This article mainly introduces:

Germany hydraulic cylinder,lift hydraulic cylinder manufacturer,lift hydraulic cylinder

(Germany lift hydraulic cylinder,produced by Hengyu Hydraulic Co., Ltd）

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

Introduction to lift hydraulic cylinder:

The pressure of the sliding surface of the lift hydraulic cylinder piston is too large, resulting in sintering. The piston tilts due to the weight of the piston rod, resulting in the phenomenon of non-stiffness, or the pressure of the sliding surface of the piston rises due to the action of the transverse load, which will cause sintering. In the design of the lift hydraulic cylinder must study its working conditions, the length of the piston and bushing and the size of the clearance must be fully paid attention to.

The method of sleeve lift hydraulic cylinder to improve the processing quality: there is a big gap in the service life of post-plating polishing and post-plating polishing, especially in mass production. Strictly clean the flying edge and burr of mechanical components, especially the edge of the sealing groove, and the tiny metal burr, strictly clean before assembly. The surface fatigue strength and stress corrosion resistance of the lift hydraulic cylinder can be significantly improved by rolling in the finishing of the inner holes of the lift hydraulic cylinder. The roughness of the surface of the friction pair is generally controlled between Ra0.4 and 0.8.

The lift hydraulic cylinder is mainly composed of body, piston, piston rod, lift hydraulic cylinder head, lift hydraulic cylinder bottom, piston rod head and related auxiliary devices. The piston divides the lift hydraulic cylinder into two chambers, and moves reciprocally in the lift hydraulic 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 lift hydraulic cylinder head, due to the existence of the gap, it is easy to produce external leakage phenomenon, and the dust can enter the lift hydraulic 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 lift hydraulic 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 lift hydraulic cylinder bottom and the lift hydraulic cylinder head is serious, so the buffer deceleration should be set at both ends of the lift hydraulic cylinder The working medium of the lift hydraulic cylinder: because it works at room temperature, the ordinary oil-type hydraulic oil can be selected; lift hydraulic 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 lift hydraulic cylinder: The buffer structure of the lift hydraulic cylinder is to prevent the piston from colliding with the lift hydraulic cylinder head at the end of the stroke.

If the lift hydraulic cylinder is sliding or crawling (stop and go), check whether there is any astringency inside the lift hydraulic cylinder. The internal parts of the lift hydraulic cylinder are improperly assembled, the parts are deformed, worn or the shape and position tolerance is excessive, and the action resistance is too large, so that the piston speed of the lift hydraulic cylinder changes with the different stroke position, and there is slip or crawl. Most of the reasons are due to poor assembly quality of parts, surface scars or sintered iron filings, so that the resistance increases, the speed decreases. For example, the piston is different from the piston rod or the piston rod is bent, the lift hydraulic cylinder or the piston rod is offset from the mounting position of the guide rail, and the sealing ring is too tight or too loose. The solution is to repair or adjust, replace damaged parts and remove iron filings. At the same time, check whether the lubrication is good or whether the lift hydraulic cylinder bore processing is out of whack. Because the piston and lift hydraulic cylinder, guide rail and piston rod are relative If the lift hydraulic cylinder is crawling seriously, check whether air has entered the hydraulic system. Air compression or expansion can cause the piston to slip or crawl. The exclusion measures are to check the hydraulic pump, set up a special exhaust device, and quickly operate the exhaust several times in the full stroke. Check the seals at the same time, because the quality of the seals is directly related to slippage or crawling. When the O-ring is used under low pressure, compared with the U-ring, it is easy to slip or crawl because of the higher surface pressure and the larger difference between static and static friction resistance. The surface pressure of the U-shaped sealing ring increases with the increase of pressure, although the sealing effect is correspondingly improved, but the difference between static and static friction resistance is also larger, the internal pressure increases, affecting the rubber elasticity, due to the increase in the contact resistance of the lip, the sealing ring will tip over and the lip elongation, and it is also easy to cause slip or crawling lift hydraulic cylinder weight composition and calculation. The weight of the lift hydraulic cylinder is composed of the lift hydraulic cylinder diameter, the outer diameter and weight of the lift hydraulic cylinder, the rod diameter, and the weight of the accessories, so in calculation, it is to add all these together to get the specific value. However, if there are special circumstances, it may be calculated separately. This work can be carried out by yourself, but it can also be carried out by professionals, so that mistakes can be avoided.

Answers to some questions about lift hydraulic cylinder:

The two cylinders of the bending machine are out of sync?
Check whether the sliding slide is worn, adjust its tightness, so that both sides are consistent, check whether the two cylinder tubing is connected, tighten the flow valve, pressure, let the cylinder air discharge.

Why does excavator cylinder oil leak?
Under normal circumstances, the leakage of hydraulic cylinders is divided into internal leakage and external leakage. The external leakage is generally due to damage to the oil seal at the extended end of the piston rod and needs to be replaced. Internal leakage is generally because the oil seal on the piston is damaged, you can try to replace the oil seal here, if the replacement will also leak, then check whether there is damage to the inner wall of the cylinder.