Six failure causes of hydraulic rock breaker hammer and solutions two

3. Failure phenomenon: Insufficient impact frequency of hydraulic rock breaker hammer

main reason:

The pressure or flow of the hydraulic system of the hydraulic rock breaker hammer is insufficient, the drill rod of the hydraulic breaker is loose, the hydraulic seal of the hydraulic breaker is worn, the hydraulic grease of the hydraulic breaker is contaminated, and the safety valve of the hydraulic breaker fails.

solution:

1) First check the oil pump of the hydraulic rock breaker hammer, and adjust the oil pressure and flow that is too high or too low to realize the control of the hammer;

2) Check the hydraulic breaker oil circuit to avoid blockage of the pipeline and affect the impact frequency of the hydraulic breaker;

3) Replace the worn out seals and valves to ensure the stability of the hydraulic system of the hydraulic breaker

4) Tighten the drill rod of the hydraulic breaker, increase the pressure on the drill rod, and do a good job of fixing the drill rod.

4. Failure phenomenon: abnormal vibration of hydraulic rock breaker hammer tubing

main reason:

The accumulator of the main body of the hydraulic rock breaker hammer impactor is faulty and the leaking diaphragm is damaged; the nitrogen pressure of the handle body of the hydraulic breaker is reduced.

solution:

Check the gas pressure of the accumulator of the hydraulic rock breaker hammer. If the specified pressure cannot be maintained, check whether the diaphragm is damaged. In addition, the nitrogen pressure of the hydraulic breaker must be adjusted to make it balanced.

5. Failure phenomenon: oil leakage of hydraulic breaker

main reason:

Oil leaks at the pipe joints of the hydraulic rock breaker hammer; oil leaks from the cylinder body of the hydraulic breaker.

solution:

The oil leakage of the hydraulic breaker can be carried out by replacing the sealing ring of the hydraulic breaker and tightening the oil circuit joints. The leakage of the oil at the cylinder body of the hydraulic breaker can be dealt with by replacing the sealing ring.

6. Failure phenomenon: the piston ring of the hydraulic breaker is damaged

main reason:

1) Impurities in the hydraulic oil cause scratches on the surface of the piston ring;

2) The structural strength of the piston ring of the hydraulic rock breaker hammer is insufficient, and it will be damaged under long-term abrasion and high temperature;

3) The hydraulic breaker piston ring gap is too large, causing the guide drill rod to knock and vibrate, resulting in damage to the hydraulic breaker piston ring;

4) The hydraulic rock breaker hammer piston lubrication system is faulty, the piston ring is not fully lubricated, it is difficult to form a protective oil film, dry friction is formed, and the hydraulic breaker piston ring is broken;

5) The technical performance of the piston ring of the hydraulic breaker is not strong, the surface carburizing treatment, the quality of the alloy steel is not high, cracks, gaps, and cracks and damage occur.

solution:

In the prevention of damage to the piston ring of a hydraulic rock breaker hammer, it is necessary to find the hitting part of the piston and the hitting part of the drill rod, and select the appropriate hardness in a targeted manner to keep the difference between the two. The piston ring of the hydraulic breaker should be lubricated to avoid dry friction. It is necessary to adjust the temperature control range of the hydraulic breaker piston ring to avoid damage to the hydraulic breaker piston ring caused by excessive temperature.