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Elevator device

A technology for elevators and monitoring devices, which can be used in transportation, packaging, elevators, etc., and can solve problems such as unrealistic and unrealistic conditions.

Active Publication Date: 2011-07-20
MITSUBISHI ELECTRIC CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, there is a problem that the above-mentioned conditions are unrealistic, that is, it is unrealistic that there is no deviation between the motor movement amount and the car movement amount after the car stop command is detected

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment approach 1

[0031] figure 1 It is a block diagram showing the elevator apparatus according to Embodiment 1 of the present invention. In the figure, the car 1 and the counterweight 2 are suspended in the hoistway by a plurality of main ropes 3 as suspension bodies, and are raised and lowered in the hoistway by the driving force of the traction machine 4 . The suspended body can adopt multiple conveyor belts. A plurality of guide rails (not shown) for guiding the lifting and lowering of the car 1 and the counterweight 2 are provided in the hoistway.

[0032] The hoisting machine 4 has a driving sheave 5 around which the main rope 3 is wound, a motor 6 that rotates the driving sheave 5 , and a hoisting machine brake 7 that brakes the rotation of the driving sheave 5 .

[0033] The traction machine brake 7 is, for example, an electromagnetic brake device. In the electromagnetic braking device, the brake shoe is pressed against the braking surface by the elastic force of the brake spring, ...

Embodiment approach 2

[0070] under, Figure 6 It is a configuration diagram showing an elevator apparatus according to Embodiment 2 of the present invention. In the figure, the hoisting machine brake 7 is provided with a brake switch 45 as a braking detection means (third detection means) for detecting operation / non-operation of the hoisting machine brake 7 . The brake switch 45 is a switch for determining the operation / non-operation of the hoisting machine brake 7 based on the movement of the movable part in the hoisting machine brake 7 . Furthermore, the brake switch 45 outputs an ON signal when the hoisting machine brake 7 is in an operating state (braking state), and outputs an OFF signal when it is in a non-operating state (released state).

[0071] The output signals of the motor encoder 11 and the brake switch 45 are input to the state monitoring device 40 . The state monitoring device 40 monitors a decrease in the braking capability of the hoisting machine brake 7 based on the output sign...

Embodiment approach 3

[0087] under, Figure 9 It is a configuration diagram showing an elevator apparatus according to Embodiment 3 of the present invention. In the drawing, an upper position display panel (upper mark) 56 is provided at the upper part in the hoistway. The upper position display panel 56 is normally secured in the topmost flat position. A lower position display board (lower mark) 57 is provided at the lower part in the hoistway. The lower position display panel 57 is usually fixed in the lowest level position.

[0088] A position sensor 55 is installed in the car 1 . The position sensor 55 detects that the car 1 is located at the topmost floor or the bottommost leveling floor position by detecting the position display boards 56 and 57 . The inspection section detection unit is composed of a position sensor 55, an upper position display panel 56 and a lower position display panel 57, and detects that the car 1 is moving in a pre-set inspection section in the hoistway.

[0089] I...

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PUM

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Abstract

In an elevator device, an elevator car and a counterbalance weight are suspended by a suspending body. The suspending body is wrapped over a drive sheave of a hoist. A drive sheave-side detecting means generates a signal corresponding to a rotation of the drive sheave. A suspending body-side detecting means generates a signal corresponding to a movement of the elevator car or the suspending body.A condition monitoring device performs condition monitoring by comparing the difference between a position signal, which is sent from the drive sheave-side detecting means and occurs from the start to the stop of the elevator car, and a position signal, which is sent from the suspending body-side detecting means, with a predetermined threshold profile.

Description

technical field [0001] The present invention relates to an elevator installation having a condition monitoring device capable of monitoring system conditions such as tractive force drop and braking force drop. Background technique [0002] In the past elevator state monitoring device, the absolute position signal XABS of the car is compared with the position signal XIG of the motor (tractor), and when the deviation between the two is greater than a certain threshold, it is determined that the traction force has decreased. Make the car come to an emergency stop. And, compare the value of XIG and the length of the sign when passing a strip sign of a predetermined length provided on each floor, and when the difference between the two is greater than a certain threshold value, it is determined that a decrease in traction force has occurred, and the car is stopped urgently ( For example, refer to Patent Document 1). [0003] In addition, in other state monitoring devices in the...

Claims

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Application Information

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IPC IPC(8): B66B5/02B66B5/00B66B5/06B66B5/12
CPCB66B5/0037
Inventor 木川弘柴田益诚
Owner MITSUBISHI ELECTRIC CORP
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