发明名称 |
SAFETY DEVICE FOR A CABLE STRETCHING MACHINE, CORRESPONDING METHOD AND STRETCHING MACHINE USING SAID DEVICE |
摘要 |
Safety device for a stretching machine of the brake type comprising a negative brake which can be selectively activated and de-activated so as to constrain and respectively allow the rotation of at least one capstan which supports cables, a pumping device connected to the negative brake and configured to de-activate the latter during the normal use of the stretching machine, putting a working fluid under pressure, pressure energy accumulation means of said working fluid, and a maximum pressure valve configured to regulate the working pressure of a hydraulic motor for controlling the twisting torque applied to the capstan. The device also comprises a motorized drive device connected to the maximum pressure valve and provided to selectively regulate the action of the latter on the hydraulic motor, even in a breakdown condition of at least the pumping device, in order to maintain the working pressure of the hydraulic motor and to maintain the negative brake de-activated by the intervention of the pressure energy accumulation means. |
申请公布号 |
US2015300429(A1) |
申请公布日期 |
2015.10.22 |
申请号 |
US201314650065 |
申请日期 |
2013.12.04 |
申请人 |
TESMEC SPA |
发明人 |
VITALI Maurizio;OSCAR Alberto |
分类号 |
F16D59/00;B60M1/28;F16D65/28;H02G1/04 |
主分类号 |
F16D59/00 |
代理机构 |
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代理人 |
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主权项 |
1. A safety device for a stretching machine of the brake type comprising a negative brake which can be selectively activated and de-activated so as to constrain and respectively allow the rotation of at least one capstan which supports cables, a pumping device connected to the negative brake and configured to de-activate the latter during the normal use of the stretching machine, putting a working fluid under pressure, pressure energy accumulation means of said working fluid, and a maximum pressure valve configured to regulate the working pressure of a hydraulic motor for controlling the twisting torque applied to the capstan, wherein it comprises a motorized drive device connected to the maximum pressure valve and provided to selectively regulate the action of the latter on the hydraulic motor, even in a breakdown condition of at least said pumping device, in order to maintain said working pressure of the hydraulic motor and to maintain said negative brake de-activated by the intervention of said pressure energy accumulation means. |
地址 |
Milano IT |