TRANSPORTING DEVICE HAULING EQUIPMENT TENSIONER Russian patent published in 2017 - IPC B65G23/44 A01D61/02 

FIELD: transportation.

SUBSTANCE: device is intended for tensioning the hauling equipment (5, 15, 26) of the transporting device, wherein hauling equipment (5, 15, 26) comprises a plurality of grippers (6, 16, 27) and extends between driving wheel (7, 17, 28) and guide wheel (8, 18, 29). To adjust the tension of hauling equipment (5, 15, 26), the distance between the axes of guide wheels (8, 18, 29) and driving wheel (7, 17, 28) can be adjusted by a hydraulic cylinder (9, 19, 34) effecting guide wheel (8, 18, 29). Hydraulic cylinder (9, 19, 34) comprises a piston (20) of the cylinder, located in discharge chamber being movable and designed to tension hauling equipment (5, 15, 26), and piston (20) is loaded with working fluid from pressure source, flowing through the shut-off valve opening in the discharge chamber. After switching of the shut-off valve into the locking condition, the discharge chamber is connected with the device to receive a certain amount of working fluid. Shut-off valve (65, 83) is designed as a back valve. Locking element (67, 89) of the back valve, spring-loaded towards hole (53, 86) for supplying the working fluid forms one unit together with a device for receiving a certain amount of working fluid.

EFFECT: prevented excessive tension of the hauling equipment, reduced wear of the device.

12 cl, 5 dwg