CN119095783A - Inspection device and inspection method for elevator speed governor system - Google Patents
Inspection device and inspection method for elevator speed governor system Download PDFInfo
- Publication number
- CN119095783A CN119095783A CN202280096029.7A CN202280096029A CN119095783A CN 119095783 A CN119095783 A CN 119095783A CN 202280096029 A CN202280096029 A CN 202280096029A CN 119095783 A CN119095783 A CN 119095783A
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- speed
- car
- governor system
- overspeed
- inspection
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- 238000007689 inspection Methods 0.000 title claims abstract description 56
- 238000000034 method Methods 0.000 title claims description 13
- SAZUGELZHZOXHB-UHFFFAOYSA-N acecarbromal Chemical compound CCC(Br)(CC)C(=O)NC(=O)NC(C)=O SAZUGELZHZOXHB-UHFFFAOYSA-N 0.000 claims abstract description 10
- 238000004088 simulation Methods 0.000 claims abstract 10
- 238000001514 detection method Methods 0.000 claims description 17
- 238000012423 maintenance Methods 0.000 description 33
- 230000007246 mechanism Effects 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 238000012545 processing Methods 0.000 description 4
- 230000008569 process Effects 0.000 description 3
- 230000008878 coupling Effects 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 2
- 238000005859 coupling reaction Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000003028 elevating effect Effects 0.000 description 2
- 230000004044 response Effects 0.000 description 2
- 239000000725 suspension Substances 0.000 description 2
- 230000005856 abnormality Effects 0.000 description 1
- 238000007792 addition Methods 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000012217 deletion Methods 0.000 description 1
- 230000037430 deletion Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000004973 liquid crystal related substance Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012806 monitoring device Methods 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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
- B66B5/04—Applications of checking, fault-correcting, or safety devices in elevators responsive to abnormal operating conditions for detecting excessive speed
- B66B5/06—Applications of checking, fault-correcting, or safety devices in elevators responsive to abnormal operating conditions for detecting excessive speed electrical
Landscapes
- Maintenance And Inspection Apparatuses For Elevators (AREA)
Abstract
Disclosed is an inspection device for an elevator governor system, which can easily inspect the operation of a governor system that detects the speed of a car using a non-contact sensor. The inspection device for an elevator governor system is provided with a non-contact sensor (2) provided in the car, and a safety control device (100) for detecting the speed of the car based on the sensor signal of the non-contact sensor, and for operating the emergency stop device when the overspeed state of the car is determined based on the detected speed, and is provided with a simulation speed generation unit (102) for generating a simulation speed greater than the detected speed based on the detected speed, and for determining the overspeed state of the car based on the simulation speed during inspection.
Description
Technical Field
The present invention relates to an inspection device and an inspection method for inspecting operation of an elevator governor system for operating an emergency stop device for an elevator.
Background
An elevator apparatus is provided with a governor and an emergency stop device for constantly monitoring the lifting speed of a car and for emergency stopping the car in a predetermined overspeed state. A speed regulator sling combined with the lift car is wound around the pulley of the speed regulator. If the car is lifted, the governor rope moves together with the car, and the sheave rotates. When the pulley rotates, the vibrator provided to the pulley vibrates due to centrifugal force. If the car is in an overspeed state and the vibration of the vibrator is increased, the gripping mechanism of the speed regulator sling is operated by the vibrator to restrict the movement of the speed regulator sling. Thus, the emergency stop device on the car side is operated, and the car is stopped in an emergency.
In such an elevator apparatus, since the governor rope as a long object is laid in the hoistway, it is difficult to save space and reduce cost. In addition, when the governor rope vibrates, the structure in the elevating path and the governor rope are liable to interfere with each other.
In contrast, the technology described in patent document 1 is known as a prior art in which the emergency stop device is operated based on the speed of the car detected by the non-contact sensor without using the mechanical governor described above.
In the present prior art, the monitoring device outputs an operation signal to the emergency stop device when it is determined that there is an abnormality in the operation state based on speed information from a car speed detecting unit in a detecting unit that detects the position and speed of the car. The position/velocity detection device for a moving body described in patent document 1 (fig. 15) detects the velocity of the moving body based on an image captured by a camera provided in the moving body. In the case where the moving object is an elevator, the wall and column of the hoistway are photographed.
Prior art literature
Patent literature
Patent document 1 International publication No. 2006/073015
Disclosure of Invention
Problems to be solved by the invention
In the inspection of the operation of the mechanical governor, the inspection can be performed without running the car by removing the governor rope from the sheave and rotating the sheave by the driving device. However, in a governor system that detects the speed of a car using a non-contact sensor, it is necessary to accelerate the car to an overspeed state, which complicates the inspection and increases the inspection time.
Accordingly, the present invention provides an inspection device and an inspection method for an elevator governor system, which can easily inspect the operation of the governor system that detects the speed of a car using a non-contact sensor.
Means for solving the problems
In order to solve the above problems, an inspection device for an elevator governor system according to the present invention inspects operation of a governor system including a non-contact sensor provided in a car, and a safety control device that detects a speed of the car based on a sensor signal of the non-contact sensor, and operates an emergency stop device when an overspeed state of the car is determined based on the detected speed, the inspection device for an elevator governor system including an analog speed generation unit that generates an analog speed greater than the detected speed based on the detected speed, and the safety control device determines the overspeed state of the car based on the analog speed at the time of inspection.
In order to solve the above problems, an inspection method of an elevator governor system according to the present invention inspects operation of a governor system including a non-contact sensor provided in a car, and a safety control device that detects a speed of the car based on a sensor signal of the non-contact sensor, and if an overspeed state of the car is determined based on the detected speed, operates an emergency stop device, wherein the inspection method of the elevator governor system operates the car in a speed range equal to or less than a rated speed, and generates an analog speed greater than the detected speed based on the detected speed, and the safety control device determines the overspeed state of the car based on the analog speed.
ADVANTAGEOUS EFFECTS OF INVENTION
According to the present invention, the operation of the governor system can be easily checked without setting the car to an overspeed state.
The problems, structures, and effects other than those described above will be apparent from the following description of the embodiments.
Drawings
Fig. 1 is a schematic configuration diagram of an elevator apparatus according to an embodiment.
Fig. 2 is a functional block diagram showing the structure of the ropeless governor system in the embodiment.
Fig. 3 is a flowchart showing a processing operation in the inspection operation mode of the safety control device according to the embodiment.
Detailed Description
Hereinafter, embodiments of the present invention will be described by way of examples and with reference to the accompanying drawings. In the drawings, elements having the same reference numerals indicate the same components or components having similar functions.
Fig. 1 is a schematic configuration diagram of an elevator apparatus according to an embodiment of the present invention.
As shown in fig. 1, the elevator apparatus includes a car 1, a non-contact sensor 2, an electric operator 3, a link mechanism 4, and an emergency stop device 5. In fig. 1, the emergency stop device 5 is schematically illustrated, and the detailed structure of the emergency stop device 5 is omitted. The emergency stop device 5 in the present embodiment is based on a known technique.
The car 1 is suspended by a main sling (not shown) in a hoistway provided in a building, and slidably engages with the guide rail 7 via a guide device. When the main suspension rope is friction-driven by a driving device (hoist: not shown), the car 1 is lifted and lowered in the hoistway.
The non-contact sensor 2 is provided in the car 1. The position of the car 1 in the hoistway is detected using the non-contact sensor 2, and the lifting speed of the car 1 is always detected based on the detected position of the car 1. Therefore, the non-contact sensor 2 can be used to detect that the lifting speed of the car exceeds a given overspeed.
In the present embodiment, the non-contact sensor 2 includes an image sensor, and detects the position and the speed of the car 1 based on image information of the surface state of the guide rail 7 acquired by the image sensor.
In this embodiment 1, the electric actuator 3 is an electromagnetic actuator and is disposed above the car 1. The electromagnetic actuator includes, for example, a movable piece or a movable rod driven by a solenoid or an electromagnet. The electric operator 3 includes an electromagnet, and the electromagnet is in a non-operating state during energization. When a predetermined overspeed state of the car 1 is detected by the non-contact sensor 2, the electromagnet is powered off. Thereby, the electric actuator 3 is operated to displace the link mechanism 4 to bring the emergency stop device 5 into a braking state.
The link mechanism 4 includes a coupling rod 40 driven by the electric operator 3, a pull-up link 41 coupled to the coupling rod 40 so as to be able to be linked, and a pull-up lever 42 coupled to the pull-up link 41, and pulls up the pull-up levers 42 arranged on the left and right sides of the car 1 via the pull-up link 41 in response to an operation of the electric operator 3. Thus, when the brake piece 51 of the emergency stop device 5 attached to the upper link 42 is pulled up to the braking position, the brake piece 51 clamps the guide rail 7.
The emergency stop devices 5 are disposed one on each of the left and right sides of the car 1. The brake 51 of the emergency stop device 5 is movable between a braking position and a non-braking position, and clamps the guide rail 7 in the braking position. When the brake 51 having the guide rail 7 interposed therebetween is raised relative to the car 1 by the descent of the car 1, a braking force is generated by a frictional force acting between the brake 51 and the guide rail 7. Thus, the emergency stop device 5 operates when the car 1 falls into an overspeed state, and the car 1 is stopped in an emergency.
The elevator apparatus of the present embodiment includes a so-called ropeless governor system that does not use a governor rope. If the lifting speed of the car 1 exceeds the rated speed and reaches the 1 st overspeed (for example, a speed not exceeding 1.3 times the rated speed), the ropeless governor system cuts off the power supply to the driving device (hoisting machine) driving the traction sheave wound around the main rope and the power supply to the control device controlling the driving device. When the descent speed of the car 1 reaches the 2 nd overspeed (for example, a speed not exceeding 1.4 times the rated speed), the sling-free governor system electrically drives the electric actuator 3 provided to the car 1 to operate the emergency stop device 5, thereby emergency-stopping the car 1.
In the present embodiment, the ropeless governor system is constituted by a non-contact sensor 2 and a safety control device 100 (fig. 1) that determines an overspeed state of the car 1 based on an output signal of the non-contact sensor 2. In the present embodiment, as shown in fig. 1, a safety control device 100 is provided in a car 1.
The safety control device 100 measures the speed of the car 1 based on the sensor signal of the non-contact sensor 2, and if it is determined that the measured speed reaches the 1 st overspeed, outputs a command signal for shutting off the power supply to the drive device (hoisting machine) and the power supply to the control device that controls the drive device. When the safety control device 100 determines that the measured speed reaches the 2 nd overspeed, it outputs a command signal for driving the electric actuator 3.
As will be described later, the safety control device 100 has a function of checking the operation of the ropeless governor system that detects the speed of the car 1 using the non-contact sensor 2.
Fig. 2 is a functional block diagram showing the structure of the ropeless governor system according to this embodiment.
The safety control device 100 includes a speed detecting unit 101, an analog speed generating unit 102, an inspection mode detecting unit 105, an inspection mode switching unit 106, an overspeed determining unit 107, a drive power off command unit 108, and an electromagnet power off command unit 109.
In the present embodiment, the safety control device 100 includes a computer system such as a microcomputer, and the computer system operates as each unit by executing a predetermined program.
First, a normal operation of the ropeless governor system, that is, an operation as a governor will be described.
The speed detecting unit 101 acquires a sensor signal from the non-contact sensor 2, and detects the speed of the car 1 by image signal processing based on the acquired sensor signal.
For example, the speed detection unit 101 calculates the speed from the moving distance of the image feature amount of the surface state of the guide rail 7 in a predetermined time. Further, for example, the speed detecting unit 101 detects the position of the car 1 by comparing the image information of the surface state of the guide rail 7 stored in advance in the storage device with the image information obtained from the sensor signal, and further calculates the time change of the detected position to measure the speed of the car 1.
The speed detection unit 101 outputs the detected speed of the car 1 to the overspeed determination unit 107 via the inspection mode detection unit 105.
The inspection pattern detection unit 105 connects any one of the outputs of the speed detection unit 101 and the analog speed generation unit 102 described later to the input of the overspeed determination unit 107. In the normal operation of the ropeless governor system, the inspection mode detecting unit 105 connects the output of the speed detecting unit 101 to the input of the overspeed determining unit 107.
The overspeed determining section 107 determines whether or not the detected speed input from the speed detecting section 101 is equal to or greater than the 1 st overspeed. When the overspeed determining section 107 determines that the detected speed is equal to or greater than the 1 st overspeed, the determination result is sent to the drive power supply interruption command section 108.
Upon receiving the determination result from the overspeed determining section 107, the drive power supply interruption command section 108 outputs a command signal for interrupting the power supply to the hoisting machine and the control device 60.
The overspeed determining section 107 determines whether or not the detected speed input from the speed detecting section 101 is equal to or greater than the 2 nd overspeed. When the overspeed determining section 107 determines that the detected speed is equal to or higher than the 2 nd overspeed, the determination result is sent to the electromagnet power shutoff command section 109.
Upon receiving the determination result from the overspeed determining section 107, the electromagnet power supply interruption command section 109 outputs a command signal for interrupting the power supply to the electromagnet of the electric operator 3 (fig. 1) in the electric emergency stop device.
Next, an operation of the ropeless governor system at the time of inspection will be described.
The maintenance terminal device 200 is communicably connected to the safety control device 100. The maintenance terminal device 200 is constituted by a personal computer or the like.
The maintenance terminal device 200 transmits a command signal for commanding switching from the normal operation mode to the inspection operation mode to the safety control device 100 by the inspection mode command unit 201.
Upon receiving the command signal from the maintenance terminal device 200, the inspection mode switching unit 106 in the safety control device 100 instructs the inspection mode detecting unit 105 to connect the output of the analog speed generating unit 102 to the input of the overspeed determining unit 107. The inspection mode detecting unit 105 releases the connection between the output of the speed detecting unit 101 and the input of the overspeed judging unit 107 in response to the instruction of the inspection mode switching unit 106, and connects the output of the analog speed generating unit 102 and the input of the overspeed judging unit 107.
The simulated speed generation unit 102 generates a simulated speed for inspection by multiplying the detected speed of the car 1 output from the speed detection unit 101 by a constant using the proportioner 103.
Since the non-contact sensor 2 is provided in the car 1, the detected speed output by the speed detecting unit 101 may include a vibration component associated with the vibration of the car 1 due to the elasticity of the main rope. In the analog velocity generation unit 102, the vibration component is also set to be a constant multiple. Therefore, in the present embodiment, the vibration component of the analog velocity output by the proportioner 103 is removed by the low-pass filter 104. The analog velocity generation unit 102 outputs an analog velocity from which the vibration component is removed. Thereby, the reliability of inspection of the slingless governor system is improved.
In the operation inspection of the ropeless governor system, the car 1 is operated in a speed range equal to or lower than the rated speed. The constant K is set so that the speed after the given speed in the speed range is K times is equal to the above-mentioned 2 nd overspeed (0 < given speed +.nominal speed, k×given speed=2 nd overspeed). This makes it possible to check the operation of the ropeless governor system while the car 1 is traveling at a speed equal to or lower than the rated speed.
The cut-off frequency of the low-pass filter 104 is set to the natural frequency of the vibration system constituted by the main suspension and the car 1. The length of the main rope constituting the vibration system varies depending on the position of the car 1, and therefore the natural frequency varies. Therefore, it is preferable to set the cutoff frequency to the minimum natural frequency.
The simulated speed generation unit 102 outputs the simulated speed of the car 1 to the overspeed determination unit 107 via the inspection mode detection unit 105.
The overspeed determining section 107 determines whether the simulated speed input from the simulated speed generating section 102 is equal to or greater than the 1 st overspeed. When the overspeed determining section 107 determines that the simulated speed is equal to or greater than the 1 st overspeed, the determination result and the value of the simulated speed are transmitted to the maintenance terminal device 200. Thus, the maintenance terminal device 200 detects that the sling-free governor system is performing a predetermined operation when the speed of the car 1 reaches the 1 st overspeed, and the speed of the car 1 at that time.
The maintenance terminal device 200 displays the determination result received from the overspeed determination unit 107 and the value of the analog speed by the speed display unit 202 provided with a display device such as a liquid crystal display.
Further, the overspeed determining section 107 determines whether the simulated speed input from the simulated speed generating section 102 is equal to or greater than the 2 nd overspeed. When the overspeed determining section 107 determines that the simulated speed is equal to or greater than the 2 nd overspeed, the determination result and the value of the simulated speed are transmitted to the maintenance terminal device 200. Thus, the maintenance terminal device 200 detects that the sling-free governor system performs a predetermined operation when the speed of the car 1 reaches the 2 nd overspeed, and the speed of the car 1 at that time. In this case, the maintenance terminal device 200 also displays the determination result received from the overspeed determination unit 107 and the value of the analog speed on the overspeed display unit 202.
In the inspection operation mode, the overspeed determining section 107 does not transmit the determination result to the driving power supply interruption command section 108 and the electromagnet power supply interruption command section 109. Therefore, the car 1 is not stopped urgently. In addition, the determination result may be invalidated in the drive power supply shutoff command unit 108 and the electromagnet power supply shutoff command unit 109.
Fig. 3 is a flowchart showing a processing operation in the inspection operation mode of the safety control device 100 according to the present embodiment.
In the present embodiment, a maintenance technician uses the maintenance terminal device 200 to check the operation of the ropeless governor system on the car 1 provided with the safety controller 100. At this time, the operation mode of the elevator apparatus is set to the maintenance operation mode. In the maintenance operation mode, a maintenance technician manually operates a maintenance operation panel provided in the car 1 to run the car 1 at a speed lower than the rated speed.
The maintenance technician connects the maintenance terminal device 200 to the safety control device 100 via a communication line. Next, the maintenance technician operates the maintenance terminal device 200 to switch the operation mode of the safety control device 100 from the normal operation mode to the inspection operation mode.
When the safety control device 100 starts the processing operation, first, in step S1, the maintenance technician operates the maintenance operation panel to start the car 1 traveling. When the car 1 starts traveling, the car accelerates in a speed range lower than the rated speed.
In step S2, the safety control device 100 acquires a sensor signal from the non-contact sensor 2.
Next, in step S3, the safety control device 100 detects the speed of the car 1 based on the sensor signal acquired in step S1 using the speed detection unit 101.
Next, in step S4, the safety control device 100 calculates the simulated speed for inspection by multiplying the detected speed of the car 1 obtained in step S3 by a constant using the proportioner 103 in the simulated speed generating unit 102.
Next, in step S5, the safety control device 100 filters the analog velocity calculated in step S4 using the low-pass filter 104 in the analog velocity generation unit 102.
Next, in step S6, the safety control device 100 uses the overspeed determining section 107 to determine whether the analog speed filtered in step S5 is equal to or greater than the 1 st overspeed. When the safety control device 100 determines that the simulated speed is not equal to or greater than the 1 st overspeed (no in step S6), the process of step S2 and subsequent steps is executed again. When the safety control device 100 determines that the simulated speed is equal to or greater than the 1 st overspeed (yes in step S6), it proceeds to step S7.
In step S7, the safety control device 100 outputs the 1 st overspeed data including the value of the simulated speed determined to be the 1 st overspeed or more in step S6 to the maintenance terminal device 200 using the overspeed determination section 107. The maintenance terminal device 200 uses the speed display unit 202 to display the 1 st overspeed data on the display device provided in the maintenance terminal device 200. Thus, if the speed of the car 1 reaches the 1 st overspeed, the maintenance technician confirms that the ropeless governor system is performing a given operation. After executing step S7, the safety control device 100 executes step S8.
In step S8, the safety control device 100 acquires a sensor signal from the non-contact sensor 2.
Next, in step S9, the safety control device 100 detects the speed of the car 1 based on the sensor signal acquired in step S8 using the speed detection unit 101.
Next, in step S10, the safety control device 100 calculates the simulated speed for inspection by multiplying the detected speed of the car 1 obtained in step S9 by a constant using the proportioner 103 in the simulated speed generating unit 102.
Next, in step S11, the safety control device 100 filters the analog velocity calculated in step S10 using the low-pass filter 104 in the analog velocity generation unit 102.
Next, in step S12, the safety control device 100 uses the overspeed determining section 107 to determine whether the analog speed filtered in step S11 is equal to or greater than the 2 nd overspeed. When the safety control device 100 determines that the simulated speed is not equal to or greater than the 2 nd overspeed (no in step S12), the process of step S8 and subsequent steps is executed again. When the safety control device 100 determines that the simulated speed is equal to or greater than the 2 nd overspeed (yes in step S12), it proceeds to step S13.
In step S13, the safety control device 100 outputs the 2 nd overspeed data including the value of the simulated speed determined to be the 2 nd overspeed or more in step S12 to the maintenance terminal device 200 using the overspeed determination section 107. The maintenance terminal device 200 uses the speed display unit 202 to display the 2 nd overspeed data on the display device provided in the maintenance terminal device 200. Thus, if the speed of the car 1 reaches the 2 nd overspeed, the maintenance technician confirms that the ropeless governor system performs a given operation. After executing step S13, the safety control device 100 executes step S14.
In step S14, the maintenance technician operates the maintenance operation panel to stop the travel of the car 1. When the car 1 stops, the safety control device 100 ends the series of processes.
As described above, according to the present embodiment, the operation of the ropeless governor system can be checked by running the car 1 at a low speed equal to or lower than the rated speed without setting the car to an overspeed state. Therefore, the operation of the ropeless governor system that detects the speed of the car using the non-contact sensor can be easily checked.
The noncontact sensor 2 can detect a bar code or a predetermined pattern including positional information in the height direction in the elevating path. In this case, the bar code or the predetermined pattern is provided on the surface of the strip-shaped object such as a belt.
Further, as the noncontact sensor, a magnetic sensor may be used. In this case, as the object, a strip-shaped member such as a belt magnetized in a pattern including position information can be used.
The present invention is not limited to the above-described embodiments, and includes various modifications. For example, the foregoing embodiments are described in detail for the purpose of easily understanding the present invention, and are not necessarily limited to the configuration having all the descriptions. In addition, with respect to a part of the structure of the embodiment, addition, deletion, and substitution of other structures can be performed.
For example, the electric actuator 3 may be provided not only in the upper part of the car 1 but also in the lower part and the side part. The elevator apparatus may have a machine room, or may be a so-called machine-room-less elevator.
Description of the reference numerals
Car, 2..non-contact sensor, 3..electric operator, 4..link mechanism, 5..emergency device, 7..guide rail, 40..link shaft, 41..pull-up link, 42..pull-up lever, 51..brake, 60..traction machine and control device, 100..safety control device, 101..speed detection unit, 102..analog speed generation unit, and control method a scaler, 104, a low-pass filter, 105, an inspection mode detection unit, 106, an inspection mode switching unit, 107, an overspeed determination unit, 108, a drive power supply shutoff instruction unit, 109, an electromagnet power supply shutoff instruction unit, 200, a maintenance terminal device, 201, an inspection mode instruction unit, and 202, a speed display unit.
Claims (7)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/JP2022/021582 WO2023228362A1 (en) | 2022-05-26 | 2022-05-26 | Elevator governor system inspection device and inspection method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN119095783A true CN119095783A (en) | 2024-12-06 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202280096029.7A Pending CN119095783A (en) | 2022-05-26 | 2022-05-26 | Inspection device and inspection method for elevator speed governor system |
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| Country | Link |
|---|---|
| JP (1) | JPWO2023228362A1 (en) |
| CN (1) | CN119095783A (en) |
| WO (1) | WO2023228362A1 (en) |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1989060B (en) * | 2005-01-04 | 2011-02-16 | 三菱电机株式会社 | Elevator bolt detecting device, elevator system, and mover position/speed detecting device |
| CN202229909U (en) * | 2011-08-21 | 2012-05-23 | 上海龙钰电梯配件有限公司 | Debugging device of speed limiter |
| JP5755580B2 (en) * | 2012-02-08 | 2015-07-29 | 株式会社日立製作所 | Speed detection apparatus, elevator apparatus equipped with the speed detection apparatus, and elevator apparatus inspection method |
| JP6272199B2 (en) * | 2014-09-26 | 2018-01-31 | 株式会社日立製作所 | Elevator apparatus and electronic safety system inspection method for elevator apparatus |
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2022
- 2022-05-26 JP JP2024522831A patent/JPWO2023228362A1/ja active Pending
- 2022-05-26 CN CN202280096029.7A patent/CN119095783A/en active Pending
- 2022-05-26 WO PCT/JP2022/021582 patent/WO2023228362A1/en active Application Filing
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| JPWO2023228362A1 (en) | 2023-11-30 |
| WO2023228362A1 (en) | 2023-11-30 |
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