Hydraulic vibratory hammer device and vibration excitation method thereof

Abstract

The invention discloses a hydraulic vibratory hammer device and a vibration excitation method thereof and belongs to the field of pile driving machinery. The device comprises a vibration damping beam, a clamp and an eccentric rotary vibration exciter, wherein the eccentric rotary vibration exciter is provided with only one eccentric rotation system, i.e. an eccentric block is driven to rotate by a motor or electric machine so as to generate vibration. During pile vibrosinking, the device is required for being used in pairs, two same vibratory hammer devices are mounted symmetrically, the synchronization of two eccentric rotary vibration exciters is realized according to a self-synchronization theory, force components in the horizontal direction cancel each other out, force components in the vertical direction are superimposed on each other, and an exciting force acting on a pile is equivalent to the exciting force generated by the traditional vibratory hammer which is mounted at an axis position of the pile. The hydraulic vibratory hammer device is simple in structure and convenient in maintenance and is not restricted to the specifications of the pile, and the service life of a vibratory hammer is remarkably prolonged as synchronizing gears are canceled.

Description

technical field [0001] The invention relates to a vibratory hammer device in the field of pile machinery, in particular to a hydraulic vibratory hammer device, and also relates to a vibration excitation method of the hydraulic vibratory hammer device. Background technique [0002] Vibratory hammer is a kind of pile machinery that uses eccentric block to generate exciting force, forces pile soil to vibrate, and liquefies sand and soil to realize easy pile sinking. Because of its small environmental vibration, low noise, little damage to prefabricated piles during the pile sinking process, light weight of the machine, low cost and high efficiency, it is widely used in the construction of housing, railways, bridges and other foundation projects. [0003] When vibratory hammers are used for the sinking of large-diameter cylindrical piles, multiple 2-axis or 4-axis vibratory hammers are usually used to act on a cylindrical pile at the same time. Internal force, this internal for...

AI Technical Summary

Problems solved by technology

The second is that the four vibratory hammers currently use a synchronous gearbox to ensure the forced synchronization of the four vibratory hammers.

[0004] Although it can meet the requirements of synchronization, it has the following disadvantages: ①The structure is too complicated; ②The inner gear of the vibratory hammer and the planetary gear and crown gear between the hammer and the hammer are easily damaged, and the life of the vibratory hammer is not high; ③It is difficult to maintain; ④For Cylinders with different diameters need to use different synchronization devices, which requires a large investment in manpower and financial resources

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