JP2570051B2 - Industrial vehicle tank structure - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an industrial vehicle such as a forklift, and more particularly to a tank structure for storing hydraulic oil and fuel.

[0002]

2. Description of the Related Art A conventional general forklift has a structure in which a fuel tank and a hydraulic oil tank are provided between front and rear fenders on both sides of a vehicle body. FIG. 3 and FIG. 4 show a frame-integrated tank structure found in a conventional forklift large vehicle. As shown, the tank 21
Is a sealed rectangular box that is long in the front-rear direction by a main frame 22 extending in the front-rear direction, a side frame 23 having a substantially U-shaped cross section disposed outside the main frame 22, and front and rear fenders 24 and 25. It is configured in shape. A first step 27 and a second step 28 are welded between the side frame 23 and the front and rear fenders 24 and 25 on the side surface of the tank 21 for getting on and off the operator's cab 26 (cabin). It has become.

[0003]

By the way, in forming the first step 27 and the second step 28, a predetermined foot space (width and depth) is required in consideration of getting on / off and safety. Becomes As a result of securing such a foot space, the lateral width of the tank 21 is reduced, so that securing of the tank capacity becomes difficult. In the case of a fuel tank, this causes a problem that the operating time of the vehicle until refueling is short, and in the case of a hydraulic oil tank, the effect of cooling the hydraulic oil temperature deteriorates. On the other hand, if the tank capacity is to be forcibly increased, the tank capacity must be increased in the vehicle width direction due to restrictions in the front-rear direction and the vertical direction, and as a result, a predetermined foot space cannot be secured for the steps. For this reason, in the conventional tank structure, it is a fact that one of the tank capacity and the foot space must be sacrificed. Further, since the second step 28 is welded to the corner portions of the side frame 23 and the front and rear fenders 24 and 25 in a substantially triangular shape as shown in the figure, the appearance is poor and the strength is problematic. In a vehicle of a type in which the driver's cab 26 is protected by a head guard 29 as shown in FIG.
Although the upper surface of the tank between 0 has a foot space that can be used as the second step, this foot space cannot be secured in a cabin-specification vehicle. Therefore, in practice, it is common practice to weld the second step 28 so that it can be used for both specifications.

In the conventional tank structure as described above, for example, the first step 27 and the second step 2
It is also conceivable to increase the tank capacity by increasing the width of the rear part of the tank by setting each of the tanks 8 near the front fender 24 and forming the tank 21 so that the planar shape of the side part becomes a key. However, when such a structure is employed, not only does the appearance deteriorate, but also the side frame 23 itself requires extra bending and welding,
Productivity will suffer.

In view of the above circumstances, an object of the present invention is to provide a tank structure for an industrial vehicle that can increase the tank capacity without impairing the foot space.

[0006]

Means for Solving the Problems In order to solve the above problems, the present invention is configured as follows. That is, a tank is disposed between the front and rear fenders on both sides of the vehicle body, and a tank structure of an industrial vehicle in which a first step for getting on and off is provided on a side surface of the tank.
The width of the rear end is substantially the same as the width of the rear fender, and the width of the front end is the width leaving the depth required for the first step, and the planar shape is formed in a substantially trapezoidal shape that is long in the front and rear, A substantially trapezoidal first step is set at the lower part of the space formed between the side surface of the tank and the front fender within the range of the vehicle width, and the upper surface of the tank is set to the second position.
It is characterized in that it is configured to also be used as a step.

[0007]

In the tank structure according to the present invention configured as described above, the tank is formed in a substantially trapezoidal box shape having a long front and rear plane shape, so that the capacity is increased in a form in which the tank width is widened outward. And the width of the front side of the tank is set to the same width as the conventional one, so that the first step installed here can secure a predetermined foot space. Become. In addition, since the upper surface of the side frame is increased by substantially widening the tank width, it is possible to secure a necessary foot space as a second step even in the case of a cabin specification vehicle on the upper surface. .

[0008]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be specifically described below with reference to the drawings. FIG. 1 shows a frame-integrated tank structure according to this embodiment, and FIG. 2 shows a cross section thereof. In the drawing, only one (left side) tank structure is shown, but the opposite side is similarly configured.
As shown in the figure, tanks 1 installed on both right and left sides of the vehicle body
Is a vertical main frame 2 extending in the front-rear direction.
A side frame 3 having a substantially U-shaped cross-section, which is disposed outside the main frame 2 and extends in the front-rear direction, and fenders 4 and 5 disposed before and after the side frame 3. Are joined to each other by welding.

The side frame 3 is formed in a sealed rectangular box shape which is long in the front and back and has a substantially trapezoidal planar shape. That is, the lateral width of the side frame 3 at its front end is about half of the front fender 4, that is, the width is the same as or slightly smaller than the conventional one, and
The rear end of the rear fender 5 is formed in a substantially trapezoidal shape in which the lateral width of the rear end fender 5 is the full width. Therefore, the side plate portion 3a of the side frame 3, which constitutes the outer wall of the tank 1, extends obliquely forward and backward.

On the other hand, the first step 6 installed for getting on and off the driver's seat 8 utilizes the plane space of the space formed between the front fender 4 and the side frame 3 within the range of the vehicle width. Is set. The first step 6 consists of the lower part of the rear surface of the front fender 4 and the side frame 3
The rear length is set at an appropriate position, for example, near the middle between the front and rear fenders 4 and 5. Therefore, the first step 6 is formed in a substantially trapezoidal planar shape. The second step 7 is set on the upper surface of the side frame 3. That is, the second step 7 is configured to be shared by the upper surface of the side frame 3 constituting the upper wall of the tank 1.

[0011] The tank 1 of the present embodiment configured as described above.
In FIG. 1, if the width of the front end is A, the width of the rear end is B, the front and rear length is C, and the height is H, the front and rear width is A, the front and rear length is C, and the height is H. Tank capacity is 容量 (BA) × C ×
It increases by the amount of the triangular box represented by H｝ ÷ 2. On the other hand, in the first step 6, since the depth of (BA) is ensured on the front side and slightly reduced toward the rear side, the foot space required for the step can be relatively easily achieved. . Further, since the upper surface of the side frame 3 which also serves as the second step 7 is enlarged by protruding outward by a trapezoidal shape, a foot space corresponding to the conventional second step 28 can be provided even in the case of the cabin specification. It is possible to secure. Thus, according to the tank structure of the present embodiment, the first and second steps 6, 7
In addition, the required foot space is secured as a step, and the tank capacity is increased.

In the above description, the width of the front end of the tank 1 is the same as that of the prior art.
It is possible to increase the tank capacity even if is set slightly narrower, and in that case, the depth of the first step 6 can be increased. However, when the tank 1 is formed so as to have a substantially trapezoidal planar shape as described above, a refreshing feeling can be obtained in design and a good appearance can be obtained as compared with a case where the tank 1 is formed into a planar key shape, for example. In addition, since unnecessary bending and welding are not required for the side frame 3, the productivity is good and the cost is advantageous.

[0013]

As described in detail above, according to the present invention,
The tank capacity can be increased while securing the necessary foot space as a step for getting on and off. Therefore, the operation time of the vehicle can be extended in the case of the fuel tank, and the cooling effect of the hydraulic oil temperature can be enhanced in the case of the hydraulic oil tank, without impairing the getting on / off and safety. . Further, there is an advantage that not only the appearance in design can be improved, but also the cross-sectional area of the tank increases, which helps to increase the rigidity of the entire frame.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a tank structure according to an embodiment of the present invention.

FIG. 2 is a sectional view of the same.

FIG. 3 is a perspective view of a conventional large forklift.

FIG. 4 is a perspective view showing a conventional frame-integrated tank structure.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Tank 2 ... Frame 3 ... Side frame 4, 5 ... Fender 6 ... 1st step 7 ... 2nd step

Claims (1)

(57) [Claims] 1. A tank structure for an industrial vehicle in which a tank is disposed between front and rear fenders on both sides of a vehicle body and a first step for getting on and off is provided on a side surface of the tank. The width of the portion is substantially the same as the width of the rear fender, and the width of the front end is a width leaving a depth required for the first step, and the plane shape is formed in a substantially trapezoidal shape which is long in the front and rear directions. A tank for an industrial vehicle having a configuration in which a substantially trapezoidal first step is set in a lower portion of a space formed between the tank side surface and the front fender within the range of and a tank upper surface is also used as a second step. Construction.