A rotary drill bit device for dealing with uneven geology
A rotary drill and drill bit technology, applied in drill bits, drilling equipment, earth-moving drilling, etc., can solve the problems of inability to install reinforcement cages, deflection of holes, affecting the quality of pile foundations, etc., so as to achieve convenient material acquisition and high practicability. , the effect of simple structure
Active Publication Date: 2016-03-23
CHINA RAILWAY NO 10 ENG GRP NO 1 ENG CO LTD
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Problems solved by technology
During the construction of bored piles, due to the geological conditions, it is impossible to have all the ideal uniform soil layers, and when the existing rotary drilling encounters uneven geological conditions during construction, it is easy to cause the drill bit to move towards the softer soil during the drilling process. The side of the pile is deflected, resulting in the deflection of the hole and the inability to install the reinforcement cage, which directly affects the quality of the pile foundation.
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Embodiment Construction
[0012] The present invention will be further described below in conjunction with accompanying drawing by non-limiting embodiment:
[0013] As shown in the accompanying drawings, a rotary drill bit device for dealing with uneven geology includes a rotary drill bit 4, a steel sleeve 2 is sheathed on the outside of the rotary drill bit 4, and the rotary drill bit 4 is located inside the steel sleeve 2, and the rotary drill bit The outer circle of the drill surrounding wall 1 of 4 is welded together with the inner side wall of the upper end of the steel sleeve 2, and several high-strength alloy tooth heads 3 are evenly welded on the lower end surface of the steel sleeve 2 along its circumference. , the length of the steel sleeve 2 is 900 mm, and the lower end surface of the steel sleeve 2 is welded with 12 uniformly distributed alloy tooth heads 3 .
[0014] The rotary drill bit 4 in the present embodiment is the prior art, and the alloy tooth head 3 is also arranged on it, and th...
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The invention discloses an abrasion drill bit device for processing the uneven geology and belongs to the technical field of pile foundation construction. The abrasion drill bit device comprises an abrasion drill bit and is characterized in that the abrasion drill bit is sleeved with a steel sleeve (2), an outer circle of a drill bit surrounding wall (1) of the abrasion drill bit is fixedly connected with the inner side wall in the upper end of the steel sleeve (2). Multiple alloy teeth (3) are evenly arranged on the periphery of the lower end face of the steel sleeve (2). The abrasion drill bit device is simple in structure and capable of effectively ensuring that when the drill bit encounters the uneven geology, the drill bit can proceed stably and vertically, thus, the quality of a formed hole is ensured and the quality of a pile foundation is ensured. The abrasion drill bit device for processing the uneven geology is simple in structure, simple in principle, low in cost and high in practicability and materials are convenient to obtain.
Description
technical field [0001] The invention relates to a rotary drill bit device, in particular to a rotary drill bit device used in pile foundation construction with a rotary drill under uneven geological conditions, and belongs to the technical field of pile foundation construction. Background technique [0002] At present, most bridge foundations use pile foundations, and pile foundations mostly use bored piles constructed by rotary drilling rigs. During the construction of bored piles, due to the geological conditions, it is impossible to have all the ideal uniform soil layers, and when the existing rotary drilling encounters uneven geological conditions during construction, it is easy to cause the drill bit to move towards the softer soil during the drilling process. The quality side is deflected, resulting in the deflection of the hole and the failure of the installation of the reinforcement cage, which directly affects the quality of the pile foundation. Contents of the in...
Claims
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IPC IPC(8): E21B10/00
Inventor 杨基好武尊杨刘德宏冯长振展志永赵大勇孟勇李桂兰
Owner CHINA RAILWAY NO 10 ENG GRP NO 1 ENG CO LTD