Hollow drill bit

A technology of hollow drill bits and drill bits, which is applied in the direction of drill bits, drilling equipment, earthwork drilling, etc., and can solve the problems of solid drill bits such as low impact force, poor guiding performance, and low verticality of holes, so as to ensure construction quality and footage speed , Improve the construction production efficiency, and the effect of high verticality of the hole

Inactive Publication Date: 2010-09-01
CSCEC STRAIT CONSTR & DEV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] The existing drill bit is a solid drill bit, and its disadvantages are: (1) heavy weight, in the case of relatively fixed weight, the length of the drill bit must be limited, so the guiding performance is not good enough, and the verticality of the hole is low; (2) Since the solid drill bit is integrally cast, the outer diameter of the drill bit cannot be changed arbitrarily, so the same drill bit cannot construct piles with different pile diameters; (3) the drill bit will be worn during construction, and the existing solid drill bit It cannot be repaired in time, which affects the construction quality and footage speed; (4) The impact force produced by the solid drill bit on the unit area is small, and the footage speed is slow; (5) The slag cannot be discharged while the drill bit is impacting, the production efficiency is low, and the footage speed is low. slow

Method used

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Embodiment Construction

[0022] The content of the present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments:

[0023] like figure 1 and figure 2 Shown is a schematic diagram of the structure of an embodiment of a hollow drill provided by the present invention, which includes a drill body 1, a lifting part 2 connected to the top of the drill body 1, and a broken tooth 3 located at the bottom of the drill body 1, and is characterized in that: the drill The body 1 is provided with a hollow hole 4 from top to bottom. During use, the external lifting device is connected with the drill body 1 through the hoisting part 2 arranged at the top of the drill body 1 to lift and lower the drill body 1 .

[0024] The hollow hole 4 is provided with a suction device 5 extending from the upper opening of the hollow hole 4 into the hollow hole 4 , and a distance is left between the suction port of the suction device 5 and the bottom of the hollow hole ...

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PUM

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Abstract

The invention relates to a hollow drill bit which comprises a drill bit body, a lifting part connected at the top of the drill bit body and breaking teeth arranged at the bottom of the drill bit body, and is characterized in that a hollow hole from top to bottom is arranged in the drill bit body. The utilization of the hollow drill bit can carry out deslagging while realizing the impact of the hollow drill bit and greatly improve the construction and production efficiency.

Description

technical field [0001] The invention relates to a hollow drill bit. Background technique [0002] The existing drill bit is a solid drill bit, and its disadvantages are: (1) heavy weight, in the case of relatively fixed weight, the length of the drill bit must be limited, so the guiding performance is not good enough, and the verticality of the hole is low; (2) Since the solid drill bit is integrally cast, the outer diameter of the drill bit cannot be changed arbitrarily, so the same drill bit cannot construct piles with different pile diameters; (3) the drill bit will be worn during construction, and the existing solid drill bit It cannot be repaired in time, which affects the construction quality and footage speed; (4) The impact force produced by the solid drill bit on the unit area is small, and the footage speed is slow; (5) The slag cannot be discharged while the drill bit is impacting, the production efficiency is low, and the footage speed is low. slow. Contents o...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21B10/36E21B10/20E21B10/00
Inventor 陈仁开王耀
Owner CSCEC STRAIT CONSTR & DEV
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