Apparatus and method for securing an underground construction element on an underground construction machine

Abstract

An apparatus for securing an underground construction element on an underground construction machine, in particular a pile element on a pile-driving apparatus, includes a lifting tackle, in particular a sling chain, which is affixed to the underground construction machine with a first end, and the second end of which has a first connection part that can be passed through a passage of the underground construction element, wherein a securing device, in particular at least one securing chain, is connected, with a first end, to the underground construction element, and the second end of which is affixed to the underground construction machine by way of an energy absorber, and wherein the length of the securing device is selected in such a manner that the device forms a loop when the lifting tackle is intact. Furthermore, an underground construction method uses such an apparatus.

What is claimed is: 
     
         1 . An apparatus for securing an underground construction element on an underground construction machine, comprising:
 a lifting tackle ( 6 ) affixed to the underground construction machine with a first lifting tackle end, and a second lifting tackle end of the listing tackle has a first connection part configured to pass through a passage ( 91 ) of the underground construction element ( 9 ), and   a securing device ( 8 ) connected to the underground construction element ( 9 ) with a first securing device end, and a second securing device end of the securing device is affixed to the underground construction machine by way of an energy absorber ( 7 ), wherein the securing device ( 8 ) has a length selected in such a manner that the securing device forms a loop when the lifting tackle ( 6 ) is intact.   
     
     
         2 . The apparatus according to  claim 1 , wherein the underground construction element on the underground construction machine is a pile element in a pile-driving machine, the lifting tackle is a sling chain, and the securing device comprises at least one securing chain. 
     
     
         3 . The apparatus according to  claim 1 , wherein the energy absorber ( 7 ) is formed by a crash absorber. 
     
     
         4 . The apparatus according to  claim 1 , wherein the energy absorber ( 7 ) is configured as a friction buffer. 
     
     
         5 . The apparatus according to  claim 1 , wherein the energy absorber ( 7 ) is configured as a spring having a friction buffer. 
     
     
         6 . The apparatus according to  claim 5 , wherein the spring is an annular spring. 
     
     
         7 . The apparatus according to  claim 1 , wherein the energy absorber ( 7 ) is designed for tension stress. 
     
     
         8 . The apparatus according to  claim 1 , wherein the energy absorber ( 7 ) is connected to a draw piece ( 72 ) that is displaceable in a guide ( 74 ) and that has a second connection device ( 73 ), wherein the securing device ( 8 ) has a second connection part ( 81 ) on the first securing device end, releasably connected to the second connection device ( 73 ). 
     
     
         9 . The apparatus according to  claim 8 , wherein the guide is a linear guide arranged on the construction machine. 
     
     
         10 . The apparatus according to  claim 1 , wherein the securing device ( 8 ) is passed through a passage ( 92 ) provided on the underground construction element and has a stop plate ( 82 ) at the first securing device end having a width greater than a width of the passage ( 92 ) against which the stop plate lies. 
     
     
         11 . The apparatus according to  claim 10 , wherein the stop plate covers the passage completely. 
     
     
         12 . An underground construction machine comprising the apparatus according to  claim 1 . 
     
     
         13 . The underground construction machine according to  claim 12 , comprising a pile-driving apparatus that has a pile-driving mechanism ( 4 ) displaceable along a leader ( 2 ), by way of a carriage ( 3 ), wherein an energy absorber ( 7 ) is arranged on the pile-driving mechanism ( 4 ) or the carriage ( 3 ) having a second connection device ( 73 ) releaseably connected to the second connection part ( 81 ) of the securing device ( 8 ). 
     
     
         14 . The underground construction machine according to  claim 13 , wherein the energy absorber ( 7 ) is connected to a draw piece ( 72 ) displaceable in a linear guide ( 74 ) arranged on the construction machine, wherein the second connection device ( 73 ) is arranged on the draw piece. 
     
     
         15 . The underground construction machine according to  claim 12 , further comprising clamping tongs ( 5 ) to hold a pile element ( 9 ) in a clamped manner. 
     
     
         16 . An underground construction method comprising:
 (a) attaching an underground construction element to an underground construction machine using a lifting tackle having first and second lifting tackle ends, the second lifting tackle end having a first connection part;   (b) affixing the first lifting tackle end to the underground construction machine and passing the first connection part through a passage of the underground construction element;   (c) releaseably connecting the first connection part to a first connection apparatus of the underground construction machine so as to secure a position of the underground connection element; and   (d) connecting a first securing device end of a securing device to the underground construction element and affixing a second securing device end of the securing device to the underground construction machine by way of an energy absorber;   wherein the securing device has a length selected so that the securing device forms a loop when the lifting tackle is intact.   
     
     
         17 . The underground construction method according to  claim 16 , wherein the energy absorber ( 7 ) affixed to the underground construction machine has a draw piece ( 72 ) having a second connection device ( 73 ), and the securing device ( 8 ) has a second connection part ( 82 ) at the second securing device end, wherein the second connection part ( 82 ) is releasably connected to the second connection device ( 73 ) of the draw piece.