Direct push reset type elevator speed limiter

Abstract

The invention relates to a direct push reset type elevator speed limiter. A reset mechanism is used for resetting the elevator speed limiter to return to an initial state. The elevator speed limiter comprises a speed limiter support plate, rope wheels, a centrifugal hammer, a switch striking plate, an action triggering mechanism and the reset mechanism for resetting the return switch striking plate, wherein the reset mechanism comprises a reset rod, a reset plate and an electromagnet, the top end of the reset rod is fixedly connected with the switch striking plate, an L-shaped bend is arrangedat the tail end of the reset rod, the tail end, close to the reset rod, of the reset plate is arranged on the speed limiter support plate, the reset plate is provided with a V-shaped groove, the opening end of the V-shaped groove faces the reset rod, the L-shaped bend at the tail end of the reset rod is arranged in the V-shaped groove, the reset plate is slidably connected with the speed limitersupport plate, and the electromagnet is connected with the reset plate and is used for driving the reset plate to slidably translate in the length direction of a connecting rod. The elevator speed limiter is simple in overall structure, accurate in reset and accurate in resetting the switch striking plate, and can ensure reliable reset when the elevator speed limiter needs to reset an electrical switch.

Description

technical field [0001] The invention relates to an elevator safety component, in particular to the field of elevator speed governors, in particular to a direct-push reset type elevator speed governor. Background technique [0002] Elevators are widely used in people's daily life. In order to ensure people's safety and prevent elevator overspeed from causing harm to people, elevator overspeed governors are used as safety components for monitoring elevator overspeed. Due to the limited space of the elevator shaft or the reduction of the cost, the machine room-less speed limiter is widely used. [0003] When the elevator has an overspeed fault or when the elevator linkage function is tested, the speed limiter completes the trigger action. When it is necessary to reset the speed limiter, for the machine room-less speed limiter, the maintenance personnel need to perform remote operation to reset the speed limiter. In addition to resetting the mechanical part of the speed limiter...

AI Technical Summary

Problems solved by technology

When it is necessary to reset the speed limiter, for the machine room-less speed limiter, the maintenance personnel need to perform remote operation to reset the speed limiter. In addition to resetting the mechanical part of the speed limiter, it is also necessary to The electrical switch is remotely reset. The existing mechanisms for resetting the electrical switch mostly use the motor to drive the connecting rod to rotate, and then drive the switch connected to the connecting rod to return to the original position. However, the drive reset structure driven by the motor is more complicated, and the control of the motor It is more difficult, because the motor is often burned due to the excessive stall torque of the motor, not only the cost is high, but also the accurate reset of the switch plate cannot be guaranteed

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