The invention relates to a rail speed-limiting safety device for an elevator and belongs to the field of safety devices for rail-mounted elevating transporters pulled through steel wire ropes. The rail speed-limiting safety device for the elevator comprises a friction speed governor, a clutch, a chain wheel transmission mechanism and a clamping and pressing mechanism. The friction speed governor, the clutch and the chain wheel transmission mechanism form an integrated transmission mechanism through the chain wheel transmission mechanism. The clamping and pressing mechanism is composed of a pressing wheel support, a compression spring support, a hinging and supporting linkage plate and a speed governor base, and the pressing wheel support, the compression spring support, the hinging and supporting linkage plate and the speed governor base are connected through hinge pins respectively to form a four-bar linkage mechanism. The integrated transmission mechanism is connected to the four-bar linkage mechanism, a hinging fulcrum B and a hinging fulcrum G are formed, and a pressing wheel and a friction speed-limiting wheel are made to be close to the two sides of a rail. When an accidental excessive speed occurs, the rail speed-limiting safety device can be used for limiting the speed sensitively, synchronization and rapidness are achieved, the performance is reliable, and safety and stability are guaranteed; due to the fact that the adopted friction speed-limiting wheel is an independent assembly, the specification and dimension of the friction speed-limiting wheel can be changed according to the different speeds of the elevator, and the rail speed-limiting safety device can be used under different rail operating conditions.
Rail speed-limiting safety device for elevator
02.12.2015
Patent
Elektronische Ressource
Englisch
IPC: | B66B Aufzüge , ELEVATORS |
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