This article mainly introduces:

Luxembourg hydraulic cylinder,spring return cylinder manufacturer,spring return cylinder

(Luxembourg spring return cylinder,produced by Hengyu Hydraulic Cylinder Factory）

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

Introduction to spring return cylinder:

Before the spring return cylinder is removed, the relief valve should be loosened to reduce the pressure of the hydraulic circuit to zero, and then the power supply should be cut off to stop the hydraulic device. After loosening the oil port piping, the oil plug should be applied to plug the oil port.

Piston spring return cylinder is widely used in hydraulic transmission. When the spring return cylinder works, it mainly delivers hydraulic oil alternately to both sides of the piston in the spring return cylinder, and uses the pressure difference of hydraulic oil on both sides of the piston to realize the reciprocating movement of the piston. If you want to speed up the forward speed of the piston, the return oil in the spring return cylinder can be controlled by the valve and directly input into the inlet pipe to participate in the work of the piston to achieve rapid movement of the piston, but the thrust of the piston is reduced much.

The spring return cylinder is mainly composed of body, piston, piston rod, spring return cylinder head, spring return cylinder bottom, piston rod head and related auxiliary devices. The piston divides the spring return cylinder into two chambers, and moves reciprocally in the spring return cylinder with the help of pressure oil. In order to improve its working effect, there is no sealing ring on the piston to eliminate internal leakage, where the piston rod passes through the spring return cylinder head, due to the existence of the gap, it is easy to produce external leakage phenomenon, and the dust can enter the spring return cylinder through the gap, so the sealing device and dust prevention reason are set. At the same time, in order to eliminate the influence of eccentric load on the work of the piston, all the spring return cylinders must be provided with a considerable length of guide sleeve at the extended end of the piston rod. In addition, in the case of faster piston movement, the phenomenon of mechanical collision between the piston and the spring return cylinder bottom and the spring return cylinder head is serious, so the buffer deceleration should be set at both ends of the spring return cylinder The working medium of the spring return cylinder: because it works at room temperature, the ordinary oil-type hydraulic oil can be selected; spring return cylinder sealing device: The use of Yx sealing ring, polyurethane (PU) and polytetrafluoroethylene (PTFE) materials combined to achieve a good sealing effect; Buffer mechanism of the spring return cylinder: The buffer structure of the spring return cylinder is to prevent the piston from colliding with the spring return cylinder head at the end of the stroke.

The spring return cylinder body is commonly made of No. 20, 35, 45 seamless steel pipe, and the steel pipe is honed or rolled to achieve the roughness requirement within 0.4μm. The low pressure spring return cylinder can use 20 steel pipe, and the high pressure spring return cylinder can use 45 steel pipe.

Answers to some questions about spring return cylinder:

How to make 4 cylinders balance lifting weight at the same time?
The cost of the synchronous valve is lower, 4 cylinders need 3 synchronous valves, to be precise you can use a synchronous motor, but it is more expensive. There is another way, that is to install a throttle valve in each cylinder, respectively adjust the speed of the cylinder.

What is the reason for the hydraulic cylinder sticking out and not retracting?
There are two reasons: First, the problem with the seal, if there are two seals on the piston, the top seal is broken. Second, when the hydraulic pressure itself is designed, the rod cavity area is too small, so that the desired return force can not be achieved during the return trip. You can first check whether the coupling is damaged; Then see if the relief valve in the oil line block is blocked. If the use time is too long, it needs to be cleaned, the hydraulic oil is very dirty and can block oil block. Electromagnetic directional valves can also be checked, but the chance of problems is relatively small, unless there is a product problem.