Elevator device

A technology of elevators and safety relays, applied in transportation, packaging, elevators, etc., can solve problems such as increased deceleration and passenger discomfort

Active Publication Date: 2013-10-02
MITSUBISHI ELECTRIC CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] However, in the above-mentioned elevator device, although the car can be prevented from colliding with the terminal portion, there is a problem that although the safety of passengers can be ensured as long as the impact when the car collides with the buffer is within a predetermined value, there is such a problem. Problem: The deceleration of the car needs to be increased more than necessary, causing discomfort to the passengers in the car

Method used

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Embodiment approach 1

[0017] use figure 1 , the overall structure of the elevator in this embodiment will be described. A hoisting rope 3 that connects the car 1 that moves up and down in the hoistway and the counterweight 2 is wound around a sheave 4 that is rotated by a hoisting machine 6 . During normal operation, the sheave 4 is rotated by the hoisting machine 6 according to a command from the elevator control device 5 . The hoisting rope 3 is moved by the frictional force generated between the sheave 4 and the hoisting rope 3 , so that the car 1 and the counterweight 2 connected by the hoisting rope 3 travel.

[0018] In the brake device, the brake bushes 8 , 9 are pressed against the brake pulley 7 which is fixed to the sheave 4 and rotates by the urging force of the elastic body constituted by the brake spring. Therefore, a frictional force is generated between the brake wheel 7 and the brake bushes 8 , 9 , and the brake bushes 8 , 9 brake the brake wheel 7 . The hoisting machine 6 and th...

Embodiment approach 2

[0039] The brake control device 16 in this embodiment is based on the speed of the car 1 obtained from the car running information collection units such as the hoisting machine encoder 11, the speed limiter 14, and the position sensor at each time, and the speed from the car 1 to the buffer zone. The remaining distance of the relay 15 (hereinafter referred to as the remaining distance) determines whether the collision speed of the car 1 can be decelerated below a predetermined speed, and instructs the opening and closing of the safety relays 20 and 21.

[0040] use Figure 4 , the structure of the brake control device 16 in this embodiment will be described. The brake control device 16 receives (i) information on the speed and remaining distance of the car 1 obtained from the car travel information collection units such as the hoisting machine encoder 11, the speed limiter 14, and the position sensor, and (ii) From the elevator control device 5, indicating that it is in a sta...

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PUM

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Abstract

An elevator system includes a car (1) traveling up and down along a hoistway; a buffer (15) for stopping the car (1) at an end of the hoistway, brakes (7), (8), and (9) for braking travel of the car (1); a car traveling-information acquisition means for acquiring car traveling information; and a brake control means (10) for controlling the brakes (8) and (9), based upon the information acquired by the car traveling-information acquisition means, so as to reduce a collision speed at a collision of the car with the buffer to below a predetermined speed so that a shock at the collision of the car (1) with the buffer (15) can be absorbed to a level below a specified value.

Description

technical field [0001] The present invention relates to an elevator apparatus having a braking device for braking a car in an emergency. Background technique [0002] For a conventional braking device for braking an elevator car, see Japanese Patent Application Laid-Open No. 7-206288. The elevator apparatus described in Japanese Patent Application Laid-Open No. 7-206288 can prevent the car from colliding with the terminal portion by increasing the deceleration of the car near the terminal floor of the hoistway. [0003] Patent Document 1: Japanese Patent Application Laid-Open No. 7-206288 [0004] However, in the above-mentioned elevator device, although the car can be prevented from colliding with the terminal portion, there is a problem that although the safety of passengers can be ensured as long as the impact when the car collides with the buffer is within a predetermined value, there is such a problem. Problem: The deceleration of the car is increased more than necess...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B66B1/32
CPCB66B1/32
Inventor 近藤力雄木川弘
Owner MITSUBISHI ELECTRIC CORP
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