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The manufacturer of hydraulic system analyzes the operation failure of hydraulic cylinder

2022-08-24 17:13:10

If the hydraulic cylinder in the hydraulic system fails, it will have a great impact on the efficiency, so it is necessary to quickly understand the cause of the hydraulic cylinder failure.

The hydraulic cylinder is a functional part of the hydraulic system, and its operation is related to the hydraulic cylinder itself as well as the whole system. Therefore, when sorting out the operation problems of hydraulic cylinders, carefully investigate the symptoms of the problems, select logical reasoning and force one by one, carefully analyze the causes of the problems from the outside to the inside, and then determine the sorting methods to prevent blind large-scale disassembly and assembly. Among many causes of hydraulic cylinder operation problems, improper use and maintenance of hydraulic system is the cause, so this kind of problems will not be reviewed here. This paper only analyzes the typical operation problems of hydraulic cylinder.

Most of the bad actions of the hydraulic cylinder are: the hydraulic cylinder cannot move, the hydraulic cylinder is insensitive (stuck), and the hydraulic cylinder crawls.



液壓動(dòng)力單元


The manufacturer's reason analysis of hydraulic cylinder operation problems? In addition to the following basic conditions: 1. Inside diameter 2. Stroke 3. Operating pressure 4. For equipment mode, the following conditions shall be selected: a. When the operating speed of the hydraulic cylinder reaches a certain standard after loading, the hydraulic cylinder with buffer device shall be selected. Or when it reaches high speed, it is necessary to install a deceleration valve outside the hydraulic cylinder. Carefully select hydraulic oil and oil seal. In the hydraulic system, different hydraulic oils are suitable for oil seals made of different raw materials to ensure the service life of the hydraulic cylinder.

In order to reduce the cost, the piston rod is not quenched and tempered, the coating of the rod is poor, and the finish of the cylinder cannot meet the specification. The guide sleeve uses ductile iron instead of copper. Although the cost is reduced, the quality of the hydraulic cylinder is not satisfactory. In addition to the above two elements, the hydraulic cylinder shall completely meet the user's requirements, and shall be correctly used and regularly maintained. Before operation, the oil cylinder shall be bled, the buffer control valve shall be adjusted to a reasonable position, the oil cleanliness shall be checked regularly, the dust on the oil cylinder shall be cleaned regularly, and other waterproof and fire prevention measures shall be adopted. In the past 20 years, China's hydraulic profession has developed rapidly, and hydraulic cylinders can completely replace imports. According to our experience, domestic manufacturers of hydraulic cylinders for hydraulic systems have all passed the processing level of gas cylinders, and the key is the seals. Domestic seals cannot completely replace imported seals, so we propose to use imported parts for important seals.

Hydraulic cylinder operation problem, hydraulic system manufacturer cause analysis? The problem of hydraulic cylinder often occurs in the hydraulic cylinder just completed. When eliminating this problem, the first thing to do is to find out the cause from the outside of the hydraulic cylinder. Whether the hydraulic cylinder has too much resistance to moving parts, and whether it is stuck, wedged or blocked against other parts; Check whether the oil inlet pressure reaches the specified value. After disassembling the external components, further check the connotation of the hydraulic cylinder and adopt the corresponding cleaning method.

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