JP2504115Y2 - Fuel tank device for traveling vehicle - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial field of application) The present invention relates to a fuel tank device for a traveling vehicle.

(Prior Art) In a traveling vehicle, for example, a wheel-type tractor, from the viewpoint of preventing oil temperature rise due to engine hot air and increasing capacity,
There is a technology that attaches a fuel tank between the rear wheel fenders behind the driver's seat.

(Problems to be Solved by the Invention) When the amount of oil in the fuel tank decreases due to traveling of the vehicle for a long time in the above-described conventional technique, the outlet may be exposed to the air due to the inclination of the vehicle in the front, rear, left, and right directions. There was a problem, which caused air suction.

The present invention forms a fuel retaining recess at the bottom of the tank to prevent the intake port from appearing to the air even when the tank oil amount decreases, and prevents the air intake by providing the intake port in this recess. At the same time, the purpose is to prevent the generation of bubbles in the recess.

(Means for Solving the Problem) The present invention provides a fuel tank device for a traveling vehicle in which a fuel tank 11 is mounted between rear wheel fenders 10 and 10 behind a driver's seat 6 in order to achieve the above object. The following technical measures have been taken.

That is, according to the present invention, the fuel storage recess 13 is formed at the bottom of the fuel tank 11, and the recess bottom 13A is formed in the recess 13.
An extraction pipe 15 having an extraction port 14 protruding further upward is provided,
A froth prevention plate 18 is provided in the recess 13 having a clearance 17 directly above the outlet 14A, and the froth prevention plate 18 is fixed to the recess 13 in the front and rear of the vehicle traveling direction. Or, a communication port 19 that connects the tank 11 and the recess 13 to both
Are formed.

(Operation) Even if the amount of oil in the fuel tank 11 decreases due to long-term operation, the amount of oil is retained in the recess 13 provided at the bottom of the fuel tank 11, and the intake 14 is provided in this recess 13 to prevent air suction. To be done. Further, even if the vehicle leans forward, backward, leftward or rightward, a predetermined amount of oil can be so-called dispensed and taken out in the concave portion 13, so that air suction is prevented.

The generation of bubbles in the recess 13 is prevented by the bubble-preventing plate 18 having a clearance 17 just above the take-out port 14 and provided.

The bubbling prevention plate 18 has a recess 13 in the front and rear of the vehicle traveling direction.
Since it is adhered to, the air bubbles caused by the oil flow due to the frequent repetition of forward and backward movement will immediately cause the recess 13
Is prevented from invading.

Embodiment An embodiment of the present invention will be described in detail below with reference to the drawings.

In FIG. 4, the traveling vehicle 1 is exemplified by a two-shaft, four-wheel tractor having front wheels 2 and rear wheels 3, and includes a hood 4, a steering wheel 5, a driver's seat 6 and the like that covers the engine.

The driver's seat 6 is on a floor seat covering a hydraulic device 8 having a lift arm 7, and has a pair of left and right rear wheel fenders 10.
It is located in between.

Both ends 9 of a fuel tank 11 are attached between the rear wheel fenders 10, and the fuel tank 11 is fixed to each elevation 10A of the rear wheel fender 10 behind the driver's seat 6 as shown in FIG. .

The fuel tank 11 has a fuel filler port 12, and a fuel retaining recess 13 is formed in one side of the bottom portion thereof in a funnel shape having a bottom in cross section.

As shown in FIG. 1, a take-out pipe 15 having a take-out port 14 is provided in the recess 13 and a two-pronged hose 16 is connected to the take-out pipe 15 and one of the two prongs 16 is a filter for a fuel injection pump. And the like are connected below to form a supply hose, and the other is connected to the upper part of the fuel tank 11 to form an air release hose.

The take-out pipe 15 vertically penetrates the recess 13, and the take-out port 14 is projected above the bottom 13A of the recess 13, and the take-out port 14 is formed with a plurality of openings 14A not only on the upper end but also on the periphery.

This is because if only the upper end is opened, the fuel comes in through one opening while swirling while the fuel is being used, so dust such as leaves may easily become clogged, and fuel supply may become difficult. , A plurality of openings 14A are formed not only on the upper end but also in the periphery, so that even if one opening 14A is clogged,
This is so that fuel can be supplied from the other opening 14A.

An anti-foaming plate 18 is provided in the recess 13 directly above the outlet 14 with a predetermined clearance 17, and the anti-foaming plate 18 is in the forward F and backward R directions of the traveling vehicle 1 as shown in FIG. The side is fixed to the mold of the recess 13 by welding or the like, and one or both in the left-right direction is a communication port 19 that connects the tank 11 and the recess 13.

This is to prevent the air bubbles accompanying the collision of the oil flowing on the prevention plate 18 with the wall of the recess 13 with the vehicle 11 frequently repeating forward and backward from immediately entering the recess 13,
In addition, the prevention plate 18 is provided with an inclination θ as shown in FIG. 1 to prevent the intake of air from the outlet 14.

In addition, in FIG. 4, a front loader 20 is provided with a mast 22 standing upright on both sides of the vehicle body 21, a boom 23 pivotally supported by the mast 22 so as to be vertically movable, and a tip of the boom 23. It is composed of buckets 24, 25 is a lift cylinder, and 26 is a bucket cylinder.

When the loader work is carried out using the front loader 20 as described above, the vehicle 1 is frequently moved in the front-rear direction and is also inclined in the left-right direction, so that the concave portion 13 is formed in the bottom portion of the tank 11, and The significance of the present invention in which the anti-foaming plate 18 and the like are provided becomes more effective.

(Effect of the Invention) The present invention is as described above.
A fuel retaining recess 13 is formed at the bottom of the
Since the take-out pipe 15 having the take-out port 14 projecting upward from the bottom 13A of the concave portion is provided, even if the amount of oil in the tank 11 decreases, the concave portion 15
Since a predetermined amount of oil is reserved in 13, there is little risk of inhaling air even if the vehicle 1 is inclined in the front, rear, left and right directions.

Further, there is a clearance 17 just above the outlet 14A and the recess 1
3 is provided with an anti-foaming plate 18, and the anti-foaming plate 18 has a recess 13
Since the front and rear of the vehicle traveling direction are fixed, and the communication port 19 that connects the tank 11 and the recess 13 is formed on either the left or right of the vehicle traveling direction or both, the impact caused by the flow of oil in the recess 13 The air bubbles generated in (3) are not immediately sucked into the take-out port (14), and in combination with suppressing foaming, air suction is surely prevented, and there is no possibility of causing a cavitation phenomenon or the like.

[Brief description of drawings]

FIG. 1 is a vertical sectional view of an embodiment showing the essential part of the present invention, and FIG.
FIG. 1 is a rear view of an embodiment of the present invention, FIG. 3 is a sectional view taken along the line AA of FIG. 1, and FIG. 4 is an overall side view of a vehicle including a front loader. 1 ... Running vehicle, 6 ... Driver's seat, 10 ... Rear wheel fender,
11 …… Fuel tank, 14 …… Ejection port, 15 …… Ejection pipe, 17…
… Clearance, 18 …… Bubble prevention plate, 19 …… Communication port.

Claims (1)

(57) [Scope of utility model registration request] 1. Rear wheel fenders (10) behind the driver's seat (6)
A fuel tank device for a traveling vehicle in which a fuel tank (11) is mounted between (10), and a fuel holding recess (13) is provided at the bottom of the fuel tank (11).
Is formed in the recess (13), and an extraction pipe (15) having an extraction port (14) projecting above the bottom (13A) of the recess is provided, and a clearance (17) is provided just above the extraction port (14A). ) And a foam prevention plate (18) is provided in the concave portion (13), and the foam prevention plate (18) is fixed to the concave portion (13) in the front-rear direction of the vehicle and is located on either side of the vehicle traveling direction. Alternatively, a fuel tank device for a traveling vehicle, characterized in that a communication port (19) that connects the tank (11) and the recess (13) is formed on both sides.