This article mainly introduces:

Republic of Lithuania hydraulic cylinder,servo hydraulic cylinder manufacturer,servo hydraulic cylinder

(Republic of Lithuania servo hydraulic cylinder,produced by Hebei Hengyu company）

servo hydraulic cylinder are widely used in Republic of Lithuania，because of long service life，no need for deceleration device，smooth movement.So our company has designed servo hydraulic cylinder for customers from Republic of Lithuania.

Introduction to servo hydraulic cylinder:

If the servo hydraulic cylinder operation failure, you can start from these aspects to troubleshoot: (1) the hydraulic system control pressure is too low. The throttling resistance in the control line may be too large, the flow valve is improperly adjusted, the control pressure is inappropriate, and the pressure source is disturbed. At this time, the control pressure source should be checked to ensure that the pressure is adjusted to the specified value of the system; (2) Air enters the hydraulic system. Mainly because there is a leak in the system. At this time, check the liquid level of the hydraulic tank, the seals and fittings on the oil suction side of the hydraulic pump, and whether the oil suction filter is too dirty. If so, the hydraulic oil should be replenished, seals and fittings should be treated, and the coarse filter element should be cleaned or replaced. (3) The initial action of the servo hydraulic cylinder is slow. In the case of low temperature, the hydraulic oil viscosity is large, poor flow, resulting in slow servo hydraulic cylinder action. The improvement method is to replace the hydraulic oil with better viscosity and temperature performance If the servo hydraulic cylinder is weak and cannot push the load, please check the internal leakage problem. The internal leakage of the servo hydraulic cylinder includes the leakage caused by excessive wear of the servo hydraulic cylinder block seal, the piston rod and the seal cover seal and the piston seal. The cause of sealing leakage between the piston rod and the seal cover is that the seal is wrinkled, squeezed, torn, worn, aging, deterioration, deformation, etc., and a new seal should be replaced at this time. The main cause of excessive piston seal wear is improper adjustment of the speed control valve, resulting in excessive back pressure and improper seal installation or hydraulic oil contamination. The second is that foreign bodies enter the assembly and the quality of sealing materials is not good. The result is that the action is slow and weak, and in serious cases, it will cause damage to the piston and servo hydraulic cylinder, and the phenomenon of "pulling the servo hydraulic cylinder" appears. The treatment method is to adjust the speed control valve, and the necessary operations should be done according to the installation instructions.

servo hydraulic cylinder head explanation: low pressure castings, medium and low pressure with HT300 gray iron, medium and high pressure with 35, 45 steel. When the servo hydraulic cylinder head itself is the guide sleeve of the piston rod, the servo hydraulic cylinder head is best cast iron. At the same time, brass, bronze or other wear-resistant materials should be fused on the guide surface. If the guide sleeve is pressed into the servo hydraulic cylinder head, the guide sleeve shall be wear-resistant cast iron, bronze or brass.

servo hydraulic cylinder buffer valve inspection and maintenance: For the valve buffer servo hydraulic cylinder, the focus should be on checking the wear of the buffer valve spool and seat. Once it is found that the amount of wear increases and the seal fails, it should be replaced. It can also be repaired by using abrasive spool and seat matching grinding method.

Causes and countermeasures of oil servo hydraulic cylinder leakage: Cast iron ring seal allows a certain degree of internal leakage. The impurities in the servo hydraulic cylinder will lead to premature wear of the piston seal, replace the piston seal; If the servo hydraulic cylinder is visibly scarred, the servo hydraulic cylinder must be replaced. It can be pressurized at one end of the servo hydraulic cylinder and opened at the other end of the oil port to observe whether there is obvious internal leakage at the end of the oil port. Most servo hydraulic cylinder piston drift may not come from the servo hydraulic cylinder, the above method to determine the servo hydraulic cylinder without internal leakage is helpful to determine the problem of the hydraulic system related components.

Answers to some questions about servo hydraulic cylinder:

Why does the tipping bucket cylinder have a cylinder withdrawal problem?
This problem may have a certain relationship with the operation of the driver, the main reasons are the following two situation analysis: 1, the current domestic loader working device is mostly a six-link mechanism, the six-link mechanism in the bucket to the limit position, lift the boom, the rotating bucket cylinder will appear "cylinder pulling" phenomenon, that is, the piston rod of the rotating bucket cylinder will be pulled out. In this case, in order to protect the cylinder, a pressure overload protection valve with large and small cavities is provided on the multi-way valve rotating bucket link (large chamber 18MPa, small chamber 12MPa). 2, before the cylinder is assembled to the whole machine, the cylinder is not limited, the piston rod of the cylinder can be pulled in place before and after, but when it is installed on the whole machine, in order to avoid the cylinder pulling out, the limit switch is installed according to the regulations.

How to use a solenoid valve to control the expansion of a cylinder? Doesn't the solenoid valve only control on/off?
Use the solenoid valve P into A-B (generally equipped with oil circuit board) to connect the oil inlet interface at both ends of the cylinder, and the solenoid valve can be realized by power off (refer to the solenoid valve 2B2L, different solenoid valve actions are different).