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Pile driver with air pressure buffer

a technology of buffer and pile, applied in the direction of bulkhead/pile, construction, foundation engineering, etc., can solve the problems of waste of energy and large quantity of heat, and achieve the effect of avoiding waste of energy and producing hea

Inactive Publication Date: 2013-08-08
GUO DAVID WEI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

The present invention is a new version of a liquid propellant pile driver that uses air pressure buffer instead of liquid buffer to avoid wasting energy and produce faster piling. The piling principle is changed from plastic impact to elastic impact, which results in faster piling and reduced energy consumption. The compressed gas spring is used to store energy and push the rebound part up again to reserve energy for the next piling. This results in a more elastic impact, reducing energy loss and heat production. The invention also allows for multi hits by one ignition.

Problems solved by technology

However, the inadequacy is that: a great quantity of heat is produced and the energy is wasted.

Method used

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  • Pile driver with air pressure buffer
  • Pile driver with air pressure buffer

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Embodiment Construction

Brief Description of the Drawing

[0009]FIG. 1 is the overall drawing of the liquid propellant pile driver and the pile, used to indicate the location of the pile driver buffer.

[0010]FIG. 2 is the section view of the buffer and related parts in an embodiment.

[0011]In the drawing: 1. pile, 2. pile cap, 3. buffer piston, 4. buffer cylinder, 5. vessel, 6. liquid, 7. piston lever, 8. compressed gas, 9. anti-collision opening cylinder.

DESCRIPTION OF A PREFERRED EMBODIMENT

[0012]The piston lever 7, the pile cap 2 and the pile 1 in the low part of the liquid propellant pile driver are connected together and are supported by the soil underneath. The rest parts of the pile driver belong to the rebound part.

[0013]FIG. 2 shows the various parts of the buffer at the stationary equilibrium position. The compressed gas 8 in the vessel 5 push the buffer piston 3 to the low dead end. The weight of the rebound part passes to the pile cap 2 and the pile 1 through the surface of the anti-collision openin...

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PUM

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Abstract

A pile driver with an air pressure buffer comprises a pile following moving part, a rebound part, and an air pressure buffer. The pile following moving part comprises a pile cap (2) contacting the pile (1) and a piston lever (7), and the rebound part is the other part except the moving part. An air pressure buffer provided between the moving part and the rebound part is composed of a buffer piston (3), a buffer cylinder (4) and a vessel (5). The buffer cylinder (4) and the vessel (5) are intercommunicated with each other. Compressed gas (8) is filled in the vessel (5). The buffer piston (3) can slide in the buffer cylinder (4). The pile driver can save energy and accelerate the frequency of driving pile.

Description

FIELD OF THE INVENTION[0001]The present invention relates to a liquid propellant pile driver's design and improves the piling principle and the structure of the pile driver buffer.DESCRIPTION OF THE RELATED ART[0002]The present invention is the improvement of the original invention “Liquid Propellant Pile Driver” (Application No.: CN87108193.8; Pub. No.: CN1033532). The original invention introduced a new kind of pile driver that uses liquid propellants as its piling energy. The liquid propellants combust in the combustion chamber and produce forces to push the pile into the ground through a piston lever and generate the first piling. A liquid buffer is used for absorbing the falling energy of the rebound part and producing piling force and forming the second piling. However, the inadequacy is that: a great quantity of heat is produced and the energy is wasted.SUMMARY OF THE INVENTION[0003]The purpose of this invention is to overcome the inadequacy of the original invention “Liquid ...

Claims

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Application Information

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Patent Type & Authority Applications(United States)
IPC IPC(8): E02D7/10
CPCE02D7/10
Inventor GUO, DAVID WEIJIANG, XIGUO, XINSHENG
Owner GUO DAVID WEI