| 摘要 |
PCT No. PCT/FI86/00095 Sec. 371 Date Jun. 22, 1987 Sec. 102(e) Date Jun. 22, 1987 PCT Filed Sep. 8, 1986 PCT Pub. No. WO87/01425 PCT Pub. Date Mar. 12, 1987.The objects of the invention are a V-belt pulley and drive and it relates to V-belt transmissions, where the belt is a die-cut type without changes in the construction in the lateral direction. The aim is to improve efficiency and safety of function, in particular in slow-running drives working in dirty environment. The method used is to make arched round bottomed grooves on the contact surfaces of the pulleys. By optimizing of the spiral forms and their inclination angles it has been tried to control the wedging of the belt between contact cones of the pulleys and besides to reduce the radial sliding of the belt. It can also be useful to make two groovings crossing each other onto the contact surfaces to assist them in getting and staying clean.
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