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GPS drilling machine drill and construction method for hole forming of pile foundation through GPS drilling machine

A drilling rig and drill bit technology, which is used in infrastructure engineering, sheet pile walls, buildings, etc., can solve problems such as obstacles cannot be drilled, drill bits and drill pipes are broken, and hole-forming construction operations cannot be performed, so as to improve operation efficiency, The effect of uniform force and prevention of breakage

Inactive Publication Date: 2017-09-15
NO 2 CONSTR GRP CO LTD OF SHANGHAI CONSTR GRP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The drill bit of the existing GPS drilling rig often encounters obstacles and cannot drill down during the construction process, resulting in frequent breakage of the drill bit and drill pipe, making it impossible to carry out hole-forming operations

Method used

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  • GPS drilling machine drill and construction method for hole forming of pile foundation through GPS drilling machine
  • GPS drilling machine drill and construction method for hole forming of pile foundation through GPS drilling machine
  • GPS drilling machine drill and construction method for hole forming of pile foundation through GPS drilling machine

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] combine figure 1 As shown, a GPS drilling rig drill bit is preferably used to assemble on a GPS-20 type drilling rig. It includes a drill rod 1, the peripheral surface of the lower end of the drill rod is fixed to a hollow cylindrical drill barrel 3 through a drill bit support body 2, the bottom end of the drill rod is flush with the drill barrel or extends out of the drill barrel, and the drill barrel The bottom of the drill rod and the bottom of the drill rod are fixed with some diamond drill teeth 4, and the number of drill teeth at the bottom of the drill rod is preferably 4. As a preferred solution, the drill rod support body is composed of several support rods fixed between the drill barrel and the drill rod. The number of the support rods is 3 or 4, and the included angles between adjacent support rods are equal. According to construction requirements, the length of the drilling barrel is 0.5m to 1.2m. The diameter of the drill barrel is 3 to 5 times the diame...

Embodiment 2

[0034] The difference between this embodiment and Embodiment 1 is that the bottom of the drill bit support body is also fixed with drill teeth, which is beneficial to speed up grinding through the reinforced soil and improve the working efficiency.

[0035] The working principle of the present invention is that the drill teeth are fixed at the bottom of the drill pipe and the drill barrel at the same time. During the construction operation, the drill teeth on the drill barrel and the drill teeth on the drill pipe work together to share the force and make it easier to grind. Through the reinforced soil, it is not easy to break the drill bit and drill pipe. When the bottom end of the drill pipe extends out of the drilling barrel, the drill pipe first touches the working surface during the rotating operation, and the reinforced soil on the working surface is broken from the drill pipe point, and then the drilling barrel touches the working surface, relying on the drill teeth on th...

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Abstract

The invention relates to a GPS drilling machine drill and a construction method for hole forming of a pile foundation through a GPS drilling machine. The GPS drilling machine drill comprises a drilling rod (1). The peripheral surface of the lower end of the drilling rod is fixedly connected with a hollow cylindrical drilling barrel (3) through a drill supporting body (2). The bottom end of the drilling rod is flush with the drilling barrel or stretches out of the drilling barrel. A plurality of drilling teeth (4) are fixedly arranged at the bottom of the drilling barrel and the bottom of the drilling rod correspondingly. Drilling teeth are also fixedly arranged at the bottom of the drill supporting body preferably. The drill supporting body is preferably composed of a plurality of supporting rods fixedly connected between the drilling barrel and the drilling rod, and the included angles between the adjacent supporting rods are the same. The drilling teeth are fixedly arranged at the bottoms of the drilling rod and the drilling barrel simultaneously, during construction operation, the drilling teeth on the drilling barrel and the drilling teeth on the drilling rod act jointly to enable borne force to be shared, reinforced soil masses are easier to wear out, therefore, fracturing of the drill and the drilling rod is greatly reduced, the construction cost is reduced, and the construction efficiency is improved.

Description

technical field [0001] The invention relates to a GPS drilling rig bit, which is used for clearing and reinforcing soil to complete pile foundation hole forming operations, and is especially suitable for pile foundation hole forming operations performed by a pile grinding process. The invention also relates to a GPS drilling rig pile foundation hole forming construction method using the drill bit. Background technique [0002] GPS series engineering drilling rigs are suitable for pouring pile hole construction in high-rise buildings, ports, dams, bridges, foundation construction, etc., and can also be used for drilling large-diameter water wells. The maximum drilling diameter is 3m, and the maximum drilling depth is 130m. The reverse circulation drilling technology improves the drilling efficiency and the hole quality is good. This series of drilling rigs are easy to operate and reliable in performance. They are widely used in foundation construction and enjoy a high reputa...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21B10/43E02D5/34
CPCE21B10/43E02D5/34
Inventor 李涛顾阳华王金勇丁杰
Owner NO 2 CONSTR GRP CO LTD OF SHANGHAI CONSTR GRP