Hoist System Troubleshooting
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图 1 | g02422376 |
(1) 齿轮泵(举倾) (2) 出口侧 (3) 进口侧 |
使用性能测试可以诊断不良性能和查找液压系统内部的机油泄漏来源。
问题:齿轮泵(举倾)发出噪音或油缸连杆移动不平稳。 另外,油内还有气泡。
可能的原因
- 控制阀(举倾)内的低压安全阀在低油压下打开。
- 控制阀(举倾)内的高压安全阀在低油压下打开。
- 齿轮泵(举倾) (1) 进口侧 (3) 上的油管内有连接松动。
- 齿轮泵(举倾) (1) 过度磨损。
故障:油温太高。
可能原因
- 油的粘度不正确。
- 控制阀(举倾)内的低压安全阀在低油压下打开。
- 控制阀(举倾)内的高压安全阀在低油压下打开。
- 齿轮泵(举倾) (1) 过度磨损。
- 油道发生阻塞。
- 系统负载过高。
问题:齿轮泵(举倾)的输出过低。
可能的原因
- 液压油箱的油位过低。
- 油的粘度不正确。
- 齿轮泵(举倾) (1) 过度磨损。
故障:油压过低。
可能的原因
- 控制阀(举倾)内的低压安全阀在低油压下打开。
- 控制阀(举倾)内的高压安全阀在低油压下打开。
- 齿轮泵(举倾) (1) 过度磨损。
- 液压系统中有一个 O 形密封圈失效。
问题:车斗无法降下。
可能的原因
- 位于飞轮壳体上的发动机转速传感器有故障。
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