JP2009029551A - Control device and control method of elevator, and modification method of existing elevator - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To prevent collision of a door engaging device caused by an aftershock without impeding the function of an opening/closing switch of an elevator landing door when an elevator is shifted to earthquake time emergency operation and an elevator car is traveling toward a closest floor. <P>SOLUTION: This device is provided with a control part 26 controlling earthquake time emergency operation, a car location and speed computing part 27 computing the current location and speed of a car 18, and a location recording part 28 wherein a part of entire ascending and descending step of the car 18 is recorded as a door closing force increased section where door closing pushing force for a car door 1 is increased when required. Further, when the car 18 is determined to be traveling in the door closing force increased section during the earthquake time emergency operation, an operation command is output to increase the door closing pushing force of the car door 1 more than ordinary door closing force. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to an elevator control apparatus that performs control operation during an earthquake, a control method therefor, and a repair method for repairing an existing elevator.

  FIG.4 and FIG.5 is the front view and top view which show the door apparatus of a common elevator. 4 and 5, reference numeral 1 denotes a car door that opens and closes an elevator car entrance, and as an example, shows a double door type. 2 is a door drive device for driving the car door 1 to open and close, 3 is a door rail that guides the opening and closing direction of the car door 1, 4 is a car sill that guides the moving direction of the lower end of the car door 1, and 5 is a car door 1 and door drive. A door girder that supports the device 2, the door rail 3, and the like.

  Specifically, the car door 1 is provided with a door hanger 6 on the upper portion thereof, and a car roller 1 provided on the door hanger 6 so as to be able to rotate freely rolls on the door rail 3. The opening / closing direction is guided.

  The door driving device 2 includes, for example, a door motor 8 provided on the upper surface of the door beam 5, a driving roller 9 and a return wheel 10 which are rotatably provided on both upper sides of the door beam 5, the door motor 8 and the driving roller 9. An endless first drive belt 11 wound around the belt, a drive roller 9, and an endless second drive belt 12 wound around the return wheel 10. And, as shown in FIG. 4, by connecting the door hanger 6 of one car door 1 to the upper side of the second drive belt 12 and the door hanger 6 of the other car door 1 to the lower side of the second belt 12, respectively. The car door 1 is opened and closed by controlling the rotational force and the rotational direction of the door motor 8. As can be seen from FIG. 4, the fully open state and the fully closed state of the car door 1 can be maintained by electrical control of the door motor 8.

  The above is about the opening / closing operation of the car door 1, and the landing door 13 for opening and closing the landing doorway of the elevator is also driven to open / close by the door driving device 2 installed in the car. That is, the car door 1 and the landing door 13 are provided with door engaging devices so as to face each other in plan view, and the door engaging devices are engaged with each other at the time of landing of the car. 2 is transmitted to the landing door 13 through the door engaging device, and the landing door 13 is opened and closed. The door engaging device is, for example, an engaging roller 14 provided on the landing door 13, and provided on the car door 1 so as to protrude to the landing side, and is disposed on both sides of the engaging roller 14 when the car is landing. And a pair of engagement vanes 15.

  FIG. 6 is a front view showing a general elevator door engaging device. When the car door 1 and the landing door 13 are fully closed, the door engaging device is disposed between the engaging roller 14 and the engaging vanes 15 on both sides thereof so that they do not interfere with each other during traveling of the car. A predetermined gap is formed in plan view. Moreover, the elevator 16 is provided with a locking device 16 to prevent the landing door 13 from being opened except when the car is landing (when the car door 1 is opened and closed) (FIG. 6 (a)). )reference).

  The locking device 16 is unlocked simultaneously with the opening of the car door 1 by the engaging operation of the door engaging device when the car door 1 is opened. That is, when the door opening operation of the car door 1 is started, the engagement vane 15 moves from the state shown in FIG. 6A to the right side of the drawing and biases the upper engagement roller 14. Since the engagement roller 14 is rotatably provided on the landing door 13 around the lower engagement roller 14, the upper engagement roller 14 is urged by the engagement vane 15, so The engagement roller 14 and the key portion of the locking device 16 fixed to the engagement roller 14 rotate around the lower engagement roller 14 until the engagement vane 15 contacts the lower engagement roller 14. To do. That is, the car door 1 and the landing door 13 can be opened in the state shown in FIG.

  An open / close switch 17 detects the open / closed state of the landing door 13. For example, as shown in FIG. 6, the open / close switch 17 is turned on when the landing door 13 is fully closed and the locking device 16 is locked. That is, when the landing door 13 is opened or the locking device 16 is unlocked, the opening / closing switch 17 is opened and is turned off. In the normal operation of the elevator, when the door is opened for passengers getting on and off, the open / close switch 17 is always in the OFF state. In such a case, no special control is performed by the elevator. On the other hand, when the OFF state of the open / close switch 17 is detected when the car is traveling, for example, control such as an emergency stop of the elevator is generally performed to ensure safety.

  During normal operation of the elevator, unless the landing door 13 is opened due to mischief or the like, an abnormal state is not detected by the open / close switch 17, and the safety circuit hardly operates. However, when the elevator is controlled during an earthquake, that is, when the car is traveling toward the nearest floor based on the earthquake information, the on / off switch 17 is instantaneously turned off due to the occurrence of an aftershock, and the elevator is urgently stopped. There was a case. That is, when an aftershock occurs when the car reaches the vicinity of the nearest floor, the car door 1 is slightly opened due to the shaking, and the engagement vane 15 and the engagement roller 14 may collide. In such a case, confinement occurs, and a great deal of time and labor is required to rescue the passengers.

  As a prior art for solving the above problem, for example, when the elevator is shifted to the control operation at the time of earthquake and the car is traveling toward the nearest floor, even if the open / close switch is turned off, There has been proposed a vehicle in which the car is allowed to continue running without an emergency stop by the action of an off-delay timer (see Patent Document 1).

Japanese Utility Model Publication No. 2-105968

  In the thing of patent document 1, when an elevator shifts to the control operation at the time of an earthquake, since the off-delay timer is always set to be effective, the opening / closing switch of the landing that is not related to the position of the car is turned off. In addition, there was a problem that the stoppage of the car was greatly delayed. Also, when the aftershock sways greatly and the open / close switch is turned off, there is a problem that the stop of the car is delayed.

  The present invention has been made to solve the above-described problems, and its purpose is to use a landing door when an elevator is shifted to an earthquake control operation and the car is traveling toward the nearest floor. Control device and control method of an elevator capable of preventing a collision of a door engagement device caused by an aftershock without impeding the function of the opening / closing switch of the door, and a repair method for repairing an existing elevator to achieve the above object Is to provide.

  An elevator control device according to the present invention is an elevator control device having an earthquake-controlled operation function for controlling the traveling of an elevator car based on earthquake information, a control unit for controlling an earthquake-controlled operation; A car position speed calculation unit that calculates the current position and speed of the car, and a record in which a part of the entire raising / lowering process of the car is recorded as a door closing force increasing section that increases the door closing pressing force of the car door when necessary. On the basis of the state information of the elevator by the control unit, the current position and speed information of the car calculated by the car position speed calculating unit, and the door closing force increasing section recorded in the recording unit. And a determination unit that increases the door closing pressing force of the car door more than the normal door closing force when it is determined that the vehicle is traveling in the door closing force increasing section.

  The elevator control method according to the present invention has a recording unit in which a part of the elevator car lifting / lowering process is recorded as a door closing force increasing section for increasing the door closing pressing force of the car door when necessary. An elevator control method having an earthquake control operation function that controls the traveling of a car based on earthquake information, the step of determining whether or not the operation has shifted to an earthquake control operation, and the car is traveling A step of determining whether the current position of the car is a door closing force increasing section recorded in the recording unit, and the car traveling in the door closing force increasing section in the control operation during an earthquake. And a step of increasing the door-closing pressing force of the car door more than the normal door-closing force when it is determined that the car door is present.

  An elevator repair method according to the present invention is a repair method for repairing an existing elevator having an earthquake-controlled operation function for controlling the traveling of an elevator car based on earthquake information, and includes A part is recorded in the existing elevator as a door closing force increasing section that increases the door closing pressing force of the car door when necessary, and it is determined that the car is traveling in the door closing force increasing section during earthquake operation And a step of adding to the existing elevator a determination function for increasing the door-closing pressing force of the car door more than the normal door-closing force.

  The elevator repairing method according to the present invention includes a step of adding an earthquake control operation function for controlling the traveling of an elevator car based on earthquake information to an existing elevator, and a part of the entire elevator lifting / lowering process. Is recorded in the existing elevator as the door closing force increasing section that increases the door closing pressing force of the car door when necessary, and when it is determined that the car is traveling in the door closing force increasing section in the control operation during earthquake Adding a determination function for increasing the door-closing pressing force of the car door to a normal door-closing force, to the existing elevator.

  According to the present invention, when the elevator is shifted to the control operation at the time of earthquake and the car is traveling toward the nearest floor, the door engagement caused by the aftershock is performed without hindering the function of the opening / closing switch of the landing door. Device collision can be prevented.

  In order to explain the present invention in more detail, it will be described with reference to the accompanying drawings. In addition, in each figure, the same code | symbol is attached | subjected to the part which is the same or it corresponds, The duplication description is simplified or abbreviate | omitted suitably.

Embodiment 1 FIG.
FIG. 1 is a configuration diagram illustrating an elevator control apparatus according to Embodiment 1 of the present invention. In FIG. 1, 18 is a car that moves up and down in the elevator hoistway, 19 is a counterweight that moves up and down in the hoistway in the opposite direction to the car 18, 20 is a main rope that suspends the car 18 and the counterweight 19 like a fishing bottle, 21 is a driving sheave around which the main rope 20 is wound, 22 is a hoisting machine that drives the driving sheave 21 to raise and lower the car 18, and 23 is a control that controls the entire elevator, such as the control of the hoisting machine 22. A device 24 is an elevator hall. The elevator shown in FIG. 1 is also provided with a door device similar to that shown in FIGS. 4 to 6 at the car 18 and each landing 24. A door motor control unit 25 controls the door driving device 2 (door motor 8) based on a command from the control device 23.

Next, a specific configuration of the control device 23 will be described.
The control device 23 includes, for example, a control unit 26, a car position / speed calculation unit 27, a position recording unit 28, and a determination unit 29. The control unit 26 controls the operation of the elevator appropriately, and has, for example, control functions for the hoisting machine 22 and the door motor control unit 25. The control unit 26 also has a function of controlling the above-described earthquake control operation based on earthquake information from an earthquake detector (not shown) or the like.

  The car position / speed calculator 27 has a function of calculating the current position and speed of the car 18 in the hoistway based on the pulse generated by the pulse generator 22a. The pulse generator 22a is connected to, for example, the output shaft of the hoisting machine 22, and generates a pulse in synchronization with the rotation of the output shaft, that is, the traveling of the car 18.

  The position recording unit 28 stores a predetermined door closing force increasing section. This door closing force increasing section increases the door closing pressing force of the car door 1 (the torque of the door motor 8 for further pressing the fully closed car door 1 in the door closing direction) when necessary. It is a section set as a part of the entire lifting process, and is set to include all the heights at which the engagement vanes 15 can contact the engagement rollers 14 when the car door 1 moves in the door opening / closing direction. Has been. That is, the door closing force increasing section extends, for example, vertically by a predetermined distance α from the door zone Dz of each landing 24 so as to include all sections in which a part of the engagement vane 15 is at the same height as the engagement roller 14. (Hereinafter also referred to as “Dz ± α” in the drawings).

  Here, the door zone Dz refers to a section in which the door opening and closing operation is set during normal operation of the elevator. Therefore, the engagement vane 15 is set to be longer than the door zone Dz of each floor so that the door opening / closing operation is reliably performed. The predetermined distance α is added above and below the door zone Dz in consideration of the difference between the length of the engagement vane 15 and the length of the door zone Dz.

  The determination unit 29 has a function of determining whether or not to increase the door closing pressing force of the car door 1. The determination unit 29 includes each of the elevator state information by the control unit 26, the current position and speed information of the car 18 calculated by the car position speed calculation unit 27, and the door closing force increasing section recorded in advance in the position recording unit 28. The necessity is determined based on the information. Specifically, the determination unit 29 determines whether the door closing pressing force needs to be increased when the elevator is shifted to the earthquake control operation and the car 18 is traveling in the door closing force increasing section. That is, the determination unit 29 determines whether the elevator 18 is not in an earthquake-controlled operation, the car 18 is in an earthquake-controlled operation, and if the car 18 is not traveling in the door closing force increasing section, the car 18 is in an earthquake-controlled operation. When is stopped, it is determined that the door closing pressing force does not need to be increased.

  When the determination unit 29 determines that the door closing pressing force needs to be increased, an instruction to increase the door closing pressing force is output to the door motor control unit 25 via the I / F 30 (and the control unit 26). The door closing pressing force of the car door 1 is increased more than the normal door closing force. That is, the rotation direction and torque of the door motor 8 are controlled so that the car door 1 in the fully closed state is pressed in the door closing direction with a greater force than in normal operation.

  Reference numeral 31 denotes an elevator maintenance terminal device used by an elevator maintenance worker or the like during elevator maintenance, and reference numeral 32 denotes an external monitoring center that monitors the elevator. The maintenance terminal device 31 and the monitoring center 32 are connected to the control device 23 via the I / F 33 when necessary or always, and the door closing force increasing section recorded in the position recording unit 28 is used as an elevator installation site. It has a function to set and change according to the model.

Next, the operation of the elevator control apparatus having the above configuration will be described.
FIG. 2 is a flowchart showing the operation of the elevator control apparatus according to Embodiment 1 of the present invention. In the position recording unit 28, for example, a door closing force increasing section under the above conditions is set and stored in advance. When earthquake information is input during normal operation of the elevator (S101), the control device 23 first determines whether or not to shift to an earthquake control operation based on the earthquake information (S102). For example, when the earthquake shake is smaller than a predetermined value, the elevator returns to the normal operation without shifting to the earthquake control operation.

  On the other hand, when the elevator is shifted to the seismic control operation due to a large earthquake shake, next, the elevator state information by the control unit 26 and the current position of the car 18 calculated by the car position speed calculation unit 27 Based on the speed information and the door closing force increasing section recorded in the position recording unit 28, the determination unit 29 determines whether or not the car 18 is traveling (S103), and the current position of the car 18 is the door. It is determined whether or not it is a closing force increasing section (for example, Dz ± α) (S104). When all of the conditions in S102 to S104 are satisfied (Yes), the determination unit 29 outputs a door closing pressing force increase command, and the door closing pressing force of the car door 1 is increased more than the normal door closing force. ,

  On the other hand, when it does not correspond to any of S102 thru | or S104 (No), the increase instruction | indication of door closing pressing force is not output, but the fully closed state of the car door 1 is hold | maintained by normal door closing force (S106). . When the car 18 stops at the landing 24 on the nearest floor, it is determined in S103 that the car 18 is not traveling, and the door closing pressing force increase command is not output.

  According to Embodiment 1 of the present invention, the function of the opening / closing switch 17 of the landing door 13 is obstructed when the elevator is shifted to the earthquake control operation and the car 18 is traveling toward the nearest floor. Therefore, the collision between the engagement vane 15 and the engagement roller 14 caused by aftershock can be prevented.

  That is, when the car 18 is traveling at a height at which the engagement vane 15 and the engagement roller 14 can come into contact during an earthquake control operation, the car door 1 can be opened with a force greater than the normal door closing force. Since it is pressed in the closing direction, the car door 1 is not opened even if an aftershock occurs, and the open / close switch 17 is not instantaneously turned off as in the prior art. At this time, since the normal function of the opening / closing switch 17 is not hindered, there is no possibility of causing the conventional problem that the stop of the car 18 is delayed when necessary.

  In addition, since the said door closing force increase area is limited to a part of all the raising / lowering processes of the cage | basket | car 18 which needs to increase door closing pressing force, the burden (generation | generation of heat, etc.) to the door motor 8 is carried out. And the door device will not malfunction. On the other hand, the door closing force increasing section can be corrected and changed later by an operation from the maintenance terminal device 31 or the monitoring center 32. It can be set for each installation site, greatly improving maintainability.

  In addition, if the function of the determination unit 29 can be realized, the above-described effect can be obtained. Therefore, the application to a new elevator is naturally possible, and the application to an existing elevator can be easily and inexpensively implemented. That is, the existing elevator equipped with the earthquake control operation function is generally provided with the function of the car position speed calculation unit 27 and the function of the control unit 26 in advance, and therefore the function of the position recording unit 28 and the determination unit 29. These functions may be newly added to the existing elevator. In addition, when the existing elevator does not have an earthquake control operation function, in addition to the above-described modification, an earthquake control operation function may be added to the existing elevator. The above-described effects can be achieved only by such work.

Embodiment 2. FIG.
FIG. 3 is a diagram for explaining an elevator control apparatus according to Embodiment 2 of the present invention. The configuration and operation of the elevator control device are the same as those in the first embodiment.

  In FIG. 3, 34 is a pair of guide rails standing in the hoistway for guiding the elevator 18 in the hoisting direction, 35 is a rail bracket for fixing the guide rail 34 to a fixed body in the hoistway, Reference numeral 36 denotes a guide shoe provided on the car 18. The cage 18 is restrained from being displaced in the horizontal direction by the guide shoes 36 provided on the upper and lower sides thereof sliding on the guide surfaces of the guide rails 34.

  The guide rail 34 is installed by a skilled worker at the time of elevator installation, but the width (distance L) cannot be made completely constant over the entire lift range of the car 18. That is, the width of the guide rail 34 varies slightly depending on the height. The guide shoe 36 is positioned on the basis of the position where the width of the guide rail 34 is the smallest (the distance L is the shortest) in order to ensure the smooth raising and lowering of the car 18.

  Note that a slight variation in the width of the guide rail 34 does not become a problem during normal operation of the elevator. However, when an aftershock occurs after the transition to the control operation during an earthquake, the left-right swing of the car 18 also depends on the width of the guide rail 34. Therefore, the car 18 shakes greatly at the above wide width. The possibility that the car door 1 will open increases.

  Therefore, the door closing force increasing section is set in consideration of the width of the guide rail 34. Specifically, the distance L between the guide rails 34 is measured, and a height (section) where the distance L between the guide rails 34 is larger than a predetermined value is included in the door closing force so as to include the maximum width of the guide rail 34. Set as an increasing section. In addition, you may use together the setting of the said door closing force increase area with the setting method by the door engaging apparatus shown in Embodiment 1. FIG. With such a configuration, it is possible to further reduce the occurrence of confinement in an earthquake operation.

  The distance L between the guide rails 34 of the existing elevator is often measured in advance when the guide shoe 36 is set. For this reason, the said structure can be easily applied also to the existing elevator.

It is a block diagram which shows the control apparatus of the elevator in Embodiment 1 of this invention. It is a flowchart which shows operation | movement of the control apparatus of the elevator in Embodiment 1 of this invention. It is a figure for demonstrating the control apparatus of the elevator in Embodiment 2 of this invention. It is a front view which shows the door apparatus of a general elevator. It is a top view which shows the door apparatus of a common elevator. It is a front view which shows the door engagement apparatus of a common elevator.

Explanation of symbols

1 car door, 2 door drive, 3 door rail, 4 car sill,
5 door girders, 6 door hangers, 7 door rollers, 8 door motors,
9 Driving roller, 10 Return wheel, 11 First driving belt,
12 second drive belt, 13 landing door, 14 engagement roller, 15 engagement vane, 16 locking device, 17 open / close switch, 18 car, 19 counterweight,
20 main ropes, 21 drive sheaves, 22 hoisting machines, 22a pulse generators,
23 control device, 24 landing, 25 door motor control unit, 26 control unit,
27 car position speed calculation unit, 28 position recording unit, 29 determination unit, 30 I / F,
31 maintenance terminal device, 32 monitoring center, 33 I / F, 34 guide rail,
35 rail bracket, 36 guide shoe

Claims (8)

An elevator control device having an earthquake control operation function for controlling the traveling of an elevator car based on earthquake information,
A control unit for controlling operation during an earthquake;
A car position speed calculator for calculating the current position and speed of the car;
A part of the entire lifting / lowering process of the car is recorded as a door closing force increasing section for increasing the door closing pressing force of the car door when necessary,
Based on the state information of the elevator by the control unit, the current position and speed information of the car calculated by the car position speed calculation unit, the door closing force increase section recorded in the recording unit, A determination unit that increases the door closing pressing force of the car door more than the normal door closing force when it is determined that the car is traveling in the door closing force increasing section;
An elevator control device comprising:   The door closing force increasing section is set so that the door engaging device provided in the car door and the landing door includes all heights that can be contacted when the car door moves in the door opening / closing direction. The elevator control device according to claim 1.   The elevator control device according to claim 1 or 2, wherein the door closing force increasing section is set so as to include a height of a maximum width of the guide rail that guides the raising and lowering direction of the car. A part of the elevator car lifting / lowering process has a recording part recorded as a door closing force increasing section for increasing the door closing pressing force of the car door when necessary,
An elevator control method having an earthquake control operation function for controlling the traveling of the car based on earthquake information,
A step of determining whether or not the operation has shifted to an earthquake-controlled operation;
Determining whether the car is traveling;
Determining whether the current position of the car is a door closing force increase section recorded in the recording unit;
When it is determined that the car is traveling in the door closing force increasing section in the control operation during an earthquake, the step of increasing the door closing pressing force of the car door more than the normal door closing force;
An elevator control method comprising: The door engaging device provided in the car door and the landing door sets the door closing force increasing section so as to include all heights that can be contacted when the car door moves in the door opening / closing direction, and the recording unit The steps to record in
The elevator control method according to claim 4, further comprising: Measuring the width of the guide rail that guides the raising and lowering direction of the car, setting a door closing force increasing section so as to include the height of the maximum width of the guide rail, and recording the recording section;
The elevator control method according to claim 4, wherein the elevator control method is provided. A renovation method for refurbishing an existing elevator equipped with an earthquake control operation function for controlling the traveling of an elevator car based on earthquake information,
Recording a part of the entire lifting process of the car in an existing elevator as a door closing force increasing section that increases the door closing pressing force of the car door when necessary;
A step of adding to the existing elevator a determination function for increasing the door closing pressing force of the car door more than the normal door closing force when it is determined that the car is traveling in the door closing force increasing section in the control operation during an earthquake. When,
A method of repairing an existing elevator characterized by comprising Adding an earthquake control operation function for controlling the traveling of the elevator car based on the earthquake information to the existing elevator;
Recording a part of the entire lifting process of the car in an existing elevator as a door closing force increasing section that increases the door closing pressing force of the car door when necessary;
A step of adding to the existing elevator a determination function for increasing the door closing pressing force of the car door more than the normal door closing force when it is determined that the car is traveling in the door closing force increasing section in the control operation during an earthquake. When,
A method of repairing an existing elevator characterized by comprising

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