Material-receiving device for a suction excavator, and suction excavator having said material-receiving device

Abstract

A material-receiving device for a suction excavator has an articulated tube support and a suction tube. A first, proximal end of the articulated tube support is attachable to the suction excavator by a rotationally movable fastening mount. At a second distal end, the articulated tube support comprises a suction connecting piece connected to the suction tube. The articulated tube support comprises n≥3 links, between each of which a hinge joint with an associated drive is formed. All the hinge joints have the same degree of freedom, so that the links are pivotable in a common plane. A rotary joint is located between the last, distal hinge joint, on which the suction connecting piece is located, and the first hinge joint. The rotary joint has a different degree of freedom than the hinge joints, so that the link disposed subsequently to the rotary joint can be moved out of the plane.

1 . A material-receiving device having an articulated tube support and a suction tube for a suction excavator, the articulated tube support having a rotationally movable fastening mount at a first, proximal end and a suction connecting piece connected to the suction tube at a second, distal end, and the articulated tube support having a number n≥3 of links-Q between each of which a hinge joint with an associated drive is formed, all the hinge joints-having the same degree of freedom, so that the links are pivotable in a common plane wherein the material-receiving device further comprises a rotary joint, which has a continuous receiving opening along its rotation axis having a cross section larger than the cross section of the suction tube, the rotary joint being disposed at a position between the last, distal hinge joint farthest away from the fastening mount and the first hinge joint closest to the rotationally movable fastening mount, the rotary joint having a different degree of freedom than the hinge joints so that the link disposed distally subsequently to the rotary joint can be moved out of the plane, the suction tube being guided through the receiving opening of the rotary joint, so that the rotary joint is disposed coaxially with the suction tube. 
     
     
         2 . The material-receiving device according to  claim 1 , wherein at the number of links is n>4. 
     
     
         3 . The material-receiving device according to  claim 1 , wherein the rotary joint is disposed between the two hinge joints farthest away from the proximal end of the articulated tube support. 
     
     
         4 . The material-receiving device according to  claim 1 , wherein the rotary joint has a fluidic or electric drive. 
     
     
         5 . The material-receiving device according to  claim 1 , wherein the rotationally movable fastening mount is a further rotary joint or a pivot joint, it being possible to attach the fastening mount to the suction excavator. 
     
     
         6 . The material-receiving device according to  claim 1 , wherein a rotatable tube coupling is installed in the rotary joint. 
     
     
         7 . The material-receiving device according to  claim 6 , wherein the suction tube, in the case of a rotatable tube coupling, consists of two parts, the first part of the suction tube being bendable and the second part of the suction tube being bendable and twistable. 
     
     
         8 . The material-receiving device according to  claim 1 , wherein the rotary joint comprises at least two tubes and one deflection roller for each tube. 
     
     
         9 . The material-receiving device according to  claim 8 , wherein the deflection rollers, which interact in a counter-rotating manner, are coupled to one another via a spring element. 
     
     
         10 . A suction excavator having a material-receiving device having an articulated tube support and a suction tube according to  claim 1 , further comprising a material-collecting container. 
     
     
         11 . The suction excavator according to  claim 10 , wherein the suction tube is rotatably disposed on the material-collecting container of the suction excavator.