As the core actuator in the hydraulic system, the installation quality of the hydraulic cylinder directly affects the operating stability and service life of the equipment. Improper installation may cause leakage, poor movement, seal damage, and even system failure of the hydraulic cylinder. Therefore, when installing the hydraulic cylinder, it is necessary to strictly follow the specifications to ensure the stability and safety of the equipment.
This article will introduce the installation precautions of the hydraulic cylinder in detail, including preparations before installation, installation steps, debugging points, and common troubleshooting.
1. Preparations before installing the hydraulic cylinder
Before officially installing the hydraulic cylinder, you need to make adequate preparations to ensure a smooth installation process.
Check the appearance and parts of the hydraulic cylinder
Ensure that the surface of the hydraulic cylinder is free of damage, cracks, or deformation.
Check whether the piston rod is scratched and whether the seal is intact.
Ensure that there are no abnormalities in the connection parts such as the mounting flange and the trunnion.
Clean the installation area and hydraulic cylinder
The inside and outside of the hydraulic cylinder must be clean to prevent impurities from entering the system.
Check the cleanliness of the hydraulic oil to avoid contaminants affecting the working performance of the hydraulic cylinder.
Confirm the installation position and connection method of the hydraulic cylinder
According to the equipment design drawings, determine the installation position and fixing method of the hydraulic cylinder.
Ensure that the mounting bracket of the hydraulic cylinder can withstand the load and pressure during its operation.
2. Correct installation steps of the hydraulic cylinder
2.1 Determine the installation direction and position of the hydraulic cylinder
The hydraulic cylinder should be aligned with the direction of movement and ensure the correct installation angle to reduce the impact of lateral loads on the hydraulic cylinder. If the hydraulic cylinder is not installed properly, it may cause uneven force on the piston rod and accelerate wear.
2.2 Install the hydraulic cylinder fixing bracket
Flange installation: Ensure that the flange surface is flat, and the mounting bolts are tightened and evenly stressed.
Trunion installation: Ensure that the trunnion bearing is well lubricated and adjusted to the appropriate position to avoid additional stress during installation.
2.3 Connect the hydraulic pipeline
The installation of the hydraulic pipeline is very important. When connecting, pay attention to the following:
The hydraulic oil pipe should avoid excessive bending to reduce flow resistance.
Use appropriate seals, such as O-rings or combination gaskets, to prevent oil leakage.
Ensure that the high-pressure pipeline is firmly fixed to avoid vibration affecting the working stability of the hydraulic cylinder.
2.4 Adjust the stroke and buffer device of the hydraulic cylinder
After installing the hydraulic cylinder, its stroke needs to be adjusted so that it can work normally within the specified range.
If the hydraulic cylinder is equipped with a buffer device, the buffer valve needs to be adjusted to ensure that the hydraulic cylinder runs smoothly during operation and reduces impact.
2.5 Check the coaxiality and balance of the hydraulic cylinder
The piston rod of the hydraulic cylinder must be consistent with the direction of load movement to prevent lateral force from damaging the cylinder and piston rod.
Ensure the accuracy of the support bearing or sliding guide rail to reduce unnecessary friction loss.
3. Key points for debugging after the installation of the hydraulic cylinder
3.1 Exhaust treatment
After installing the hydraulic cylinder, the hydraulic oil should be gradually introduced, and the piston should be pushed back and forth slowly to exhaust the air in the system to avoid cavitation.
3.2 Check the hydraulic system pressure
Adjust the pressure of the hydraulic system to the recommended value to avoid damage to the hydraulic cylinder or inability to work due to overpressure or low-pressure operation.
3.3 Check the sealing of the hydraulic cylinder
Observe whether there is leakage during low-pressure operation. If there is leakage, the pipe joint should be re-tightened or the seal should be replaced.
3.4 Test the load capacity of the hydraulic cylinder
Test the working condition of the hydraulic cylinder under no-load conditions, then gradually increase the load and observe its stability.
4. Common problems and solutions for hydraulic cylinder installation
4.1 Oil leakage in the hydraulic cylinder
Cause analysis:
The seal is aged or damaged.
The pipeline connection is not tight, loose, or damaged.
The piston rod surface is scratched, resulting in seal failure.
Solution:
Replace the seal and choose high-pressure and wear-resistant materials.
Re-tighten the pipeline joints to ensure that there are no leaks.
Grind or replace the damaged piston rod.
4.2 The hydraulic cylinder runs unsteadily or gets stuck
Cause analysis:
Hydraulic oil is contaminated, resulting in blockage inside the valve core or cylinder body.
The coaxiality of the hydraulic cylinder is not good, and the piston rod is affected by lateral force.
Solution:
Filter or replace the hydraulic oil to ensure that the oil cleanliness meets the standard.
Adjust the installation angle of the hydraulic cylinder to ensure smooth movement of the piston rod.
4.3 The hydraulic cylinder has insufficient or no thrust
Cause analysis:
Insufficient pressure in the hydraulic system.
Internal seals are damaged, resulting in internal leakage.
Solution:
Adjust the hydraulic pump pressure to ensure the normal operation of the system.
Disassemble the hydraulic cylinder to check the seals and replace them if necessary.
Correct installation of the hydraulic cylinder is a key link to ensure the stable operation of the hydraulic system. From preparation before installation, selection of fixed brackets, pipeline connection, and stroke adjustment to commissioning and testing, each step needs to be strictly carried out in accordance with the specifications to ensure the long-term stable operation of the hydraulic cylinder.
In actual operation, users need to pay special attention to the coaxiality of the hydraulic cylinder, the sealing of the pipeline connection, and the exhaust treatment during the commissioning process. If the installation is improper, it will not only affect the performance of the equipment but also cause premature damage to the hydraulic cylinder and increase the maintenance cost.
I hope this article can help you gain a deeper understanding of the installation precautions of the hydraulic cylinder. If you need to buy hydraulic cylinder products, please contact us, wand e will provide you with professional solutions!
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Ningbo Toring Machinery Manufacturing Co., Ltd.
