Pile-driver and method for application thereof

Abstract

A pile-driver is disclosed. The pile driver comprising a support member arranged in a transverse direction at or on a pile; a liquid chamber bounded on the underside by the support member and which further comprises one or more side walls and is configured to receive a liquid therein; one or more pressure build-up chambers, comprising: an upper part forming a combustion space; a lower part in fluid connection with the liquid chamber; an ignition mechanism configured to ignite a fuel present in the combustion space; and a fuel supply channel for carrying fuel into the combustion space; and a combustion product discharge channel for discharging combustion products after combustion; wherein the one or more pressure build-up chambers are arranged close to the side wall of the liquid chamber; and wherein the combustion product discharge channel is in fluid connection with a passage opening arranged in the side wall.

1 . A pile-driver, comprising:
 a support member arranged or arrangeable in transverse direction at or on a pile;   a liquid chamber which is bounded on the underside by the support member and which further comprises one or more side walls, the liquid chamber being configured to receive a liquid therein;   one or more pressure build-up chambers, comprising:
 an upper part forming a combustion space; 
 a lower part which is in fluid connection with the liquid chamber; 
   an ignition mechanism configured to ignite a fuel present in the combustion space; and   wherein the combustion space is configured to expand fuel present therein during combustion such that a pressure build-up takes place above the support member and the liquid present above the support member in the liquid chamber is displaced at least in upward direction away from the support member, and a downward force is exerted on the pile via the support member;   a fuel supply channel for carrying fuel into the combustion space;   a combustion product discharge channel for discharging combustion products after combustion;   characterized in that   the one or more pressure build-up chambers are arranged close to the one or more side walls of the liquid chamber; and   the combustion product discharge channel is in fluid connection with a passage opening arranged in the one or more side walls.   
     
     
         2 . The pile-driver as claimed in  claim 1 , wherein the one or more pressure build-up chambers are formed by one or more plate parts extending inward from the one or more side walls into the liquid chamber. 
     
     
         3 . The pile-driver as claimed in  claim 2 , wherein the one or more plate parts extend in the direction of the support member. 
     
     
         4 . The pile-driver as claimed in  claim 2 , wherein the liquid chamber has in top view a substantially round cross-section and the one or more pressure build-up chambers are formed by an annular plate part arranged around an inner periphery of the one or more side walls. 
     
     
         5 . The pile-driver as claimed in  claim 2 , wherein the passage opening is arranged between the plate part and the support member. 
     
     
         6 . The pile-driver as claimed in  claim 1 , wherein the combustion product discharge channel is provided with a shut-off valve which can be operated selectively by a controller. 
     
     
         7 . The pile-driver as claimed in  claim 1 , wherein the one or more side walls of the liquid chamber separate the liquid from the surrounding area. 
     
     
         8 . The pile-driver as claimed in  claim 1 , wherein the liquid present in the liquid chamber above the support member is water. 
     
     
         9 . The pile-driver as claimed in  claim 1 , wherein the pile-driver is integrated into the pile, which forms with its side wall a side wall of the liquid chamber.