What should be paid attention to in trenchless drilling rig testing

The trenchless drilling rig shall check the tightness of the track (too tight and easy to wear, too loose the track), the wear of the four wheels and the connecting pin, bolts, the connecting fixing bolts of the follower frame, the pin shaft, the finger rubbing degree of the inspection wire rope, the main winding rope clamp, the lifting causes the rotation and lifting causes the pin shaft safety, the gear oil level of the main winding reducer, the retaining ring safety of the drill pipe core joint, the stress joint of the drill pipe (the upper part of section 1, the key bar is worn, and the drill body is severely marked), Drill pipe transmission joint (lower part of drill pipe, deformed and cracked), square head of drill pipe welded outside (cracked), and regularly check and protect the drill pipe in many ways, check the connecting pin shaft of pressure cylinder and power title, motor fixing bolts, square and round fixing bolts, planetary reducer connecting bolts, planetary reducer base fixing bolts, planetary reducer gear oil level, large gearbox cover fixing bolts, large gearbox gear oil level, etc
Check the hydraulic oil level before starting the machine. If it is low dry, add hydraulic oil to the centerline. (The high configuration drilling rig is equipped with an automatic liquid level sensor), and we will investigate the color of the hydraulic oil together. In places with harsh environment (dust, wind and sand), the air filter element (air pump, oxygen) is often cleaned up, and the dust in the pre filter element is cleaned up every day. The liquid level of the auxiliary water tank can be investigated, and the antifreeze shall be filled in time when it is lower than the lower line; When checking the main water tank, park the equipment in a flat place, and check the antifreeze before cold start (there is pressure in the water tank at high temperature to avoid soup injury).
The horizontal directional drilling rig will vibrate during operation, and the joints that do not reach the torque will become loose after a long time. Through manual inspection, visually check whether there is oil leakage at the oil pipe joints. When the drilling rig is operating, the oil pipes will move with the pressure, which will cause external wear (metal holes or corners) for a long time; In addition, the hydraulic pipe will age with the operation hours of the drilling rig. Always check the wear and aging of the hydraulic pipe, and replace it early to prevent pipe explosion.
The output tension and torque of the trenchless drilling rig are a certain share. The key is that the share of these two parameters should be appropriate. It also depends on the driving mode and structure of the drilling rig. The driving structure determines the power conversion of the drilling rig into the output ability and output efficiency of the drilling rig. The power of the mud pump of some small drilling rigs should also be provided by the same engine. The mud pump of large drilling rigs generally has an independent power source. Therefore, When selecting a drilling rig, pay attention to the power source of the mud spring. If it is also driven by an engine, consider the matching and distribution of this part of power.
Dry trenchless drilling rigs are operated continuously. Therefore, when selecting drilling rigs, when the nominal parameters of the drilling rigs are equivalent, it depends on which type of engine has a large continuous output power rather than a large intermittent output power or total power. In this way, it can ensure that the drilling rigs can overcome the resistance in construction with a constant load for a long time, especially in the construction of complex strata or rock bearing strata, Therefore, only strong power output can ensure smooth engineering and outstanding operation of the drilling rig, and extend the service life of the entire drilling rig together. Here, it is emphasized that the power of the engine determines the practical ability of the drilling rig to output tension and torque.