Apparatus for forming several sections, enlarged hole poured concrete piles

Application Number: 00109245
Application Date: 2000.06.19
Publication Number: 1278034
Publication Date: 2000.12.27
Priority Information: 1999/6/21 CN 99109098.5
International: E02D5/44
Applicant(s) Name: Wang Yanlin
Inventor(s) Name: Wang Yanlin
Patent Agency Code: 00000
Patent Agent:
Abstract The present invention relates to a multisection expanding vertical hole for concrete pile forming device which includes drawing mechanism and location box and axial base, the extruding machine is a double-acting multi-stage oil cylinder with its largest diameter cylinder body as active actuator. The invented device has largest pressure against soil layer, and form expanded hole with largest area and ensures the hole forming quality. It is suitable for use on wide range soil quality. The drawing mechanism of said device can quickly separate, expand or contract, several sets extruding machine can be combined to operate simultaneously.