The speed limiter comprises a base frame, a wheel shaft fixedly installed on the base frame and a rope wheel rotationally installed on the wheel shaft, the rope wheel is provided with a centrifugal mechanism, and the centrifugal mechanism comprises two centrifugal flail blocks which are located on the two sides of the wheel shaft respectively; the centrifugal throwing block is provided with a rotating end and a throwing-out end, and the rotating end is rotationally connected to the rope wheel. The distance between the rotating fulcrums of the two centrifugal flail blocks is smaller than the distance between the mass center points of the two centrifugal flail blocks. According to the speed limiter, due to the fact that the distance between the rotating fulcrums of the two centrifugal flail blocks is smaller than the distance between the mass center points of the two centrifugal flail blocks, compared with an existing mode that the rotating fulcrums of the two centrifugal flail blocks are symmetrically distributed on the two sides of a rope wheel shaft of the speed limiter, instant triggering and faster response are achieved when a lift car falls and weightlessness occurs, and the safety and reliability of braking of a safety protection device are improved.
本发明涉及一种限速器,包括基架、固定安装于基架的轮轴和转动安装于轮轴的绳轮,绳轮设有离心机构,离心机构包括两离心甩块,分别位于轮轴两侧;离心甩块具有转动端和甩出端,转动端转动连接于绳轮;两离心甩块转动支点的间距小于两离心甩块质心点的间距。本发明的限速器,由于两离心甩块转动支点的间距小于两离心甩块质心点的间距,相对于现有两离心甩块的转动支点对称分布于限速器绳轮轮轴的两侧,在轿厢坠落失重时瞬时触发,响应更快,提高了安全保护装置制动的安全可靠性。
Speed limiter
一种限速器
2024-08-02
Patent
Electronic Resource
Chinese
IPC: | B66B Aufzüge , ELEVATORS |