JPH07252045A - Elevator control device - Google Patents

Abstract

PURPOSE:To automatically adjust a variety of clearance within reference values without requiring maintenance personnel for measurement and without stopping an elevator for a long time by automatically measuring whether or not the clearances of a counter weight, a rope stretching pulley for a speed governor and a balancing rope pulley are within reference values and automatically adjusting the length of the ropes. CONSTITUTION:When the clearance of the counter weight 3 which is suspended by a hoist rope 5 together with an elevator car 2 is an upper limit value, lower limit value, or within a reference value is measured by a cam 12 and a switch 13. Based on the measuring result, the hoist rope 5 is wound or unwound to adjust the counter clearance within the reference value.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an elevator control device, and more particularly to measuring a state inside a pit such as a counter clearance and winding a hoisting rope on the basis of the measured state to adjust an elevator counter clearance and the like. Related to the device.

[0002]

2. Description of the Related Art Generally, an elevator car is suspended by a hoisting rope, but the counter clearance changes as the rope expands and contracts. This counter clearance is very important in an elevator to prevent a trapping accident and idling of the hoisting motor, and it is an important maintenance item to measure it and keep it within the reference value. .

Conventionally, in order to measure whether or not the counter clearance is within a reference value, two maintenance personnel, an operator of an elevator car and a measurer who measures the counter clearance in a pit, are required. Met. Also,
When the counter clearance is below the lower limit of the reference value, it is necessary to stop the elevator for a long time, cut down the hoisting rope, and adjust the counter clearance.

FIG. 14 is a schematic configuration diagram of such a conventional elevator control device, and particularly shows the structure of a 2: 1 roping elevator. In the figure, 1 is a hoistway, 2 is suspended by a hoisting rope 5, and
A car 3 that is lifted up and down is hung by a hoisting rope 5, and a counter that acts as a counterweight on the car 2 is a hoisting machine that hoists the car 2 and the counter 3 through the hoisting rope 5. A control board, 7 is a hoistway ceiling, 8 is a counter-side shock absorber, 9 is a hoisting rope end on the car 2 side, and 10 is a hoisting rope end on the counter 3 side.

The operation of the above-described structure will be described below.

When the car 2 is moved up and down in the hoistway 1, the hoisting machine 4 is operated by a command from the control panel 6, and the hoisting rope 5 is hoisted or lowered to thereby move the car 2 and the counter 3 together. It is performed by moving up and down in the hoistway 1 in opposite directions.

During operation of the elevator, the hoisting rope 5 may expand due to the weights of the car 2 and the counter 3, or the hoisting rope 5 may contract due to some cause.

When the hoisting rope 5 is stretched, the car 2
Before the vehicle stops at the top floor, the counter 3 collides with the counter-side shock absorber 8 and stops, causing a trapping accident. In this case, since the hoisting rope 5 does not issue a stop command from the deflection control board 6, the hoisting machine 4 will idle.

On the other hand, when the hoisting rope 5 contracts,
Before the car 2 stops at the bottom floor, the counter 3 collides with the hoistway ceiling 7 and stops, and a trapping accident occurs also here. In this case as well, the hoisting machine 4 will idle because no stop command is issued from the control panel 6.

Therefore, it is necessary to measure and adjust the counter clearance in order to prevent the above-mentioned trapping accident and idling of the hoisting machine 4.

On the other hand, in the elevator pit, there may be a case where a speed governor rope tensioning vehicle suspended on a speed governor rope, a balance rope vehicle suspended on a balance rope, etc. are provided. It is also necessary to adjust the clearance.

[0012]

Since the conventional elevator controller is constructed as described above, it is necessary to measure and adjust the counter clearance, which depends on the work of the maintenance personnel.

This work needs to be performed while one maintenance staff enters the pit and another maintenance staff moves up and down in the car 2. In this case, since the place is separated between the pit and the car 2, it is difficult to communicate with each other.

When adjusting the counter clearance, the elevator is stopped for a long time, the car 2 and the counter 3 are lifted, and then the hoisting rope 5 is cut down.
You need to stretch it. In that case, remove the hoisting rope end 9 on the car 2 to adjust the length.
The car 2 may fall.

On the other hand, in the case where a speed governor rope tensioning vehicle suspended on a speed governor rope, a balance rope vehicle suspended on a balance rope, etc. are provided in the elevator pit, the same applies. There is a similar problem in measuring and adjusting the clearance.

The present invention solves the above-mentioned problems of the prior art and automatically measures whether or not the clearance of a counterweight, a governor rope tensioning vehicle, a balancing rope vehicle, etc. is within a reference value. However, by automatically adjusting the rope length based on this, maintenance personnel for clearance measurement are not required, and various clearances are automatically adjusted to the standard values without stopping the elevator operation for a long time. An object of the present invention is to provide an elevator control device that can be adjusted inside.

[0017]

In order to achieve the above object, the elevator control apparatus according to claim 1 of the present invention has an upper limit value for clearance of a counterweight suspended on a hoisting rope together with an elevator car. Lower limit,
Counter clearance measuring means for measuring whether it is within a reference value, and adjusting means for adjusting the counter clearance within the reference value by hoisting or rewinding the hoisting rope based on the measurement result of the measuring means. , Is provided.

Further, the elevator control apparatus according to a second aspect of the present invention is a clearance measurement for measuring at least one clearance of a counterweight, a speed governor rope tensioning vehicle, and a balancing rope vehicle, which is suspended on a hoisting rope together with an elevator car. Means, rope winding means provided at at least one end of the hoisting rope, speed governor rope, and balance rope, and the counterweight and speed governor rope tensioning vehicle based on the output of the measuring means. A control means for detecting when at least one clearance of the balance rope vehicle deviates from a reference value, driving the rope winding means, and adjusting each clearance within the reference value. Equipped with.

[0019]

The present invention is configured as described above, and the elevator control apparatus according to claim 1 measures the clearance of the counterweight suspended on the hoisting rope together with the elevator car by the counter clearance measuring means, and this is the upper limit value. Depending on whether it is within the lower limit value or the reference value, the hoisting rope is hoisted and rewound through the adjusting means.
Adjust the counter clearance to within the standard value.

Further, in the elevator controller according to the second aspect of the present invention, the counterweight suspended by the clearance measuring means together with the elevator car on the hoisting rope,
Measure the clearance of the speed governor rope tensioning car, the balance rope car, etc. Based on this measurement result, if these deviate from the standard values, the hoisting rope, speed governor rope, balance The rope winding means provided at the end of the rope or the like is driven to adjust the clearance of each to within the reference value.

[0021]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of the present invention will be described below with reference to the drawings.

Example 1. First Embodiment FIG. 1 is a schematic configuration diagram of an elevator control device according to a first embodiment of the present invention. In the figure,
Reference numeral 11 is a winding drum type hoisting rope winding device for hoisting the hoistway ceiling 7 side end of the hoisting rope 5 on the counter 3 side, 12 is a cam attached to the counter 3 for measuring the counter clearance, and 13 is a cam 12 It is a contact movable type switch unit that contacts with and measures the upper and lower limits and the reference value of the counter clearance.

FIG. 2 is a front view of the hoisting rope winding device 11 in the configuration of FIG. 1, FIG. 3 is a top view of the hoisting rope winding device 11, and FIG. 4 is a line AA of FIG. 5 is a sectional view taken along line BB in FIG. 3.

In each drawing, 11a is a winding drum for winding the hoisting rope 5, and 11b is a winding drum 11a.
Drive device with a built-in gear mechanism for rotating
1c is a plunger that regulates and holds the movement of the winding drum 11a when the winding rope 5 is not being wound, 11d is a releasing device for releasing the plunger 11c, and 11e is a suction device for the plunger 11c. For exciting the coil, 11f is a spring for restoring the plunger 11c, 11g is a hole in the take-up drum 11a, the rotation of which is restricted when the plunger 11c is inserted, and 11h drives the driving device 11b. Is an electric motor for.

FIG. 6 is a side view showing the details of the counter clearance measuring section composed of the cam 12 and the switch unit 13 in the configuration of FIG. In the figure, 13a is an upper limit detection switch that is operated by the cam 12 when the counter 3 reaches the upper limit of the counter clearance and detects this, and 13b is a cam when the counter 3 is within the reference value of the counter clearance. A reference detection switch operated by 12 to detect the switch 13c is a lower limit detection switch operated by the cam 12 to detect the counter 3 when the counter 3 reaches the lower limit of the counter clearance.

Next, the operation of the above-described structure will be described with reference to the flowchart of FIG.

First, in step S1, it is determined in the control panel 6 whether or not the elevator is in operation. If the elevator is in operation, the process proceeds to step S2. If not, the process ends.

In the next step S2, it is determined in the control panel 6 whether or not the elevator car 2 is stopped at the uppermost floor, and if it is stopped at the uppermost floor, the process proceeds to step S3. Return to S1.

In the next step S3, it is judged whether or not the counter clearance lower limit detection switch 13c is operating. If it is operating, the process proceeds to step S4, and if it is not operating, the process proceeds to step S9.

In step S4, in response to a command from the control panel 6, the exciting coil 11e for attracting the plunger 11c in the releasing device 11d is excited, the plunger 11c is attracted, and it is ejected from the hole 11g in the winding drum 11a. And the holder of the hoisting rope winding device 11 is released.

Next, in step S5, the control panel 6
In response to a command from the motor, the electric motor 11h is rotated, the driving device 11b is driven, the winding drum 11a is rotated to wind the hoisting rope 5, and the process proceeds to step S6.

In step S6, it is judged whether or not the in-reference detection switch 13b is operating, that is, whether or not the counter clearance is within the reference value. If it is not within the reference value, the process returns to step S5. , Continue winding the hoisting rope 5. On the other hand, if it is determined that the counter clearance detection switch 13b operates and the counter clearance is within the reference value, the process proceeds to the next step S7, the rotation of the winding drum 11a is stopped, and the hoisting rope 5 moves. To stop winding.

In the next step S08, the exciting coil 11 for attracting the plunger 11c is instructed by the command from the control panel 6.
Turn off the excitation of e. As a result, the plunger 11c is restored by the force of the spring 11f, and the winding drum 1
It is inserted into the hole 11g provided in 1a, and thereby the holder of the hoisting rope winding device 11 is mounted.

On the other hand, in step S3, if the counter clearance lower limit detection switch 13c is not operating, the process proceeds to step S9. In step S9, whether the counter clearance upper limit detection switch 13a is operating, that is, It is determined whether the counter clearance is the upper limit value. Here, if it is determined that it is not the upper limit value, the process returns to step S1. On the other hand, if it is determined to be the upper limit value, the process proceeds to step S10.

In step S10, in response to a command from the control panel 6, the exciting coil 11e for attracting the plunger 11c in the releasing device 11d is excited, the plunger 11c is attracted, and this is pulled from the hole 11g in the winding drum 11a. And the holder of the hoisting rope winding device 11 is released.

Next, in step S11, the electric motor 11h is rotated by a command from the control panel 6, the driving device 11b is driven, the winding drum 11a is rotated, and the hoist rope 5 is rewound. Control goes to step S12.

In step S12, it is judged whether or not the in-reference detection switch 13b is operating, that is, whether the counter clearance is within the reference value. If it is not within the reference value, the process returns to step S11. , Hoisting rope 5
Continue rewinding. On the other hand, the switch 13b for detecting within the reference
If it is determined that the counter clearance is within the reference value, the process proceeds to the next step S13, the rotation of the winding drum 11a is stopped, and the rewinding of the hoisting rope 5 is stopped.

At the next step S14, the exciting coil 11 for attracting the plunger 11c is instructed by the control panel 6.
Turn off the excitation of e. As a result, the plunger 11c is restored by the force of the spring 11f, and the winding drum 1
It is inserted into the hole 11g provided in 1a, and thereby the holder of the hoisting rope winding device 11 is mounted.

Through the above-mentioned operations, the operation of the hoisting rope winding device 11 is normally restricted by the engagement of the plunger 11c and the hole 11g of the winding drum 11a, and the hoisting rope 5 does not work. Safety precautions have been taken to prevent it from being unwound easily.

On the other hand, when the counter clearance reaches the upper limit value or the lower limit value due to the relationship between the cam 12 and the switch unit 13, the holder of the hoisting rope winding device 11 is released, and the hoisting rope winding device is released. Since the counter clearance is adjusted until the counter clearance is within the reference value by winding and unwinding the hoisting rope 5 by 11, the hoisting rope 5 for maintenance work and adjustment of the counter clearance by maintenance personnel. No need to truncate.

In the first embodiment, to determine whether the counter clearance is the upper limit value, the lower limit value, or within the reference value,
Although the counter clearance measuring unit formed by the combination of the cam 12 and the counter 3 is used, as shown in the side view of FIG. 8, the counter clearance measuring magnet 14 and the proximity switch unit 15 provided in the counter 3 are combined and contactless. You may make it detect these. By the way,
In FIG. 8, 15a is a proximity switch 15a for detecting the upper limit value of the counter clearance, which operates when the counter clearance measuring magnet 14 is approached, and 15b is a counter clearance which operates when the counter clearance measuring magnet 14 is approached. A reference value detection proximity switch 15c is a counter clearance lower limit value detection proximity switch 15c which operates when the counter clearance measurement magnet 14 is approached.

According to the configuration of FIG. 8, the proximity switch unit 15 can determine whether the counter clearance of the counter 3 is within the upper limit value, the lower limit value or within the reference value without contact.
The reliability is high, there is no malfunction due to a switch shaft sticking like a mechanical switch, and collision noise at the time of contact can be eliminated.

As shown in the side view of the counter clearance measuring section in FIG. 9, a differential transformer is used to determine the upper limit value, the lower limit value and the reference value of the counter 3 in a non-contact manner. Is also applicable. In the figure, 17 is a differential transformer, and 16 is a core of the differential transformer 17 provided on the counter 3 side.

In the configuration as described above, the differential transformer 17 changes continuously depending on the insertion degree of the differential transformer core 16. Therefore, since an output corresponding to the counter clearance of the counter 3 is obtained from the differential transformer 17, the counter clearance of the counter 3 can be set and adjusted to an arbitrary amount.

In the configuration shown in FIG. 9, the counter clearance of the counter 3 can be measured in a non-contact manner, so that the counter clearance is highly reliable and the analog output allows the counter clearance to be precisely measured.

Example 2. FIG. 10 shows a second embodiment of the present invention.
2 is a schematic configuration diagram of the elevator control device of FIG.
This is an example of application to a roping configuration.

As shown in the figure, the hoisting rope winding device 11 is provided on the car 2. As a result, cam 1
Based on the counter clearance of the counter 3 detected by 2 and the switch unit 13, the hoisting rope winding device 11 can be operated and the counter clearance of the counter 3 can be adjusted.

Example 3. FIG. 11 shows a third embodiment of the present invention.
2 is a schematic configuration diagram of the elevator control device of FIG. In the figure, 19 is a speed governor rope for performing speed adjustment as the car 2 moves up and down, and 18 is a speed governor rope tensioning vehicle suspended from the speed governor rope 19. In this embodiment, the cam 12 is attached to the governor rope tensioning vehicle 18, and the speed governor rope tensioning vehicle 1 is operated by the switch unit 13.
8 is configured to measure clearance. In addition,
The end of the governor rope 19 is connected to the hoisting rope winding device 11 provided in the lower portion of the car 2, and is arranged so as to adjust the clearance of the governor rope tensioning wheel 18.

In this embodiment, the clearance of the speed governor rope tensioning wheel 18 is adjusted in an elevator having a structure in which the raising / lowering speed of the car 2 is adjusted by the speed governor rope tensioning wheel 18 and the speed governor rope 19. This is an example of a case where the measurement is automatically performed and the measurement is automatically adjusted.

According to this embodiment, since the clearance measurement of the speed governor rope tensioning wheel 18 and the pulling operation of the speed governor rope 19 for adjusting the clearance are eliminated, the maintainability can be greatly improved.

Example 4. FIG. 12 shows a fourth embodiment of the present invention.
2 is a schematic configuration diagram of the elevator control device of FIG. In the figure, reference numeral 20 denotes a balance rope car, which is suspended by a balance rope 21 between a hoisting rope winding device 11 provided at a lower portion of the car 2 and a counter 3. In addition, balanced rope car 2
A cam 12 is provided at 0, the clearance thereof is measured by the switch unit 13, and the clearance is adjusted by the hoisting rope winding device 11.

This embodiment automatically measures the clearance of the balance rope car 20 in an elevator having a structure in which the balance rope car 20 is suspended by the balance rope 21 between the car 2 and the counter 3. This is an example of a case in which is configured to automatically adjust.

According to this embodiment, the work of measuring the clearance of the balance rope wheel 20 and pulling up and trimming the balance rope 21 for adjusting the clearance is eliminated, so that the maintainability can be improved.

Example 5. FIG. 13 shows a fifth embodiment of the present invention.
It is a schematic block diagram of the elevator control apparatus concerning. As shown in the figure, a hoisting rope winding device 11 is provided on the hoistway ceiling 7 on the car 2 side of the hoisting rope 5.

This embodiment exemplifies a construction in which the hoisting rope winding device 11 performs floor alignment of the car 2.

Generally, in an elevator, a floor alignment operation is performed for a floor shift caused by expansion and contraction of a hoisting rope 5 that occurs when a passenger gets on or off a car 2. This operation is performed by a hoisting machine 4. . On the other hand, in the configuration of this embodiment, by arranging the hoisting rope winding device 11 at the hoisting rope end, it becomes possible to perform floor alignment without operating the hoisting machine 4.

In each of the above embodiments, the number of times the hoisting rope winding device 11 has been operated is stored in the control panel 6 so that the hoisting rope 5 and the speed governor rope 1 can be stored.
9. It is possible to obtain information necessary for maintenance such as grasping the expansion / contraction state of the balance rope 21 and the like. Further, by configuring such information to be transmitted to another place through a line, the situation of the elevator can be grasped even if it is not the installation place of the elevator, and it can be effectively applied to centralized management of the elevator.

In the above embodiment, the counter clearance of the counter 3, the counter clearance of the speed governor rope tensioning wheel 18, and the counter clearance of the balancing rope vehicle 20 are measured and adjusted, and the floor alignment of the car 2 is adjusted. However, it goes without saying that these measurements and adjustments can be applied in any combination, and by applying them according to the maintenance items, the maintainability can be greatly improved.

[0059]

Since the elevator control device of the present invention is constructed as described above, it automatically measures the clearance of the counter weight, speed governor rope tensioning vehicle, balancing rope vehicle, etc. Since it is possible to make adjustments, the number of maintenance personnel is reduced, and dangerous work for maintenance is eliminated, the maintainability can be greatly improved.

[Brief description of drawings]

FIG. 1 is a schematic configuration diagram of an elevator control device according to a first embodiment of the present invention.

FIG. 2 is a front view of the hoisting rope winding device.

FIG. 3 is a top view of the hoisting rope winding device.

FIG. 4 is a cross-sectional view taken along the line AA of FIG.

5 is a cross-sectional view taken along the line BB of FIG.

FIG. 6 is a side view of a counter clearance measuring unit.

FIG. 7 is a flowchart for explaining the operation of the configurations of FIGS.

FIG. 8 is a side view of another example 1 of the counter clearance measuring unit.

FIG. 9 is a side view of another example 2 of the counter clearance measuring unit.

FIG. 10 is a schematic configuration diagram of an elevator control device according to a second embodiment of the present invention.

FIG. 11 is a schematic configuration diagram of an elevator controller according to a third embodiment of the present invention.

FIG. 12 is a schematic configuration diagram of an elevator control device according to a fourth embodiment of the present invention.

FIG. 13 is a schematic configuration diagram of an elevator control device according to a fifth embodiment of the present invention.

FIG. 14 is a schematic configuration diagram of a conventional elevator control device.

[Explanation of symbols]

 1 hoistway 2 car 3 counter 4 hoisting machine 5 hoisting rope 6 control panel 7 hoistway ceiling 8 counter side buffer 9, 10 hoisting rope end 11 hoisting rope winding device 11a winding drum 11b driving device 11c plunger 11d Release device 11e Excitation coil 11f Spring 11g Hole 11h Electric motor 12 Cam 13 Switch unit 13a Upper limit detection switch 13b Reference inside detection switch 13c Lower limit detection switch 14 Counter clearance measurement magnet 15 Proximity switch unit 15a Upper limit detection proximity switch 15b Proximity switch for detecting within standard value 15c Proximity switch for detecting lower limit value 16 Differential transformer core 17 Differential transformer 18 Speed governor rope tension vehicle 19 Speed governor rope 20 Balance rope vehicle 21 Balance rope

Claims (2)

[Claims] 1. A counter clearance measuring means for measuring whether a clearance of a counterweight suspended on a hoisting rope together with an elevator car is within an upper limit value, a lower limit value or a reference value, and based on a measurement result of the measuring means. ,
An elevator control device comprising: an adjusting unit that adjusts a counter clearance within a reference value by hoisting and rewinding the hoisting rope. 2. A clearance measuring means for measuring the clearance of at least one of a counterweight, a speed governor rope tensioning vehicle, and a balance rope vehicle, which is suspended on a hoisting rope together with an elevator car, and the hoisting rope and speed governor. Rope, rope winding means provided at at least one end of the balance rope, and based on the output of the measuring means, at least one clearance of the counterweight, the governor rope tensioning wheel, and the balancing rope vehicle. However, the elevator control device is provided with: a control unit that detects the deviation from a reference value, drives the rope winding means, and adjusts each clearance within the reference value.