Triangular pyramidal jet grouting pile alloy drill bit

An alloy drill bit, triangular conical technology, applied in the direction of drill bit, drilling equipment, earthwork drilling and mining, etc., can solve the problems that the drill bit is easy to be ground or broken, and cannot drill to the designed depth, so as to overcome the difficulty of pile formation and the scope of application Extensive, the effect of overcoming technical difficulties
CN104420831AInactive Publication Date: 2015-03-18SHANGHAI ERSHIYE CONSTR CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
SHANGHAI ERSHIYE CONSTR CO LTD
Publication Date
2015-03-18
Estimated Expiration
Not applicable · inactive patent

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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 a ultradeep complex soil layer. A moisture center jet and ball valve compact technology is introduced to modify a water way and an air way, the general moisture jet from side surface at ordinary times 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 ultradeep complex soil texture and easy abrasion and rupture of the drill bit in a jet grouting pile drill bit are solved.
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Description

Technical field

[0001] The present invention relates to a kind of drill bit of the drilling rig during the drilling construction process of rotary grouting piles. During the construction process, it was found that the existing common drill bit could not meet the construction requirements of this project, so the unit researched and improved the drill bit. After the improvement 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 development of national capital construction projects, the construction scale of railways, highways, airports, docks and high-rise buildings has continued to expand, and the quality requirements for foundation treatment, foundation pit support and foundation pit water sealing have continued to increase. The spray pile technology has the advantages of simple equipment, convenient construction, fast speed, material saving, high efficiency, low cost,...

Claims

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