旧工程机械破损现象的检测以及原因和措施(Damage detection of old construction machinery and its causes and measures).doc
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旧工程机械破损现象的检测以及原因和措施(Damage detection of old construction machinery and its causes and measures)
旧工程机械破损现象的检测以及原因和措施(Damage detection of old construction machinery and its causes and measures)
Damage detection of old construction machinery and its causes and measures
After a period of use, such as bulldozers, loaders, excavators and automobile cranes, the sensitivity of the control mechanism and the slow movement of the mechanism are often present.
1 phenomena
Engine exhaust, operation, abnormal sound, difficult to start, speed is slow; hydraulic system oil contamination of hydraulic components and pipe fittings, the external and internal drainage were not serious, hydraulic cylinder locking and automatic retraction; the control handle the transmission chain loose, manipulation and laborious when block.
2 reasons
Is the long time of work overload and not in accordance with the requirements of the environment; daily maintenance is not timely, large, medium and small not up to standard requirements.
3 measures
(1) strictly manage and constantly improve the technical quality of operators, and ensure the correct use of construction machinery.
(2) strengthen the routine maintenance and inspection of equipment, and improve the rate of equipment readiness.
(3) to improve the maintenance personnel technical level and sense of responsibility, to ensure the quality of large, medium and small. Proper increase of special maintenance equipment, tools, instruments and technical data.
(4) adjust and repair the machinery
4. adjustment and repair methods
(1) adjustment of engine throttle;
For example, a diesel engine fitted with an automobile crane, after a long period of use, sometimes grows slowly and fails to reach the maximum speed and maximum power when it is operated on the car. At this point, you need to check and adjust the entire transmission chain on the pedal accelerator. The job requires two people, one in the car to control the accelerator pedal, and the other to observe the movement of the governor lever at the injection pump. For many years, the operator in the c
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