JP2583944Y2 - Construction machinery - Google Patents

Description

[Detailed description of the invention]

[0001]

The present invention relates to a hydraulic excavator,
The present invention relates to a construction machine such as a mechanical shovel and a hydraulic crane, and more particularly to a construction machine in which the strength of an oil storage tank such as a hydraulic oil tank or a fuel tank provided in a construction machine body is increased.

[0002]

2. Description of the Related Art A hydraulic excavator will be described as an example of a conventional construction machine with reference to FIGS.

[0003] In the drawings, reference numeral 1 denotes a lower traveling body, and 2 denotes an upper revolving body rotatably provided on the lower traveling body 1. The upper revolving body 2 is connected to the lower revolving body via a revolving device (not shown). A turning frame 3 rotatably provided on the traveling body 1, a machine room 4 provided on the turning frame 3 and housing an engine, a hydraulic pump (none of which is shown), and a rear side of the machine room 4 , A counter weight 5 provided at the rear of the turning frame 3 and a driver's cab 6 and the like provided at the front left of the turning frame 3. And
A working device 7 is provided at the center of the front part of the turning frame 3 so as to be able to move up and down.

Reference numeral 9 denotes a fuel tank, which is located on the front right side of the revolving frame 3 and is provided as an oil storage tank provided on the revolving frame 3, and the fuel tank 9 is formed by pressing a metal plate into a hollow. And is exposed to the outside on the revolving frame 3. As shown in FIGS. 4 and 5, the fuel tank 9 has an upper plate 9A, a front plate 9B formed by bending the upper plate 9A, a front plate 9B and an upper plate 9A. , And includes side plate portions 9C and 9D joined to the front plate portion 9B and the upper plate portion 9A by welding or the like, and a rear plate portion and a lower plate portion (not shown). A reinforcing portion 10 is formed on the upper surface plate portion 9A of the fuel tank 9, and the reinforcing portion 10
Is formed into a rectangular projection by pressing, and a non-slip tape 11 is attached to the upper surface of the reinforcing portion 10 with an adhesive or the like.

A hydraulic oil tank 12 is provided between the machine chamber 4 and the fuel tank 9 and provided on the revolving frame 3 as another oil storage tank. In substantially the same manner, a metal plate is formed into a hollow box shape by press molding.
A reinforcing portion 13 is also formed on the upper surface plate portion 12A, and a non-slip tape 14 is attached to the upper surface of the reinforcing portion 13.

The hydraulic excavator according to the prior art has the above-described configuration. The hydraulic pump is actuated by driving the engine to rotate the upper revolving unit 2 and the working device 7.
By rotating the cradle, transportation and excavation work of earth and sand are performed.

[0007] The reinforcing portion 10 formed on the upper plate 9A of the fuel tank 9 is formed by the vibration of the engine or the like.
A prevents resonance vibration and chatter vibration from occurring, and increases the rigidity of the upper plate portion 9A. That is, even if an operator gets on the fuel tank 9 to perform operations such as refueling and maintenance, the upper plate portion 9A is prevented from being bent or depressed. Further, by attaching a non-slip tape 11 to the upper surface of the reinforcing portion 10, the worker working on the fuel tank 9 is prevented from slipping on the scaffold,
Work safety is ensured.

The upper plate 12A of the hydraulic oil tank 12
The reinforcing portion 13 and the non-slip tape 14 provided in the above-described embodiment also function similarly to the above-described reinforcing portion 10 and the non-slip tape 11 of the fuel tank 9.

[0009]

In the prior art described above, the plate portions 9A, 9B,
9C, 9D, etc. use thin metal plates to reduce the weight and cost of the fuel tank 9. The strength of the thin metal plate is low, and when an operator rides on the fuel tank 9, the metal plate is bent or depressed.
Is formed with a reinforcing portion 10 to compensate for insufficient strength of the upper plate portion 9A. However, the upper plate 9 of the fuel tank 9
Providing only one reinforcing portion 10 in A is not enough to compensate for the lack of strength over the entire upper surface plate portion 9A. For example, when the volume of the fuel tank 9 is large,
Accordingly, the area of the upper surface plate portion 9A also increases, and even if one reinforcing portion 10 is provided, the central portion of the upper surface of the reinforcing portion 10 is bent or a portion where the reinforcing portion 10 is not formed is depressed. There is a problem that there is a portion where the reinforcing effect of the reinforcing portion 10 does not reach.

Further, the anti-slip tape 11 applied to the upper surface of each reinforcing portion 10 is durable, such as being deteriorated and peeled off due to dirt or rainwater, or being damaged or broken by an operator riding on it. There is a problem that the property is poor and the retention property is poor.

The present invention has been made in view of the above-mentioned problems of the prior art, and increases the rigidity of the entire metal plate forming the oil storage tank so that the metal plate may bend even when an operator gets on the oil storage tank. It is an object of the present invention to provide a construction machine that can prevent depression and prevent a worker from riding on an oil storage tank from sliding on a scaffold.

[0012]

Means for Solving the Problems In order to solve the above-mentioned problems, a feature of the structure adopted in the present invention is that an oil storage tank provided in the upper revolving unit is formed as a box-shaped container by pressing a metal plate. In the oil storage tank, a large number of uneven portions are integrally formed on the surface of a metal plate.

[0013]

As described above, by providing a large number of concave and convex portions on the surface of the metal plate of the oil storage tank, the rigidity is increased over the entire metal plate, and even if the operator gets on the oil storage tank, the fuel tank can be kept in the fuel tank. Of the metal plate can be prevented from being bent or depressed. Moreover, the surface of the metal plate becomes less slippery due to the large number of uneven portions provided on the surface of the metal plate of the oil storage tank, and the scaffold on the oil storage tank can be improved.

[0014]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to FIGS. In the present embodiment, the same components as those in the prior art shown in FIG. 3 described above are denoted by the same reference numerals, and description thereof will be omitted.

In FIG. 1, reference numeral 21 denotes a fuel tank as one oil storage tank used in the present embodiment. The fuel tank 21 is provided on the revolving frame 3 in substantially the same manner as the fuel tank 9 described in the prior art. The metal plate is formed into a hollow box shape by press molding. The fuel tank 21 has a top plate 21A and a front plate 21 made of a metal plate.
B, left and right side plates 21C and 21D, a rear plate, and a lower plate (all not shown).

Reference numerals 22, 22, ... denote an upper plate 21A, a front plate 21B, and both side plates 21C, 21D of the fuel tank 21.
And a plurality of uneven portions provided on the rear plate portion. Each of the uneven portions 22 is formed so as to have a circular upper portion by press working, and a plurality of the uneven portions 22 are uniformly arranged over the entire surface.

The hydraulic shovel according to the present embodiment has the above-described configuration, and its basic operation is almost the same as that of the prior art.

However, in the present embodiment, a large number of the uneven portions 22 are formed on the entire surface of the metal plates 21A, 21B, 21C, 21D of the fuel tank 21. Parts 21A, 21B, 21C, 2
The rigidity of the 1D and the like is increased throughout, and the fuel tank 21
Of the entire plate portions 21A, 21B, 21C, 21D, etc. can be compensated.

The uneven portions 22 formed on the upper plate 21A of the fuel tank 21 make the surface of the upper plate 21A of the fuel tank 21 less slippery and have an anti-slip effect.

Thus, in this embodiment, the fuel tank 21
The rigidity of the upper surface plate portion 21A of the fuel tank 21 is improved over the whole by forming a large number of the uneven portions 22 on the entire upper surface plate portion 21A.
0, the reinforcing portion 10
Of the central portion of the upper surface and the portion where the reinforcing portion 10 is not formed can compensate for the lack of strength. Even when the operator gets on the fuel tank 21, the upper surface plate portion 21A of the fuel tank 21 may be bent or depressed. Can be reliably prevented.

The front plate 21B of the fuel tank 21
Since the uneven portions 22 are also provided on the side plates 21C, 21D, etc., the overall rigidity of the fuel tank 21 can be improved, and the fuel tank 21 can be distorted or deformed by a strong external impact. Can be prevented.

Further, the upper plate 21A of the fuel tank 21
The uneven portions 22 provided on the fuel tank 21 make the upper surface plate portion 21A less slippery, so that a worker who rides on the fuel tank 21 works better on the platform, and has the same safety as the conventional non-slip tape 11. Can be secured.

Further, the plate portion 21 of the fuel tank 21
A, 21B, 21C, 21D, etc.
Can be easily and inexpensively formed simply by pressing a metal plate. In addition, the provision of the uneven portions 22 on the upper surface plate portion 21A eliminates the need for the conventional non-slip tape 11. Thus, workability in manufacturing the fuel tank 21 can be improved.

In the above embodiment, the fuel tank 21 has been described as an example. However, the present invention is not limited to the fuel tank 21. The function and effect can be exerted even if it is formed.

In the above embodiment, the hydraulic shovel has been described as an example of a construction machine. However, the present invention is not limited to this. For example, a fuel tank or a hydraulic oil tank may be exposed to the outside on the upper revolving unit. The present invention may be applied to a mechanical shovel, a hydraulic crane, or the like in which the oil storage tank is provided.

[0026]

According to the present invention, as described in detail above, the oil storage tank provided in the upper swing body is formed as a box-shaped container by pressing a metal plate, and the oil storage tank is provided with a surface of the metal plate. Because a number of uneven parts are integrally formed on the
The rigidity of the entire metal plate forming the oil storage tank is increased, and the metal plate can be reliably prevented from bending or depressing even when an operator gets on the oil storage tank. On the other hand, the upper surface side of the oil storage tank becomes less slippery due to the large number of uneven portions, so that a foothold of an operator riding the oil storage tank can be improved, and the safety of work can be improved.

[Brief description of the drawings]

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

FIG. 2 is a sectional view of the fuel tank shown in FIG.

FIG. 3 is an overall view showing a conventional hydraulic excavator.

FIG. 4 is a perspective view showing a conventional fuel tank.

5 is a sectional view of the fuel tank shown in FIG.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Lower traveling body 2 Upper revolving superstructure 3 Revolving frame 4 Machine room 6 Operator's cab 7 Working device 21 Fuel tank (oil storage tank) 21A Top plate 21B Front plate 21C, 21D Side plate 22 Uneven portion

Claims (1)

(57) [Scope of request for utility model registration] 1. An undercarriage, an upper revolving body that is pivotably mounted on the lower traveling body and has a machine room, an operator cab, and an oil storage tank provided on a revolving frame, and a revolving frame of the upper revolving body. In a construction machine comprising a working device provided so as to be capable of raising and lowering, an oil storage tank provided on the upper revolving unit is formed as a box-shaped container by press-molding a metal plate, and the oil storage tank is provided with a surface of the metal plate. A construction machine, wherein a number of uneven portions are integrally formed on the construction machine.