What Causes Abnormal Vibration in the Hydraulic Hose of the Rotary Drive Head Motor?

[Braylen]

The abnormal vibration in the hydraulic hose of the rotary drive head motor can be attributed to the following reasons: Low Pressure Displayed by the Main Pump: The relief valve on the power oil seat may be stuck or damaged, leading to excessively low relief pressure. This condition is often characterized by normal operation under no load but weak or non-functional rotation under load. It is usually caused by the owner's neglect of regular machine maintenance, such as failing to replace or filter the hydraulic oil over time, resulting in valve spool sticking. Cleaning the relief valve spool, readjusting the relief pressure, or replacing the relief valve can resolve this issue. Low Relief Pressure of the Main Valve Safety Valve: The main valve typically has a main safety valve and independent relief valves for each valve plate. Pressure release from the main safety valve or the relief valves controlling the rotary drive head valve plates can cause weak rotation of the drive head. If the main safety valve is relieving pressure, not only will the drive head rotation be weak, but functions like travel, main hoist, auxiliary hoist, and slewing will also exhibit weakness. Readjusting the relief pressure of the main safety valve or the rotary drive head valve plate relief valves can eliminate this fault.