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A kind of earth-squeezing drill bit used for bolt prefabricated hole construction

A technology of prefabricated holes and drill bits, which is applied in the direction of drill bits, earthwork drilling, drilling equipment, etc., which can solve the problems of affecting the construction progress, the anchoring force of the anchor rod in the soil layer between the stone body and the surrounding soil wall is small, and the construction efficiency is low. Achieve the effects of saving construction time, solving the problem of collapsed holes, and improving construction efficiency

Active Publication Date: 2019-09-03
YANGTZE UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the construction process of using core drilling to form holes, it is necessary to repeatedly lift the drill to extract soil; in the process of using three-page drilling to form holes, it is necessary to use a pump to press in the mud to take out the mud; in the process of using auger drilling to form holes, It is necessary to use the spiral blade to take the mud out of the anchor hole; these three types of drill bits need to be lifted repeatedly to discharge the mud in the hole during use, which not only makes the construction efficiency low, affects the construction progress, but also makes the soil anchor The anchoring force between the anchor stone body and the surrounding soil wall is relatively small

Method used

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  • A kind of earth-squeezing drill bit used for bolt prefabricated hole construction
  • A kind of earth-squeezing drill bit used for bolt prefabricated hole construction
  • A kind of earth-squeezing drill bit used for bolt prefabricated hole construction

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] Embodiment one: if figure 1 As shown, the present invention relates to a soil-squeezing drill bit for the construction of bolt pre-formed holes. The drill bit includes a soil-squeeze body 1 and a cylindrical connector 2. The interior of the soil body 1 is provided with a ventilation hole 3 along the axial direction, and the ventilation hole 3 runs through the inside of the extruded soil body 1, and the air outlet of the ventilation hole 3 is arranged on the top surface of the conical cylinder, and the ventilation hole 3 A plug 4 is provided at the air outlet of the cylinder, and a threaded thread 5 for connecting the drill rod of the drilling rig is provided inside the cylindrical connecting piece 2 along the axial direction.

[0020] Further, as Figure 4 As shown, the plug 4 is composed of a connected cap 4.1, a plug handle 4.2 and a connecting block 4.3, the cap 4.1 is a cone, the connecting block 4.3 is a cylinder, the cap 4.1 and the connecting block 4.3 The diam...

Embodiment 2

[0022] Embodiment two: if figure 2 As shown, the present invention relates to a soil-squeezing drill bit for the construction of bolt preformed holes. The inside of the body 1 also has a radial through hole 7 that communicates with the air passage 3 along the radial direction. The air outlet of the radial through hole 7 is arranged on the outer wall of the cone, and the air outlet of the radial through hole 7 Plugs 4 are respectively arranged at each place, and a screw thread 5 for connecting the drill rod of the drilling rig is also arranged inside the cylindrical connecting member 2 along the axial direction.

[0023] Further, as Figure 6 As shown, the plug 4 is composed of a connected cap 4.1, a plug handle 4.2 and a connecting block 4.3, the cap 4.1 is a cone or disc structure, the connecting block 4.3 is a cylinder, and the cap 4.1 And the diameter of the bottom surface of the connection block 4.3 is greater than the diameter of the air outlet of the ventilation hole ...

Embodiment 3

[0024] Embodiment three: as image 3 As shown, the present invention relates to a soil-squeezing drill bit for the construction of bolt pre-formed holes. The drill bit includes a soil-squeezing body 1 and a cylindrical connector 2, and the soil-squeezing body 1 is connected by a circular platform 1.1 and a cone 1.2. Composition, the radial through hole 7 is set in the cone 1.2, the vent hole 3 is connected to the radial through hole 7 and one end extends into the cone 1.2, the air outlet of each radial through hole 7 Blind holes 8 are respectively provided, and the air outlets of the blind holes 8 are arranged on both sides of the end face of the cone 1.2, the air outlets of the blind holes 8 are respectively provided with plugs 4, and the structure of the plugs 4 is the same as The structure of the plug 4 in the second embodiment is the same, and the inside of the cylindrical connector 2 is provided with a threaded thread 5 for connecting the drill pipe of the drilling rig al...

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Abstract

The invention discloses a soil-squeezing type drill bit for anchorrod pre-forming hole construction. The drill bit is characterized by comprising a soil-squeezing body and a cylindrical connecting piece which are integrally connected, wherein a ventilating duct is formed inside the soil-squeezing body along the axial direction; a plug is arranged at an air outlet of the ventilating duct; a screw thread is arranged inside the cylindrical connecting piece along the axial direction, and is used for connecting a drill pipe of a drilling machine. According to the soil-squeezing type drill for anchor rod pre-forming hole construction, waste slag does not need to be discharged from the anchor hole during construction, the construction efficiency can be greatly improved, and the construction field is kept clean and tidy; and the soil body for the wall of the anchor hole is compact and tight by adopting a soil-squeezing and hole-forming mode, so that larger anchoring force is provided.

Description

technical field [0001] The invention relates to a drill bit for the pre-hole construction of anchor rods, in particular to a soil-squeezing drill bit for the pre-hole construction of anchor rods. Background technique [0002] At present, there are three types of drill bits commonly used in the construction of bolt preformed holes in geotechnical anchoring engineering, including core drills, three-page drills and auger drills. In the construction process of using core drilling to form holes, it is necessary to repeatedly lift the drill to extract soil; in the process of using three-page drilling to form holes, it is necessary to use a pump to press in the mud to take out the mud; in the process of using auger drilling to form holes, It is necessary to use the spiral blade to take the mud out of the anchor hole; these three types of drill bits need to be lifted repeatedly to discharge the mud in the hole during use, which not only makes the construction efficiency low, affects...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21B10/62E21B10/26
Inventor 杨学祥肖桃李胡银杨语驿
Owner YANGTZE UNIVERSITY
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