JPH11349237A - Elevator control device - Google Patents

Abstract

(57) [Summary] [PROBLEMS] To provide an elevator control device which does not bother passengers and does not lower the driving efficiency. SOLUTION: An overload avoiding device is installed in an elevator car, and even when overload is detected, the acceleration during elevator traveling is controlled by operating the overload avoiding device within a range of a reliable loading amount of various elevator devices. By suppressing the speed and the speed, traveling in an overloaded state is enabled.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an elevator controller, and more particularly to an elevator controller suitable for improving the operation efficiency of an elevator.

[0002]

2. Description of the Related Art In a conventional elevator control device, when a detected load for detecting a loaded load of a car exceeds a predetermined value, an alarm device provided in the car is operated to keep a door of the car open. An overload control device is provided to prevent passengers from getting on and to ensure safety due to overload during elevator traveling.

[0003]

In the conventional system, for example, when the overload control device is operated by the last one of the people who uses the elevator, the person cannot get into the elevator, and the elevator cannot be used again. Calling had to be performed, which was a factor in deteriorating driving efficiency. Also,
If the last person was a family member, the whole family would get off the elevator to go to the destination floor together, which would worsen the driving efficiency and the poor service that would bother the passengers. There was a problem that gave a certain impression.

[0004] It is an object of the present invention to provide an elevator control device which does not bother passengers and does not lower the driving efficiency.

[0005]

SUMMARY OF THE INVENTION In order to achieve the above object, the present invention provides a load detecting device for detecting a loaded load of a car ascending and descending in a hoistway at a predetermined acceleration and a rated speed.
An elevator including an overload control device that activates a notification device provided in the car when the load detected by the load detection device exceeds a predetermined value, and that keeps a door of the car open. In the control device, a first detection value and a second detection value which is a value exceeding the first detection value are set in advance for the load detected by the load detection device, and the first detection value An overload avoiding means that can avoid the operation of the overload control device; and an overload control device that operates the overload control device when the overload avoidance means is activated and the second detection value is exceeded. And a speed control means for moving the car up and down at an acceleration lower than the predetermined acceleration and at a speed lower than the rated speed by the operation of the overload avoidance means.

With this configuration, even when overloading is detected, the overload avoiding means is activated when the load detecting device is within the range of the reliable loading capacity of the elevator equipment exceeding the first detection value. By allowing the car to run at a speed lower than the rated speed and an acceleration lower than the predetermined acceleration, and when the load detection device exceeds the second detection value, the car is made impossible to run, thereby A small number of passengers getting off the car can be carried by elevator without bothering,
Does not reduce operating efficiency.

[0007]

DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described with reference to FIGS.

FIG. 1 is a block diagram of an elevator control apparatus to which the present invention can be applied. In this figure, a rope type elevator is shown. However, an elevator of a hydraulic type, a linear type or the like may be used. FIG. 2 shows the R according to the invention shown in FIG.
It is the figure which showed the speed / acceleration data table in OM simply. FIG. 3 is a diagram showing a flowchart in the present invention.

In FIG. 1, 1 is a car, 2 is a counterweight, 3 is a rope, 4a and 4b are sheaves, 5 is a motor, and 6 is a well-known inverter control device for controlling the motor 5. The load in the car of the elevator is detected by the load detecting device 7 attached to the car 1 and transmitted to the control unit 12 via the input device 11. When passengers get on and off the elevator car (step S1 in FIG. 3), when the load detected by the load detection device 7 does not exceed a first detection value that is set as overloading (step S2 in FIG. 3). FIG. 2 shows an MPU 12 a in the control unit 12.
The rated speed data (data D1a in FIG. 2) and the predetermined acceleration data (data D1b in FIG. 2) are selected from the speed data table and the acceleration data table preset in the ROM 12b shown in FIG.
2c (step S4 in FIG. 3). The MPU 12a performs speed control based on the rated speed and predetermined acceleration data selected in the RAM 12c, drives the inverter control device 6, controls the electric motor 5, and runs the elevator car (step S5 in FIG. 3). ). Next, as the passenger gets on and off the car (step S1 in FIG. 3), the detected load detected by the load detection device 7 exceeds a first detection value that is set as an overload (step S2 in FIG. 3). )
Then, the control unit 12 sends a command to the car control unit 8 via the output device 13 to activate the notifying device 9 and keep the car door 14 open (step S6 in FIG. 3). Here, reference numeral 10 in FIG. 1 denotes an overload avoiding device, which is not particularly limited to buttons, changeover switches, and the like. Control unit 12
Indicates that even when the overload is detected, the detected value does not exceed the reliable load amount within the range of the reliable load of the elevator devices that has exceeded the first detection value as the second detection value (step S8 in FIG. 3). , The overload avoiding device 10 installed in the car 1
(Step S7 in FIG. 3) to allow the elevator to run and stop the overload notification device (step S7 in FIG. 3).
9). In this case, the MPU 12a in the control unit 12 reads speed data lower than the rated speed (data D2a in FIG. 2) and acceleration data lower than the predetermined acceleration from a speed data table and an acceleration data table preset in the ROM 12b shown in FIG. (FIG. 2 data D2b) (FIG. 3
Step S10), the RAM 12c is selected (Step S4 in FIG. 3). The MPU 12a performs speed control based on speed data lower than the rated speed and acceleration data lower than a predetermined acceleration selected in the RAM 12c, drives the inverter control device 6, controls the electric motor 5, and runs the elevator car. (Step S5 in FIG. 3). However, the overload avoiding device 10 does not function when the load detected by the load detecting device 7 exceeds the second detection value (step S8 in FIG. 3),
The control unit 12 controls the car control unit 8 via the output device 13.
To operate the notification device 9 and keep the car door 14 open.

[0010]

According to the present invention, even when overloading is detected, if the load detecting device is within the range of the reliable loading capacity of the elevator equipment exceeding the first detection value, the overload avoiding means is provided. By allowing the car to run at a speed lower than the rated speed and an acceleration lower than the predetermined acceleration by operating, and when the load detection device exceeds the second detection value, the running is disabled, A small number of passengers who get off the car can be carried by the elevator without bothering them, and the driving efficiency is not reduced. However, lowering the acceleration and speed of the elevator causes a slight delay in the time to arrive at the destination floor as compared with normal driving, but the reduction in operating efficiency is significantly less than recalling the elevator again. Needless to say.

[Brief description of the drawings]

FIG. 1 is a configuration diagram of an elevator control device.

FIG. 2 is a simplified diagram of a speed / acceleration data table.

FIG. 3 is a flowchart according to the present invention.

[Explanation of symbols]

 7 Load detection device 9 Overload notification device 10 Overload avoidance device 12a MPU 12b ROM 12c RAM

Continued on the front page (72) Inventor Tomoyuki Isaka 5-23-14 Ueno, Taito-ku, Tokyo Hitachi Building Systems Co., Ltd. East Kanto Branch Office

Claims (2)

[Claims] A load detecting device for detecting a loaded load of a car ascending and descending in a hoistway at a predetermined acceleration and a rated speed; and when a detected load of the load detecting device exceeds a predetermined value,
While operating the notification device provided in the car,
An elevator control device including an overload control device configured to hold the door of the car in an open state, wherein a first detection value and a first detection value corresponding to a load detected by the load detection device are provided. A second detection value which is a value exceeding the value is set in advance, and the overload avoidance means for enabling the operation of the overload control device to be avoided by the first detection value, and the overload avoidance means is operated. When the second detection value is exceeded, the overload control transition means that operates the overload control device and the operation of the overload avoidance means, the acceleration lower than the predetermined acceleration and the rated speed A control device for an elevator, comprising: speed control means for raising and lowering the car at a low speed. 2. The elevator control apparatus according to claim 1, wherein said speed suppressing means is capable of selecting at least one acceleration and speed in addition to said predetermined acceleration and said rated speed.