CN111479766A - Elevator control device for enabling elevator car to function as scaffold - Google Patents
Elevator control device for enabling elevator car to function as scaffold Download PDFInfo
- Publication number
- CN111479766A CN111479766A CN201880079742.4A CN201880079742A CN111479766A CN 111479766 A CN111479766 A CN 111479766A CN 201880079742 A CN201880079742 A CN 201880079742A CN 111479766 A CN111479766 A CN 111479766A
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- China
- Prior art keywords
- elevator
- car
- control device
- operation mode
- hoisting machine
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- 238000001514 detection method Methods 0.000 claims description 19
- 230000006870 function Effects 0.000 description 12
- 238000012423 maintenance Methods 0.000 description 10
- 238000004891 communication Methods 0.000 description 6
- 238000010586 diagram Methods 0.000 description 4
- 239000006096 absorbing agent Substances 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000000873 masking effect Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
- B66B5/00—Applications of checking, fault-correcting, or safety devices in elevators
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
- B66B5/00—Applications of checking, fault-correcting, or safety devices in elevators
- B66B5/02—Applications of checking, fault-correcting, or safety devices in elevators responsive to abnormal operating conditions
- B66B5/16—Braking or catch devices operating between cars, cages, or skips and fixed guide elements or surfaces in hoistway or well
- B66B5/18—Braking or catch devices operating between cars, cages, or skips and fixed guide elements or surfaces in hoistway or well and applying frictional retarding forces
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Maintenance And Inspection Apparatuses For Elevators (AREA)
Abstract
The invention provides an elevator control device, which can keep a car in a stable state when an operator works on the car without using special equipment. An elevator control device is provided with: an operation mode determination unit which determines an operation mode of the elevator; and a control unit that, when the operation mode determination unit determines that the operation mode of the elevator is an on-car work site operation mode, causes the car of the elevator to travel in a direction in which the emergency stop device of the elevator operates when the emergency stop device of the elevator is operable.
Description
Technical Field
The present invention relates to an elevator control device that causes a car to function as a scaffold.
Background
For example, patent document 1 discloses an elevator. According to this elevator, when performing work on the car, it is possible to prevent the worker from forgetting to wear the seat belt.
Documents of the prior art
Patent document
Patent document 1: japanese patent laid-open publication No. 2016 + 188132
Disclosure of Invention
Problems to be solved by the invention
However, in the elevator described in patent document 1, when a heavy object exceeding the braking performance of the hoisting machine is installed or replaced, it is necessary to separately prepare a table, a chain block, and the like. Therefore, the working time becomes long, and the cost required for the work also increases.
The present invention has been made to solve the above problems. The invention aims to provide an elevator control device, which can keep a car in a stable state when an operator works on the car without using special equipment.
Means for solving the problems
An elevator control device of the present invention includes: an operation mode determination unit which determines an operation mode of the elevator; and a control unit that, when the operation mode determination unit determines that the operation mode of the elevator is an on-car work site operation mode, causes the car of the elevator to travel in a direction in which the emergency stop device of the elevator operates when the emergency stop device of the elevator is operable.
Effects of the invention
According to the present invention, when the operation mode of the elevator is the on-car work site operation mode, the emergency stop device operates. Therefore, the car can be maintained in a stable state when the operator performs work on the car without using special equipment.
Drawings
Fig. 1 is a configuration diagram of an elevator to which an elevator control device according to embodiment 1 is applied.
Fig. 2 is a flowchart for explaining an outline of the operation of the elevator control device in embodiment 1.
Fig. 3 is a hardware configuration diagram of a main part of an elevator control device in 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 portion is appropriately simplified or omitted.
Embodiment 1.
Fig. 1 is a configuration diagram of an elevator to which an elevator control device according to embodiment 1 is applied.
The elevator of fig. 1 is a machine room-less elevator. In this elevator, a hoistway 1 penetrates each floor of a building. The hoisting machine 2 is provided at an upper portion of the hoistway 1. The sheave 3 is mounted on a rotating shaft of the hoisting machine 2. The main ropes 4 are wound around the sheave 3.
The pair of car-side guide rails 5 are provided inside the hoistway 1. A pair of counterweight-side guide rails, not shown, are provided inside the hoistway 1.
The car 6 is disposed inside the hoistway 1. The car 6 is guided by a pair of car-side guide rails 5. The car 6 is supported by one side of the main rope 4. The counterweight 7 is disposed inside the hoistway 1. The counterweight 7 is guided by a pair of counterweight side guide rails. The counterweight 7 is supported on the other side of the main rope 4.
The car-side buffer 8 is provided below the car 6 at the bottom of the hoistway 1. The counterweight-side shock absorber 9 is provided below the counterweight 7 at the bottom of the hoistway 1.
The governor 10 is provided in an upper part of the hoistway 1. The tension pulley 11 is disposed at a lower portion of the hoistway 1. The governor rope 12 is looped around the governor 10 and the tension sheave 11. The governor encoder 13 is provided on the rotational shaft of the governor 10. The governor encoder 13 outputs a signal in accordance with the rotation of the governor 10.
The safety device 14 is a pair of gripping devices and is provided at a lower portion of the car 6. The safety device 14 is provided so as to be able to prevent the movement of the car 6 by gripping the pair of car-side guide rails 5 during operation.
The connecting rod 15 is disposed below the car 6. The connecting rod 15 is configured to span from one side to the other side of the pair of gripping devices. The lifting rod 16 is provided on the other side of the pair of car-side rails 5 on the side of the car 6. The lower side of the lifting rod 16 is connected to the other side of the connecting rod 15. The upper side of the lift lever 16 is disposed above the car 6. The upper side of the lifting bar 16 is connected to the governor rope 12. The emergency stop switch 14a is provided near the lift lever 16. The emergency stop switch 14a is set to be turned off when the lift lever 16 is lifted. When the emergency stop switch 14a is turned off, the safety circuit is cut off. As a result, the elevator becomes inoperable.
The control device 17 is provided directly below the hoisting machine 2 in the upper part of the hoistway 1. The control device 17 is electrically connected to the hoisting machine 2 via a 1 st communication line 18. The control device 17 is electrically connected to the speed governor 10 via a 2 nd communication line 19. The control device 17 includes an operation mode determination unit 17a, a hoisting machine torque detection unit 17b, a governor encoder output detection unit 17c, and a control unit 17 d.
The operation mode determination unit 17a is provided to determine the operation mode of the elevator. The hoisting machine torque detection unit 17b is provided to be able to detect the torque of the hoisting machine 2. The governor encoder output detection unit 17c is provided to be able to detect the output of the governor encoder 13. The control unit 17d is provided to control the entire elevator in accordance with the operation mode of the elevator.
When the operation mode of the elevator is the normal mode, the control device 17 rotates the hoisting machine 2 in accordance with the call of the elevator. When the traction machine 2 rotates, the sheave 3 rotates. When the sheave 3 rotates, the main rope 4 moves. When the main ropes 4 move, the car 6 and the counterweight 7 ascend and descend in directions opposite to each other. At this time, the governor 10 rotates in accordance with the travel of the car 6.
In the maintenance of the elevator, the maintenance terminal 20 is electrically connected to the control device 17 via a maintenance communication line 21. In this state, the worker performs maintenance of the elevator using the maintenance terminal 20.
In the maintenance of the elevator, for example, when the replacement work of the hoisting machine 2 or the control device 17 is performed, the operation mode of the elevator is switched to the on-car-site operation mode by the maintenance terminal 20. When the operation mode of the elevator is switched to the on-car work site operation mode, the operation mode determination unit 17a determines that the operation mode of the elevator is the on-car work site operation mode. At this time, the control section 17d moves the car 6 to a position above the car 6, which is the working position, according to a preset condition. For example, the control unit 17d moves the car 6 to the upper part of the hoistway 1 in accordance with the setting of the maintenance terminal 20. For example, the control unit 17d moves the car 6 to the upper part of the hoistway 1 in response to an operation of a manual switch, not shown.
In this state, the worker on the car 6 lifts the lifting lever 16 by a predetermined method. When the lift lever 16 is lifted, the connecting rod 15 changes the state of the emergency stop device 14 so that the emergency stop device 14 can be operated.
The control portion 17d moves the car 6 in a direction in which the safety device 14 operates at a position on the car 6 which becomes the working position. Specifically, the control unit 17d operates the hoisting machine 2 so that the car 6 travels downward. Then, when the emergency stop device 14 operates normally, the car 6 stops. As a result, the governor 10 also stops. Then, similarly, the hoisting machine 2 continues to operate. At this time, the main ropes 4 slip out with respect to the sheave 3.
In this state, the control unit 17d determines whether or not the emergency stop device 14 is operated based on the detection result of the hoisting machine torque detection unit 17b and the detection result of the governor encoder output detection unit 17 c. Specifically, when the detected value of the hoisting machine torque detecting unit 17b becomes constant after increasing and the detected value of the governor encoder output detecting unit 17c does not change, the control unit 17d determines that the safety device 14 is operated.
When determining that the emergency stop device 14 is operating, the control unit 17d notifies information indicating that fact. For example, the control unit 17d transmits information indicating that the emergency stop device 14 has operated to the maintenance terminal 20.
After confirming the operation of the emergency stop device 14, the operator performs maintenance work on the car 6. For example, the worker replaces the hoisting machine 2. For example, the operator replaces the control device 17.
Next, an outline of the operation of the control device 17 will be described with reference to fig. 2.
Fig. 2 is a flowchart for explaining an outline of the operation of the elevator control device in embodiment 1.
In step S1, the control device 17 determines whether or not the operation mode of the elevator is the on-car work site operation mode.
If it is determined in step S1 that the operation mode of the elevator is not the on-car work site operation mode, the control device 17 ends the operation.
If it is determined in step S1 that the operation mode of the elevator is the on-car work site operation mode, the control device 17 performs the operation of step S2. In step S2, the control device 17 confirms that the emergency stop device 14 is set to the operable state. For example, the control device 17 checks that the emergency stop switch 14a is turned off.
Then, the control device 17 performs the operation of step S3. In step S3, the control device 17 temporarily sets the off state of the emergency stop switch 14a to the on state by masking or the like, and moves the car 6 in the direction in which the emergency stop device 14 operates.
Then, the control device 17 performs the operation of step S4. In step S4, the control device 17 determines whether or not the torque of the hoisting machine 2 has stabilized at a constant value after the increase. If it is determined in step S4 that the torque of the hoisting machine 2 has not stabilized at the constant value after increasing, the control device 17 continues the operation of step S4. If it is determined in step S4 that the torque of the hoisting machine 2 has increased and has stabilized at the constant value, the control device 17 performs the operation of step S5.
In step S5, the control device 17 determines whether the output of the governor encoder 13 is changing. When it is determined in step S5 that the output of the governor encoder 13 is changing, the control device 17 continues the operation of step S5. When it is determined in step S5 that the output of the governor encoder 13 is not changing, the control device 17 performs the operation of step S6. In step S6, the control device 17 determines that the emergency stop device 14 is operated. Then, the controller 17 releases the on state of the emergency stop switch 14a, returns it to the off state, and ends the operation.
According to embodiment 1 described above, when the operation mode of the elevator is the on-car work site operation mode, the emergency stop device operates. Therefore, when the worker works on the car 6, the car 6 can be kept in a stable state as a scaffold. As a result, a heavy object exceeding the braking performance of the hoisting machine 2 can be mounted on or replaced on the car 6.
In this case, it is not necessary to separately prepare a table, a chain pulley, and the like. Therefore, the work can be performed in a short time at low cost.
When the detected value of the hoisting machine torque detecting unit 17b becomes constant after increasing and the detected value of the governor encoder output detecting unit 17c does not change, the control unit 17d determines that the safety device 14 is operated. Therefore, it can be confirmed that the emergency stop device 14 is reliably operated.
In the case where the governor encoder 13 is not provided, it is only necessary to determine that the emergency stop device 14 is operated when the detection value of the hoisting machine torque detection unit 17b increases and becomes constant. In this case, it is also possible to confirm that the emergency stop device 14 is operated.
The lift lever 16 may be manually lifted from the outside of the hoistway 1 by a rope or the like. In this case, the safety device 14 can be reliably operated.
In addition, the lifting lever 16 may be automatically lifted using a driving device such as a motor, an electromagnet, or an actuator. In this case, the safety device 14 can be reliably operated.
Further, the lift lever 16 may be lifted by moving the car 6 downward while stopping the rotation of the governor 10 using a braking device or the like. In this case, the safety device 14 can be reliably operated.
In addition, the same control as that in embodiment 1 can be performed for an elevator having a machine room. In this case as well, the car 6 can be kept in a stable state when work is performed on the car 6.
Next, an example of a main portion of the control device 17 will be described with reference to fig. 3.
Fig. 3 is a hardware configuration diagram of a main part of an elevator control device in embodiment 1.
The functions of the main part of the control device 17 may be implemented by processing circuitry. For example, the processing circuit is provided with at least one processor 22a and at least one memory 22 b. For example, the processing circuit is provided with at least one dedicated hardware 23.
In the case of a processing circuit provided with at least one processor 22a and at least one memory 22b, the functions of the main part of the control device 17 are implemented by 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 the software and firmware is stored in the at least one memory 22 b. The at least one processor 22a realizes the respective functions of the main part of the control device 17 by reading out and executing the programs stored in the at least one memory 22 b. The at least one processor 22a is also referred to as a central processing unit, a processing unit, an arithmetic unit, a microprocessor, a microcomputer, or a DSP. For example, the at least one Memory 22b 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 CD (compact disk), a mini disk (mini disc), a DVD (Digital versatile disc), or the like.
In the case where the processing circuit includes at least one dedicated hardware 23, the processing circuit is realized by, for example, a single circuit, a composite circuit, a programmed processor, a parallel programmed processor, an ASIC (Application Specific integrated circuit), an FPGA (Field Programmable Gate Array), or a combination thereof. For example, the respective functions of the main part of the control device 17 may be realized by processing circuits, respectively. For example, the functions of the main part of the control device 17 may be realized by the processing circuit in a unified manner.
The functions of the main part of the control device 17 may be partly implemented by dedicated hardware 23 and partly implemented by software or firmware. For example, the function of the operation mode determination unit 17a may be realized by a processing circuit as dedicated hardware 23, and the function other than the function of the operation mode determination unit 17a may be realized by at least one processor 22a reading and executing a program stored in at least one memory 22 b.
In this way, the processing circuit realizes the respective functions of the main part of the control device 17 by hardware 23, software, firmware, or a combination thereof.
Industrial applicability
As described above, the elevator control device of the present invention can be applied to a system for maintaining the car of an elevator in a stable state.
Description of the reference symbols
1: a hoistway; 2: a traction machine; 3: a sheave; 4: a main rope; 5: a car side guide rail; 6: a car; 7: a counterweight; 8: a car-side buffer; 9: a counterweight-side buffer; 10: a speed limiter; 11: a tension wheel; 12: a governor rope; 13: a speed limiter encoder; 14: an emergency stop device; 14 a: an emergency stop switch; 15: a connecting rod; 16: a lifting bar; 17: a control device; 17 a: an operation mode determination unit; 17 b: a tractor torque detection unit; 17 c: a speed limiter encoder output detection section; 17 d: a control unit; 18: 1 st communication line; 19: a 2 nd communication line; 20: maintaining the terminal; 21: maintaining the communication line; 22 a: a processor; 22 b: a memory; 23: hardware.
Claims (3)
1. An elevator control device, wherein the elevator control device comprises:
an operation mode determination unit which determines an operation mode of the elevator; and
and a control unit that, when the operation mode determination unit determines that the operation mode of the elevator is an on-car work site operation mode, causes the car of the elevator to travel in a direction in which the emergency stop device of the elevator operates when the emergency stop device of the elevator is operable.
2. The elevator control apparatus according to claim 1,
the elevator control device is provided with a tractor torque detection part which detects the torque of the tractor of the elevator,
the control unit determines that the safety device is operated when the detected value of the hoisting machine torque detection unit is increased and becomes constant after the car travels.
3. The elevator control apparatus according to claim 1,
the elevator control device is provided with:
a hoisting machine torque detection unit that detects a torque of a hoisting machine of the elevator; and
a governor encoder output detection unit that detects an output of a governor encoder that detects rotation of a governor that rotates in accordance with travel of the car,
the control unit determines that the safety device has operated when the detected value of the hoisting machine torque detection unit becomes constant after increasing the detected value of the hoisting machine torque detection unit after the car has traveled and the detected value of the governor encoder output detection unit does not change any more.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/JP2018/015095 WO2019198153A1 (en) | 2018-04-10 | 2018-04-10 | Elevator control device enabling car to function as scaffold |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111479766A true CN111479766A (en) | 2020-07-31 |
Family
ID=63668416
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201880079742.4A Pending CN111479766A (en) | 2018-04-10 | 2018-04-10 | Elevator control device for enabling elevator car to function as scaffold |
Country Status (3)
| Country | Link |
|---|---|
| JP (1) | JP6394849B1 (en) |
| CN (1) | CN111479766A (en) |
| WO (1) | WO2019198153A1 (en) |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06239558A (en) * | 1993-02-17 | 1994-08-30 | Hitachi Building Syst Eng & Service Co Ltd | Operation device during work and maintenance of elevator emergency stop device |
| JPH092750A (en) * | 1995-06-19 | 1997-01-07 | Mitsubishi Denki Bill Techno Service Kk | Elevator provided with car locking device |
| JP2000203774A (en) * | 1998-11-12 | 2000-07-25 | Toshiba Corp | Stop locking device for elevator car |
| CN1676454A (en) * | 2004-04-02 | 2005-10-05 | 株式会社日立制作所 | Elevator device |
| JP2007008611A (en) * | 2005-06-28 | 2007-01-18 | Mitsubishi Electric Corp | Elevator device and inspection method for elevator |
| CN101024465A (en) * | 2006-02-20 | 2007-08-29 | 株式会社日立制作所 | Elevator testing method and its assistant device and elevator device |
| CN101072723A (en) * | 2004-12-03 | 2007-11-14 | 奥蒂斯电梯公司 | Safety device for use in an elevator system |
| CN101932520A (en) * | 2008-04-08 | 2010-12-29 | 三菱电机株式会社 | Elevator device and method of testing the same |
| JP2014061968A (en) * | 2012-09-20 | 2014-04-10 | Fujitec Co Ltd | Fixing device of elevator |
-
2018
- 2018-04-10 WO PCT/JP2018/015095 patent/WO2019198153A1/en active Application Filing
- 2018-04-10 CN CN201880079742.4A patent/CN111479766A/en active Pending
- 2018-04-10 JP JP2018534984A patent/JP6394849B1/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06239558A (en) * | 1993-02-17 | 1994-08-30 | Hitachi Building Syst Eng & Service Co Ltd | Operation device during work and maintenance of elevator emergency stop device |
| JPH092750A (en) * | 1995-06-19 | 1997-01-07 | Mitsubishi Denki Bill Techno Service Kk | Elevator provided with car locking device |
| JP2000203774A (en) * | 1998-11-12 | 2000-07-25 | Toshiba Corp | Stop locking device for elevator car |
| CN1676454A (en) * | 2004-04-02 | 2005-10-05 | 株式会社日立制作所 | Elevator device |
| CN101072723A (en) * | 2004-12-03 | 2007-11-14 | 奥蒂斯电梯公司 | Safety device for use in an elevator system |
| JP2007008611A (en) * | 2005-06-28 | 2007-01-18 | Mitsubishi Electric Corp | Elevator device and inspection method for elevator |
| CN101024465A (en) * | 2006-02-20 | 2007-08-29 | 株式会社日立制作所 | Elevator testing method and its assistant device and elevator device |
| CN101932520A (en) * | 2008-04-08 | 2010-12-29 | 三菱电机株式会社 | Elevator device and method of testing the same |
| JP2014061968A (en) * | 2012-09-20 | 2014-04-10 | Fujitec Co Ltd | Fixing device of elevator |
Also Published As
| Publication number | Publication date |
|---|---|
| JPWO2019198153A1 (en) | 2020-04-30 |
| WO2019198153A1 (en) | 2019-10-17 |
| JP6394849B1 (en) | 2018-09-26 |
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