KR101283643B1 - Apparatus for controlling of elevator operation - Google Patents

Abstract

The elevator drive control apparatus according to the present invention is installed on one side of the upper side of the hoistway and connected to a first cam attached to one side of the elevator car, and outputs a valid value at least one upper limit switch, on the other side of the upper side of the hoistway. At least one down limit switch installed and connected to the second cam attached to one side of the count weight to output a valid value, and at least one rope installed under the down limit switch to output a valid value to the second cam. A valid value is entered from one of the position error detection switch, the up limit switch and the down limit switch to stop the operation of the elevator car or to the second cam and rope position error detection switch upon arrival of the elevator down car. Elibe stops operating the elevator car when an invalid value occurs due to disconnection And an eater-car drive control unit.

Description

Elevator drive control device {APPARATUS FOR CONTROLLING OF ELEVATOR OPERATION}

The present invention relates to an elevator drive control apparatus and method, and more particularly, elevator drive control device including a limit switch for preventing a collision with the ceiling and the floor of the hoistway upon arrival of the end floor of the elevator-car And to a method.

In general, an elevator system is provided with an end collision vane or an anti-collision limit switch of an elevator car that prevents the elevator car from traveling in the same direction when the elevator car is outside the upper limit or the lower limit level. . At this time, the limit switch is supported by the bracket of the guide rail installed on the hoistway, and the on / off state is changed by the cam CAM attached to the elevator car.

As such, the output values of the limit switches are transmitted to the control panel through a separate wire, and these output values control the operation of the elevator car.

By the way, in the conventional elevator system, it was common that a limit switch is comprised in the upper part of an up-termination layer on a hoistway, and is comprised in the lower part of a downward termination layer. Therefore, when the limit switch is installed in the lower part of the hoistway, the wire is installed to the bottom of the hoistway, which causes a problem of cost increase, and has a disadvantage of being weak in induced voltage and noise.

In addition, when the limit switch is installed on the upper and lower portions of the hoistway as in the conventional method, there is a problem in that the time and cost of checking the state while increasing the state between the upper and lower parts in order to check the state of the limit switch and the malleability are increased. come.

In order to overcome these disadvantages, the conventional elevator system has also been proposed a method of installing a limit switch on top of the elevator car and a cam on the inside of the hoistway. By the way, the installation cost of the electric wire can be partially reduced by installing the limit switch on the upper part of the elevator car, but there are still problems such as cost increase and induced voltage caused by the increase in the capacity of the traveling cable. Doing.

The present invention is to solve the above-described problems, an embodiment of the present invention is to prevent the elevator car up or down collision by preventing the continuous running in the same direction after the arrival of the elevator car upward or downward end layer It is intended to provide a drive control device.

In addition, an embodiment of the present invention is to provide an elevator drive control device that can detect the sagging of the wire rope connecting the elevator car and the count weight in order to secure the accuracy of the stop-prevention limit switch installed on the upper part of the hoistway. .

As technical means for achieving the above-described technical problem, an elevator drive control apparatus according to an aspect of the present invention, the elevator car for driving up and down on the hoistway; A count weight connected to the elevator car through a wire rope and traveling in a direction opposite to the driving direction of the elevator car; At least one upward limit switch installed at an upper side of the hoistway and outputting a valid value when connected to a first cam attached to one side of the elevator car; At least one down limit switch installed at the other upper side of the hoistway and outputting a valid value when connected to a second cam attached to one side of a count weight; At least one rope position error detection switch installed at a lower portion of the upper limit side of the hoistway and outputting a valid value when connected to the second cam; And a valid value for stopping the operation of the elevator car from any one of the up limit switch and the down limit switch, or detecting the second cam and the rope position error upon arrival of the down end layer of the elevator car. And an elevator-car driving control unit for stopping the operation of the elevator-car when an invalid value by non-connection to the switch is input.

According to the above-described problem solving means of the present invention, if the elevator car continues to travel in the same direction after arriving at the upper or lower end floor, it detects the position of the elevator car in multiple stages to reduce or stop the running of the elevator car Control to prevent an elevator-car collision.

And, according to the problem solving means of the present invention, by detecting the occurrence of the rope position error caused by the sagging of the wire rope connecting the elevator car and the count weight, by controlling to stop the running of the elevator car, the limit switch of the down terminal layer This has the effect of increasing accuracy.

In addition, according to the problem solving means of the present invention, when the occurrence of the rope position error for the wire rope is detected by reporting the error occurrence according to the sagging of the wire rope to the management terminal of the elevator system, there is an advantage that can be quickly checked and repaired have.

In addition, according to the problem solving means of the present invention, by installing a limit switch in the upper or lower end layer of the elevator car in the upper part of the hoistway, it is possible to reduce the installation cost of the wire and to check the state of the limit switch is convenient have.

1 is a structural diagram of an elevator system for explaining the top floor collision prevention operation of the elevator-car of the elevator drive control apparatus according to an embodiment of the present invention.
2 is a structural diagram of an elevator system for explaining an elevator collision prevention operation of the elevator car according to an embodiment of the present invention.
3 is a block diagram showing the configuration of an elevator-car driving control unit according to an embodiment of the present invention.
4 is a view for explaining the rope position error detection operation of the elevator drive control apparatus according to an embodiment of the present invention.

Hereinafter, with reference to the accompanying drawings will be described in detail an embodiment of the present invention to be easily implemented by those skilled in the art. As those skilled in the art would realize, the described embodiments may be modified in various different ways, all without departing from the spirit or scope of the present invention. In the drawings, parts irrelevant to the description are omitted in order to clearly describe the present invention, and like reference numerals designate like parts throughout the specification.

Throughout the specification, when a part is said to "include" a certain component, it means that it can further include other components, without excluding other components unless specifically stated otherwise.

1 is a structural diagram of an elevator system for explaining the top floor collision prevention operation of the elevator-car of the elevator drive control apparatus according to an embodiment of the present invention.

And, Figure 2 is a structural diagram of an elevator system for explaining the elevator floor collision prevention operation of the elevator drive control apparatus according to an embodiment of the present invention.

In this case, FIG. 1 shows the state when the elevator car 111 arrives at the uppermost floor on the hoistway, and FIG. 2 shows the state when the elevator car 111 arrives at the lowest floor on the hoistway.

In the elevator system according to an embodiment of the present invention, the elevator car 111 and the count weight 211 are connected to both ends of the wire rope 113, respectively. At this time, when the elevator car 111 moves up and down on the hoistway by driving the hoisting motor 114, the count weight 211 moves in the direction opposite to the driving direction of the elevator car 111 to maintain the weight balance. .

At this time, the elevator drive control apparatus according to an embodiment of the present invention is the upper limit switches (101, 102, 103) and the elevator car 111 to prevent the upward collision when the top floor of the elevator car 111 arrives, The driving of the elevator car 111 is controlled based on whether the down limit switches 201, 202, and 203 are operated to prevent a downward collision when the lowest floor is reached.

In addition, the elevator drive control apparatus according to an embodiment of the present invention is based on the operation of the rope position error detection switch for preventing the occurrence of the rope position error according to the stretching of the wire rope 113 of the elevator car 111 Control the ride.

At this time, the elevator drive control apparatus according to an embodiment of the present invention has been shown to include a rope position error monitoring switch 204 and a rope position error generation switch 205 as a rope position error detection switch for.

Specifically, the first upward limit switch 101, the second upward limit switch 102 and the third limit switch 103 on each side of the upper floor of the elevator in the elevator system according to an embodiment of the present invention at a predetermined interval It is spaced apart in a row.

At this time, the first to third upward limit switches 101, 102, 103 are protruded from the side of the hoistway so as to be connected to the first cam CAM 112 attached to one surface of the elevator car 111, respectively. It is designed to be on when the connection is made.

The first downward limit switch 201, the second downward limit switch 202, and the third downward limit switch 203 are spaced apart from each other by a predetermined interval on the other side of the upper part of the hoistway. In this case, the first to third downward limit switches 201, 202, and 203 protrude from the side of the hoistway so as to be connected to the second cam 212 attached to one surface of the count weight 211, respectively. It is designed to be turned on.

As described above, the output according to each on / off operation of the first to third upward limit switches 101, 102, 103 and the first to third downward limit switches 201, 202, and 203 is an elevator. -Car drive control unit 115 is sent.

1 and 2, the first upper limit switch 101 is installed at the uppermost end of the first to third upper limit switches 101, 102, 103, and the third upper limit switch 101 is installed at the lowermost end. Indicated. In addition, it has been shown that the first downward limit switch 201 is installed at the uppermost end of the first to third downward limit switches 201, 202, and 203, and the third downward limit switch 203 is installed at the lowest end thereof. For reference, the installation heights of the first to third upper limit switches 101, 102, 103 and the installation positions of the first to third lower limit switches 201, 202, and 203 may be installed to correspond to each other.

As shown in FIGS. 1 and 2, the upward and downward limit switches are used to control the upward or downward collision prevention of the elevator car 111 in multiple stages, and the first upward limit switch 101 and the first downward limit switch are used. Reference numeral 201 denotes an end point for preventing the upward and downward collision of the elevator car 111, respectively, and the second upward limit switch 102 and the second downward limit switch 202 respectively represent driving direction limitation points. The third upward limit switch 103 and the third downward limit switch 203 mean speed detection points.

As such, in the exemplary embodiment of the present invention, the elevator drive control device is shown to include three upward limit switches and downward limit switches, respectively, but is configured to include at least one end point limit switch for the upward and downward directions, respectively. It is also possible.

For reference, in the elevator driving control by the limit switch for limiting the driving direction, after the operation of the elevator car 111 is stopped, the reverse (upward or downward) operation is possible through manual operation or the like. On the other hand, when controlling the operation of the elevator by the end point limit switch, the safety circuit of the elevator system is cut off, and thus the entire elevator cannot be operated.

On the other hand, the rope position error monitoring switch 204 and the rope position error generation switch 205 are provided below the first to third downward limit switches 201, 202, and 203 on the upper side of the hoistway.

1 and 2, the rope position error monitoring switch 204 is located above the rope position error generating switch 205, and the rope position error monitoring switch 204 and the third downward limit switch ( 203 are spaced at regular intervals. In particular, the separation distance of the rope position error generating switch 205 and the third downward limit switch 203 may be set to less than the distance from the top arrival position of the elevator-car on the hoistway to the hoist ceiling.

At this time, the rope position error monitoring switch 204 and the rope position error generation switch 205 are installed to protrude from one side of the hoistway so as to be connected to the second cam 212 attached to one side of the count weight 211, respectively. It is designed to be turned on during the connection.

As such, the output according to each on / off operation of the rope position error monitoring switch 204 and the rope position error generating switch 205 is transmitted to the elevator car drive control unit 115.

On the other hand, in the elevator system according to an embodiment of the present invention, a landing van (vane) is installed at a position corresponding to the exact position of each elevator floor on one side of the hoistway, landing on one surface of the elevator car 111 A landing sensor is attached at the position corresponding to the position of the van.

Specifically, as shown in Figs. 1 and 2, the first landing van 207-1 is provided at a position corresponding to the exact position of the lowermost landing door on the hoistway, and corresponds to the exact position of the landing door of the uppermost floor. The second landing van 207-1 is provided at the position. In addition, a landing sensor 206 is attached to one surface of the elevator car 111 so as to correspond to the first and second landing vans 207-1 and 207-2.

1 and 2 illustrate a manner in which the landing sensor is an optical sensor and the landing van serves as a shielding plate to operate the landing sensor. That is, when the elevator car 111 lands on the floor, the landing van 207-1 or 207-2 is positioned between the light emitting part and the light receiving part of the landing sensor 206, so that the value of the landing sensor 206 is increased. The output value is generated by changing to an on or off value. As such, the output value according to the on / off operation of the landing sensor 206 is transmitted to the elevator-car driving control unit 115.

Hereinafter, the operation of the elevator drive control apparatus according to an embodiment of the present invention with reference to FIGS. 3 and 4 to be described in detail.

3 is a block diagram showing the configuration of an elevator-car driving control unit according to an embodiment of the present invention.

And, Figure 4 is a view for explaining the rope position error detection operation of the elevator drive control apparatus according to an embodiment of the present invention.

First, as shown in Figure 3, the elevator car drive control unit 115 according to an embodiment of the present invention is a car position error detection module 501, rope position error detection module 502, car driving control module 503 And rope position error notification module 504.

The car position error detecting module 501 uses the elevator car 111 based on the output values of the first to third upward limit switches 101, 102, 103 and the first to third downward limit switches 201, 202, and 203. Detect errors in dispatch.

In detail, the car position error detecting module 501 is configured to limit each of the first and third upward limit switches 101, 102, and 103 after the elevator car 111 arrives at an upward end layer. Error information according to the switch is transmitted to the car driving control unit 503.

At this time, when the output value according to the on of the third upward limit switch 103 is input, the car position error detecting module 501 determines that an error occurs in the speed of the elevator car, and provides speed error occurrence information. Transmission to the car driving control module 503.

In addition, when the output value according to the on of the second up limit switch 102 is input, the car position error detecting module 501 determines that a driving direction limitation error occurs in which the elevator car continues to travel upward. The driving direction limitation error information is transmitted to the car driving control module 503.

In addition, the car position error detection module 501 determines that the elevator-car is located at the end point for preventing the collision, when the output value according to the on of the first upward limit switch 101 is input, the risk of collision The generated error information is transmitted to the car driving control module 503.

On the other hand, the car position error detection module 501, if any one of the first to third lower limit switches 201, 202, 203 after the elevator car 111 arrives in the lower end layer, Error information according to the limit switch is transmitted to the car driving control unit 503.

At this time, the car position error detection module 501 determines that an error has occurred in the speed of the elevator car when the output value according to the on (on) of the third downward limit switch 203 is inputted, and determines the speed error occurrence information. Transmission to the car driving control module 503.

When the output value according to the on of the second downward limit switch 202 is input, the car position error detecting module 501 determines that a driving direction limitation error occurs in which the elevator car continues to travel upward. The driving direction limitation error information is transmitted to the car driving control module 503.

In addition, the car position error detection module 501 determines that the elevator-car is located at the end point for collision avoidance when an output value according to the on of the first downward limit switch 2101 is input, and a collision risk occurs. The error information is transmitted to the car driving control module 503.

The car driving control unit 503 controls the driving of the elevator car 111 according to the error information input from the car position error detecting module 501.

Specifically, the car running control unit 503 controls the drive of the hoisting motor 114 to decelerate the speed of the elevator car 111 when the speed error occurrence information is input. And, when the driving direction limitation error information is input, the car running control unit 503 controls the drive of the hoisting motor 114 to stop the traveling operation of the elevator car 111.

In addition, when the collision risk occurrence error information is input, the car driving control unit 503 controls the elevator-car 111 and the entire driving of the elevator system to stop.

On the other hand, the output values of the first to third lower limit switches 201, 202, and 203 input to the elevator-car drive control unit 115 include the first to second cams 212 provided on the count weight 211. Occurs when connected to the third downward limit switch 201, 202, 203.

By the way, when an error situation occurs such that the wire rope 113 connecting the elevator car 111 and the count weight 211 is stretched by long operation and the surrounding environment, the elevator car 111 is terminated downward. The second cam 212 of the count weight 211 does not connect to any one of the first to third downward limit switches 201, 202, and 203 even after continuously landing in the same position and continuously traveling in the same direction. Rope location errors will occur.

That is, as shown in FIG. 2, when the wire rope 113 sags, the second cam 212 of the count weight 211 is driven by the elevator car 111 landing on the downward termination layer. The rope position error monitoring switch 204 and the rope position error generating switch 205 may be connected to any one of the first to third downward limit switches 201, 202, and 203.

When such a rope position error occurs due to the sagging of the wire rope 113, it is not possible to accurately detect the case where the elevator car 111 continues to travel in the same direction after arriving at the downward termination layer.

Therefore, the elevator drive control apparatus according to an embodiment of the present invention detects the rope position error caused by the sagging of the wire rope 113 to control the running of the elevator car 111.

Specifically, the rope position error monitoring switch 204 is to be turned on with the output value (on or off) set from the landing sensor 206 of the elevator car 111 being input. Can be. That is, as shown in FIG. 3A, when the elevator car 111 lands on the downward termination layer in a state where the wire rope 113 is stretched, the second cam 212 provided in the count weight 211 is removed. The rope position error monitoring switch 204 is turned on when connected to the rope position error monitoring switch 204.

At this time, the rope position error detection module 502 receives the set output value (on or off) from the landing sensor 206, and the set output value (on ( on)).

Then, the rope position error detection module 502 determines that there is a possibility that a rope position error occurs due to sagging of the wire rope 113, and transmits the rope position error possible information to the car driving controller 503.

Then, the rope position error monitoring switch 204 and the rope position error generation switch 205 in the state in which the output value (on or off) set from the landing sensor 206 of the elevator car 111 is input. At least one of) may be turned on.

For example, in FIG. 3B, after the elevator car 111 lands on the downward termination layer in a state where the wire rope 113 is stretched, the second cam 212 provided in the count weight 211 is moved. The rope position error generating switch 205 is connected to the rope position error generating switch 205 to show a state of being on.

At this time, the rope position error detection module 502 receives the output value (on or off) set from the landing sensor 206, the rope position error monitoring switch 204 and the rope position error generation switch ( Receive a set output value (on) for at least one of 205.

Then, the rope position error detection module 502 determines that the rope position error occurs due to the sagging of the wire rope 113, and transmits the rope position error occurrence warning information to the car driving controller 503.

Further, the first to third downward limit switches 201, 202, and 203 are set in a state in which an output value (on or off) set from the landing sensor 206 of the elevator car 111 is input. The output value of any one of the rope position error monitoring switch 204 and the rope position error generating switch 205 may not occur.

That is, as shown in FIG. 3C, after the elevator car 111 lands on the downward termination layer in a state where the wire rope 113 is stretched, the second cam 212 provided in the count weight 211 is provided. Either of the rope position error monitoring switch 204 and the rope position error generating switch 205 cannot be connected, and the rope position error monitoring switch 204 and the rope position error generating switch 205 remain off. Done.

At this time, the rope position error detection module 502 receives the set output value (on or off) from the landing sensor 206, the first to third downward limit switch (201, 202) It is confirmed that 203 and the rope position error monitoring switch 204 and the rope position error generating switch 205 are off.

For example, the rope position error detection module 502 receives the set output value (on or off) from the landing sensor 206, and then the rope position error monitoring switch 204 within a preset time limit. ) And the output values of the fault monitoring switch 204 and the rope position error generating switch 205 are invalid values (i.e., if the on value of either the rope position error generating switch 205 is not entered). off) value). For reference, the invalid value may be input from another module (not shown) equipped with a timer or generated by the rope position error detecting module 502.

Then, the rope position error detection module 502 determines that the stretched state of the wire rope 113 is a dangerous state, and transmits the rope position error occurrence information to the car driving controller 503.

At this time, the car driving control unit 503 operates the elevator system normally when receiving the rope position error possible information, and when receiving the rope position error occurrence warning information, the management terminal of the elevator system (for example, a management terminal of a construction company or a repair company). The rope position error notification module 504 is controlled to transmit an elevator rope position error warning to (not shown).

In addition, the car running control unit 503 stops the operation of the elevator system when receiving the rope position error occurrence information. That is, the elevator car is not driven even if an elevator car call is received at each elevator floor. The car driving controller 503 transmits rope position error occurrence information through the rope position error notification module 504.

The rope position error notification module 504 transmits an elevator rope position error warning and a rope position error generation message through wired / wireless communication with a management terminal of the elevator system.

The foregoing description of the present invention is intended for illustration, and it will be understood by those skilled in the art that the present invention may be easily modified in other specific forms without changing the technical spirit or essential features of the present invention. will be. Therefore, it should be understood that the exemplary embodiments described above are exemplary in all respects and not restrictive. For example, each component described as a single entity may be distributed and implemented, and components described as being distributed may also be implemented in a combined form.

The scope of the present invention is shown by the following claims rather than the above description, and all changes or modifications derived from the meaning and scope of the claims and their equivalents should be construed as being included in the scope of the present invention. do.

101: first upward limit switch 102: second upward limit switch
103: third upward limit switch 201: first downward limit switch
202: second downward limit switch 203: third downward limit switch
204: Rope position error monitoring switch 205: Rope position error generating switch
206: landing sensor 207: landing van
111: elevator car 112: first cam
211: count weight 212: second cam
113: wire rope 114: hoisting motor
115: elevator car drive control unit

Claims (7)

In an elevator drive control apparatus,
An elevator car traveling up and down on a hoistway;
A count weight connected to the elevator car through a wire rope and traveling in a direction opposite to the driving direction of the elevator car;
A landing van installed at a position in a hoistway corresponding to a fixed position of a lowermost landing door;
A landing sensor provided on one surface of the elevator car so as to detect the down-end floor landing of the elevator car corresponding to the landing van;
At least one upward limit switch installed at one side of an upper part of a hoistway and outputting a valid value when connected to a first cam attached to one side of the elevator car so as to prevent an upward collision upon arrival of the top floor of the elevator car;
At least one down limit switch installed at the other upper side of the hoistway and outputting a valid value when connected to a second cam attached to one side of the count weight so as to prevent a downward collision upon arrival of the lowest floor of the elevator car;
At least one rope position error detection switch installed at a lower portion of the upper limit side of the hoistway and outputting a valid value when connected to the second cam; And
When a valid value is output from one of the upward limit switch and the downward limit switch, the elevator-car stops running, and the rope is detected when the landing terminal and the landing terminal detect the downward-end layer landing of the elevator-car through the landing sensor. If a valid value is outputted from a position error detection switch, a warning of a rope position error according to the length of the wire rope is warped. And an elevator car drive control unit for stopping the operation of the elevator car when the output of the position error detecting switch is maintained at an invalid value. The method of claim 1,
And the separation distance between the lowest end of the at least one downward limit switch and the lowest end of the rope position error detection switch is set to be less than a distance from an upward end layer position of the elevator car on the hoistway to the hoist ceiling. The method of claim 1,
And the downward limit switch and the rope position error detecting switch are installed in a line on an upper surface of the hoistway. The method of claim 1,
The elevator car drive control unit,
When the output of the rope position error detection switch is maintained at the invalid value such that the landing of the downward end layer of the elevator car is sensed and a predetermined time limit elapses while the landing is detected, the elevator car operates. Elevator drive control device to stop the engine. The method of claim 1,
The elevator car drive control unit,
When a valid value is outputted from the rope position error detecting switch when the landing terminal and the landing sensor detect the down-end floor landing of the elevator car through the landing sensor, the elevator drive transmits a rope position error warning message to a preset elevator system management terminal. controller. The method of claim 1,
The at least one upward limit switch and the at least one downward limit switch each include an end point switch,
And a valid value output from the end point switch is for stopping the operation of the elevator car. The method according to claim 6,
The at least one upward limit switch and the at least one downward limit switch further include at least one of a driving direction limit switch and a speed detection switch, respectively,
Elevator drive control device wherein the end point switch is located at the top.

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