Elastic driving belt and detecting method for residual elastic elongation therefor |
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| 申请号 | JP40512290 | 申请日 | 1990-12-21 | 公开(公告)号 | JPH04210143A | 公开(公告)日 | 1992-07-31 |
| 申请人 | Pirelli Transmissioni Ind Spa; | 发明人 | EDOARUDO ROBETSUCHI; | ||||
| 摘要 | PURPOSE: To properly discriminate and detect residual elastic elongation of an elastic driving belt extended between two pulleys by maintaining center distance between these two revolving pulleys constant, as far as tensile force of a belt gradually lowering by a permanent elongation action that a belt itself receives becomes stable at a substantially fixed value. CONSTITUTION: When an elastic driving belt 1 which is extended between two pulleys 7, 8 having a fixed distance between centers and has prescribed initial tensile force receives a permanent elongation action and the belt 1 is wound by a coefficient of residual elastic elongation according to two prescribed bending lines, a value between coefficients of contraction which are detectable along an inner end edge of the belt 1 itself is provided. This coefficient of residual elastic elongation is detected by measuring residual stress of the belt 1 and reading a coefficient of elongation corresponding to a residual tensile force value by a coefficient of load-elongation graph on the belt 1, when permanent elongation is generated. COPYRIGHT: (C)1992,JPO |
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