JPH10278599A - Fuel tank structure for traveling working vehicle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve the maintenance workability by providing an auxiliary fuel tank in a space formed between an upper part of an engine and a bonnet in a machinery, in which a machine body is loaded with an engine and fuel tanks are provided in the fore and aft direction and both the engine and the fuel tanks are covered with a bonnet freely to be opened. SOLUTION: In a tractor, which is loaded with an engine 2 in the condition that the. engine 2 is openably covered with a bonnet 3 and in which a handle 4a is arranged in rear of the engine 2, a main tank 7 and an auxiliary tank 8 are provided as fuel tank, and these tanks are arranged between the engine 2 and the handle 4a in the bonnet 3. Namely, the auxiliary fuel tank 8 is provided in a space 1k, which is formed between an upper part of the rear of the engine 2 and the bonnet 3, and supported between the inside of a support frame, which is detachably fitted to the support frame 1f, and the fuel tank 7 through a vibration control material 1h. A part 80, which is provided in a lower part of the auxiliary fuel tank 8, and a port 73, which is provided in a lower part of the fuel tank 7, are connected to each other through a conduit 81.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a fuel tank structure for a traveling work machine such as a tractor.

[0002]

2. Description of the Related Art Conventionally, an engine mounted on a tractor is configured such that a fuel tank is provided in a space formed at a rear portion between the engine and a handle portion, and the engine is integrally covered with a bonnet. .

[0003]

The tractor according to the above-mentioned conventional construction merely installs a vertically long fuel tank between the engine and the handle, so that sufficient fuel can be supplied. In the event that fuel runs out, even if tilling work is being performed in the field, the work is interrupted, and the fuel is supplied by retrieving fuel for refueling. After that, there is a problem that the operation must be performed again and the operation becomes inefficient and complicated.

[0004]

In order to achieve the above object, a fuel tank structure of a traveling work machine has an engine mounted on an airframe, a fuel tank is provided in the front-rear direction, and both can be opened and closed. A traveling work machine covered with a bonnet is characterized in that an auxiliary fuel tank 8 is provided in a space formed between an upper portion of the engine and the bonnet.

[0005] The present invention is characterized in that the auxiliary fuel tank 8 is detachably attached to the fuel tank 7 via a support frame 1g. Further, the fuel tank and the bottom of the auxiliary fuel tank are communicated via a conduit, and a middle part of the conduit is detachably attached at a position substantially equal to or higher than the oil level at the time of metering. I have.

[0006]

Embodiments of the present invention will be described below with reference to the drawings. In FIG. 1, reference numeral 1 denotes a tractor provided with a fuel tank structure according to the present invention. This tractor 1 has a body 1c having front and rear wheels 1a and 1b.
The engine 2 is mounted on the hood 3 so as to be openable and closable, and a handle 4a is provided behind the hood 3 and a control unit 4 including a deck 1d, a seat 4b and the like formed flat on the fuselage 1c. A work unit 1e for mounting an optional work device such as a tilling device is provided at the rear of the machine body 1c. The control section 4 has the same arrangement structure as that of the conventional device, and is provided with a clutch pedal 5 and a brake pedal 6, which will be described later.

Next, the structure of the engine and the fuel tank will be described with reference to FIGS. The engine 2 has mufflers 20 arranged in the hood 3 in the front-rear direction. The mufflers 20 are fitted and covered with a cylindrical heat shield cover 21 having a ventilation gap 22 therebetween. A cover portion 25 which is formed in a dish shape and is provided at an end of a tail pipe 23 is fixed to a front edge of the tail pipe 21, and a ventilation gap 22 a that communicates with the ventilation gap 22 is formed to cover the exhaust port 26.

With this configuration, the air a in the ventilation gaps 22 and 22a is sucked by the exhaust air b in which the exhaust of the engine 2 is exhausted through the muffler 20 and the tail pipe 23, and the hot air c in the bonnet 3 Is exhausted to the outside of the machine together with the exhaust air b, so that overheating of the engine 2 can be prevented well. Further, as shown in FIG. 3, the structure of the fuel tank includes a main fuel tank 7 and an auxiliary fuel tank 8, and is disposed in the bonnet 3 between the engine 2 and the handle 4a.

The fuel tank 7 is supported by a support frame 1f formed also as a heat shield from the body 1c. The fuel tank 7 has an oil supply cap 70 at an upper part and an oil feed pipe 71 to the engine 2 at a lower part. A fuel gauge 72 indicating the amount of oil stored is provided on a display panel formed on the bonnet 3 near the handle 4a. The auxiliary fuel tank 8 includes a bolt 1 on the upper part of the support frame 1f as a heat shield.
A vibration isolator 1h made of a rubber plate or the like is interposed between the inside of an L-shaped support frame 1g detachably attached at t and the upper front side surface of the fuel tank 7.

The auxiliary fuel tank 8 is a small space 1 formed between the upper rear portion of the engine 2 and the bonnet 3.
and a port 80 through which fuel is taken in and out is provided at a lower portion of the auxiliary fuel tank 8, and the port 80 and a port 73 provided at a lower portion of the fuel tank 7 are provided. They are connected via a flexible conduit 81. The upper portions of both tanks 7 and 8 are connected by an air breather pipe 82.

A conduit 81 connecting the two tanks 7, 8
Is mounted on a side wall of the auxiliary fuel tank 8 at a fuel upper limit level side by a mounting member 83 so as to be freely detachable. When refueling, the pipe 81 is detached from the mounting member 83 and is lowered. Then, the fuel supplied from the refueling cap 70 is supplied to the auxiliary fuel tank via the conduit 81. Then, when the conduit 81 is set to the oil feeding position removed from the attachment 83,
The fuel in the auxiliary fuel tank 8 is supplied into the fuel tank 7 and supplied to the engine 2 through the oil supply pipe 71,
The configuration is such that switching between the two positions can be easily performed.

According to the present invention, when the fuel tank 7 runs out of fuel in the middle of the work, the conduit 81 is detached from the fixture 83 to be in the oil feeding position. The fuel in the fuel tank 8 is
The fuel tank 7 can be easily replenished via 1. Therefore, there is no need to perform a complicated and inefficient replenishment operation such as stopping the tractor 1 in a field and refueling, as in the conventional device. The replenishing operation can be performed simply and efficiently by moving the airframe up to this point.

When the auxiliary fuel tank 8 is installed, the auxiliary fuel tank 8 is detachably attached by utilizing a space 1k formed between the upper part of the engine 2 and the fuel tank 7 in the bonnet 3 as shown in FIG. Therefore, the extension of the auxiliary fuel tank 8 can be performed freely. When it is desired to open the bonnet 3 and perform maintenance work on the engine 2, the auxiliary fuel tank 8 can be removed and the upper part of the engine 2 can be largely opened by loosening the bolt 1 t of the auxiliary fuel tank 8. Therefore, there is an advantage that the maintenance work of the engine 2 can be easily performed.

In this case, the formed flexible conduit 81 can freely and temporarily place the auxiliary fuel tank 8 upward or laterally without removing it from the tanks 7 and 8. The conduit 81 is not limited to the one that switches the oil supply with the fixture 83 as shown in FIG. 3, and the fuel storage attitude and the oil supply position are set in the middle or the base side of the conduit 81 without the fixture 83. Means such as a valve for switching to the attitude may be provided. In addition to the above-described fuel tank structure, when it is desired to equip the body with spare fuel, the rim portion 1L of the large-diameter rear wheel 1b is used as shown in FIG. A spare fuel tank 85 having a donut-shaped supply / discharge plug 85a formed so as to be fittable in the portion K may be provided detachably via a mounting screw 86.

Next, the construction of the clutch pedal 5 and the brake pedal 6 will be described with reference to FIGS.
As shown in FIGS. 5 and 6, the clutch pedal 5 is
A fixed pedal 52 is fixed to the lower end of a petal arm 51 pivotally supported via a pedal shaft 50, and a movable pedal 55 is attached to the fixed pedal 52 via a hinge 53 and a support piece 54 as shown by a chain line in FIG. It is configured to be switchable between a posture and a folding posture indicated by a solid line. In addition, the movable pedal 55 can be held in the folded posture by the fixture 56 rotatably provided on the fixed pedal 52 shown in FIG. 6 and the rod-shaped fixture 56a provided on the movable pedal 55 side.

With this configuration, when the movable pedal 55 is deployed to the working posture, the area of the tread portion can be increased, and the tread operation can be performed lightly and accurately. Further, when the movable pedal 55 is in the folded position, the space for getting on and off the deck 1d can be widened, and the getting on and off can be performed without any trouble. In the brake pedal 6 shown in FIG. 7, a pair of left and right pedals 60 and 61 provided by a configuration similar to that of a conventional device are releasably connected by a connecting piece 62, and a color is further added on the connecting piece 62. A tube 63 made of rubber or plastic material is fitted and fixed so that the connecting piece 62 does not come off. With this configuration, the tube 63 can clearly recognize the connection state between the left and right pedals 60 and 61 and can frictionally hold the connection piece 62.

[0017]

As described above, according to the fuel tank structure of the traveling work machine of the present invention, by providing the auxiliary fuel tank in the space formed between the engine and the bonnet,
An auxiliary fuel tank can be provided in the fuel tank, and the amount of fuel can be increased. Further, when the maintenance work of the engine is performed with the hood 3 opened, the auxiliary fuel tank can be easily removed, so that the maintenance work can be easily and efficiently performed by widely opening the upper part of the engine.

Further, since the support frame for mounting the auxiliary fuel tank is also removed, the upper part of the engine can be widely opened, thereby facilitating maintenance work. Also, by connecting the conduit connecting the fuel tank and the auxiliary fuel tank detachably to the oil level at the time of the fixed amount of the auxiliary fuel tank, the connection structure can be simplified and the removal of the auxiliary fuel tank can be simplified. It can be performed well.

[Brief description of the drawings]

FIG. 1 is a side view of a tractor embodying the present invention.

2A is a side view showing a configuration of a muffler in a hood, and FIG. 2B is a side sectional view of the muffler.

FIG. 3 is a side view of a fuel tank structure.

FIG. 4 is an explanatory diagram showing a relationship between a tractor and an auxiliary fuel tank.

FIG. 5 is a side view of the clutch pedal.

6A is a plan view of a clutch pedal, FIG. 6B is a side view of FIG. 6A, and FIG. 6C is a front view of FIG.

FIG. 7 is a plan view of a brake pedal.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Tractor (traveling work machine) 1c Airframe 2 Engine 3 Bonnet 7 Fuel tank 8 Auxiliary fuel tank 81 Pipe

Claims (3)

[Claims] 1. A traveling work machine 1 in which an engine 2 is mounted on a body 1c, a fuel tank 7 is provided in a front-rear direction, and both are covered by a hood 3 which can be opened and closed. 3. A fuel tank structure of a traveling work machine in which an auxiliary fuel tank 8 is provided in a space 1k formed between the fuel tank 3 and the vehicle. 2. The fuel tank structure for a traveling work machine according to claim 1, wherein the auxiliary fuel tank 8 is detachably attached to the fuel tank 7 via a support frame 1g. 3. The fuel tank 7 and the bottom of the auxiliary fuel tank 8 communicate with each other via a conduit 81, and a middle part of the conduit 81 is disengaged at a position substantially equal to or higher than the oil level at the time of metering. The fuel tank structure for a traveling work machine according to claim 1 or 2, wherein the fuel tank structure is mounted as possible.