| 摘要 |
<p>Tensioning system of traction tracks (21, 32) of a machinery by means of a hydraulic cylinder (31) applying a tensioning force on at least one of the wheels (19) on which the track is wound according to a closed chain configuration in which the hydraulic cylinder (31) is fed with different pressures according to the traction direction, in a first traction direction the feeding pressure of the tensioning hydraulic cylinder (31) being a first pressure approximately corresponding to the pressure which is generated by a pump which is present on a closed circuit feeding the traction devices, in a second traction direction the feeding pressure of the tensioning hydraulic cylinder (31) being a second pressure corresponding to the pressure of the closed circuit up to a predetermined upper limit value.</p> |
