This article mainly introduces:

Costa Rica hydraulic cylinder,reset cylinder manufacturer,reset cylinder

(Costa Rica reset cylinder,produced by Hengyu Hydraulic Cylinder Factory）

reset cylinder are widely used in Costa Rica，because of excellent fatigue and impact resistance，no need for deceleration device，long service life.So our company has designed reset cylinder for customers from Costa Rica.

Introduction to reset cylinder:

In the hydraulic system, sometimes the inner layer of the rubber hose is peeled off, so that the oil circuit is on and off, resulting in irregular reset cylinder action. Troubleshooting method: Replace the rubber hose.

When the reset cylinder is installed on the main engine, the oil port piping part and the guide sleeve should be checked for oil leakage in the running test, and the earring and the middle hinge shaft bearing should be refueled.

If the reset 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 reset cylinder is slow. In the case of low temperature, the hydraulic oil viscosity is large, poor flow, resulting in slow reset cylinder action. The improvement method is to replace the hydraulic oil with better viscosity and temperature performance If the reset cylinder is weak and cannot push the load, please check the internal leakage problem. The internal leakage of the reset cylinder includes the leakage caused by excessive wear of the reset 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 reset cylinder, and the phenomenon of "pulling the reset cylinder" appears. The treatment method is to adjust the speed control valve, and the necessary operations should be done according to the installation instructions.

The reset cylinder should be used as far as possible to avoid the transverse force, sometimes the piston rod to bear the transverse load is too large, especially do not force or pull the reset cylinder, bite. Elimination method: When installing the reset cylinder, ensure that the axis position of the reset cylinder is consistent with the direction of movement; Make the load borne by the reset cylinder as far as possible through the reset cylinder axis, to avoid the phenomenon of eccentricity.

Answers to some questions about reset cylinder:

How to calculate the speed of cylinder weight decline?
To reduce the weight of the cylinder, the necessary condition is that the weight of the piston rod + external load is greater than the friction between the seal ring and the cylinder. There are many reasons for this, first of all, consider the reasons of the cylinder itself, the piston in the cylinder and the sealing ring on the piston rod will play a reaction force on the weight of the cylinder (because of friction), which depends on the tightness of the sealing ring and the cylinder. Secondly, what is connected under the piston rod of the cylinder and how much weight there is. And the way the cylinders are arranged, is it completely vertical. Anyway, in fact, the most important thing is to see how much the bore of the oil hole of the piston rod cavity of your cylinder is. For example, if the hole in the lower chamber of the cylinder is small, as thin as a needle, then its descent rate will be slow.

Why can't the hydraulic cylinder be pulled back after pushing to the limit?
May be long-term use to the limit position, resulting in serious wear caused! The solution is to add the stroke switch or disassemble and add gaskets before and after the piston.