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Squeezing and expanding device of rotary drilling rig for piling and forming

A technology of extruding and expanding device and rotary drilling rig, which can be used in drilling, sheet pile walls, drilling equipment and other directions without stripping topsoil, and can solve the problems of low control accuracy and complex hydraulic structure.

Active Publication Date: 2017-02-15
CHTC JOVE HEAVY IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The main purpose of the present invention is to provide a rotary drilling rig extrusion device for piling forming, aiming at solving the problems of complicated hydraulic structure and low control precision of existing rotary drilling rigs

Method used

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  • Squeezing and expanding device of rotary drilling rig for piling and forming
  • Squeezing and expanding device of rotary drilling rig for piling and forming
  • Squeezing and expanding device of rotary drilling rig for piling and forming

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Embodiment Construction

[0029] The specific embodiments of the present invention will be further described below in conjunction with the accompanying drawings. It should be noted here that the descriptions of these embodiments are used to help understand the present invention, but are not intended to limit the present invention. In addition, the technical features involved in the various embodiments of the present invention described below may be combined with each other as long as they do not constitute a conflict with each other.

[0030] The invention provides an extrusion expansion device for a rotary drilling rig used for piling forming.

[0031] figure 1 It is a schematic diagram of the expanded structure of the extruded arm mechanism of the extruded device of the rotary drilling rig for piling forming proposed by an embodiment of the present invention. figure 2 for figure 1 Schematic diagram of the structure when the extrusion arm mechanism of the extrusion expansion device of the rotary d...

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Abstract

The invention discloses a squeezing and expanding device of a rotary drilling rig for piling and forming. The squeezing and expanding device comprises a drilling rod, a squeezing and expanding support arm mechanism arranged at the bottom end of the drilling rod and a hydraulic system driving the squeezing and expanding support arm mechanism; the hydraulic system comprises a squeezing and expanding oil cylinder; the squeezing and expanding oil cylinder comprises a vertically-arranged cylinder barrel and an oil cylinder piston rod arranged in the cylinder barrel; an upper supporting seat sleeves the cylinder barrel; the squeezing and expanding support arm mechanism comprises an upper squeezing and expanding arm and a lower squeezing and expanding arm which are identical in length; the lower end of the upper squeezing and expanding arm is hinged to the upper end of the lower squeezing and expanding arm; the upper end of the upper squeezing and expanding arm is connected with the upper supporting seat; the lower end of the lower squeezing and expanding arm is connected with the oil cylinder piston rod; the upper supporting seat and the oil cylinder piston rod move along the axial direction of the cylinder barrel in a facing form or a deviating form, so that the squeezing and expanding support arm mechanism correspondingly expands or shrinks; in addition, the heights of hinging pivots of the upper squeezing and expanding arm and the lower squeezing and expanding arm are unchanged. After a pile disc-shaped cavity of a squeezing and expanding resistant plate is formed, specified section requirements are met, and a pile hole is good in squeezing and expanding shape.

Description

technical field [0001] The invention belongs to the technical field of building construction, and in particular relates to a rotary drilling rig extrusion device for forming piles. Background technique [0002] In construction engineering, the pile foundation is a deep foundation that is composed of piles and caps connected to the top of the pile and bears static and dynamic loads. Pile foundations are widely used in many high-rise buildings, industrial plants, key projects, bridges and docks. According to incomplete statistics, the engineering volume of the pile foundation accounts for about 25% to 30% of the foundation engineering volume. The construction process of the traditional pile foundation is drilling → hole cleaning → aperture detection → lowering the reinforcement cage → pouring concrete. This construction method is relatively simple , strong adaptability, but the bearing capacity is limited, the cost is high, the amount of steel and cement is large, the empty s...

Claims

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Application Information

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IPC IPC(8): E21B7/30E02D5/44
CPCE02D5/44E21B7/30
Inventor 何祥华黎起富刘文彬
Owner CHTC JOVE HEAVY IND
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