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A Drilling Device with Rear-mounted Automatic Addition of Drill Pipes

A technology of drilling device and feeding device, which is applied in the field of coal mine hydraulic drilling rigs, can solve the problems of only manual connection, no mechanized connection or automatic connection, etc., and achieve the advantages of compact structure, simple structure and optimized structure of the drilling rig Effect

Active Publication Date: 2020-06-09
CHINA COAL TECH & ENG GRP CHONGQING RES INST CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In view of this, in order to solve the problem that the existing drill pipe rear attachment method can only be added manually, but cannot be mechanized or automated, the present invention provides a rear automatic attachment drilling device for drill pipes. The feeding device adopts rear chuck power head structure, mobile braking water braiding technology, drill pipe follow-up clamping technology, drill pipe automatic guiding technology, and synchronous joining technology to realize fast rear joining of drill pipes

Method used

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  • A Drilling Device with Rear-mounted Automatic Addition of Drill Pipes
  • A Drilling Device with Rear-mounted Automatic Addition of Drill Pipes
  • A Drilling Device with Rear-mounted Automatic Addition of Drill Pipes

Examples

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Effect test

Embodiment 1

[0045] For the drilling device with rear-mounted automatic addition of drill pipe whose length is multiple times of the propulsion stroke, only the chuck can be used to transmit torque and propulsion force, and its use methods include:

[0046] A. Drilling: The inverted power head clamps the working drill pipe and rotates, and the carriage is pushed forward under the action of hydraulic thrust to complete the drilling function.

[0047] B. Water braid removal: After the carriage is advanced to the predetermined position, the carriage stops moving, the power head continues to rotate forward, the water braid brake is activated, and the water braid is unscrewed from the working drill pipe.

[0048] C. Drill pipe addition: (the gripper clamps the working drill pipe to prevent the working drill pipe from moving backward)

[0049] a. The water braid moves backward: the water braid telescopic oil cylinder Ⅰ retreats to the limit position, the water braid telescopic oil cylinder II ex...

Embodiment 2

[0061] For the drilling device with the drill pipe whose length is equal to the propulsion stroke, the drill pipe is equipped with an automatic attachment at the rear, and the chuck is used to clamp the drill pipe to transmit the torque and propulsion force. When using the braking water braid, see Example 1 for the method of use. , when using non-braking water braids, its use methods include:

[0062] A. Drilling: The drill pipe is held and rotated by the inverted power head, and the carriage is pushed forward under the action of hydraulic thrust to complete the drilling function.

[0063] B. Dismantling of water braid: After the carriage is advanced to the predetermined position, the clamper clamps the working drill pipe, the power head moves back a certain distance, clamps the water braid main shaft, the power head reverses, and the water braid main shaft separates from the working drill pipe. Release the chuck.

[0064] C. Drill pipe addition: (the gripper clamps the worki...

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Abstract

The invention belongs to the technical field of coal mine hydraulic drilling rigs, and relates to an automatic post connection and drilling device for a drilling pipe, which comprises a frame, an inverted power head sliding relative to the frame, a floating gripper fixed on the power head, a drilling pipe connected to the floating gripper, a drilling pipe feeding device installed below the drilling pipe, a water braid connected to the rear end of the drilling pipe and a water braid telescopic and anti-rotating mechanism installed on the frame. The front end of the drilling pipe is provided with a gripper. Quick drilling pipe post connection can be realized through adopting a rear chuck power head structure, a movable brake-type water braid technology, a drilling pipe following gripping technology, a drilling pipe automatic guiding technology and a synchronous connection technology, and the problems that the existing drilling pipe post connection mode can only be performed manually, andmechanical or automatic connection can not be performed are solved.

Description

technical field [0001] The invention belongs to the technical field of coal mine hydraulic drilling rigs, and relates to a rear-mounted automatic attachment drilling device for drill rods, in particular to a rear-mounted automatic attachment drilling device for drilling underground gas drainage holes in coal mines. Background technique [0002] At present, there are two main methods of joining drill pipes for mining rigs: rear joining or front joining. [0003] Existing mechanized joining or automatic joining of drill pipes are all pre-joining methods, and the manipulator is used to send the drill pipes to the corresponding position for joining. The advantage is that the automatic joining and dismounting of drill pipes can be realized, and the labor intensity is low. The disadvantages are: the drill pipe joining space and storage space are small, and the drill pipe box can only hold a few drill pipes; the drill pipe is short and must be smaller than the driving stroke of th...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21B19/18E21B19/08E21B19/10E21B21/00
CPCE21B19/08E21B19/10E21B19/18E21B21/00
Inventor 李学忠田乐意蒲剑陈航褚立虎史春宝张凌王清峰杨林周涛闫保永田云富
Owner CHINA COAL TECH & ENG GRP CHONGQING RES INST CO LTD