Combined hammer head for hydraulic pile hammer

Abstract

The invention discloses a combined hammer head for a hydraulic pile hammer. The combined hammer head is applied to a pile hammer hammering system of the hydraulic pile hammer in a pile basis construction. The hammer head comprises a hammer body with a hollow interior; a striking head is arranged at the bottom of the hammer body; an oil cylinder piston rod is connected with the top of the hammer body; a metal grain filler is filled in the hollow cavity of the hammer body; the hammer body is formed by stacking and connecting a plurality of metal plates; a lower plate at the bottom and an upper plate at the top are closed; a plurality of middle plates in the middle are arranged as frame-shaped hollow plates; after the frame-shaped hollow plates are stacked, the hollow cavity in the hammer body is formed. According to the invention, the stress waveform during a striking process of the hammer head is effectively improved, the peak of the stress waveform is reduced to the lowest required value and the transferring time of the stress waveform under a peak state is prolonged, the transferring efficiency of the strike energy and the piling speed are increased while the impact force endured by the pile hammer and the pile is reduced, the service life of the pile hammer is prolonged and the pile is protected from being damaged.

Description

technical field [0001] The invention belongs to the field of pile machinery, and relates to a combined hammer head for a hydraulic piling hammer with a metal particle filler inside, which is mainly used in the pile hammer hammering system of the hydraulic piling hammer in pile foundation construction. Background technique [0002] The hydraulic piling hammer is a new type of engineering machinery developed to overcome the noise and pollution of the diesel hammer. It is widely used in the construction of pile foundations in bridges, industries, and buildings. In the pile hammer hammering system, the hammer head reciprocates up and down, strikes the hammer pad, and transmits the impact force to the pile. [0003] The structure of the pile hammer hammering system of the hydraulic pile hammer is as follows: figure 1 As shown, it is mainly composed of hammer pad 1, hammer head 2, oil cylinder piston rod 3, pile pad 4, pile 5 and other parts. The hammer head 2 moves back and for...

AI Technical Summary

Problems solved by technology

[0005] The technical problem solved by the present invention is: aiming at the defect that the hammer head of the existing hydraulic piling hammer is easy to damage the pile, it provides a combined hammer head for a hydraulic piling hammer with a built-in metal particle filler. During the compaction process, the gravitational potential energy of the hammer head is gradually transmitted to the impacted hammer pad during the compaction period. This compaction process time greatly reduces the impact stress wave and prolongs the action time. Such a stress waveform is The most ideal waveform of the shock wave, high transmission efficiency without damaging the driven pile

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