WO2015015626A1

WO2015015626A1 - Elevator controller

Info

Publication number: WO2015015626A1
Application number: PCT/JP2013/070956
Authority: WO
Inventors: 雄大田中; 中山　徹也; 薫平野
Original assignee: 株式会社日立製作所
Priority date: 2013-08-02
Filing date: 2013-08-02
Publication date: 2015-02-05
Also published as: JPWO2015015626A1; JP6014261B2; CN105683078A; CN105683078B

Abstract

　In order to provide an elevator device capable of detecting that a second speed-governing mechanism cannot control speed due to a fault in a one-way clutch, etc., the present invention is provided with: a riding cage (300) into which passengers get on board; a speed governing rope (1) connected to a lift, including the riding cage (300), for ascending and descending inside a hoistway (200); a sheave (4); a rotating shaft (3) fixed to the sheave (4); a first speed governor (A) provided with a first rotor (A1); a clutch (5) for transmitting rotation when the riding cage (300) descends and stopping the transmission of rotation when the riding cage (300) ascends; and a second speed governor (B) provided with a second rotor (B1), the present invention being provided, in the second rotor (B1), with synchronous rotors (61, 71) rotating in synchronism with the operation of the second rotor (B1), and provided with rotation detection sensors (62, 72) for detecting the rotation of the synchronous rotors (61, 71), the rotating state of the synchronous rotors (61, 71) being monitored by the rotation detection sensors (62, 72).

Description

Elevator equipment

The present invention relates to an elevator apparatus, and more particularly, to an elevator apparatus provided with a speed governor that can set an overspeed during an ascending operation and an overspeed during a descending operation to different values.

Elevator devices are generally equipped with a governor that constantly monitors the ascending / descending speed of the car and makes the car emergency stop when the car falls into a predetermined overspeed state. Specifically, the speed governor, when the raising / lowering speed of the car exceeds the rated speed and reaches the first overspeed (usually 1.3 times the rated speed), the power supply of the hoisting machine that drives the car, and this Each power supply of the control device that controls the hoisting machine is shut off. In addition, when the speed at which the car descends exceeds the first overspeed and reaches the second overspeed (usually 1.4 times the rated speed) for some reason, the governor turns off the emergency stop device provided on the car. Operate and mechanically stop the car.

In recent years, there has been a demand for an elevator apparatus in which the rated speed in the descending direction is set lower than the rated speed in the ascending direction and the feeling of ear closure is reduced. As such an elevator apparatus, an elevator apparatus described in Japanese Patent Laid-Open No. 2000-327241 (Patent Document 1) has been proposed.

Patent Document 1 discloses a speed control rope connected to an elevator car, a sheave around which the speed control rope is wound, a first speed control mechanism that controls the rotational speed of the sheave, and a sheave. A speed control device including a second speed control mechanism that is connected to the horizontal shaft of the main shaft via a clutch mechanism and adjusts the rotational speed of the sheave when the rotational force of the sheave is transmitted is described. In Patent Document 1, when the sheave rotates normally (when the elevator car is lowered), the clutch mechanism transmits the rotational force of the sheave to the second speed governor and reverses (when the elevator car is raised). In this case, the transmission of the rotational force is canceled, the first speed governing mechanism detects the overspeed at the time of ascending, the second speed governing mechanism detects the overspeed at the time of descending, and the moving direction of the elevator car Depending on the system, different values of overspeed can be detected.

JP 2000-327241 A

Patent Document 1 exemplifies a one-way clutch as a clutch mechanism. The conventional technique has no failure detection function for the one-way clutch, and cannot detect a failure of the one-way clutch. Therefore, even if the one-way clutch broke down and the governor's speed control function was lost, the elevator continued to operate, and the elevator abnormality could not be detected.

The rotating body of the second speed governing mechanism releases the rotation of the horizontal shaft of the sheave by the clutch mechanism during the elevator ascending operation, but the transmission is released when the clutch mechanism of the one-way clutch becomes stiff The shaft power is transmitted to the rotating body of the second speed control mechanism that should have been operated, and the second speed control mechanism enters the speed control state. In particular, the descending overspeed set in the second governing mechanism is set smaller than the ascending overspeed set in the first governing mechanism. If the rotation is transmitted to the second speed control mechanism due to a one-way clutch failure, the overspeed state may be detected erroneously, and the elevator may stop abnormally.

On the other hand, during the elevator descent operation, the rotating body of the second speed control mechanism transmits the rotation of the horizontal shaft of the sheave by the one-way clutch, but if the one-way clutch becomes unable to transmit the shaft rotation due to failure, There is a possibility that the rotating body of the second speed control mechanism is not in the speed control state and cannot detect the overspeed state of the elevator.

An object of the present invention is to detect that the second speed control mechanism is erroneously in a speed control state due to a failure of the one-way clutch during the elevator operation, and in addition, during the elevator operation, the one-way clutch. It is an object of the present invention to provide an elevator apparatus that can sense that the second speed governing mechanism has not been able to control the speed due to a failure of the above.

In order to achieve the above object, an elevator apparatus according to the present invention includes a car for riding on a passenger, a speed control rope connected to a lifting body that moves up and down in a hoistway including the car, and the speed control A sheave around which a rope is wound, a rotating shaft fixed to the sheave, and a first shaft that is fixed to the rotating shaft and detects the overspeed of the car from the rotating speed of the sheave to adjust the speed. A first speed governor provided with a rotating body of: a clutch that transmits the rotation of the sheave when the car is lowered, and the clutch that releases the rotation of the sheave when the car is raised; A second speed governor including a second rotating body that is fixed to the rotating shaft via the clutch and detects the overspeed of the car from the rotational speed of the sheave to adjust the speed. In the elevator apparatus, in synchronization with the operation of the second rotating body A synchronous rotating body that rotates is provided in the second rotating body, a rotation detection sensor that detects the rotation of the synchronous rotating body is provided, and a rotation state of the synchronous rotating body is monitored by the rotation detection sensor. To do.

According to the present invention, it is possible to detect that the second speed control mechanism is erroneously in the speed control state due to a failure of the one-way clutch during the elevator ascending operation. In addition, it is possible to provide an elevator apparatus that can detect that the second speed governing mechanism is not speed-regulating due to a failure of the one-way clutch or the like during the descent operation of the elevator.

It is front sectional drawing of the speed governor in the elevator apparatus of Example 1 of this invention. It is front sectional drawing of the speed governor in the elevator apparatus of Example 2 of this invention. It is a front view of the failure detection mechanism of the one-way clutch in the elevator apparatus of Example 2 of this invention. It is an upper surface sectional view of the failure detection mechanism of the one-way clutch in the elevator apparatus of Example 2 of the present invention. It is front sectional drawing of the speed governor in the elevator apparatus of Example 3 of this invention. It is front sectional drawing of the speed governor in the elevator apparatus of Example 4 of this invention. It is a front view of the failure detection mechanism of the one-way clutch in the elevator apparatus of Example 4 of this invention. It is a top sectional view of a failure detection mechanism for a one-way clutch in an elevator apparatus according to Embodiment 4 of the present invention. 1 is a side view showing a schematic configuration of an elevator apparatus according to an embodiment of the present invention.

Hereinafter, embodiments of an elevator apparatus according to the present invention will be described with reference to the drawings.

First, the schematic configuration of the elevator apparatus in the present embodiment will be described with reference to FIG. In general, an elevator apparatus 1000 suspends a car 300 that is a lifting body that moves up and down in a hoistway 200 provided in a building, and a counterweight 400 that is also a lifting body, while a passenger car 300 is suspended. On the other hand, a main rope 500 for suspending the counterweight 400, a traction sheave 600 provided in the machine room 100 around which the main rope 500 is wound, and a drive device (not shown) that drives the traction sheave 600 and includes a braking device. And a guide rail 700 that guides the raising and lowering of the car 300, and an emergency stop device 800 that is provided on the car 300 and grips the guide rail 700 with a wedge in an emergency.

The emergency stop device 800 is operated by pulling up the operation lever 900 pivotally supported on the car 300 side, and this operation lever 900 is connected to the governor rope 1. In the present embodiment, the governor rope 1 is wound around a sheave 4 provided on the governor at the upper side, and is wound around a tension pulley 10 that also serves to apply tension to the governor rope 1 at the lower side. Thus, by connecting the end portions of the ropes, the end portions are stretched over the entire lifting / lowering stroke of the car in the hoistway 200. Furthermore, in this embodiment, a speed governor rope operation monitoring sensor 9 for monitoring the operating state of the speed governor rope 1 is provided, and the speed governor rope 1 is monitored in which direction and at what speed. . In addition, the elevator apparatus of this invention is not limited only to the structure shown in FIG. For example, as described in Patent Document 1, a speed governor may be installed in the hoistway.

Next, the governor in the elevator apparatus of the present embodiment will be described. As shown in FIG. 1, a speed regulating rope 1 which is endless and arranged in a hoistway and connected to a lifting body and a speed regulating rope which is fixed to a horizontal shaft 3 which is a rotating shaft are wound around. The sheave 4 is connected to the first speed governor A that regulates the rotational speed of the sheave 4 and detects the overspeed, and the horizontal shaft 3 and the clutch 5, and when the elevator is lowered. The second governor B that regulates the rotational speed of the sheave 4 and detects the descending overspeed, the rotating body B1 that is fixed to the governor B, and the rotating body B1 are attached to the rotating body B1. And a rotation detecting sensor 62 that detects the rotation of the shaft 61.

The horizontal shaft 3 is supported by a frame 2 disposed in the machine room via a bearing, for example. The rotating body A1 of the first governor A is fixedly provided on one side of the horizontal shaft 3, and the rotating body B1 of the second governor B is attached to the other side of the horizontal shaft 3 via the clutch 5. It has been. As the clutch 5, a one-way clutch is used, an inner ring of the one-way clutch is fixed to the horizontal shaft 3, and an outer ring is fixed to the rotating body B1. The clutch 5 transmits the rotation of the sheave 4 to the rotating body B1 of the second governor during the descending operation of the elevator, and the sheave 4 to the second governor during the ascending operation of the elevator. Release the rotation. The shaft 61 is fixed to the rotating body B1 so as to be coaxial with the rotating shaft of the rotating body B1, and is separated from the rotation of the horizontal shaft 3.

1st speed governor A has the pendulum (illustration omitted) attached to this rotary body A1 and this rotary body A1, and displaced according to the rotational speed of rotary body A1. The second governor B has a rotating body B1 and a pendulum (not shown) that is attached to the rotating body B1 and is displaced according to the rotational speed of the rotating body B1. In the first speed governor A, when the rising speed of the car reaches 1.3 times the first rated speed, the car stop switch in the first speed governor A is turned on by the displacement of the pendulum. And configured to detect that 1.3 times the first rated speed of the car has been reached. In addition, when the second speed governor B reaches 1.3 times the second rated speed, which is slower than the first rated speed, the second speed governor B is also displaced by the pendulum displacement. The car stop switch at is configured to be turned on to detect that the car has reached 1.3 times the second rated speed of the car. As the first speed governor A and the second speed governor B, specifically, a flyweight speed control mechanism is used, but is not limited thereto.

The elevator apparatus 1000 according to the present embodiment reduces the rated speed in the descending direction from the rated speed in the ascending direction in order to reduce the feeling of closing the ears of the passenger due to a sudden change in atmospheric pressure caused by the lifting and lowering of the elevator car 300. Is set low. In response to this, when the first speed governor A for lifting detects that the lifting speed of the car has reached 1.3 times the rated speed in the rising direction, the hoisting machine that drives the car And the control device for controlling the hoisting machine are respectively cut off. On the other hand, when the second speed governor B for descent detects that the raising / lowering speed of the car has reached 1.3 times the rated speed in the descending direction, the power supply of the hoisting machine that drives the car and The power supply of the control device that controls the hoisting machine is shut off.

Further, the second speed governor B operates the emergency stop device 800 provided in the car when the descending speed of the car reaches 1.4 times the rated speed for some reason, thereby Emergency stop. That is, when the pendulum attached to the rotating body B1 is further displaced, the speed control rope 1 is sandwiched between the speed control rope 1 and the movement of the speed control rope 1 is stopped. At this time, referring to FIG. 9, the operating lever 900 connected to the speed-control rope 1 that has stopped moving is pulled up by further lowering of the car 300, and the emergency stop device 800 is pulled up by the pulled-up operating lever 900. Is operated, the guide rail 700 is gripped by a wedge (not shown), and the car 300 is mechanically emergency-stopped. Note that the second governor B stops the speed regulation by releasing the rotation of the sheave 4 by the clutch 5 during the ascending operation of the car 300.

Thus, in order to detect the predetermined overspeed in the upward direction and to detect the predetermined overspeed in the downward direction, the first speed governor A for increasing and the second speed governor B for decreasing The speed setting value is set to a different value.

Next, the failure detection mechanism in this embodiment will be described. As described above, the present embodiment includes the shaft 61 that is attached to the governor B and rotates in synchronization with the governor B, and the rotation detection sensor 62 that detects the rotation of the shaft 61. The rotation detection sensor 62 may be a sensor that generates a voltage by rotation, an encoder that outputs a pulse, or a sensor that can detect the presence or absence of rotation instead.

As described above, the elevator apparatus 1000 according to the present embodiment includes a car 300 on which passengers board, a speed control rope 1 connected to a lifting body that moves up and down in a hoistway including the car 300, and a speed control rope. 1 is used to detect the overspeed of the car 300 from the rotational speed of the sheave 4, the horizontal shaft 3 that is a rotating shaft fixed to the sheave 4, and the rotational speed of the sheave 4 that is fixed to the horizontal shaft 3. The first speed governor A including the first rotating body A1 that adjusts the speed of the car and the rotation of the sheave 4 are transmitted during the descending operation of the car 300, and the rotation of the sheave 4 is transmitted during the ascending operation of the lifting body. A clutch 5 that cancels transmission, and a second rotating body B1 that is fixed to the horizontal shaft 3 via the clutch 5 and detects the overspeed of the car 300 from the rotational speed of the sheave 4 to adjust the speed. 2 speed governor B, rotating in synchronization with the operation of the second rotating body B1 And a rotation detection sensor 62 that is a rotation detection sensor that detects the rotation of the shaft 61, and the rotation detection sensor 62 rotates the shaft 61. Is to monitor.

Therefore, when the car 300 is in a descending operation, the one-way clutch, the rotating body B1, or the rotating body is rotated when the rotating body B1 that should originally rotate according to the descending speed of the car 300 is not operating. An abnormality of the detection sensor 62 can be detected. In addition, when the car 300 is in the ascending operation, the rotation of the horizontal shaft 3 is originally released by the clutch 5 and the rotating body B1 that should not operate rotates according to the ascending speed of the car 300. If there is, the abnormality of the one-way clutch can be detected similarly. Since the shaft 61 rotates in synchronization with the governor B in this way, the rotation speed or rotation state of the shaft 62 can be detected by the rotation detection sensor 62, and normality / abnormality of the one-way clutch can be detected.

According to the present embodiment, the shaft 61 is attached to the center of the rotating body B1 by a disc-shaped mounting portion, and is coaxial with the rotation center axis of the rotating body B1, and rotates together with the disc-shaped mounting portion. The rotation detecting sensor 62 is connected to this shaft and detects the rotation of the shaft portion, so that the structure can be simplified and the labor involved in manufacturing can be simplified. Can be reduced.

Further, according to the present embodiment, the shaft 61 may be attached to the second rotating body B1 so as to be a rotating shaft coaxial with the rotating shaft of the second rotating body B1, so that the main part of the apparatus is compactly assembled. Since the rotation of the rotating body B1 is detected, the structure can be simplified, and the labor for manufacturing can be reduced.

In this embodiment, the governor rope motion monitoring sensor 9 for monitoring the operating state of the governor rope 1 is provided, and the detection result of the governor rope motion monitoring sensor 9 and the axis detected by the rotation detection sensor 62 are provided. The detection result of the rotation state of 61 is compared, and the presence or absence of abnormality in the operation state of the second rotating body B1 and the shaft 61 is determined. If the rotation of the rotating body B1 or the shaft 61 that should not be detected from the comparison result is detected, or if the rotation of the rotating body B1 or the shaft 61 that should be detected originally is detected, it is determined as abnormal. Thus, it is possible to take measures such as stopping the car 300 or reporting to an external monitoring center or the like.

In this embodiment, the governor rope operation monitoring sensor 9 is used to detect the actual operation state of the car 300. However, the present invention is not limited to this. For example, a drive device for driving the traction sheave 600 is used. It is also possible to provide a sensor for detecting rotation, detect how the car 300 is currently operated from the output of this sensor, and compare the detection result with the detection result of the rotation detection sensor 62. However, in a state where the car 300 is dropped due to cutting of the main rope 500 or the like, the configuration of the governor rope 1 may be determined to be abnormal on the rotating body B1 side with this configuration. This configuration is advantageous in that it includes a governor rope motion monitoring sensor 9 that monitors the state. As an example of the governor rope operation monitoring sensor 9, a governor rope operation monitoring sensor 9 for detecting the rotation of the horizontal shaft 3 fixed to the sheave 4 and rotating integrally is provided, and this governor rope operation monitoring is provided. It is also possible to detect how the car 300 is currently operated from the output of the sensor 9 and compare the detection result with the detection result of the rotation detection sensor 62. If it is such a structure, a detection apparatus system can be comprised in the periphery of the sheave 4, and apparatus arrangement | positioning can be simplified.

In addition to the speed governor rope motion monitoring sensor 9 for monitoring the operating state of the speed governor rope 1, a sensor for detecting the rotation of the drive device that drives the traction sheave 600 is provided, and the output results of these sensors are provided. If it is the structure to compare, it will be easy to specify what kind of abnormality has occurred, such as whether the clutch 5 or the rotating body B1 is abnormal, or whether the abnormality is related to the main rope 500 or not. Become.

Next, a second embodiment of the elevator apparatus according to the present invention will be described with reference to FIGS. In addition, the same code | symbol is attached | subjected to the thing equivalent to what is shown in Example 1. FIG. Further, the description of the same configuration as that of the first embodiment is omitted.

The elevator apparatus 1000 according to the present embodiment includes a detection mechanism different from the failure detection mechanism using the shaft 61 and the rotation detection sensor 62 in the first embodiment. As shown in FIGS. 3 and 4, the failure detection mechanism is attached to the speed governor B and uses a shielding plate 71 that rotates in synchronization with the speed governor B as a synchronous rotating body, and sandwiches the shielding plate 71. The rotation detection sensor 72 installed in the form is used.

If the rotation detection sensor 72 is a photoelectric type, it has a light projecting part and a light receiving part, and is switched on and off by blocking light between the light projecting and light receiving parts, and shielding between the light projecting and light receiving parts. Can detect the presence or absence of the body. If it is a displacement type or a proximity type, the displacement state or the proximity of the shielding plate can be sensed by the presence or absence of the shielding plate, and the rotation state can be confirmed.

In the case of the present embodiment, when the speed governor B is in the speed-controlling state, the shielding plate 71 rotates with the rotation of the rotating body B1, and the rotation state is confirmed by the sensor 72, whereby the one-way clutch 5 is normal.・ Abnormalities can be detected.

As described above, according to this embodiment, the shielding plate 71 that is a synchronous rotating body is formed of a rotating disk having a notch, and the rotation detection sensor 72 is shielded by detecting the passage of the shielding plate 71 through the notch. Since the rotation of the plate 71 is detected, variations of forms that the synchronous rotating body can take can be widened, and the degree of design freedom can be improved.

In addition, according to the present Example, since the shielding board 71 should just be attached to 2nd rotary body B1 so that it may become a rotating shaft coaxial with the rotating shaft of 2nd rotating body B1, the principal part of an apparatus is compact. Since the rotation of the rotating body B1 is detected, the structure can be simplified, and the labor for manufacturing can be reduced.

In the present embodiment, as in the first embodiment, the governor rope operation monitoring sensor 9 for monitoring the operation state of the governor rope 1 is provided, and the detection result of the governor rope operation monitoring sensor 9 and the rotation detection sensor 72 are provided. A configuration for determining whether or not there is an abnormality in the operating state of the second rotating body B1 and the shielding plate 71 by comparing the detection result of the rotational state of the shielding plate 71 detected by the driving device, and a drive device for driving the traction sheave 600 A sensor for detecting the rotation of the vehicle, detecting how the car 300 is currently operated from the output of the sensor, comparing the detection result with the detection result of the sensor 72, and a governor In addition to the governor rope motion monitoring sensor 9 for monitoring the operating state of the rope 1, a sensor for detecting the rotation of the driving device that drives the traction sheave 600 is provided. The output can be the structure for comparing, when taking such a configuration, it is possible to obtain the same effects as described in Example 1. Of course, as an example of the governor rope operation monitoring sensor 9, a governor rope operation monitoring sensor 9 for detecting the rotation of the horizontal shaft 3 fixed to the sheave 4 and rotating integrally is provided, and this governor rope operation monitoring is provided. It is also possible to detect how the car 300 is currently operated from the output of the sensor 9 and to compare the detection result with the detection result of the rotation detection sensor 62. The same effect as described in Example 1 can be obtained.

Further, in this embodiment, the disk is divided in half, and the disk and the cutouts are halved, so that the configuration and detection can be simplified. However, the variations of the disk and the notch can take various forms depending on the device configuration and the analysis method of the operation state of the sensor for detection. That is, although it is expressed as a disk, the synchronous rotating body may be constituted by a rod-like body equivalent to a disk made smaller.

Next, a third embodiment of the elevator apparatus according to the present invention will be described with reference to FIG. In addition, the same code | symbol is attached | subjected to the thing equivalent to what is shown in Example 1 and Example 2. FIG. Further, the description of the same configuration as in the first and second embodiments is omitted.

In this embodiment, as shown in FIG. 5, a rotating roller 81 provided coaxially with the governor B, a synchronous rotating roller 82 disposed so as to face the governor B, and the rotating roller 81 are synchronized with each other. A transmission system 83 including a belt wound around the rotating body roller 82 is provided, and the synchronous rotating body roller 82 rotates in synchronization with the governor B. Further, unlike the first embodiment, in this embodiment, a shaft 61 is attached so that the rotation is synchronized with the synchronous rotator roller 82, and a rotation detection sensor 62 for detecting the rotation of the shaft 61 is provided. Note that the transmission system 83 is not limited to a belt, but can be configured by a chain, a rope, a gear, or the like.

In the present embodiment, the rotation of the speed governor B is not directly detected as in the first embodiment, but the rotational speed of the shaft 61 that rotates together with the synchronous rotating roller 82 that rotates in synchronization with the speed governor B is detected. By detecting it with the sensor 62 and comparing it with the rotational speed of the horizontal shaft 3, it is possible to sense the rotational state of the governor B and detect normality / abnormality of the one-way clutch.

In this embodiment, since the rotation of the governor B is transmitted from the rotating body roller 81 to the synchronous rotating body roller 82 by the transmission system 83, the rotation can be transmitted to the synchronous rotating body roller 82 due to damage or the like. The lost state can also be detected.

Thus, the rotating body roller 81 that rotates together with the second rotating body B1, the synchronous rotating body roller 82 that rotates together with the shaft 61 that is the synchronous rotating body, and the rotating body roller 81 and the synchronous rotating body roller 82 are wound around. Since the transmission system 83 is a rotation transmission member, and the shaft 61 which is a synchronous rotation body is provided on the second rotation body B1 via the rotation body roller 81, the synchronization rotation body roller 82, and the transmission system 83. Even if the rotation detection sensor 62 and the shaft 61 that is a synchronous rotating body cannot be provided in the vicinity of the second rotating body B1 due to a problem in the apparatus configuration or a problem in the installation environment, a configuration that can be widely used It can be. Furthermore, basically, the configuration applicable to the first embodiment can be applied to the form of the present embodiment, and the same effect as described in the first embodiment can be obtained.

Next, a fourth embodiment of the elevator apparatus according to the present invention will be described with reference to FIGS. In addition, the same code | symbol is attached | subjected to the thing equivalent to what is shown in Example 1, Example 2, and Example 3. FIG. Also, the description of the same configurations as those of the first embodiment, the second embodiment, and the third embodiment is omitted.

In the present embodiment, as in the third embodiment, as shown in FIG. 6, a rotating body roller 81 provided coaxially with the speed governor B, a synchronous rotating body roller 82 disposed so as to face the speed governor B, and these rotations A belt serving as a transmission system 83 wound around the body roller 81 and the synchronous rotating body roller 82 is provided. Note that the transmission system 83 is not limited to a belt, but can be configured by a chain, a rope, a gear, or the like. Further, as shown in FIG. 7 and FIG. 8, it comprises a shielding plate 71 which is attached to the synchronous rotating body roller 82 and rotates in synchronization with the synchronous rotating body roller 82, and a rotation detection sensor 72 installed so as to sandwich the shielding plate. .

In the present embodiment, as in the second embodiment, the output state of the rotation detection sensor is confirmed by the rotation of the shielding plate 71 that rotates with the synchronous rotating body roller 82 that rotates in synchronization with the rotation of the governor B. Thus, normality / abnormality of the one-way clutch can be detected.

Also in this embodiment, since the rotation of the governor B is transmitted from the roller 81 to the roller 82 by the transmission system 83 as in the third embodiment, the transmission system 83 cannot transmit the rotation to the roller 82 due to breakage or the like. The state can also be detected. Furthermore, basically, the configuration applicable to the second embodiment can also be applied to the form of the present embodiment, and the same effect as described in the second embodiment can be obtained.

In the first to fourth embodiments, the example in which the governor rope 1 is connected to the car 300 has been described. However, even in the configuration in which the governor rope 1 is connected to the counterweight 400 that is a lifting body as in the case of the car 300, It is possible to achieve the same effect as described in the embodiment. In this case, it is necessary to detect the descending speed of the counterweight 400 when detecting the rising speed of the car 300 and detecting the ascent speed of the counterweight 400 when detecting the descending speed of the car 300. .

Further, the elevator apparatus 1000 described in the first to fourth embodiments can be variously modified and applied in a state where the technical idea of the present invention is applied.

1 governor rope 2 frame 3 horizontal axis (rotary axis)
4 sheaves 5 clutch 9 governor rope motion monitoring sensor 10 tension pulley 61 shaft 62 rotation detection sensor 71 shielding plate 72 rotation detection sensor 81 rotating body roller 82 synchronous rotating body roller 83 transmission system (rotation transmitting member)
100 Machine room 200 Hoistway 300 Ride car (elevating body)
400 counterweight (elevating body)
500 main rope 600 traction sheave 700 guide rail 800 emergency stop device 900 operating lever 1000 elevator device A first governor A1 rotating body B second governor B1 rotating body

Claims

Fixed to the sheave, the sheave on which the passenger rides, the speed control rope connected to the lifting body that moves up and down the hoistway including the car, the sheave around which the speed control rope is wound, and the sheave A first speed governor comprising: a rotating shaft that is fixed to the rotating shaft; and a first rotating body that adjusts the speed by detecting an overspeed of the car from the rotational speed of the sheave, A clutch that transmits rotation of the sheave when the car is lowered, and a clutch that releases transmission of rotation of the sheave when the car is raised, and is fixed to the rotating shaft via the clutch and In an elevator apparatus comprising a second speed governor including a second rotating body that detects a descending overspeed of the car from a rotational speed and adjusts the speed,
A synchronous rotating body that rotates in synchronization with the operation of the second rotating body is provided in the second rotating body, and a rotation detection sensor that detects the rotation of the synchronous rotating body is provided, and the synchronization is detected by the rotation detecting sensor. An elevator apparatus characterized by monitoring a rotating state of a rotating body.
2. The elevator apparatus according to claim 1, wherein the rotation detection sensor is connected to an axis that is coaxial with a rotation center axis of the synchronous rotator and rotates together with the synchronous rotator, and detects rotation of the axis. Elevator device characterized.
The elevator apparatus according to claim 1, wherein the synchronous rotating body includes a rotating disk having a notch, and the sensor detects rotation of the motivating rotating body by detecting passage of the rotating disk and the notch. An elevator apparatus characterized by that.
4. The elevator apparatus according to claim 2, wherein the synchronous rotating body is a rotating shaft coaxial with the rotating shaft of the second rotating body. The elevator apparatus characterized by attaching.
4. The elevator apparatus according to claim 2, wherein the rotating body roller rotates together with the second rotating body, the synchronous rotating body roller rotates together with the synchronous rotating body, the rotating body roller, and the synchronous rotation. A rotation transmission member member wound around a body roller is provided, and the synchronous rotation body is provided on the second rotation body via the rotation body roller, the synchronous rotation body roller, and the rotation transmission member member. Elevator equipment.
The elevator apparatus according to any one of claims 1 to 5, further comprising a governor rope operation monitoring sensor that monitors an operation state of the governor rope, the detection result of the governor rope operation monitoring sensor and the rotation An elevator apparatus characterized by comparing the detection result of the rotation state of the synchronous rotating body detected by a detection sensor to determine whether or not there is an abnormality in the operation state of the second rotating body and the synchronous rotating body.