The role of hydraulic cylinders as a type of hydraulic parts should not be underestimated. In the hydraulic system, the hydraulic cylinder as an important executive element, such as our human “muscle”. In order to correctly design and use of hydraulic cylinders, should master its characteristics and related applications and considerations
First， Classification and working principle
Hydraulic cylinder usually consists of the rear cover, cylinder, piston rod, piston assembly, front cover and other major components; in order to prevent oil leakage to the outside of the hydraulic cylinder or leakage from the high-pressure chamber to the low-pressure chamber, in the cylinder cylinder and the end cover, piston and piston rod, piston and cylinder, piston rod and the front end of the cover are set up between sealing devices, in the front cover on the outside, but also fitted with dust-proofing devices; in order to prevent the piston from returning to the end of the stroke quickly when it hit the cover, the end of the hydraulic cylinder is also set up a buffer device. In order to prevent the piston from hitting the cylinder head when it returns to the end of the stroke quickly, the end of the hydraulic cylinder is also equipped with a cushioning device; sometimes it is also necessary to install an exhaust device.
Hydraulic cylinder structure in a variety of forms, and its classification method has a variety of: according to the movement can be divided into linear reciprocating motion and rotary swing type; according to the role of the liquid pressure can be divided into single-acting, double-acting type; according to the structural form can be divided into piston, piston, multi-stage retractable sleeve, rack and pinion, etc.; according to the form of mounting can be divided into the tie rods, lugs, legs, hinged shafts, and so on.
During the working process, the hydraulic cylinder converts hydraulic energy into mechanical energy. Compared with hydraulic motors, hydraulic motors realize continuous rotary motion, while hydraulic cylinders realize reciprocating motion. In addition to being used individually, hydraulic cylinders can be used in two or more combinations or in combination with other mechanisms. The synchronized operation of multiple hydraulic cylinders is an important part of ensuring the efficient and safe operation of the equipment, which can effectively improve the working efficiency.
Second, the main parameters
The main parameters of the hydraulic cylinder, including pressure, flow, size specifications, piston stroke, movement speed, push and pull, efficiency and hydraulic cylinder power.
Pressure: pressure is the oil acting on the unit area of pressure, that is, the load acting on the piston divided by the effective working area of the piston. In the effective working area of the same piston, the greater the load, the greater the pressure needed to overcome the load. Hydraulic cylinder in accordance with the use of pressure can be divided into low-pressure hydraulic cylinder, medium pressure hydraulic cylinder, high-pressure hydraulic cylinder.
Flow: flow is the volume of oil through the effective cross-sectional area of the cylinder barrel per unit of time.
Piston stroke: piston stroke refers to the piston reciprocating movement in the distance traveled between the two poles. Generally in the cylinder to meet the stability requirements, according to the actual working stroke selected from its similar standard stroke.
Piston movement speed: movement speed is the unit time pressure fluid to push the piston to move the distance.
Size specifications: size specifications mainly include the cylinder barrel diameter, piston diameter, piston rod diameter and cylinder head size, etc., these dimensions according to the use of hydraulic cylinders, installation form, the need to provide the thrust and pull as well as the stroke and so on to calculate, design and calibration.
Third, installation precautions
1, pre-installation inspection before installing the hydraulic cylinder, you need to carefully check the appearance of the hydraulic cylinder for damage, seals are intact. If there is damage, it should be replaced in time. At the same time, you need to check whether the model and specification of the hydraulic cylinder are consistent with the design requirements to ensure the correctness of the installation.
2, the installation environment requirements of the hydraulic cylinder should be installed in a clean, dry environment, to avoid the installation of corrosive gases, dust and other harsh environments. Installation location should be easy to maintain and overhaul, to ensure that the hydraulic cylinder failure can be dealt with in a timely manner.
3, the installation of precision requirements for the installation of hydraulic cylinders, to ensure the precision of its connection with mechanical components. Especially the flange type fixed, need to ensure that the flange alignment accuracy, to avoid improper installation of hydraulic cylinders caused by uneven force, affecting its service life. For the earring type fixed, pay attention to the installation angle of the earrings to ensure that the hydraulic cylinder can swing in the correct range.
4, hydraulic piping connection when connecting hydraulic piping, to ensure that the piping is clean, to avoid impurities into the hydraulic cylinder, damage to the seals. The connection of the pipeline should be firm and reliable, to avoid leakage in the working process.
5, debugging and test run after the installation is completed, before officially put into use, you need to debug the hydraulic cylinder and test run. Check whether the action of the hydraulic cylinder is normal, there is no abnormal noise and vibration. During the debugging process, gradually increase the load and observe the performance of the hydraulic cylinder to ensure that it can meet the work requirements.
If you want to know more professional knowledge about hydraulic parts, you can browse the official website of Hanjiu Company, which produces hydraulic pumps and spare parts. The products are sold all over the world and have gained good reputation and feedback. At present, we have agents in more than ten countries and regions around the world.
hydraulic parts catalog
hydraulic parts list
hydraulic parts supply near me
hydraulics parts near me
hydraulic parts store near me
parts for hydraulic cylinder
hydraulic parts warehouse
john deere hydraulic parts catalog