Electrically operated brake |
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| 申请号 | EP12178434.2 | 申请日 | 2012-07-30 | 公开(公告)号 | EP2567876A3 | 公开(公告)日 | 2018-03-14 |
| 申请人 | R. Bance & Company Limited; | 发明人 | Ryan, Tony; Binder, Kevin Mark; | ||||
| 摘要 | An electrically actuated brake may be operated remotely, e.g. attached to a battery powered lightweight rail maintenance vehicle, or a trailer towed by such a vehicle. It comprises an electrically operated actuator (34, Fig. 4) having a control system (36, Fig. 4) responsive to both (i) an electrical signal variable between substantially two discrete states (e.g. "on" and "off") and (ii) a continuously variable electrical signal; the control system controlling the actuator in response to the signal variable between the two discrete states to move the brake between a fully applied and a fully released condition; the control system being further operative to control the actuator in response to the continuously variable signal to move the brake so as to provide a continuously variable braking force/torque. Both signals (i) and (ii) are applied to the control system through a common control line 76. Brake shoes 22 are moved by the actuator via a mechanical linkage 26, against a resilient bias provided by tension springs (72, Fig. 4). |
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