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Elevator device

A technology for elevators and control devices, which is applied in transportation, packaging, elevators, etc., and can solve problems such as deviation of detection values, high cost, and poor accuracy

Inactive Publication Date: 2007-09-12
MITSUBISHI ELECTRIC CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In the above-mentioned conventional elevator device, a plurality of weighing devices are used, so the cost is high
In addition, due to the scattered detection locations, the detection value will be deviated due to the position of passengers in the car, etc., and the accuracy will deteriorate.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment approach 1

[0027] Fig. 1 is a configuration diagram showing an 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 means of a plurality of main cables 3, and are raised and lowered in the hoistway by the driving force of the winch 4. The hoist 4 includes: a drive pulley 5 around which the main rope 3 is wound; a motor 6 that rotates the drive pulley 5 ; and a brake 7 that frictionally brakes the rotation of the drive pulley 5 . The electric motor 6 and the brake 7 are controlled by a control device 8 .

[0028] The car 1 has: a car frame 9; a car chamber 10 supported by the car frame 9; A weighing device 12 for detecting the load in the car 1 is provided on the upper beam of the car frame 9 . The weighing device 12 generates a detection signal corresponding to the load in the car 1 . A detection signal from the weighing device 12 is input to the control device 8 .

[0029] FIG. 2 is a...

Embodiment approach 2

[0049] Next, Fig. 10 is a configuration diagram showing a main part of a weighing device of an elevator apparatus according to Embodiment 2 of the present invention. In the figure, the displacement member 41 abuts against the same detection plate 15 as in the first embodiment, and displaces in the vertical direction (axial direction) according to the change of the bearing load in the car 1 . A cylindrical iron core 41 a is attached to the displacement member 41 . A flange-shaped spring restricting portion 41 b is formed near the upper end portion of the displacement member 41 .

[0050] The iron core 41 a is disposed inside the outer frame 42 . The upper end portion of the displacement member 41 protrudes to the outside of the outer frame 42 . A preload spring 43 is provided between the upper portion of the outer frame 42 and the spring restricting portion 41b.

[0051] Inside the outer frame 42 are disposed a first transmitting coil 44 and a second transmitting coil 45 sur...

Embodiment approach 3

[0057] Next, Fig. 12 is a configuration diagram showing a main part of a weighing device of an elevator apparatus according to Embodiment 3 of the present invention. In the figure, the displacement member 51 abuts against the same detection plate 15 as in the first embodiment, and displaces in the vertical direction (axial direction) according to the change of the bearing load in the car 1 . A flange-shaped reflection plate 51 a is attached to the displacement member 51 . A flange-shaped spring restricting portion 51b is formed near the upper end portion of the displacement member 51 .

[0058] The reflection plate 51 a is disposed inside the outer frame 52 . Upper and lower end portions of the displacement member 51 protrude to the outside of the outer frame 52 . A preload spring 53 is provided between the upper portion of the outer frame 52 and the spring restricting portion 51b.

[0059] The outer frame 52 is fixed with: a first support plate 54 located above the reflect...

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PUM

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Abstract

An elevator device has a weighing device for detecting a load on the car. The weighing device has a displacement member displaced according to a change of the load in the car and displacement detection sections for detecting a displacement of the displacement member and outputting detection signals depending on the load. That is, the weighing device outputs a plurality of detection signals according to a mechanical displacement of the single displacement member.

Description

technical field [0001] The invention relates to an elevator installation having a weighing device for detecting the load carried in the car. Background technique [0002] In the conventional elevator apparatus, a plurality of weighing devices are installed between the lower portion of the car and the car frame. Then, by comparing the signals from the weighing device with the monitoring device, it is judged whether or not the weighing device is abnormal. When an abnormality is detected in the weighing device, an abnormality notification is performed by a notification unit (see, for example, Patent Document 1). [0003] Patent Document 1: Japanese Patent Application Laid-Open No. 6-234476 [0004] In the conventional elevator apparatus described above, a plurality of weighing devices are used, so the cost is high. In addition, since the detection locations are scattered, the detection value varies depending on the position of passengers in the car, etc., and the accuracy de...

Claims

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Application Information

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IPC IPC(8): B66B1/44B66B5/14B66B3/00
CPCB66B1/3484B66B1/14B66B1/24B66B5/00
Inventor 上田隆美木川弘冈田章
Owner MITSUBISHI ELECTRIC CORP