| 摘要 |
FIELD: machine building. ^ SUBSTANCE: hydro-drive consists of hinged lever 5, of tension roller 1, and of spring 7. It has actuating hydro-cylinder of double action 6 connected to a hydro-system via hydro-lines 11, 12 and distributor 14. The hydro-system includes tank 17, pump 18 and safety valve 21. Also the distributor is equipped with hydro-controlled locking device 13 with two lock valves 27, 28 and safety valve 32. The safety valve with its input is connected with ante-valve cavity 30 of valve 27 of locking device 13 at position of the distributor "Tensioner on". Through its output the safety valve is connected with hydro-line 12 of actuating hydro-cylinder 6 before another valve 28 of locking device 13. ^ EFFECT: simplification of design and control of tensioner of belt transmission. ^ 3 cl, 2 dwg |
