This article mainly introduces:

Latvia hydraulic cylinder,lift car cylinder manufacturer,lift car cylinder

(Latvia lift car cylinder,produced by Hebei Hengyu company）

lift car cylinder are widely used in Latvia，because of no transmission clearance，powerful torque，clever hydraulic energy conversion.So our company has designed lift car cylinder for customers from Latvia.

Introduction to lift car cylinder:

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

If the seal of the lift car cylinder is softened and sticky, it may be that the seal is incompatible with the hydraulic oil or the nearby lubricating oil, replace the appropriate seal; If the seal becomes hard and loses elasticity, most of it is because the ambient temperature is too high (more than 80 ° C), make appropriate temperature insulation protection or replace the high temperature seal.

Under normal circumstances, the lift car cylinder is composed of the rear end cover, body, piston, piston rod and front end cover and other main parts. In order to prevent the working medium from leaking out of the lift car cylinder or from the high pressure chamber to the low pressure chamber, a sealing device (sealing ring) is arranged between the lift car cylinder and the end cover, the piston and the piston rod, the piston and the lift car cylinder, the piston rod and the front end cover. A dustproof device is also provided on the outside of the front end cover. In order to prevent the piston from impacting the end cap when it moves rapidly to the end of the stroke, the end of the lift car cylinder can also be provided with a buffer device. If necessary, the exhaust device should be set in order to exhaust.

When the piston speed of the lift car cylinder is high, the steel ball of the check valve flows with the oil flow, so that the valve hole is blocked, and the lift car cylinder moves irregularly. Elimination method: Replace the steel ball with a cone valve or spool with a guide shoulder.

Answers to some questions about lift car cylinder:

How to limit cylinder push rod rotation?
In general, the push-rod rotation can be limited after the push-rod is connected to the pushed mechanism. For example, the push rod is hinged with the push mechanism, or the push mechanism itself is guided, which can limit the rotation of the push rod.

Servo cylinder control principle
The electro-hydraulic pulse servo cylinder is composed of a stepper motor, a three-position four-way servo valve, a mechanical feedback device (a wire carrier) and an oil lever. When the stepper motor gets a pulse signal, its output shaft rotates 1.5 or 3 degrees, the servo valve spool drives the wire to rotate at the same time, the valve spool moves and opens the reversing cylinder to output pressure oil, the piston moves and drives the lead screw to reverse rotate the valve spool back to the original position, and the servo valve stops output pressure oil in the center. At this time, the cylinder moves 0.1 or 0.2mm stroke, and the displacement and speed of the cylinder travel are determined according to the given value of the electrical pulse.