Design, production and use of a new type of free-fall hammer

A free-falling and free-flowing technology, which is applied to foundation pile detection of highway and bridge engineering, port engineering, and construction engineering, can solve the problems of increased detection cost, time-consuming and laborious, etc.

Inactive Publication Date: 2011-11-30
CCCC FOURTH HARBOR ENG INST +3
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, this traditional testing device needs to set up a special working platform and mobilize piling ships, so it is time-consuming and laborious, and the testing cost also increases accordingly

Method used

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  • Design, production and use of a new type of free-fall hammer
  • Design, production and use of a new type of free-fall hammer
  • Design, production and use of a new type of free-fall hammer

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0020] Attached below Figure 1-3 The present invention is further described in detail.

[0021] A new type of free-fall hammer for foundation pile dynamic tests, including a sleeve 1 and a hammer 6; the sleeve 1 is placed on the top of the test pile 2, so that the sleeve partition 3 presses the top of the test pile, and the lower part of the sleeve 1 is close to the top of the test pile. Test the pile body to ensure the verticality and stability of the sleeve 1; the upper part of the sleeve partition 3 is provided with a hammer pad 4, and the pile pad 5 is provided between the lower part of the sleeve partition 3 and the top of the test pile 2. Hammer 6 is placed on the inside of sleeve 1, with the top of sleeve 1 as the guide device when hammer 6 falls, to keep smooth and safe when falling. The sleeve 1 can be a steel pipe with a steel dividing plate welded in the middle. Hammer pad 4 is prepared by steel wire rope and wooden beam. The pile mat 5 is prepared from planks. ...

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PUM

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Abstract

The invention relates to a free fall hammer for a foundation pile power test. The free fall hammer comprises a hammer and a sleeve, wherein the sleeve is placed on the test pile top, so that a sleeve partition board is pressed on the pile top, the lower part of the sleeve clings to the test pile, and the sleeve is vertical and stable; the hammer is placed into the sleeve and the upper part of thesleeve serves as a guide device when the hammer falls down, so that success and safety are maintained when the hammer falls down; the sleeve adopts a steel pipe; a steel partition board is welded in the middle of the sleeve; a hammer pad is arranged on the upper part of the sleeve partition board; a pile pad is arranged between the lower part of the sleeve partition board and the test pile top, so that impact of the hammer is reduced; and a main hook of a crane can hoist the hammer to the preset height and a secondary hook of the crane pulls a tripping device, so that the hammer falls freely and strikes the test pile.

Description

technical field [0001] The invention relates to a novel free-fall hammer for dynamic testing of foundation piles, which belongs to the field of pile detection in construction engineering, port engineering, highway and bridge engineering. Background technique [0002] At present, when performing dynamic tests on pile foundations on water, it is usually necessary to mobilize a piling ship, and the piling ship is usually equipped with a diesel hammer or a hydraulic hammer. When the piling ship is not on site or its deployment cost is high, a free fall hammer is required, if attached figure 1 shown. The free-fall hammer test pile that is often used at present needs to set up a test pile platform 14 at first, and the platform is placed on the auxiliary pile 13. The device 10 makes the hammer fall, and the hammer falls freely and hits the pile top. [0003] However, this traditional testing device needs to set up a special working platform and mobilize piling ships, so it is ti...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E02D7/08E02D33/00
Inventor 刘永锋鲍树峰张军清
Owner CCCC FOURTH HARBOR ENG INST
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