Proper application of hydraulic hammer
This paper takes the common specifications and models as an example to show the proper application of hydraulic hammer.
1) Carefully read the operation guide of hydraulic hammer to avoid damaging hammer and excavator, and operate them reasonably.
2) During the operation, check whether the anchor bolt and coupling head are loose, and whether the hydraulic oil pipeline has leakage.
3) Do not peck holes in hard rock with hydraulic hammer.
4) It is not allowed to operate the excavator breaking hammer when the hydraulic cylinder of the hydraulic cylinder is fully extended or fully retracted.
5) When the hydraulic hose vibrates violently, the actual operation of the excavator breaking hammer should be terminated and the working pressure of the accumulator should be checked.
6) Avoid diffraction between boom of excavator and twist drill of breaking hammer of excavator.
7) Except for twist drill, it is not necessary to penetrate the breaking hammer of excavator into water.
8) Do not use the breaking hammer of excavator as hoisting equipment.
9) It is not allowed to operate the excavator breaking hammer on the chain rail side of the excavator.
10) When the hydraulic hammer is installed and connected with crawler excavator or other construction machinery and equipment, the pressure and total flow of the hydraulic transmission system of the server must meet the performance parameter requirements of the hydraulic hammer. The "P" port of the hammer is connected with the high pressure fuel pipe of the server, and the "a" port is connected with the fuel return pipe of the server.
11) When the hammer is working, the gear oil temperature is 50-60 degrees, which can not exceed 80 degrees. Otherwise, the load of hydraulic hammer should be relieved.
12) The working substance of the hydraulic hammer application is generally consistent with the cooking oil used in the hydraulic transmission system of the server. Yb-n46 or yb-n6846 hydraulic oil is strongly recommended in general areas, and yc-n46 or yc-n68 ultra-low temperature gear oil is applied in severe cold regions. The filtering precision of gear oil shall not be less than 50micro; mo
13) When the new and repaired hydraulic hammers are opened, they must be filled with nitrogen again, and the working pressure is 2.5 and ± 0.5cpa.
14) High temperature resistant grease or composite calcium base grease must be used between the shank of drill rod and the guide sleeve of engine block, and it shall be filled once per shift.
15) When the hydraulic hammer is working, it is necessary to press the drill rod on the rock layer and maintain a certain pressure before starting the excavator crushing hammer. It is not allowed to start the hammer when it is suspended in the air.
16) Hydraulic hammer is not allowed to be used as a crowbar to prevent fracture of the drill rod.
17) When applied, the hydraulic hammer and the towbar should be vertically and evenly divided into the driving face, with no axial force as the standard.
18) When the crushed target has cracked or just started to cause cracks, the impact of the excavator breaking hammer should be stopped immediately to prevent the occurrence of harmful "empty hitting".
19) If the hydraulic hammer is to be stopped for a long time, N2 should be drained, and the oil inlet and outlet should be sealed. The cut iron should be stored in the natural environment with high temperature and below - 20 ℃.
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