Drill rod automatic loading and unloading follow-up feeding system of drilling machine and using method thereof

By setting up a first reversing valve and energy accumulator in the drilling rig's automatic loading and unloading drill pipe system, the problem of matching the rotation speed of the power head and the feeding and pulling speed is solved, and flexible loading and unloading drill pipe is realized, reducing thread wear and improving the reliability and service life of drill pipe connection.

CN120426006AActive Publication Date: 2025-08-05SHANDONG XIANGDE ELECTROMECHANICAL
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Patent Information

Application Number
CN202510670498.0
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2025-05-23
Publication Date
2025-08-05
Estimated Expiration
2045-05-23

AI Technical Summary

Technical Problem

It is difficult for existing underground drilling rigs to match the power head rotation speed and feed/pull speed without manual control, resulting in severe wear of drill pipe connection threads, reducing reliability and service life.

Method used

By setting a first reversing valve and energy accumulator in the follow-up feed system of the drilling rig, the rotation speed of the power head rotation motor is matched to the speed of the feeding cylinder, and the accumulator is used to compensate for the incoming thread angle deviation, reducing rigid operation, and using a pressure relief valve and a hydraulically controlled check valve to avoid jamming.

Benefits of technology

It realizes flexible operation during drill pipe loading and unloading, reduces thread wear, and improves the reliability and service life of drill pipe connection.

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Abstract

The invention relates to an automatic drill rod loading and unloading follow-up feeding system of a drilling machine, which comprises a first reversing valve positioned on an oil inlet and return pipeline of a follow-up motor, a first oil pipe connected with a liquid inlet of the follow-up motor and a first oil cylinder oil pipe connected with a liquid inlet of a feeding and pulling oil cylinder, and the second oil cylinder oil pipe is connected with a liquid outlet of the feeding pulling oil cylinder. When the device is used, the follow-up motor supplies hydraulic oil to the feeding and pulling oil cylinder through the arrangement of the first reversing valve, and the power head rotary motor drives the power box output shaft and the follow-up motor to rotate through the power box input shaft, so that the rotation of the output shaft and the feeding of the output shaft are synchronously carried out under the driving of one power; fixed-proportion matching between the rotating speed of the power head rotating motor and the feeding / pulling speed of the feeding and pulling oil cylinder is achieved, one circle of rotation of the power head is achieved through adjustment, the feeding / pulling displacement distance is a thread buckle distance of a drill rod connecting thread, and therefore the drill rod can be conveniently assembled and disassembled.
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