Locking arrangement for a construction machine

Abstract

An arrangement for a construction machine includes a machine frame; and an articulated boom. The articulated boom is arranged on the machine frame. The articulated boom includes a proximal arm that is mounted in an articulated manner to the machine frame and a distal arm that is connected in an articulated manner to the proximal arm. The arrangement is configured to be operated in an operational mode, in which the proximal arm and the machine frame are interlocked.

What is claimed is: 
     
         1 . An arrangement for a construction machine, comprising
 a machine frame; and   an articulated boom being arranged on the machine frame, the articulated boom comprising a proximal arm that is mounted in an articulated manner to the machine frame and a distal arm that is connected in an articulated manner to the proximal arm,   wherein the arrangement is configured to be operated in an operational mode, in which the proximal arm and the machine frame are interlocked.   
     
     
         2 . The arrangement of  claim 1 , wherein the arrangement is configured to be operated in a further operational mode, in which the proximal arm and the machine frame are not interlocked. 
     
     
         3 . The arrangement of  claim 1 , further comprising a locking device being arranged on the machine frame, wherein the locking device is engageable with the proximal arm so as to block any relative movement between the proximal arm and the machine frame. 
     
     
         4 . The arrangement of  claim 3 , wherein the locking device comprises at least one hydraulically operated hook for engaging the proximal arm. 
     
     
         5 . The arrangement of  claim 3 , wherein the locking device comprises at least one electrically operated hook for engaging the proximal arm. 
     
     
         6 . The arrangement of  claim 1 , further comprising a pin being arranged to the proximal arm, for fixing a piston rod eye of a positioning cylinder of the proximal arm, is configured to be locked to the machine frame. 
     
     
         7 . The arrangement of  claim 1 , further comprising an arm support comprising a supporting portion for supporting the proximal arm when interlocked with the machine frame, wherein the arm support is configured to absorb forces induced by the proximal arm. 
     
     
         8 . The arrangement of  claim 1 , wherein the proximal arm is lockable substantially flush with the machine frame or in a manner at least forming an acute angle with the machine frame when interlocked therewith. 
     
     
         9 . The arrangement of  claim 1 , wherein the articulated boom further comprises: an intermediate arm that is interconnected in an articulated manner between the proximal arm and the distal arm; and a positioning cylinder of the distal arm that is arranged above the intermediate arm. 
     
     
         10 . The arrangement of  claim 9 , wherein the intermediate arm, a positioning cylinder of the intermediate arm, and the positioning cylinder of the distal arm are arranged substantially parallel to each other. 
     
     
         11 . The arrangement of  claim 1 , further comprising a tool mount being mounted in an articulated manner to the distal arm for mounting a tool on the articulated boom. 
     
     
         12 . A construction machine, comprising:
 a chassis for moving the construction machine on a ground; and   an upper structure being arranged on the chassis with an arrangement according to  claim 1 .   
     
     
         13 . The construction machine of  claim 12 , wherein the upper structure comprises a recess for accommodating the proximal arm of the arrangement when interlocked with the machine frame of the arrangement. 
     
     
         14 . The construction machine of  claim 13 , wherein the construction machine is configured to be operated in a load mode, in which the proximal arm of the arrangement is interlocked with the machine frame of the arrangement. 
     
     
         15 . The construction machine of  claim 13 , wherein the construction machine is configured to be operated in an excavator mode, in which the proximal arm of the arrangement is not interlocked with the machine frame of the arrangement. 
     
     
         16 . The construction machine of  claim 13 , wherein the construction machine is configured to be operated in a load mode, in which the proximal arm of the arrangement is interlocked with the machine frame of the arrangement, and wherein the construction machine is configured to be operated in an excavator mode, in which the proximal arm of the arrangement is not interlocked with the machine frame of the arrangement. 
     
     
         17 . A method for changing an operational mode of a construction machine that includes a machine frame and an articulated boom, the articulated boom being arranged on the machine frame, the method comprising:
 interlocking a proximal arm of the articulated boom with the machine frame for switching between a first operational mode and a second operational mode of the construction machine.   
     
     
         18 . A method for changing an operational mode of a construction machine that includes a machine frame and an articulated boom, the articulated boom being arranged on the machine frame, the method comprising:
 unlocking a proximal arm of the articulated boom from the machine frame for switching between a first operational mode and a second operational mode of the construction machine.   
     
     
         19 . A method for retrofitting a construction machine with an arrangement according to  claim 1 .