Gear shifting mechanism of power head with adjustable multi-level rotational speed

Abstract

A gear shifting mechanism of a power head with adjustable multi-level rotational speed is characterized by comprising a drill rod and a drill rod driving mechanism. The drill rod driving mechanism comprises two or more groups of motors arranged in parallel. The groups of motors jointly drive a gear shaft, a sliding gear and a shifting fork mechanism are arranged on the gear shaft, the sliding gear is respectively meshed with more than one group of gears under the action of the shifting fork mechanism, and the gears are sleeved on the drill rod. The gear shifting mechanism of the power head with adjustable multi-level rotational speed can meet various requirements on rotational speed and torque by the aid of a gear system, shortcomings of the traditional power head are overcome, wide torque adjustment range can be provided owing to drive of the multiple motors, multi-level rotational speed adjustment can be realized by the aid of the shifting fork mechanism and the sliding gear, and the gear shifting mechanism is reasonable in design, simple in operation, stable in transmission and wide in application range.

Description

technical field [0001] The invention belongs to a power head of a rotating mechanism in an engineering drilling machine, and in particular relates to a multi-stage speed-adjustable power head shifting mechanism with multi-stage speed adjustable. Background technique [0002] Among the existing engineering drilling machines, the rotary vibrating power head is the most commonly used equipment for foundation pile foundation construction and large-diameter drilling construction. In the prior art, the rotary vibration power head is mainly composed of a rotary power machine, a vibration power machine, a rotary vibrator, a hydraulic power hammer and a striking drill rod. Existing power heads generally use motors as the power source to meet the limitations of the motor itself, intelligently provide high-speed low-torque or low-speed high-torque power drive, and the range of drilling parameters to choose from is very small, which cannot meet various engineering constructions environ...

AI Technical Summary

Problems solved by technology

Existing power heads generally use motors as the power source to meet the limitations of the motor itself, intelligently provide high-speed low-torque or low-speed high-torque power drive, and the range of drilling parameters to choose from is very small, which cannot meet various engineering constructions environmental requirements

In addition, the rotation speed of the existing power head can only achieve two or three adjustable rotation speeds, and the adjustment range is very small, which cannot meet the requirements of the rotation speed and torque diversity and wide-range transformation required in the construction of engineering drilling machinery. It is used in various formations, and the use of multiple power heads with different rotating speeds does not meet the needs of economy and construction efficiency.

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