The core principle of the operation of the newly installed hydraulic rotary actuator is "stability" rather than "speed". Mastering the three core skills of "low-speed running-in to discharge air, full-process self-inspection to troubleshoot hidden dangers, and gradual loading for standard operation" will take a small amount of time, but it can effectively avoid faults such as abnormal noise, crawling and oil leakage, reduce maintenance costs and construction period losses, extend the service life of the hydraulic rotary actuator, and ensure the smooth progress of the project.

As the core transmission component of hydraulic equipment, the operation standard of the newly installed hydraulic rotary actuator directly affects the operational stability of the equipment, the service life of the hydraulic rotary actuator, and is also related to the project construction period and cost control. In practice, most of the faults such as abnormal noise, crawling and oil leakage that occur in the hydraulic rotary actuator in the later period are caused by the irregular operation of direct full-load operation after new installation. Mastering the core skills for the operation of the newly installed hydraulic rotary actuator and avoiding operational mistakes are indispensable links in engineering construction.

I. Core Mistake: Full-load Operation Immediately After New Installation, with Hidden Dangers

When the construction period on the engineering site is tight, some construction personnel, in order to save time, directly put the hydraulic rotary actuator into full-load operation after the new installation and commissioning, ignoring the key link of new machine running-in, which is very likely to cause a series of faults. Frequent maintenance and shutdown for replacement of accessories in the later period not only wastes material costs but also seriously delays the construction period, resulting in a situation of "saving time but losing more".

1. The initial wear of internal parts of the hydraulic rotary actuator is intensified, and the seals are aged and damaged, leading to oil leakage;

2. The residual air in the hydraulic system cannot be discharged, causing crawling, jitter and abnormal noise of the hydraulic rotary actuator;

3. Long-term over-load operation will damage the cylinder structure and shorten the service life of the hydraulic rotary actuator.

Such faults are not inevitable. Mastering the core skills for operation after new installation and doing a good job in pre-running-in and self-inspection can avoid risks from the source.

II. Low-speed Running-in and Air Discharge

For the first start-up after the new installation of the hydraulic rotary actuator, the principle of "low-speed running-in and gradual loading" must be followed, and it is strictly prohibited to directly start the high-speed and full-pressure mode. The core operations are as follows:

1. Adjust the equipment to low-speed operation, let the hydraulic rotary actuator stretch and retract slowly and cycle back and forth, it is recommended to cycle 3-5 times to ensure that the residual air in the hydraulic system and the cylinder chamber of the hydraulic rotary actuator is completely discharged;

2. The core purpose of low-speed running-in is to fully adapt the internal parts and seals of the hydraulic rotary actuator, and discharge the residual air at the same time - air is the main cause of crawling, jitter and abnormal noise of the hydraulic rotary actuator, and unexhausted air will seriously affect the operational stability of the hydraulic rotary actuator.

III. Full-process Self-inspection to Troubleshoot Hidden Dangers

During the low-speed running-in and air discharge, full-process self-inspection must be carried out to timely troubleshoot potential hidden dangers. The specific inspection contents include:

1. Abnormal noise inspection: Observe whether there is abnormal noise during the operation of the hydraulic rotary actuator. If there is abnormal noise, stop the machine immediately for inspection to avoid intensified wear of internal parts;

2. Action inspection: Confirm that the stretching and retracting action of the hydraulic rotary actuator is stable, without jamming or crawling, to ensure smooth action;

3. Leakage inspection: Focus on checking the key positions such as the joints and seals of the hydraulic rotary actuator, and check for signs of oil seepage and leakage. Even slight leakage must be handled in a timely manner to avoid the expansion of faults.

IV. Gradual Loading and Standard Operation

After confirming that the hydraulic rotary actuator runs smoothly at low speed, without abnormal noise, crawling or leakage, and the air in the hydraulic system has been completely discharged, then gradually increase the operation speed and work pressure, and gradually transition to the normal working condition and full-load operation state. It is strictly prohibited to fully pressurize and run at high speed at one time.

Gradual loading can effectively reduce the initial abnormal wear of the internal parts of the hydraulic rotary actuator, protect the seals and cylinder structure, and avoid irreversible damage caused by excessive instantaneous load.