| 摘要 |
AN ELEVATOR, PREFERABLY AN ELEVATOR WITHOUT MACHINE ROOM. IN THE ELEVATOR, A HOISTING MACHINE(6) ENGAGES A SET OF HOISTING ROPES(3) BY MEANS OF A TRACTION SHEAVE (7). THE SET OF HOISTING ROPES(3) COMPRISES HOISTING ROPES OF SUBSTANTIALLY CIRCULAR CROSS-SECTION.THE HOISTING ROPES (3)SUPPORT A COUNTERWEIGHT(2) AND AN ELEVATOR CAR(1) MOVING ON THEIR RESPECTIVE TRACKS. THE HOISTING ROPE(3) HAS A THICKNESS BELOW 8MM AND/OR THE DIAMETER OF THE TRACTION SHEAVE(7) IS SMALLER THAN 320 MM. THE CONTACT ANGLE BETWEEN THE HOISTING ROPE OR HOISTING ROPES(3) AND THE TRACTION SHEAVE(7) IS LARGER THAN 180º.FIG. 1
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