Combined hammer head for hydraulic pile hammer

A combined hammer and hydraulic technology, which is applied to sheet pile walls, buildings, foundation structure engineering, etc., can solve the problem of easily breaking piles

CN104404959AActive Publication Date: 2015-03-11CENT SOUTH UNIV +1
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
Publication Date
2015-03-11

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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.
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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...

Examples

Embodiment Construction

[0026] see in conjunction figure 2 and image 3 , a combined hammer head 2 for a hydraulic piling hammer with a built-in metal particle filler consists of an impact head 6, a lower plate 7, a middle plate 8, a positioning pin 9, a metal particle filler 10, a bottom cushion 11, an upper plate 12, a top Cushion pad 13, bolt 14, thick nut 15, thin nut 16, pressure plate 17 and oil cylinder connecting seat 18 etc. parts are formed. Wherein, the hammer body of the hammer head 2 is formed by the impact head 6, the lower plate 7, the middle plate 8, the upper plate 12, and the pressure plate 17, which are positioned by the positioning pin 9 and connected with the bolt 14. The bottom of the bolt 14 is screwed on the impact head 6. On the screw hole, the hammer body is locked into a whole by thick nut 15 and thin nut 16 at the top, and filler 10 is filled in the hollow cavity of the hammer body surrounded by the middle plate 8, and is sealed by the lower plate 7 and the upper plate 1...