Trench cutter

Abstract

The disclosure relates to a trench cutter with at least one milling wheel that is rotatably mounted on a bearing plate and has at least one adjustable cutting tool for crushing soil material, wherein the adjustable cutting tool comprises a base body that is movably mounted on the milling wheel and interacts with the bearing plate in such a way that the adjustable cutting tool moves automatically between a folded-in position and a folded-out position as a function of the angle of rotation when the milling wheel is rotated. The adjustable cutting tool can be moved from the folded-out position into the folded-in position via a first guide element that contacts the bearing plate. According to the disclosure, the first guide element is formed integrally with the base body and projects from the base body in the direction of the bearing plate on a side facing the bearing plate.

1 . Trench cutter with at least one milling wheel that is rotatably mounted on a bearing plate and has at least one adjustable cutting tool for crushing soil material, wherein the adjustable cutting tool comprises a base body that is movably mounted on the milling wheel and interacts with the bearing plate in such a way that the adjustable cutting tool moves automatically between a folded-in position and a folded-out position as a function of the angle of rotation when the milling wheel is rotated, wherein the adjustable cutting tool can be moved from the folded-out position into the folded-in position via a first guide element that contacts the bearing plate,
 wherein   the first guide element is formed integrally with the base body and projects from the base body in the direction of the bearing plate on a side facing the bearing plate.   
     
     
         2 . Trench cutter according to  claim 1 , wherein the adjustable cutting tool is designed such that in the folded-in position it is axially spaced apart from the bearing plate and can be moved past it and in the folded-out position it projects into a region radially adjacent to the bearing plate. 
     
     
         3 . Trench cutter according to  claim 1 , wherein the adjustable cutting tool is pivotably mounted on the milling wheel. 
     
     
         4 . Trench cutter according to  claim 1 , wherein the base body has a chamfer, which extends at least partially onto the first guide element and is located on a front edge of the base body in the direction of rotation during milling operation. 
     
     
         5 . Trench cutter according to  claim 1 , wherein the base body has a holder for a replaceable milling tooth and the first guide element is arranged in front of the holder in the direction of rotation during milling operation, wherein the holder comprises a recess extending in the direction of a pivot axis of the base body. 
     
     
         6 . Trench cutter according to  claim 1 , wherein the first guide element is arranged on a front portion of the base body in the direction of rotation during milling operation. 
     
     
         7 . Trench cutter according to  claim 1 , wherein only one first guide element is provided for moving the adjustable cutting tool from the folded-out position into the folded-in position. 
     
     
         8 . Trench cutter according to  claim 1 , wherein the first guide element comprises a flat portion pointing towards the bearing plate in the folded-in position, which adjoins a chamfer of the base body. 
     
     
         9 . Trench cutter according to  claim 1 , wherein the adjustable cutting tool comprises a second guide element, which is designed such that the adjustable cutting tool can be moved from the folded-in position to the folded-out position by contacting the bearing plate, wherein the second guide element is spaced apart from the first guide element in the radial direction and is arranged on a side of a pivot axis of the base body opposite the first guide element. 
     
     
         10 . Trench cutter according to  claim 1 , wherein a control guide is provided on the bearing plate, which interacts with the adjustable cutting tool such that it moves automatically between the folded-in position and the folded-out position when the milling wheel is rotated, depending on the angle of rotation. 
     
     
         11 . Trench cutter according to  claim 10 , wherein the control guide comprises a control bar arranged on the bearing plate, which extends in a first angular range around the axis of rotation of the milling wheel and is designed in such a way that the adjustable cutting tool moves from the folded-in position into the folded-out position by contacting the control bar, wherein the control bar has a chamfer that slopes down towards the bearing plate at at least one end at both ends. 
     
     
         12 . Trench cutter according to  claim 10 , wherein the control guide comprises a control surface or a second control bar, which extends in a second angular range around the axis of rotation of the milling wheel and is designed such that the adjustable cutting tool moves from the folded-out position into the folded-in position by contacting the control surface or second control bar through the first guide element. 
     
     
         13 . Trench cutter according to  claim 1 , wherein a milling wheel is arranged on opposite sides of the bearing plate, wherein the milling wheels are coaxially mounted and each have at least one adjustable cutting tool, wherein the trench cutter has two bearing plates, each having a pair of milling wheels. 
     
     
         14 . Adjustable cutting tool a hinged tooth, for a trench cutter according to  claim 1 . 
     
     
         15 . Carrier device having a trench cutter according to  claim 1 . 
     
     
         16 . Carrier device of  claim 15 , wherein the carrier device is a cable excavator.