External hydraulic power shock excitation equipment for building foundation pile

Abstract

The invention relates to external hydraulic power shock excitation equipment for a building foundation pile, which comprises a support (1), a power shock excitation portion and a lifting hook. The external hydraulic power shock excitation equipment is characterized in that the power shock excitation portion comprises a hydraulic transmission power shock excitation mechanism and a hydraulic pump station, the hydraulic transmission power shock excitation mechanism consists of a hydraulic cylinder assembly and a movable hammer assembly, the lifting hook consists of a lifting hook assembly (9), a lifting hook hydraulic cylinder (10) and a piston rod (26), the external hydraulic power shock excitation equipment is also provided with a shockproof sleeve mechanism (18) and a portal frame (17), the support (1), the portal frame (17) and a hydraulic cylinder support (2) are fixedly connected integrally by the shockproof sleeve mechanism (18) disposed on the periphery of the support (1), and a slide track (20) is disposed on the portal frame (17). The external hydraulic power shock excitation equipment has the advantages that the hydraulic external portal frame structure is utilized, hook separation automation is realized, time and labor are saved, work efficiency is high, and the like.

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 external building foundation piles. Background technique [0002] 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 pile vertical compressive static load test is the main method to determine the vertical compressive bearing capacity of foundation piles. Its test process is relatively intuitive, close to the working state of foundation piles, and is a test method recognized and accepted by the industry. Although...

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Problems solved by technology

Specifically, it is to improve the problems existing in the high-strain excitation hammer in the past. In view of the difficulty in lifting when the mass is large, it is difficult to ensure the center of the falling hammer, it is inconvenient to decouple, and the safety hazard is large. First, the original crane should be changed. Chain gantry, electric hoist, and winch are lifting power machinery to solve the impact of the exciting hammer used in high strain tests on the test results, open up a new power path, use hydraulic technology, save energy and protect the environment, and change the lifting to push and increase the lifting improve the lifting capacity, achieve multiple hammering in one centering, reduce the size of the equipment, have a simple structure, reliable transmission, increase the mass of the hammer, shorten the time of lifting the hammer, and realize the automation of detaching from the hook; In order to meet the space requirements of the testing work site, it is necessary to reduce the working space of the high-strain dynamic testing method and improve the space utilization rate. In view of the space utilization of the test site, it is proposed to use the top surface of the pile body as the foundation of the high-strain weight hammer, and the pile itself There is 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 piles and pile tops, so that the working space required for the testing work site can be fully reduced, completely Change the working environment of high-strain testing, and at the same time reduce the preparatory work for testing, save manpower, save time, reduce testing costs, reduce the burden on the inspected unit, improve work efficiency, and achieve high-strain pile foundation tests in various site conditions , which further expands the applicability of high-strain detection

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