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Elevator device

A technology of elevators and stopping devices, which is applied in the direction of transportation, packaging, elevators, etc., which can solve the problems that the car cannot fall and stop, and achieve the effect of shortening the journey

Active Publication Date: 2015-03-04
MITSUBISHI ELECTRIC CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] However, if the main rope is broken, even if the brake of the traction machine is operated, the falling of the car cannot be stopped.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment approach 1

[0032] figure 1 It is a configuration diagram showing the elevator apparatus according to Embodiment 1 of the present invention. In the figure, a machine room 2 is provided on the upper part of the hoistway 1 . The machine room 2 is provided with a traction machine (drive device) 3 , a deflector pulley 4 and a control device 5 . The hoisting machine 3 has a driving sheave 6 , a hoisting machine motor that rotates the driving sheave 6 , and a hoisting machine brake (electromagnetic brake) 7 that brakes the rotation of the driving sheave 6 .

[0033] The traction machine brake 7 has: a brake wheel (brake drum or brake disc), which is coaxially engaged with the drive sheave 6; a brake shoe, which contacts / separates from the brake wheel; a brake spring, which will brake The moving shoe pushes against the brake wheel to apply a braking force; and the electromagnet overcomes the force of the brake spring to make the brake shoe leave the brake wheel to release the braking force.

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Embodiment approach 2

[0064] under, Figure 8 It is a block diagram schematically showing a main part of an elevator apparatus according to Embodiment 2 of the present invention, Figure 9 is showing Figure 8 The top view of the car 9. A pair of pins 31 serving as guides are erected on the top of the car 9 . Also, a pair of support springs 32 surrounding the pin 31 are provided on the upper surface of the car 9 .

[0065] A pair of grip levers (weight bodies) 33 facing each other are supported by support springs 32 . The support spring 32 is provided between the grip rod 33 and the car 9, and is initially compressed by the grip rod 33 in normal times. In addition, in a normal state, the pin 31 penetrates the grip rod 33 , and the grip rod 33 can move up and down along the pin 31 .

[0066] Such as Figure 9 As shown, the part of the opposite side of the side connected to the action lever 16 of the speed governor rope 19 is arranged between the handle bars 33, wherein the side and the opposit...

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PUM

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Abstract

An elevator device wherein a cage (9) is suspended by a suspending means, and is vertically moved through a vertical motion path. The cage (9) is equipped with an emergency stop device (15). A speed governor mechanism (21) includes an actuating lever (16) for actuating the emergency stop device (15), a speed governor loop (19) that is laid within the vertical motion path and is connected to the actuating lever (16), and a speed governor sheave (18) around which the speed governor loop (19) is wound. When the suspending means is broken, the inertial mass of the speed governor mechanism (21) is changed so as to reduce the acceleration of the actuating lever (16) in relation to the acceleration of the cage (9).

Description

technical field [0001] The invention relates to an elevator system for emergency stopping of a car by means of an emergency stop device, for example, when a suspension unit breaks. Background technique [0002] In the speed governor of the elevator device in the past, the first overspeed Vos (operation speed of the switch for operation stop) is set to about 1.3 times the rated speed Vo, and the second overspeed Vtr (operation speed of emergency stop) is set to Approximately 1.4 times the rated speed Vo. For example, when it is detected that the car exceeds the rated speed and reaches the first overspeed Vos due to an abnormality of the control device, etc., the power supply to the hoisting machine is cut off, and the car stops quickly. In addition, when the car falls due to breakage of the main rope, etc., the speed governor detects the second overspeed Vtr, the emergency stop device operates, and the car is stopped in an emergency. [0003] However, when the car is locate...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B66B5/12B66B5/04
CPCB66B5/18
Inventor 渡边诚治福井孝太郎
Owner MITSUBISHI ELECTRIC CORP
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