Hammer blow weakness?
The reasons causing
Hammer have no energy, for many reasons, such as the nitrogen pressure is not enough, pipeline oil pressure is not enough, and so on. Also with the local weather and hardness of the ore.

Processing method

1. Check the nitrogen pressure enough in the first place.
2. Check the static hydraulic enough.
3. Check whether driving oil can meet the demand of broken hammer.
4. The drill rod size whether standard, whether wallboard bolt is loose.
5. The liner clearance and wear conditions.
6. The amount of hydraulic oil is enough.
7. Stop valve is not fully open.
8. The overflow valve lock nut is loose.
If all the above normal:
(1) pilot pressure is insufficient or spare valve port A card, the diarrhea.
2 main feed or oil plug.
(3) piston or control valve inside have diarrhoea.
(4) power supply is not enough or large pump have diarrhoea.
If it is broken hammer hammer with accumulator also check the accumulator cup is broken.
Hammer the oil?
The reasons causing
Hammer the cause of the oil is also a lot of, this will divide the different parts.
Approach 1 piston leaks:
(1) to observe the daily maintenance of way, to check the disintegration of movement, there are a large number of hydraulic oil leakage and turbidity, lining and mixed with lots of butter between piston and hydraulic oil mixture. This is caused by poor filling of butter. Replace the seal components in a timely manner and explain to the customer the right way to make butter.
[2] found that the hydraulic oil leakage and broken hammer casing corrosion is serious. Because customers don't have to for a long time, save the wrong way, the water erosion caused by the piston seals strain direct damage rust, causing the oil spill, explain to customers, long-term preservation way: put the nitrogen, and push the piston into the cylinder body inside.
(3) to observe the qi operating mode, dug movement, there is a lot of make a lot of small gravel dust into the cylinder body inside, before the wear and tear of piston seals, and then produce the oil. Explain to the customer right way of operation, to avoid such case happen again.
2 the reversing valve base and leaks in the cylinder:
The base of the directional control valve to damage of \"o\" type circle.
3 the junction surface of the interface in the cylinder block and oil pipeline:
Causes: type O sealing ring wear loose or tubing interface. Replace o-rings, according to the specified torque.
4 cylinder and the cylinder body of the oil interface:
Sealing ring damage, broken hammer tower bolt looseness. Replace the sealing ring in a timely manner in accordance with the provisions, torque xuan tight.
5 control valve and control valve cover the joint of the oil:
Type O ring wear, control valve cap screws is loose. Replace o-rings, tighten the cover screws. In addition to the above reasons, the aging of the oil seal, hydraulic oil dirty, causing injury, liner clearance is too large, oblique, destruction of the oil film and so on also easy to cause leakage.
Hammer bolt fracture frequently?
The reasons causing
Because hammer working environment is bad, so its parts easy to wear, bolt fracture often to a certain extent, is also a normal phenomenon, in addition, working in the hammer would produce the strong vibration, which leads to wallboard bolt looseness and tower bolt, the bolt will often in thread fatigue damage eventually lead to fracture.
Specific reasons are as follows:
1. The shell deformation.
2. The welding place desoldering, cause deformation.
3. Itself quality problem, strength is not enough.
4. Single stress, stress is not uniform. (no regular check)
5. Caused by external force.
6. Too much pressure, vibration caused by too much.
7. Empty play, such as improper operation caused. Handling: every 20 hours, tighten the bolt. Standardize the operation, less as far as possible do dug.
What harm is there in empty play of broken hammer?
The reasons causing
Non-standard operation, the broken hammer, in the empty piston impact force transmission to drill, drill rod pin the impact on to drill rod and drill rod pin under strong impact, easy to fracture. Before and after the drill pin at the time of impact will spread the impact to the drill pin cross pin, then drill horizontal pin will top drill horizontal pin hole, which can lead to inner hole edge, cracking, before eventually led to the cylinder rupture.
Often empty playing can make before cylinder, flat pin, bolt fracture, such as shell, the big arm, broken, such as the hose and hard tube leakage.
handling
Will hit the ore crushing operations after compaction, attack Angle of 85 degrees - 95 degrees.
Explain to the customer in accordance with the hammer standard operating instructions on the way.
Hammer to stop fighting?
The reasons causing
Is the cause of not blow:
For example, in the process of broken hammer work stop blow:
Reversing valve card: in to check after the disintegration of broken hammer, find other in good condition, found in its sliding check reversing valve hair acerbity more prone to card, remove the reversing valve valve core, found that there have been several strain in the body. (change the reversing valve core)
2. : improper bushing change. Hammer after replace the bushing, occurs fault, stop working pressure is not blow, slightly after the strike action. Due to replace the bushing after more depend on the piston position, cause small directional control valve control cylinder body oil in the starting position has been closed, reversing valve to stop working cause broken hammer to stop working.
3. After cylinder feed: (cylinder) hammer is weak, and gradually in the process of blow last stop. In measuring the nitrogen pressure. Pressure is too high, after their release, can blow, soon stop, after measurement and high pressure. After the collapse of the discovered filled with hydraulic oil cylinder, piston cannot compress back, cause broken hammer will not work. (in the sealing components)
4) pipeline in the accumulator parts fall in line: in the process of inspection found the reversing valve in the deformation of parts stuck directional control valve.