Inspection device and inspection method for elevator governor system

Abstract

Disclosed is an inspection device for an elevator governor system capable of easily inspecting the operation of a governor system that detects the speed of a car by using a non-contact sensor. This inspection device for an elevator governor system inspects the operation of a governor system including: a non-contact sensor (2) provided in a car; and a safety control device (100) having a speed detection unit (101) that detects the speed of the car on the basis of a sensor signal of the non-contact sensor and outputs a detected speed signal, and allowing an emergency stop device to be operated when it is determined that the car is in an overspeed state on the basis of the detected speed signal, wherein a simulation speed generation unit (102) for generating a simulation speed signal simulating the detected speed signal is provided, and during the inspection, the safety control device determines an overspeed state of the car on the basis of the simulation speed signal.

Description

[Technical Field]

[0001] The present invention relates to an inspection device and an inspection method for inspecting the operation of an elevator governor system that activates an elevator emergency stop device. [Background technology]

[0002] An elevator system is equipped with a governor and an emergency stop device that constantly monitors the ascending and descending speed of a car and brings the car to an emergency stop if it reaches a predetermined overspeed. A governor rope connected to the car is wound around the governor pulley. When the car ascends or descends, the governor rope moves along with the car, causing the pulley to rotate. When the pulley rotates, a pendulum attached to the pulley swings due to centrifugal force. When the car reaches an overspeed state and the pendulum swings too much, the pendulum activates a gripping mechanism for the governor rope, restricting the movement of the governor rope. This activates the emergency stop device on the car side, bringing the car to an emergency stop.

[0003] In such elevator systems, the long governor rope is laid inside the hoistway, making it difficult to reduce space and costs. Furthermore, if the governor rope sways, it is likely to interfere with structures inside the hoistway.

[0004] In contrast to this, the technology described in Patent Document 1 is known as a conventional technology that does not use a mechanical governor as described above, but activates an emergency stop device based on the speed of the elevator car detected using a non-contact sensor.

[0005] In this prior art, when a monitoring device determines that there is an abnormality in the operating situation based on speed information from a car speed detection unit in a detection means for detecting the position and speed of the car, it outputs an activation signal to an emergency stop device. Furthermore, the position and speed detection device for a moving object described in Patent Document 1 (Fig. 15) detects the speed of the moving object based on images captured by a camera equipped on the moving object. If the moving object is an elevator, the images captured include the walls and pillars of the elevator shaft. [Prior art documents] [Patent documents]

[0006] [Patent Document 1] International Publication No. 2006 / 073015 Summary of the Invention [Problem to be solved by the invention]

[0007] Inspection of the operation of a mechanical governor can be performed without running the car by removing the governor rope from the pulley and rotating the pulley with a drive unit. However, in governor systems that use non-contact sensors to detect the speed of the car, the car must be accelerated to overspeed, which makes the inspection more complicated and takes longer.

[0008] Therefore, the present invention provides an inspection device and an inspection method for an elevator governor system that can easily inspect the operation of a governor system that detects the speed of a car using a non-contact sensor. [Means for solving the problem]

[0009] In order to solve the above problems, the inspection device for an elevator governor system according to the present invention inspects the operation of a governor system that includes a non-contact sensor provided in the car, a speed detection unit that detects the speed of the car based on a sensor signal from the non-contact sensor and outputs a detected speed signal, and a safety control device that activates an emergency stop device when it determines that the car is in an overspeed state based on the detected speed signal, and includes a simulated speed generation unit that generates a simulated speed signal that simulates the detected speed signal, and during inspection, the safety control device determines that the car is in an overspeed state based on the simulated speed signal.

[0010] In order to solve the above problems, the method for inspecting an elevator governor system according to the present invention is a method for inspecting the operation of a governor system that includes a non-contact sensor provided in a car, a speed detection unit that detects the speed of the car based on a sensor signal from the non-contact sensor and outputs a detected speed signal, and a safety control device that activates an emergency stop device when it determines that the car is in an overspeed state based on the detected speed signal, wherein a simulated speed signal that simulates the detected speed signal is generated while the car is held in a stopped state, and the safety control device determines that the car is in an overspeed state based on the simulated speed signal. [Effects of the Invention]

[0011] According to the present invention, the operation of the governor system can be easily inspected without causing the car to overspeed.

[0012] Problems, configurations, and effects other than those described above will become apparent from the following description of the embodiments. [Brief explanation of the drawings]

[0013] [Figure 1] 1 is a schematic configuration diagram of an elevator apparatus according to an embodiment; [Figure 2] FIG. 1 is a functional block diagram showing a configuration of a ropeless governor system in an embodiment. [Figure 3] 2 is a schematic diagram showing an example of an image of the exposed surface of the guide rail 7 (FIG. 1). FIG. [Figure 4] 10 is a flowchart showing a processing operation in an inspection operation mode of the safety control device of the embodiment. DETAILED DESCRIPTION OF THE INVENTION

[0014] Hereinafter, embodiments of the present invention will be described by way of example with reference to the drawings. In the drawings, the same reference numerals indicate the same components or components having similar functions.

[0015] FIG. 1 is a schematic diagram of an elevator system according to an embodiment of the present invention.

[0016] As shown in Fig. 1, the elevator system includes a car 1, a non-contact sensor 2, an electric operating device 3, a link mechanism 4, and an emergency stop device 5. In Fig. 1, the emergency stop device 5 is simply illustrated, and the detailed configuration of the emergency stop device 5 is omitted. Note that the emergency stop device 5 in this embodiment is based on publicly known technology.

[0017] The car 1 is suspended by a main rope (not shown) in a hoistway provided in a building, and is slidably engaged with a guide rail 7 via a guide device. When the main rope is frictionally driven by a drive device (hoisting machine: not shown), the car 1 moves up and down in the hoistway.

[0018] The non-contact sensor 2 is provided on the car 1. The non-contact sensor 2 is used to detect the position of the car 1 in the elevator shaft, and the ascent / descent speed of the car 1 is constantly detected from the detected position of the car 1. Therefore, the non-contact sensor 2 can be used to detect when the ascent / descent speed of the car exceeds a predetermined overspeed.

[0019] In this embodiment, the non-contact sensor 2 includes an image sensor, and detects the position and speed of the car 1 based on image information of the surface condition of the guide rail 7 acquired by the image sensor.

[0020] In this first embodiment, the electric operator 3 is an electromagnetic operator and is disposed on top of the car 1. The electromagnetic operator has a movable piece or movable rod driven by, for example, a solenoid or an electromagnet. The electric operator 3 has an electromagnet and is in an inactive state while the electromagnet is energized. When the non-contact sensor 2 detects that the car 1 is in a predetermined overspeed state, the power supply to the electromagnet is cut off. This causes the electric operator 3 to operate, displacing the link mechanism 4 and putting the emergency stop device 5 into a braking state.

[0021] The link mechanism 4 has a link shaft 40 driven by the electric operator 3, a lifting link 41 linked to the link shaft 40 so as to be interlocked with the link shaft 40, and a lifting rod 42 connected to the lifting link 41, and in response to the operation of the electric operator 3, the lifting rods 42 arranged on the left and right sides of the car 1 are lifted up almost simultaneously via the lifting link 41. As a result, when the brake shoe 51 of the safety device 5 attached to the lifting rod 42 is lifted up to the braking position, the brake shoe 51 clamps the guide rail 7.

[0022] The safety devices 5 are arranged one on each side of the car 1. The brakes 51 provided in the safety devices 5 are movable between a braking position and a non-braking position, and clamp the guide rail 7 in the braking position. When the brakes 51 clamping the guide rail 7 rise relative to the car 1 as the car 1 descends, a braking force is generated by the friction acting between the brakes 51 and the guide rail 7. As a result, the safety devices 5 are activated when the car 1 enters an overspeed state, and bring the car 1 to an emergency stop.

[0023] The elevator apparatus of this embodiment is equipped with a so-called ropeless governor system that does not use a governor rope. When the ascending or descending speed of the car 1 exceeds the rated speed and reaches a first overspeed (for example, a speed not exceeding 1.3 times the rated speed), the ropeless governor system cuts off the power to the drive device (hoisting machine) that drives the traction sheave around which the main rope is wound and the power to the control device that controls this drive device. Furthermore, when the descending speed of the car 1 reaches a second overspeed (for example, a speed not exceeding 1.4 times the rated speed), the ropeless governor system electrically drives the electric operating device 3 provided in the car 1 to activate the emergency stop device 5 and bring the car 1 to an emergency stop.

[0024] In this embodiment, the ropeless governor system is composed of a non-contact sensor 2 and a safety control device 100 (Fig. 1) that determines whether the car 1 is overspeeding based on the output signal of the non-contact sensor 2. In this embodiment, the safety control device 100 is provided on the car 1, as shown in Fig. 1.

[0025] The safety control device 100 measures the speed of the car 1 based on the sensor signal of the non-contact sensor 2, and when it determines that the measured speed has reached a first overspeed, it outputs a command signal to cut off the power supply to the drive device (hoisting machine) and the power supply to the control device that controls this drive device. Furthermore, when it determines that the measured speed has reached a second overspeed, the safety control device 100 outputs a command signal to drive the electric operating device 3.

[0026] As will be described later, the safety control device 100 has a function of inspecting the operation of a ropeless governor system that detects the speed of the car 1 using the non-contact sensor 2.

[0027] FIG. 2 is a functional block diagram showing the configuration of the ropeless governor system in this embodiment.

[0028] The safety control device 100 includes a speed detection unit 101, a simulated speed generation unit 102, an inspection mode detection unit 105, an inspection mode switching unit 106, an overspeed determination unit 107, a drive power cut-off command unit 108, and an electromagnet power cut-off command unit 109.

[0029] In this embodiment, the safety control device 100 includes a computer system such as a microcomputer, and the computer system executes a predetermined program to operate as each unit.

[0030] First, the normal operation of the ropeless governor system, ie, its operation as a governor, will be described.

[0031] The speed detection unit 101 acquires a sensor signal from the non-contact sensor 2, and detects the speed of the car 1 based on the acquired sensor signal by image signal processing.

[0032] In this embodiment, as will be described later, the speed detection unit 101 calculates the speed from the moving distance of the image feature amount of the surface condition of the guide rail 7 in a predetermined time.

[0033] The speed detection unit 101 outputs a detected speed signal indicating the detected speed of the car 1 to the overspeed determination unit 107 via the inspection mode detection unit 105.

[0034] The inspection mode detection unit 105 connects either the output of the speed detection unit 101 or the output of a simulated speed generation unit 102 (described later) to the input of an overspeed determination unit 107. During normal operation of the ropeless governor system, the inspection mode detection unit 105 connects the output of the speed detection unit 101 to the input of the overspeed determination unit 107.

[0035] The overspeed determination unit 107 determines whether the detected speed of the car 1 indicated by the detected speed signal input from the speed detection unit 101 is equal to or greater than a first overspeed. When the overspeed determination unit 107 determines that the detected speed is equal to or greater than the first overspeed, it sends the determination result to the drive power cutoff command unit 108.

[0036] When the drive power cutoff command unit 108 receives the determination result from the overspeed determination unit 107, it outputs a command signal to cut off the power supplies to the hoisting machine and the control device 60.

[0037] Moreover, the overspeed determination unit 107 determines whether the detected speed is equal to or greater than the second overspeed. If the overspeed determination unit 107 determines that the detected speed is equal to or greater than the second overspeed, it sends the determination result to the electromagnet power cutoff command unit 109.

[0038] When receiving the determination result from the overspeed determination unit 107, the electromagnet power supply cutoff command unit 109 outputs a command signal to cut off the power supply to the electromagnet of the electric operator 3 (FIG. 1) in the electric safety device.

[0039] Next, the operation of the ropeless governor system during inspection will be described.

[0040] The maintenance terminal device 200 is communicably connected to the safety control device 100. The maintenance terminal device 200 is configured by a personal computer or the like.

[0041] The maintenance terminal device 200 sends a command signal to the safety control device 100 via the inspection mode command unit 201 to command the safety control device 100 to switch from the normal operation mode to the inspection operation mode. The maintenance terminal device 200 also sends a command signal to the simulated speed generation unit 102, which will be described later, to command the start of operation.

[0042] When the inspection mode switching unit 106 in the safety control device 100 receives a command signal from the maintenance terminal device 200, it commands the inspection mode detection unit 105 to connect the output of the simulated speed generation unit 102 to the input of the overspeed determination unit 107. In response to the command from the inspection mode switching unit 106, the inspection mode detection unit 105 disconnects the connection between the output of the speed detection unit 101 and the input of the overspeed determination unit 107, and connects the output of the simulated speed generation unit 102 to the input of the overspeed determination unit 107.

[0043] The simulated speed generating unit 102 generates a simulated speed signal S for inspection, which simulates the detected speed S, independently of the detected speed signal S output by the speed detecting unit 101. S Generate.

[0044] The simulated speed generating unit 102 has a speed pattern setting unit 104 in which a speed pattern is set in advance from when the car 1 starts accelerating from zero speed until it reaches an overspeed state of the second overspeed or more that activates the safety device. The speed signal generating unit 103 in the simulated speed generating unit 102 generates a simulated speed signal S that simulates the detected speed signal S obtained when the car 1 runs according to this speed pattern. S Generate.

[0045] In this embodiment, the car 1 is kept stopped during the operation inspection of the ropeless governor system.

[0046] The simulated speed generating unit 102 generates a simulated speed signal S S is output to the overspeed determination unit 107 via the inspection mode detection unit 105.

[0047] The overspeed determination unit 107 determines whether the simulated speed input from the simulated speed generation unit 102 is equal to or greater than the first overspeed. When the overspeed determination unit 107 determines that the simulated speed is equal to or greater than the first overspeed, it sends the determination result and the value of the simulated speed to the maintenance terminal device 200. As a result, the maintenance terminal device 200 detects that the ropeless governor system will perform a predetermined operation when the speed of the car 1 reaches the first overspeed, and also detects the speed of the car 1 at that time.

[0048] The maintenance terminal device 200 displays the judgment result received from the overspeed judgment unit 107 and the simulated speed value on a speed display unit 202 equipped with a display device such as a liquid crystal display.

[0049] Furthermore, the overspeed determination unit 107 determines whether the simulated speed input from the simulated speed generation unit 102 is equal to or greater than the second overspeed. If the overspeed determination unit 107 determines that the simulated speed is equal to or greater than the second overspeed, it sends the determination result and the value of the simulated speed to the maintenance terminal device 200. As a result, the maintenance terminal device 200 detects that the ropeless governor system will perform a predetermined operation when the speed of the car 1 reaches the second overspeed, and also detects the speed of the car 1 at that time. In this case as well, the maintenance terminal device 200 displays the determination result and the value of the simulated speed received from the overspeed determination unit 107 on the speed display unit 202.

[0050] In the inspection operation mode, the overspeed determination unit 107 does not send a determination result to the drive power supply cutoff command unit 108 and the electromagnet power supply cutoff command unit 109. Therefore, the car 1 is not brought to an emergency stop. Note that the drive power supply cutoff command unit 108 and the electromagnet power supply cutoff command unit 109 may be configured to invalidate the determination result.

[0051] FIG. 3 is a schematic diagram showing an example of an image of the exposed surface of the guide rail 7 (FIG. 1).

[0052] Hereinafter, the speed detection means in the speed detection unit 101 (FIG. 2) will be described with reference to FIG.

[0053] Figure 3 shows an image I(t) at time t and an image I(t+Δt) at time t+Δt (Δt: frame period) acquired by the non-contact sensor 2 (Figures 1 and 2). Both are images of the exposed surface of the steel material that makes up the guide rail 7, and show a brightness distribution pattern that indicates the unevenness distribution on the exposed surface of the steel material. Note that between time t and time t+Δt, the elevator car 1 (Figure 1) is descending.

[0054] Because the car 1 is moving, an image shift d occurs between image I(t) and image I(t+Δt), as shown in FIG. 3. Note that in FIG. 3, because the car 1 is descending, an image shift d occurs in the upward direction in the image frame. In the first embodiment, this image shift d is calculated by comparing image I(t) and image I(t+Δt) using an image correlation method. In this case, image I(t) or a part thereof (for example, the part at position P in FIG. 3) is moved by a predetermined amount in the image frame along the longitudinal direction of the guide rail 7, and the correlation function value between the moved image I(t) and image I(t+Δt) is calculated. The total movement amount of image I(t) when the correlation function value is maximum is taken as the image shift d.

[0055] The image shift d corresponds to the amount of movement of the car 1 over time Δt (the amount of descent in Figure 3). Furthermore, the direction in which the image shifts within the image frame indicates the direction of movement (upward or downward) of the car 1. Therefore, if the image shift is set to positive or negative depending on the direction of image shift, for example, if the downward direction (upward direction) is set to positive and the upward direction (downward direction) is set to negative, the image shift d can be calculated every Δt and integrated with the car position at start-up to measure the current car position. Furthermore, the speed v of the car 1 can be calculated from d and Δt (v = (d / Δt)).

[0056] The speed detection unit 101 outputs a detected speed signal S indicating the calculated speed v of the car 1. The simulated speed generation unit 102 generates a simulated speed signal S simulating such a detected speed S. S Output.

[0057] It is preferable that the guide rail 7 is surface-finished by polishing or the like to create an uneven surface. It is also preferable that the non-contact sensor 2 is provided with a light source that illuminates the surface of the guide rail 7. These features improve the accuracy of measuring the car position.

[0058] FIG. 4 is a flowchart showing the processing operation in the inspection operation mode of the safety control device 100 of this embodiment.

[0059] In this embodiment, a maintenance engineer uses a maintenance terminal device 200 on a car 1 equipped with a safety control device 100 to inspect the operation of the ropeless governor system. At this time, the operation mode of the elevator system is set to a maintenance operation mode. In the maintenance operation mode, the maintenance engineer manually operates a maintenance operation panel equipped on the car 1, but in this embodiment, the car 1 is kept stopped.

[0060] The maintenance engineer connects the maintenance terminal device 200 to the safety controller 100 via a communication line so that they can communicate with each other. Next, the maintenance engineer operates the maintenance terminal device 200 to switch the operation mode of the safety controller 100 from the normal operation mode to the inspection operation mode.

[0061] When the safety control device 100 starts processing operations, first, in step S1, the maintenance technician operates the maintenance terminal device 200 while keeping the elevator car 1 stopped, to instruct the safety control device 100 to generate a simulated speed signal.

[0062] In step S2, the safety control device 100 generates a simulated speed signal S using the simulated speed generation unit 102. S Generate.

[0063] Next, in step S3, the safety control device 100 uses the overspeed determination unit 107 to generate a simulated speed signal S SThe safety control device 100 determines whether the simulated speed of the car 1 indicated by is equal to or greater than the first overspeed. If the safety control device 100 determines that the simulated speed is not equal to or greater than the first overspeed (NO in step S3), it executes the processing from step S2 onwards again. If the safety control device 100 determines that the simulated speed is equal to or greater than the first overspeed (YES in step S3), it then executes step S4.

[0064] In step S4, the safety control device 100 uses the overspeed determination unit 107 to output first overspeed data, including the value of the simulated speed determined in step S3 to be equal to or greater than the first overspeed, to the maintenance terminal device 200. The maintenance terminal device 200 uses the speed display unit 202 to display the first overspeed data on a display device provided in the maintenance terminal device 200. This allows the maintenance technician to confirm that the ropeless governor system will perform a predetermined operation when the speed of the car 1 reaches the first overspeed. After executing step S4, the safety control device 100 then executes step S5.

[0065] In step S5, the safety control device 100 generates a simulated speed signal S using the simulated speed generation unit 102. S Generate.

[0066] Next, in step S6, the safety control device 100 uses the overspeed determination unit 107 to generate a simulated speed signal S S The safety control device 100 determines whether the simulated speed of the car 1 indicated by is equal to or greater than the second overspeed. If the safety control device 100 determines that the simulated speed is not equal to or greater than the second overspeed (NO in step S6), it executes the processing from step S5 onwards again. If the safety control device 100 determines that the simulated speed is equal to or greater than the second overspeed (YES in step S6), it then executes step S7.

[0067] In step S7, the safety control device 100 uses the overspeed determination unit 107 to output second overspeed data including the value of the simulated speed determined in step S6 to be equal to or greater than the second overspeed to the maintenance terminal device 200. The maintenance terminal device 200 uses the speed display unit 202 to display the second overspeed data on a display device provided in the maintenance terminal device 200. This allows the maintenance engineer to confirm that the ropeless governor system will perform a predetermined operation when the speed of the car 1 reaches the second overspeed.

[0068] When the safety controller 100 executes step S7, the safety controller 100 ends the series of processes.

[0069] As described above, according to this embodiment, the operation of the ropeless governor system can be inspected by stopping the car 1 without causing the car 1 to overspeed. Therefore, the operation of the ropeless governor system that detects the car speed using a non-contact sensor can be easily inspected.

[0070] The non-contact sensor 2 may detect a barcode or a predetermined pattern containing position information in the height direction in the elevator shaft. In this case, the barcode or the predetermined pattern is set on the surface of a long object to be detected, such as a tape.

[0071] Alternatively, a magnetic sensor may be used as the non-contact sensor, in which case the object to be detected is a long member, such as a tape, magnetized with a pattern containing position information. In addition, the speed detection unit 101 may detect the position of the elevator car 1 by comparing image information of the surface condition of the guide rail 7 stored in advance in a storage device with image information obtained from the sensor signal, and further measure the speed of the elevator car 1 by calculating the change in the detected position over time.

[0072] The present invention is not limited to the above-described embodiments, but includes various modifications. For example, the above-described embodiments have been described in detail to clearly explain the present invention, and the present invention is not necessarily limited to those including all of the described configurations. Furthermore, it is possible to add, delete, or replace part of the configuration of the embodiments with other configurations.

[0073] For example, the electric operating device 3 may be provided not only above the car 1 but also below or to one side of the car 1. The elevator system may have a machine room, or may be a so-called machine room-less elevator. [Explanation of symbols]

[0074] 1...car, 2...non-contact sensor, 3...electric operating device, 4...link mechanism, 5...emergency stop device, 7...guide rail, 40...link shaft, 41...lifting link, 42...lifting rod, 51...brake, 60...hoisting machine and control device, 100...safety control device, 101...speed detection unit, 102...simulated speed generation unit, 103...speed signal generation unit, 104...speed pattern setting unit, 105...inspection mode detection unit, 106...inspection mode switching unit, 107...overspeed determination unit, 108...drive power supply cut-off command unit, 109...electromagnet power supply cut-off command unit, 200...maintenance terminal device, 201...inspection mode command unit, 202...speed display unit

Claims

1. An inspection device for an elevator governor system that inspects the operation of a governor system including: a non-contact sensor provided in a car; a safety control device that has a speed detection unit that detects the speed of the car based on a sensor signal of the non-contact sensor and outputs a detected speed signal, and that activates an emergency stop device when it determines that the car is in an overspeed state based on the detected speed signal, the safety control device cuts off power supplies to the drive device and the control device when determining a first overspeed of the car based on the detected speed signal, and puts the safety stop device into a braking state when determining a second overspeed of the car based on the detected speed signal, a simulated speed generating unit that generates a simulated speed signal that simulates the detected speed signal obtained when the elevator car travels from zero speed to the overspeed state in which the safety device operates, During inspection, the safety control device determines the first overspeed and the second overspeed of the elevator car based on the simulated speed signal, During the inspection, Even if the safety control device determines the first overspeed of the elevator car based on the simulated speed signal, the power supplies of the drive device and the control device are not cut off, an inspection device for an elevator governor system, wherein the safety control device does not put the emergency stop device into the braking state even if the safety control device determines the second overspeed of the elevator car based on the simulated speed signal.

5. 2. The elevator governor system inspection device according to claim 1, The safety control device includes: an overspeed determination unit that receives the detected speed signal as an input and determines the first overspeed and the second overspeed of the elevator car; a maintenance terminal device is communicably connected to the safety control device during the inspection; the maintenance terminal device has an inspection mode command unit that sends a command signal to the safety control device to command switching from a normal operation mode to an inspection operation mode, The safety control device includes: an inspection mode detection unit that connects either an output of the speed detection unit or an output of the simulated speed generation unit to an input of the overspeed determination unit; an inspection mode switching unit that, upon receiving the command signal from the maintenance terminal device, commands the inspection mode detection unit to connect the output of the simulated speed generation unit and the input of the overspeed determination unit; An inspection device for an elevator governor system, comprising:

6. 2. The elevator governor system inspection device according to claim 1, The speed detection unit detects the car speed based on image information of the surface condition of the guide rail acquired by the non-contact sensor.

7. An inspection method for an elevator governor system for inspecting the operation of a governor system including: a non-contact sensor provided in a car; a speed detection unit that detects the speed of the car based on a sensor signal of the non-contact sensor and outputs a detected speed signal; and a safety control device that activates an emergency stop device when it determines that the car is in an overspeed state based on the detected speed signal, the safety control device cuts off power supplies to the drive device and the control device when determining a first overspeed of the car based on the detected speed signal, and puts the safety stop device into a braking state when determining a second overspeed of the car based on the detected speed signal, generating a simulated speed signal that simulates the detected speed signal obtained when the elevator car travels from zero speed to the overspeed state in which the safety device operates; During inspection, the safety control device determines the first overspeed and the second overspeed of the elevator car based on the simulated speed signal, During the inspection, Even if the safety control device determines the first overspeed of the elevator car based on the simulated speed signal, the power supplies of the drive device and the control device are not cut off, a safety control device that determines the second overspeed of the elevator car based on the simulated speed signal, but does not place the emergency stop device in the braking state;

8. 2. The elevator governor system inspection device according to claim 1, An inspection device for an elevator governor system, wherein the elevator car is maintained in a stopped state during the inspection.

9. 2. The elevator governor system inspection device according to claim 1, The safety control device is characterized in that it includes the simulated speed generation unit.

Images