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Title:
PILE DRIVER CHAIN-TYPE DRILL
Document Type and Number:
WIPO Patent Application WO/2018/206002
Kind Code:
A1
Abstract:
Disclosed is a pile driver chain-type drill, comprising a chain rack (1a). The chain rack (1a) is provided with at least one chain-type carrier. The chain-type carrier is provided with several cutting teeth (3). An outer end of the cutting teeth (3) is extruded from the chain-type carrier and faces toward an outer side of the chain-type carrier. A chain transmission mechanism (204) is provided between the chain-type carrier and the chain rack (1a), so as to drive the chain-type carrier so that same performs a circumferential rotation or reciprocating swing on the chain rack (1a). The pile driver chain-type drill changes large-sized cutting teeth (3) into small-sized, thereby effectively reducing the stress. By using the pile driver chain-type drill, the effective area of a drill entering a soil body can be reduced, the replacement rate of an original soil body can be reduced, and the pollution caused by replacement mud can be effectively reduced. The cutting teeth (3) have a rational distribution, which helps the refining of rock and soil, thereby improving the structural strength of a cement mixing pile, avoiding floating pile, and greatly reducing the extrusion of surrounding rock and soil.

Inventors:
ZHOU, Zhaodi (No.18, Puqian Xiaogang Street, Beilun Distric, Ningbo Zhejiang 2, 310022, CN)
Application Number:
CN2018/086531
Publication Date:
November 15, 2018
Filing Date:
May 11, 2018
Export Citation:
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Assignee:
ZHOU, Zhaodi (No.18, Puqian Xiaogang Street, Beilun Distric, Ningbo Zhejiang 2, 310022, CN)
International Classes:
E02F5/06; E21B10/00
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