This article mainly introduces:

Czech Republic hydraulic cylinder,400 tons hydrauli ccylinder manufacturer,400 tons hydrauli ccylinder

(Czech Republic 400 tons hydrauli ccylinder,produced by Hebei Hengyu company）

400 tons hydrauli ccylinder are widely used in Czech Republic，because of simple structure and reliable operation，excellent temperature resistance，no transmission clearance.So our company has designed 400 tons hydrauli ccylinder for customers from Czech Republic.

Introduction to 400 tons hydrauli ccylinder:

When the 400 tons hydrauli ccylinder thrust is insufficient, check the hydraulic circuit for leaks. Including leakage of valves and hydraulic lines. The inspection method is to check and eliminate the leakage of the hydraulic connection line by manipulating the reversing valve. Also consider the relief valve. If the relief valve enters the dirt and jams the spool, so that the relief valve is normally open, the hydraulic oil will flow directly back to the tank through the relief valve bypass, resulting in no oil in the 400 tons hydrauli ccylinder. If the load is too large, although the regulating pressure of the relief valve has reached the maximum rating, the 400 tons hydrauli ccylinder still cannot get the thrust required for continuous action without action. If the regulating pressure is low, the pressure is insufficient to achieve the required vertebra force, which is manifested as insufficient thrust. Check and adjust the relief valve at this time.

When the 400 tons hydrauli ccylinder is installed, it is necessary to ensure that the direction of the connecting head at the top of the piston rod should be consistent with the direction of the 400 tons hydrauli ccylinder head, earring (or middle hinge shaft), and ensure the straightness of the whole piston rod during the advance and return process to prevent rigid interference and cause unnecessary damage.

Disassembly 400 tons hydrauli ccylinder: When disassembly 400 tons hydrauli ccylinder, strictly prevent damage to the screw thread at the top of the piston rod, the screw thread of the 400 tons hydrauli ccylinder head and the surface of the piston rod. It should also be noted that the piston cannot be played out from the 400 tons hydrauli ccylinder.

If the 400 tons hydrauli ccylinder is sliding or crawling (stop and go), check whether there is any astringency inside the 400 tons hydrauli ccylinder. The internal parts of the 400 tons hydrauli ccylinder 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 400 tons hydrauli ccylinder 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 400 tons hydrauli ccylinder 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 400 tons hydrauli ccylinder bore processing is out of whack. Because the piston and 400 tons hydrauli ccylinder, guide rail and piston rod are relative If the 400 tons hydrauli ccylinder 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 400 tons hydrauli ccylinder weight composition and calculation. The weight of the 400 tons hydrauli ccylinder is composed of the 400 tons hydrauli ccylinder diameter, the outer diameter and weight of the 400 tons hydrauli ccylinder, 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 400 tons hydrauli ccylinder:

Two cylinders in parallel, how to solve the synchronization problem?
The following methods can be used to achieve parallel cylinder synchronization: 1, rigid mechanical synchronization. 2. The throttle valve or speed regulating valve is used in the circuit to adjust the synchronization. 3, the two cylinders use independent quantitative pump oil supply to achieve synchronization. 4. Synchronous motor is used in the loop to realize cylinder synchronization. 5, using the position sensor to measure the stroke position and control the cylinder synchronization through the electrical system.

How to judge the failure of forklift hydraulic cylinder?
The common faults of the hydraulic cylinder of forklift truck are mainly crawling, insufficient thrust, working speed decline or even stop. Generally, crawling occurs at low speed. The main reason is that the air stored in the cylinder is not cleared. In addition, excessive or uneven mechanical friction can also cause crawling. Such as the piston and the piston rod different heart, the piston rod full length or local bending, the cylinder hole straightness is poor, the cylinder is drum shaped or has a large taper, the cylinder thin finish decline or produce hair, the cylinder installation accuracy is out of whack, the piston rod nuts at both ends of the screw too tight to make its concentricity is poor, the oil seal screw too tight friction is too large, will cause crawling.