Power drill bit mechanism

Abstract

The invention provides a power drill bit mechanism, and belongs to the technical field of drill bits, the power drill bit mechanism is fixedly mounted at the front end of a hollow drill rod, the power drill bit mechanism comprises a motor shell fixedly mounted at the front end of the hollow drill rod, a motor stator is fixedly arranged in the motor shell, and a motor rotor is rotatably arranged in the motor stator; the motor stator and the motor rotor form a complete motor stator and rotor pair, a chip removal channel is formed in the axis of a rotating shaft of the motor rotor, a drill bit is fixedly installed at the output end of the motor rotor, the front end of the chip removal channel is communicated with a chip removal opening of the drill bit, and the rear end of the chip removal channel is communicated with an inner cavity of the hollow drill rod. A special hole bottom motor which is high in cost and short in service life is abandoned, a common motor structure is adopted, the common motor is ingeniously combined with the hollow drill rod and the drill bit, the advantages of high standardization degree, long service life and drill bit rotating speed and torque of the common motor structure are effectively combined, and the drilling efficiency is improved.

Description

technical field [0001] The invention relates to the technical field of drill bits, in particular to a power drill bit mechanism. Background technique [0002] The bottom hole motor currently used is a special equipment manufactured according to the drilling requirements. Its working principle is to pass the pressurized water into the bottom hole motor through the drill pipe. The bottom hole motor is composed of multiple cavities composed of rotor screws and stator rubber sleeves. , by continuously changing the cavity of the motor at the bottom of the hole, the pressure energy is converted into rotational mechanical energy, and the drill bit is further driven to rotate. [0003] However, due to the low pressure of the pressurized water, the large amount of impurities, the low rotational speed of the drill bit, the low torque, and the slow drilling speed; and with the increase of the hole depth, the pipeline pressure loss is large, and the friction resistance is large, which w...

AI Technical Summary

Problems solved by technology

[0003] However, due to the low pressure of the pressurized water, many impurities, the low speed of the drill bit, small torque, and slow drilling speed; and with the increase of the hole depth, the pressure loss of the pipeline is large, and the frictional resistance is large, which will easily lead to large wear and tear of the motor at the bottom of the hole. Short, will inevitably lead to higher costs

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