Material handling machine

Abstract

The present invention relates to a material handling machine with a material handling boom and a cabin boom, wherein the cabin boom comprises first and second arms, which are pivotally connected with each other via a connecting element, and a first actuator for moving the first arm. In accordance with the invention, the actuator is pivotally mounted on the connecting element via a pivot point, which is disposed below the pivot point(s) of the first arm.

1 . A material handling machine with a material handling boom and a cabin boom, wherein
 the cabin boom comprises first and second arms, which are pivotally connected with each other via a connecting element, and a first actuator for moving the first arm, and   the actuator is pivotally mounted on the connecting element via a pivot point, which is disposed below the pivot point(s) of the first arm.   
   
   
       2 . The material handling machine in particular according to  claim 1 , wherein the first and second arms each are pivotally mounted on the connecting element via separate pivot axes. 
   
   
       3 . The material handling machine according to  claim 1 , wherein the actuator of the second arm is disposed on the lower surface of the second arm. 
   
   
       4 . The material handling machine according to  claim 1 , wherein the actuators of the first arm and/or of the second arm are under a compressive load by the weight of the cabin. 
   
   
       5 . The material handling machine according to  claim 1 , in which the operator cabin is forcibly guided parallel to or at a specific angle with respect to the ground by means of a positive connection. 
   
   
       6 . The material handling machine according to  claim 1 , wherein the first arm and/or the second arm is configured as a parallel steering arm. 
   
   
       7 . The material handling machine according to  claim 1 , wherein the first arm and/or the second arm comprises at least one supporting element which has a closed box profile. 
   
   
       8 . The material handling machine according to  claim 1 , wherein the first arm and/or the second arm is configured as a parallel steering arm and comprises a main supporting element disposed at the bottom, which has a closed box profile. 
   
   
       9 . The material handling machine according to  claim 1 , wherein the first arm and/or the second arm is configured as a parallel steering arm and the actuator associated to this arm engages the lower arm from outside the parallelogram. 
   
   
       10 . The material handling machine according to  claim 1 , wherein the first arm and/or the second arm has at least one hollow section in its interior for receiving the cables or tubes extending to the operator cabin. 
   
   
       11 . The material handling machine according to  claim 1 , wherein the connecting element includes a joint whose swivel axis is vertical to the pivot axes of the first arm and/or of the second arm. 
   
   
       12 . The material handling machine according to  claim 11 , wherein an actuator is associated to the joint of the connecting element. 
   
   
       13 . The material handling machine according to  claim 11 , wherein the joint of the connecting element pivotally connects a first part and a second part of the connecting element, and the first and second arms each are pivotally mounted on the first or second part of the connecting element. 
   
   
       14 . The material handling machine according to  claim 1 , wherein the connecting element has at least five separate pivot axes, namely two each for the arms configured as parallel steering arms and one for the actuator of the first arm. 
   
   
       15 . The material handling machine according to  claim 1 , wherein the cabin boom has a docking position on the material handling machine, in particular on the uppercarriage of the material handling machine. 
   
   
       16 . The material handling machine according to  claim 1 , wherein the cabin can be lowered to ground level by the cabin boom. 
   
   
       17 . The material handling machine according to  claim 1 , wherein a platform for transporting material is arranged at the cabin. 
   
   
       18 . The material handling machine according to  claim 2 , wherein the actuator of the second arm is disposed on the lower surface of the second arm. 
   
   
       19 . The material handling machine according to  claim 18 , wherein the actuators of the first arm and/or of the second arm are under a compressive load by the weight of the cabin. 
   
   
       20 . The material handling machine according to  claim 3 , wherein the actuators of the first arm and/or of the second arm are under a compressive load by the weight of the cabin.