Telescopic drill pipe:

1. Dedicated multifunctional telescopic drill pipe, without secondary connection, can realize deep hole operation, and has high construction efficiency, and basically has no dependence on personnel and auxiliary equipment.

2. It can realize the mutual switching between rotary digging working conditions and down-the-hole hammer working conditions.

Tracheal winch:

The gas supply pipeline collection system of the rotary down-the-hole hammer deep-hole drilling rig makes the air pipe tidy and freely retractable, which can independently adapt to the working conditions of the rotary drilling rig. During the construction of the drilling rig, the air pipe is in a tight state at any time, and it floats closely with the lowering and lifting of the drill pipe, so that the air pipe will not be over-discharged or broken.

Full-time rotation:

1. The air pipe is built-in, which can ventilate from the inside of the drill pipe, and the drill pipe can realize full-time forward or reverse rotation.

2. The hole diameter is small, it needs to be slightly larger than the outer diameter of the drill pipe, and there is no damage to the trachea.

Low requirements for drilling rigs, high rock-entry efficiency, good hole-forming verticality, and significant economic benefits.

Advantages of construction method:

1. Adopt cluster type (bundled) DTH hammer + slag collecting bucket to take slag. The slag only needs to be blown by the compressed air discharged by the DTH hammer to 5-6 meters from the bottom of the hole (about 1 to 2 meters above the slag storage tank) , Fall into the slag storage tank. The air volume required for 800mm holes is only 60~80m3, which can save 1~2 sets of air compressors of about 30m3.

2. The rotation speed is low, the drill tool has less collision with the hole wall, and the hammer is inlaid with cemented carbide, which is not only good for rock breaking, but also has a better life, which greatly reduces the consumption of the hammer during construction and saves costs. .

3. During the construction of the DTH hammer, the rotary drilling rig only needs to provide the rotary power and the reaction force to resist the impact of the DTH hammer when drilling. Therefore, the weight and capacity of the drilling rig can be reduced, which creates very favorable conditions for large-diameter deep-hole hard rock drilling.

The XHRQ series rotary down-the-hole hammer multi-section deep hole drilling rig solves the construction problems of deep hole and ultra-deep hole drilling operations.

 1. Use the existing market's rotary drilling rig to carry out modular transformation, without destroying the original function of the rotary drilling rig, through the transformation of the rotary drilling pipe, the lifter and the rotary drilling pipe are joined together, and the core section of the drill pipe is used. The inner hole of the steel pipe and the lifter (patent number: ZL2020020775051.2) with the built-in channel of the patent technology form a high-pressure gas channel to provide a power source for the connected DTH hammer. The multi-section expansion and contraction characteristics of the rotary drill pipe (special submersible The hole hammer drill pipe has been applied for a patent and is under approval) to realize the operation of ultra-deep hard holes. It can be said that as long as the rotary drill pipe can be extended, the deep hole drilling rig can enter the rock (according to the existing rotary drilling rigs in the market, the input The rock depth can exceed 100 meters).

2. In order to ensure the function of the rotary drilling rig, only a transition section needs to be added to realize the rapid switching between the rotary drilling function and the down-the-hole hammer function.

3. Increase the winch of the snorkel (autonomously adapt to the working conditions of the rotary drilling rig), on the basis of realizing the expansion and contraction of the trachea (independently developed and customized, withstands 600kg of tension) and the synchronization of the lifting and lowering of the drill pipe, which facilitates the neat storage of the trachea Prevent accidental damage to the trachea. During the construction of the drilling rig, the air pipe is in a tight state at any time, and it floats closely with the lowering and lifting of the drill pipe, so that the air pipe will not be over-discharged or broken.