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Emergency stop system for elevator

An emergency and elevator technology, applied in elevators, transportation and packaging, etc., can solve the problems of inability to ensure high reliability of control systems and state sensors, and inability to realize product adaptation

Inactive Publication Date: 2012-03-07
MITSUBISHI ELECTRIC CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In conventional examples, there was a problem that it was not possible to ensure high reliability of the control system and state sensors, and it was not possible to adapt to products

Method used

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  • Emergency stop system for elevator
  • Emergency stop system for elevator
  • Emergency stop system for elevator

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] while referring to Figure 1 to Figure 4 , while explaining the emergency stop system of an elevator according to Embodiment 1 of the present invention. figure 1 It is a figure which shows the structure of the emergency stop system of the elevator which concerns on Example 1 of this invention. In addition, in each figure, the same code|symbol represents the same or a corresponding part.

[0019] exist figure 1 In the elevator, the main rope 13 connecting the car 15 and the counterweight 14 is suspended on the pulley 12. Usually, the hoist 11 is used to rotate the pulley 12 and the main rope 13 is driven by the friction between the pulley 12 and the main rope 13. And the movement of the car 15 and the counterweight 14 connected thereto. In addition, the speed governor 16 is a device for stopping the car 15 by hoisting the interlocking speed governor rope 17 to perform an emergency stop operation when the car 15 becomes too fast when descending. The motion of 15 is li...

Embodiment 2

[0041] while referring to Figure 5 to Figure 8 , while explaining the emergency stop system of an elevator according to Embodiment 2 of the present invention. Figure 5 It is a figure which shows the structure of the emergency stop system of the elevator which concerns on Example 2 of this invention.

[0042] exist Figure 5 Among them, the structure of the emergency stop system of the elevator is based on the structure of the above-mentioned embodiment 1, and a third speed governor encoder 3 is also provided.

[0043] Image 6 It is a block diagram showing the structure of the braking control device of the emergency stop system of the elevator in Embodiment 2 of this invention. The function of the brake control device 31 is the same as that of the above-mentioned first embodiment, and its purpose is to control the braking force of the brake. Inside the brake control device 31, there is: a sensor signal processing part 41, which performs signal processing on signals recei...

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PUM

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Abstract

An emergency stop system for an elevator has a state sensor for detecting operation of an elevator car; a brake device for braking the car; a brake control device for outputting a signal for operating the brake device based on a signal detected by the state sensor; and an uninterruptible power supply device for supplying electric power to the state sensor, the brake device, and the brake control device. The brake control device has a signal processing / calculation section for calculating the deceleration of the car based on the signal detected by the state sensor; a command value calculation section for calculating a command value for operating the brake device, the calculation being performed based on the deceleration of the car calculated by the signal processing / calculation section; anda power source monitor device for monitoring the state of the uninterruptible power supply device.; At least one of the state sensor, the signal processing / calculation section, and the command value calculation section has a plurality of independent systems.

Description

technical field [0001] The present invention relates to an emergency stop system for an elevator that brakes a car ascending and descending in a hoistway to perform an emergency stop. Background technique [0002] In conventional elevators, it has been proposed to control the braking force of the electromagnetic brake so that the deceleration of the car during an emergency stop becomes a predetermined value based on a deceleration command and a speed signal (for example, refer to Patent Document 1). Therefore, even in an emergency stop, it is possible to stop with no excessive or insufficient deceleration, without affecting the human body due to excessive deceleration, and it is possible to stop within the allowable stopping distance even in the terminal floor. [0003] Patent Document 1: Japanese Patent Application Laid-Open No. 7-157211 [0004] In conventional examples, there were problems in that it was not possible to ensure high reliability of the control system and s...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B66B1/32B66B5/02B66B1/34
CPCB66B5/02B66B1/32B66B5/0031B66B1/34
Inventor 近藤力雄上田隆美木川弘冈本健一汤村敬
Owner MITSUBISHI ELECTRIC CORP