Retarder for multi-car parallel elevator

Abstract

The invention discloses a retarder for a multi-car parallel elevator, the retarder is mounted on a suspension, the suspension is connected with cars, the suspension is provided with two groups of guide limiting wheel sets which are arranged at intervals, the retarder comprises a retarder body, a static wedge block, a movable wedge block and a force application unit, the retarder body is fixedly mounted on the suspension, the static wedge block is fixedly mounted on the suspension, and the movable wedge block is fixedly mounted on the suspension. The movable wedge block and the static wedge block are both in a wedge shape, the inclined faces of the movable wedge block and the static wedge block are matched, the force application unit is connected with the movable wedge block and drives the movable wedge block to move along the inclined faces, and the movable wedge block moves towards the guide rail to the face making contact with the guide rail and forms different friction force with the guide rail or moves away from the guide rail. The guide limiting wheel set guides the lift car to move along the track of the guide rail, so that the movable wedge block is in complete contact with the guide rail surface when the retarder acts. Slow speed reduction of the lift car is achieved, elevator overspeed is avoided, and the overspeed action of the safety tongs is reduced; the retarder directly acts on the lift car, slow-speed leveling rescue and escape are achieved, and the structure is simple and reliable.

Description

technical field [0001] The invention belongs to the technical field of elevators, in particular to a retarder for multi-car parallel elevators. Background technique [0002] In modern social and economic activities, elevators have become an indispensable means of vertical transportation for people or goods. Since the invention of the elevator in 1854, the elevator car has been driven by wire rope pulleys. By setting up the machine room, traction motor and deceleration device on the top floor of the building, the wire rope is driven to pull the car and the counterweight on the track in the hoistway. run. This driving method makes it possible to run only one car in a single well, and the elevator in the single-car operation mode can still meet the use requirements in low-rise buildings and floors with small passenger flow. With the rapid development of modern cities, high-rise buildings and super high-rise buildings with large population density have sprung up, and the short...

AI Technical Summary

Problems solved by technology

[0006] When the traditional wire rope traction elevator needs to slow down, a rope gripper is used. The rope gripper is installed in the machine room. Wire ropes can also cause damage, affecting the life and comfort of the elevator

Or take the redundant brake mode, by setting two or more sets of brakes on the traction machine, consider double the braking force redundant design, through the brake acting on the traction sheave, relying on the friction torque to stop the elevator, which also requires a large Friction torque, and double the braking force redundancy design, the entire braking system structure and action control requirements are higher, the brake use efficiency is low, and the cost is high

[0007] The multi-car parallel elevator has multiple shafts, and the guide rails in different shafts are connected by switching rails. The switching rails have curved sections. Arc track interference requires the design of larger avoidance jaws, which are large in size and complex in structure, and the brake pads cannot fully contact the arc guide rail surface when the deceleration component moves, and the contact area of ​​the deceleration components on the left and right sides of the guide rail is also small. Unevenness, resulting in unbalanced braking force and unilateral force, affecting the deceleration effect and safety of deceleration parts

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