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All-hydraulic drill power head with double shafts

A drilling rig power head and full hydraulic technology, applied in the direction of rotary drilling rigs, drill pipes, drill pipes, etc., can solve the problem of rubber sleeves being easily damaged, and achieve the effects of ensuring work efficiency, reducing equipment maintenance time, and saving production costs

Inactive Publication Date: 2016-03-09
重庆铁木科技发展有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a fully hydraulic drilling rig power head with two shafts, which does not use the chuck to drive the drilling tool during the drilling process, so as to solve the problem that the slips or rubber sleeves of the key parts in the chuck are easily damaged

Method used

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  • All-hydraulic drill power head with double shafts
  • All-hydraulic drill power head with double shafts

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] Such as figure 1 The drill power head shown includes a hydraulic motor 1, a gearbox 2 and a normally open hydraulic booster chuck 5 fixed on the front side of the gearbox.

[0019] A rotatable hollow main shaft 3 is arranged inside the gearbox, and the power provided by the hydraulic motor 1 is transmitted to the main shaft 3 through the gearbox 2 .

[0020] A drive shaft 4 is provided in the inner hole of the main shaft 3, and the tail of the main shaft and the drive shaft are fixed by a fastening device 402 to realize the axial and circumferential fixation between the main shaft and the drive shaft, and realize the coaxial rotation of the two shafts. The main shaft torque is transmitted to the drive shaft, and the drive shaft obtains the axial power required for propulsion and extraction.

[0021] The connection between the main shaft and the drive shaft is not limited to the structure described in this embodiment, and the connection structure of internal and externa...

Embodiment 2

[0028] see figure 2 , the present embodiment adopts the normally open hydraulic rubber sleeve chuck 6, and its structural form is basically the same as that of the existing rubber sleeve normally open chuck. Rubber sleeve 602 on slips. A pressure oil passage 301 communicating with the chuck is provided on the main shaft 3 . The remaining technical features of the power head described in this embodiment are the same as those in Embodiment 1, and will not be repeated here.

[0029] Similarly, when the power head described in this embodiment is drilling, it is the same as that in Embodiment 1. It is also threadedly connected to the drilling tool through the external thread mounting part at the front end of the drive shaft to drive the drilling tool to rotate forward and move axially.

[0030] After the drilling work is completed, the drive shaft can be removed or retained as required, the drilling tool 7 reaches the working position of the slips, and the pressure oil is introd...

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Abstract

The invention discloses an all-hydraulic drill power head with double shafts, comprising a hydraulic motor, a gearbox and a chuck, wherein a hollow spindle is rotatably arranged in the gearbox, a driving shaft which coaxially rotates with the spindle and is axially fixed relative to the spindle is arranged in the inner hole of the spindle, and a mounting part used for being connected with a drilling tool is arranged at the front end of the driving shaft. By using the power head, use of a drilling machine chuck in the drilling working condition with impulsive load can be avoided, and the problem of easy damage of key parts in the chuck is solved.

Description

technical field [0001] The invention relates to a novel full-hydraulic drill power head with two shafts. Background technique [0002] The power head of the drilling rig plays the role of providing torsional power and transmitting the torque to the drilling tool, and making the drilling tool move along with the power head. The connection between the power head and the drilling tool mainly has two ways: thread direct connection and hollow thru-shaft chuck connection. Among them, the threaded connection between the power head and the drilling tool is reliable for torque transmission. The torque transmission is only related to the performance of the power head and the strength of the drill pipe. The connection is reliable, but the drill pipe cannot be automatically disassembled during the tripping process. At present, there are mainly two types of through-axis chucks: normally closed chucks with disc spring reinforcement and hydraulic direct-acting rubber sleeve type normally ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21B3/02E21B19/10
CPCE21B3/02E21B19/10
Inventor 陈爱和王飞杨亚黎
Owner 重庆铁木科技发展有限公司