Derail alarm systems |
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| 申请号 | US14996223 | 申请日 | 2016-01-15 | 公开(公告)号 | US09981676B2 | 公开(公告)日 | 2018-05-29 |
| 申请人 | Edward Stanton Sandstrom; | 发明人 | Edward Stanton Sandstrom; | ||||
| 摘要 | A derail alarm system for notifying a tamping machine operator that a tamping projector buggy is in a derailed condition. A rail sensor with an ultrasonic beam attaches to a tamping projector buggy to sense alignment with a metal rail. When the ultrasonic sensor detects an out-of-tolerance condition, aural and red-LED light visual indications are electronically provided to the tamping machine operator. The tamping machine operator may disable the aural indication and change the red-LED indication to an amber-LED indication until the ultrasonic sensor detects an in-tolerance condition. A limit switch deactivates the cradle sensor when the tamping projector buggy is raised and stored in the travel position for a higher speed transport condition. | ||||||
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