Multi-function closed cylinder type hydraulic piling hammer

Abstract

The invention relates to a multi-function closed cylinder type hydraulic piling hammer. The technical scheme is as follows: the multi-function closed cylinder type hydraulic piling hammer is mainly formed by connecting an upper hammer body, a middle hammer body, a lower hammer body and a bottom hammer body, wherein, each of the upper hammer body, the middle hammer body and the lower hammer body respectively forms a closed structure; the lower hammer body mainly consists of a hammer cylinder barrel, an upper hammer core, an upper hammer core sealing device and a gas chamber, the hammer cylinder barrel and the upper hammer core form the gas chamber which is positioned at the upper part of the upper hammer core, when the upper hammer core moves downward, the pressure of the gas chamber provides the downward thrust for the hammer core, the hammer cylinder barrel is provided with a lower hammer core, a lower hammer core sealing device and a vacuum chamber therein, and the suction force of the vacuum chamber provides a downward drawing force for the hammer core. The multi-function closed cylinder type hydraulic piling hammer has the benefits that the action force in the same direction of the downward motion is increased at the upper part and the lower part of the upper hammer core, thereby improving the falling acceleration of the hammer core, improving the hitting energy under the premise of not increasing the weight of the hammer body; meanwhile, due to the adoption of the closed cylinder type structure, the working efficiency can not be affected during underwater operation.

Description

1. Technical field: [0001] The invention relates to a building foundation piling construction machine, in particular to a multi-function closed cylinder hydraulic piling hammer. 2. Background technology: [0002] At present, domestic and foreign equipment used for pile foundation construction impact piling is divided into diesel piling hammer and hydraulic piling hammer. Among them, diesel piling hammer has low efficiency, poor fuel economy, large environmental pollution, no explosion-proof performance, and cannot operate underwater. and other shortcomings. At present, hydraulic piling hammers are divided into two types. One is a single-acting hammer that relies on one force of gravity during the fall of the hammer core. The acceleration of gravity that can be achieved is not greater than one acceleration of gravity. In the process, gravity is used and a double-acting impact hammer is attached to the top of the lifting cylinder. The maximum falling acceleration of this type...

AI Technical Summary

Problems solved by technology

[0003] In addition, the hammer cores of the existing hydraulic impact hammers at home and abroad are all in an open state, that is, the hammer core moves in the air. When performing underwater operations, it is necessary to add compressed air in the space where the hammer body moves. Otherwise, due to the resistance of the water, will affect the efficiency of the hammer

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