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Floatable drill rod connecting device

A technology for connecting devices and drill pipes, which is applied in the direction of drill pipes, drill pipes, earthwork drilling, etc. It can solve the problems of active joints without floating functions, shorten maintenance time, reduce the probability of direct damage, and prolong service life. Effect

Active Publication Date: 2021-01-22
CHINA COAL TECH ENG GRP CHONGQING RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In view of this, the object of the present invention is to provide a floating drill pipe connection device to solve the problem that the active joint has no floating function in the axial direction

Method used

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  • Floatable drill rod connecting device
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  • Floatable drill rod connecting device

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Embodiment Construction

[0027] Embodiments of the present invention are described below through specific examples, and those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification. The present invention can also be implemented or applied through other different specific implementation modes, and various modifications or changes can be made to the details in this specification based on different viewpoints and applications without departing from the spirit of the present invention. It should be noted that the diagrams provided in the following embodiments are only schematically illustrating the basic concept of the present invention, and the following embodiments and the features in the embodiments can be combined with each other in the case of no conflict.

[0028] Wherein, the accompanying drawings are for illustrative purposes only, and represent only schematic diagrams, rather than physical drawings, and should...

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Abstract

The invention belongs to the field of mechanical design, and relates to a floatable drill rod connecting device. The floatable drill rod connecting device is installed on a power head spindle and comprises a connector body connected with the power head spindle in a matched mode and a limiting device arranged outside the connector body and the power head spindle. An elastic piece with a floating positioning function is further arranged between the connector body and the power head spindle. The floatable drill rod connecting device has an axial floating function, rigid extrusion and friction between the connector body and threads of a front end drill rod are changed into an elastic gradual change process, the threads of the connector body are effectively protected, and the service life of the connector body is prolonged. By arranging a connecting sleeve, dynamic connection which generates impact for a long time is transferred between the connector body and the connecting sleeve, and thespindle and the connecting sleeve are in pin connection without impact, so that the probability that the spindle is directly damaged is greatly reduced, the maintenance cost is reduced, and the maintenance time is shortened.

Description

technical field [0001] The invention belongs to the field of mechanical design and relates to a floating drill pipe connecting device. Background technique [0002] The automatic drilling rig is a new type of coal mine drilling equipment developed in recent years. Many automatic drilling rigs adopt the working mode of loading the drill pipe from the middle of the power head and the holder. In order to improve the reliability of related structures, the connection between the power head and the drill pipe generally adopts the active joint instead of the rubber sleeve chuck of the traditional drilling rig, that is, a joint (male) corresponding to the drill pipe is set on the power head Female head can be) connected with the drill pipe. During the jointing process of the drill pipe, the active joint needs to be driven by the power head while rotating and advancing, and the rotation and advancing speed cannot be 100% precisely matched according to the relationship between the pi...

Claims

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Application Information

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IPC IPC(8): E21B19/16
CPCE21B19/16
Inventor 辛德忠陈航万军蒲剑王清峰刘小华吕晋军唐敏马振纲张始斋杨林万园周富佳雷万年秦怡杨燕鸽
Owner CHINA COAL TECH ENG GRP CHONGQING RES INST
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