Elevator control system

A technology of elevator control and elevator car, which is applied in elevators, transportation and packaging, and can solve the problems of increased capacity, complicated reading methods, and large time-consuming

Active Publication Date: 2013-03-27
HITACHI LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0013] In Patent Document 3, since the storey height values ​​in both the ascending direction and the descending direction are stored in the storage device, in addition to increasing the capacity, the reading method will be complicated
In addition, it takes a lot of time to reciprocate in a high-lift elevator

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] figure 1 It is a schematic diagram of the control system of the elevator in the first embodiment of the present invention. As shown in the drawing, a hoist 2 including a drive motor for raising and lowering the elevator car 1, and a control device 3 for controlling the drive of the hoist 2 are provided. Normally, the speed control of the drive motor is performed by comparing the speed command of the elevator with the output of the rotary encoder 21 for detecting the rotational speed of the hoist 2 .

[0036] As a safety device of the elevator terminal floor, a limit switch 4 outputting a stop command for limiting the descent of the elevator car 1 and a final limit switch 5 arranged below the limit switch 4 are provided.

[0037] For maintenance operation, a connector is provided inside the elevator car 1, to which the controller 6 can be connected and also detached. When performing maintenance operation, after the maintenance personnel connect the controller 6 to the...

Embodiment 2

[0054] Figure 7 is a processing flowchart of the second embodiment of the present invention. The focus of the second embodiment is the final limit switch 5 . Usually, the final limit switch 5 is a safety device provided in order to deal with the situation that the elevator car greatly exceeds the parking position due to a major failure during normal operation. Therefore, when the final limit switch 5 is set to act on it, the power supply to the main circuit of the power conversion device is cut off to stop the power supply to the winch, and it is forbidden to restart and reset in an automatic operation mode.

[0055] The second embodiment is when the elevator with high lift descends and stops towards the bottom floor during maintenance operation, although the first embodiment is adopted, unfortunately it is still a safety measure when the final limit switch 5 is actuated.

[0056] First, in step 71, when the operation of the final limit switch 5 is detected, in step 72, the...

Embodiment 3

[0059] Figure 8 is a processing flowchart of the third embodiment of the present invention. The focus of the third embodiment is story height measurement. The floor height measurement is an operation performed to store the elevation value of each floor from the standard floor in the built-in storage device of the control device 3 .

[0060] For example, if figure 1 As shown, the elevator car 1 is raised from the standard floor (for example, the bottom limit switch), and the position detector 8 detects the number of pulses when passing through the shielding plates 71-7n, thereby grasping the parking position of each floor. In this way, the floor height values ​​of the shielding panels 71 - 7n of all floors up to the highest floor are stored. Usually, floor height measurement is performed at the time of commissioning before building completion, and the operation of the elevator car 1 at this time is performed at a low speed as in the low-speed operation of the first embodim...

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PUM

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Abstract

The invention provides an elevator control system associated with maintaining operation of a high-lift elevator, capable of well exerting stopping action near the bottom layer and high-layer testing operation according to the elevator control system. In the maintaining operation of a high-lift elevator, the maintaining operation speed (low-speed operation speed) is reduced from current 30m every minute to 15m every minute when it drops toward the bottom layer and when the elevator carrier exceeds the bottom layer to reach a limit switch (4). According to a preferable exertion mode of the invention, a final limit switch (5) may be prevented from action caused by damped oscillation of the elevator carrier via ladder variable of a speed indication and the maintaining time may be shortened when the high-lift elevator is in maintenance.

Description

Technical field [0001] The invention involves an elevator control system, especially the maintenance operation of a high -rise elevator in the high -rise building. Background technique [0002] In the past, when the elevator was maintained, the operators used the controller to raise the elevator car to rise and fall.The driving speed during maintenance is lower at a low constant speed of about 15m / minute to 30m / min. Compared with the rated speed of normal runtime, it is very low.The elevator stops at any place such as the middle part of the floor and the floor.The driver speed during maintenance is called low -speed operation speed. [0003] On the other hand, in addition to the deceleration during maintenance and runtime, the following compulsory deceleration methods are made in the terminal floor of the elevator of patent literature 1 and patent literature 2 open.The detection speed near the terminal floor (the highest level or the bottom) is detected by the detected speed when...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B66B5/10B66B5/06B66B5/02
Inventor 三田史明岸川孝生大沼直人迫田友治蛭田清玄保立尚史稻叶博美绫野秀树森和久
Owner HITACHI LTD
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