The crushing hammer is not durable and the use of the grinding period is key. After the hydraulic crushing 

hammeris out of the factory, the general provisions are about 60 hours or so. This is the technical

 characteristics of the manufacturing plant based on the initial technical characteristics of the hydraulic 

crushing hammer. The grindingphase is to ensure the normal operation of hydraulic crushing hammer, 

reduce the failure rate and prolong the service life. However, at present, some users are ignoring the 

special technical requirements of the new machine for the lack of hydraulic crushing hammer using 

common sense or due to tight deadlines or to get the benefit as soon as possible. Some users even 

think, anyway, manufacturers have the repair period, the machine is broken by the manufacturer is 

responsible for the maintenance, so the machine overload for a long time to be put into use in the 

running-in period, cause the machine early failure occurs frequently, which not only affect the normal 

use of the machine, shorten the service life of the machine, but also because the machine is damaged, 

affect the construction schedule. Therefore, the use and maintenance of the hydraulic crushing 

hammer should be taken seriously.

1. The characteristics of the mill period


1. Wear speed
Due to the influence of the new machine parts processing, assembling and adjustment, the friction surface is

 rough, the surface contact area is small, the surface pressure is uneven. Machine in the process of running, 

concave and convex part chimeric friction each other on the surface of the parts, grinding of metal debris fell 

down, and as an abrasive, continue to participate in friction, accelerate the abrasion on the surface of the 

parts with more. Therefore, it is easy to cause wear and tear on parts (especially surface) during the grinding

 period. At this time, if overload operation, may result in the damage of parts, resulting in early failure.

2. Bad lubrication
As a result of the new assembly parts fit clearance is small, and due to reasons such as assembly, it is difficult 

to guarantee the uniformity of fit clearance, lubricating oil (grease) in less friction surface uniform oil film

 formation, to prevent wear and tear. Thus, the lubrication efficiency can be reduced, causing the early

 abnormal wear of the machine parts. It can cause the friction surface to scratch or bite, causing the failure

 to occur.
3. dense
New processing and assembling of the parts, geometry shape and dimension deviation, exist at the

 beginning of the use, due to alternating load such as shock, vibration, and the influence of factors

 such as heat, deformation, and the wear too fast, easy to make the original loose fastening parts produced.
4. Leakage phenomenon
Due to the loose vibration of the machine, the influence of the vibration and the heat of the machine, 

the sealing surface of the machine and the joints of the pipe will leak. Some defects such as casting and 

processing are difficult to find when assembling and debugging, but due to the vibration and impact of 

the operation process, this defect is exposed and is manifested as leakage (oozing) oil. Therefore, it is 

easy to leak during the grinding period.

5. Error in operation
Due to the lack of understanding of the structure and performance of the machine (especially the 

new operator), it is easy to fail due to operational mistakes and even cause mechanical accidents.

Ii. Use and maintenance of the grinding period


1. Since the hydraulic crushing hammer is a special equipment, operators should obtain certain 

operation and maintenance experience to operate the machine. With the: "peration &maintenance

 manual of manufacturers to provide products, are the essential data of operating equipment, operator

 before operating the machine, be sure to read the instruction in operation and maintenance, according 

to the specification requirements for operation and maintenance.

2. Pay attention to the work load period, the running-in period of working load generally not more 

than 80% of the rated load, and to arrange suitable work, prevent the machine from overheating

 caused by long time continuous operation.

3. Pay attention to constantly observe the broken hammer working condition, abnormal, should

 stop to stop in time to eliminate, for the reason not found, before the failure to rule out, should 

stop the operation.

4. Check the quality of lubricating oil, hydraulic oil and coolant, and check the sealing of the whole

 machine. The oil was found to be lacking in oil, and the reason should be analyzed. At the same 

time, the lubrication of each lubrication point should be strengthened, and the lubricating grease

 (except special requirements) should be added to the lubrication point during the grinding period.

5. Keep the machine clean, adjust and tighten loose parts in time to prevent wear or loss of parts 

due to loosening.

6. At the end of the grinding period, the machine should be kept in a mandatory maintenance, 

checkand adjust the work, and pay attention to the change of oil fluid.

All in all, the requirements for the use of hydraulic crushing hammer during the grinding period can

 be summarized as: strengthening training, reducing load, paying attention to check and strengthening

 lubrication. As long as pay attention to and implemented according to the requirement of hydraulic 

hammer period of maintenance and maintenance, can reduce the occurrence of early failure, prolong 

service life, improve the working efficiency, make the machine to bring you more benefits.

3. Maintenance after the grinding period


1. Use regular ration of butter to prevent excessive wear and tear of vulnerable parts and prolong their

 life. Add butter to the correct position: the drill is vertically inserted into the ground and pressed to the 

bottom, otherwise the butter enters the strike chamber and is carried into the cylinder with the hydraulic

 oil mixture, resulting in "black oil". Add the butter to the guide sleeve and liner, and try not to attach

 the butter to the piston.
2. The broken hammer should be kept out of the air when working, which will cause the body, housing 

and large forearm to hit, causing its failure; To prevent slanting, it should be perpendicular to the hit, 

otherwise the piston will not move in a straight line in the cylinder, leading to the stroke of the piston 

and cylinder.


4. Precautions for the use of broken hammer


1. Do not hit continuously, the shank and the piston are easy to grind, the hydraulic oil temperature

is too high. Each strike is best controlled in 30 seconds, the longest not exceeding 1 minute, a rock

 that cannot be broken, to change the position of the strike;
2. It is not easy to break the beaten object, and to crack the crushing and dissection from the edge.
3. Before operating in water, it must be equipped with air pressure piping to check whether the 

hydraulic oil is cloudy;
4. Do not touch the drill bit after the broken work, avoid scalding;
5. The guide sleeve should keep a certain distance from the hit object to avoid dust entering the

 broken hammer;
6. Prevent the operation of the oil cylinder of the big arm of the excavator to avoid the failure of 

the oil cylinder;
7. Check the float of the brazing rod, and check the rod and its clearance when too large;
8. In the crushing operation, always check the vibration of the hose. If the hose jitter, stop the 

operation immediately and check the high and low nitrogen pressure.


5. Storage of broken hammer


1. When the broken hammer is taken from the excavator for storage, to prevent the water 

from entering, it is necessary to keep the back of the cylinder block high, preferably in a room 

with low humidity. A broken hammer, which is not used for a long time, can cause the piston 

to rust, leak oil and so on. When disassembled, the hydraulic system is closed with the plug 

to prevent the foreign body from entering the hydraulic system.
2. Keep the nitrogen in storage for a long time. At the same time, pay attention to the rust 

of the piston, release the cylinder nitrogen, push the piston to the bottom with the top lever, 

and finally apply anti-rust oil.
3. After removing the brazing rod, check the wear condition of the vulnerable parts in the 

cylinder, and check the piston, brazing surface, bit, and thrust ring seal cone.