Patent ID: 9016710
Filing Date: 2015-04-28
Classification: B62D,E01C,E02D

Abstract:
1. An apparatus for the articulated connection of a front vehicle frame and a rear frame of a construction machine, comprising: a pivot joint having a vertical pivot axis (K) on one of the front and rear vehicle frames; a crab-steering joint located at a distance from the pivot joint having a vertical rotational axis (H) on another of the front and rear vehicle frames; a connection support connecting the pivot joint and the crab-steering joint with one another, wherein the connection support is mounted as a pivoting arm on the front vehicle frame on one end and on the rear vehicle frame on the other end, and wherein the connection support is part of the crab-steering joint and carries the pivot joint; a steering drive for relative pivoting of the front frame and the rear frame about the pivot axis (K), with the steering drive being linked on one end to the vehicle frame which is connected to the pivot joint and on the other end to the connection support; a crab-steering drive for setting a lateral offset (s) between the front frame and the rear frame, the crab-steering drive being linked on one end to the vehicle frame that is near the pivot joint and on the other end to the connection support; wherein the rotational axis (H) of the crab-steering joint is connected more closely to the vehicle frame which is linked to the crab-steering joint then to the pivot axis (K) such that a distance between the front and rear vehicle frames increases when the crab-steering drive is actuated; and wherein a maximum increase in length of the construction machine (ΔL) achievable by actuating the crab-steering drive is equal the length (l) of the connection support.