JPH06144028A - Farm working vehicle - Google Patents

Abstract

PURPOSE:To mount a large capacity plastic fuel tank with the center of gravity of a tank body lowered without damaging it. CONSTITUTION:A fuel tank T is provided in the laterally outside section of the body frame 4 between the front and rear wheels 1a and 1b, and the lower section of the fuel tank T is supported through a supporting member 8, which is also used as a protective plate for connecting the body frame 4, and the intermediate section of the fuel tank T in the vertical direction is supported through a pair of tank supporting stays 9 and 9, which are connected to the body frame 4 in the longitudinal direction.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an agricultural work vehicle such as a riding lawn mower or a tractor, and more particularly to an agricultural work vehicle having a fuel tank provided on the lateral outside of a vehicle body frame between front and rear wheels.

[0002]

2. Description of the Related Art Conventionally, in a riding lawn mower, a fuel tank provided on a lateral outer side portion of a vehicle body frame between front and rear wheels is arranged in a vertical direction as disclosed in Japanese Utility Model Laid-Open No. 4-7923. The middle portion is supported via a pair of front and rear tank support stays that project laterally outward from the vehicle body frame.

[0003]

The structure in which the fuel tank is arranged on the lateral outside of the body frame between the front and rear wheels is higher than that in the structure in which the fuel tank is mounted on the upper part of the body frame. Thus, the center of gravity of the vehicle body can be lowered, and the fuel tank can be constructed to have a large capacity without being affected by other devices around the engine. However, in recent years, the fuel tank is often formed of a synthetic resin material which is lightweight and easy to manufacture. When the fuel tank is a resin molded product, the bottom surface of the fuel tank is a convex portion on the ground when traveling on an uneven terrain. However, there was an inconvenience that it was easily damaged when it came into contact with etc. An object of the present invention is to make it possible to provide a large-capacity resin fuel tank with a low body center of gravity and with less damage.

[0004]

To achieve the above object, the present invention is characterized in that a bottom surface of a fuel tank is supported by a supporting member also connected to a vehicle body frame and also serving as a protective plate. The intermediate portion in the up-down direction is supported by a pair of front and rear tank support stays connected to the vehicle body frame.

[0005]

Since the bottom surface of the resin fuel tank is supported by the supporting member which also serves as a protective plate, the bottom surface of the fuel tank comes into contact with the convex portion of the ground for protection. or,
Since the bottom surface of the fuel tank is supported via the support member that also serves as a protective plate, it is possible to suppress the bending and twisting of the pair of front and rear tank support stays that support the vertical middle portion of the fuel tank. .

[0006]

As a result of the above construction, a large-capacity resin fuel tank can be provided with a low center of gravity, less damage, and stable support.

[0007]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 3 shows a front mount type lawnmower in which a mower MA is mounted on the front part of the traveling body A. The riding lawn mower includes an engine E, a hydrostatic stepless transmission (not shown), and The front wheels 1a are driven via the transmission in the traveling mission case M, and the rear wheels 1b are steered in accordance with the operation of the steering handle 3 arranged in front of the driver's seat 2. Has become.
A fuel tank T made of resin is provided on the lateral outside of the vehicle body frame 4 between the front and rear wheels of the traveling machine body A. Next, explaining the support structure of the fuel tank,
As shown in FIGS. 1 and 2, a vertical frame 5 for mounting a control deck is connected to the inner surface side of a body frame 4 having a U-shaped cross section with the opening facing the lateral outer side of the aircraft. A steering deck 6 and a seat mount 7 are fastened and connected to the upper part of 5. Further, a tray 8 made of sheet metal, which serves as a support member also serving as a protective plate for receiving and supporting the bottom surface of the fuel tank T, is welded and connected to the lower portion of the vertical frame 5 for mounting the operation deck. Further, a pair of front and rear tank support stays 9, 9 for supporting the vertical middle portion of the fuel tank T are welded and connected to the upper surface of the vehicle body frame 4. The fuel tank T is integrally provided with a pair of front and rear connecting brackets 10a, 10a, 10b, 10b at the lower portion and an intermediate portion in the vertical direction, and the connecting brackets 10a, 10a at the lower portion of the tank are It is bolted to the end face of the tray 8 and the connecting brackets 10b and 10b at the tank middle portion are bolted to the end faces of the tank support stays 9 and 9.

As shown in FIG. 2, a fuel pump 11 for supplying fuel from the fuel tank T to the engine E is attached to a bracket 12 of a vehicle body frame 4 in an inclined posture, and a pipe 13 from the fuel pump 11 to the engine E is installed. The bend is reduced. In addition, the suction pipe 1 that sucks fuel from above
4 is supported by a rubber cap 15 with a collar so that the fuel suction pipe 14 can be used as both a hold and a seal.

[Other Embodiments] A farm work vehicle may be a tractor.

It should be noted that although reference numerals are given in the claims for convenience of comparison with the drawings, the present invention is not limited to the structures of the accompanying drawings by the entry.

[Brief description of drawings]

FIG. 1 is a side view showing a support structure of a fuel tank.

[Figure 2] Same as above

[Figure 3] Side view of the entire riding lawn mower

[Explanation of symbols]

 1a front wheel 1b rear wheel 4 vehicle body frame 8 saucer 9 tank support stay T fuel tank

Claims (1)

[Claims] 1. A fuel tank (T) made of resin on the lateral outside of the body frame (4) between the front and rear wheels (1a), (1b).
In the agricultural work vehicle in which the fuel tank (T) is provided, the bottom surface of the fuel tank (T) is supported by a support member (8) also connected to the vehicle body frame (4) and also as a protective plate, and the fuel tank (T) is vertically moved. An agricultural work vehicle in which the intermediate portion of the above is supported via a pair of front and rear tank support stays (9) and (9) connected to the vehicle body frame (4).