Important factors to consider when choosing a tunnel drilling rig for coal mines

When selecting a tunnel drilling rig, the main data is the pulling force. Other data are easily ignored. The correct principle should be: first check whether the pulling force value of the drilling rig is within the required range, and the output torque of the drilling rig and the parameters of the drill pipe are the key. Data, of course, these capabilities of the drilling rig are determined by the heart of the drilling rig – the engine, so when choosing a drilling rig, you also need to look at the engine power, which determines whether the drilling rig can output sustained power for a long time.

Therefore, when choosing a drilling rig, it is recommended to consider these five aspects in order: a. engine power, b. torque, c. drill pipe size, d. push-pull force of the drilling rig, e. the level and scope of technical service of the manufacturer or sales company.

Strong power is the basis of drilling equipment – the key parameter is the continuous output power of the engine:
Since directional drilling rigs work continuously, when selecting a drilling rig, when the nominal parameters of the drilling rig are the same, it depends on which model of engine has the larger continuous output power, rather than the larger intermittent output power or total total output power. Power, in this way, can ensure that the drilling rig can overcome the resistance in construction with constant load capacity for a long time, which is especially important when carrying out projects with complex strata or stony strata. Therefore, only strong power output can ensure The project goes smoothly and the drilling rig works well, while extending the service life of the entire drilling rig. What is important to point out here is that the power of the engine determines the actual ability of the drilling rig to output pulling force and torque. We can also see from the parameter tables of various drilling rigs: The output pulling force and torque of the drilling rig are in a certain proportion. The key is that the ratio of these two parameters must be appropriate. It also depends on the transmission mode and structure of the drilling rig’s walking and rotation. The transmission structure determines the conversion of the drilling rig’s power into the drilling rig’s output capacity and In terms of output efficiency, the mud pumps of some small drilling rigs are powered by the same engine. The mud pumps of large drilling rigs generally have independent power sources. Therefore, when choosing a drilling rig, you should also pay attention to the power source of the mud pump. If the same Driven by an engine, the matching and distribution ratio of this part of the power must also be considered.