Down-the-hole drilling rig is an impact rotary drilling rig. Its internal structure is different from that of a general rock drilling machine. The front end of the impactor directly connects to the drill bit, and the rear end links to the drill rod. During the rock drilling, the impactor dive into the hole, the reciprocating motion of hammer strikes the shank, so that the drill bit produces a swirling force on the bottom of the hole.
DTH drill rig is a new type of energy-saving and high-efficiency drill equipment. It is widely used in large-diameter hole drilling operations in mines and road construction, national defense, water conservancy and stonework. It is also an indispensable rock drilling equipment for exploration in mine, especially for the rugged terrain where other drilling trucks cannot work properly.
According to the walking mode, YG down-the-hole drilling rigs divides into a small-legged rig and large crawler type drilling rig.
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Small rig is a hybrid machine, its power of the drill’s rotation is from the motor, the impact of the impactor comes from the compressed air. The motor converts the electric energy into the rotating torque and transfers to the reducer, so that the drill rod connected to the output shaft rotates. Alloy teeth at the front end of the drill pipe continuously impact rock, and broken rock is ground into powder by the continuously rotating drill bit, discharged compressed air blows the powder to the ground.
Large-scale crawler rigs have been continuously tested in the market, upgraded and improved by the company’s technical team, work efficiency is steadily improved. Rig can realize medium-high wind pressure drilling operation, which has high cost performance, it is popular in mines blasting, urban foundation pit construction, highway construction, hydropower and other engineering projects.
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