Variable bearing disk club-footed pile forming equipment

Abstract

The present invention relates to a variable bearing-disc enlarged bottom pile, its forming method and forming equipment. The variable bearing discplate pile includes a pile column, in which there are several bearing discs with different diameters, these bearing discs are placed at the different positions of the pile column. Its forming method includes the steps: 1). driving the pile hole; 2). squeezing and expanding to form cirfumferential conical bearing discs with different diameters; and 3) inserting steel reinforcement cage and then pouring concrete to form the invented variable bearing-disc enlarged bottom pile. Its forming equipment is formed from components of oil cylinder, machine frame, upper pin shaft, lower pin shaft, guide block, upper supporting arms, changeable lower supporting arm, superstatic fixed end head and others.

Description

1. Technical field [0001] The invention relates to a forming device of a variable bearing plate expanded bottom pile, which belongs to a forming equipment extruded and expanded with a plurality of variable bearing plate expanded bottom foundation piles. 2. Background technology [0002] At present, the foundation piles used in engineering are generally straight piles, and their bearing capacity is mainly borne by the pile side friction resistance, and the end bearing capacity is less exerted. Therefore, it has a small bearing capacity of a single pile, a thick and long single pile, and a large amount of raw materials. Disadvantages such as high cost and long construction period. At present, the equipment for the bearing plate of the extruded and expanded bottom pile is mainly composed of a fixed support arm, a frame and an oil cylinder. Since the piston rod of the oil cylinder is directly connected with the fixed support arm through the pin shaft, during construction, the up...

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Problems solved by technology

[0003] The purpose of the present invention is to solve the technical difficulties existing in the existing molding equipment, such as uneven force on the upper and lower sides of the support arm, easy shearing of the pin shaft, large body size, and difficulty in maintenance, and to provide a support arm that can change the diameter of the support plate. Forming equipment for variable load-bearing disc expansion bottom piles with uniform force, pin shafts that are not easy to be cut off and easy to maintain

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