WO2004083091A1

WO2004083091A1 - Elevator device, and emergency stop device for elevator

Info

Publication number: WO2004083091A1
Application number: PCT/JP2004/003557
Authority: WO
Inventors: Ken-Ichi Okamoto; Takuo Kugiya; Hiroshi Kigawa; Hideaki Kodera; Akinari Kajita; Yasushi Chadani
Original assignee: Mitsubishi Denki Kabushiki Kaisha
Priority date: 2003-03-18
Filing date: 2004-03-17
Publication date: 2004-09-30
Also published as: EP2522614A1; KR20050072781A; JP4607011B2; EP1604935B1; CN101229893B; JPWO2004083091A1; CN101229892B; WO2004083090A1; EP1604935A1; CN101229893A; KR100752886B1; EP1604935A4; EP2522615A1; CN1701033A; CN101229892A; CN1701033B

Abstract

In an elevator device, an output portion is electrically connected to a cage-speed sensor for detecting the speed of a cage. An emergency stop device capable of braking the cage is mounted on the cage. The output portion outputs an activation signal to the emergency stop device when the speed of the cage detected by the cage-speed detection sensor exceeds a set value. The emergency stop device is activated by input of the activation signal, braking the cage.

Description

Description Elevator overnight device and Elevator emergency stop device

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an elevator device that raises and lowers a car in a hoistway, and an emergency stop device that rotates a car that moves up and down at an abnormal speed forcibly.

In a conventional elevator system, a governor is sometimes used to operate an emergency stop device mounted on a car. Japanese Unexamined Patent Publication No. 2000-80840 discloses a speed governor for detecting an abnormality in the elevating speed of a car, and an emergency device for preventing a car from falling by pressing a wedge against a car guide rail for guiding the car. A stop device is shown. A governor rope is wrapped around the governor sheave, which moves in synchronism with the elevation of the car. The car is equipped with a safety link connected to the governor rope and linked to the wedge of the safety gear. In the governor, when an abnormal speed of the car is detected, the governor rope is restrained. The governor rope restraint activates the safety link and pushes the wedge against the car guide rail. The car is prevented from falling by the braking force of this pressing.

However, in such an elevator system, the safety gear is activated when the speed of the car has already risen significantly. It will be connected.

Also, the governor rope restraint and the operation of the safety link are interposed between the time when the cage speed abnormality is detected by the speed governor and the time when the wedge braking force is generated. Due to the delay of the restraining operation, the expansion and contraction of the governor rope, and the delay of the operation of the safety link, it takes time from the detection of the abnormal car speed to the generation of the braking force. Therefore, when braking force is generated, the speed of the car is further increased, and the impact on the car is further increased. In addition, the braking distance before the car stops increases. In addition, the safety link may vibrate due to the swing of the car and may malfunction.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-described problems, and can reduce the time required from the occurrence of an abnormality in an erepeater device to the generation of a braking force. An object of the present invention is to obtain an elevator device that can be prevented and an emergency stop device for the elevator device.

An elevator apparatus according to the present invention includes: a car speed detecting means for detecting a speed of a car; an output unit for outputting an operation signal when a speed of the car detected by the car speed detecting means becomes a set overspeed; Braking means which has a braking member which can be brought into contact with and separated from the car guide rail for guiding the ascending and descending of the car, and which is mounted on the car and which presses the braking member against the car guide rail by input of an operation signal to brake the car; It is provided with transmission means for transmitting a signal from the output unit to the control means. BRIEF DESCRIPTION OF THE FIGURES

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 the safety gear of FIG.

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 apparatus according to Embodiment 2 of the present invention.

FIG. 5 is a front view showing the safety device of FIG.

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

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

FIG. 8 is a configuration diagram schematically showing an elevator apparatus according to Embodiment 3 of the present invention.

FIG. 9 is a configuration diagram schematically showing an elevator apparatus according to Embodiment 4 of the present invention.

FIG. 10 is a configuration diagram schematically showing an elevator apparatus according to Embodiment 5 of the present invention. It is.

FIG. 11 is a configuration diagram schematically showing an elevator apparatus according to Embodiment 6 of the present invention.

FIG. 12 is a block diagram showing another example of the elevator apparatus of FIG.

FIG. 13 is a configuration diagram schematically showing an elevator apparatus according to Embodiment 7 of the present invention.

FIG. 14 is a configuration diagram schematically showing an elevator apparatus according to Embodiment 8 of the present invention.

FIG. 15 is a front view showing another example of the driving section in FIG.

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.

FIG. 18 is a configuration diagram schematically showing an elevator apparatus according to Embodiment 11 of the present invention.

FIG. 19 is a graph showing the car speed abnormality determination criteria stored in the storage unit of FIG.

FIG. 20 is a graph showing the car acceleration abnormality determination criteria stored in the storage unit of FIG.

FIG. 21 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.

FIG. 23 is a configuration diagram showing the cleat device and each rope sensor of FIG. 22.

FIG. 24 is a configuration diagram showing a state where 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 the door sensor of FIG. 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 configuration diagram showing the upper portion of the hoistway of FIG. 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 rail 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 opening 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 as braking means are mounted so as to face the respective car guide rails 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 gear 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 tension sheave 9. The connecting part of the governor rope 10 with the car 3 is reciprocated with the car 3 in the vertical direction. As a result, the governor sheave 8 and the sheave 9 are rotated at a speed corresponding to the elevator speed of the car 3. The speed governor 6 operates the brake device of the hoisting machine when the elevator speed of the car 3 reaches a preset first overspeed. The governor 6 has a car

When the descent speed of 3 becomes the second overspeed (set overspeed) higher than the 1st overspeed, a switch unit 11 is provided, which is an output unit that outputs an operation signal to the emergency stop device 5 . The switch unit 11 is displaced according to the centrifugal force of the rotating governor sheave 8. The contact portion 16 is mechanically opened and closed by an overspeed lever. The contact section 16 is 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 by a power cable 14 and a connection cable 15, respectively. Connected.

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. Each of the safety gears 5 includes a pair of braking members wedges 19 that 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 that are fixed to the support member 18 and guide the wedges 19 displaced by the actuating portion 20 in a direction in contact with the car guide rail 2. Have. The pair of wedges 19, the pair of actuator portions 20 and the pair of guide portions 21 are symmetrically arranged on both sides of the car guide rail 2, respectively.

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. The wedge 19 is displaced along the inclined surface 22. The actuator section 20 includes a spring 23, which is an urging section for urging the wedge 19 to the upper guide section 21 side, and a guide section 2 against the urging of the spring 23 by an electromagnetic force caused by energization. And an electromagnetic magnet 24 for displacing the wedge 19 downward away from 1.

The spring 23 is connected between the support member 18 and the wedge 19. Electromagnetic magnet

24 is fixed to the support member 18. The emergency stop wiring 17 is connected to the electromagnetic magnet 24. Wedge 19 has a permanent magnet facing electromagnetic magnet 24 4 003557

25 is fixed. Power is supplied to the electromagnetic magnet 24 from the battery 12 (see FIG. 1) by closing the contact 16 (see FIG. 1). The emergency stop device 5 is actuated when the power to the electromagnetic magnet 24 is cut off by the opening of 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 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 is activated. 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 19 comes into contact with and is pressed against the car guide rail 2. The wedge 19 is further displaced upward by the contact with the car 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).

To release the braking of the car 3, the car 3 is raised while the electromagnetic magnet 24 is energized by closing the contacts 16. 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 basket detected by the governor 4 is used.

The abnormal speed 3 can be transmitted as an electrical operation signal from the switch unit 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. it can. 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. In addition, the safety device 5 As a result, malfunctions due to the swing of the car 3 and the like can be prevented. In addition, the safety device 5 includes an actuator portion 20 for displacing the wedge 19 to the upper guide portion 21 side and an inclination for guiding the wedge 19 to be displaced upward in a direction in contact with the car guide rail 2. Since the car 21 has the guide portion 21 including the surface 22, the pressing force of the wedge 19 against the car guide rail 2 can be reliably increased when the car 3 is descending.

The actuator part 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. Therefore, the wedge 19 can be displaced with a simple configuration. Embodiment 2

FIG. 4 is a configuration diagram schematically showing an electric device 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. The control panel 13 has an output section 32 electrically connected to the car speed sensor 31. The output unit 32 is connected to a battery 12 via a power supply 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 32 and each safety device 33 are electrically connected to each other by an emergency stop wiring 17. 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, an 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 part 35 connected to a lower portion of the wedge 34, and a wedge 3. Located above 4 and secured to basket 3 And a guide portion 36. The wedge 34 and the actuator part 35 are provided to be vertically movable with respect to the guide part 36. The wedge 34 is displaced upward with respect to the guide portion 36, that is, guided in a direction in which the wedge 34 comes into contact with the car guide rail 2 by the guide portion 36 with the displacement toward the guide portion 36.

The actuating part 35 is a cylindrical contact part 37 that can be moved toward and away from the car guide rail 2, and an operating mechanism 3 8 that displaces the contact part 37 in the direction that comes into contact with and separates from the car guide rail 2. And a support part 39 for supporting the contact part 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 operating mechanism 38. 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 to the guide portion 36 side.

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 wedge 34 is reciprocally displaceable in the horizontal direction with respect to the support portion 39.

The guide portion 36 has an inclined surface 44 and a contact surface 45 arranged so as to sandwich the car guide rail 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. Wedges 3 and 4

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 closer to each other, 03557 Car guide rail 2 is sandwiched between wedges 34 and contact surfaces 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 separated 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. That is, the first electromagnetic section 49 is displaced away from the second electromagnetic section 50 together with the movable section 40 by the input of the operation signal to the electromagnetic magnet 48.

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 located at the separation position, and the contact part 37 is separated from the car guide rail 2 by the bias 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, the operation signal is output from the output section 32 to each of the emergency stop devices 3.

Output to 3. By inputting the operation signal to the electromagnetic magnet 4 8, the first electromagnetic unit 4 The 9 and the second electromagnetic section 50 are repelled from 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 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 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 rail 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 section 49 and the second electromagnetic section 50 are attracted to each other, and the movable section 40 is displaced to the open position. Along with this, 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 removed.

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

Further, the actuating part 35 has a contact part 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 part 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 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. Can be. Furthermore, by making the contact part 3 7 lighter, The displacement speed of 7 can also be increased, and the time required for generating 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, By energizing the electromagnetic magnet 48 only when the movable part 40 is displaced, the movable part 40 can 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 apparatus, 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. When the car 3 descends while the car entrance 26 is open with the car entrance 26 open, an operation signal is output from the output unit 59 to the safety device 33, so that the car entrance 26 The lowering of the car 3 in the open state can be prevented.

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. 3557. 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 is provided with a cut detection lead 61 serving as a rope break detection 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 detecting lead 61 for detecting the disconnection of the main rope 4 are electrically connected to the output section 62. When the main rope 4 is cut, an operation signal is output from the output unit 62 to the safety device 33, so the abnormal speed is detected by detecting the speed of the car 3 and detecting the cut of the main rope 4. Thus, the descending car 3 can be more reliably braked. In the above example, a method of detecting whether the disconnection detection conductor 61 inserted in the main rope 4 is energized is used as the rope break detection means, for example, 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, the position of car 3 is detected within hoistway 1 to detect the position of car 3. A car position sensor 65 is provided as a means. 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 speed 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 system, the output unit 66 is activated 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. Since a signal is output, 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. Upper basket 7

The first car 7 and the lower car 7 2 are guided by the car guide rail 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.

A second hoisting machine (not shown) for raising and lowering (not shown) is installed. No.

The first main rope (not shown) is wound around the drive sheave of the first hoist, and the second main rope (not shown) is wound around the drive sheave of the second hoist. Upper basket 7 1 and the upper car counterweight are suspended by the first main rope, and the lower car 7 2 and the lower car counterweight 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. In the hoistway 1, an upper car position sensor 75 and a lower car position sensor 76, which are car position detecting means for detecting the position of the upper car 71 and the position of the lower car 72, are provided.

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 unit 79 is connected to an emergency stop device 77 for an upper car and an emergency stop device 78 for a lower car via an emergency stop wiring 17. 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. Upper basket 7 1 The running condition of 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 section 79 is provided, collision between the upper car 71 and the lower car 72 is predicted even if the speed of the upper car 71 and the lower car 72 does not reach the set overspeed. When this is done, the emergency stop device 77 for the upper car and the emergency stop device 78 for the lower car can be operated, and 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 2.Each actual movement can be easily detected with a simple configuration.o

In the above example, the output unit 79 is mounted in the control panel 13 but the upper car

7 1 and the lower car 7 2 and an output unit 79 may be mounted. In this case, Figure 1

As shown in Fig. 2, 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 composed of the output unit 79, mounted on the upper car 71. Each of the output sections 79 mounted on the lower car 72 is electrically connected to each of them. In the above example, the output unit 79 is used for the upper car safety device 77 and the lower car. An operation signal is output to both the emergency stop devices 7 and 8, but according to the information from the car operation detection means, the emergency stop device for the upper car 7 7 and the emergency stop device for the lower car 7 8 The operation signal may be output to only one of them. 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 judges whether there is any abnormality in the movement of the upper car 71 and the lower car 72. You. 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 unit 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, “upper car Detection information)) to predict the presence or absence of a collision with the lower car 72 of the upper car 71, and to output an activation signal to the upper car safety device 777 when a collision is predicted. I have. 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 is a lower car speed sensor 74, a lower car position sensor 76 and P2004 / 003557 Based on the information from the upper car position sensor 75 (hereinafter referred to as “detection information for the lower car” in this embodiment), the presence or absence of collision of the lower car 72 with the upper car 71 is predicted. When a collision is predicted, an operation signal is output to the emergency stop device 78 for the lower car. 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 designed to predict the collision of the lower car 7 2 with 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 device 77 and the lower car safety device 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, the operation signals are output from the upper car output section 81 to the upper car emergency stop device 77, and the lower car output section 82 to the lower car emergency stop device 78, respectively. . 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 a device, the same effect as that of the sixth embodiment is obtained, and the upper car speed sensor 73 is electrically connected only to the upper car output unit 81, and the lower car speed sensor 7 4 is electrically connected only to the lower car output unit 8 2, so that it is between the upper car speed sensor 7 3 and the lower car output unit 8 2, and the lower car speed sensor 7 4 and the upper car There is no need to provide electric wiring between the output unit 81 and the electric wiring installation work 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, the upper car 7 1 and the lower car 7 2 have the upper car 7 1 and the lower car 7

The car-to-car distance sensor 91, which is a car-to-car distance detecting means for detecting the distance between It is listed. 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, this embodiment mode). , The upper car 71 detects the presence or absence of a collision with the lower car 72, and when a collision is predicted, sends an operation signal to the upper car emergency stop device 77. Output.

The lower car output section 82 is provided with 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, this embodiment). In this case, the "lower car detection information" is used to predict the presence or absence of a collision with the upper car 71 of the lower car 72, and when a collision is predicted, an operation signal is sent to the lower car emergency stop device 7 8 Output. Other configurations are the same as in Embodiment 7.o

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 information from the car distance sensor 91. However, it is possible to further reliably predict the presence or absence of a collision between the upper car 71 and the lower car 72.

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 open / close detection signal is input to the output unit. The rope detection signal 61 may be applied to the output unit by applying the disconnection detection conductor 61 of the fourth embodiment.

In Embodiments 2 to 8 described above, the driving unit includes the first electromagnetic unit 49 and the first electromagnetic unit.

It is driven by using 50 electromagnetic repulsive force or electromagnetic attractive force. It may be designed to be driven by using eddy current generated in the repulsive plate of 3557 nature. 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 located above the wedge 34, the actuator part 156 connected to the lower part of the wedge 34, and the wedge 34, and is fixed to the car 3. Guide portion 36. The actuator section 1 56 can be moved up and down with the wedge 34 relative to the guide section 36.

The actuator part 156 is composed of a pair of contact parts 157 that can be separated from the cage guide rail 2 and a pair of link members 158 a connected respectively to the contact parts 157. , 1558b, and an operation mechanism 1 for displacing one link member 1558a with respect to the other link member 1558b in a direction in which each contact portion 157 comes into contact with or separates from the car guide rail 2. 59, a contact part 157, a link member 158a, 158b, and a support part 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 that rotatably connects the link members 158 a, 158 b at the crossed portions of the link members 158 a, 158 b. 1 6 1 is provided. Further, one link member 158a is provided rotatable about the connecting portion 161 with respect to the other link member 158b.

In each contact portion 157, the other ends of the link members 158a and 158b approach each other. By being displaced in the direction of TJP2004 / 003557, it is displaced in the direction in contact with the car guide rail 2. In addition, each contact portion 157 is displaced in a direction away from the car guide rail 2 by displacing the other end portions of the link members 158a and 158b in a direction away from each other.

The operation mechanism 159 is arranged between the other end portions of the link members 158a and 158b. The operating mechanism 159 is supported by the link members 158a and 158b. Further, the operating mechanism 159 has a rod-shaped movable portion 162 connected to one link member 158a, and a drive portion 163 fixed to the other link member 158b and displaces the movable portion 162 in the forward and backward directions. ing. The operating mechanism 159 is provided for each link member 1

Together with 58a and 158b, it is rotatable around the connecting member 161. The movable part 162 includes a movable core 164 housed in the driving part 163, and a movable core 1

64 and a connecting rod 165 for connecting the link member 158a to each other. Further, the movable portion 162 can be reciprocated between a contact position where each contact portion 157 contacts the car guide rail 2 and an open position where each contact portion 157 is separated from the car guide rail 2. I have.

The driving section 163 includes a pair of regulating sections 166 a, 1 for regulating the displacement of the movable iron core 164.

66b and a fixed core 166 surrounding the movable core 164 including a side wall 166c connecting the respective restricting portions 166a and 166b to each other, and housed in the fixed iron core 166, and are energized to one of the restricting portions 166a. A first coil 167 for displacing the movable core 164 in a contacting direction, a second coil 168 housed in the fixed core 166 and displacing the movable core 164 in a direction in contact with the other regulating portion 166 b by energization, An annular permanent magnet 169 is provided between the first coil 1 67 and the second coil 168.

One restricting portion 166a is arranged such that the movable iron core 164 is in contact when the movable portion 162 is at the separated position. Further, the other regulating portion 166b is arranged such that the movable iron core 164 is in contact when the movable portion 162 is in the contact position.

The first coil 167 and the second coil 168 are annular electromagnetic coils surrounding the movable part 162. In addition, the first coil 167 is composed of the permanent magnet 169 and one of the regulating portions 166a. , And the second coil 1668 is disposed between the permanent magnet 169 and the other regulating portion 166b.

When the movable iron core 16 4 is in contact with the regulating part 16 6 a, there is a magnetic resistance space between the movable iron core 16 4 and the other regulating part 16 6 b. Therefore, the amount of magnetic flux of the permanent magnet 169 becomes larger on the first coil 167 side than on the second coil 168 side, and the movable core 164 abuts one of the restricting parts 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 abutted.

The second coil 168 is configured to receive power as an operation signal from the output unit 32. In addition, the second coil 1668 is configured to generate a magnetic flux that opposes a force that holds the movable core 164 in contact with one of the restricting portions 166a by 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 located at the separated position, and the movable iron core 16 4 is in contact with one restricting part 16 66 a by the holding force of the permanent magnet 16 9. When the movable iron core 16 4 is in contact with the regulating section 16 6 a, the wedge 34 is spaced from the guide section 36 and opened from the cage guide rail 2. Separated.

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

By being output to 55, the second coil 1668 is energized. This allows

A magnetic flux is generated around the two coils 168, and the movable core 164 is displaced in a direction approaching the other regulating portion 166b, and is displaced from the separated position to the contact position. At this time, the contact portions 157 are displaced in directions approaching each other, and come into contact with the car guide rail 2. 03557 As a result, the wedge 34 and the actuator part 155 are braked.

After this, the guide part 36 continues to descend, approaching the wedge 34 and the akuchiyue part 155. Thus, 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.

Upon return, a return signal is transmitted from the output unit 32 to the first coil 167. 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 apparatus, the operating mechanism 159 is configured to displace the pair of contact portions 157 via the link members 158a and 158b, so The same effect as in the second embodiment 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 drawing, the safety device 1 75 is provided with a wedge 34, an actuator 1176 connected to the lower portion of the wedge 34, and a guide fixed above the wedge 34, which is disposed above the wedge 34. Part 36.

The actuator part 176 has an operation mechanism 159 having the same configuration as that of the ninth embodiment, and a link member Ί7 displaced by the displacement of the movable part 162 of the operation mechanism 159. have.

The operating mechanism 159 is fixed to the lower part of the car 3 such 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 section 1 79 is The first link portion 180 and the second link portion 179 are integrally rotatable about a fixed shaft 180.

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 that is slidably passed through the long 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 Ί 7 is at the separation position, and retreats 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

Due to the retreat of the drive unit 62 to the drive unit 16 3, it is located at the home position. At this time, the wedge 34 is kept apart from the guide portion 36 and is separated from the car guide rail.

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. Thereby, 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 effects as those of the second embodiment can be obtained. 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 for controlling the operation of the elevator are provided in the upper part of the hoistway 1. And are installed. The hoisting machine 101 includes a driving device main body 103 including a motor, and a driving sheave 104 around which a plurality of main ropes 4 are wound and rotated by the driving device main body 103. are doing. The hoisting machine 101 has a deflecting wheel 105 around which each main rope 4 is wound, and a winding means as braking means for braking the rotation of the drive sheep 104 to decelerate the car 3. Upper machine brake device (brake device for deceleration) 106 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 108 includes a car position sensor 109 that is a car position detecting unit that detects the position of the car 3, and a car speed sensor 110 that is a car speed detecting unit that detects the speed of the car 3. Each of the car acceleration sensors 111, which is a car acceleration detecting unit for detecting the acceleration of the car 3, is electrically connected. 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, a light emitter and a light receiver provided in hoistway 1 and a reflector provided in car 3, and receives light from the light emitter. An optical displacement measuring device or the like that detects the position of the car 3 by measuring the time required for the light receiving device to receive light can be used.

The monitoring device 108 has a storage unit (memory) in which a plurality of types (two types in this example) of abnormality determination criteria (setting data) serving as criteria for determining the presence or absence of an abnormality in the elevator is stored in advance. Section) 1 1 3 and information of the detection means 1 1 2 and the storage section 1 1 3 And an output unit (arithmetic unit) 114 that detects the presence or absence of abnormalities in the elevator. 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. I have.

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 (1st abnormal level) 1 16 and the 2nd abnormal speed detection pattern (2nd abnormal level) 1 17 that is larger than the 1st 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 Each is set to be continuously smaller. 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 so that it is 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 1 9 and 1st abnormal acceleration detection pattern

2nd abnormal acceleration detection pattern set to a value larger than 1 1 9 (2nd abnormal level) 3557

1 2 0 is set corresponding to the position of car 3 in each case.

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 value 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.

In other words, the normal speed detection pattern 1 15, the first abnormal speed detection pattern 1 16, and the second abnormal speed detection pattern 1 17 are stored in the storage unit 113 as the car speed abnormality judgment criteria, The 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.

An emergency stop device 33, a control panel 102, a hoisting machine brake device 106, a detecting means 112, and a storage unit 113 are electrically connected to the output unit 114. I have. 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 calculates the speed of the car 3 and the acceleration of the car 3 based on the respective input of the speed detection signal and the acceleration detection signal. It is calculated as each of multiple (two in this example) abnormality judgment factors.

The output unit 114 outputs the hoist when the speed of the car 3 exceeds the first abnormal speed detection pattern 1 16 or when the acceleration of the car 3 exceeds the first abnormal acceleration detection pattern 1 19. It outputs an operation signal (trigger signal) to the brake device 104. The output unit 114 outputs a stop signal for stopping the driving of the hoisting machine 101 simultaneously with the output of the operation signal to the hoisting machine brake device 104.

Output to 2. Further, the output unit 114 outputs a signal when the speed of the car 3 exceeds the second abnormal speed detection pattern 117, or when the acceleration of the car 3 exceeds the second abnormal acceleration detection pattern 120. Upper machine brake device 104 and non An operation signal is output to the permanent stop device 3 3. 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 acceleration 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. Thereafter, the output unit 114 outputs the car speed abnormality judgment criterion and the car acceleration abnormality judgment criterion obtained from the storage unit 113 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 completely 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. An operation signal is output from the output unit 114 to the brake device 106 for the hoisting machine, and a stop signal is output to the control panel 102 from the output unit 114. As a result, the hoist 101 is stopped, and at the same time, the hoist brake 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 1◦6 and the control panel 102. The output of each of the output units 114 is braked, 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 safety device 3 3 is operated, and the same operation as in the second embodiment is performed. Causes car 3 to brake.

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 system, 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 detecting the state of the elevator, When it is determined that one of the acquired speed of the car 3 and the acceleration of the car 3 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. As a result, it is possible to more quickly and more reliably detect the abnormality of the elevator by the monitoring device 108, and the braking force is applied to the car 3 after the occurrence of the abnormality of the elevator. The time it takes to do so can be shorter. In other words, the presence or absence of abnormalities in a plurality of types of abnormality judging elements such as the speed of the car 3 and the acceleration of the car 3 is determined separately by the monitoring device 108, so that the abnormality of the elevator by the monitoring device 108 Detection can be performed earlier and more reliably, and 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 speed of car 3 is changed to the first abnormal speed detection pattern 1

When the speed exceeds 16, an operation signal is output from the monitoring device 108 to the hoisting machine brake device 106, and monitoring is performed when the speed of the car 3 exceeds the second abnormal speed detection pattern 1 17. Operation signal from device 108 to brake device 106 for hoisting machine and emergency stop device 33 Is output, so that the car 3 can be braked stepwise according to the magnitude of the abnormal speed 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, a first abnormal acceleration detection pattern 1 19 having a value larger than the normal acceleration detection pattern 1 18, and a first abnormal acceleration detection pattern. The second abnormal acceleration detection pattern 1 20 which is set to a value larger than 1 19 is set, and the monitoring device 10 0 is set when the acceleration of the car 3 exceeds the first abnormal acceleration detection pattern 1 19. An operation signal is output from 8 to the brake device 106 for the hoisting machine, and when the acceleration of the car 3 exceeds the second abnormal speed detection pattern 12 0, the monitoring device 1 08 brake device 1 for the hoisting machine 1 Since an operation signal is output to the emergency stop device 33 and the emergency stop device 33, the car 3 can be braked stepwise according to the magnitude of the abnormal acceleration of the car 3. Usually, the acceleration of the car 3 becomes abnormal before the speed of the car 3 becomes abnormal, so 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, since the normal speed detection pattern 1 15, the first abnormal speed detection pattern 1 16 and the second abnormal speed detection pattern 1 17 are set corresponding to the position of car 3, the first abnormal speed detection pattern Each of the 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 elevator section of the car 3. Therefore, since the value of the normal speed detection pattern 1 15 is particularly small in the acceleration / deceleration section, each of the first abnormal speed detection pattern 1 16 and the second abnormal speed detection pattern 1 17 is set to a relatively small value. Therefore, 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. The abnormality determination criterion generator 128 is electrically connected to each of the hall call buttons 125 and the destination floor buttons 126. 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 determination criterion generation device 1 2 8 is a storage unit that stores a plurality of car speed abnormality determination criteria and a plurality of car acceleration abnormality determination criteria, which are abnormality determination criteria for all cases where the car 3 moves up and down between floors. (Memory unit) Select one from the storage unit 12 9 and the car speed abnormality judgment criterion and the car acceleration abnormality judgment criterion, and output the selected car speed abnormality criterion and car acceleration abnormality criterion. And a generation unit 130 for outputting to the unit 114.

In each car speed abnormality judgment criterion, the same three-stage detection pattern as the car speed abnormality judgment criterion shown in Fig. 19 of Embodiment 11 is set corresponding to the position of car 3 . In addition, each car acceleration abnormality judgment criterion includes the car shown in FIG. A three-step detection pattern similar to the acceleration abnormality determination standard is set corresponding to the position of car 3.

The generating unit 130 calculates the detected position of the car 3 based on the information from the car position sensor 109, and calculates the detected position of the car 3 based on the information from at least one of the hall call buttons 125 and the destination floor button 126. The destination floor of car 3 is calculated. 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 from the selected button to the generation unit 130, the generation unit 130 The detected position and 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 system, the abnormality determination criterion generator generates a car speed abnormality determination criterion and a car acceleration determination based on information from at least one of the hall call button 125 and the destination floor button 126. Since the reference is generated, it is possible to generate the car speed abnormality judgment criterion and the car acceleration abnormality judgment criterion corresponding to the destination floor, and even if a different destination floor is selected, the elevator is not lifted. The time required from the occurrence of an abnormality in the evening until the application of braking force can be shortened

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. Is selected one by one, but control panel 1 0

2 based on the normal speed pattern and normal acceleration pattern of car 3 generated by Alternatively, the abnormal speed detection pattern and the abnormal acceleration detection pattern may be directly generated. 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 rope cleat 131, and each of the main ropes 4 detects whether or not each main rope 4 is broken. A plurality of rope sensors 13 2 serving as outlets 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 rope sensor 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. Species (two in this example) are calculated as anomaly judgment factors.

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 1 1 4 outputs the speed of the car 3 as the second abnormal speed detection pattern 1 1 7 (Fig. 1

When 9) is exceeded, or when all the main ropes 4 break, an operation signal is output to the hoisting brake device 104 and the emergency stop device 33. That is, the output unit 114 determines the braking means for outputting 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 raw 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. A measurement signal when the amount of elongation due to restoration of the elastic springs 133 reaches a predetermined amount is input to the output unit 114 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 breakage detection signal from each rope sensor 131 are input to the output part 114, the 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 outputs the car speed abnormality criterion and the rope abnormality criterion obtained from the storage unit 113 and the speed and main speed of the car 3 calculated based on the input of each detection signal. The number of broken ropes 4 is compared, and the speed of the car 3 and the presence or absence of abnormalities in the state of the main rope 4 are detected.

During normal operation, the speed of car 3 is almost the same 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 that state, and normal operation of the elevator is continued.

For example, for some reason, the speed of car 3 increases abnormally and the first abnormal speed detection If the turn 1 16 (Fig. 19) is exceeded, an abnormality in the speed of the car 3 is detected by the output unit 114, and the operation signal is sent to the hoist brake system 106. A stop signal is output from the output unit 114 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.

Also, when at least one main rope 4 is broken, the operation signal and the stop signal are output from the output unit 114 to the brake device 106 for the hoisting machine and the control panel 102, respectively, and are driven. The rotation of sheep 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 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 apparatus, the monitoring device 108 obtains the speed of the car 3 and the state of the main rope 4 based on information from the detecting means 112 detecting the state of the elevator. When it is determined that there is an abnormality in either the acquired speed of the car 3 or the state of the main rope 4, at least one of the brake device 106 for the hoisting machine and the emergency stop device 33 is activated. Since the signal is output, the number of objects to be detected for abnormality is increased, and not only abnormality in the speed of the car 3 but also abnormality in the state of the main rope 4 can be detected. Detection of abnormalities in the elevator can be performed earlier and more reliably. Therefore, it is possible to further shorten the time required from the occurrence of an abnormal condition at the time of occurrence of the power failure to the occurrence of the power control to 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. Although the present invention is applied to a type of elevator device, a main rope 4 having one end and the other end connected to a structure in the hoistway 1 is used for a car hoist and a counterweight hoist, respectively. The present invention may be applied to an evening elevating apparatus in which the car 3 and the counterweight 107 are wound around the hoistway 1. In this case, the rope sensor is installed on a rope cleat provided on a structure in the hoistway 1. Embodiment 14

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 serving as the rope breakage detecting 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, each 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 Embodiment 13.

In such an elevator system, the breakage of each main rope 4 is detected by interrupting the power supply to the conductor embedded in each main rope 4, so that each main rope 4 is accelerated and decelerated by the car 3. The presence or absence of breakage of each main rope 4 can be detected more reliably without being affected by the tension change of 4. 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 detecting 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. Also, the storage unit 113 has A car speed abnormality determination criterion similar to that of Embodiment 11 and an entrance / exit state abnormality determination criterion for determining whether or not there is an abnormality in the open / close state of the car entrance / exit 26 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 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. Six states are calculated as multiple (two in this example) 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. Also, when the speed of the car 3 exceeds the second abnormal speed detection pattern 1 17 (FIG. 19), the output unit 114 sends the brake device 104 for the hoisting machine and the safety device 33 to the emergency stop device 33. An operation signal is output.

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.

As the door sensor 140, a contact-type sensor that detects a door-closed state by being brought into contact with a fixed portion fixed to each car door 28, or a proximity sensor that detects a door-closed state in a non-contact manner is used. No. Further, a pair of landing doors 142 that open and close the landing entrances 141 are provided at the landing entrances 141. Each landing door 14 2 is engaged with each car door 28 by an engaging device (not shown) when the car 3 is landing on the landing floor, and is displaced together with each car door 28. You.

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

Next, the operation will be described. Position detection signal from car position sensor 109, speed detection signal from car speed sensor 110, and door closing detection from door sensor 140 When a signal is input to the output unit 114, the output unit 114 calculates the position of the car 3, the speed of the car 3, and the state of the car entrance 26 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 of each 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 entrance 26 is detected.

During normal operation, the speed of car 3 is almost the same value as the normal speed detection panel, and the car entrance 26 when car 3 is moving up and down is closed. In 14, it is detected that there is no abnormality in the speed of the car 3 and the state of the car entrance 26, and the normal operation of the erepeater 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 at 114 and the operation signal is output to the brake device 106 for the hoisting machine, and the stop signal is output to the control panel 102 from the output unit 114, respectively. As a result, the hoisting machine 101 is stopped, the hoisting machine brake device 106 is operated, and the rotation of the drive chip 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 unit 114, and the operation signal is output. And a stop signal are 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.

When 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 actuated, and the car 3 is braked by the same operation as in the second embodiment.

In such an elevator system, the monitoring device 108 obtains the speed of the car 3 and the status of the car entrance 26 based on information from the detecting means 112 detecting the state of the elevator. When it is determined that there is an abnormality in either the acquired speed of the car 3 or the state of the car entrance 26, the brake device 106 for the hoisting machine and the safety device 33 Since an operation signal is output to at least one of them, the number of abnormalities detected in the elevator is increased, and not only abnormalities in the speed of car 3 but also abnormalities in the state of car entrance 26 are detected. This makes it possible to more quickly and surely detect the abnormality of the elevator by the monitoring device 108 earlier. Therefore, it is possible to further shorten the time required from the occurrence of the abnormality in the elevator 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, for example, even when only the car door 28 is displaced due to a failure of an engagement device for engaging the car door 28 and the landing door 14 2 with each other, the elevator can be operated overnight. An abnormality can be detected. 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 is provided with a current sensor 151, which is a drive device detection unit that detects the state of the hoisting machine 101 by measuring the current flowing through the power supply cable 150. I have. 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. The current sensor 151 includes a current transformer (C T) for measuring an induced current generated according to the magnitude of the current flowing through the power supply cable 150.

A car position sensor 109, a car speed sensor 110, and a current sensor 151 are electrically connected to the output section 114, respectively. The detection means 1 1 2 It has a car position sensor 109, a car speed sensor 110, and a current sensor 151, and the storage unit 113 has the same car speed abnormality judgment as the embodiment 11 shown in FIG. A criterion and a drive device abnormality determination criterion that is a criterion for determining whether or not there is an abnormality in the state of the hoisting machine 101 are 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 abnormality level which is larger than the normal level, and a first abnormality level. The second abnormality level is set to a value larger than the second abnormality level. 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 hoist 10 based on the input of the speed detection signal and the current detection signal. The status of 1 is calculated as multiple types (two types in this example) of 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 exceeds the value of the second abnormal level in the criterion, an operation signal is output to the brake device 104 for the hoisting machine 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 of each of the states of the hoist 101.

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 unit 114, the output unit At 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 this, the output unit 1 1 4 obtains each from the storage unit 1 1 3 The car speed abnormality judgment criterion and the drive device state abnormality judgment criterion are compared with the speed of the car 3 and the magnitude of the current in the power supply cable 150 calculated based on the input of each detection signal. The speed of the car 3 and the abnormality of each of the states of the hoist 101 are 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. In the output unit 114, it is detected that there is no abnormality in the speed of the car 3 and the state of the hoist 101, respectively, and the normal operation of Erebet continues. For example, if for some reason the speed of car 3 rises abnormally and exceeds the 1st abnormal speed detection panel 1 16 (Fig. 19), it is detected that the speed of car 3 is abnormal. The output signal is detected by the power unit 114, the operation signal is output to the hoist brake device 106, and the stop signal is output to the control panel 102 from the output unit 114. As a result, the hoisting machine 101 is stopped, the hoisting machine brake device 106 is operated, and the rotation of the drive chip 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 of each of the output sections 114 to the board 102 causes the rotation of the drive sheave 104 to be braked.

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 actuation signal to the machine brake device 106, the actuation signal is output from the output unit 114 to the safety device 33, and the safety device 33 is actuated.

In such an elevator system, the monitoring device 108 detects the state of the elevator system. The speed of the car 3 and the state of the hoisting machine 101 are acquired based on the information from the detecting means 111, and the abnormality of either of the acquired speed of the car 3 and the state of the hoisting machine 101 is obtained. When it is determined that there is a fault, 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 increases, and the time required from the occurrence of an abnormality in the elevator to the time when the braking force is applied to the car 3 can be shortened.

In the above example, the state of the hoisting machine 101 is detected 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 by using a temperature sensor that measures the temperature of the upper 101.

In Embodiments 11 to 16, 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, the car brake that brakes the car 3 by sandwiching the car guide rail 2, mounted on the counterweight 107, A counterweight brake that brakes the counterweight 107 by sandwiching the counterweight guide rail that guides the weight 107, or a counterweight brake that is provided in the hoistway 1 and restrains the main rope 4 An output signal may be output to the output unit 114 to the rope brake that brakes the rope 4.

In Embodiments 1 to 16, the electric cable is used as a 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.

Claims

The scope of the claims

1. Car speed detecting means to detect car speed,

An output section for outputting an operation signal when the speed of the car detected by the car speed detecting means has reached a set overspeed;

It has a braking member that can be moved toward and away from the car guide rail that guides the car up and down.The braking member is mounted on the car, and when the operation signal is input, the braking member is pressed against the car guide rail and the car is moved. Braking means for braking, and

Transmission means for transmitting the operation signal from the output section to the braking means

Elevator overnight device equipped with.

2. The braking means comprises: a guide capable of guiding the braking member in a direction of coming into contact with and separating from the car guide rail; and displacing the braking member such that the braking member is guided by the guide. 2. The elevator apparatus according to claim 1, further comprising an actuator section.

3. The actuator section has an urging portion for urging the braking member toward the guide portion, and an electromagnetic magnet for displacing the braking member against the urging of the urging portion, 3. The elevator assembly according to claim 2, wherein the power supply to the electromagnetic magnet is interrupted by the input of the operation signal, and the braking member is displaced toward the guide portion.

4. The actuator section has a contact portion capable of coming in contact with and separating from the car guide rail, and an operating mechanism for displacing the contact portion in a direction coming into contact with and separating from the car guide rail. 3. The elevator apparatus according to claim 2, wherein the braking by the contact with the car guide rail causes the braking member to be displaced toward the guide portion moving with the car.

5. The operating mechanism is provided on the movable part connected to the contact part and the movable part, An urging portion, the direction of urging of which is changed so as to maintain the contact state and the separated state of the contact portion with the car guide rail in accordance with the displacement of the movable portion; and a drive portion for displacing the movable portion. 5. The elevator apparatus according to claim 4, comprising:

6. The car is equipped with a plurality of the braking means,

2. The elevator apparatus according to claim 1, wherein the output section outputs the operation signal so that each of the braking means operates simultaneously.

7. It is further provided with door open / close detecting means for detecting the open / closed state of the car entrance,

The output section outputs the operation signal to the braking means when the car moves up and down in a state where the car entrance is open, based on information from the car speed detecting means and the door opening / closing detecting means. The elevator apparatus according to claim 1, wherein

8. The main rope hanging from the car is further provided with a main rope breakage detecting means for detecting whether the main rope is cut or not,

2. The elevator apparatus according to claim 1, wherein the output section outputs the operation signal to the braking means when the main rope is cut, based on information from the main rope breakage detecting means.

9. A car position detecting means for detecting the position of the car is further provided.

The output unit has a memory unit in which a control pattern including the position and speed of the car during normal operation is stored,

The output unit outputs the operation signal to the braking unit when a deviation between the control pattern and the position and speed of the car based on information from the car position detecting unit and the car speed detecting unit exceeds a predetermined threshold. 2. The elevator device according to claim 1, wherein the device is configured to output the signal to a device.

10. Car operation detecting means for detecting actual movements of the first car and the second car ascending and descending in the same hoistway, and the first car based on information from the car operation detecting means. A monitoring section having a car and an output section for predicting the presence or absence of a collision of the second car and outputting an activation signal when a collision is predicted;

It has a braking member that can be attached to and detached from the car guide rail that guides the first car and the second car up and down, and is mounted on the first car and the second car, respectively, and the input of the operation signal Braking means for pressing the braking member against the car guide rail to brake at least one of the first car and the second car, and

Elevator overnight device equipped with.

1 1. The car operation detecting means detects car positions of the first car and the second car, and detects respective speeds of the first car and the second car. The elevator apparatus according to claim 10, further comprising a car speed detecting means.

1 2. The car operation detecting means detects the distance between the first car and the second car, and the car distance detecting means, and determines the speed of each of the first car and the second car. 11. The apparatus according to claim 10, further comprising a car speed detecting means for detecting.

1 3. Acquires multiple types of abnormality judgment elements based on information from the detection means for detecting the state of the elevator and activates when at least one of the above abnormality judgment elements is abnormal. A monitoring device that outputs a signal, and

Braking means which is operated by the input of the operation signal and brakes the elevation of the car

An elevator device, comprising:

14. The monitoring device according to claim 13, wherein the monitoring device includes a storage unit that stores a plurality of types of abnormality determination criteria for determining whether or not each of the abnormality determination elements has an abnormality. The described elevator device.

15. The braking means includes a deceleration braking device for decelerating the car, and an emergency stop device for preventing the car from falling,

Each of the abnormality judgment criteria includes a normal level which is a value of the abnormality judgment element during normal operation, a first abnormal level which is set to a value larger than the normal level, and a first abnormal level which is larger than the first abnormal level. The second abnormal level that is set to a large value is set,

The monitoring device outputs the operation signal to the braking device for deceleration when the value of the abnormality determination element based on the information from the detection means exceeds the first abnormality level, and outputs the information from the detection means. Wherein the operation signal is output to the deceleration braking device and the emergency stop device when the value of the abnormality determination element based on the value exceeds the second abnormality level. 4. The elevator device according to 4.

16. The detecting means has a car position detecting unit for detecting the position of the car, and each value of the normal level, the first abnormal level, and the second abnormal level stored in the storage unit. 16. The elevator apparatus according to claim 15, wherein the value is a value corresponding to the position of the car.

17. The detection means has a car speed detection unit for detecting the speed of the car, and the monitoring device acquires the speed of the car from the car speed detection unit as one of the abnormality determination factors. An elevator apparatus according to any one of claims 13 to 16, characterized in that:

18. The detection means has a door opening / closing detection unit for detecting an opening / closing state of a car doorway, and the monitoring device sets the door opening / closing state of the car doorway as one of the abnormality determination factors. Claim 17 wherein the abnormality of the elevator is detected when the car moves up and down in a state where the car entrance is open. The described elevator device.

1 9. The detection means has a car acceleration detection unit for detecting the acceleration of the car,

'' The monitoring device uses the acceleration of the car as one of The elevator apparatus according to any one of claims 13 to 18, wherein the elevator apparatus is obtained from an acceleration detection unit.

20. The detection means has a rope break detection unit that detects whether or not the main rope that suspends the car is broken.

13. The monitoring device according to claim 13, wherein the state of the main rope is obtained from the rope breakage detection unit as one of the abnormality determination elements. 13. 2. The elevator device according to claim 1.

21. The detecting means has a driving device detecting unit for detecting one of a driving current and a temperature of a driving device for raising and lowering the car,

13. The monitoring device according to claim 13, wherein the monitoring device acquires at least one of the driving current and the temperature from the driving device detection unit as one of the abnormality determination factors. Item 20. The elevator device according to any one of Items 20 to 20.

22. The element according to any one of claims 13 to 21, wherein the detecting means is configured to continuously detect the state of the elevator over time. Evening equipment.