The invention discloses an over-speed protection device for an elevator. The over-speed protection device structurally comprises a protective shell, a foot pad, a rotary table, a fixing block, a firstspring, a pawl, a wire rope, a pawl disk, a fixing rod, a pull rod, a deceleration block, a second spring, a dust-proof device and a fixing device. According to the design, the dust-proof device is arranged at the top end face of the protective shell, and a worker can rotate a supporting plate leftwards after maintaining a speed governor; the supporting plate drives the fixing plate to rotate leftwards when rotating, and a rotating block is driven to rotate leftwards through a bearing; when the supporting plate rotates leftwards, a dust cover is pushed to rotate to the surface of the protective shell so as to prevent parts in the protective shell against dust; heat generated during long-term rotation of the rotary table is discharged through a ventilation net, so that the beneficial effects of dust prevention and protection of the parts in the protective shell are realized.
本发明公开了一种电梯超速保护装置,其结构包括防护壳、脚垫、转盘、固定块、第一弹簧、棘爪、钢索、棘爪盘、固定杆、拉杆、减速块、第二弹簧、防尘装置和固定装置,本设计通过防护壳顶端面设置有防尘装置,在工作人员对限速器进行检修完后,可将支撑板进行向左转动,支撑板转动时带动固定板进行向左转动,从而带动转动块通过轴承进行向左转动,而支撑板向左转动时推动防尘罩,使防尘罩转动置防护壳表面,从而对防护壳内部零件进行防尘,转盘长时间转动产生的热量会通过通风网进行排出,达到了对防护壳内部零件进行防尘和防护的有益效果。
Over-speed protection device of elevator
一种电梯超速保护装置
2020-10-09
Patent
Elektronische Ressource
Chinesisch
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