A double-speed, double-torque crawler hydraulic cutting drilling rig

Abstract

Provided is a double-speed double-torque crawler type hydraulic cutting drilling machine. A double-speed double-torque control device and a drill rod rotation control device are arranged in a power head, a chain, a chain wheel and a feed motor with a speed reducer are adopted in a pushing mechanism, an air compressor is a large-air-volume rotary screw air compressor and is provided with a dedicated air storage device and a motor protection device, and an intelligent lubrication system is arranged at the top of a drill arm. The cutting drilling machine can adapt to rock strata of different rigidities, and is high in hole drilling efficiency, drill rod rotation control is easy and convenient, and labor intensity is low. In the hole drilling process, applied pressure is large, rod lifting speed is high, the maintenance of the chain is good, the service life is long, and the maintenance cost is low. The air compressor is simple and compact in transmission structure, large in exhaust air rate, stable in air pressure, smooth in slug discharge and high in efficiency. The motor is stopped smoothly, impact vibration is small, the drill arm and the drill rod are high in strength and good in torque resistance and impact resistance, the drill rod is connected with a power head shaft through a coupling with a buffering function, and the power head shaft, a bearing and a transmission gear can be prevented from being damaged.

Description

technical field [0001] The invention relates to an engineering machine, in particular to a crawler-type hydraulic cutting drilling machine with double-speed and double-torque control modes. Background technique [0002] The existing crawler hydraulic cutting drilling rig has the following problems: [0003] 1. The drill pipe power head adopts single-speed and single-torque mode, which cannot adapt to the drilling of rock formations with different hardness, and the efficiency is low; the rotation (cutting) of the drill pipe is controlled by pedals, and the operator is labor-intensive; [0004] 2. Drilling rigs are mostly driven by steel wire oil cylinders, and some are driven by chains. There is no lubricating device for the chains or wire ropes. The lubrication of the chains and wire ropes can only be done manually. The effect is poor, the wear is fast, and the life is short; in addition, the steel wire oil cylinder is used to advance and lift slowly, the wire rope is eas...

AI Technical Summary

Problems solved by technology

[0003] 1. The drill pipe power head adopts single-speed and single-torque mode, which cannot adapt to the drilling of rock formations with different hardness, and the efficiency is low; the rotation (cutting) of the drill pipe is controlled by pedals, and the operator is labor-intensive;

[0004] 2. Drilling rigs are mostly driven by steel wire oil cylinders, and some are driven by chains. There is no lubricating device for the chains or wire ropes. The lubrication of the chains and wire ropes can only be done manually. The effect is poor, the wear is fast, and the life is short; in addition, the steel wire oil cylinder is used to advance and lift slowly, the wire rope is easy to break, the life is short, and the maintenance cost is high;

[0005] 3. Some hydraulic cutting drilling rigs with chain propulsion mechanism do not have brakes, and can only be braked by inserting steel rods into the chain, which is easy to cause damage to the machine, and is prone to safety accidents or damage to the machine during transportation or site transfer;

[0006] 4. The air compressor adopts a piston compressor with small air volume, short service life and long maintenance time. The air compressor air supply system does not have a dedicated air storage tank, and the air supply (air pressure, air volume) is unstable, resulting in discharge during drilling. The ballast is not smooth, which leads to the blockage of the drilling hole and the exhaust hole of the drill bit, and the drilling efficiency is low;

[0007] 5. The drilling arm of the drilling rig is mostly made of steel stamping or tailor-welded parts, which has poor rigidity and is easy to deform and crack during use;

[0008] 6. The drill pipe adopts the conical threaded body used in ordinary coal mines, which has low strength, poor torsion resistance and impact resistance, and often breaks the connecting thread and drill pipe. The drill pipe is directly connected to the power head shaft through the connecting sleeve. The power head shaft, bearings, transmission Gears are damaged by the impact of alternating loads

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