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Down-the-hole drill bit for drilling and reaming

A drill bit and down-the-hole technology, which is applied in the direction of drill bits, drilling equipment, earthwork drilling, etc., can solve the problems of expensive equipment life, complex structure, etc., and achieve the effect of simple structure, high structural strength and time saving

Pending Publication Date: 2019-08-20
无锡贝佳尔科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] Aiming at the deficiencies of the prior art, the present invention provides a down-the-hole drill bit for drilling and reaming, which solves the problems of complex structure, expensive equipment and short service life of the existing drill bit equipment

Method used

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  • Down-the-hole drill bit for drilling and reaming
  • Down-the-hole drill bit for drilling and reaming
  • Down-the-hole drill bit for drilling and reaming

Examples

Experimental program
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Effect test

Embodiment

[0028] see Figure 1-3 , the present invention provides the following technical solutions: a down-the-hole drill for drilling and reaming, comprising a drill body 1, a gap 2 is provided on the drill body 1, and a socket 4 is opened on the side wall of the drill body 1, and the socket The inside of 4 is plugged with an unfolding and folding positioning column 3, and one end of the expanding and folding positioning column 3 passes through the gap 2 and is fixedly connected with the inner wall of the drill body 1, and the surface of the unfolding and folding positioning column 3 is rotationally connected with a first position located inside the gap 2. Movable reaming block 5, the top of the first movable reaming block 5 is fixed with a first alloy block 7, and the drill body 1 is fixed with a second alloy block 8.

[0029] In this embodiment, the drill body 1 is made of metal material, and the position and size of the notch 2 need to be uniformly adapted according to the diameter...

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Abstract

The invention belongs to the technical field of drill bit equipment, in particular to a down-the-hole drill bit for drilling and reaming. The down-the-hole drill bit for drilling and reaming comprisesa drill bit body. A notch is formed in the drill bit body, an insertion hole is opened in the side wall of the drill bit body, a second movable reaming block is inserted into the insertion hole, oneend of the second movable reaming block penetrates the notch and is fixedly connected to the inner wall of the drill bit body, a first movable reaming block located in the notch is rotatably connectedto the surface of the second movable reaming block, a first alloy block is fixed to the top of the first movable reaming block, and a second alloy block is fixed to the drill bit body. By designing the notch, when the first movable reaming block or the second movable reaming block is fixed in the notch, the demand on reaming and drilling is met while the demand on drilling is met. Therefore, after integration, drilling and reaming work can be finished with only one set of equipment, so that the time is saved and the cost is saved, too.

Description

technical field [0001] The invention relates to the technical field of drilling equipment, in particular to a down-the-hole drill used for drilling and reaming. Background technique [0002] Existing drilling and reaming device are generally all separated at present, put into reaming device and carry out reaming after taking out drilling bit after drilling. [0003] Such construction is troublesome at present, and the cost is relatively high. [0004] However, there are drilling and reaming combination drills with relatively high prices on the market. Either the drilling and reaming blades are fixed, and the reaming blades cannot be folded, or the reaming blades are opened by hydraulic cylinders or folded. [0005] The disadvantages of such drill bits are high cost, complex structure, difficult maintenance and short service life. Contents of the invention [0006] (1) Solved technical problems [0007] Aiming at the deficiencies of the prior art, the invention provides...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21B10/32E21B10/43
CPCE21B10/32E21B10/43
Inventor 蔡永奎
Owner 无锡贝佳尔科技有限公司
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