WO2005105648A1

WO2005105648A1 - Elevator apparatus

Info

Publication number: WO2005105648A1
Application number: PCT/JP2004/006335
Authority: WO
Inventors: Daiki Fukui; Takashi Yumura; Kazumasa Ito
Original assignee: Mitsubishi Denki Kabushiki Kaisha
Priority date: 2004-04-30
Filing date: 2004-04-30
Publication date: 2005-11-10
Also published as: CN1780780A; DE602004031265D1; EP1741657A1; JP4292204B2; CN1780780B; EP1741657B1; JPWO2005105648A1; EP1741657A4

Abstract

An elevator apparatus, wherein a car and a balance weight are suspended, by a 2:1 roping system, from main ropes in a hoistway. The main ropes comprise car side end parts and balance weight side end parts connected to the upper part of the hoistway. A car vibration detector for detecting the vibration of the car side end parts are installed at the upper part of the hoistway. A mischief detection part detects the swing of the car caused by a mischief by signals from the car vibration detector.

Description

Description Elevator equipment Technical field

The present invention relates to an elevator apparatus capable of detecting a car shake caused by mischief and preventing an erroneous overspeed. Background art

For example, in a conventional elevator apparatus disclosed in Japanese Patent Application Laid-Open No. 9-220560, a swing detecting body for detecting a swing above a set value is provided on a car. For example, when a sway occurs in the car due to mischief, the sway is detected by the sway detector and an alarm is issued by an alarm device. As a result, it is possible to prevent the swaying of the cage due to mischief from being propagated to the governor and causing the governor to malfunction.

However, the level of the car sway that affects the governor via the governor rope is different from the level of the car sway directly detected by the displacement detector, so that the level at which the governor malfunctions It was more likely that a warning of a car swinging at a much lower level than that would be issued.

In addition, since it is unclear how much the swing of the governor malfunctions, it is necessary to set the mischief detection level low, and there is a risk that alarms will be issued frequently due to misdetection. . Disclosure of the invention

SUMMARY OF THE INVENTION The present invention has been made to solve the above problems, and can more reliably prevent an overspeed from being erroneously detected due to a car shake caused by a human being. It is an object of the present invention to obtain an elevator device capable of preventing the occurrence of an elevator.

An elevator apparatus according to the present invention is provided with a car hanging car, a car that is lifted and lowered in a hoistway, a fishing weight mounted with a counterweight hanging car, and a fishing lift that is raised and lowered in a hoistway. A driving device having a counterweight, a driving sheave, and a car and a counterweight, for raising and lowering a car and a counterweight; a car side end and a counterweight side end connected to an upper part of a hoistway; a car suspension wheel; a counterweight; The main rope wound around the suspension sheave and the drive sheave, and a governor sheave that rotates at a speed corresponding to the traveling speed of the car, and a governor and a governor provided at the upper part of the hoistway An elevator control unit that detects the running speed of the car from the rotation of the governor rope and the governor sheave that is wound around the sheave and that is connected to the car, and controls the operation of the car according to the detection result. A car vibration detector for detecting vibration of the car side end, and a mischief detection unit for detecting car shaking due to mischief based on a signal from the car vibration detector, provided above the hoistway. I have.

Further, an elevator apparatus according to the present invention provides a drive device having a drive sheep, a main rope wound around the drive sheave, a car suspended by a drive device in a hoistway and raised and lowered by the drive device. A governor having a governor sheep that rotates at a speed corresponding to the traveling speed, an elevator control unit that detects the traveling speed of the car from the rotation of the governor sheep, and controls the operation of the car according to the detection result; Governor vibration detector to detect governor vibration,

It is provided with a car vibration detector for detecting car vibration, and a mischief detection unit for detecting car shake caused by mischief based on signals from the governor vibration detector and the car vibration detector. Brief Description of Drawings

FIG. 1 is a configuration diagram schematically showing an elevator apparatus according to Embodiment 1 of the present invention, FIG. 2 is a front view showing an emergency stop device of FIG. 1,

FIG. 3 is a front view showing a state when the safety gear of FIG. 2 is operated.

FIG. 4 is a configuration diagram schematically showing an elevator device according to Embodiment 2 of the present invention, FIG. 5 is a front view showing the safety device of FIG. 4,

FIG. 6 is a front view showing the safety device during operation of FIG. 5,

FIG. 7 is a front view showing the driving unit of FIG. 6,

FIG. 8 is a configuration diagram schematically illustrating an elevator device according to Embodiment 3 of the present invention, FIG. 9 is a configuration diagram schematically illustrating an elevator device according to Embodiment 4 of the present invention, FIG. 10 is a configuration diagram schematically showing an elevator device according to Embodiment 5 of the present invention, FIG. 11 is a configuration diagram schematically showing an elevator device according to Embodiment 6 of the present invention, and FIG. Configuration diagram showing another example of 1 elevator device,

FIG. 13 is a configuration diagram schematically illustrating an elevator apparatus according to Embodiment 7 of the present invention, FIG. 14 is a configuration diagram schematically illustrating an elevator apparatus according to Embodiment 8 of the present invention, and FIG. Front view showing another example of the driving unit of

FIG. 16 is a plan sectional view showing an emergency stop device according to Embodiment 9 of the present invention, FIG. 17 is a partially cutaway side view showing an emergency stop device according to Embodiment 10 of the present invention, and FIG. Configuration diagram schematically showing an elevator apparatus according to Embodiment 11 of the invention,

FIG. 19 is a graph showing the car speed abnormality judgment criteria stored in the storage unit of FIG. 18; FIG. 20 'is a graph showing the car acceleration abnormality judgment criteria stored in the storage unit of FIG. 18; FIG. 1 is a configuration diagram schematically showing an elevator apparatus according to Embodiment 12 of the present invention,

FIG. 22 is a configuration diagram schematically showing an elevator apparatus according to Embodiment 13 of the present invention,

Figure 23 is a block diagram showing the cleat device and each rope sensor in Figure 2.2.

FIG. 24 is a configuration diagram showing a state in which one main rope of FIG. 23 is broken,

FIG. 25 is a configuration diagram schematically showing an elevator apparatus according to Embodiment 14 of the present invention,

FIG. 26 is a configuration diagram schematically showing an elevator apparatus according to Embodiment 15 of the present invention.

FIG. 27 is a perspective view showing the car and door sensor of FIG. 26,

FIG. 28 is a perspective view showing a state where the car doorway of FIG. 27 is open,

FIG. 29 is a configuration diagram schematically showing an elevator apparatus according to Embodiment 16 of the present invention.

FIG. 30 is a block diagram showing the upper part of the hoistway of FIG. 29,

FIG. 31 is a configuration diagram showing an elevator apparatus according to Embodiment 17 of the present invention, FIG. 32 is an enlarged front view showing the vicinity of the vibration detector of FIG. 31, FIG. 33 is a side view showing the vicinity of the vibration detector of FIG. 32,

FIG. 34 is a front view showing an essential part of an elevator apparatus according to Embodiment 18 of the present invention. FIG. 35 is a configuration diagram showing an elevator apparatus according to Embodiment 19 of the present invention. FIG. FIG. 37 is a configuration diagram illustrating an elevator apparatus according to Embodiment 20 of the present invention. FIG. 37 is a configuration diagram illustrating an elevator apparatus according to Embodiment 21 of the present invention. FIG. 38 is a flowchart illustrating the operation of the tampering detection unit of FIG. ,.

FIG. 39 is a configuration diagram illustrating an elevator apparatus according to Embodiment 22 of the present invention. FIG. 40 is a side view illustrating the vibration damping apparatus of FIG.

FIG. 41 is an explanatory diagram showing signal correction by the filter of FIG. 39,

FIG. 42 is an explanatory diagram showing an example in which two types of correction are applied to a detection signal from one vibration detector. BEST MODE FOR CARRYING OUT THE INVENTION

Hereinafter, preferred embodiments of the present invention will be described with reference to the drawings.

Embodiment 1

FIG. 1 is a configuration diagram schematically showing an elevator apparatus according to Embodiment 1 of the present invention. In the figure, a pair of car guide rails 2 are installed in a hoistway 1. The car 3 is guided up and down the hoistway 1 by the car guide rails 2. At the upper end of the hoistway 1, a hoist (not shown) for raising and lowering the car 3 and the counterweight (not shown) is arranged. The main rope 4 is wound around the drive sheave of the hoisting machine. The car 3 and the counterweight are suspended in the hoistway 1 by the main rope 4. On the car 3, a pair of safety devices 5, which are braking means, are mounted so as to face each car guide rail 2. Each safety device 5 is arranged at the lower part of the car 3. The car 3 is braked by the operation of each safety device 5.

At the upper end of the hoistway 1, a speed governor 6 serving as a car speed detecting means for detecting the hoisting speed of the car 3 is arranged. The governor 6 has a governor body 7 and a governor sheep 8 rotatable with respect to the governor body 7. At the lower end of the hoistway 1, a rotatable pulley 9 is arranged. A governor rope 10 connected to the car 3 is wound between the governor sheave 8 and the tensioner 9. Governor rope 10 The connection part with the car 3 is reciprocated with the car 3 in the vertical direction. As a result, the governor sheave 8 and the stretcher 9 are rotated at a speed corresponding to the elevator speed of the car 3. The governor 6 operates the brake device of the hoist when the elevator speed of the car 3 reaches a preset first overspeed. Also, the governor 6 has an output unit that outputs an operation signal to the safety gear 5 when the descending speed of the car 3 becomes a second overspeed (set overspeed) higher than the first overspeed. There is a switch 1.1. The switch part 11 has a contact part 16 that is mechanically opened and closed by an overspeed lever that is displaced according to the centrifugal force of the rotating governor sheep 8. The contact section 16 is electrically connected to the battery 12 as an uninterruptible power supply that can supply power even during a power failure, and to the control panel 13 that controls the operation of the elevator via a power cable 14 and a connection cable 15, respectively. Have been.

A control cable (moving cable) is connected between the car 3 and the control panel 13. The control cable includes an emergency stop wiring 17 electrically connected between the control panel 13 and each emergency stop device 5 together with a plurality of power lines and signal lines. The power from the battery 12 is passed through the power cable 14, the switch 11, the connection cable 15, the power supply circuit in the control panel 13, and the emergency stop wiring 17 by closing the contacts 16. Supplied to each safety gear 5. The transmission means has a connection cable 15, a power supply circuit in the control panel 13, and an emergency stop wiring 17.

FIG. 2 is a front view showing the emergency stop device 5 of FIG. 1, and FIG. 3 is a front view showing the emergency stop device 5 at the time of operation of FIG. In the figure, a support member 18 is fixed to the lower part of the car 3. The emergency stop device 5 is supported by a support member 18. Further, each safety device 5 has a pair of braking members wedges 19 which can be brought into contact with and separated from the car guide rail 2, and a pair of wedges 19 connected to the wedges 19 to displace the wedges 19 with respect to the car 3. And a pair of guide portions 21 fixed to the support member 18 and guiding the wedge 19 displaced by the actuator portion 20 in a direction in contact with the car guide rail 2. . The pair of wedges 19, the pair of actuator sections 20 and the pair of guide sections 21 are respectively symmetrically arranged on both sides of the car guide rail 2.

The guide portion 21 has an inclined surface 22 that is inclined with respect to the car guide rail 2 so that the distance from the car guide rail 2 decreases upward. Wedge 1 9 is slope 2 Displaced along 2 The actuator section 20 is provided with a spring 23, which is an urging section for urging the wedge 19 to the upper guide section 21 side, and a guide section 21 against the urging of the spring 23 by an electromagnetic force generated by energization. And an electromagnetic magnet 24 for displacing the wedge 19 downward so as to separate.

The spring 23 is connected between the support member 18 and the wedge 19. The electromagnetic magnet 24 is fixed to the support member 18. The emergency stop wiring 17 is connected to the electromagnetic magnet 24. A permanent magnet 25 facing the electromagnetic magnet 24 is fixed to the wedge 19. Electromagnet 24 is energized by battery 12 (see Fig. 1) by closing contact point 16 (see Fig. 1). The emergency stop device 5 is actuated by shutting off the power to the electromagnetic magnet 24 by opening the contact portion 16 (see Fig. 1). That is, the pair of wedges 19 is displaced upward with respect to the car 3 · by the elastic restoring force of the spring 23 and pressed against the car guide rail 2.

Next, the operation will be described. During normal operation, the contact 16 is closed. As a result, power is supplied to the electromagnetic magnet 24 from the battery 12. The wedge 19 is attracted to and held by the electromagnetic magnet 24 by the electromagnetic force generated by energization, and is separated from the car guide rail 2 (FIG. 2).

For example, when the speed of the car 3 is increased to the first overspeed due to the cutting of the main rope 4 or the like, the brake device of the hoist operates. When the speed of the car 3 further increases and reaches the second overspeed even after the operation of the brake device of the hoisting machine, the contact portion 16 is opened. As a result, the power supply to the electromagnetic magnet 24 of each safety device 5 is cut off, and the wedge 19 is displaced upward with respect to the car 3 by the bias of the spring 23. At this time, the wedge 19 is displaced along the inclined surface 22 while contacting the inclined surface 22 of the plan interior 21. Due to this displacement, the wedge 1.9 comes into contact with the car guide rail 2 and is pressed. The wedge 19 is further displaced upward by the contact with the power guide rail 2 and is inserted between the car guide rail 2 and the guide portion 21. As a result, a large frictional force is generated between the car guide rail 2 and the wedge 19, and the car 3 is braked (FIG. 3).

When releasing the braking of car 3, the electromagnetic magnet 2

Raise car 3 while power is applied to 4. As a result, the wedge 19 is displaced downward and is separated from the car guide rail 2. In such an elevator system, since the switch section 11 connected to the battery 12 and each safety device 5 are electrically connected, the speed abnormality of the car 3 detected by the governor 6 is checked. An electric operation signal can be transmitted from the switch section 11 to each safety device 5, and the car 3 can be braked in a short time after the abnormal speed of the car 3 is detected. As a result, the braking distance of the car 3 can be reduced. In addition, the safety devices 5 can be easily operated synchronously, and the car 3 can be stopped stably. Further, since the emergency stop device 5 is operated by an electric operation signal, it is possible to prevent a malfunction due to a swing of the car 3 or the like. In addition, the safety device 5 includes an actuator portion 20 for displacing the wedges 19 to the upper guide portion 21 side and an inclination for guiding the wedges 19 to be displaced upward in a direction in contact with the car guide rail 2. Since the guide portion 21 including the surface 22 is provided, the pressing force of the wedge 19 against the car guide rail 2 can be reliably increased when the car 3 is descending.

Also, the actuator section 20 has a spring 23 for urging the wedge 19 upward and an electromagnetic magnet 24 for displacing the wedge 19 downward against the urging of the spring 23. However, the wedge 19 can be displaced with a simple configuration. Embodiment 2

FIG. 4 is a configuration diagram schematically showing an elevator apparatus according to Embodiment 2 of the present invention. In the figure, the car 3 has a car main body 27 provided with a car doorway 26 and a car door 28 for opening and closing the car doorway 26. The hoistway 1 is provided with a car speed sensor 31 which is a car speed detecting means for detecting the speed of the car 3. An output unit 32 electrically connected to the car speed sensor 31 is mounted in the control panel 13. A battery 12 is connected to the output section 32 via a power cable 14. From the output unit 32, electric power for detecting the speed of the car 3 is supplied to the car speed sensor 31. The output unit 32 receives the speed detection signal from the car speed sensor 31.

At the lower part of the car 3, a pair of emergency stop devices 33 serving as braking means for braking the car 3 is mounted. The output section 3 2 and each safety gear 3 3 are connected to the wiring for safety gear 1 7 Are electrically connected to each other. The output unit 32 outputs an operation signal, which is electric power for operation, to the safety gear 33 when the speed of the car 3 is the second overspeed. The emergency stop device 33 is activated by input of an activation signal.

5 is a front view showing the emergency stop device 33 of FIG. 4, and FIG. 6 is a front view showing the emergency stop device 33 at the time of operation of FIG. In the figure, the emergency stop device 33 includes a wedge 34 serving as a braking member that can be brought into contact with and separated from the car guide rail 2, an actuator portion 35 connected to a lower portion of the wedge 34, and an upper portion of the wedge 34. And a guide part 36 fixed to the car 3. The wedge 34 and the actuator section 35 are provided so as to be able to move up and down with respect to the guide section 36. The wedge 34 is displaced upward with respect to the guide portion 36, that is, is displaced toward the guide portion 36, and is guided by the guide portion 36 in the direction in which it contacts the car guide rail 2.

The actuator section 35 includes a cylindrical contact section 37 that can be moved toward and away from the car guide rail 2, an operation mechanism 38 that displaces the contact section 37 in a direction that is moved toward and away from the car guide rail 2, And a support portion 39 for supporting the contact portion 37 and the operating mechanism 38. The contact portion 37 is lighter than the wedge 34 so that it can be easily displaced by the actuation mechanism 3.8. The operating mechanism 38 is movable so that it can reciprocate between a contact position where the contact portion 37 is in contact with the car guide rail 2 and an open position where the contact portion 37 is separated from the car guide rail 2. It has a unit 40 and a drive unit 41 for displacing the movable unit 40.

The support portion 39 and the movable portion 40 are provided with a support guide hole 42 and a movable guide hole 43, respectively. The inclination angles of the support guide hole 42 and the movable guide hole 43 with respect to the car guide rail 2 are different from each other. The contact portion 37 is slidably mounted in the support guide hole 42 and the movable guide hole 43. The contact portion 37 slides in the movable guide hole 43 with the reciprocal displacement of the movable portion 40, and is displaced along the longitudinal direction of the support guide hole 42. As a result, the contact portion 37 is moved toward and away from the car guide rail 2 at an appropriate angle. When the contact portion 37 comes into contact with the car guide rail 2 when the car 3 descends, the wedge 34 and the actuator portion 35 are braked and displaced toward the guide portion 36.

A horizontal guide hole 47 extending in the horizontal direction is provided at an upper portion of the support portion 39. The wedge 34 is slidably mounted in the horizontal guide hole 47. That is, the wedges 3 4 Reciprocating displacement is possible in the horizontal direction with respect to the part 39.

The guide portion 36 has an inclined surface 44 and a contact surface 45 arranged so as to sandwich the car guide drain 2. The inclined surface 44 is inclined with respect to the car guide rail 2 so that the distance from the car guide rail 2 becomes smaller upward. The contact surface 45 can be moved toward and away from the car guide rail 2. Wedge 34 and actuator

The wedge 34 is displaced along the inclined surface 44 with the upward displacement of the guide 35 relative to the guide portion 36. As a result, the wedge 34 and the contact surface 45 are displaced so as to approach each other, and the car guide rail 2 is sandwiched between the wedge 34 and the contact surface 45.

FIG. 7 is a front view showing the driving section 41 of FIG. In the figure, the driving section 41 has a disc spring 46 as an urging section attached to the movable section 40, and an electromagnetic magnet 48 for displacing the movable section 40 by an electromagnetic force caused by energization. ing.

The movable portion 40 is fixed to a central portion of the disc spring 46. The disc spring 46 is deformed by the reciprocating displacement of the movable part 40. The biasing direction of the disc spring 46 is reversed between the contact position (solid line) and the separation position (two-dot broken line) of the movable part 40 due to the deformation caused by the displacement of the movable part 40. ing. The movable portion 40 is held at the contact position and the separation position by the bias of the disc spring 46. That is, the contact state and the separated state of the contact portion 37 with the car guide rail 2 are held by the urging of the disc spring 46. The electromagnetic magnet 48 has a first electromagnetic unit 49 fixed to the movable unit 40, and a second electromagnetic unit 50 arranged to face the first electromagnetic unit 49. The movable section 40 is displaceable with respect to the second electromagnetic section 50. The emergency stop wiring 17 is connected to the electromagnetic magnet 48. The first electromagnetic unit 49 and the second electromagnetic unit 50 generate an electromagnetic force by the input of the operation signal to the electromagnetic magnet 48, and are repelled by each other. The first electromagnetic unit 49 is moved by the input of an operation signal to the electromagnetic magnet 48.

With 40, it is displaced away from the second electromagnetic unit 50.

The output unit 32 outputs a return signal for return after the operation of the emergency stop mechanism 5 at the time of return. The first electromagnetic unit 49 and the second electromagnetic unit 50 are attracted to each other by the input of the return signal to the electromagnetic magnet 48. Other configurations are the same as in Embodiment 1.

Next, the operation will be described. During normal operation, the movable part 40 is in the open position The contact portion 37 is separated from the car guide rail 2 by the urging of the disc spring 46. In a state in which the contact portion 37 is separated from the car guide rail 2, the wedge 34 is separated from the car guide rail 2 by keeping a distance from the guide portion 36. When the speed detected by the car speed sensor 31 becomes the first overspeed, the brake device of the hoist operates. Thereafter, when the speed of the car 3 increases and the speed detected by the car speed sensor 31 becomes the second overspeed, an operation signal is output from the output section 32 to each of the emergency stop devices 33. Due to the input of the operation signal to the electromagnetic magnet 48, the first electromagnetic unit 49 and the second electromagnetic unit 50 repel each other. The movable portion 40 is displaced to the contact position by the electromagnetic repulsion. Along with this, the contact portion 37 is displaced in a direction in which it comes into contact with the car guide rail 2. By the time the movable portion 40 reaches the contact position, the biasing direction of the disc spring 46 reverses to the direction in which the movable portion 40 is held at the contact position. As a result, the contact portion 37 comes into contact with and is pressed against the car guide rail 2, and the wedge 34 and the actuator portion 35 are braked.

Since the car 3 and the guide portion 36 descend without being braked, the guide portion 36 is displaced to the lower side of the wedge 34 and the actuator portion 35. Due to this displacement, the wedge 34 is guided along the inclined surface 44, and the car guide rail 2 is sandwiched between the wedge 34 and the contact surface 45. The wedges 34 are displaced further upward by the contact with the car guide rails 2 and are inserted between the car guide rails 2 and the inclined surfaces 44. As a result, a large frictional force is generated between the car guide drain 2 and the wedge 34 and between the car guide rail 2 and the contact surface 45, and the car 3 is braked.

Upon return, a return signal is transmitted from the output unit 32 to the electromagnetic magnet 48. Thereby, the first electromagnetic unit 49 and the second electromagnetic unit 50 are attracted to each other, and the movable unit 40 is displaced to the separated position. Accordingly, the contact portion 37 is displaced in a direction in which the contact portion 37 is separated from the car guide rail 2. By the time the movable portion 40 reaches the separation position, the biasing direction of the disc spring 46 is reversed, and the movable portion 40 is held at the separation position. In this state, the car 3 is raised, and the pressing of the wedges 3 4 and the contact surface 45 against the car guide rail 2 is released.

In such an elevator apparatus, the same effect as that of the first embodiment is obtained, and a car speed sensor 31 is provided in the hoistway 1 to detect the speed of the car 3. Therefore, there is no need to use a governor and a governor rope, and the installation space of the entire elevator apparatus can be reduced.

Further, the actuator section 35 has a contact section 37 that can be brought into contact with and separated from the car guide rail 2 and an operating mechanism 38 that displaces the contact section 37 in a direction that comes into contact with and separates from the car guide rail 2. Therefore, by making the weight of the contact portion 37 lighter than that of the wedge 34, the driving force of the operating mechanism 38 on the contact portion 37 can be reduced, and the operating mechanism 38 can be downsized. it can. Furthermore, the weight of the contact portion 37 can be reduced, the displacement speed of the contact portion 37 can be increased, and the time required for generation of the braking force can be reduced.

In addition, since the drive unit 41 has a disc spring 46 that holds the movable unit 40 at the contact position and the separation position, and an electromagnetic magnet 48 that displaces the movable unit 40 when energized, The energization of the electromagnetic magnet 48 only when the movable part 40 is displaced allows the movable part 40 to be reliably held at the contact position or the separation position. Embodiment 3.

FIG. 8 is a configuration diagram schematically showing an elevator apparatus according to Embodiment 3 of the present invention. In the figure, a car doorway 26 is provided with a door opening / closing sensor 58 which is a door opening / closing detecting means for detecting the opening / closing state of the car door 28. An output unit 59 mounted on the control panel 13 is connected to the door open / close sensor 58 via a control cable. Further, a car speed sensor 31 is electrically connected to the output section 59. The speed detection signal from the car speed sensor 31 and the open / close detection signal from the door open / close sensor 58 are input to the output unit 59. In the output unit 59, the speed of the car 3 and the open / closed state of the car entrance 26 are grasped by the input of the speed detection signal and the opening / closing detection signal. The output section 59 is connected to an emergency stop device 33 via an emergency stop wiring 17. The output unit 59 outputs an operation signal when the car 3 moves up and down with the car entrance 26 open with the speed detection signal from the car speed sensor 31 and the open / close detection signal from the door opening / closing sensor 58. Output. The operation signal is transmitted to the safety device 33 through the safety wire 17. Other configurations are the same as those of the second embodiment. In such an elevator device, a car speed sensor 31 for detecting the speed of the car 3 and a door open / close sensor 58 for detecting the open / closed state of the car door 28 are electrically connected to the output unit 59, The operation signal is output from the output unit 59 to the safety device 33 when the car 3 descends with the car entrance 26 open, so that the car entrance 26 is open. Of the car 3 can be prevented from lowering.

The emergency stop device 33 may be mounted upside down on the car 3. In this way, it is possible to prevent the car 3 from rising when the car entrance 26 is open. Embodiment 4.

FIG. 9 is a configuration diagram schematically showing an elevator apparatus according to Embodiment 4 of the present invention. In the figure, the main rope 4 has a cutting detection lead 61 inserted therein, which is a rope break detecting means for detecting a break in the main rope 4. A weak current is flowing through the disconnection detection conductor 61. Whether or not the main rope 4 has been cut is detected by whether or not a weak current is applied. The output section 62 mounted on the control panel 13 is electrically connected to the disconnection detection lead 61. When the disconnection detection conductor 61 is disconnected, a rope disconnection signal, which is a disconnection signal for energizing the disconnection detection conductor 61, is input to the output unit 62. The car speed sensor 31 is electrically connected to the output unit 62.

The output unit 62 is connected to an emergency stop device 33 via an emergency stop wiring 17. The output section 62 outputs an operation signal when the main rope 4 is cut, based on a speed detection signal from the car speed sensor 31 and a rope cutting signal from the cutting detection lead 61. The operation signal is transmitted to the safety device 33 through the safety wire 17. Other configurations are the same as those of the second embodiment.

In such an elevator apparatus, a car speed sensor 31 for detecting the speed of the car 3 and a disconnection detection conductor 61 for detecting the disconnection of the main rope 4 are electrically connected to the output section 62, and the main rope Since the operation signal is output from the output unit 6 2 to the safety gear 3 3 when the machine 4 is disconnected, the car descends at an abnormal speed by detecting the speed of the car 3 and detecting the main rope 4 being cut. The car 3 can be more reliably braked. In the above example, as the means for detecting rope breakage, the cut through the main rope 4 Although a method of detecting the presence or absence of energization of the disconnection detection lead wire 61 is used, for example, a method of measuring a change in the tension of the main rope 4 may be used. In this case, a tension measuring device will be installed at the main rope 4 rope stop. Embodiment 5

FIG. 10 is a configuration diagram schematically showing an elevator apparatus according to Embodiment 5 of the present invention. In the figure, a car position sensor 65 which is a car position detecting means for detecting the position of the car 3 is provided in the hoistway 1. The car position sensor 65 and the car speed sensor 31 are electrically connected to an output unit 66 mounted on the control panel 13. The output unit 66 has a memory unit 67 storing a control pattern including information such as the position, speed, acceleration / deceleration, and stop floor of the car 3 during normal operation. The output unit 66 receives the speed detection signal from the car sensor 31 and the car position signal from the car position sensor 65.

The output unit 66 is connected to an emergency stop device 33 via an emergency stop wiring 17. In the output unit 66, the speed and position (measured value) of the car 3 based on the speed detection signal and the car position signal, and the speed and position (set value) of the car 3 based on the control pattern stored in the memory unit 67 Are to be compared. The output unit 66 outputs an operation signal to the safety gear 33 when the deviation between the measured value and the set value exceeds a predetermined threshold. Here, the predetermined threshold value is a deviation between a minimum actually measured value and a set value for the car 3 to stop without colliding with the end of the hoistway 1 by normal braking. Other configurations are the same as those of the second embodiment.

In such an elevator apparatus, the output unit 66 outputs an operation signal when the deviation between the measured value from the car speed sensor 31 and the car position sensor 65 and the set value of the control pattern exceeds a predetermined threshold. Therefore, collision of the car 3 with the end of the hoistway 1 can be prevented. Embodiment 6

FIG. 11 is a configuration diagram schematically showing an elevator apparatus according to Embodiment 6 of the present invention. In the figure, the first car, the upper car 7 1, and the upper car A lower car 72, which is a second car located below 71, is arranged. The upper car 7 1 and the lower car 7 2 are guided by the car guide rails 2 and moved up and down in the hoistway 1. At the upper end of the hoistway 1, a first hoist (not shown) for raising and lowering the upper car 71 and the counterweight for the upper car (not shown), and a counterweight for the lower car 72 and the lower car. (Not shown) and a second hoist (not shown) are installed. A first main rope (not shown) is applied to the driving sheave of the first hoist. A second main rope (not shown) is wound around the driving sheave of the second hoist. The upper car 71 and the counterweight for the upper car are suspended by the first main rope, and the lower car 72 and the counterweight for the lower car are suspended by the second main rope.

In the hoistway 1, an upper car speed sensor 73 and a lower car speed sensor 74, which are car speed detecting means for detecting the speed of the upper car 71 and the speed of the lower car 72, are provided. Still, in the hoistway 1, there are provided an upper car position sensor 75 and a lower car position sensor 76 which are car position detecting means for detecting the positions of the upper car 71 and the lower car 72. I have.

The car operation detecting means includes an upper car speed sensor 73, a lower car speed sensor 74, an upper car position sensor 75, and a lower car position sensor 76.

The lower part of the upper car 71 is provided with an upper car emergency stop device 77 which is a braking means having the same configuration as the emergency stop device 33 used in the second embodiment. At the lower part of the lower car 72, an emergency stop device 78 for the lower car, which is a braking means having the same configuration as the emergency stop device 77 for the upper car, is mounted.

An output unit 79 is mounted in the control panel 13. An upper car speed sensor 73, a lower car speed sensor 74, an upper car position sensor 75, and a lower car position sensor 76 are electrically connected to the output section 79. A battery 12 is connected to the output unit 79 via a power cable 14. Upper car speed detection signal from upper car speed sensor 73, lower car speed detection signal from lower car speed sensor 74, upper car position detection signal from upper car position sensor 75, and lower car position sensor 7 The lower car position detection signal from 6 is input to the output unit 79. That is, the information from the car operation detecting means is input to the output unit 79.

The output section 79 is connected to the upper car emergency stop device 77 7 and the lower It is connected to the car safety gear 7 8. In addition, the output unit 79 determines whether there is a collision of the upper car 71 or the lower car 72 with the end of the hoistway 1, and the upper car 71 and the lower car 72 based on the information from the car operation detecting means. It is designed to predict the presence or absence of a collision with the vehicle, and to output an operation signal to the upper car safety device 77 and the lower car safety device 78 when a collision is predicted. The emergency stop device 77 for the upper car and the emergency stop device 78 for the lower car are operated by inputting an operation signal.

The monitoring section has a car operation detecting means and an output section 79. The running state of the upper car 71 and the lower car 72 is monitored by the monitoring unit. Other configurations are the same as those of the second embodiment.

Next, the operation will be described. The output unit 79 receives information from the car operation detecting means and outputs it to the output unit 79 to determine whether the upper car 71 or the lower car 72 has collided with the end of the hoistway 1, and whether the upper car 71 It is predicted whether there is a collision with the lower car 72. For example, if a collision between the upper car 71 and the lower car 72 is predicted at the output section 79 due to the cutting of the first main rope suspending the upper car 71, the emergency An operation signal is output to the stopping device 77 and the emergency stop device 78 for the lower car. As a result, the upper car safety device 77 and the lower car safety device 78 are operated, and the upper car 71 and the lower car 72 are braked.

In such an elevator apparatus, the monitoring unit detects the actual movement of each of the upper car 71 and the lower car 72 ascending and descending in the same hoistway 1, Predict the presence or absence of a collision between the upper car 7 1 and the lower car 7 2 based on the information, and output an operation signal to the upper car emergency stop device 7 7 and the lower car emergency stop device 7 8 when a collision is predicted. Since the output unit 79 is provided, even if the speed of each of the upper car 71 and the lower car 72 does not reach the set overspeed, the collision between the upper car 71 and the lower car 7 2 occurs. When it is predicted that the emergency stop device 77 for the upper car and the emergency stop device 78 for the lower car can be operated, the collision between the upper car 71 and the lower car 72 can be avoided. .

Also, since the car operation detecting means has an upper car speed sensor 73, a lower car speed sensor 74, an upper car position sensor 75, and an upper car position sensor 76, the upper car 71 and the lower car 7 The actual movement of each of the two can be easily detected with a simple configuration The

In the above example, the output unit 79 is mounted in the control panel 13, but the output unit 79 may be mounted on each of the upper car 71 and the lower car 72. In this case, as shown in Fig. 12, the upper car speed sensor 73, the lower car speed sensor 74, the upper car position sensor 75, and the lower car position sensor 76 are output from the upper car 71. It is electrically connected to both the unit 79 and the output unit 79 mounted on the lower car 72, respectively. In the above example, the output unit 79 outputs an operation signal to both the emergency stop device 77 for the upper car and the emergency stop device 78 for the lower car. According to the information from the means, the operation signal may be output to only one of the upper car safety device 77 and the lower car safety device 78. In this case, the output unit 79 predicts whether there is a collision between the upper car 71 and the lower car 72, and also determines whether there is an abnormality in the movement of each of the upper car 71 and the lower car 72. . The operation signal is output from the output unit 79 only to the emergency stop device mounted on the abnormally moving one of the upper car 71 and the lower car 72. Embodiment 7

FIG. 13 is a configuration diagram schematically showing an elevator apparatus according to Embodiment 7 of the present invention. In the figure, the upper car 71 has an output section 81 for an upper car as an output section, and the lower car 72 has an output section 82 for a lower car as an output section. An upper car speed sensor 73, an upper car position sensor 75, and a lower car position sensor 76 are electrically connected to the upper car output section 81. A lower car speed sensor 74, a lower car position sensor 76, and an upper car position sensor 75 are electrically connected to the lower car output unit 82.

The upper car output section 81 is electrically connected to an upper car emergency stop device 77 via upper car emergency stop wiring 83 which is a transmission means installed in the upper car 71. In addition, the upper car output unit 81 outputs information from the upper car speed sensor 73, the upper car position sensor 75, and the lower car position sensor 76 (hereinafter, in this embodiment,

Presence of collision with upper car 7 1 and lower car 7 2 based on “Detection information for upper car”), outputs an operation signal to upper car emergency stop device 7 7 when a collision is predicted I'm going to do it. Furthermore, the upper car output unit 81 assumes that the lower car 72 is traveling to the upper car 71 at the maximum speed during normal operation when the upper car detection information is input. It is designed to predict the presence or absence of a collision with the upper car 7 1 and the lower car 7 2.

The lower car output section 82 is electrically connected to a lower car emergency stop device 78 via lower car emergency stop wiring 84 which is a transmission means installed in the lower car 72. In addition, the lower car output section 82 outputs information from the lower car speed sensor 74, the lower car position sensor 76, and the upper car position sensor 75 (hereinafter, in this embodiment,

"Detection information for the lower car") is used to predict the presence or absence of a collision with the upper car 71 of the lower car 72, and to output an activation signal to the lower car emergency stop device 78 when a collision is predicted. It is like that. Furthermore, the lower car output unit 82 assumes that the upper car 71 is traveling to the lower car 72 at the maximum speed during normal operation when the lower car detection information is input. It is now predicting whether there is a collision with the lower car 7 2 or the upper car 7 1.

The operation of the upper car 71 and the lower car 72 is normally controlled at a sufficient distance from each other so that the upper car safety gear 77 and the lower car safety gear 78 do not operate. Other configurations are the same as those of the sixth embodiment.

Next, the operation will be described. For example, when the upper car 7 1 drops to the lower car 7 2 side by cutting the first main rope suspending the upper car 7 1, when the upper car 7 1 approaches the lower car 7 2, the output for the upper car 7 1 In the part 81, a collision between the upper car 71 and the lower car 72 is predicted, and in the output part 82 for the lower car, a collision between the upper car 71 and the lower car 72 is predicted. As a result, an operation signal is output from the upper car output unit 8 1 to the upper car safety device 7 7, and the lower car output unit 8 2 to the lower car safety device 7 8. . As a result, the upper car safety device 77 and the lower car safety device 78 are operated, and the upper car 71 and the lower car 72 are braked.

In such an elevator apparatus, the same effect as in the sixth embodiment is obtained, and the upper car speed sensor 73 is electrically connected only to the upper car output section 81, and the lower car speed sensor 74 is moved downward. Since it is electrically connected only to the car output section 8 2, the upper car speed sensor 7 3 and the lower car output section 8 2, and the lower car speed sensor 7 4 and the upper car It is not necessary to provide an electric wiring between the power supply unit 81 and the power supply unit 81, and the work of installing the electric wiring can be simplified. Embodiment 8

FIG. 14 is a configuration diagram schematically showing an elevator apparatus according to Embodiment 8 of the present invention. In the figure, an upper car 71 and a lower car 72 carry a car distance sensor 91 which is a car distance detecting means for detecting a distance between the upper car 71 and the lower car 72. I have. The car distance sensor 91 has a laser irradiating unit mounted on the upper car 71 and a reflecting unit mounted on the lower car 72. The distance between the upper car 71 and the lower car 72 is determined by the car distance sensor 91 based on the round trip time of the laser light between the laser irradiation section and the reflection section.

An upper car speed sensor 73, a lower car speed sensor 74, an upper car position sensor 75, and a car distance sensor 91 are electrically connected to the upper car output unit 81. An upper car speed sensor 73, a lower car speed sensor 74, a lower car position sensor 76, and a car distance sensor 91 are electrically connected to the lower car output unit 82.

The output section 81 for the upper car is provided with information from the upper car speed sensor 73, the lower car speed sensor 74, the upper car position sensor 75, and the car distance sensor 91 (hereinafter, in this embodiment). , "Detection information for the upper car") to predict the presence or absence of a collision with the lower car 72 of the upper car 71, and output an operation signal to the upper car emergency stop device 77 when a collision is predicted. It is supposed to.

The lower car output unit 82 is used to output information from the upper car speed sensor 73, the lower car speed sensor 74, the lower car position sensor 76, and the car distance sensor 91 (hereinafter, in this embodiment, , "Detection information for the lower car") to predict the presence or absence of a collision with the upper car 71 of the lower car 72, and output an operation signal to the lower car emergency stop device 78 when a collision is predicted. It is supposed to. Other configurations are the same as those of the seventh embodiment.

In such an elevator system, the output unit 79 predicts the presence or absence of a collision between the upper car 71 and the lower car 72 based on the information from the distance sensor 91 between the cars. 7 1 and the lower car 7 2 Monkey.

Note that the door opening / closing sensor 58 of the third embodiment may be applied to the elevator apparatus according to the sixth to eighth embodiments so that an opening / closing detection signal is input to an output unit. The disconnection detection conductor 61 may be applied so that the rope disconnection signal is input to the output unit.

In the second to eighth embodiments, the driving unit is driven by using the electromagnetic repulsive force or the electromagnetic attractive force of the first electromagnetic unit 49 and the first electromagnetic unit 50. It may be driven by utilizing eddy current generated in the repulsion plate. In this case, as shown in FIG. 15, a pulse current is supplied to the electromagnetic magnet 48 as an operation signal, and the eddy current generated in the repulsion plate 51 fixed to the movable portion 40 and the electromagnetic magnet 4 Due to the interaction with the magnetic field from 8, the movable part 40 is displaced.

Further, in Embodiments 2 to 8, the car speed detecting means is provided in the hoistway 1, but may be mounted on the car. In this case, the speed detection signal from the car speed detection means is transmitted to the output unit via the control cable. Embodiment 9

FIG. 16 is a plan sectional view showing an emergency stop device according to Embodiment 9 of the present invention. In the figure, the emergency stop device 155 is provided with a wedge 34, an actuator portion 156 connected to a lower portion of the wedge 34, and a guide fixed above the wedge 34 and fixed to the car 3. Part 36. The actuator section 15 6 is vertically movable together with the wedge 34 with respect to the guide section 36.

The actuator section 156 includes a pair of contact sections 157 that can be brought into contact with and separated from the car guide rail 2, and a pair of link members 158a, 155 that are respectively connected to the contact sections 157. 8b and an operating mechanism 1559 that displaces one link member 1558a with respect to the other link member 1558b in a direction in which each contact portion 1557 comes into contact with or separates from the car guide rail 2. It has a contact portion 157, a link member 158a, 158b, and a support portion 160 supporting the operating mechanism 159. A horizontal shaft 170 passed through a wedge 34 is fixed to the support portion 160. The wedge 34 can be reciprocated horizontally with respect to the horizontal axis 170 '. The link members 158a and 158b cross each other at a portion between one end and the other end. Also, the supporting portion 160 has a connecting member for rotatably connecting the link members 158a, 158b at the crossed portions of the link members 158a, 158b. 1 6 1 is provided. Further, one link member 158a is provided so as to be rotatable about the connecting portion 161 with respect to the other link member 158b.

Each of the contact portions 157 is displaced in a direction in which the other end portions of the link members 158a and 158b are displaced in a direction approaching each other, thereby coming into contact with the car guide rail 2. In addition, each contact portion 157 is displaced in a direction away from two cage guide rails by the other ends of the link members 158a and 158b being displaced away from each other. You.

The operation mechanism 159 is arranged between the other ends of the link members 158a and 158. The operating mechanism 159 is supported by the link members 158a and 158b. Further, the operating mechanism 159 is fixed to the rod-shaped movable portion 162 connected to one link member 158a and the other link member 158b, and travels through the movable portion 162. And a drive unit 163 for performing reverse displacement. Actuation mechanism 1 5 9

Together with 58a and 158b, it is rotatable around the connecting member 161. The movable part 16 2 includes a movable core 16 4 housed in the driving part 16 3 and a movable core 1

It has a connecting rod 165 for connecting the link 64 and the link member 158a to each other. In addition, the movable part 162 moves between the contact position where each contact part 157 contacts the car guide rail 2 and the separation position where each contact part 157 is separated from the car guide rail 2. Reciprocating displacement is possible.

The driving part 16 3 is a pair of restricting parts 16 6 a, 1

Fixed core 1 6 6 surrounding the moving core 1 64 including the side wall 1 6 6 c connecting the 6 6 b and each regulating part 1 6 6 a, 1 6 6, and housed in the fixed core 1 6 6 The first coil 167 that displaces the movable core 164 in the direction that comes into contact with one of the regulating parts 166a when energized, and the first coil 166 that is housed in the fixed core 166, and the other regulating part that is energized The second coil 1 6 8 for displacing the movable core 1 64 in the direction contacting 1 6 6 b and the first coil 1

6 7 and an annular permanent magnet 16 9 disposed between the second coil 16 8. The

The negative regulating section 16 6 a is arranged such that the movable core 16 4 is in contact with the movable section 16 2 when the movable section 16 2 is at the separated position. Further, the other restricting portion 166b is arranged such that the movable iron core 164 contacts the movable portion 162 when the movable portion 162 is at the contact position.

The first coil 167 and the second coil 168 are annular electromagnetic coils surrounding the movable part 162. Also, the first coil 16 7 is disposed between the permanent magnet 16 9 and one restricting portion 16 a, and the second coil 16 8 is disposed between the permanent magnet 16 9 and the other restricting portion 16 6 a. b.

In a state where the movable iron core 16 4 is in contact with one of the restricting portions 16 6 a, a space serving as a magnetic resistance exists between the movable iron core 16 4 and the other restricting portion 16 6 b. The permanent magnet Γ69 has a larger amount of magnetic flux on the first coil 167 side than on the second coil 168 side, and the movable iron core 164 comes into contact with one of the regulating portions 166a. It is kept as it is. When the movable iron core 16 4 is in contact with the other regulating part 16 6 b, a space serving as a magnetic resistance is provided between the movable iron core 16 4 and one regulating part 16 6 a. As a result, the amount of magnetic flux of the permanent magnet 169 becomes larger on the second coil 168 side than on the first coil 167 side, and the movable iron core 164 is connected to the other regulating part 166 b. It is kept in contact. ′ The second coil 168 is configured to receive power as an operation signal from the output unit 32. Further, the second coil 1668 is configured to generate a magnetic flux against a force for holding the movable core 1664 in contact with one of the restricting portions 16a by an input of an operation signal. In addition, the first coil 167 is configured to receive power as a return signal from the output unit 32. In addition, the first coil 1667 generates a magnetic flux against the force for maintaining the contact of the movable iron core 164 with the other regulating portion 166b by the input of the return signal.

Other configurations are the same as those of the second embodiment.

Next, the operation will be described. During normal operation, the movable part 16 2 is in the open position, and the movable core 16 4 is held by the permanent magnet 16

6 a. The movable iron core 16 4 is in contact with one of the In this state, the wedge 34 is kept spaced from the guide portion 36 and is separated from the car guide rail 2.

Thereafter, as in the second embodiment, an operation signal is output from the output unit 32 to each of the safety gears 155, so that the second coil 168 is energized. As a result, a magnetic flux is generated around the second coil 168, and the movable iron core 164 is displaced in a direction approaching the other regulating portion 166b, and displaced from the separated position to the contact position. At this time, the contact portions 157 are displaced toward each other and come into contact with the car guide rail 2. As a result, the wedge 34 and the actuator 155 are braked.

Thereafter, the guide section 36 continues to descend, approaching the wedge 34 and the actuator section 1555. Thereby, the wedge 34 is guided along the inclined surface 44, and the car guide rail 2 is sandwiched between the wedge 34 and the contact surface 45. Thereafter, the operation is performed in the same manner as in the second embodiment, and the car 3 is braked.

At the time of return, a return signal is transmitted from the output unit 32 to the first coil 1667. As a result, magnetic flux is generated around the first coil 167, and the movable iron core 164 is displaced from the contact position to the separation position. Thereafter, similarly to the second embodiment, the pressing of the wedge 34 and the contact surface 45 against the car guide rail 2 is released.

In such an elevator device, the operating mechanism 159 is configured to displace the pair of contact portions 157 through the respective link members 158a and 158b. The same effect can be obtained, and the number of operating mechanisms 159 for displacing the pair of contact portions 157 can be reduced. Embodiment 10

FIG. 17 is a partially cutaway side view showing the safety device according to Embodiment 10 of the present invention. In the figure, an emergency stop device 1 75 is provided with a wedge 34, an actuator section 1 76 connected to a lower portion of the wedge 34, and a guide section 3 disposed above the wedge 34 and fixed to the car 3. And 6.

Actuator section 176 has an operation mechanism 159 having the same configuration as that of the ninth embodiment, and a link member 177 which is displaced by the displacement of movable section 162 of operation mechanism 159. are doing. The operation mechanism 159 is fixed to the lower part of the car 3 so that the movable part 162 is reciprocated in the horizontal direction with respect to the car 3. The link member 177 is rotatably provided on a fixed shaft 180 fixed to the lower part of the car 3. The fixed shaft 180 is disposed below the operating mechanism 159.

The link member 177 has a first link portion 178 and a second link portion 179 extending in different directions from the fixed shaft 180 as a starting point, and has an overall shape of the link member 177. Is shaped like a letter. That is, the second link portion 179 is fixed to the first link portion 178, and the first link portion 178 and the second link portion 179 are integrated around the fixed shaft 180. It is rotatable.

The length of the first link portion 178 is longer than the length of the second link portion 179. In addition, a long hole 182 is provided at the tip of the first link portion 178. At the lower part of the wedge 34, a slide bin 183 slidably passed through the elongated hole 182 is fixed. That is, a wedge 34 is slidably connected to the distal end of the first link portion 178. The distal end of the movable portion 162 is rotatably connected to the distal end of the second link portion 179 via a connecting pin 181.

The link member 177 has an opening position for separating the wedge 34 below the guide portion 36 and a wedge 34 inserted between the car guide rail and the guide portion 36. It can be reciprocated between the operating position. The movable part 162 projects from the driving part 163 when the link member 177 is at the separation position, and is retreated to the driving part 163 when the link member 177 is at the operating position. ing.

Next, the operation will be described. During normal operation, the link member 1 7 7

The drive unit 62 is retracted to the drive unit 16 3 and is located at the open position. At this time, the wedge 34 is kept apart from the guide portion 36 and is separated from the car guide rail.

Thereafter, as in the second embodiment, an operation signal is output from the output unit 32 to each of the emergency stop devices 1.

Is output to 75, and the movable part 16 2 is advanced. As a result, the link member 177 is rotated about the fixed shaft 180 and is displaced to the operating position. As a result, the wedge 34 comes into contact with the guide portion 36 and the car guide rail, and is inserted between the guide portion 36 and the car guide rail. As a result, the car 3 is braked. At the time of return, a return signal is transmitted from the output unit 32 to the safety device 175, and the movable unit 162 is urged in the backward direction. In this state, the car 3 is raised to release the wedge 34 from being inserted between the guide portion 36 and the car guide rail.

Even with such an elevator apparatus, the same effect as in the second embodiment can be obtained. Embodiment 11 1.

FIG. 18 is a configuration diagram schematically showing an elevator apparatus according to Embodiment 11 of the present invention. In the figure, a hoisting machine 101 as a driving device and a control panel 102 electrically connected to the hoisting machine 101 and controlling the operation of the elevator are installed in the upper part of the hoistway 1. Have been. The hoisting machine 101 includes a driving device main body 103 including a motor, a driving sheave 104 on which a plurality of main ports 4 are wound and rotated by the driving device main body 103. The hoisting machine 101 has a deflector wheel 105 around which each main rope 4 is wound, and brakes the rotation of the drive sheave 104 to decelerate the car 3. A brake device for the hoisting machine (braking device for deceleration) 106 serving as a braking means is provided.The car 3 and the counterweight 107 are suspended in the hoistway 1 by each main rope 4. The car 3 and the counterweight 107 are moved up and down in the hoistway 1 by driving the hoist 101.

The emergency stop device 33, the hoisting machine brake device 106, and the control panel 102 are electrically connected to a monitoring device 108 that constantly monitors the status of the elevator. The monitoring device 1108 includes a car position sensor 1109 which is a car position detecting unit for detecting the position of the car 3, and a car speed sensor 110 which is a car speed detecting unit for detecting the speed of the car 3. The car acceleration sensor 111, which is a car acceleration detector for detecting the acceleration of the car 3, is electrically connected to the car acceleration sensor 111. The car position sensor 109, the car speed sensor 110, and the car acceleration sensor 111 are provided in the hoistway 1.

The detecting means 112 for detecting the state of the elevator has a car position sensor 109, a car speed sensor 110 and a car acceleration sensor 111. Further, as the car position sensor 109, an encoder that detects the position of the car 3 by measuring the amount of rotation of a rotating body that rotates following the movement of the car 3 and a displacement amount of linear movement It has a linear encoder that detects the position of car 3 by measuring, or, for example, has a light emitter and a light receiver provided in hoistway 1 and a reflector provided in car 3 An optical displacement measuring device that detects the position of the car 3 by measuring the time required for light reception by the light receiving device, or the like can be given.

The monitoring device 108 has a storage unit (memory unit) in which a plurality of (two in this example) abnormality determination criteria (setting data) serving as criteria for determining the presence or absence of an elevator abnormality are stored in advance. 13 and an output unit (arithmetic unit) 114 for detecting the presence / absence of an abnormality in the elevator based on the information of the detection unit 112 and the storage unit 113. In this example, the car speed abnormality judgment criterion, which is the abnormality judgment criterion for the speed of the car 3, and the car acceleration abnormality judgment criterion, which is the abnormality judgment criterion for the acceleration of the car 3, are stored in the storage unit 113. .

FIG. 19 · is a graph showing the car speed abnormality determination criteria stored in the storage unit 113 of FIG. In the figure, the elevator section of the car 3 in the hoistway 1 (the section between one terminal floor and the other terminal floor) includes a car 3 where the car 3 is accelerated or decelerated near the other terminal floor. A deceleration section and a constant speed section in which the car 3 moves at a constant speed between the acceleration / deceleration sections are provided.

In the car speed abnormality judgment criteria, three levels of detection patterns are set corresponding to the position of car 3. In other words, the car speed abnormality judgment criterion includes the normal speed detection pattern (normal level) 1 15 which is the speed of car 3 during normal operation, and the first speed which is larger than the normal speed detection pattern 1 15. The abnormal speed detection pattern (first abnormal level) 1 16 and the second abnormal speed detection pattern (second abnormal level) 1 17 that is larger than the first abnormal speed detection pattern 1 16 It is set corresponding to the position of car 3.

Normal speed detection pattern 1 15, 1st abnormal speed detection pattern 1 16 and 2nd abnormal speed detection pattern 1 17 are continuous toward the terminal floor in the acceleration / deceleration section so that they have a constant value in the constant speed section. Each is set so as to be smaller as a whole. The difference between the 1st abnormal speed detection pattern 1 16 and the normal speed detection pattern 1 15 and the difference between the 2nd abnormal speed detection pattern 1 17 and the 1st abnormal speed detection pattern 1 16 Each is set to be almost constant at all locations in the area. FIG. 20 is a graph showing the car acceleration abnormality determination criteria stored in the storage unit 113 of FIG. In the figure, three levels of detection patterns are set corresponding to the position of the car 3 in the car acceleration abnormality determination criterion. In other words, the car acceleration abnormality determination criterion includes a normal acceleration detection pattern (normal level) 118, which is the acceleration of the car 3 during normal operation, and a value larger than the normal acceleration detection pattern 118. 1 Abnormal acceleration detection pattern (1st abnormal level) 1 19 and 2nd abnormal acceleration detection pattern (2nd abnormal level) 1 2 0 Each is set corresponding to the position of car 3.

The normal acceleration detection pattern 1 18, the first abnormal acceleration detection pattern 1 19 and the second abnormal acceleration detection pattern 1 220 have a positive value in one acceleration / deceleration section so that the value becomes zero in the constant speed section. In the other acceleration and deceleration sections, each is set to be a negative value. The difference between the 1st abnormal acceleration detection pattern 1 19 and the normal acceleration detection pattern 1 18 and the difference between the 2nd abnormal acceleration detection pattern 1 20 and the 1st abnormal acceleration detection pattern 1 19 Are set so that they are almost constant at all positions.

That is, the storage unit 113 stores the normal speed detection pattern 115, the first abnormal speed detection pattern 116 and the second abnormal speed detection pattern 117 as car speed abnormality determination criteria, The normal acceleration detection pattern 1 18, the first abnormal acceleration detection pattern 1 19, and the second abnormal acceleration detection pattern 1 20 are stored as car acceleration abnormality determination criteria.

The output section 114 has an emergency stop device 33, a control panel 102, a hoisting machine

106, the detecting means 112 and the storage part 113 are electrically connected to each other. The output section 114 receives a position detection signal from the car position sensor 109, a speed detection signal from the car speed sensor 110, and an acceleration detection signal from the car acceleration sensor 111. Each is continuously input over time. The output unit 114 calculates the position of the car 3 based on the input of the position detection signal, and the speed of the car 3 and the speed of the car 3 based on the input of the speed detection signal and the acceleration detection signal. Multiple types of acceleration

(Two types in this example) are calculated as the abnormality determination factors.

The output section 1 14 indicates that the speed of car 3 has exceeded the 1st abnormal speed detection pattern 1 16 Or when the acceleration of the car 3 exceeds the first abnormal acceleration detection pattern 1 19, an operation signal (trigger signal) is output to the hoisting machine brake device 104. The output unit 114 outputs a stop signal for stopping the drive of the hoisting machine 101 to the control panel 102 simultaneously with the output of the operation signal to the hoisting machine brake device 104. It is supposed to. Further, the output unit 114 outputs a signal when the speed of the car 3 exceeds the second abnormal speed detection pattern 1 17 or when the acceleration of the car 3 exceeds the second abnormal acceleration detection pattern 120. An operation signal is output to the upper machine brake device 104 and the emergency stop device 33. That is, the output unit 114 determines the braking means that outputs the operation signal according to the degree of abnormality in the speed and acceleration of the car 3.

Other configurations are the same as those of the second embodiment.

Next, the operation will be described. When the position detection signal from the car position sensor 109, the speed detection signal from the car speed sensor 110, and the caro speed detection signal from the car acceleration sensor 111 are input to the output unit 114 The output unit 114 calculates the position, speed, and acceleration of the car 3 based on the input of each detection signal. After that, the output unit 114 outputs the car speed abnormality judgment criterion and the car acceleration abnormality judgment criterion respectively obtained from the storage unit 113, and the speed and the speed of the car 3 calculated based on the input of each detection signal. The acceleration and the acceleration are compared to detect whether or not each of the speed and the acceleration of the car 3 is abnormal.

During normal operation, the speed of car 3 has almost the same value as the normal speed detection pattern, and the acceleration of car 3 has almost the same value as the normal acceleration detection pattern. It is detected that there is no abnormality in the speed and acceleration of the car 3, and normal operation of the elevator is continued.

For example, if for some reason the speed of car 3 rises abnormally and exceeds the first abnormal speed detection pattern 1 16, the output section 1 14 detects that there is an abnormality in the speed of car 3. The operation signal is output from the output unit 114 to the hoisting machine brake device 106, and the stop signal is output to the control panel 102, respectively. As a result, the hoist 101 is stopped, the hoist braking device 106 is operated, and the rotation of the drive sheave 104 is braked. Also, when the acceleration of the car 3 abnormally increases and exceeds the first abnormal acceleration set value 1 19, the operation signal and the stop signal are transmitted to the hoisting machine brake device 106 and the control panel 102. The output is output from the output sections 114, respectively, and the rotation of the drive sheave 104 is braked. When the speed of the car 3 further increases after the operation of the hoist brake device 106 and exceeds the second abnormal speed set value 1 17, the operation signal to the hoist brake device 106 is provided. An output signal is output from the output section 114 to the safety device 33 while maintaining the output of. As a result, the emergency stop device 33 is operated, and the car 3 is braked by the same operation as in the second embodiment.

Also, when the acceleration of the car 3 further increases after the operation of the hoisting machine brake device 106 and exceeds the second abnormal acceleration set value 120, the braking of the hoisting machine brake device 106 is also performed. While maintaining the output of the operation signal, the operation signal is output from the output section 1 14 to the safety device 33, and the safety device 33 is operated.

In such an elevator apparatus, the monitoring device 108 acquires the speed of the car 3 and the acceleration of the car 3 based on the information from the detecting means 112 for detecting the state of the elevator, and acquires the acquired speed of the car 3 When any of the accelerations of the car 3 is judged to be abnormal, an operation signal is output to at least one of the brake device 106 for the hoisting machine and the emergency stop device 33, so that monitoring is performed. The detection of an elevator abnormality by the device 108 can be performed earlier and more reliably, and the time required from the occurrence of the elevator abnormality to the generation of the braking force on the car 3 can be shortened. it can. In other words, the presence or absence of abnormality in a plurality of types of abnormality determination elements such as the speed of the car 3 and the acceleration of the car 3 is separately determined by the monitoring device 108, so that the detection of the elevator abnormality by the monitoring device 108 can be improved. As a result, the time required from the occurrence of an abnormality in the elevator to the generation of the braking force on the car 3 can be shortened.

The monitoring device 108 also stores a car speed abnormality judgment criterion for judging the presence or absence of an abnormality in the speed of the car 3 and a car acceleration abnormality judgment criterion for judging the presence of an abnormality in the acceleration of the car 3. Since the storage unit 1 13 is used, it is possible to easily change the criteria for determining whether or not each of the speed and acceleration of the car 3 is abnormal, and to easily change the design of the elevator. Can respond. Also, the car speed abnormality determination criteria include a normal speed detection pattern 1 15, a first abnormal speed detection pattern 1 16 set to a value larger than the normal speed detection pattern 1 15, and a first abnormal speed detection pattern. The second abnormal speed detection pattern 1 17 which is set to a value larger than 1 16 is set, and the monitoring device 10 0 when the speed of the car 3 exceeds the first abnormal speed detection pattern 1 16 An operation signal is output from 8 to the brake device 106 for the hoisting machine, and when the speed of the car 3 reaches the second abnormal speed detection pattern 1 17 the monitoring device 10 8 Since an operation signal is output to 106 and the safety gear 33, the car 3 can be braked stepwise according to the magnitude of the speed abnormality of the car 3. Therefore, the frequency of applying a large impact to the car 3 can be reduced, and the car 3 can be stopped more reliably.

In addition, the car acceleration abnormality determination criterion includes a normal acceleration detection pattern 1 18 and a first abnormal acceleration detection pattern having a value larger than the normal acceleration detection pattern 1 18.

1 1 9 and the 2nd abnormal acceleration detection pattern 1 20 which is set to a value larger than the 1st abnormal acceleration detection pattern 1 19 are set, and the acceleration of car 3 is set to the 1st abnormal acceleration detection pattern 1 Monitoring device when the load exceeds 1 9 Brake device for the winding machine from 108

An operation signal is output to 106, and the acceleration of car 3 is changed to the second abnormal speed detection pattern 1 2

When 0 is exceeded, the operation signal is output from the monitoring device 108 to the hoisting machine brake device 106 and the emergency stop device 33, so the magnitude of the abnormal acceleration of the car 3 The car 3 can be braked gradually according to Usually, the acceleration of the car 3 occurs before the speed of the car 3 becomes abnormal, so that the frequency of applying a large impact to the car 3 can be further reduced, and the car 3 can be stopped more reliably. Can be done.

Also, the normal speed detection pattern 1 15, the 1st abnormal speed detection pattern 1 16

(2) Since the abnormal speed detection pattern 1 17 is set corresponding to the position of the car 3, the first abnormal speed detection pattern 1 16 and the second abnormal speed detection pattern 1 17 Can be set to correspond to the normal speed detection pattern 1 15 at all positions in the vertical section. Therefore, especially in the acceleration / deceleration section, the normal speed detection pattern 1

Since the value of 15 is small, the 1st abnormal speed detection pattern 1 16 and the 2nd abnormal speed detection Each of the patterns 1 17 can be set to a relatively small value, and the impact on the car 3 due to braking can be reduced.

In the above example, the car speed sensor 110 is used by the monitoring device 108 to obtain the speed of the car 3, but the car position sensor is used without using the car speed sensor 110. The speed of the car 3 may be derived from the position of the car 3 detected by the sensor 109. That is, the speed of the car 3 may be obtained by differentiating the position of the car 3 calculated based on the position detection signal from the car position sensor 109.

Also, in the above example, the car acceleration sensor 111 is used by the monitoring device 108 to acquire the acceleration of the car 3, but the car position sensor 1 11 is used without using the car acceleration sensor 111. The acceleration of the car 3 may be derived from the position of the car 3 detected by 09. That is, the acceleration of the car 3 may be obtained by differentiating the position of the car 3 calculated by the position detection signal from the car position sensor 109 twice.

Further, in the above example, the output unit 114 determines the braking means that outputs the operation signal in accordance with the degree of abnormality in the speed and acceleration of the car 3 which is each abnormality determination element. However, the braking means for outputting the operation signal may be determined in advance for each abnormality determining element. Embodiment 1 2.

FIG. 21 is a configuration diagram schematically showing an elevator apparatus according to Embodiment 12 of the present invention. In the figure, a plurality of hall call buttons 125 are provided at the hall on each floor. In the car 3, a plurality of destination floor buttons 1 26 are provided. Further, the monitoring device 127 has an output part 114. The output unit 114 is provided with an abnormality criterion generator 1 that generates a criterion for determining a car speed abnormality and a criterion for determining a car acceleration abnormality

28 are electrically connected. Abnormality judgment criterion generator 1 2 8

1 2 5 and each destination floor button 1 2 6 are electrically connected. The abnormality detection criterion generation unit 128 receives a position detection signal from the car position sensor 109 via the output unit 114.

The abnormality criterion generator 1 2 8 is composed of a plurality of car speed abnormality criterion and a plurality of car acceleration, which are the abnormality criterion in all cases where the car 3 moves up and down between floors. Storage unit (memory unit) that stores the abnormality judgment criteria 1 and 2, and the car speed abnormality judgment criteria and the car acceleration abnormality judgment criteria are selected one by one from the storage unit 1 and the selected car speed abnormality judgment criteria. And a generation unit 130 that outputs the car acceleration abnormality determination criterion to the output unit 114.

In each car speed abnormality determination criterion, a three-stage detection pattern similar to the car speed abnormality determination criterion shown in FIG. 19 of Embodiment 11 is set in association with the position of car 3. Further, in each car acceleration abnormality determination criterion, a three-stage detection pattern similar to the car acceleration abnormality determination criterion shown in FIG. 20 of Embodiment 11 is set corresponding to the position of car 3.

The generation unit 130 calculates the detected position of the car 3 based on the information from the car position sensor 109, and outputs the information from at least one of the hall call buttons 125 and the destination floor buttons 126. Is used to calculate the destination floor of car 3. Further, the generation unit 130 selects one of the car speed abnormality judgment criterion and the car acceleration abnormality judgment criterion one by one with the calculated detection position and destination floor as one and the other end floors. Other configurations are the same as those of the eleventh embodiment.

Next, the operation will be described. The position detection signal is constantly input to the generation unit 130 from the car position sensor 109 via the output unit 114. When any one of the hall call buttons 1 25 and the destination floor button 1 26 is selected by a passenger or the like, for example, and a call signal is input to the generation unit 130 from the selected button, the generation unit 130 In, the detection position and the destination floor of the car 3 are calculated based on the input of the position detection signal and the call signal, and the car speed abnormality judgment criterion and the car acceleration abnormality judgment criterion are selected one by one. Thereafter, the generator 130 outputs the selected car speed abnormality determination criterion and the car acceleration abnormality determination criterion to the output unit 114.

The output unit 114 detects the presence or absence of abnormality in the speed and acceleration of the car 3 in the same manner as in the embodiment 11. The subsequent operation is the same as in the ninth embodiment.

In such an elevator device, the abnormality determination criterion generation device uses the information from at least one of the hall call button 125 and the destination floor button 126 to determine whether or not the car speed abnormality has been determined. Is generated, so it corresponds to the destination floor It is possible to generate a car speed abnormality judgment criterion and a car acceleration abnormality judgment criterion, and reduce the time required from the occurrence of an elevator malfunction to the generation of braking force even when a different destination floor is selected. be able to.

In the above example, the generation unit 130 uses the plurality of car speed abnormality judgment criteria and the plurality of car acceleration abnormality judgment criteria stored in the storage unit 1229 to generate the car speed abnormality judgment criteria and the car acceleration abnormality judgment criteria. The abnormal speed detection pattern and the abnormal acceleration detection pattern are directly generated based on the normal speed pattern and the normal acceleration pattern of the car 3 generated by the control panel 102, respectively. Good Embodiment 13

FIG. 22 is a configuration diagram schematically showing an elevator apparatus according to Embodiment 13 of the present invention. In this example, each of the main ropes 4 is connected to the upper part of the car 3 by a cleat device 13 1. The monitoring device 108 is mounted on the top of the car 3. The output section 114 is provided with a car position sensor 109, a car speed sensor 110, and a girder device 131, and detects rope breakage for detecting whether or not each main rope 4 is broken. The plurality of rope sensors 13 2 are electrically connected to each other. The detecting means 112 has a car position sensor 109, a car speed sensor 110, and a rope sensor 132.

Each of the rope sensors 13 2 outputs a break detection signal to the output section 114 when the main rope 4 breaks. In addition, the storage unit 113 stores the same car speed abnormality determination criterion as in the embodiment 11 as shown in FIG. 19 and the rope abnormality which is a criterion for determining whether there is an abnormality in the main rope 4. The judgment criteria are stored. The first abnormality level, in which at least one main rope 4 is broken, and the second abnormality level, in which all main ropes 4 are broken, are set as the rope abnormality determination criteria.

In the output unit 114, the position of the car 3 is calculated based on the input of the position detection signal, and the speed of the car 3 and the state of the main rope 4 are determined based on the respective input of the speed detection signal and the break signal. Calculated as anomaly judgment factor for each species (two in this example) Get out.

The output unit 1 14 is provided with a brake for the hoisting machine when the speed of the car 3 exceeds the first abnormal speed detection pattern 1 16 (Fig. 19) or when at least one main rope 4 is broken. An operation signal (trigger signal) is output to the device 104. In addition, the output unit 114 is connected to the hoisting machine block when the speed of the car 3 exceeds the second abnormal speed detection pattern 117 (FIG. 19) or when all the main ropes 4 are broken. An operation signal is output to the rake device 104 and the safety device 33. That is, the output unit 114 determines the braking means that outputs the operation signal in accordance with the speed of the car 3 and the degree of abnormality in the state of the main rope 4.

FIG. 23 is a configuration diagram showing the cleat device 13 1 and each rope sensor 13 2 of FIG. 22. FIG. 24 is a configuration diagram showing a state where one main rope 4 of FIG. 23 has been broken. In the figure, the cleat device 13 1 has a plurality of rope connecting portions 134 connecting each main rope 4 to the car 3. Each of the rope connecting portions 134 has an elastic spring 133 interposed between the main rope 4 and the car 3. The position of the car 3 with respect to each main rope 4 can be displaced by the expansion and contraction of each elastic spring 13.

The rope sensor 13 2 is installed at each rope connection 1 34. Each rope sensor 13 2 is a displacement measuring device that measures the amount of extension of the elastic spring 13 3. Each rope sensor 13 2 constantly outputs a measurement signal corresponding to the amount of extension of the elastic spring 13 3 to the output unit 14. To the output unit 114, a measurement signal when the extension amount due to the restoration of the elastic springs 133 reaches a predetermined amount is input as a break detection signal. Note that a weighing device that directly measures the tension of each main rope 4 may be installed at each rope connection section 134 as a rope sensor.

Other configurations are the same as those of the eleventh embodiment.

Next, the operation will be described. When the position detection signal from the car position sensor 109, the speed detection signal from the car speed sensor 110, and the break detection signal from each rope sensor 131 are input to the output unit 114, output In the section 114, the position of the car 3, the speed of the car 3, and the number of breaks of the main rope 4 are calculated based on the input of each detection signal. Thereafter, the output unit 114 calculates the speed based on the car speed abnormality criterion and the rope abnormality criterion obtained from the storage unit 113 and the input of each detection signal. The speed of the car 3 and the number of broken main ropes 4 are compared, and the presence or absence of abnormality in the speed of the car 3 and the state of the main rope 4 is detected.

During normal operation, the speed of car 3 has almost the same value as the normal speed detection pattern, and the number of breaks in main rope 4 is zero. It is detected that there is no abnormality in each of the conditions 4 and normal operation of the elevator is continued.

For example, if for some reason the speed of car 3 rises abnormally and exceeds the first abnormal speed detection pattern 1 16 (Fig. 19), the output section will indicate that the speed of car 3 is abnormal. The operation signal is detected by 114 and the operation signal is output from the output unit 114 to the brake device 106 for the hoist, and the stop signal is output to the control panel 102. As a result, the hoisting machine 101 is stopped, the hoisting machine brake device 106 is operated, and the rotation of the drive sheave 104 is braked.

In addition, even when at least one main rope 4 is broken, an operation signal and a stop signal are output from the output unit 114 to the hoisting machine brake device 106 and the control panel 102, respectively. The rotation of the drive sheave 104 is braked.

If the speed of the car 3 further rises after the operation of the brake device 106 for the hoisting machine and exceeds the second abnormal speed set value 1 17 (Fig. 19), the brake device 10 10 for the hoisting machine While the output of the operation signal to 6 is maintained, the operation signal is output to the safety gear 33 from the output section 114. As a result, the emergency stop device 33 is actuated, and the car 3 is braked by the same operation as in the second embodiment.

In addition, even if all the main ropes 4 are broken after the operation of the hoisting machine brake device 106, the output section is maintained while maintaining the output of the operating signal to the hoisting machine brake device 106. An operation signal is output from 1 1 4 to the safety gear 3 3, and the safety gear 3 3 is activated.

In such an elevator device, the monitoring device 108 acquires the speed of the car 3 and the state of the main rope 4 based on information from the detecting means 112 for detecting the condition of the elevator, and the acquired car 3 When it is determined that any of the speed of the main rope 4 and the state of the main rope 4 are abnormal, an operation signal is output to at least one of the brake device 106 for the hoisting machine and the emergency stop device 33. , The number of targets for abnormality detection is large. It becomes possible to detect not only abnormalities in the speed of the car 3 but also abnormalities in the state of the main ropes 4, making it possible to more quickly and more reliably detect elevator abnormalities by the monitoring device 108. . Therefore, it is possible to further reduce the time required from the occurrence of the elevator abnormality to the generation of the power for controlling the car 3.

In the above example, the rope sensor 13 2 is installed on the rope retaining device 13 1 provided on the car 3, but the rope sensor 13 2 is attached on the rope retaining device provided on the balancing weight 107. 2 may be installed.

In the above example, one end and the other end of the main rope 4 are connected to the car 3 and the counterweight 107, respectively, and the car 3 and the counterweight 107 are suspended in the hoistway 1. The present invention is applied to an elevator apparatus of the following type. The main rope 4 having one end and the other end connected to the structure of the hoistway 1 is wound around a car hoist and a counterweight hoist, respectively. The present invention may be applied to a type of elevator device that suspends the car 3 and the counterweight 107 in the hoistway 1. In this case, the rope sensor is installed on a rope cleat provided on a structure in the hoistway 1. Embodiment 1 4.

FIG. 25 is a configuration diagram schematically showing an elevator apparatus according to Embodiment 14 of the present invention. In this example, the rope sensor 135 as the rope break detection unit is a conductor embedded in each main rope 4. Each conductor extends in the length direction of the main rope 4. One end and the other end of each conductor are electrically connected to the output section 114, respectively. A weak current flows through each conductor. To the output unit 114, the respective interruption of the current supply to each conductor is input as a break detection signal.

Other configurations and operations are the same as those of the thirteenth embodiment.

In such an elevator device, the breakage of each main rope 4 is detected by interrupting the conduction to the conductor embedded in each main rope 4, so that the tension of each main rope 4 due to acceleration and deceleration of the car 3 is detected. The presence or absence of breakage of each main rope 4 can be more reliably detected without being affected by the change. Embodiment 15 FIG. 26 is a configuration diagram schematically showing an elevator apparatus according to Embodiment 15 of the present invention. In the figure, a car position sensor 109, a car speed sensor 110, and a door sensor 140, which is an entrance / exit opening / closing detection unit for detecting the opening / closing state of a car entrance / exit 26, are electrically connected to an output unit 114. It is connected to the. The detection means 112 has a car position sensor 109, a car speed sensor 110 and a door sensor 140.

The door sensor 140 outputs a door-closed detection signal to the output unit 114 when the car entrance 26 is in a door-closed state. In addition, the storage unit 113 has the same car speed abnormality judgment criterion as in Embodiment 11 as shown in FIG. The entrance / exit status abnormality judgment criteria are stored. The entrance / exit state abnormality determination criterion is an abnormality determination criterion that the state where the car 3 is raised and lowered and the door is not closed is regarded as abnormal.

The output unit 1 1 14 calculates the position of the car 3 based on the input of the position detection signal, and the speed of the car 3 and the car entrance 2 based on the input of the speed detection signal and the door closing detection signal. The six conditions are calculated as multiple types (two types in this example) of abnormality judgment factors.

The output unit 1 14 outputs when the car 3 is moved up or down with the car entrance 26 not closed, or the speed of the car 3 exceeds the first abnormal speed detection pattern 1 16 (Fig. 19). Sometimes, an operation signal is output to the hoisting machine brake device 104. When the speed of the car 3 exceeds the second abnormal speed detection pattern 1 17 (FIG. 19), the output section 1 14 outputs the brake device 104 for the hoisting machine and the emergency stop device 3 3 An operation signal is output to the controller.

FIG. 27 is a perspective view showing the car 3 and the door sensor 140 of FIG. FIG. 28 is a perspective view showing a state in which the car entrance 26 of FIG. 27 is open. In the figure, the door sensor 140 is disposed above the car entrance 26 and at the center of the car entrance 26 in the direction of the frontage of the car 3. The door sensor 140 detects the displacement of the pair of car doors 28 to the respective door closing positions, and outputs a door closing detection signal to the output unit 114.

The door sensor 140 may be a contact sensor that detects a door closed state by being brought into contact with a fixed portion fixed to each car door 28, or a non-contact door closed state. And the like. Further, a pair of landing doors 142 that open and close the landing entrances 141 are provided at the landing entrances 141. Each of the landing doors 14 2 is engaged with each of the car doors 28 by an engaging device (not shown) when the car 3 is landing on the landing floor, and is displaced together with each of the car doors 28. You.

Other configurations are the same as those of the eleventh embodiment.

Next, the operation will be described. When the position S detection signal from the car position sensor 109, the speed detection signal from the car speed sensor 110, and the door closing detection signal from the door sensor 140 are input to the output unit 114, output In the section 114, the position of the car 3, the speed of the car 3, and the state of the car entrance 26 are calculated based on the input of each detection signal. After that, the output unit 114 outputs the car speed abnormality judgment criterion and the entrance / exit abnormality judgment criterion respectively obtained from the storage unit 113, and the speed and the like of the car 3 calculated based on the input of each detection signal. The state of the car door 28 is compared with the speed of the car 3 and the presence or absence of an abnormality in the state of the car 3 and the state of the car entrance 26 is detected.

During normal operation, the speed of car 3 has almost the same value as the normal speed detection pattern, and car entrance 26 when car 3 is moving up and down is closed. It is detected that there is no abnormality in each of the speed of the car 3 and the state of the car entrance 26, and the normal operation of the elevator is continued.

For example, if for some reason the speed of car 3 rises abnormally and exceeds the first abnormal speed detection pattern 1 16 (Fig. 19), the output section will indicate that the speed of car 3 is abnormal. Detected by 114, the operation signal is output from the output unit 114 to the hoisting machine brake device 106, and the stop signal is output to the control panel 102. As a result, the hoisting machine 101 is stopped, the hoisting machine brake device 106 is operated, and the rotation of the drive sheave 104 is braked.

In addition, even when the car entrance 26 is not closed when the car 3 is raised and lowered, the abnormality of the car entrance 26 is detected by the output section 114, and the operation signal and A stop signal is output from the output unit 114 to the hoisting machine brake device 106 and the control panel 102, respectively, and the rotation of the drive sheave 104 is braked.

If the speed of the car 3 further increases after the operation of the hoisting machine brake device 106 and exceeds the second abnormal speed set value 1 17 (Fig. 19), the hoisting machine brake device 10 To 6 While the output of the operation signal is maintained, the operation signal is output from the output section 114 to the safety device 33. As a result, the emergency stop device 33 is actuated, and the car 3 is braked by the same operation as in the second embodiment.

In such an elevator device, the monitoring device 108 acquires the speed of the car 3 and the condition of the car entrance 26 based on the information from the detecting means 112 detecting the condition of the elevator, and the acquired car 3 When it is determined that any of the speed of the car and the state of the car entrance 26 is abnormal, an operation signal is output to at least one of the brake device 106 for the hoisting machine and the emergency stop device 33. , The number of objects to be detected for elevator abnormalities increases, and it is possible to detect not only abnormalities in the speed of car 3 but also abnormalities in the status of car entrance 26 and elevator abnormalities by monitoring device 108. Can be detected earlier and more reliably. Therefore, it is possible to further reduce the time required from the occurrence of an elevator abnormality to the generation of the braking force on the car 3.

In the above example, only the state of the car doorway 26 is detected by the door sensor 140, but the respective states of the car doorway 26 and the landing doorway 141 are detected by the door sensor 140. You may make it detect. In this case, the displacement of each landing door 142 to the door closed position is detected by the door sensor 140 together with the displacement of each car door 28 to the door closed position. In this way, an abnormality in the elevator is detected even when, for example, the car door 28 is displaced due to a failure of an engagement device for engaging the car door 28 and the landing door 142 with each other. can do. Embodiment 16

FIG. 29 is a configuration diagram schematically showing an elevator apparatus according to Embodiment 16 of the present invention. FIG. 30 is a configuration diagram showing an upper portion of the hoistway 1 of FIG. In the figure, a power supply cable 150 is electrically connected to the hoist 101. Drive power is supplied to the hoisting machine 101 through the power supply cable 150 under the control of the control panel 102.

The power supply cable 150 includes a current sensor 1 serving as a driving device detecting unit that detects a state of the hoisting machine 101 by measuring a current flowing through the power supply cable 150. 5 1 is installed. The current sensor 151 outputs a current detection signal (drive device state detection signal) corresponding to the current value of the power supply cable 150 to the output unit 114. Note that the current sensor 15 1 is arranged above the hoistway 1. Further, as the current sensor 151, a current transformer (CT) for measuring an induced current generated according to the magnitude of the current flowing through the power supply cable 150, or the like can be given.

A car position sensor 1109, a car speed sensor 1.10, and a current sensor 151 are electrically connected to the output section 114. The detecting means 112 has a car position sensor 109, a car speed sensor 110 and a current sensor 151.

The storage unit 113 stores the same car speed abnormality determination criterion as in the embodiment 11 as shown in FIG. 19 and a drive criterion for determining whether there is an abnormality in the state of the hoisting machine 101. The moving device abnormal judgment criterion is stored.

The drive device abnormality determination criterion has three stages of detection patterns. That is, the drive device abnormality determination criteria include a normal level which is a current value flowing through the power supply cable 150 during normal operation, a first abnormal level which is larger than the normal level, and a first abnormal level which is larger than the first abnormal level. The second abnormal level is set to a large value. The output unit 114 calculates the position of the car 3 based on the input of the position detection signal, and the speed of the car 3 and the winding machine 10 based on the respective input of the speed detection signal and the current detection signal. The state of 1 is calculated as each of multiple (two in this example) abnormality judgment factors.

The output unit 114 determines whether the drive unit is abnormal when the speed of the car 3 exceeds the first abnormal speed detection pattern 1 16 (Fig. 19) or the magnitude of the current flowing through the power supply cable 150. When the value exceeds the value of the first abnormal level in the reference, an operation signal (trigger signal) is output to the brake device 104 for the hoisting machine. In addition, the output unit 114 detects when the speed of the car 3 exceeds the second abnormal speed detection pattern 1 17 (FIG. 19) or when the magnitude of the current flowing through the power supply cable 150 is When the value of the second abnormal level in the criterion is exceeded, a brake device 1

0 4 and emergency stop device 3 The operation signal is output to 3. That is, the output unit 114 responds to the degree of abnormality of the speed of the car 3 and the state of the hoist 101, respectively. Then, the braking means for outputting the operation signal is determined.

Other configurations are the same as those of the eleventh embodiment.

Next, the operation will be described. When the position detection signal from the car position sensor 109, the speed detection signal from the car speed sensor 110, and the current detection signal from the current sensor 151 are input to the output section 114, the output In the unit 114, the position of the car 3, the speed of the car 3, and the magnitude of the current in the power supply cable 150 are calculated based on the input of each detection signal. After that, the output unit 114 outputs the speed of the car 3 calculated based on the input of the detection signal and the car speed abnormality judgment criterion and the drive device abnormality judgment criterion respectively obtained from the storage unit 113. The magnitude of the current in the power supply cable 150 is compared with the magnitude of the current in the power supply cable 150, and the presence or absence of abnormality in each of the speed of the car 3 and the state of the winder 101 is detected.

During normal operation, the speed of the car 3 is almost the same as the normal speed detection pattern 1 15 (Fig. 19), and the current flowing through the power supply cable 150 is at the normal level. The output unit 114 detects that there is no abnormality in the speed of the car 3 and the state of the winding machine 101, respectively, and normal operation of the elevator is continued. For example, if for some reason the speed of car 3 rises abnormally and exceeds the first abnormal speed detection pattern 1 16 (Fig. 19), the output section will indicate that the speed of car 3 is abnormal. Detected by 114, the operation signal is output from the output unit 114 to the hoisting machine brake device 106, and the stop signal is output to the control panel 102. As a result, the hoist 101 is stopped, the brake device 106 for the hoist is operated, and the rotation of the drive sheave 104 is braked.

Also, when the magnitude of the current flowing through the power supply cable 150 exceeds the first abnormal level in the drive device state abnormality determination criterion, the operation signal and the stop signal are transmitted to the hoisting machine brake device 106 and the control unit. The output is output from the output unit 114 to the panel 102, and the rotation of the drive sheave 104 is braked.

If the speed of the car 3 further increases after the operation of the hoisting machine brake device 106 and exceeds the second abnormal speed set value 1 17 (Fig. 19), the hoisting machine brake device 10 While maintaining the output of the operation signal to 6, the operation signal is output to the safety gear 33 from the output section 114. As a result, the emergency stop device 33 is operated, and the second embodiment differs from the second embodiment. Car 3 is braked by the same operation.

Also, if the magnitude of the current flowing through the power supply cable 150 after the operation of the hoisting machine brake device 106 exceeds the second abnormal level in the drive device abnormality abnormality criterion, the hoisting operation is also performed. While maintaining the output of the operation signal to the machine brake device 106, the operation signal is output from the output unit 114 to the safety device 33, and the safety device 33 is activated.

In such an elevator apparatus, the monitoring device 108 acquires the speed of the car 3 and the state of the winding machine 101 based on information from the detecting means 112 for detecting the state of the elevator, and acquires the acquired information. When it is determined that there is an abnormality in any of the speed of the car 3 and the state of the hoist 101, at least one of the brake device 106 for the hoist and the emergency stop device 33 is required. Since an operation signal is output, the number of elevator abnormality detection targets increases, and the time required from the occurrence of an elevator abnormality to the generation of braking force on car 3 can be shortened. it can.

Note that, in the above example, the current hoist is configured to detect the state of the hoisting machine 101 by using the current sensor 151 that measures the magnitude of the current flowing through the power supply cable 150. The state of the hoist 101 may be detected using a temperature sensor that measures the temperature of the machine 101.

In Embodiments 11 to 16 described above, the output unit 114 outputs the operation signal to the hoisting machine brake device 106 before outputting the operation signal to the emergency stop device 33. Although it is undulating, it is mounted separately from the safety device 3 on the car 3, a car brake that brakes the car 3 by sandwiching the car guide rail 2, mounted on the counterweight 107, and a counterweight A counterweight that guides 107 A counterweight brake that sandwiches the guide rail, or a counterweight brake that brakes 107, or a main rope that is provided in the hoistway 1 and restrains the main rope 4 An output signal may be output to the output unit 1 14 to the rope brake that brakes 4.

In Embodiments 1 to 16, the electric cable is used as the transmission means for supplying power from the output unit to the safety gear. However, the transmitter provided in the output unit and the safety gear mechanism are provided. Alternatively, a wireless communication device having a receiver provided in the device may be used. Further, an optical fiber cable for transmitting an optical signal may be used. In Embodiments 1 to 16 described above, the emergency stop device brakes against excessive speed (movement) of the car in the downward direction. However, the emergency stop device is turned upside down. It is also possible to attach a car to the car and brake it against overspeed (movement) in the upward direction. Embodiment 1 7.

Next, FIG. 31 is a configuration diagram showing an elevator apparatus according to Embodiment 17 of the present invention. In the figure, a pair of car suspension wheels 202 a and 202 b are provided below the car 201. Above the counterweight 203, a counterweight suspension wheel 204 is provided. The car 201 is guided up and down the hoistway by a car guide rail (not shown). The counterweight 203 is guided by a counterweight guide rail (not shown) and is moved up and down in the hoistway.

In the lower part of the hoistway, a drive device for raising and lowering the basket 201 and the counterweight 203

(Winding machine) 205 is installed. The driving device 205 includes a driving sheave 206 and a driving device main body 207 for rotating the driving sheep 206. The driving device main body 2007 includes a motor and a brake device.

The car 201 and the counterweight 203 are suspended in the hoistway in a 2: 1 roving manner by a plurality of main ropes 208 (only one is shown in the figure). At the upper part of the hoistway, rope end supports 219 a and 219 b are fixed. The main rope 208 is the car-side end connected to the rope end supports 219a and 219b.

(Catch side hitchend) 208a and counterweight side end (counterweight hitchend) 208b.

At the upper part in the hoistway, a car-side turnover wheel 2009 and a counterweight-side turnover wheel 210 are provided.

In addition, the main ropes 208 are, in order from the car side end 208 a side, a car suspension car 202 b, a car back car 200, a drive sheep 206, a balancing It is wound around the weight return wheel 210 and the counterweight suspension wheel 204 and reaches the counterweight side end 208b.

A governor 2 1 1 is installed above the hoistway. Governor 2 1 1 is the car 2 It has a governor sheep 2 12 rotated at a speed corresponding to the traveling speed of 01. A governor rope 2 13 is wound around the governor sheave 2 12. Both ends of the governor rope 2 13 are connected to the car 201. At the lower end of the governor rope 2 13, a governor rope tensioning wheel 2 14 for applying tension to the governor rope 2 13 is provided.

The speed governor 2 i 1 is provided with a speed sensor 2 15 for generating a signal for detecting the traveling speed of the car 201. As the speed sensor 215, for example, an encoder is used.

The operation of the driving device 205 is controlled by the elevator controller 216. The elevator controller 216 determines the position and speed of the car 201 based on the signal from the speed sensor 215, creates a traveling pattern of the car 201, and controls the driving device 205 Control.

In addition, the elevator control unit 216 compares the overspeed pattern shown in FIG. 19 with the car speed, and when the car speed reaches the set overspeed, stops the car 201 suddenly. Specifically, when the car speed reaches the first set overspeed (first abnormal level), the power supply to the drive device 205 is cut off, and the drive sheave 206 is driven by the brake device of the drive device 205. Brakes. When the car speed reaches the second set overspeed (second abnormal level), the car 201 is directly braked by an emergency stop device (not shown) mounted on the car 201.

Examples of the emergency stop device include the emergency stop devices (linear emergency stop) 5, 33, 77, and 78 described in Embodiments 1 to 16.

Further, a mechanical emergency stop device conventionally used may be used as the emergency stop device. In this case, an actuator unit that grips the governor rope 2 13 by inputting an operation signal from the elevator control unit 2 16 may be provided at or near the governor 2 11.

At an upper part in the hoistway, a car vibration detector 217 that generates a signal for detecting vibration of the car side end portion 208 a is provided. The car vibration detector 2 17 receives a vibration and generates a voltage signal corresponding to the vibration. Car vibration detector 2 1

The signal from 7 is input to a mischief detection unit (mischief determination processing unit) 218. The tamper detection unit 218 detects the sway of the car due to the tamper based on the signal from the car vibration detector 217 and sends a tamper detection signal to the elevator control unit 216. In addition, the mischief detection section 218 stores a reference value and a judgment program for judging whether or not the car shake is caused by mischief, and executes a calculation processing of the judgment program. Processing unit (CPU), RAM, input / output unit, etc.

When the mischief detection signal is input, the elevator control unit ₂ ₁₆ moves the car 201 to the nearest floor and stops it.

FIG. 32 is an enlarged front view showing the vicinity of the car vibration detector 2 17 of FIG. 31. FIG. 33 is a side view showing the vicinity of the car vibration detector 2 17 of FIG. In the figure, a shackle opening 2 221 is connected to each car side end 208 a. Each shackle rod '221 passes through the rope end support 219a.

An upper spring receiver 222 is attached to the upper end of each shirtcle rod 222. A spring (flexible body) 223 is interposed between each upper spring receiver 222 and the rope end support 219a.

In addition, an attachment member 224 is attached to the upper end of each shackle socket 221. At an upper end of one of the mounting members 224, a car vibration detector 217 is mounted.

Next, the operation will be described. When the car 201 shakes due to mischief by a passenger or the like, the car shake is transmitted to the car vibration detector 2 17 via the main rope 2 13. The car vibration detector 2 17 generates a voltage signal according to the vertical vibration. The voltage signal generated by the car vibration detector 217 is sent to the tamper detector 218.

The tamper detection unit 218 compares the input voltage signal with a preset reference value, and determines whether the degree of car swing is at a level that affects the overspeed detection by the elevator control unit 216. Is determined.

If the degree of car shake is negligible, the car 201 is driven as it is. If the degree of car shake has reached a preset level, a tampering detection signal is input from the tampering detection section 218 to the elevator control section 216. The car 201 is moved to the nearest floor and stopped. At this time, it is also possible to issue an alarm or announcement in the car 201.

Further, when the mischief detection signal is input, an alarm or an announcement is issued in the car 201, and the car 201 may be stopped at the nearest floor only when the car continues to shake. That is, the control when the mischief detection signal is output can be variously changed.

In such an elevator system, the vibration generated in the car 201 is measured by the car vibration detector 217 through the main rope 208 corresponding to the position of the car 201 for a length. . In addition, the vibration of the car 201 is transmitted to the governor 211 via the governor rope 21 for a length corresponding to the position of the car 201. Therefore, the vibration detected by the car vibration detector 2 17 is substantially equal to the vibration affecting the speed sensor 2 15 provided in the governor 2 11.

In this manner, the vibration of the car-side end 208a of the main rope 208 is detected by the car vibration detector 217, and the degree of car sway is determined by the detector 218 based on the detection signal. This makes it possible to more reliably prevent an overspeed from being erroneously detected due to a car shake caused by mischief. In addition, it is possible to prevent erroneous detection of car shaking due to mischief.

In Embodiment 17, the elevator apparatus that detects the overspeed based on the signal from the speed sensor 215 and brakes the car 201 was described. However, a conventional mechanical governor and a mechanical governor were used. The present invention can be applied to a combination of an emergency stop device and an elevator device, and can accurately detect a car shake caused by mischief. Embodiment 18

Next, FIG. 34 is a front view showing a main part of an elevator apparatus according to Embodiment 18 of the present invention. In this example, a weighing device 225 for detecting the accumulated weight of the car 201 is provided with a car vibration detector for detecting a sway due to mischief. The weighing device 2 25 includes a detection pulley 2 26 rotatably supported above the hoistway, a detection wire 2 27 wound around the detection pulley 2 26, and a detection pulley 2 2 6. An angle sensor 228 for generating a signal for detecting a rotation angle. The angle sensor 228 also serves as a car vibration detector that generates a signal for detecting a car shake.

A first end of the detection wire 227 is connected to an upper end of one of the mounting members 224. The second end of the detection wire 227 is connected to the rope end support portion 219a via a spring 229. The spring 225 applies a tension to the detection wire 227. The angle sensor 228 is mounted on the detection pulley 226. Other configurations are the same as in Embodiment 17.

Next, the operation will be described. The springs 222 expand and contract according to the load weight in the car 201. The attachment member 224 is vertically displaced in accordance with the expansion and contraction of the spring 223. Since the first end of the detection wire 222 is connected to the mounting member 222, when the mounting member 222 is displaced, the detection pulley 222 rotates by an angle corresponding to the amount of displacement. Is done. That is, the rotation angle of the detection pulleys 226 corresponds to the load weight in the car 201. Therefore, by processing the output signal from the angle sensor 228, the loaded weight in the car 201 can be measured.

Originally, the weight change of the car 201 is a static change, and therefore, a circuit with a long sampling cycle is used as a processing circuit for the output signal from the angle sensor 228. On the other hand, the frequency of car shake caused by mischief is about 1 to 5 Hz, and a processing circuit with a short sampling cycle is required to detect such shake. Therefore, in the eighteenth embodiment, a processing circuit for detecting a car swing is provided separately from the processing circuit for measuring the loaded weight.

Based on the detection result of the car shake detection processing circuit, the mischief detecting section 218 determines whether the car shake is caused by mischief. Therefore, it is possible to more reliably prevent an overspeed from being erroneously detected due to a car shake caused by mischief, and prevent a car shake caused by mischief from being erroneously detected.

In addition, since the existing angle sensor 228 can be used as a vibration detector for detecting a car shake, an increase in cost can be suppressed. Embodiment 19 Next, FIG. 35 is a configuration diagram showing an elevator apparatus according to Embodiment 19 of the present invention. In the figure, the elevator control unit controls the operation of the driving device 205 and the like, and the driving device 205 and the emergency stop device stop the car 201 when the elevator is abnormal. It has a safety monitoring section 2 32.

The tampering detection signal from the tampering detection section 2 18 is input to a safety monitoring section 2 32 independent of the operation control section 2 31. When the tampering detection signal is input to the safety monitoring section 232, the safety switch 232a of the safety monitoring section 232 is turned off, and the power supply to the driving device 205 is cut off. As a result, the driving of the motor of the driving device 205 is stopped, the driving sheave 206 is braked by the brake device, and the car 201 is emergency stopped. Other configurations are the same as those of the seventeenth embodiment.

According to such a configuration, even when the operation control unit 231 runs out of control, it is possible to more reliably prevent an overspeed from being erroneously detected due to a sway of the car due to mischief. This can prevent erroneous detection of car shaking due to

In Embodiment 19, the mischief detection unit 2 18 can be a part of the safety monitoring unit 2 32. Embodiment 20.

Next, FIG. 36 is a configuration diagram showing an elevator apparatus according to Embodiment 20 of the present invention. In the figure, the tampering detection signal from the tampering detection unit 218 is selectively input to one of the operation control unit 231 and the safety monitoring unit 232 according to the detected level of the car swing. You.

For example, if the car swing level is lower than a preset level, a mischief detection signal is input to the operation control section 231, and the car 201 is moved to the nearest floor and stopped. If the level of the car sway is equal to or higher than the preset level, a tamper detection signal is input to the safety monitoring section 232, and the car 201 is emergency stopped. As described above, it is also possible to execute different control after the detection of the car sway according to the level of the car sway. Embodiment 21.

Next, FIG. 37 is a configuration diagram showing an elevator apparatus according to Embodiment 21 of the present invention. In the figure, a drive device 205 and a deflector wheel 233 are arranged above the hoistway. A main rope 208 is wound around the drive sheave 206 and the deflector wheel 2 33.

The car side end 208 of the main rope 208 is connected to the upper part of the car 201, the counterweight side end 208b of the main rope 208 is the counterweight 2 0 Connected to the top of 3. That is, the car 201 and the counterweight 203 are suspended in a 1: 1 roving manner by the main rope 208.

The car 201 is equipped with a car vibration detector 234 that generates a signal for detecting the vibration of the car 201. The governor 2 11 1 is equipped with a governor vibration detector 2 35 that generates a signal for detecting the vibration of the governor 2 11. Signals from the car vibration detector 234 and the governor vibration detector 235 are input to the tamper detector 218. Other configurations are the same as those of the seventeenth embodiment.

FIG. 38 is a flowchart showing the operation of the mischief detection unit 218 of FIG. During normal operation of the elevator, the tamper detector 2 18 monitors whether or not the governor 211 has vibrated based on the signal from the governor vibration detector 235 (Step S). 1). If the vibration of the governor 2 1 1 is not detected, the normal operation is continued as it is;

When the vibration of the governor 211 is detected, it is checked whether the degree of the vibration is equal to or more than the first reference value (step S2). The first reference value is set lower than the vibration level at which overspeed is erroneously detected.

If the vibration of the governor 2 11 is equal to or greater than the first reference value, a tampering detection signal is output to the elevator control unit 2 16 (step S 3).

If the vibration of the governor 211 is less than the first reference value, then it is checked whether the degree of vibration of the governor 211 is greater than or equal to the second reference value (step S4). The second reference value is, of course, set lower than the first reference value. If the degree of vibration is less than the second reference value, normal operation is continued.

If the vibration of the governor 2 1 1 is greater than or equal to the second reference value and less than the first reference value, Based on the signal from the output device 234, it is confirmed whether the car 201 has vibrated (step S5). If the torsion of the car 201 is not detected, the normal operation is continued.

When the vibration of the car 201 is detected, it is determined that the vibration is likely to be caused by the mischief of the passenger, and a mischief detection signal is output (step S3). As a method of controlling the elevator after the mischief detection signal is output, for example, any one of the embodiments 17, 19, and 20 can be implemented. Specifically, for example, when a mischief detection signal is output, a control method of stopping the car 201 at the nearest floor can be applied. If the vibration of the governor 211 is equal to or greater than the first reference value, the car 201 is emergency stopped, and the vibration of the governor 211 is less than the first reference value. If the value is equal to or more than the value and the vibration of the basket 201 is detected, a control method for stopping the basket 201 to the nearest floor can be applied.

In such an elevator device, the vibration of the governor 211 is detected by the governor vibration detector 235, and the vibration of the car 201 is detected by the car vibration detector 234. The vibration of the governor 211 can be detected earlier, and it can be more accurately determined whether or not the vibration of the governor 211 is caused by the swing of the car 201. Therefore, it is possible to more reliably prevent an overspeed from being erroneously detected due to a car due to mischief, and to prevent a car shake due to mischief from being erroneously detected.

The car vibration detector can be placed anywhere as long as it can detect the swing of the car. For example, as shown in Embodiments 17 to 20, in the case of a 2: 1 roving type elevator apparatus, the vibration of the car is indirectly detected by detecting the vibration at the car side end of the main rope. May be detected.

When the car vibration detector is mounted on the car, the car vibration detector may be provided in either the car frame or the car room. However, by providing the car vibration detector directly in the car room, the car vibration detector can be used for mischief of passengers in the car room. Can be detected more reliably. In addition, when a car vibration detector is installed in a car room, it is possible to increase the detection sensitivity of the car shake by installing the car vibration detector at the top of the car room rather than at the bottom of the car room fixed to the car frame. it can. Embodiment 22.

Next, FIG. 39 is a configuration diagram showing an elevator apparatus according to Embodiment 22 of the present invention. In this example, the governor rope 2 13 is connected to the car 201 via the damping device 2 36. FIG. 40 is an enlarged side view of the vibration damping device 236 of FIG.

The signal from the car vibration detector 217 is input to the tampering detection unit 218 via the DZA converter 237 and the filter 238. The filter 238 detects car vibration due to the difference between the vibration transmission characteristics from the car 201 to the governor 211 and the vibration transmission characteristics from the car 201 to the car vibration detector 217. Correct the detection error of the detector 2 17.

That is, the vibration detected by the car vibration detector 217 by passing through the filter 238 is approximated to the vibration of the governor 211. In the filter 238, the weight of the cab is Ml, the weight of the car frame supporting the cab M2, the rigidity of the vibration isolating rubber provided between the cab and the car frame K1, and the main rope 20 The detection signal is corrected using parameters such as the stiffness Kr of 8, the spring stiffness Kc of the vibration damping device 236, and the stiffness Kg of the governor rope 2 13.

FIG. 41 is an explanatory diagram showing an example of signal correction by the filter 238 in FIG. For example, a signal shown in (b) can be obtained by performing a correction in consideration of the transfer characteristic on the detection signal shown in (a).

As a result, it is possible to more reliably prevent an overspeed from being erroneously detected due to a car shake caused by mischief, and prevent a car shake caused by mischief from being erroneously detected.

The correction by the filter 238 can also be applied to an elevator device that does not use the vibration damping device 236.

Also, in the mischief determination algorithm of Embodiment 21, the determination accuracy is improved by applying a correction by a filter 238 to a signal from the governor vibration detector 235 and the cage vibration detector 234. Can be improved.

In addition, it is possible to apply multiple filters to one detection signal. Noh. FIG. 42 is an explanatory diagram showing an example in which two types of correction are applied to a detection signal from one vibration detector. As shown in the figure, by applying a correction based on the transmission characteristic A from the detection position to the governor, the signal after the correction can be used for judging the fluctuation of the governor. Further, by applying a correction based on the transfer characteristic B from the detection position to the car, the corrected signal can be used for determining the swing of the car. Therefore, the swing of the car and the swing of the governor can be detected by using one vibration detector, and the control method as described in Embodiment 21 can be implemented.

Furthermore, in order to apply the filter for the transfer characteristics to various types of elevators, a driving operation for identifying the transfer characteristics may be performed immediately after the elevator is installed.

Further, the parameters used for the filter are not limited to the above example, and may include, for example, a rising stroke and a capacity.

Claims

The scope of the claims

1. A car with a hanging car is installed, and the car can be raised and lowered in the hoistway.

A counterweight suspending vehicle is mounted, a counterweight that is raised and lowered in the hoistway, a driving device that has a drive sheave, and a driving device that raises and lowers the car and the counterweight, connected to an upper part of the hoistway A main rope having a car side end and a counterweight side end, the car hanging wheel, the counterweight hanging wheel, and the main rope wound around the drive sheep;

A governor sheave rotated at a speed corresponding to the traveling speed of the car, a governor provided at an upper portion of the hoistway;

A governor rope wound around the governor sheave and connected to the car;

An elevator control unit that detects the traveling speed of the car from the rotation of the governor sheave, and controls the operation of the car according to the detection result;

A car vibration detector provided at an upper part of the hoistway for detecting vibration of the car side end; and

Tamper detection unit that detects car shake due to tampering based on signals from the above-mentioned car vibration detector

An elevator device comprising:

2. The elevator apparatus according to claim 1, wherein the car is moved to the nearest floor and stopped by the elevator control unit when the tamper is detected by the tamper detection unit.

3. The elevator control unit has an operation control unit that controls the operation of the drive device, and a safety monitoring unit that is independent of the operation control unit.

2. The elevator apparatus according to claim 1, wherein the car is emergency-stopped by the safety monitoring section when the tamper detection section detects a car shake due to the tamper.

4. The elevator control unit includes an operation control unit that controls the operation of the drive device, and a safety monitoring unit that is independent of the operation control unit.

When the tampering detection unit detects a car shake due to tampering, a tampering detection signal is selectively input to one of the operation control unit and the safety monitoring unit according to the detected level of the car shaking. The elevator device according to claim 1.

5. The elevator apparatus according to claim 4, wherein when the level of the car shake is equal to or higher than a preset level, a mischief detection signal is input to the safety monitoring unit, and the car is emergency stopped.

6. A weighing device for detecting the loaded weight of the car is connected to the car side end,

The weighing device has a detection pulley that is rotated according to the loaded weight of the car, and an angle sensor that detects a rotation angle of the detection pulley.

2. The erelevator device according to claim 1, wherein the angle sensor also serves as the car vibration detector.

7. A drive having a drive sheep,

A main rope wrapped around the drive sheep,

A car suspended in the hoistway by the main rope and lifted by the driving device;

A governor having a governor sheave rotated at a speed corresponding to the traveling speed of the car, detecting a traveling speed of the car from rotation of the governor sheave, and operating the car according to a detection result. Elevator control unit to control,

Governor vibration detector for detecting the vibration of the governor,

A car vibration detector for detecting the vibration of the car, and

Mischief detection unit that detects car shaking due to mischief based on signals from the governor vibration detector and the car vibration detector

An elevator device comprising:

8. If the vibration of the governor is equal to or higher than the preset first reference value, the car is emergency-stopped, and the vibration of the governor is less than the first reference value and is equal to or greater than the second reference value. 8. The elevator apparatus according to claim 7, wherein the car is stopped on the nearest floor when vibration of the car is detected.