Hydraulic power shock excitation equipment for building foundation pile

Abstract

The invention relates to hydraulic power shock excitation equipment for building a foundation pile, comprising a base (1), a damping pad (2), a power shock excitation part and a lifting hook part, and the power shock excitation part is composed of a hydraulic-driven power shock excitation mechanism and a hydraulic pump station part. The characteristics are that: the hydraulic-driven power shock excitation mechanism is composed of a hydraulic cylinder assembly and a moving hammer assembly. The lifting hook part is composed of a lifting hook assembly (9), a lifting hook hydraulic cylinder (10) and a piston rod (27). The hydraulic pump station part is composed of a pressure gauge (11), an oil pipe (12), a pump station motor (13) and a hydraulic pump station (14). The cross section of a moving hammer body (5) of the moving hammer assembly of the hydraulic-driven power shock excitation mechanism is designed into circle or equilateral polygon. By adopting the hydraulic technology, the energy is saved, the environment is protected, the lifting property is improved, multiple hammering actions are performed with one-time centering, the transmission is reliable, the weight of a hammer is increased, the hammer lifting time is shortened, the automatic hook separation is achieved, the time and the labor force are saved, and the working efficiency is high.

Description

Technical field: [0001] The invention relates to a dynamic excitation equipment for pile foundations in the construction industry, in particular to a hydraulic dynamic excitation equipment for building foundation piles. Background technique: [0002] The pile foundation in the construction industry has a long history, and the prototype of the pile has been found in Chilean ancient cultural sites with a history of 12,000 years ago. Some high-rise buildings built in Shanghai, my country in the 1930s have adopted immersed tube grouting pile foundations. At present, more and more pile foundations are used in high-rise buildings and national key projects, and people pay more and more attention to the test method of pile foundation bearing capacity. The determination of the bearing capacity of foundation piles in the construction industry is mainly carried out by two methods: single pile static load test detection and foundation pile high strain detection. Among them, the single...

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Problems solved by technology

[0003] The purpose of the present invention is to improve the problems existing in the high-strain excitation hammer in the past, and to solve the problems of difficulty in lifting when the mass is large, difficulty in ensuring the center of the drop hammer, inconvenient decoupling, and large safety hazards. Useful cranes, inverted chain masts, electric hoists, and winches are used to lift power machinery, solve the impact of the exciting hammer used in high-strain tests on test results, open up new power paths, use hydraulic technology, save energy and protect the environment, and change the lifting to It is recommended to increase the lifting capacity, achieve multiple hammering at one time, reduce the size of the equipment, have a simple structure, reliable transmission, increase the quality of the hammer, shorten the time for lifting the hammer, and realize the automation of detaching from the hook; the second is to change the unfavorable on-site work. In order to reduce the requirements of the detection work on the detection work site space, it is necessary to reduce the work space of the high-strain dynamic detection method and improve the space utilization rate. Aiming at the space utilization problem of the test site, it is proposed to use the top surface of the pile body as the lifting hammer of the high-strain weight hammer The foundation and the pile itself have sufficient bearing capacity, eliminating the need to confirm whether the supporting load is feasible, and moving 90% of the testing work space to the tested pile and pile top, so that the required testing work site can be fully reduced. The working space completely changes the working environment of high-strain testing, and at the same time reduces the preparatory work of the testing work, saves manpower, saves time, reduces testing costs, reduces the burden of the tested unit, and improves work efficiency. Strain pile testing, further expanding the applicability of high-strain testing

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