Patent ID: 8733850
Filing Date: 2014-05-27
Classification: B62D

Abstract:
1. An apparatus for controlling tension of a track, comprising a track frame; an idler frame in which an idler is fixed; a roller frame in which a front roller is fixed; a buffer member; a rear roller fixed to the track frame; and a tension controlling cylinder, wherein the track frame supports the tension controlling cylinder, roller frame, buffer member and idler frame in that order along a line from a rear of the track frame toward a front of the track frame such that tension controlling cylinder is in contact with the roller frame, the roller frame is in contact with the buffer member opposite the contact between the tension controlling cylinder and the roller frame, and the idler frame is in contact with the buffer member opposite the contact between the roller frame and buffer member, and wherein the tension controlling cylinder, roller frame, buffer member and idler frame are supported by the track frame along the line such that the roller frame and idler frame can be moved together along the line with respect to the track frame and such that the buffer member provides for the buffering of a shock to the idler along the line and toward the tension controlling cylinder.