Pile cap of pile hammer and method for adapting to and adjusting diameter of pile cap of pile hammer

Abstract

The invention discloses a method for adapting to and adjusting the diameter of a pile cap of a pile hammer. The method comprises the following steps of determining the pile diameter, adjusting the inner diameter of a lower pile cap body, installing the pile cap of the pile hammer and installing a cement pile. According to the method, the diameter of an inner cavity of the lower pile cap body is adjusted by movably adjusting the radial distance between each adjusting block and the central axis of the pile cap so as to adapt to the construction of cement prefabricated piles with different diameter specifications; and besides, a pile head buffer piece and a pile head base plate are arranged at the bottom of the inner cavity of the lower pile cap body, so that a pile head is prevented from being damaged, the problems of an existing cement pile cap can be effectively reduced, the operation is simple, the maintenance cost is low, and the safety of pile foundation construction is improved. The invention also discloses a pile hammer pile cap for implementing the method. The pile cap realizes the adjustment of the diameter of the inner cavity of the lower pile cap body through the radial movable adjustment of each adjusting block and each adjusting support frame circumferentially arranged on the outer side surface of a lower cylinder body, and has the advantages of safe and fast pile diameter adjustment, wide pile type application range and high construction efficiency.

Description

technical field [0001] The invention relates to the technical field of pile foundation construction equipment, in particular to a pile cap of a pile driving hammer and a diameter adaptation adjustment method thereof. Background technique [0002] In the construction of cement prefabricated piles in the existing pile foundation construction, during the working process of the pile driver, the cement prefabricated piles of different specifications need to be matched with the corresponding piling hammer pile caps, and the pile driving hammer pile caps are expensive and cumbersome to replace, which affects the construction efficiency , and it is necessary to work directly under the pile hammer during replacement, and the risk is relatively high. [0003] In the prior art, our company researched and disclosed a hydraulic piling hammer with an improved structure [Application No.: CN03274785.3] earlier, the pile cap of the piling hammer is composed of an integral structure, and is a...

AI Technical Summary

Problems solved by technology

[0002] In the construction of cement prefabricated piles in the existing pile foundation construction, during the working process of the pile driver, the cement prefabricated piles of different specifications need to be matched with the corresponding piling hammer pile caps, and the pile driving hammer pile caps are expensive and cumbersome to replace, which affects the construction efficiency , and it needs to be operated directly under the pile hammer during replacement, the risk is high

[0003] In the prior art, our company researched and disclosed a hydraulic piling hammer with an improved structure [Application No.: CN03274785.3] earlier, the pile cap of the piling hammer is composed of an integral structure, and is aimed at cement prefabricated piles of different specifications Construction can only replace the pile cap of the corresponding pile hammer. In addition, the inner cavity of the pile cap of the pile hammer is not provided with a pile head buffer. Therefore, during the construction process, paper or wood should be placed between the pile head and the pile cap anvil. As a buffer to prevent damage to the pile head, the paper or wood board needs to be matched according to the size of the pile, which is frequently replaced, cumbersome to install, and easy to be damaged. It needs to be operated directly under the pile hammer during installation, and the risk is high

Images