Release time：2023-11-08 10:37:10 Hits： Current position: Home > News
This article mainly introduces:
Uganda hydraulic cylinder,trailer hydraulic cylinder manufacturer,trailer hydraulic cylinder
(Uganda trailer hydraulic cylinder,produced by Hengyu Hydraulic Co., Ltd）
trailer hydraulic cylinder are widely used in Uganda，because of no need for deceleration device，long service life，smooth movement.So our company has designed trailer hydraulic cylinder for customers from Uganda.
trailer hydraulic cylinder is the most important part of construction machinery, the traditional processing method is: broaching trailer hydraulic cylinder block - fine boring trailer hydraulic cylinder block - grinding trailer hydraulic cylinder block. The rolling method is: broaching trailer hydraulic cylinder block - fine boring trailer hydraulic cylinder block - rolling trailer hydraulic cylinder block, the process is 3 parts, but the time is compared: grinding 1 meter of the trailer hydraulic cylinder block is about 1-2 days, rolling 1 meter of the trailer hydraulic cylinder block is about 10-30 minutes. Input comparison: grinding machine or quilting machine (tens of thousands - millions), rolling knife (ten thousand - tens of thousands). After rolling, the surface roughness of the hole decreases from RA3.2-6.3 μm before rolling to Ra0.4 ~ 0.8μm, the surface hardness of the hole increases by about 30%, and the fatigue strength of the inner surface of the trailer hydraulic cylinder increases by 25%. If the trailer hydraulic cylinder life is only considered, it is increased by 2 to 3 times, and the boring and rolling process is 3 times more efficient than the grinding process In particular, if you want to make high-quality trailer hydraulic cylinders, you must take the rolling production process. After the trailer hydraulic cylinder is rolled, there is no sharp tiny edge on the surface, and long-term motion friction will not damage the seal ring or seal, which is particularly important in the hydraulic industry.
If the trailer hydraulic cylinder is sliding or crawling (stop and go), check whether there is any astringency inside the trailer hydraulic cylinder. The internal parts of the trailer 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 trailer 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 trailer 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 trailer hydraulic cylinder bore processing is out of whack. Because the piston and trailer hydraulic cylinder, guide rail and piston rod are relative If the trailer 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 trailer hydraulic cylinder weight composition and calculation. The weight of the trailer hydraulic cylinder is composed of the trailer hydraulic cylinder diameter, the outer diameter and weight of the trailer 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.
Causes and countermeasures of oil trailer hydraulic cylinder leakage: Cast iron ring seal allows a certain degree of internal leakage. The impurities in the trailer hydraulic cylinder will lead to premature wear of the piston seal, replace the piston seal; If the trailer hydraulic cylinder is visibly scarred, the trailer hydraulic cylinder must be replaced. It can be pressurized at one end of the trailer hydraulic cylinder and opened at the other end of the oil port to observe whether there is obvious internal leakage at the end of the oil port. Most trailer hydraulic cylinder piston drift may not come from the trailer hydraulic cylinder, the above method to determine the trailer hydraulic cylinder without internal leakage is helpful to determine the problem of the hydraulic system related components.
The wear of the hard chromium plating layer of the trailer hydraulic cylinder is mostly caused by the grinding of the friction iron powder of the piston, and the wear is faster when there is water in the middle. Corrosion caused by the contact potential difference of the metal only occurs in the part of the piston contact, and the corrosion occurs in a point pattern. As mentioned above, when there is moisture in the middle, it will promote the development of corrosion. Compared with castings, the contact potential difference of copper alloy is higher, so the corrosion degree of copper alloy is more serious.
How to remove the air in hydraulic cylinder?
Connected the cylinder to the system, and reciprocating move with full stroke several times, then the air can be eliminated . There is also a clunky method as follows: first remove the rod cavity oil pipe, connect the rodless cavity oil circuit to extend all the cylinders, and then remove the rodless cavity oil pipe, connect the rod cavity oil pipe and withdraw all the cylinders, and then connect the rodless cavity oil pipe, so that there is no air in the cylinder.
What does the maximum output force of the cylinder piston mean?
The maximum output of the cylinder is related to the pressure of the hydraulic system that you link to the cylinder. For example, the rated maximum output thrust of the MOB 50 cylinder is 1.3 tons and the rated pressure is 7Mpa. That is, when the input hydraulic oil pressure of the cylinder reaches 7Mpa, the maximum output thrust of the cylinder is only 0.98 tons. When the input hydraulic pressure is only 5Mpa, the maximum output thrust of the cylinder is 1.3 tons. Because the pressure of the cylinder limit is only 7Mpa, if the oil pressure of the input system exceeds 7Mpa, the cylinder can not withstand the pressure burst, and it is damaged.
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