Triangular pyramidal jet grouting pile alloy drill bit

An alloy drill bit, triangular cone technology, applied in drill bits, drilling equipment, earth-moving drilling, etc., can solve the problems that the drill bit is easy to be ground or broken, and cannot drill to the design depth, etc. Extensive, technologically mature effects

Inactive Publication Date: 2015-12-09
施利斌 +2
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  • Abstract
  • Description
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  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In order to overcome the technical problems that the jet grouting pile drill bit cannot drill to the designed depth in the ultra-deep and complex stratum and the drill bit is easily ground or broken during drilling, the present invention provides a method of combining the drill bit with water-air impact. Drilling, at the same time on the side of the drill bit and the head of the triangular conical jet spray pile alloy drill bit with alloy block

Method used

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  • Triangular pyramidal jet grouting pile alloy drill bit
  • Triangular pyramidal jet grouting pile alloy drill bit

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Embodiment Construction

[0010] figure 1 The drill bit alloy block (1), the drill bit (2), and the drill body (3) in the middle form a triangular cone-shaped rotary jet grouting pile alloy drill bit. figure 2 The pipe tip (4), outer nozzle (5), inner nozzle (6), inner pipe (7), outer pipe (8), and outer pipe male joint (9) in the middle constitute the triangular cone-shaped rotary grouting pile alloy drill bit. Internal structure. The triangular cone-shaped rotary jet grouting pile alloy drill bit is a double-spraying head, which is a device for realizing coaxial slurry jetting and drilling. Two nozzles for coaxial jetting of slurry gas are arranged at the nozzle, and the nozzles of the gas are in a ring shape and sleeved outside the high-pressure slurry nozzle. When drilling, the triangular cone-shaped rotary jet grouting pile alloy drill bit is high-pressure water jetted out from the inner nozzle (6) through the inner pipe (7) and punched to destroy the soil, and the high-pressure gas is surrounded...

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Abstract

The invention discloses a triangular pyramidal jet grouting pile alloy drill bit, of a drilling machine, capable of drilling a designed depth in an ultra-deep complex soil layer. A moisture center jet and ball valve compact technology is employed to modify a water path and an air path, the general moisture jet usually from side surface is changed to the aslant downward jet, and alloy blocks are additionally arranged on the side surfaces and the head of the drill bit, so that the technical difficulties of incapability of drilling after the drilling of a certain depth in the ultra-deep complex soil texture and easy abrasion and rupture of the drill bit in a jet grouting pile drill bit are solved.

Description

Technical field [0001] The present invention relates to a drill bit used in a drilling rig for a jet grouting pile during the drilling construction process. Since it was found during the construction process that the existing ordinary drill bits could not meet the construction requirements of this project, the unit researched and improved the drill bit. The drill bit can meet the construction needs of smooth drilling in ultra-deep and complex soil. Background technique [0002] In recent years, with the rapid expansion of national infrastructure projects, the construction scale of railways, highways, airports, wharves and high-rise buildings has continued to expand, and the quality requirements for foundation treatment, foundation pit support and foundation pit water stopping have continued to increase. The spray pile technology has the advantages of simple equipment, convenient construction, fast speed, material saving, high efficiency, low cost, simple operation, and wide appli...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21B10/61E21B10/46
Inventor 施利斌竹相李淳学
Owner 施利斌
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