The reason of excavator breaker hammer stops hitting during the working process

The reason why the excavator breaker hammer stops hitting during the working process:

1. Reversing valve card. After the excavator breaker hammer was disassembled and inspected, it was found that other parts were in good condition. After checking the reversing valve, it was found that its sliding and astringent were more likely to be issued. After removing the reversing valve spool, it was found that there were many strains on the valve body. (replace the reversing valve spool)

2. Improper replacement of the bushing. After replacing the bushing, the excavator breaker hammer fails to stop working. It does not strike when it is pressed down, and it strikes when it is lifted a little. After the replacement of the bushing, the position of the piston is further moved up, causing some small reversing valve control oil circuits in the cylinder to be closed at the starting position, and the reversing valve stops working, causing the breaker to stop working. (replace the original or regular bushing)

3, the rear cover into the oil. (Upper cylinder block) The excavator breaker hammer gradually becomes weak during the striking process, and finally stops striking. If you need a quality breaker, you can contact Xiaobian Zhizao Daguan; you are measuring nitrogen pressure. If the pressure is too high, after release, it can strike, and soon stops striking, and the pressure becomes high again after measurement. After the disintegration, it was found that the upper cylinder was full of hydraulic oil, and the piston could not be compressed backward, resulting in the failure of the breaker to work. (replace seal assembly)

4. The accumulator component in the pipeline falls into the pipeline. During the inspection, it was found that the deformed parts in the reversing valve blocked the reversing valve.

In addition to the above reasons, the valve plate of the excavator is stuck, or the O-ring on the valve plate comes out of the groove, which also causes the breaker to not strike.

The strike frequency of the excavator breaker hammer cannot be adjusted:

Check the frequency regulator of the breaker. After removing the frequency regulator, check the O-rings and find that they are deformed and damaged, resulting in the inability to change the frequency.

Approach:

Replace the regulator O-ring.

Disadvantages of empty blowing with excavator breaker:

Irregular operation, when the excavator breaker hammer is in the air, the piston transmits the impact force to the steel drill, the steel drill transfers the impact force to the steel drill pin, and the steel drill pin is easily broken when it is subjected to a strong impact force. When the steel brazing pin is impacted, the impact force will be distributed to the steel brazing pin cross-pin before and after, and the steel brazing cross-pin will top the inner hole of the steel brazing pin, which will cause the block at the edge of the inner hole to crack. , which eventually led to the rupture of the lower cylinder. Frequent air strikes will break the front body, flat pins, bolts, etc., crack the guard plate, boom, steel brazing, etc., and leak oil from hoses and hard pipes.

The correct way to deal with the empty hit of the excavator breaker hammer:

The crushing operation is carried out after pressing the hit ore, and the hitting angle is 85 degrees - 95 degrees.