The invention belongs to the technical field of protection of elevators at lower floors and discloses an overspeed protection device for ascending of an elevator. The overspeed protection device comprises a car frame, auxiliary frames arranged on the two sides of the car frame, a speed limiting box fixedly arranged on the back of the car frame and a speed detector arranged above the car frame. Aniron core externally wound by a conductive winding, an adsorption part arranged below the iron core and fixing guide plates symmetrically arranged on the two sides of the adsorption part are arrangedin the speed limiting box, guide rods stretching out of the speed limiting box and elastic parts arranged on the bodies of the guide rods in a winding mode are arranged below the fixing plates, a traction rope arranged at the bottom of the adsorption part in a winding mode is connected to one end of each guide rod, and a guide wheel is arranged at the end, facing the corresponding auxiliary frame,of each guide rod. The device is applied to the situation when the speed is too high in the ascending process of the elevator at low floors, the iron core externally wound by the conductive winding is electrified to attract the adsorption part, the traction ropes arranged at the bottom of the adsorption part in the winding mode are pushed through the fixing plates to move vertically downwards until the traction ropes are disengaged from the adsorption part, then the guide wheels are popped out to the auxiliary frames through the elastic parts to increase resistance, and thus speed reduction of the elector is achieved.

    本发明属于低楼层电梯保护技术领域,公开一种用于电梯上行超速保护装置,包括轿厢架、置于轿厢架两侧的辅助架、固设于轿厢架背部的限速箱和设置在轿厢架上方的速度检测器,限速箱内置有外部缠绕导电绕组的铁芯、置于铁芯下方的吸附件和对称设置在吸附件两侧的固定导板,固定导板下方设有伸出于限速箱的导杆和绕设在导杆杆身的弹性件,导杆一端连接有绕设在吸附件底部的牵引绳,导杆面向辅助架一端设有导向轮;此装置运用于低楼层电梯在上行过程中出现速度过快时,将外部缠绕导电绕组的铁芯通电以吸引吸附件,通过固定导板推动绕设在吸附件底部的牵引绳竖直向下移动至脱离吸附件,进而由弹性件弹出导向轮至辅助架上增大阻力,以实现电梯降速。


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    Title :

    Overspeed protection device for ascending of elevator


    Additional title:

    一种用于电梯上行超速保护装置


    Contributors:
    CHEN QINJIAN (author) / CAI YUAN (author) / WANG BIN (author)

    Publication date :

    2020-06-23


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Chinese


    Classification :

    IPC:    B66B Aufzüge , ELEVATORS



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