What should be paid attention to in the inspection of trenchless drilling rigs?

For trenchless drilling rigs, check the tightness of the crawler (too tight and easy to wear, too loose the crawler), check the wear degree of the four-wheel belt and the connecting pins and bolts, check the connecting bolts and pins of the follower frame, and check the incense wire rope friction. Refers to the degree, the main winding rope clamp, the pin shaft insurance caused by the rotation caused by the lifting, the gear oil level of the main winding reducer, the safety ring of the drill pipe core section, the force section of the drill pipe (the upper part of the 1 section, the key strip is worn, the drill body Intense marks), drill pipe transmission section (the lower part of the drill pipe, deformation, cracks), the welding outside of the drill pipe square head (cracks), and regularly check and protect the drill pipe from various aspects, check the connection pin of the pressurized oil cylinder and the power head, the motor Fixing bolts, Tianfangdiyuan 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 and dry, add hydraulic oil to the center line. (The high-end drilling rig is equipped with an automatic detection liquid level sensor), and the color of the hydraulic oil is investigated together. When the environment is harsh (dust and sandstorm), the air filter element (air pump, oxygen) is often sorted out, and the dust in the pre-filtered heart is sorted out every day. The liquid level of the auxiliary water tank can be investigated, and the antifreeze liquid can be filled in time when it is lower than the bottom line; when checking the main water tank, the equipment should be parked in a flat place, and the antifreeze liquid should be checked before cold start (there is pressure in the water tank at high temperature to avoid soup damage).

The horizontal directional drilling rig will oscillate, and the joints that do not reach the torque will become loose after a long time. After checking by hand, visually check whether there is oil leakage in the oil pipe joints. When the drilling rig is operating, the oil pipe is moved with the pressure, which will cause external wear for a long time. (metal holes or corners); in addition, as the drilling rig is extended for hours, the hydraulic pipes will age, and the hydraulic oil pipes are often checked for wear and aging. Early replacement can prevent pipe bursts.

The output tension and torque of the trenchless drilling rig are a certain proportion. The key is that the proportion of these two parameters should be appropriate. It also depends on the transmission mode and structure of the drilling rig's walking and rotation. The transmission structure determines the power conversion of the drilling rig into The output capacity and output efficiency of the drilling rig are required. The power of the mud pump of some small drilling rigs is also provided by the same engine. The mud pump of large drilling rigs generally has an independent power source. Therefore, when selecting a drilling rig, you should also pay attention to the power source of the mud spring. , if it is also driven by an engine, the matching and distribution share of this part of the power should also be considered.

The dry trenchless drilling rigs work in succession. Therefore, when selecting the drilling rig, when the nominal parameters of the drilling rig are equal, it is necessary to see which model is matched with the engine that has a larger continuous output power rather than a larger intermittent output power. Or total power, in this way, it can be ensured that the drilling rig can overcome the resistance during construction with a constant load for a long time, especially in complex formations or rock-bearing formations. It can ensure the smooth operation of the project and the excellent operation of the drilling rig, and extend the service life of the entire drilling rig at the same time. It is emphasized here that the power of the engine determines the practical ability of the pulling force and torque that can be output by the drilling rig.