CN112041256A

CN112041256A - Control device for diagnosing suspension state of elevator door

Info

Publication number: CN112041256A
Application number: CN201880092574.2A
Authority: CN
Inventors: 安部雅哉
Original assignee: Mitsubishi Electric Building Techno Service Co Ltd
Current assignee: Mitsubishi Electric Building Solutions Corp
Priority date: 2018-06-27
Filing date: 2018-06-27
Publication date: 2020-12-04
Anticipated expiration: 2038-06-27
Also published as: WO2020003394A1; JP6583573B1; CN112041256B; JPWO2020003394A1

Abstract

Provided is an elevator control device capable of easily grasping the suspension state of a door. An elevator control device comprises: a storage unit for storing information indicating the amount of light received by each of the plurality of light receivers when the plurality of light emitters provided in the elevator door emit light; and a determination unit that determines a hanging state of the door based on the light receiving amount corresponding to the information stored in the storage unit. With this configuration, the suspended state of the door can be easily grasped.

Description

Control device for diagnosing suspension state of elevator door

Technical Field

The present invention relates to a control device for diagnosing a suspended state of an elevator door.

Background

Patent document 1 discloses an elevator system. The elevator system checks the state of a combination of a light projector and a light receiver provided in an elevator door. In this elevator system, it is sometimes necessary to replace a component that affects the suspension state of the door. In this case, it is necessary to readjust the suspended state of the door after replacing the component.

Documents of the prior art

Patent document

Patent document 1: japanese patent laid-open publication No. 2013-147339

Disclosure of Invention

Problems to be solved by the invention

However, in the elevator system disclosed in patent document 1, the suspended state of the door after replacement of the component cannot be grasped. Therefore, readjustment of the suspended state of the door requires much time.

The present invention has been made to solve the above problems. The invention aims to provide an elevator control device capable of easily grasping the suspension state of a door.

Means for solving the problems

An elevator control device of the present invention includes: a storage unit that stores information indicating the amount of light received by each of a plurality of light receivers when a plurality of light emitters provided in a door of an elevator emit light; and a determination unit that determines a hanging state of the door based on the light receiving amount corresponding to the information stored in the storage unit.

Effects of the invention

According to the present invention, the elevator control device determines the suspension state of the door based on the change in the amount of light received by each of the plurality of light receivers. Therefore, the hanging state of the door can be easily grasped.

Drawings

Fig. 1 is a configuration diagram of an elevator system to which an elevator control device according to embodiment 1 is applied.

Fig. 2 is a front view of a car door device of an elevator system to which an elevator control device according to embodiment 1 is applied.

Fig. 3 illustrates a method of determining a suspended state of a pair of car doors by the elevator control apparatus according to embodiment 1.

Fig. 4 is a diagram showing the light receiving amounts of a plurality of light receivers of an elevator to which the elevator control device of embodiment 1 is applied.

Fig. 5 is a flowchart for explaining an outline of the operation of the elevator control device according to embodiment 1.

Fig. 6 is a hardware configuration diagram of an elevator control device according to embodiment 1.

Detailed Description

The mode for carrying out the invention is explained with reference to the drawings. In the drawings, the same or corresponding portions are denoted by the same reference numerals. Repeated explanation of this part is appropriately simplified or omitted.

Embodiment 1.

In the elevator system of fig. 1, a hoistway 1 penetrates each floor of a building not shown. The machine room 2 is provided directly above the hoistway 1. Each of the plurality of landings 3 is provided on each floor of the building 1. Each of the landings 3 faces the hoistway 1.

The hoisting machine 4 is provided in the machine room 2. The main ropes 5 are wound around the traction machine 4.

The car 6 is disposed inside the hoistway 1. The car 6 is suspended on one side of the main rope 5. The counterweight 7 is disposed inside the hoistway 1. The counterweight 7 is suspended on the other side of the main rope 5.

The landing door devices 8 are provided at the entrances of the landings 3. The car door apparatus 9 is provided at an entrance of the car 6.

The control device 10 is installed in the machine room 2. The control device 10 is electrically connected to the equipment of the hoisting machine 4 and the car 6. The control device 10 is provided to be able to perform overall control of the elevator.

The monitoring device 11 is installed in the machine room 2. The monitoring device 11 is electrically connected to the control device 10. The monitoring device 11 is provided so as to be able to monitor the state of the elevator based on information from the control device 10.

The information center apparatus 12 is installed at a place remote from a building where an elevator is installed. For example, the information center device 12 is installed in an elevator maintenance company. The information center device 12 is provided so as to be able to grasp the state of the elevator based on the information from the monitoring device 11.

Next, the car door apparatus 9 will be described with reference to fig. 2.

As shown in fig. 2, the car door apparatus 9 includes a pair of car doors 13, a pair of door hangers 14, a plurality of hanger rollers 15, door rails 16, a pair of opening/closing pulleys 17, an opening/closing belt 18, a pair of couplers 19, a transmission pulley 20, a motor 21, a transmission belt 22, a door control device 23, and a plurality of door guide shoes 24.

The pair of car doors 13 are provided at an entrance of the car 6 not shown in fig. 2. A pair of door hangers 14 are provided respectively at the upper portions of the pair of car doors 13. A first set of hanger rollers 15 is provided on an upper portion of one of the pair of door hangers 14. Second set of hanger rollers 15 is provided on the upper portion of the other of the pair of door hangers 14. The door rail 16 is disposed above the doorway of the car 6. Hanger rollers 15 roll along door rails 16. The upper portions of the pair of car doors 13 are guided by hanger rollers 15 and door rails 16 when opening and closing the doorway of the car 6. Door rail 16 supports a plurality of hanger rollers 15. The 1 st group door guide shoe 24 is provided at a lower portion of one of the pair of car doors 13. The 2 nd group door guide shoe 24 is provided at a lower portion of the other of the pair of car doors 13. The lower end portions of the plurality of door guide shoes 24 are fitted into groove portions of sills 25 provided at the lower portions of the pair of car doors 13. The lower portions of the pair of car doors 13 are guided by the groove portions of the door guide shoes 24 and the sills 25 when opening and closing the doorway of the car 6.

One of the pair of opening/closing pulleys 17 is provided above one side of the door rail 16. The other of the pair of opening and closing pulleys 17 is provided above the other side of the door rail 16. The opening/closing belt 18 is wound around the pair of opening/closing pulleys 17. One of the pair of links 19 connects one upper portion of one of the pair of door hangers 14 and the upper side of the opening/closing belt 18. The other of the pair of links 19 connects the upper portion of the other of the pair of door hangers 14 and the lower side of the opening/closing belt 18.

The transmission pulley 20 shares a rotation axis with the other of the pair of opening/closing pulleys 17. The motor 21 is disposed in the vicinity of the transmission pulley 20. The transmission belt 22 is wound around the transmission pulley 20 and the motor 21. The door control device 23 is provided in the vicinity of the motor 21. The door control device 23 is electrically connected to the motor 21.

When the door control device 23 rotates the motor 21, the transmission belt 22 moves cyclically following the rotation of the motor 21. The transmission pulley 20 rotates following the circulation of the transmission belt 22. The other of the pair of opening and closing pulleys 17 rotates following the rotation of the transmission pulley 20. The transmission belt 22 moves cyclically following the rotation of the other of the pair of opening and closing pulleys 17.

The pair of links 19 move in opposite directions following the circulation movement of the transmission belt 22. The pair of door hangers 14 move in opposite directions to each other following the movement of the pair of links 19. As a result, the pair of car doors 13 open and close the doorway of the car 6.

The car door apparatus 9 includes a plurality of light emitters 26 and a plurality of light receivers 27.

The plurality of light projectors 26 are provided in a row in the vertical direction on the door stop side of one of the pair of car doors 13. Each of the plurality of light projectors 26 is provided so as to be able to emit light in the horizontal direction toward the other of the pair of car doors 13.

The plurality of light receivers 27 are provided in a row in the vertical direction on the door stop side of the other of the pair of car doors 13. The heights of the light receivers 27 are set to be substantially the same as the heights of the light projectors 26. Each of the plurality of light receivers 27 is provided so as to be able to receive light emitted from each of the plurality of light emitters 26.

Although not shown, when an object is present between one of the pair of car doors 13 and the other of the pair of car doors 13 when the pair of car doors 13 are opened, light from one or some of the plurality of light projectors 26 is blocked by the object in a region in the height direction in which the object is present. As a result, in the region in the height direction where the object is present, any one or some of the plurality of light receivers 27 does not receive light.

At this time, the control device 10 not shown in fig. 2 recognizes that an object is present between one of the pair of car doors 13 and the other. The control device 10 causes the door control device 23 to open the pair of car doors 13.

Next, a method of determining the suspended state of the pair of car doors 13 will be described with reference to fig. 3 and 4.

Fig. 3 illustrates a method of determining a suspended state of a pair of car doors by the elevator control apparatus according to embodiment 1. Fig. 4 is a diagram showing the light receiving amounts of a plurality of light receivers of an elevator to which the elevator control device of embodiment 1 is applied.

As shown in fig. 3, the control device 10 includes a storage unit 10a and a determination unit 10 b.

The storage unit 10a stores information indicating the amount of light received by each of the plurality of light receivers 27 when the plurality of light emitters 26 emit light. The determination unit 10b determines the suspension state of the door based on the light receiving amount corresponding to the information stored in the storage unit 10 a. The storage unit 10a stores in advance information indicating the amount of light received by the plurality of light receivers 27 corresponding to the moving distance of the car door 13 when the plurality of light emitters 26 emit light in a normal suspended state. The determination unit 11b determines that there is an abnormality in the door suspension state when the light receiving amount of at least one of the plurality of light receivers 27 has decreased by a predetermined value or more at the time of diagnosis.

For example, in fig. 3, one upper portion of the car door 13 is tilted toward the landing 3 not shown in fig. 3. On the other hand, one lower portion of the car door 13 is tilted toward the inside of the car 6 not shown in fig. 3.

For example, there is almost no offset between the third light emitter 26 from below and the third light receiver 27 from below.

For example, the amount of offset between the second light projector 26 from the lower surface and the second light receiver 27 from the lower surface is larger than the amount of offset between the third light projector 26 from the lower surface and the third light receiver 27 from the lower surface. For example, the amount of offset between the lowermost light projector 26 and the lowermost light receiver 27 is larger than the amount of offset between the second light projector 26 from the lower surface and the second light receiver 27 from the lower surface.

For example, the amount of offset between the fourth light projector 26 from the lower surface and the fourth light receiver 27 from the lower surface is larger than the amount of offset between the third light projector 26 from the lower surface and the third light receiver 27 from the lower surface. For example, the amount of offset between the fifth light projector 26 from the lower surface and the fifth light receiver 27 from the lower surface is larger than the amount of offset between the fourth light projector 26 from the lower surface and the fourth light receiver 27 from the lower surface. For example, the offset between the uppermost light projector 26 and the uppermost light receiver 27 is larger than the offset between the fifth light projector 26 from the lower surface and the fifth light receiver 27 from the lower surface.

In this case, as shown in fig. 4, the light receiving amount of each of the plurality of light receivers 27 changes together with the moving distance of the car door 13 according to the offset amount of each of the plurality of light projectors 26.

For example, the light receiving amount of the third light receiver 27 from the bottom hardly changes even if the car door 13 moves.

For example, the light receiving amount of the second light receiver 27 from the bottom surface changes more largely following the movement of the car door 13 than the light receiving amount of the third light receiver 27 from the bottom surface. For example, the light receiving amount of the lowermost light receiver 27 changes more largely than the light receiving amount of the second light receiver 27 from the bottom following the movement of the car door 13.

For example, the light receiving amount of the fourth light receiver 27 from the bottom surface changes more largely than the light receiving amount of the third light receiver 27 from the bottom surface following the movement of the car door 13. For example, the light receiving amount of the fifth light receiver 27 from the bottom surface changes more largely following the movement of the car door 13 than the light receiving amount of the fourth light receiver 27 from the bottom surface. For example, the light receiving amount of the uppermost light receiver 27 changes more largely than the light receiving amount of the fifth light receiver 27 from the bottom following the movement of the car door 13.

The control device 10 not shown in fig. 4 determines a portion that needs to be adjusted in the suspended state of the pair of car doors 13, based on the variation in the change in the amount of light received at that time.

Next, an outline of the operation of the control device 10 will be described with reference to fig. 5.

In step S1, the control device 10 determines whether the pair of car doors 13 has started to close. If it is determined in step S1 that the pair of car doors 13 has not started to be closed, the control device 10 continues the operation of step S1. When it is determined in step S1 that the pair of car doors 13 has started to be closed, the control device 10 performs the operation of step S2.

In step S2, the control device 10 stores information indicating the change in the light receiving amount of each of the plurality of light receivers 27. After that, the control device 10 performs the operation of step S3.

In step S3, the control device 10 determines whether the suspension state of the pair of car doors 13 is normal based on the variation state of the change in the amount of light received by each of the plurality of light receivers 27.

If it is determined in step S3 that the suspended state of the pair of car doors 13 is normal, the control device 10 performs the operation of step S1. If it is determined in step S3 that the suspension state of the pair of car doors 13 is not normal, the control device 10 performs the operation of step S4.

In step S4, the control device 10 determines a portion that needs to be adjusted in the suspended state of the pair of car doors 13 based on the state of variation in the amount of light received by each of the plurality of light receivers 27. For example, when it is determined that there is variation in the change in the amount of light received only in the vicinity of the upper portion of the car door 13, the door hanger 14 (deterioration or deformation of the mounted state), the hanger roller 15 (deformation or damage), the door rail 16 (deformation or wear), and the like can be given as candidates for the adjustment location. For example, when it is determined that there is variation in the change in the amount of light received only in the vicinity of the lower portion of the car door 13, the adjustment positions include the door guide shoe 24 (deterioration, deformation, and wear of the mounted state), and the groove portion of the sill 25 (wear, mixing of foreign matter). For example, when it is determined that there is a variation in the change in the amount of received light only in the vicinity of the center portion of the car door 13, the car door 13 (deformation or damage) is set as a candidate for the adjustment location. After that, the control device 10 performs the operation of step S5.

In step S5, the control device 10 transmits information indicating the location that needs to be adjusted to the outside such as the information center device 12. After that, the control device 10 performs the operation of step S1.

According to the embodiment 1 described above, the control device 10 determines the suspended state of the pair of car doors 13 based on the change in the amount of light received by each of the plurality of light receivers 27. Therefore, the suspended state of the pair of car doors 13 can be easily grasped. As a result, the suspended state of the pair of car doors 13 can be readjusted in a short time.

Further, if the suspended state of the pair of car doors 13 is determined during door opening and closing during normal operation of the elevator or during door opening and closing during diagnostic operation performed according to a preset schedule, the suspended state of the pair of car doors 13 can be readjusted before a failure occurs in opening and closing of the pair of car doors 13.

Specifically, the control device 10 determines a portion that needs to be adjusted with respect to the suspended state of the pair of car doors 13 based on the variation in the change in the amount of light received by each of the plurality of light receivers 27. Therefore, the suspended state of the pair of car doors 13 can be grasped more accurately.

Further, the control device 10 transmits information indicating a portion that needs to be adjusted to the outside. Therefore, the suspended state of the pair of car doors 13 can be easily adjusted.

Further, the suspended state of the side door may be determined by the same method as embodiment 1. In this case, too, the suspended state of the door can be easily grasped.

In addition, the suspended state of the door of the elevator without the machine room 2 may be determined by the same method as in embodiment 1. In this case, too, the suspended state of the door can be easily grasped.

In embodiment 1, the suspension state of the car door 13 is diagnosed by the elevator control apparatus 10, but a diagnostic function may be provided in the monitoring apparatus 11. In this case, the elevator control device 10 may transmit the light receiving amount of each of the plurality of light receivers 27 to the monitoring device 11 when the door is opened or closed in the normal operation or when the door is opened or closed in the diagnostic operation.

Next, an example of the control device 10 will be described with reference to fig. 6.

The various functions of the control device 10 may be implemented by processing circuitry. For example, the processing circuitry is provided with at least one processor 28a and at least one memory 28 b. For example, the processing circuit is provided with at least one dedicated hardware 29.

In the case where the processing circuitry includes at least one processor 28a and at least one memory 28b, the functions of the control device 10 are implemented in software, firmware, or a combination of software and firmware. At least one of the software and the firmware is described as a program. At least one of software and firmware is stored in the at least one memory 28 b. The at least one processor 28a realizes the respective functions of the control device 10 by reading out and executing programs stored in the at least one memory 28 b. The at least one processor 28a is also referred to as a central processing unit, computing unit, microprocessor, microcomputer, or DSP. For example, the at least one Memory 28b is a nonvolatile or volatile semiconductor Memory such as a RAM (Random Access Memory), a ROM (Read Only Memory), a flash Memory, an EPROM (Erasable Programmable Read Only Memory), an EEPROM (Electrically Erasable Programmable Read Only Memory), a magnetic Disk, a flexible Disk, an optical Disk, a compact Disk (compact Disk), a mini Disk (mini disc), a DVD (Digital Versatile Disk), or the like.

In case the processing circuit is provided with at least one dedicated hardware 29, the processing circuit is for example realized by a single circuit, a composite circuit, a programmed processor, a parallel programmed processor, an ASIC, an FPGA or a combination thereof. For example, each function of the control device 10 is realized by a processing circuit. For example, the respective functions of the control device 10 are collectively realized by a processing circuit.

The functions of the control device 10 may be partially implemented by dedicated hardware 29 and partially implemented by software or firmware. For example, the function of the determination unit 10b may be realized by a processing circuit as dedicated hardware 29, and the functions other than the function of the determination unit 10b may be realized by at least one processor 28a reading out and executing a program stored in at least one memory 28 b.

In this way, the processing circuitry implements the functions of the control device 10 via hardware 29, software, firmware, or a combination thereof.

Although not shown, the functions of the monitoring device 11 are also realized by a processing circuit equivalent to the processing circuit that realizes the functions of the control device 10. The functions of the information center apparatus 12 are also realized by a processing circuit equivalent to the processing circuit for realizing the functions of the control apparatus 10.

Industrial applicability

As described above, the elevator control apparatus of the present invention can be used in a system for grasping the suspension state of a door.

Description of the reference symbols

1: a hoistway; 2: a machine room; 3: a landing; 4: a traction machine; 5: a main rope; 6: a car; 7: a counterweight; 8: a landing door device; 9: a car door device; 10: a control device; 10 a: a storage unit; 10 b: a determination unit; 11: a monitoring device; 12: an information center device; 13: a car door; 14: a door hanger; 15: a hanger roller; 16: a door rail; 17: a belt wheel for opening and closing; 18: an opening/closing belt; 19: a connecting piece; 20: a belt pulley for transmission; 21: a motor; 22: a belt for transmission; 23: a door control device; 24: a door guide shoe; 25: a sill; 26: a light projector; 27: a light receptor; 28 a: a processor; 28 b: a memory; 29: hardware.

Claims

1. An elevator control device, wherein the elevator control device comprises:

a storage unit that stores information indicating the amount of light received by each of a plurality of light receivers when a plurality of light emitters provided in a door of an elevator emit light; and

and a determination unit that determines a hanging state of the door based on the light receiving amount corresponding to the information stored in the storage unit.

2. The elevator control apparatus according to claim 1,

the determination unit determines a portion where adjustment of the suspended state of the door is necessary, based on the state of variation in the amount of light received by each of the plurality of light receivers.

3. The elevator control apparatus according to claim 2,

the determination unit, when determining a portion where the suspension state of the door needs to be adjusted, causes information indicating the portion to be transmitted to the outside.