Shaping detection equipment for squeezing and expanding supporting-dish cast-in-place pile

Abstract

The invention discloses shaping detection equipment for a squeezing and expanding supporting-dish cast-in-place pile, comprising a working platform, a rotary hydraulic motor, an extension bar, a squeezing and expanding mechanism for supporting-dish shaping and a hydraulic control center, wherein the rotary hydraulic motor is in transmission connection with the extension bar; the lower end of the extension bar is provided with a hydraulic cylinder; the middle of the inner cavity of the hydraulic cylinder is provided with a hydraulic piston; a piston rod is fixedly connected with the hydraulic piston; the piston rod extends out of the lower end of the hydraulic cylinder; the piston rod is connected with a four connecting rod supporting-dish squeezing and expanding arm; a displacement sensorfor detecting the shift motion of the piston rod is arranged in the hydraulic cylinder; one end of the displacement sensor is installed on the top wall of the upper cavity of the hydraulic cylinder, and the other end of the displacement sensor is installed on the upper end of the hydraulic piston; and the displacement sensor is connected with a detection control module which is used for calculating the size of a supporting-dish hole based on a displacement of the piston rod to realize forming detection. The shaping detection equipment is simple in operation, has strong instantaneity and high working efficiency and effectively adapts to severe working conditions.

Description

technical field [0001] The invention relates to the field of support disc piles, in particular to a forming detection device for extruded and expanded support disc grouting piles. Background technique [0002] The feature of the cast-in-place pile with support disc is that one or more extruded and expanded support discs are added on the basis of ordinary concrete cast-in-place piles. The plate can fundamentally change the stress mechanism of the entire pile foundation, therefore, the quality of the extruded support plate is very important. In the process of pile formation, in addition to the detection of ordinary cast-in-situ piles, the detection content of the pile quality of the support disk pile also includes the detection items of the disk diameter and disk position of the support disk. [0003] Existing disc pile detection includes hole depth detection, hole diameter and disc diameter detection. The detection of hole diameter and disc diameter can be classified into 3...

AI Technical Summary

Problems solved by technology

[0006] When the sliding wire resistance caliper and the acoustic wave hole wall tester are tested, it is necessary to lift the main head of the extruded support plate and lift it out of the pile hole, and then put the test instrument Putting it in from the hole requires another process, rather than completing it at the same time as the support plate is squeezed and expanded; when the caliper is working, the measured area is the two points of contact between the caliper arm and the pile hole, and the working area In addition, after the pile hole is squeezed and expanded, there are silt and water in the pile hole, and the working conditions are relatively bad, which will cause certain problems to the opening and closing of the four well arms of the slide wire resistance caliper. Influenced by the impact of the caliper, strict requirements have been placed on the sealing and waterproofing of the lifting rod of the caliper under sliding conditions.

[0007] Disadvantages of existing measuring instruments: 1) additional lifting equipment is required, and additional equipment is required to put the measuring equipment into the pile hole to be measured during work; 2) The real-time measurement is not enough, the work efficiency is not high, and the hole depth cannot be measured at the moment when the support plate is squeezed and expanded; 3) It is easily affected by the working environment and puts forward high requirements for waterproof and sealing performance

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