Trench wall device and method for creating a trench in the ground

Abstract

The invention relates to a diaphragm wall device for creating a trench in the ground, comprising a base frame which extends in a longitudinal direction, at least one soil removal device which is arranged on a lower end region of the base frame, a holding device for holding the diaphragm wall device on an upper end region, a bracing device with at least two opposite bracing elements displaceable laterally, transversely to the longitudinal direction, and at least one actuating element, by way of which the tensioning elements can be extended laterally in the trench for bracing at least a part of the diaphragm wall device, an intermediate frame which is mounted displaceably along the base frame at a lower area of the base frame and on which the bracing device with the at least two bracing elements and the at least one actuating element is arranged, and a pressing-on device, by means of which a at least one soil removal device can be applied with a pressure force, wherein the pressing-on device is arranged between the intermediate frame and the base frame. According to the invention, the holding device is fixedly connected with the intermediate frame and the base frame with the soil removal device is displaceable with respect to the holding device.

1 . A diaphragm wall device for creating a trench in the ground, comprising
 a base frame which extends in a longitudinal direction,   at least one soil removal device, which is arranged on a lower end region of the base frame,   a holding device for holding the diaphragm wall device on its upper region,   a bracing device with at least two opposite bracing elements displaceable laterally, transversely to the longitudinal direction and with at least one actuating element, by means of which the bracing elements can be extended laterally in the trench for bracing at least a part of the diaphragm wall device,   an intermediate frame, on which the bracing device with the at least two bracing elements and the at least one actuating element is arranged, and   a pressing-on device, by means of which the at least one soil removal device can be applied with a pressure force,   wherein the pressing-on device is arranged between the intermediate frame and the base frame, so that the base frame is displaceable relative to the intermediate frame by means of the pressing-on device,   wherein the holding device is fixedly connected with the intermediate frame, and   wherein the base frame with the soil removal device is displaceable with respect to the holding device,   
       wherein
 the intermediate frame is displaceably mounted in a lower region of the base frame along the base frame and 
 the holding device is fixedly connected to the intermediate frame via one or multiple longitudinal beams, which extend along the base frame. 
 
     
     
         2 . The diaphragm wall device according to  claim 1 , 
       wherein
 the holding device is attached to a crossbeam which is arranged in an upper region of the base frame and 
 a linear guide is arranged in the region of the crossbeam, by means of which the base frame is displaceably guided with respect to the holding device. 
 
     
     
         3 . The diaphragm wall device according to  claim 1 , 
       wherein
 the bracing device comprises at least two actuating elements arranged perpendicularly to the longitudinal direction, wherein at least one first actuating element is mounted on the intermediate frame on the one side and, on the other side, is mounted on a first bracing element and at least one second bracing element is mounted on the intermediate frame on the one hand and is mounted on a second bracing element arranged opposite the first bracing element on the other hand, and 
 the first actuating element and the second actuating element are extendable perpendicular to the longitudinal direction. 
 
     
     
         4 . The diaphragm wall device according to  claim 1 ,
 wherein   the intermediate frame is displaceably mounted on the base frame in a lower region on a mounting portion, which has a reduced cross-section with respect to the base frame, while forming at least one free space.   
     
     
         5 . The diaphragm wall device according to  claim 4 ,
 wherein   two lateral free spaces are formed on the mounting portion and two receptacles for actuating elements are accordingly formed on the intermediate frame.   
     
     
         6 . The diaphragm wall device according to  claim 5 ,
 wherein   the at least one receptacle on the intermediate frame is of box-type design and comprises at least one first actuating element and at least one second actuating element.   
     
     
         7 . The diaphragm wall device according to  claim 1 ,
 wherein   a controller is provided, by means of which the first actuating elements and the second actuating elements can be extended in a defined manner.   
     
     
         8 . The diaphragm wall device according to  claim 1 ,
 wherein   the pressing-on device is arranged above the bracing device and comprises one, preferably multiple pressing-on cylinders.   
     
     
         9 . The diaphragm wall device according to  claim 8 ,
 wherein   each pressing-on cylinder is attached on the base frame on the one side and on the intermediate frame or on a bracing element on the other side.   
     
     
         10 . The diaphragm wall device according to  claim 8 ,
 wherein   the pressing-on cylinders are arranged inclined to the vertical, wherein the base frame with the soil-removal device can be pressed downwards relative to the braced intermediate frame by actuating pressing-on cylinders.   
     
     
         11 . The diaphragm wall device according to  claim 1 ,
 wherein   the device is configured as a diaphragm wall cutter, wherein the soil removal device comprises at least one cutting wheel.   
     
     
         12 . The diaphragm wall device according to  claim 1 ,
 wherein   the device is configured as a diaphragm wall grab, wherein the soil removal device comprises grabber blades.   
     
     
         13 . A method for creating a trench in the ground using a diaphragm wall device according to  claim 1 , 
       wherein
 the diaphragm wall device is held on an upper end region by means of a holding device, 
 soil is removed by means of at least one soil removal device, which is arranged on a lower end region of the base frame, while creating a trench, 
 by means of a bracing device at least two opposite bracing elements are extended laterally by means of at least two actuating elements oriented perpendicularly to the longitudinal direction, wherein at least a part of the diaphragm wall device is braced in the trench, 
 the at least one soil removal device is applied with a pressing-on force by means of a pressing-on device, 
 the bracing device having the at least two bracing elements and the actuating elements is arranged on an intermediate frame, on which the holding device is attached, and the base frame is mounted displaceably with respect to the intermediate frame and the holding device, 
 the intermediate frame is braced and secured with respect to the ground by the bracing device and 
 the base frame with the soil removal device is pressed downwards and is displaced relative to the intermediate frame and the holding device by means of the pressing-on device.