Rope brake for overspeed upgoing elevator

Abstract

The invention is an elevator up-going clamping rope device installed between the tract wheel and guide wheel or right under the guide wheel. The steel wire crosses the device from the center. It is for the amendment of failures and safety assurance, includes steel wire clamping mechanism and trigger mechanism. The clamping mechanism has a fixed wedge and an active wedge symmetrically arranged in front and back side of the steel wire. The trigger mechanism consists of transient trigger, clasp board and the trigger pole fixed between and with the two clasp boards; the clasp board links with the active wedge hanging by active key, the trigger wire is fixed to the trigger pole, links to the elevator speed governor, is manually resettable by lift upwards slightly the pole after inserted into the hole previously made in the active wedge. The invention is of light trigger force, short trigger trip, adjustable brake force, many features such as tight structure, small size, light weight, easy to reset and so on. The clamp will become tighter and tighter when the elevator travels on inertia.

Description

technical field [0001] The invention relates to the technical field of fault correction or safety devices for elevator operation, in particular to a brake device that acts on the guide ropes of a car with friction. Background technique [0002] At present, the mechanism to prevent the elevator from overspeeding upwards adopts the method of triggering the limiter switch due to overspeed, so that the elevator trailing machine stops running, and then clamps the guide rail with the safety gear to stop the axle box; these methods are due to the large inertia of the elevator. The braking and stopping time of the axle box is prolonged, and there are hidden dangers of unsafety; in order to implement overspeed protection and smooth braking, a Chinese utility model patent discloses an "elevator traction rope brake", the patent number: 01274866.8, and the technical solution of this patent is similar to A kind of "elevator car brake device with spring-driven brake block" disclosed in th...

AI Technical Summary

Problems solved by technology

[0002] At present, the mechanism to prevent the elevator from overspeeding upwards adopts the method of triggering the limiter switch due to overspeed, so that the elevator trailing machine stops running, and then clamps the guide rail with the safety gear to stop the axle box; these methods are due to the large inertia of the elevator. The braking and stopping time of the axle box is prolonged, and there are hidden dangers of unsafety; in order to implement overspeed protection and smooth braking, a Chinese utility model patent discloses an "elevator traction rope brake", the patent number: 01274866.8, and the technical solution of this patent is similar to A kind of "elevator car brake device with spring-driven brake block" disclosed in the invention patent of our country: CN1084482A, is made of a custom-made brake lining plate fixed on the vertical plate, which is parallel to the custom-made brake lining plate. The brake lining, the pin shaft guiding the dynamic brake lining up and down, and the connecting arms on both sides of the two brake linings form a clamping mechanism. The movable liner is hinged, and the other end is hinged with the sliding shaft that slides through the oblong hole of the vertical plate. The sliding shaft is tied by the energy storage spring fixed at the bottom, connected with the trigger mechanism, and reset by the reset mechanism; it has simple structure and low cost. , small size and other characteristics; the disadvantage is that the trigger force required to pull the lock hook is relatively large, and the clamping rope depends entirely on the spring force of the energy storage spring, and the rope is clamped by the positive pressure of the parallel splint, and the clamping force required is also large.

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