JP2015009919A - Elevator lifting control method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a novel lifting control method which solves problems that, for example, when lifting distance of a minute unit is controlled, repeating work of pushing a lifting key or a descent key on an operation board is required, resulting in low operability and low adjustment accuracy of the lifting distance in low speed operation of an elevator during installation and maintenance inspection of the elevator.SOLUTION: Provided is the lifting control method for performing position adjustment of a car of an elevator by adjusting lifting distance required for the position adjustment by combination of pushing an operation key on an operation board for equal to or less than reference time, and pushing the operation key for more than the reference time in floor position adjustment work of the car to respective floors in installation or maintenance inspection of the elevator. In addition, distance for moving the car is displayed on a display device in a machinery room or in the car.

Description

  The present invention relates to an operation control method in low-speed operation in elevator installation and inspection / maintenance work.

  In the conventional technology, in the case of low-speed operation in elevator installation work or inspection / maintenance work, if it is necessary to adjust the movement by a small distance such as work to adjust the floor height of the car floor to the landing floor, The floor height was adjusted by repeatedly pressing the down key for a very short time.

  For example, Cited Document 1 discloses an elevator control device that makes it possible to accurately and easily perform lift distance control during elevator operation on a passenger car. In Cited Document 1, in an elevator control device that controls the lift distance of an elevator by a control panel based on switch operation of a lift button and a drop button of a maintenance operation switch provided on an elevator car, the maintenance operation switch , An inching switch for instructing the minute movement operation mode and a level adjustment switch for instructing the level adjustment operation mode are provided, and the control panel is operated in the direction of operation by the up button or the down button based on the instruction of each operation mode. Control means is provided for controlling the movement of the car in a minute distance or at a low speed according to the command.

  6-8, the hoisting machine 20 having the brake 21, the elevating motor 22, and the hoisting pulley 23 is controlled by the control panel 11 having the power source 10 and the elevating control circuit 12. The weight 14 suspended via the rope 13 and the car 15 having the car control panel 16 inside are driven. F is the floor.

  Here, during the elevator installation work and maintenance inspection work, the maintenance operation panel 1 shown in FIG. 7 is connected to the control panel of the machine room or the car operation panel 16 by the connection cord 4 or the like, and the control panel or the like is connected. The mode is switched to the maintenance mode, and the ascending key 2 is pressed to perform the low-speed ascending operation, or the descending key 3 is pressed to perform the low-speed descending operation, and the lifting operation is performed to adjust the floor position with respect to each floor of the car.

  Alternatively, as shown in FIG. 8, the car operation panel 16 is switched to the maintenance mode, and the top floor key 18 is pressed to perform a low speed up operation, or the bottom floor key 19 is pressed to perform a low speed down operation. Reference numeral 17 denotes a display, and 20 denotes a door opening / closing key.

  The actual lifting distance of the car by the above key operation varies depending on the experience value of the operator and the conditions of the elevator, so depending on the conditions, extra work time is required, and the elevator is continuously operated at a low speed for a short time. Repeating causes mechanical wear of a device such as a hoist and electrical deterioration such as continuous energization of the semiconductor device in a short time.

JP-A-8-26607

  In the elevator installation work, especially the car floor and the landing floor height are matched, and the stop position is determined for each floor. In the installation work of the shielding board, etc., the low-speed operation is repeated to match the floor height. Work occurs. At this time, it is common to repeatedly press a key for instructing an ascending operation or a descending operation for low-speed operation for a very short time. There is a difference in the floor alignment by this work depending on the experience value of the worker.

  Moreover, since a difference arises with an elevator hoist, a car load, a hoistway height, and a control device, uniform work cannot be performed. That is, in normal low-speed operation, the car position is moved only for the time when the up key or the down key is pressed, but it cannot be generally said that a lift distance proportional to the pressed time is obtained. That is, it varies depending on the condition of the elevator, that is, the hoisting machine, the car loading capacity, the hoistway height, and the control device (control panel), and the normal ascending key or descending key is pressed and released during the entire period. There is no movement of the car over many elevators. Many elevators press the keys and the control panel prepares to start the elevator. A control voltage by the inverter is applied to the drive motor directly connected to the hoisting machine. A time lag occurs because control to release the brake of the upper machine is executed.

  Therefore, in actuality, the car moves only for a time shorter than the time when the key is pressed, and this time differs for each elevator, so that it is difficult to move the lifting distance in minute units accurately.

  Further, when work on each floor is required, a considerable amount of work is required particularly in an elevator with a large number of floors.

  The present invention relates to a lift control method for an elevator which operates an operation key of an operation panel and performs lift control by a hoisting machine so that the stop position of the car is matched with an arbitrary floor using a lift control circuit. A continuous operation mode that continuously drives the car and a constant-length operation mode that drives the car at fixed distances, and switches between the continuous operation mode and the constant-length operation mode according to the pressing time of the operation key on the operation panel. It is characterized by.

  The present invention relates to a lift control method for an elevator which operates an operation key of an operation panel and performs lift control by a hoisting machine so that the stop position of the car is matched with an arbitrary floor using a lift control circuit. A continuous operation mode that continuously drives the car and a constant-length operation mode that drives the car at fixed distances, and switches between the continuous operation mode and the constant-length operation mode according to the pressing time of the operation key on the operation panel. This makes it possible to reduce the time required to adjust the car and reduce the time required to adjust the elevator by performing simple operations without adding hardware. The variation in efficiency can be made uniform.

The schematic diagram which shows the whole structure of the elevator in the Example of this invention. The circuit diagram which shows the raising / lowering control circuit in the Example of this invention. The circuit diagram which shows the fixed length operation mode control circuit in the Example of this invention. The circuit diagram which shows the continuous operation mode control circuit in the Example of this invention. The schematic diagram which shows the car operating panel in the Example of this invention. The schematic diagram which shows the whole structure of the elevator of a prior art example. The schematic diagram which shows the operation panel for the maintenance of the elevator of a prior art example. The schematic diagram which shows the elevator car operating panel of a prior art example.

  Embodiments of the present invention will be described below with reference to the drawings.

  FIG. 1 is a schematic diagram showing the overall configuration of an elevator according to the present invention. The basic configuration of FIG. 1 is common to the elevator of the conventional example shown in FIG. 6, and is different in that a new lift control circuit 12A is provided.

  FIG. 2 is a circuit diagram showing the elevation control circuit 12A in the embodiment of the present invention. In FIG. 2, the elevation control circuit 12A selects an operation mode by an operation time detection circuit 110, a reference time storage circuit 120 that gives a reference time to the operation time detection circuit 110, and a key operation signal detected by the operation time detection circuit 110. An operation mode selection circuit 130 that performs selection, and a continuous operation mode control circuit 140 and a constant length operation mode control circuit 150 that are selected by the operation mode selection circuit 130 and output a hoisting machine drive signal.

  The control method proposed in the present embodiment uses, for example, the maintenance operation panel 1 shown in FIG. 7 of the conventional example, and distinguishes the length of the pressing time of the ascending key 2 or the descending key 3 with respect to the reference time. When the operation key is pressed for a very short time, it is switched to the fixed length operation mode, and then the operation key is pressed more than the reference time, so that only the ascending / descending distance according to the number of times the operation key is pressed below the reference time The elevator operation for moving the car up or down in the direction indicated by the operation key is executed.

  For example, when the up / down control circuit recognizes that the ascending key 2 has been pressed five times consecutively below the reference time and immediately after that the ascending key 2 has been pressed above the reference time, the key operation below the reference time When the car unit ascending / descending distance at 1 mm is set to 1 mm, the car is moved and moved at a low speed by 5 mm according to the formula (1) and stopped.

Car unit lift distance x number of operation key presses = car lift distance (1)
The unit ascending / descending distance can be freely set such as 1 mm or 0.5 mm. This control method can be executed by an encoder installed in an elevator hoist or the like, a minute unit elevation control by a microcomputer and software in a control panel, and a hoist motor control by an inverter.

  FIG. 3 is a circuit diagram showing the constant length operation mode control circuit 150 in the embodiment of the present invention. FIG. 4 is a circuit diagram showing the continuous operation mode control circuit 140 in the embodiment of the present invention.

  In FIG. 3, the constant length operation mode control circuit 150 includes a key operation number detection circuit 151 that accepts an operation key input signal of the operation panel, an up / down direction detection circuit 152, and a unit up / down distance of the car 15 by one key operation. Is stored in a unit lift distance storage circuit 153 and a lift distance calculation circuit 154 for calculating the lift distance of the car. When the constant length operation mode is selected by the operation mode selection circuit 130, the constant length operation mode control circuit 150 detects the number of key operations equal to or less than the reference time by the key operation number detection circuit 151, and at the same time the lift direction detection circuit 152 Detects the up / down direction of the operation key. Next, using the unit lift distance of the car 15 stored in the unit lift distance storage circuit 153, the lift distance calculation circuit 154 calculates the lift distance of the car 15 according to the equation (1), and drives the hoisting machine 20. To do.

  As an additional function, when the lifting distance is set by the ascending key 2, when the lifting distance is subtracted, the descending key 3 may be reduced according to the number of times the key is pressed below the reference time. it can.

  In addition to the above-described constant length operation mode, it is naturally necessary to perform a low speed operation of several tens of millimeters and several hundreds of millimeters or more in the conventional continuous operation mode using the continuous operation mode control circuit 140 shown in FIG. This case can be dealt with by performing a conventional operation of pressing the key for a reference time or more from the beginning and releasing the operation key when the necessary distance is reached.

  In FIG. 4, the continuous operation mode control circuit 140 includes a key operation time detection circuit 141 and a lift distance calculation circuit 142. The key operation time detection circuit 141 detects the pressing time of the operation key, and the elevator distance calculation circuit 142 calculates the elevator up / down distance in proportion to this, and the elevator car 15 is raised and lowered.

  The operations in the continuous operation mode and the constant length operation mode can be performed using a car operation panel 16 shown in FIG. 5 instead of the maintenance operation panel shown in FIG. After switching to the maintenance mode, the top floor operation key 18 of the car operation panel 16 can be used as an up key, and the bottom floor key 19 can be used as a down key.

With the above configuration, the present invention can add control of the lift distance in minute units without newly adding hardware such as operation keys and without impairing the operability of conventional continuous low-speed driving. Therefore, it is particularly useful at the initial stage of construction, such as during installation, and maintenance inspection work that requires simple operation.
[Other application examples]
In addition, each control panel or car is equipped with various display devices such as segments, indicators, and liquid crystal. By displaying the lift distance of the car on the display device, low-speed operation in the machine room and the car is possible. This is useful when implementing the control method. In other words, as shown in FIG. 5, by displaying the distance designation by pressing the key for an extremely short time below the reference time on the display 17A, the operator performs the adjustment work while checking the lift distance of the car. can do.

1: Maintenance operation panel 2: Up key 3: Down key 10: Power supply 11: Control panel 12A: Lift control circuit 15: Car 16: Car operation panel 17: Display 18: Top floor key 19: Bottom floor key 20: Hoisting machine 22: Lifting motor 110: Operation time detection circuit 120: Reference time storage circuit 130: Operation mode selection circuit 140: Continuous operation mode control circuit 150: Constant length operation mode control circuit 151 1: Key operation number detection circuit 152 : Lifting direction detection circuit 153: Unit lifting distance storage circuit 154: Lifting distance calculation circuit

Claims (11)

In the elevator control method for operating the operation keys on the operation panel and controlling the elevator so that the stop position of the car coincides with an arbitrary floor by the hoisting machine using the elevator control circuit,
The elevating control method has a continuous operation mode in which the car is continuously driven and a constant length operation mode in which the car is driven at a certain distance, and according to the pressing time of the operation key on the operation panel. The elevator elevating control method is characterized by switching between the continuous operation mode and the constant length operation mode.   The elevator lifting / lowering control method according to claim 1, wherein when the time of pressing an operation key on the operation panel is equal to or shorter than a reference time, the elevator lifting / lowering control method is switched to the constant length operation mode.   3. The elevator elevation control method according to claim 1, wherein the elevation control circuit has data on a preset unit elevation distance of the car, and a pressing time of the operation key is equal to or less than a reference time. A lift control method for an elevator, wherein the lift is controlled according to the product of the number of times and the unit lift distance.   The elevator lift control method according to claim 3, wherein the operation key is pressed below the reference time to calculate the product of the number of times that the operation key is pressed down below a reference time and the unit lift distance. The elevator elevation control method, which is executed when the vehicle is continuously pressed after the reference time.   The elevator elevation control method according to claim 1, wherein when the operation key is pressed for a time equal to or longer than the reference time, the elevator operation control method is switched to the continuous operation mode.   6. The elevator lift control method according to claim 5, wherein the lift distance in the continuous operation mode is calculated in accordance with a pressing time of the operation key.   The elevator control method according to any one of claims 1 to 6, wherein the operation panel uses a maintenance operation panel having an operation key provided separately from the elevator. Lift control method.   8. The elevator lifting / lowering control method according to claim 7, wherein the maintenance operation panel displays a lifting distance of the car on a display provided in the elevator.   The elevator control method according to any one of claims 1 to 6, wherein the operation panel is a car operation panel having operation keys provided in a car of the elevator. Lift control method.   10. The elevator elevation control method according to claim 9, wherein the car operation panel has a display, and an elevator elevation distance is displayed on the display.   The elevator lift control method according to any one of claims 1 to 10, wherein an output signal of an operation key of the operation panel returns to an initial state after a lapse of a reference time after the operation of the operation panel is completed. Elevator lift control method.

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