Traction type elevator

Abstract

The invention relates to a traction type elevator. The traction type elevator comprises a traction guide device as well as a counterweight device and an elevator car which are connected to the two sides of the traction guide device, wherein the traction guide device is electrically connected with a motor and a control device; the counterweight device adopts a sealed piston type structure which comprises a longitudinal piston barrel, wherein a counterweight is arranged in the piston barrel, a piston motion space for allowing the counterweight to move up and down is arranged in the piston barrel, a gas-sealing device which can be tightly in contact with the inner wall of the piston barrel to reach the sealing effect is arranged on the counterweight, and the position, close to the lower end,of the piston barrel is equipped with a movable air door capable of controlling the size of an air door through the control device. The traction type elevator can process extra energy generated when the traction type elevator is under a power generation state, and is better in safety performance.

Description

technical field [0001] The invention relates to an elevator device, in particular to a traction elevator. Background technique [0002] The dragging structure of a general traction elevator is composed of a car and a counterweight connected by a set of wire ropes suspended on both sides of the traction wheel and the guide wheel, and the relative fixing method of the car and the counterweight is respectively through Guide rails are installed on the walls of the hoistway to realize the limitation of their movement track and emergency braking. But this structure has the following defects: 1. When the elevator is in the situation that the car is heavy and the counterweight is light and the car is going down or the car is light and the counterweight is heavy and the elevator is going up (hereinafter referred to as the elevator power generation state), the operation of the elevator will cause The power generation status of the control system, the electric energy needs to be proce...

AI Technical Summary

Problems solved by technology

But this structure has the following defects: 1. When the elevator is in the situation that the car is heavy and the counterweight is light and the car is going down or the car is light and the counterweight is heavy and the elevator is going up (hereinafter referred to as the elevator power generation state), the operation of the elevator will cause The power generation status of the control system, the power needs to be processed by adding additional circuits, such as converting heat energy to be consumed, which will cause the temperature rise of the mechanical room

2. The structure must be able to realize the mechanical limit operation protection when the running speed of the car exceeds the rated running speed by a large proportion (for example, overspeed 130%, act as a mechanical safety gear, and limit the car or counterweight to the vertical position of the guide rail ), and require special treatment to operate normally, poor security control

3. The braking device used by the elevator when it stops normally is the brake on the traction system. If the device is mechanically stuck, the elevator system can only realize overspeed detection and protection through the overspeed operation of the elevator. The elevator equipment has a great impact, and the safety control is poor

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