Quick-change system, adapter and quick coupler

Abstract

A quick-change system for changing attachments on a construction machine using an adapter and a quick coupler connectable to the adapter in which the adapter has at least a first coupling piece and the quick coupler has a second coupling piece connectable to the first coupling piece. A replaceable intermediate piece is arranged on the first coupling piece provided with first electrical contact elements and/or the second coupling piece provided with second electrical contact elements to produce an electrical connection between the first coupling piece and the second coupling piece.

1 . A quick-change system for changing attachments on a construction machine using an adapter and a quick coupler connectable to the adapter, the adapter having at least a first coupling piece and the quick coupler having a second coupling piece connectable to the first coupling piece, wherein a replaceable intermediate piece is arranged on the first coupling piece provided with the first electrical contact elements and/or the second coupling piece provided with the second electrical contact elements to produce an electrical connection between the first coupling piece and the coupling piece. 
     
     
         2 . The quick-change system according to  claim 1 , wherein the intermediate piece is releasably fastened via an interference-free releasable connection in a body of the first coupling piece and/or a body of the second coupling piece. 
     
     
         3 . An adapter for a quick-change system for changing attachments on a construction machine, which contains a support having two coupling elements arranged at a stipulated spacing from each other for connection of the adapter with a quick coupler and at least a first coupling piece arranged on the support for connection with a second coupling piece arranged on the quick coupler, wherein a replaceable intermediate piece is arranged on the first coupling piece provided with first electrical contact elements to produce an electrical connection between the first coupling piece and the second coupling piece. 
     
     
         4 . The adapter according to  claim 3 , wherein the intermediate piece is releasably fastened using an interference-free releasable connection in a body of the first coupling piece. 
     
     
         5 . The adapter according to  claim 3 , wherein the intermediate piece contains on one side first electrical contacts for connection with the first electrical contact elements of the first coupling piece and on the other side second electrical contacts for connection with the second electrical contact elements of the second coupling piece. 
     
     
         6 . The adapter according to  claim 5 , wherein the first electrical contacts of the intermediate piece are designed as pins and the corresponding first electrical contact elements of the first coupling piece are designed as sleeves. 
     
     
         7 . The adapter according to  claim 5 , wherein the second electrical contacts of the intermediate piece are designed as elastic contact pins. 
     
     
         8 . The adapter according to  claim 5 , wherein the intermediate piece contains additional contacts to form an additional contact plane in addition to the first and second electrical contacts. 
     
     
         9 . The adapter according to  claim 5 , wherein at least one of the first, second or additional electrical contacts of the intermediate piece is designed as a grounding contact. 
     
     
         10 . The adapter according to  claim 9 , wherein the grounding contact is designed so that during coupling of the first and second coupling piece, the grounding contact produces an electrical connection before the other contacts. 
     
     
         11 . The adapter according to  claim 3 , wherein a sealing element is arranged in a first annular groove on the outside of the intermediate piece for sealing of the intermediate piece relative to the first coupling piece. 
     
     
         12 . The adapter according to  claim 3 , wherein a seal is arranged in a second annular groove on the outside of an intermediate piece for sealing of the body of the first coupling piece relative to the second coupling piece. 
     
     
         13 . The adapter according to  claim 3 , wherein a positioning element is provided on the intermediate piece for shape-mated engagement with the mating element. 
     
     
         14 . A quick coupler for a quick-change system for changing attachments on a construction machine, containing a support with receptacles for connection with coupling elements of a quick-change adapter with at least a second coupling piece arranged on the support for connection with a first coupling piece arranged on the quick coupler, wherein a replaceable intermediate piece is arranged on the second coupling piece provided with second electrical contact elements to produce an electrical connection between the first coupling piece and the second coupling piece.