The harm caused by empty hitting to the excavator hammer breakers is not standardized. When the breaker of the excavator is hit in the air, the piston transmits the impact force to the steel drill, and the steel drill transfers the impact force to the steel drill pin. It is easy to break when impacted. 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 drill, etc., and leak oil from hoses and hard pipes.
Air strike state: crush the ore after crushing, and the strike angle is 85 degrees - 95 degrees.
When using an excavator hammer breakers, the phenomenon of empty hammering of the breaker often occurs, which causes great damage to the parts of the excavator breaker. So how do you know how to avoid empty hammering?
Air strike is actually when the excavator breaker is working, and the piston does not hit the drill rod when it moves. There are also two types of air strikes, complete air strikes and incomplete air strikes.
Completely empty hitting means that the piston has no contact with the drill rod at all, which is completely useless. At this time, the excavator breaker has no energy output, and is converted into heat energy.
It is not completely empty, that is, the piston has actually hit the drill rod, but because the excavator did not fix the excavator hammer breakers, the excavator breaker was lifted, and the drill rod was reversed, advancing with the piston, and returning to the piston Where it starts to move until it hits the flat pin. At this time, the drill rod, piston, flat pin, front cylinder block, and bolt rod were all affected by the component force of the impact and were seriously damaged. At this time, the drill rod starts to return. If the piston starts a new round of movement on the way back, the drill rod will be hit by the impact of the piston, which will cause more damage to the next flat pin. And when the drill rod hits the piston, it will speed up the impact frequency of the piston, which will aggravate more damage.
When purchasing an excavator hammer breakers, the user manual will have the item strictly prohibited empty hitting, but it is unrealistic to completely avoid empty hitting. The general excavator breaker will have the ability to withstand empty hitting, but it will take a long time. Still not working, machine friends must pay more attention when operating in normal times.