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Bottom-expanding drill bit

A bottom-expanding drill bit and drilling plate technology, which is applied in the direction of drill bits, drilling equipment, earthwork drilling, etc., can solve the problems of low work efficiency and achieve the effect of improving work efficiency

Inactive Publication Date: 2017-06-13
DALIAN GREAT GOLDEN HORSE INFRASTRUCTURE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] In the prior art, during the piling process of engineering operations, the pile hole needs to be reamed. In the past, the pointed pile was used to press the pile to ream the hole. This method is very inefficient.

Method used

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  • Bottom-expanding drill bit

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Embodiment Construction

[0011] like figure 1 As shown, the reaming drill bit includes a connecting body 1, a mandrel 2, an upper fixing plate 3, a movable drilling plate 4, and a lower fixing plate 7, the mandrel 2 is connected with the connecting body 1, the upper fixing plate 3 and the lower fixing plate 7 Set respectively on the mandrel 2, the movable drill plate 4 is installed on the upper fixed plate 3 and the lower fixed plate 7, the movable drill plate 4 is provided with a tooth seat 5, the tooth seat 5 is provided with a tooth tip 6, and the connecting body 1 is There is a round hole. When working, the drill bit is put into the pile hole in the minimum state. After sitting on the bottom, the drill bit enters the working state, that is, when the drill bit rotates clockwise, the movable drilling plate 4 reaches the maximum diameter, so as to achieve the purpose of reaming After the reaming is completed, the drill bit rotates counterclockwise to retract the movable drilling plate to the minimum ...

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PUM

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Abstract

The invention discloses a bottom expansion drill bit, which comprises a connecting body, a mandrel, an upper fixing plate, a movable drilling plate, and a lower fixing plate, the mandrel is connected with the connecting body, and the upper fixing plate and the lower fixing plate are respectively set On the mandrel, the movable drilling plate is installed on the upper fixed plate and the lower fixed plate. The bottom reaming drill bit of the present invention can rapidly ream the hole, and can greatly improve the working efficiency.

Description

technical field [0001] The invention relates to a reaming drill bit. Background technique [0002] In the prior art, during the piling process of engineering operations, the pile holes need to be reamed. In the past, the pointed piles were used to press the piles to ream the holes, and the work efficiency of this method was very low. Contents of the invention [0003] The purpose of the present invention is to provide a bottom reaming drill which can rapidly ream the hole and greatly improve the working efficiency. [0004] The technical solution adopted by the present invention to achieve the above object is: a bottom expansion drill bit, including a connecting body, a mandrel, an upper fixing plate, a movable drilling plate, and a lower fixing plate, the mandrel is connected with the connecting body, the The upper fixed plate and the lower fixed plate are respectively sleeved on the mandrel, and the movable drilling plate is installed on the upper fixed plate and the lo...

Claims

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Application Information

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IPC IPC(8): E21B10/32
CPCE21B10/32
Inventor 徐世大
Owner DALIAN GREAT GOLDEN HORSE INFRASTRUCTURE