the ends of 10. 12, 12 are interposed between the rear wheels 11, 11 and the transmission case 4, and are rotating rear wheels 1.
This is a fender that covers the inner part and upper outer circumferential part of parts 1 and 11. Reference numeral 13 denotes a sub-fuel tank, and this sub-fuel tank 13 has a substantially rectangular outline when viewed from the side and front, and when viewed from above, it is a half-case body with different widths in the lateral direction at the front and back, as shown in FIG. The two halves of the case are welded together in their longitudinal planes, and the two half-case bodies are formed using the same drawing die.

As is clear from FIG. 2, the combined fuel tank 13 has its rear half 13a located between the rear side wall of the clutch housing 3 and the front side wall of the transmission case 4 and the fender 12. The first half 13 connected to this second half 13a
b is attached to the fuselage 2 in a position such that it is deviated more outwardly than the rear half 13a. 14,1
4 is a frame plate on which this sub-fuel tank 13 is installed;
A sub-fuel tank 13, which is fixed laterally to the lower part of the clutch housing 3 and placed on the front frame plates 14, 14, is wrapped and fixed with two tightening bands 15.

In the space formed by the inside of the front half 13b of the sub-fuel tank 13 and the outside wall of the rear side of the clutch housing 3, a PTO clutch valve 17 and a travel hydraulic control valve 18 are installed in front with the diverter valve 16 in between. These are integrated into the clutch housing 3.
Fixed to the outside wall.

The hydraulic oil sent by the hydraulic pump 19 is first diverted by the diversion valve 16, and a part of it is
PTO clutch valve 17 and travel hydraulic valve 1
8, and the remaining hydraulic fluid is sent to the main control valve for hydraulic lifting (not shown). 2
0 is a hanging type clutch pedal attached to the fuselage 2, and an arm 21 provided at the rotating base of the clutch pedal 20 and a clutch arm 22 pivotally supported on the side wall of the clutch housing 3 are interlocked and connected by a rod 23. ing.

The symbol 24 in the figure is a main fuel tank, which is connected to the sub-fuel tank 13 through a pipe 25, and the fuel is supplied from the sub-fuel tank 13 to the pipe 26.
It is configured to be sent to the engine 27 via the.

According to the above example, the two half-case bodies constituting the sub-fuel tank 13 can be formed using the same drawing die, and if they are butted point-symmetrically and welded, the front half 13b will be smaller than the rear half 13a. It can be attached to the lateral side of the fuselage 2 so as to be deflected laterally outward, and has the advantage that it can be manufactured at an extremely low cost since only one drawing die is required.

In addition, various control valves 1 are provided in a space formed by the front half 13b of the sub-fuel tank 13 and the side wall of the clutch housing 3 as a transmission case.
Since valves 7 and 18 are provided, these valves 17 and 1
8 does not cause problems such as damage due to collision with obstacles such as stones thrown by the rotating rear wheels 11, clods of earth carried around by the lugs of the rear wheels 11, or trees that are forced to fall. , valve 17,1
8 or the hydraulic piping 28, which will not interfere with operation.

FIG. 5 shows another embodiment in which the half-case bodies of the fuel tank are joined together at horizontal mating surfaces.

Since the present invention is configured as described above, it has the following technical effects.

In short, this invention provides that in a fuel tank provided below the step and on the side of the fuselage, the transmission case making up the fuselage is formed narrower on the rear side than the front side, and the rear side of the transmission case is narrower than the front side. The hydraulic equipment of the aircraft is attached to the side of the fuselage, and the rear half of the fuel tank is located between the side of the fuselage and the fender that covers the rear wheels. The front half deviated outward is attached to the side of the fuselage so as to cover the hydraulic equipment and correspond to the lateral side of the rear side of the transmission case, so that there is no space between the rear side of the transmission case and the fuel tank. The hydraulic equipment of the aircraft can be installed by effectively utilizing the space of It is possible to prevent damage to hydraulic equipment caused by obstacles such as thrown clods of earth or trees brought down by the rear wheels.

[Brief explanation of the drawing]

The figure shows one embodiment of this invention,
Fig. 1 is a side view, Fig. 2 is a plan view, Fig. 3 is a side view of main parts, Fig. 4 is a sectional view taken along line A-A in Fig. 3, and Fig. 5 is a fuel tank shown as another embodiment. FIG. Explanation of symbols: 1... Agricultural tractor, 2... Airframe, 3... Clutch housing, 4... Mission case, 5... Step, 12... Fender, 13... Fuel tank.

Claims (1)

[Claims] 1. In the fuel tank provided below the step and on the side of the aircraft, the transmission case that makes up the aircraft has a rear part narrower than the front part, and The hydraulic equipment of the aircraft is attached to the rear part, and the fuel tank is located in the rear part between the side part of the aircraft and the fender that covers the rear wheels, and is connected to this rear part and is offset laterally outward. A fuel tank characterized in that the front half of the fuel tank is attached to the side of the aircraft body so as to cover the hydraulic equipment and correspond to the side of the rear side of the transmission case.