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Elevator system

A technology for elevators and light-emitting devices, which is applied in the directions of transportation, packaging, and elevators. It can solve the problems of substantially higher car heights and increased dimensions at the top of the well, achieving the effect of reducing height dimensions and preventing height dimensions from increasing.

Inactive Publication Date: 2011-10-26
MITSUBISHI ELECTRIC CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, the substantial height of the car becomes higher and the top dimension of the hoistway increases

Method used

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  • Elevator system
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Examples

Experimental program
Comparison scheme
Effect test

Embodiment approach 1

[0019] figure 1 It is a longitudinal sectional view showing the elevator apparatus according to Embodiment 1 of the present invention. also, figure 2 is along figure 1 Sectional view of line II-II. In the drawing, a car 2 and a counterweight 3 that are movable (up and down) vertically are provided in a hoistway 1 . Each floor is provided with a hall entrance 5 that communicates with the hall 4 in the hoistway 1 , and a hall door (not shown) that opens and closes the hall entrance 5 .

[0020] On the top of the hoistway 1, a top unit 6 in which various devices are unitized is installed. The top unit 6 has an installation frame 7 arranged horizontally, and a traction machine (drive device) 8 and a plurality of driven sheaves (not shown) respectively provided on the installation frame 7 . The hoisting machine 8 and each driven sheave are arranged at individually determined positions (predetermined positions).

[0021] The hoisting machine 8 has a drive sheave (not shown) t...

Embodiment approach 2

[0051] image 3 It is a longitudinal sectional view showing an elevator apparatus according to Embodiment 2 of the present invention. In the drawing, a CCD camera (image recognition device) 21 is provided as a light receiving device on the top of the hoistway 1 . The CCD camera 21 can detect light from each of the light emitting devices 9a to 9c as an image. Thereby, the light from each light emitting device 9a-9c is detected by the common CCD camera 21, respectively. Image information detected by the CCD camera 21 is sent to the control device 12 . In addition, in this example, the CCD camera 21 is installed on the hoisting machine 8 .

[0052] The control device 12 controls switching from the normal operation mode to the inspection operation mode based on image information from the CCD camera 21 . That is, the control device 12 controls switching from the normal operation mode to the inspection operation mode by comparing the image information from the CCD camera 21 with...

Embodiment approach 3

[0056] Figure 4 It is a longitudinal sectional view showing an elevator apparatus according to Embodiment 3 of the present invention. In the figure, a light emitting device 31 is provided on the upper portion of the car 2 . The light emitting device 31 has a line light source that emits light linearly toward the CCD camera 21 . The line light source of the light emitting device 31 extends in the horizontal direction. As the line light source of the light emitting device 31 , for example, a plurality of LEDs arranged in series in a line can be cited. The line light source can be either linear or curved.

[0057] The CCD camera 21 can detect light from the light emitting device 31 as an image. Image information detected by the CCD camera 21 is sent to the control device 12 .

[0058] The control device 12 controls switching from the normal operation mode to the inspection operation mode by comparing the image information from the CCD camera 21 with preset setting reference...

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PUM

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Abstract

A light-emitting device for emitting light is provided to any one of a top of a hoistway and an upper part of a car, and a light-receiving device for receiving the light from the light-emitting device is provided to another one of the top of the hoistway and the upper part of the car. A controller for controlling an operation of an elevator is capable of switching an operation mode of the elevator between a normal operation mode for moving the car at normal speed and an inspection operation mode for moving the car at a speed lower than the normal speed. The controller performs switching from the normal operation mode to the inspection operation mode when detection of light reception by the light-receiving device is stopped.

Description

technical field [0001] The present invention relates to an elevator apparatus having a car that can be raised and lowered in a hoistway. Background technique [0002] In the past, the following elevator maintenance safety device has been proposed: it has a load weight detection part that detects the load weight of the car, and a car door passing detection part that detects the situation of passing through the entrance of the open car door. The device detects whether maintenance personnel are above the car based on the respective information from the load weight detection unit and the car door passage detection unit. In this conventional elevator maintenance safety device, when the load weight detection unit detects an increase in the load weight of the car, and the car door passing detection unit does not detect passage, it is detected that the maintenance person is above the car, Thereby, normal operation of an elevator is prohibited (refer patent document 1). [0003] In...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B66B5/00
CPCB66B5/0062B66B1/28B66B5/00
Inventor 安江正德
Owner MITSUBISHI ELECTRIC CORP