Basic knowledge of the rig

- Nov 13, 2019-

Crawler traction type drill in use can appear all sorts of problems, such as a hydraulic system failure pressure, pressure regulating valve to adjust the fatigue limit nut or replace the spring; If the pressure regulating valve seat cone damage or death, to remove the relief valve set of Jane maintenance; Fault 2 drill coupling fever, excessive wear elastic circle; Reason is the drilling rig engine and clutch assembly, alignment is poor, need to improve assembly alignment; Failure after three drill pump start-up oil or no oil, first to catalogue for retrieval in the amount of oil in the tank is insufficient or no oil, gas to oil level line fault such as still not ruled out, to screen filter blockage, in addition, it remains to be seen whether the traction type drill fuel tank vent plug, or suction hose connector loose reasons such as inlet; Four drill hoist brake fault slip, the main reason is that the brake belt surface oil pollution, need to clean the surface in the brake; If there is no oil in the rig brake, should check the brake and brake wheel clearance, such as too loose to appropriate tighten. Fault five drill clutch skid, the main reason is that the friction piece of excessive wear or broken or compression spring aging or fracture, should repair rig friction plate; Six drill pump heat and wear fault, must repair and replace the oil pump, oil viscosity too high or too low, we will strictly according to the specification oil.

Engineering RIGS need to be considered when using the engineering geological conditions, some of the main performance engineering drilling equipment and engineering geological analysis, the larger part of crawler tractor type construction to drill through the quaternary soil, pebble bed, such as complex formation, the pile hole forming, percussive reverse circulation aperture in clay, clay, muddy soil, silty sand layer construction to prevent slumping hole, still use normal circulation percussion drilling, but easy to reducing, but pile verticality is better. According to our company has the construction of several engineering data show that in rotary drill into the period of filling coefficient to an average of 1.15; The drill into the period of the filling coefficient of 1.25, in the filling coefficient of the impact of the soil layer and the rotary foundation. Tianjin crawler hole bottom sometimes have more residual slag, eccentric bit rotary part will be to consolidate slag jammed, in turn, affects the production, this is where the transmission of compressed air, back to the hole cleaning, and make the DTH hammer work for a short time, then improve operations in the center of the new drilling tools.

Sticking BINZUAN traction type drill: 1, except in case of complex formation can make the machine in normal drilling sticking, there are following reasons: (1). Drill bit broken wings; (2). The new change of bits is the original large diameter; (3). When drilling machine displacement in drilling tools in hole deflection; (4). When the drill hole wall openings or falling rocks or encounter big fracture or caves; 5. In case of yellow clip rock fracture zone, rock powder row out; 6. Negligence on the operation, stop to drill for a long time, without blowing off dust, and no mention tool, make the impacter is rock powder. 2, the processing methods: at present the strength of the drill bit, broken wing has been largely put an end to, once encountered in special circumstances, can the hole bottom rock dust blowing off first, and then use a diameter and pore diameter is almost seamless tube, filled with butter or asphalt, connected with traction type drill pipe into the hole bottom, to the bottom of the hole with broken wings, meet after five sticking happens, serious situation is to improve drilling tools, put down, the wind motor does not turn, is not ring, at this time only borrow or use tools to help improve plus torque, restore tool, and then to give spirit while enhance drilling tool until troubleshooting. To drill to give a little pressure, and then gradually increase to the normal working pressure.