JPH09328020A - Work vehicle - Google Patents

Abstract

(57) Abstract: In a work vehicle having a fuel tank arranged above an engine, it is possible to easily perform a refueling operation for the fuel tank. A fuel tank (9) is attached to a support frame (12A) rotatable around a lower fulcrum so that the fuel tank (9) can be repositioned to the same level as an engine (10), and a supply port (9a) of the fuel tank (9) is provided. The fuel tank 9 is configured to always face upward regardless of the position change.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a work vehicle such as a combine or a straw harvester having a fuel tank arranged above an engine, and more particularly to a fuel supply structure for the fuel tank.

[0002]

2. Description of the Related Art The conventional combine harvester is the actual load of Shokai 62-36.
As disclosed in Japanese Patent No. 825, a fuel tank is attached to the upper surface of an engine bonnet that can swing and open and close about a front-rear axis. In the conventional structure described above, the fuel tank is arranged above the engine so that the fuel is supplied to the engine by gravity flow, and the fuel tank is arranged at the same level as the engine or below the engine. The fuel pump is no longer needed.

[0003]

However, in the above-mentioned conventional structure, the fuel tank is laid sideways integrally with the engine bonnet, which is the fuel tank support frame, and the fuel tank is at a low position at the same level as the engine. Even if the fuel tank can be located in the position where the fuel tank is laid on its side, the fuel supply port is turned sideways by the overturning of the fuel tank, and the fuel supply port is provided near the lateral outer side portion of the fuselage to replenish the fuel. It has a structure that cannot be used.
Therefore, when refueling the fuel tank, the portable fuel tank must be carried above the engine bonnet to refuel, and the refueling work is troublesome. An object of the present invention is to facilitate the operation of refueling a fuel tank.

[0004]

According to a first aspect of the present invention, in a work vehicle in which a fuel tank is arranged above an engine, the fuel tank is rotatable around a lower fulcrum. The fuel tank is configured so that its position can be changed to the same level as the engine, and the supply port of the fuel tank is always directed upward regardless of the position change of the fuel tank. [Operation] Even if the fuel tank support frame is laid down sideways, the fuel supply port of the fuel tank is directed upward,
The fuel can be replenished even if the fuel tank is located at the same low level as the engine. [Effect] As a result of the above configuration, it is not necessary to carry a portable fuel tank above the engine to replenish the fuel, and the fuel tank provided in the airframe is located at the same low level as the engine to save fuel. The fuel tank can be replenished and the fuel can be easily replenished to the fuel tank.

According to a second aspect of the present invention, the means for directing upward of the fuel supply port is such that the fuel supply port of the fuel tank is located at a corner portion of an upper surface in a direction opposite to a downward rotation direction of the fuel tank. Is provided diagonally upward in the direction opposite to the downward rotation direction. [Operation] When the fuel tank is above the engine, or when the fuel tank is at the same level as the engine due to the rotation of the fuel tank support frame, in any case, the fuel supply port faces upward. . [Effect] As described above, since the position of the fuel supply port is set, the structure can be simplified.

According to the third aspect of the present invention, the means for directing upward of the fuel supply port is such that the support frame of the fuel tank is constituted by a parallel four-link mechanism. [Operation] When the supporting frame of the fuel tank is laid down sideways, the position of the fuel tank is changed in a parallel posture, that is, the supply port of the fuel tank faces upward. [Effect] As a result of the above configuration, it is not necessary to make the fuel tank a special structure having the fuel supply port obliquely upward at the upper surface corner portion, and the fuel supply port provided upright at the center of the tank upper surface is provided. An existing fuel tank can be used.

According to a fourth aspect of the present invention, the supporting frame of the fuel tank is constituted by a dedicated frame for supporting only the fuel tank. [Operation] The fuel tank can be mounted on the upper surface of the engine bonnet and the engine bonnet can be laid down sideways with a light operating force as compared with the case of using the engine bonnet instead of the fuel tank support frame. [Effect] As a result of the above configuration, the position of the fuel tank can be smoothly changed with a light operating force.

[0008]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to a combine. As shown in FIG. 1, this combine is equipped with a mowing pretreatment device 3 in a front part of a machine body frame 2 equipped with a crawler traveling device 1 so that the machine body frame 2 is provided with a threshing device 4 and a bagging hopper 5. Mounted on the left and right sides, equipped with a waste straw conveying device 6 at the rear part of the threshing device 4, and a waste straw shredding device 7 at the lower part of the waste straw conveying device 6, and at the lateral side of the pre-mowing treatment device 3. A control section 8 is provided at the front position of the bagging hopper 5.

The control section 8 is composed of a control box 8a equipped with a speed change lever of the crawler traveling device 1 and an elevating lever of the pre-mowing processing device 3, and a driver's seat 8b. A fuel tank 9 is arranged behind 8b. The driver's seat 8b is mounted on the upper surface of an engine bonnet 11 covering the engine 10, and the fuel tank 9 is mounted on the upper surface of a fuel tank support frame 12 separately from the engine bonnet 11.

As shown in FIG. 2, the fuel tank support frame 12 is fixed to the machine frame 2 and a movable support frame 12A which is rotatable about the longitudinal axis X1 and laterally outward of the machine body with the lower end as a fulcrum. The fuel tank 9 includes a fixed support frame 12B, and the fuel tank 9 includes a pair of left and right bands 13 on an upper surface of a movable support frame 12A having an inverted L-shape in a front view.
Is installed through.

The movable support frame 12A is designed so that its sideways posture is restricted by a two-folded link 15 provided across the body-side bracket 14 and the movable support frame 12A. The movable support frame 1
2A is a buckle-type metal fitting provided on the side wall of the fuel tank 9 on the inner side of the fuselage so that the end of the upper frame portion 12a on the inner side of the fuselage can contact the upper surface of the fixed support frame 12B in the upright state. It is designed to be fixed via a fixing metal fitting 16 composed of 16a and a locking tool 16b provided on the fixed support frame 12B.

The fuel tank 9 is provided with an oblique fuel supply port 9a at a corner portion of the upper surface on the inner side of the fuselage toward the direction opposite to the downward rotation direction of the fuel tank, and is concerned with the rotation of the movable support frame 12A. Instead, the fuel supply port 9a faces upward. The fuel supply hose (not shown) led out from the lower surface of the fuel tank 9 is locked along the inner surface of the movable support frame 12A via a locking tool (not shown),
It is designed so that the fuel supply hose does not get caught in equipment around the engine as the movable support frame 12A rotates.

The engine bonnet 11 is constructed so as to be swingable and openable laterally outward of the machine body concentrically with the front-rear axis X1 of the movable support frame 12A.

As shown in FIG. 3, the discharged straw conveying device 6
Is composed of a stock holding device 6a consisting of a chain with protrusions and a tip locking carrier 6b consisting of a spiral shaft, and the rotation of the spiral shaft of the head locking carrier 6b causes the stray paddles of the drainage straw to stick. It is supposed to be shaken off.
Further, the conveying speed of the tip locking conveying device 6b is made faster than the conveying speed of the stock holding device 6a to eliminate the delay of the tip of the discharged straw conveyed from the threshing device 4 with the delay of the tip.

[Other Embodiments] As shown in FIG. 4, the support frame 12 of the fuel tank 9 is constituted by a parallel four-link mechanism so that the fuel erected on the upper surface of the fuel tank 9 regardless of the position change of the fuel tank 9. The supply port 9a may be configured to always face upward.

In the above embodiment, the fuel tank 9
Although it is attached to the dedicated support frame 12, it may be attached to the upper surface of the engine bonnet so as to be rotatable integrally with the engine bonnet.

[Brief description of drawings]

1] Overall side view of combine

FIG. 2 is a front view showing a fuel tank support structure.

FIG. 3 is a plan view of a discharge straw conveying device.

FIG. 4 is a front view of the second embodiment.

[Explanation of symbols]

 9 Fuel Tank 9a Fuel Supply Port 10 Engine 12A Fuel Tank Support Frame

Claims (4)

[Claims] 1. In a work vehicle in which a fuel tank is arranged above an engine, the fuel tank is mounted on a support frame rotatable around a lower fulcrum, and the fuel tank is repositioned to the same level as the engine. A work vehicle configured such that the supply port of the fuel tank always faces upward regardless of the position change of the fuel tank. 2. The means for directing upwards of the fuel supply port is arranged such that the fuel supply port of the fuel tank is located at a corner portion of an upper surface in a direction opposite to a downward rotation direction of the fuel tank, and a direction opposite to the downward rotation direction of the fuel tank. The work vehicle according to claim 1, wherein the work vehicle is provided obliquely upward. 3. The work vehicle according to claim 1, wherein the means for pointing the fuel supply port upward is one in which a support frame of the fuel tank is constituted by a parallel four-link mechanism. 4. The work vehicle according to claim 1 or 2, wherein the support frame of the fuel tank is constituted by a dedicated frame that supports only the fuel tank.