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Excavator repairing method

An excavator and engine technology, applied in the field of excavator maintenance, can solve the problems of weak excavation, decreased engine speed, slow working speed, etc.

Inactive Publication Date: 2019-06-18
江苏曜曜机械科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Generally, in excavator operations, these aspects cannot be matched, and it often manifests as: engine speed drops, working speed slows down, weak excavation and some common problems

Method used

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Examples

Experimental program
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Embodiment Construction

[0007] The method of the present invention 1. When the engine speed drops, at first the output power of the engine itself will be tested. If the output power of the engine is lower than the rated power, the cause of the failure may be poor fuel quality, low fuel pressure, wrong valve clearance, or a certain cylinder of the engine. Work, wrong fuel injection timing, incorrect fuel volume settings, air leaks in the intake system, faulty brakes and their levers, and turbocharger carbon deposits. If the output power of the engine is normal, it is necessary to check whether the flow of the hydraulic pump does not match the output power of the engine. The speed of the hydraulic excavator is inversely proportional to the load during operation, that is, the product of the flow rate and the output pressure of the pump is an invariant, and the output power of the pump is constant or approximately constant. If the pump control system breaks down, the optimal load matching state of the en...

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PUM

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Abstract

The invention discloses an excavator repairing method. According to the excavator repairing method, by analyzing excavator operation, a plurality of aspects cannot be matched, it is often shown by thefollowing phenomena: the rotating speed of an engine decreases, the working speed is slow, mining is impotent, and some common problems occur. According to the excavator repairing method, fault can be immediately removed when the fault occurs.

Description

technical field [0001] The invention relates to the mechanical field, in particular to an excavator maintenance method. Background technique [0002] With the advancement of science and technology, modern excavators generally adopt the electromechanical-hydraulic integrated control mode. When troubleshooting some faults, most of them solve the matching problems of the engine, hydraulic pump, distribution valve and external load. Generally, in excavator operations, these aspects cannot be matched, and it often manifests as: engine speed drops, working speed slows down, weak excavation and some common problems. Contents of the invention [0003] In order to solve the above problems, the present invention provides an excavator maintenance method. [0004] Method 1. When the engine speed drops, first test the output power of the engine itself. If the output power of the engine is lower than the rated power, the cause of the failure may be poor fuel quality, low fuel pressure,...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E02F9/26
Inventor 不公告发明人
Owner 江苏曜曜机械科技有限公司