JP2000225856A - Oil storage device for construction machinery - Google Patents

Abstract

(57) [Problem] To provide an oil storage device for a construction machine that can be designed to match the appearance of an adjacent portion of an installation portion without increasing the manufacturing cost. SOLUTION: In an oil storage tank 10 mounted on a construction machine, an upper surface 13 is formed as a gentle convex curved surface via an outer surface 11 and a convex curved corner 12 in an installed state.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an oil storage device mounted on a construction machine such as a hydraulic shovel or a bulldozer.

[0002]

2. Description of the Related Art An oil storage tank (for fuel or hydraulic oil) in a hydraulic shovel or bulldozer, which is a typical construction machine, has a function as a tank such as capacity and strength based on the simplest hexahedron shape. , Appearance design, visibility, serviceability, etc., were determined in terms of both body functions apart from the original functions of the tank.

[0003] With respect to such a technology relating to an oil storage tank mounted on a construction machine, for example, Japanese Utility Model Application Laid-Open No. 58-1
Japanese Patent No. 53253 describes that a configuration in which an outer surface is inflated and installed on a revolving base by a side plate of a revolving base and a bracket for mounting a cylinder is provided so as to be able to restrict lateral vibration due to vibration. ing.

Further, Japanese Utility Model Registration No. 2582239 discloses that the outer surface of an oil storage tank is a convex curved surface, a corner portion connecting the convex curved surface to the upper surface is a curved surface, and the flat surface of the upper surface is a bottom plate. The length of the front revolving body is shorter than the length in the front-rear direction of the upper revolving body. It is described that it can be improved and that it has effects such as improvement in appearance.

Further, Japanese Utility Model Laid-Open Publication No. Sho 56-98624 discloses a tank in which a corner portion is formed into a curved surface. Further, Japanese Utility Model Laid-Open No. 60-157533 discloses a dam which is formed so that oil spilled around an oil supply port provided in the tank body does not diffuse to the surface of the tank body, has a bulge on the upper surface, and further has a dam. An opening is provided in the opening, and the oil that diffuses flows down from the opening to the ground.

[0006]

In such a prior art, the structure disclosed in Japanese Utility Model Application Laid-Open No. 58-153253 has the effect of suppressing the roll due to vibration for the purpose. However, there is a problem that it lacks adaptability to the external design seen in recent construction machines. Further, the configuration shown by the above-mentioned Utility Model Registration No. 2582239 is effective in terms of design and is described as being effective in that the whole can be made thin, but the outer surface has a curved shape. Because of this, if the top surface is flat, it looks visibly hollow in the middle, has the disadvantage that it does not look good and makes the oil storage tank poor, and the top surface is spilled by fuel spills during refueling and the pool of car wash water. There is a problem of getting dirty.

[0007] Further, in the construction disclosed in Japanese Utility Model Laid-Open No. 60-157533, a weir is provided and inflated to prevent fuel spillage at the time of refueling from diffusing to the surface of the tank. Such a structure is effective in a small oil storage tank because a large amount of work is required for molding, and is uncommon because an oil storage tank of a type mounted on a swivel base is expensive.

SUMMARY OF THE INVENTION The present invention has been made to solve such a problem, and it is possible to visually sense the strength without increasing the production cost and to design the design to match the appearance of the adjacent portion of the installation portion. It is an object of the present invention to provide an oil storage device for a construction machine that can perform the operation.

[0009]

In order to achieve the above-mentioned object, an oil storage device for a construction machine according to the present invention is an oil storage tank mounted on a construction machine,
The outer surface in the installation state is formed as a convexly curved surface.

With this configuration, the outer surface is formed as a convex curved surface, so that a wide surface does not appear to be depressed, and the strength is visually felt. By adjusting to the external shape of the vehicle, it is possible to improve the design of the vehicle as a whole.

Further, the outer surface of the oil storage tank is preferably formed so that the upper surface is formed as a gentle convex curved surface through the outer surface and the corner of the convex curved surface. Further, the convex curved surface of the upper surface of the outer surface is preferably formed so as to be lowered outward. In this case, in addition to visually enhancing the strength and improving the appearance design, there is an effect that the oil and the car wash water due to the oil leakage generated at the time of the oil supply flow more easily and the dirt is hardly generated. In addition, since the upper portion is formed to have a convex curved surface, there is an effect that it is difficult for the operator to be dented even if the operator goes up when performing maintenance. Further, there is an effect that the amount of accumulated snow during snowfall is reduced. Of course, at the time of manufacture, one plate can be formed by pressing and bending, so that an increase in cost can be avoided.

[0012] In the oil storage tank, a partition plate is preferably disposed inside. In this way, when the width of the oil storage tank in the width direction is large, not only the strength of the plate forming the outer surface can be increased, but also the fluctuation of the oil storage during the movement of the vehicle can be regulated, and the air due to the vibration can be restricted. This helps to prevent entanglement and prevent the effects on the equipment.

[0013]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, a specific embodiment of an oil supply device for a construction machine according to the present invention will be described with reference to the drawings.

FIG. 1 is a perspective view showing an external configuration of a hydraulic shovel as a construction machine on which the oil storage device according to the present invention is mounted, and FIG. 2 is a longitudinal sectional view of an oil storage tank as an oil storage device according to an embodiment. Have been.

The oil storage tank 10 which is the oil storage device of the present embodiment.
In the hydraulic excavator illustrated in FIG. 1, is installed at a position in front of a cover 4 on a side of the engine room 3 on an upper revolving structure 2 located above a lower traveling structure 1. The installation position of the oil storage tank 10 is the same as in the related art.

As shown in FIG. 2, the oil storage tank 10 is formed by bending a single steel plate from the outer surface 11 to the upper surface 13 through the upper corner portion 12 and further to the rear surface 14. And both side plates 17, 17
A plurality of steel plates are bent to a required size, and the outer surface 11 to the rear surface 14 are combined with the bent steel plates to be integrally formed by welding to a hexahedron.

The outer surface 11 has a gentle convex curved surface from the end of the convex curved surface at the upper corner portion 12 to the lower end. The upper surface 13 is formed as a gentle convex curved surface from the upper corner portion 12 to the rear surface 14 side corner portion 15 like the outer surface 11. It should be noted that, with respect to the convex curved surface forming radius R of the outer side surface 11 and the convex curved surface forming radius R 'of the upper surface 13, the curved surface forming radius r of the outer corner portion 12 and the curved surface forming radius r' of the rear side corner portion 15 are provided. Is formed smaller. The outer surface 11
As shown in FIG. 1, when the radius R of the convex curved surface is equal to the curved surface forming the outer shape of the counterweight 5 and the cover 4 disposed at the rear part of the upper revolving structure 2, The overall design is unified and the aesthetics can be enhanced.

The convex curved surface of the upper surface 13 forming the outer surface is preferably formed so as to descend from the top to the outer surface 11 side. By doing so, car wash water or oil spilled at the time of refueling on the upper surface 13 does not flow outward and accumulates, and dirt can be hardly generated. In the figure, reference numeral 18 denotes an oil injection port to which a cap is attached.

The oil storage tank 10 according to the present embodiment having the above-described structure has an outer surface 11 and an upper surface 1 forming an outer surface after installation.
3 are both formed on a convex curved surface, so that when a wide surface is formed on a convex curved surface, it will not visually appear concave, and the overall strength will be felt, especially as described above. By aligning the outer surface of the cover 4 or the counterweight 5 with the curved surface, the appearance is unified and the aesthetic effect is improved.

Next, as shown in FIG. 3, a partition plate 20 is attached to the inside of the oil storage tank 10 so that the oil received in the tank can It is possible to prevent swinging due to turning or vibration accompanying the traveling of the lower traveling body 1. As a result, it is possible to prevent air from being mixed into the oil, and there is an effect that the oil can be supplied without causing trouble due to air bubbles mixing into a portion supplied by a pump (not shown) connected to the oil storage tank 10. . Needless to say, the partitioning plate 20 is provided with a through hole 21 communicating with the suction side of the pump at a position not exposed to the oil surface.

Further, by disposing the middle partition plate 20 in the oil storage tank 10, the effect of utilizing the reinforcement of the outer surface 11 can be obtained.

The oil storage tank of the hydraulic shovel has been described above. However, as shown in FIG. 4, the oil storage tank of a construction machine having no revolving structure, for example, a bulldozer oil storage tank can be employed. In this case, it is installed at the center of the rear part of the vehicle body.

In the oil storage tank 10A, the outer surface 11a constituting the outer surface is formed as a gentle convex curved surface as in the above embodiment, and is slightly inclined from the upper side to the lower side. The upper surface 13a is also formed as a gentle convex curved surface via the convex curved surface, and the rear surface 14a is formed.
a is defined as an upright surface along the rear surface of the cab 5, for example.
The steel plate is formed into a hexahedral shape by welding such a bent plate and a plate formed by bending a bottom plate 16a and both side surfaces (symbols omitted) of one steel plate. It is assumed that.

The oil storage tank 10A has the same operation and effect as the oil storage tank 10 of the above embodiment. In addition,
The degree of curvature of the convex curved surface of the outer surface and the inclination of the outer surface of the oil storage tank 10A can be arbitrarily set according to the installation position of the machine to be mounted.

[Brief description of the drawings]

FIG. 1 is a perspective view showing an external configuration of a hydraulic shovel as a construction machine on which an oil storage device according to the present invention is mounted.

FIG. 2 is a longitudinal sectional view of one embodiment of an oil storage tank.

FIG. 3 is a partially cutaway perspective view of an oil storage tank provided with a partition plate.

FIG. 4 is a diagram showing an example in which an oil storage tank is mounted on a bulldozer, in which only an oil storage tank portion is sectioned;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Lower traveling body 2 Upper revolving structure 10, 10A Oil storage tank 11, 11a Outer side surface 12, 12a Upper corner portion 13, 13a Upper surface 14, 14a Rear surface 15 Rear side corner portion 16, 16a Bottom surface 17 Both side surfaces 20 Middle partition plate 21 Through hole

Claims (4)

[Claims] 1. An oil storage tank for a construction machine, wherein the oil storage tank is mounted on the construction machine, and an outer surface in an installed state is formed to have a convex curved surface. 2. The oil storage device for a construction machine according to claim 1, wherein an outer surface of the oil storage tank is formed to have a gentle convex curved surface through an outer surface and a corner portion of the convex curved surface. 3. The oil storage device for a construction machine according to claim 2, wherein the convex curved surface of the upper surface of the outer surface is formed so as to be lowered outward. 4. The oil storage device for a construction machine according to claim 1, wherein an intermediate partition plate is disposed inside the oil storage tank.