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Counter-weight of oil pressure excavator

An excavator and hydraulic technology, which is applied in the field of counterweight of hydraulic excavators, can solve the problem that the maintainability of the engine 13 cannot be fully ensured.

Inactive Publication Date: 2004-09-29
KOMATSU LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

As a result, there is a problem that the maintainability of the engine 13 cannot be sufficiently ensured.

Method used

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  • Counter-weight of oil pressure excavator
  • Counter-weight of oil pressure excavator
  • Counter-weight of oil pressure excavator

Examples

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Embodiment Construction

[0028] Regarding the best implementation of the counterweight of the hydraulic shovel related to the present invention, take the small rear end small rotary hydraulic shovel as an example, refer to Figure 1 ~ Figure 4 Describe in detail. First, in Figure 1 ~ Figure 3 Among them, the rear-end small rotary hydraulic excavator 1 is mounted on the upper part of the lower traveling body 3 to freely rotate the upper rotating body 10, and it is made such that the trajectory of the turning radius R of the rear end converges on the lower traveling body 3. Structure within left and right outer width B.

[0029] The upper rotating body 10 connects the counterweight 12 to the rear end portion of the rotating bracket 11 having a bottom with a predetermined number of bolts 12d. The counterweight 12 is constituted by a central base portion 12a, and pillar portions 12b, 12c protruding upward in an angular shape on the left, right, and upward sides of the base portion 12a. By using the ma...

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PUM

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Abstract

A counterweight for a hydraulic shovel, which is applicable to a compact to large-sized hydraulic shovels, and is capable of realizing favorable engine maintainability and assurance of sufficient mass, is provided. For this purpose, supporting column portions (12b, 12c) are vertically provided at left and right of a counterweight (12). The left and right supporting column portions are constituted as an increase amount of mass of the counterweight. At least one of a floor frame (30), a canopy (40), outer casings (14, 16) and engine partition walls (33a, 33b) is supported at the left and right supporting column portions. Further, an engine (13) is placed at a position fronting to between the left and right supporting column portions.

Description

technical field [0001] The invention relates to a counterweight of a hydraulic excavator. Background technique [0002] Generally, a hydraulic excavator is equipped with a working machine at the front of the upper rotating body. For the purpose of balancing with the working machine, a counterweight is arranged at the rear end of the upper rotating body, and a large mass is arranged near the front of the counterweight. engine, and an operator's seat is arranged in front of the engine. For the sake of brevity, an operator's seat is a general term for the operator's area including a seat, a floor portion on which the operator's feet are placed in front of the seat, and operating devices such as operating levers. When only referring to the seat, it is called the operator seat to make a distinction, and the same applies below. [0003] According to the above structure, since the back of the engine is plugged with the counterweight, there is a problem that the maintainability of...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E02F9/08E02F9/18
CPCE02F9/18E02F9/0833E02F9/0866
Inventor 杉山清大村纯一安藤豪修
Owner KOMATSU LTD