KR100738763B1 - Emergency stop system of elevator - Google Patents

Abstract

In an emergency stop system of an elevator, a governor rope is wound around a governor sheave which moves in synchronism with the lifting and lowering of an elevator car. The elevator car is equipped with an emergency stop device which is connected by a governor rope and brakes the elevator car by displacement of the elevator car with respect to the governor rope. The control device outputs an operation signal when detecting an abnormality in the speed of the elevator car. In the vicinity of the governor sheave, a rope catch device is provided. The rope catch device includes an electromagnetic actuator that operates by input of an operation signal, and a restraining portion that restrains the governor rope by the operation of the electromagnetic actuator.

Description

Elevator Emergency Stop System {EMERGENCY STOP SYSTEM OF ELEVATOR}

The present invention relates to an elevator emergency stop system for forcibly stopping an elevator car that runs at an abnormal speed.

In the conventional elevator apparatus, as shown in Unexamined-Japanese-Patent No. 2002-532366, the ropeless governor operated by an electromagnet is used, in order to prevent the fall of an elevator car. Ropeless governors incorporate a safety brake system. The ropeless governor is in contact with the rail by the operation of the electromagnet. The safety brake system is operated by the resistance caused by the ropeless governor contacting the rails. As a result, the elevator car is braked.

In such an elevator apparatus, in order to improve the operation reliability of the ropeless governor, it is necessary to frequently perform an operation test. However, whenever the operation test is performed, the ropeless governor comes into violent contact with the rail. In many cases, the life of the rails is shortened. As such, contact of the ropeless governor with the rails has hampered the long life of the safety brake system.

This invention is made | formed in order to solve the above subjects, and an object of this invention is to obtain the emergency stop system of the elevator which can aim at longer lifetime.

The emergency stop system of an elevator according to the present invention includes a detector for detecting a speed and a position of an elevator car, and an overspeed set level set to a value larger than the speed of the elevator car in normal operation. A control unit that outputs an operation signal when the elevator car speed is greater than the overspeed setting level at the position of the elevator car including the memory unit correspondingly stored, and obtained by the information from the detection unit. A rope catch device including a governor rope moving in parallel, an electromagnetic actuator actuated by input of an actuating signal, a restraint portion for restraining the governor rope by actuation of the electromagnetic actuator, and an elevator And a braking member that is foldable relative to a guide rail for guiding the car. , Is mounted on the elevator car, the governor rope is bound and a second East for the elevator car to push paste brake, the brake element to the rail by the governor is displaced (變 位) with respect to the elevator car governor rope.

BRIEF DESCRIPTION OF THE DRAWINGS The block diagram which shows typically the elevator apparatus which concerns on Embodiment 1 of this invention.

FIG. 2 is a graph showing an elevator car speed abnormality discrimination criterion stored in the memory of FIG. 1; FIG.

3 is a front view of the emergency stop device of FIG.

4 is a perspective view of the connection portion of the emergency stop device of FIG.

5 is a block diagram showing the rope catch device of FIG.

FIG. 6 is a cross-sectional view of the electronic actuator of FIG. 5. FIG.

FIG. 7 is a schematic front view showing an emergency stop device of the elevator emergency stop system according to Embodiment 2 of the present invention. FIG.

8 is a side view of the emergency stop device of FIG.

9 is a schematic front view showing another example according to Embodiment 2 of the present invention.

10 is a block diagram showing a rope catch device of the emergency stop system of an elevator according to a third embodiment of the present invention.

11 is a block diagram showing a rope catch device of the emergency stop system of an elevator according to a fourth embodiment of the present invention.

12 is a block diagram showing a rope catch device of an emergency stop system of an elevator according to a fifth embodiment of the present invention.

FIG. 13 is a view illustrating a state in which the rope catch device of FIG. 12 is operated. FIG.

It is a front view which shows the rope catch apparatus of the emergency stop system of the elevator which concerns on Embodiment 6 of this invention.

To practice the invention  Preferred form for

EMBODIMENT OF THE INVENTION Hereinafter, preferred embodiment of this invention is described with reference to drawings.

Embodiment 1.

FIG. 1: is a block diagram which shows typically the elevator apparatus which concerns on Embodiment 1 of this invention. In the drawing, in the hoistway 1, the guide rail 2 of a pair of elevator cars is provided. The elevator car 3 is guided to the guide rail 2 of the elevator car and raised and lowered in the hoistway 1. At the upper end of the hoistway 1, a hoist 4, which is a drive device for lifting and lowering the elevator car 3 and the balance weight 6, is disposed. The main rope 5 is wound and hung on the drive sheave 4a of the hoisting machine 4. The elevator car 3 and the balance weight 6 are suspended in the hoistway 1 by the main rope 5. The hoist 4 is provided with a brake device (not shown) for braking the rotation of the drive sheave 4a.

In the elevator car 3, a pair of emergency stop devices (braking parts) 7 which are interlocked with each other are mounted to the guide rails 2 of the elevator cars. Each emergency stop device 7 is disposed under the elevator car 3. The elevator car 3 is emergency braked by the operation of each emergency stop device 7.

In addition, a rotatable governor sheave 8 is provided at the upper end of the hoistway 1. The governor sheave 8 is wound around the governor rope 9 which moves in synchronization with the lifting and lowering of the elevator car 3. Both ends of the governor rope 9 are connected to one emergency stop device 7. At the lower end of the hoistway 1, a pulley 10 on which the governor rope 9 is wound and hung is provided. The pull pulley 10 is suspended in the hoistway 1 by the governor rope 9. Tension is given to the governor rope 9 by the weight of the pulley 10.

The governor sheave 8 is provided with an encoder 11 which is a detection unit for detecting the position and the speed of the elevator car 3. In addition, in the hoistway 1, an emergency stop system control device 12 (hereinafter, simply referred to as "control device 12") is provided as a control unit for controlling the operation of the emergency stop system. The encoder 11 is electrically connected to the control apparatus 12. As the control apparatus 12, the position and speed of the elevator car 3 are calculated | required based on the measurement signal obtained from the encoder 11. As shown in FIG. In this example, in the control apparatus 12, the position of the elevator car 3 is calculated | required based on the measurement signal from the encoder 11, and the elevator car 3 is differentiated by differentiating the position of the elevator car 3. The speed of is to be found. The control apparatus 12 outputs the operation signal which is an electric signal when the speed of the elevator car 3 becomes abnormal.

The control device 12 includes a storage unit (memory) 13 in which an elevator car speed error discrimination criterion (setting data) serving as a reference for detecting an abnormality in the speed of the elevator car 3 is stored in advance. And an arithmetic unit (CPU) 14 for detecting the presence or absence of abnormality in the speed of the elevator car 3 based on the information of the encoder 11 and the storage unit 13.

In the hoistway 1, a plurality of reference position sensors (reference position detectors) 15 are provided at intervals from each other in the direction in which the elevator car 3 moves up and down. As each reference position sensor 15, a micro switch, an induction plate, etc. are used, for example. Each reference position sensor 15 outputs a detection signal to the calculation unit 14 when detecting the elevator car 3. In the calculating part 14, the reference position used as a reference when measuring the position of the elevator car 3 is calculated | required by input of a detection signal. In this example, the position of the reference position sensor 15 which detected the elevator car 3 becomes a reference position. In the calculating part 14, the distance from a reference position is calculated | required by the information from the encoder 11, and the position of the elevator car 3 is calculated.

In the vicinity of the gerber sheave 8, a rope catch device (rope restraint device) 16 for restraining the governor rope 9 is provided. The rope catch device 16 is operated by input of an operation signal from the control device 12. The governor rope 9 is restrained by the operation of the rope catch device 16.

FIG. 2 is a graph showing the criteria for determining the speed abnormality of the elevator car stored in the storage unit 13 of FIG. In the drawing, the lifting section 1 is provided with a lifting section in which the elevator car 3 lifts between one stop layer (stop position) and the other stop layer (stop position). In this example, one stop layer is the uppermost layer, and the other stop layer is the lowermost layer. In the lifting section, the acceleration / deceleration section in which the elevator car 3 is accelerated and decelerated is adjacent to each of the one and the other stop layers, and the elevator car 3 is at a constant speed (rated) between the acceleration and deceleration sections. A constant speed section moving at speed) is provided. In addition, in this example, each reference position sensor 15 (FIG. 1) is arrange | positioned in the acceleration / deceleration section.

As the speed abnormality determination criterion of the elevator car, three levels of setting levels for determining the abnormal level of the speed of the elevator car 3 are set in correspondence with the position of the elevator car 3. That is, as a criterion for determining the abnormality of the speed of the elevator car, it is higher than the normal speed setting level (normal speed pattern) 17 and the cylinder inheritance setting level 17 as the speed of the elevator car 3 during normal operation. A first overspeed setting level (first overspeed pattern) 18 having a large value, and a second overspeed setting level (second overspeed pattern) having a value larger than the first overspeed setting level 18 ( 19) are set corresponding to the positions of the elevator car 3, respectively.

The normal speed setting level 17, the first overspeed setting level 18, and the second overspeed setting level 19 are continuous toward one and the other stop layer in the acceleration / deceleration section so as to have a constant value in the constant speed section. Each is set so as to be small. In addition, the 1st overspeed setting level 18 and the 2nd overspeed setting level 19 are set so that it may become a value smaller than the rated speed of the elevator car 3 on the side near the stationary floor of an acceleration / deceleration section. . Further, the difference between the first overspeed setting level 18 and the normal speed setting level 17 and the difference between the second overspeed setting level 19 and the first overspeed setting level 18 are: It is set so as to be substantially constant at all positions of the lifting section.

That is, in the storage unit 13, the normal speed setting level 17, the first overspeed setting level 18 and the second overspeed setting level 19 are the elevator car 3 as the speed abnormality determination criteria of the elevator car. It is stored corresponding to the position of. In the present embodiment, the stop layer is made the uppermost layer and the lowest layer, and the storage unit 13 is preferably set to the same overspeed setting at all times. However, the stop layer may be changed for each elevator run. 13) calculates the relationship between the elevator car position and the speed for each run of the elevator, and sets the overspeed setting level for the speed.

When the calculated speed of the elevator car 3 exceeds the first overspeed setting level 18, the calculating part 14 outputs an operation signal to the brake device of the hoisting machine 4, and the speed of the elevator car 3 reaches zero. When the overspeed setting level 19 is exceeded, an operation signal is output to the brake device and the rope catch device 16 of the hoisting machine 4. In addition, the calculating part 14 outputs the return signal which is an electrical signal to the rope catching device 16 when canceling operation | movement of the rope catching device 16 and returning to a normal state. As the operation signal and the return signal, the power stored in the capacitor is used.

FIG. 3 is a front view illustrating the emergency stationary device 7 of FIG. 1. 4 is a perspective view which shows the connection part of the emergency stationary device 7 of FIG. In the figure, each of the emergency stationary devices 7 is a wedge 20 that is a foldable braking member with respect to the guide rail 2 of the elevator car and a displacement of the elevator car 3 with respect to the governor rope 9. The rotation lever 21 which is a link mechanism which displaces the wedge 20 with respect to the elevator car 3, and the wedge 20 displaced by the rotation lever 21 are attached to the guide rail 2 of the elevator car. The chuck 22 which is a guide part guided in the contacting direction is included.

Each wedge 20 is arrange | positioned under the chuck 22. Each wedge 20 has a friction material 23 in contact with the guide rail 2 of the elevator car. An attachment portion 24 extending downward from the wedge 20 is fixed to the lower end of each wedge 20.

In the lower end part of the elevator car 3, the connecting shaft 25 extended horizontally is provided freely. One end of each rotation lever 21 is fixed to both ends of the connecting shaft 25 (FIG. 4). The other end of each rotation lever 21 is provided with a long hole 26 extending in the longitudinal direction of the rotation lever 21. Each rotation lever 21 is provided in the lower end part of the elevator car 3 so that the long hole 26 may be arrange | positioned under the chuck 22. Each attachment part 24 is attached to each long hole 26 so that a slide is possible.

An impression bar 27 to which both ends of the governor rope 9 are connected is rotatably connected to one rotation lever 21 (FIGS. 3 and 4). The impression bar 27 extends in the vertical direction. Each pivoting lever 21 rotates about the axis of the connecting shaft 25 by the impression rod 27 by the displacement with respect to the elevator car 3. Each wedge 20 is displaced in the direction close to the chuck 22 by the rotation to the upper end of the other end of the rotation lever 21.

The staple 22 is arrange | positioned in the recessed part 29 provided in the lower end part of the elevator car 3. In addition, the chuck 22 includes a slide member 30 and a push member 31 arranged to sandwich the guide rail 2 of the elevator car. The slide member 30 and the push member 31 are supported by the support member 32 fixed in the recess 29.

The slide member 30 is provided with an inclined portion 33 for slidably holding the wedge 20. The inclination part 33 is inclined with respect to the guide rail 2 of an elevator car so that the space | interval with the guide rail 2 of an elevator car may become small upward. In addition, the slide member 20 is fixed to the support member 32.

The pushing member 31 is supported by the supporting member 32 through the supporting spring 34 which is an elastic body. The pushing member 31 has a friction material 35 in contact with the elevator guide rail 2.

The wedge 20 is slid upward along the inclined portion 33, so that the wedge 20 is displaced in a direction of contact with the guide rail 2 of the elevator car, and the guide rail 2 and the slide member 30 of the elevator car. It is to be pushed in between. The elevator car 3 is displaced to the left of the figure with respect to the guide rail 2 of the elevator car by pushing the wedge 20 between the guide rail 2 of the elevator car and the slide member 30. It is. As a result, the wedge 20 and the pushing member 31 are displaced in directions close to each other, and the guide rail 2 of the elevator car is fitted. When the wedge 20 and the pushing member 31 are pushed to the guide rail 2 of the elevator car, the braking force with respect to the elevator car 3 is generated.

In addition, a tow spring (not shown) is provided at the lower end of the elevator car 3 to push the connecting shaft 25 in the direction in which the wedges 20 are displaced downward. Thereby, malfunction of each emergency stop device 7 is prevented. Moreover, the stopper 36 which regulates rotation to the lower side of the rotation lever 21 is being fixed to the lower end part of the elevator car 3. Thereby, the shift | offset | difference of the wedge 20 from the inclination part 33 is prevented.

5 is a configuration diagram illustrating the rope catch device 16 of FIG. 1. In the figure, the rope catching device 16 is supported by a frame 41 in which the governor sheave 8 is provided. Further, the rope catch device 16 is a push shoe 42 which is a restrainable portion that is displaceable between a restraint position that restrains the governor rope 9 and an open position that releases the restraint of the governor rope 9. And an electromagnetic actuator 43 for generating a motive force for displacing the push shoe 42 between the restraint position and the open position, and the electromagnetic actuator 43 and the push shoe 42 to connect the electromagnetic actuator ( And a coupling mechanism portion 44 which transmits the driving force of the 43 to the pushing shoe 42.

On the mold 41, the attachment member 45 to which the electromagnetic actuator 43 is attached is fixed. The attachment member 45 includes a horizontal portion 46 on which the electromagnetic actuator 43 is mounted, and a vertical portion 47 extending upward from an end of the horizontal portion 46.

The push shoe 42 is a friction material which has a contact surface facing the outer periphery of the governor sheave 8. Further, the pushing shoe 42 is pushed into the governor sheave 8 through the governor rope 9 when in the restrained position and is separated from the governor rope 9 when in the open position.

The electromagnetic actuator 43 is operated by input of an operation signal from the control device 12, and is configured to displace the push shoe 42 to the restraint position. Moreover, the electromagnetic actuator 43 returns by input of the return signal from the control apparatus 12, and is made to displace the push shoe 42 to an open position.

The coupling mechanism 44 is provided with a movable rod 48 which moves reciprocally by the drive of the electromagnetic actuator 43, and a pushing shoe 42, which is restrained by the reciprocating movement of the movable rod 48. The displacement lever 49 which displaces the pushing shoe 42 between a position and an open position is included.

One end (lower end) of the displacement lever 49 is rotatably attached to the mold 41, and the other end (upper end) of the displacement lever 49 is slidably attached to the movable rod 48. In addition, the pushing shoe 42 is rotatably attached to the intermediate part of the displacement lever 49. As shown in FIG. The displacement lever 49 rotates in the direction in which the pushing shoe 42 is displaced to the open position by the advancement of the movable rod 48, and the pushing shoe 42 is restrained by the retraction of the movable rod 48. It rotates in the direction displaced to a position.

The movable rod 48 extends horizontally from the electromagnetic actuator 43 and slidably penetrates the vertical portion 47. Moreover, the 1st spring connection part 51 is being fixed to the front-end | tip part of the movable rod 48. As shown in FIG. Between the upper end part of the displacement lever 49 and the 1st spring connection part 51, the pressing spring 52 which is an elastic body for pushing the pushing shoe 42 at the restraint position to the governor sheave 8 side is connected, have.

The second spring connecting portion 53 is fixed to a portion between the electromagnetic actuator 43 and the vertical portion 47 of the movable rod 48. Between the vertical part 47 and the 2nd spring connection part 53, the adjustment spring 54 which is an elastic body for reducing the load of the electromagnetic actuator 43 is connected. The adjustment spring 54 is adjusted so as to push in the direction opposite to the pushing direction of the pressing spring 52 with respect to the reciprocating motion of the movable rod 48. Thereby, the magnitude | size of the load of the electromagnetic actuator 43 when the pushing shoe 42 is in a restraint position, and the magnitude | size of the load of the electromagnetic actuator 43 when the pushing shoe 42 is in an open position. It is preventing the big difference from occurring.

The stopper 55 which regulates the range to which the upper end part of the displacement lever 49 slides is fixed to the part between the upper end part of the displacement lever 49 of the movable rod 48, and the vertical part 47. As shown in FIG. The stopper 55 rotates the displacement lever 49 in the direction in which the pushing shoe 42 is displaced to the open position while pressing the other end of the displacement lever 49 when the movable rod 48 moves forward. It is.

FIG. 6 is a cross-sectional view illustrating the electromagnetic actuator 43 of FIG. 5. In the figure, the electromagnetic actuator 43 includes a movable iron core (movable portion) 56 fixed to the rear end of the movable rod 48 and a drive portion 57 for displacing the movable iron core 56.

The movable iron core 56 has an operating position at which the push shoe 42 restrains the governor rope 9 at the restrained position, and the push shoe 42 is displaced at the open position to release the restraint of the governor rope 9. It is possible to displace between the release position.

The drive unit 57 includes a fixed iron core including a pair of restricting portions 58 and 59 for restricting displacement of the movable iron core 56 and a side wall portion 60 for connecting the restricting portions 58 and 59 to each other ( 61, a first coil 62 that is housed in the fixed iron core 61 and is a release coil that displaces the movable iron core 56 in a direction in contact with one of the restricting portions 58 by energization; A second coil 63, a first coil 62, which is an operation coil that is accommodated in the fixed iron core 61 and displaces the movable iron core 56 in a direction in contact with the other restricting portion 59 by energization; An annular permanent magnet 64 disposed between the second coils 63 is included.

In one of the restricting portions 58, a through hole 65 through which the movable rod 48 passes is provided. The movable iron core 56 is in contact with the one restricting portion 58 when in the unlocked position, and in contact with the other restricting portion 59 when in the operating position.

The first coil 62 and the second coil 63 are annular electromagnetic coils surrounding the movable iron core 56. In addition, the first coil 62 is disposed between the permanent magnet 64 and one regulating part 58, and the second coil 63 is disposed between the permanent magnet 64 and the other regulating part 59. It is arranged in between.

In the state where the movable iron core 56 is in contact with one of the restricting portions 58, a space made of magnetoresistance exists between the movable iron core 56 and the other restricting portion 59, so that the permanent magnet 64 The amount of magnetic flux is greater on the first coil 62 side than on the second coil 63 side, and the movable iron core 56 is held in contact with one of the restricting portions 58.

In the state where the movable iron core 56 is in contact with the other restricting portion 59, a space made of magnetoresistance exists between the movable iron core 56 and the one restricting portion 58, and thus the permanent magnet 64 ), The amount of magnetic flux is larger on the second coil 63 side than on the first coil 62 side, and the movable iron core 56 is kept in contact with the other restricting portion 59.

In the second coil 63, the operation signal from the calculating section 14 (Fig. 1) is input. Moreover, the 2nd coil 63 is made to generate | occur | produce the magnetic flux which is opposite to the force which keeps the contact of the movable iron core 56 to one control part 58 by input of an operation signal. In addition, the return signal from the calculation unit 14 is input to the first coil 62. In addition, the first coil 62 is configured to generate a magnetic flux opposite to a force for holding the movable core 56 in contact with the other restricting portion 59 by the input of the return signal.

Next, the operation will be described. In normal operation, the pushing shoe 42 is displaced to the open position by the advancement of the movable rod 48 (FIG. 5). Moreover, the wedge 20 of each emergency stop device 7 is separated from the guide rail 2 of an elevator car (FIG. 3).

When the speed of the elevator car 3 exceeds the 1st overspeed setting level 18 (FIG. 2) which raises more than abnormally, an operation signal is output from the control apparatus 12 to the brake apparatus of the hoisting machine 4, and a brake apparatus Works. As a result, the driving sheave 4a is braked and the elevator car 3 is braked.

Although the brake device of the hoisting machine 4 is operated, the speed of the elevator car 3 continues to increase by, for example, cutting of the main rope 5, and thus the second overspeed setting level 19 (Fig. When 2) is exceeded, an operation signal is output from the control apparatus 12 to the rope catching device 16. In other words, the electric power stored in the capacitor is quickly output from the associating portion 14 to the second coil 63 as an operation signal. As a result, the movable rod 48 is retracted, and the displacement lever 49 is rotated in the counterclockwise direction in FIG. 5. Thereby, the pushing shoe 42 is pushed by the governor rope 8 via the governor rope 9, and is displaced to the restraint position. As a result, the governor rope is restrained by the rope catching device 16. In a state where the pushing shoe 42 is displaced to the restraint position, the movable iron core 56 is held in contact with the other restricting portion 59.

By restraining the governor rope 9 by the rope catching device 16, the governor rope 9 is displaced upward with respect to the elevator car 3 descending at an abnormal speed, and the wedge 20 is chuck 22. Are displaced in a near direction, ie upwards. At this time, the wedge 20 is displaced in the direction of contact with the guide rail 2 of the elevator car while the inclined portion 33 slides. Thereafter, the wedge 20 and the pushing member 31 come into contact with the guide rail 2 of the elevator car and are pushed. The wedge 20 is displaced further upward by the contact with the guide rail 2 of the elevator car and engages between the guide rail 2 of the elevator car and the slide member 30. As a result, a large frictional force is generated between the wedge 20 and the pushing member 31 and the guide rail 2 of the elevator car, and the elevator car 3 is braked.

When releasing braking of the elevator car 3, the elevator car 3 is raised, and then a return signal is output from the control device 12 to the rope catching device 16. That is, the power stored in the capacitor is quickly outputted from the calculation unit 14 to the first coil 62 as a return signal. As a result, the movable rod 48 moves forward. Thereafter, the displacement lever 49 comes into contact with the stopper 55 and rotates clockwise in FIG. 5. As a result, the pushing shoe 42 is displaced to the open position, and the restraint of the governor rope 9 is released.

In such an emergency stationary system of the elevator, when the second overspeed setting level 19 set in accordance with the position of the elevator car 3 is exceeded, an operation signal is output from the control device 12 to the electronic actuator 43. Since the push shoe 42 of the rope catching device 16 restrains the governor rope 9 by the operation of the electromagnetic actuator 43 by the input of the operation signal, for example, the operation of the emergency stop system. In the case of testing or the like, by stopping the elevator car 3, the operation test of the rope catching device 16 which requires high reliability is performed without contacting the wedge 20 to the guide rail 2 of the elevator car. I can do it. Therefore, wear and damage of the guide rail 2 and the wedge 20 of the elevator car by operation test etc. can be reduced, and the life of the emergency stop system of an elevator can be extended.

In addition, since the rope catch device 16 is separate from the emergency stop device 7, the rope catch device 16 can be installed in the vicinity of the governor sheave 8, and maintenance work by an operator can be easily performed. can do.

Further, the hoistway 1 is provided with an acceleration / deceleration section in which the elevator car 3 is in contact with the stationary floor of the elevator car 3 and the elevator car 3 is accelerated and decelerated during normal operation. In the acceleration / deceleration section, it is designed to continuously decrease toward the stationary floor. In the vicinity of the stationary floor of the elevator car 3, the speed abnormality when the speed of the elevator car 3 is small can be detected. The impact of the elevator car 3 can be reduced. In addition, the braking distance of the elevator car 3 can be shortened, and the length in the height direction of the hoistway 1 can also be shortened.

In addition, since the reference position sensor 15 which detects the reference position at the time of detecting the position of the elevator car 3 is provided in the acceleration / deceleration section, the position of the elevator car 3 in the acceleration / deceleration section more precisely. Can be detected.

Moreover, since the elevator 11 is provided in the governor sheave 8, the position and speed of the elevator car 3 can be detected easily with a simple structure.

In addition, the electromagnetic actuator 43 includes a movable iron core 56 capable of reciprocating displacement between the operating position and the release position, a second coil 63 for displacing the movable iron core 56 to the operating position by energization. And a first coil 62 for displacing the movable iron core 56 to the release position by energization, and a permanent magnet 64 for selectively holding the movable iron core 56 at the operating position and the release position. The movable iron core 56 can be more surely displaced between the operating position and the releasing position. Moreover, there is no power consumption in the holding state, and power saving can be achieved.

In addition, since the pushing shoe 42 is pushed to the governor sheave 8 through the governor rope 9 by the operation of the electromagnetic actuator 43, the number of parts of the rope catching device 16 can be reduced. The cost can be reduced. In addition, the installation work of the rope catch device 16 can be facilitated.

Embodiment 2.

FIG. 7 is a schematic front view showing an emergency stationary device of an elevator emergency stop system according to Embodiment 2 of the present invention, and FIG. 8 is a side view showing the emergency stop device of FIG. In Embodiment 1, in order to brake the elevator car 3, although the guide rail 2 is fitted by the wedge 20 and the pushing member 31, as shown in FIG. The guide rail 2 of the elevator car may be fitted by the wedge 20 of the elevator car.

In the figure, each emergency stop device 7 is angled relative to the elevator car 3 by the restraint of the pair of wedges 20 and the governor rope 9 when the elevator car 3 is lowered. The link mechanism 71 which displaces the wedge 20, and the chuck 72 which is a guide part which guides each wedge 20 displaced by the link mechanism 71 in the direction which contact | connects the guide rail 2 of an elevator car. It is included.

The link mechanism 71 includes a connecting plate 73 having one end rotatably connected to the impression bar 27, a horizontal shaft 74 fixed to the other end of the connecting plate 73, and extending horizontally. And a pair of wedge attachment members 75 fixed to the horizontal shaft 74 and provided with respective wedges 20. An attachment part 24 for attaching the wedge 20 to the wedge attachment member 75 is fixed to the lower end of each wedge 20.

The horizontal shaft 74 is provided in the elevator car 3. In addition, the horizontal axis 74 is free to rotate about the axis line of the horizontal axis 74. One end of each wedge attachment member 75 is fixed to the horizontal shaft 74. The other end of each wedge attachment member 75 is provided with a long hole 76 to which the attachment portion 24 is slidably attached. The attachment part 24 is slidably attached to the long hole 76.

Each emergency stop device 7 is connected by an interlocking member 77. As a result, the emergency stop devices 7 operate in conjunction with each other.

One end of the interlocking member 77 is rotatably connected to the lower end of one of the wedge attachment members 75. In addition, the other end of the interlocking member 77 is rotatably connected to the upper end of the other wedge attachment member 75. Thereby, the one and the other wedge attachment member 75 is rotated about each horizontal axis 74 so that each wedge 20 may displace in the same direction with respect to the elevator car 3 ( 8).

The chuck 72 includes a pair of slide members 30 for guiding each wedge 20. Each slide member 30 is supported by the support member 32 via the support spring 34, respectively. Thereby, when the guide rail 2 of an elevator car is fitted by each wedge 20, the force pushing against each wedge 20 is given. The other configuration is the same as that of the first embodiment.

Next, the operation of each emergency stop device 7 will be described. When the lifting rod 27 is displaced upward with respect to the elevator car 3 by the operation of the rope catching device 16, the connecting plate 73 and each wedge attachment member 75 move the axis of the horizontal axis 74. It is rotated to the center. Thereby, each wedge 20 is displaced upwards with respect to the elevator car 3, and is displaced in the direction which contact | connects the guide rail 2 of the elevator car along each slide member 30. As shown in FIG. Accompanying this, each wedge 20 of the other emergency stop device 7 is also displaced upward with respect to the elevator car 3, while being displaced in the direction of contact with the guide rail 2 of the elevator car.

Each wedge 20 is displaced further upward with respect to the elevator car 3 even after contacting the guide rail 2 of the elevator car, and is engaged between the guide rail 2 of the elevator car and the sliding member 30. Enter As a result, a large friction force is generated between each wedge 20 and the guide rail 2 of the elevator car, and the elevator car 3 is braked.

Even in such an emergency stop system of an elevator, the operation test of the rope catching device 16 which requires high reliability can be performed without contacting the wedge 20 to the guide rail 2 of the elevator car, Friction, damage, etc. of the guide rail 2 and the wedge 20 can be reduced. Therefore, the life of the emergency stop system of an elevator can be extended.

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Embodiment 3.

FIG. 10: is a block diagram which shows the rope catch apparatus of the emergency stop system of the elevator which concerns on Embodiment 3 of this invention. In the figure, an electromagnetic actuator 81 is attached to the attachment member 45. The electromagnetic actuator 81 includes a movable portion 82 which is displaceable between an operating position for restraining the governor rope 9 to the push shoe 42 and a release position for releasing the restraint of the governor rope 9, and a movable portion ( A pressing spring 83, which is a pushing portion for pushing the 82 to the operating position, and an electromagnetic magnet 84 for displacing the movable portion 82 to the release position as opposed to the pushing of the pressing spring 83. . The electromagnetic magnet 84 is attached on the horizontal portion 46.

The movable part 82 is fixed to the movable plate 85 which is attracted by the electromagnetic magnet 84 by the electricity supply to the electromagnetic magnet 84, and the movable plate 85, and the electromagnetic magnet 84 and the vertical part The movable rod 86 which slidably penetrates 47 is included.

The tip end of the movable rod 86 is connected to the upper end of the displacement lever 49 via the link 87. The link 87 is rotatably connected to each of the movable rod 86 and the displacement lever 49. The spring connection part 88 is fixed to the part between the electromagnetic magnet 84 and the vertical part 47 of the movable rod 86. As shown in FIG. The pressing spring 83 is connected between the spring connection part 88 and the vertical part 47.

Here, the displacement lever 49 is rotated by the reciprocating motion of the movable rod 86. Therefore, a difference occurs in the positional relationship between the movable rod 86 and the displacement lever 49 due to the difference in the respective displacements of the movable rod 86 and the displacement lever 49. To allow this change, a link 87 is connected between the movable rod 86 and the displacement lever 49.

The electromagnetic actuator 81 is configured to operate by input of an operation signal from the control device 12. The electromagnetic actuator 81 is operated by stopping the energization to the electromagnetic magnet 84. By the operation of the electromagnetic actuator 81, the movable portion 82 retreats and is displaced to the operating position. As a result, the pushing shoe 42 is displaced to the restraint position.

In addition, the operation of the electromagnetic actuator 81 is released by the input of the return signal from the control device 12. The electromagnetic actuator 81 is returned by energizing the electromagnetic magnet 84. By releasing the operation of the electromagnetic actuator 81, the movable portion 82 moves forward and is displaced to the release position. As a result, the pushing shoe 42 is displaced to the open position. In addition, the coupling mechanism 89 includes a link 97 and a displacement lever 49. In addition, the other structure is the same as that of Embodiment 1. FIG.

Next, the operation of the rope catching device will be described. In normal operation, the return signal from the control device 12 is intermittently input to the electromagnetic actuator 81, and the energized state to the electromagnetic magnet 84 is maintained. In this state, the movable part 82 is in the release position, and the restraint of the governor rope 9 by the pushing shoe 42 is released.

When the operation signal from the control apparatus 12 is input to the electromagnetic actuator 81, the electricity supply to the electromagnetic magnet 84 is stopped. As a result, the suction of the movable plate 85 by the electromagnetic magnet 84 is released, and the movable portion 82 is retracted by the pushing spring 83 to be displaced to the operating position. As a result, the pushing shoe 42 is displaced to the restraint position, and the governor rope 9 is restrained. The subsequent operation is the same as that of the first embodiment.

At the time of return, the return signal is output from the control device 12 to the electromagnetic actuator 81 and energized by the electromagnetic magnet 84. As a result, the movable portion 82 moves forward, and the pushing shoe 94 is displaced to the open position. As a result, the restraint of the governor rope 9 is released.

In such an elevator emergency stop system, the movable portion 82 is displaced to the operating position by the pressing spring 83 and displaced to the release position as opposed to the pushing of the pressing spring 83 by energization of the electromagnetic magnet 84. Since it is possible to extend the life of the emergency stop system as in the above-described embodiment, the structure of the electromagnetic actuator 81 can be simplified and the cost can be reduced.

Embodiment 4.

It is a block diagram which shows the rope catch apparatus of the elevator emergency stop system which concerns on Embodiment 4 of this invention. In the figure, a fixing member 91 extending downward from the mold 41 is fixed to the lower end of the mold 41. The receiving member 92, which is a high friction material, is attached to the fixing member 91. The upper end of the substantially L-shaped displacement lever 93 is rotatably connected to the mold 41.

In the middle part of the displacement lever 93, the pushing shoe 94 which is a pressing member which is displaceable in the direction which fold | folds with respect to the receiving part 92 is provided so that rotation is possible. The push shoe 94 is disposed between the restrained position pushed to the receiving part 92 through the governor rope 9 and the open position away from the governor rope 9 by the rotation of the displacement lever 93. Displaceable. The part which contacts the governor rope 9 of the pushing shoe 94 is a high friction material.

Under the mold 41, an actuator support member 96 having a projection 95 is fixed. The actuator support member 96 is supported with an electromagnetic actuator 43 having a configuration similar to that of the first embodiment. From the electromagnetic actuator 43, the movable rod 97 fixed to the movable iron core 56 is extended horizontally. The movable rod 97 slidably penetrates the protrusion 95.

The lower end part of the displacement lever 93 is slidably attached to the movable rod 97. Moreover, the stopper 98 which fixes the range to which the lower end part of the displacement lever 93 slides is fixed to the front-end | tip part of the movable rod 97. As shown in FIG. The spring connection part 99 is being fixed to the part between the lower end of the displacement lever 93 of the movable rod 97, and the protrusion 95. As shown in FIG.

Between the lower end part of the displacement lever 93 and the spring connection part 9, the press spring 100 which is an elastic body for pushing the pushing shoe 94 at the restraint position to the receiving part 92 side is connected. Moreover, between the protrusion part 95 and the spring connection part 99, the adjustment spring 101 which is an elastic body for reducing the load of the electromagnetic actuator 43 is connected.

The electromagnetic actuator 43 is adapted to be operated by input of an operation signal from the control device 12. The movable rod 97 is advanced by the operation of the electromagnetic actuator 43, and the push rod 94 is displaced to the restraint position. In addition, the movable rod 97 is retracted by input of a return signal to the electromagnetic actuator 43. The pushing shoe 94 is displaced to the open position by the retraction of the movable rod 97.

In addition, the restraining part 102 includes the receiving part 92 and the pushing shoe 94. In addition, the coupling mechanism 103 includes a movable rod 97 and a displacement lever 93. In addition, the other structure is the same as that of Embodiment 1. FIG.

Next, the operation of the rope catching device will be described. In normal operation, the movable rod 97 retreats and the pushing shoe 94 is disposed in the open position.

When the control signal from the control position 12 is input to the electromagnetic actuator 43, the displacement lever 93 is rotated as the movable rod 97 moves forward, and the pushing shoe 94 is displaced to the restraint position. As a result, the governor rope 9 is sandwiched between the receiving portion 92 and the pushing shoe 94 to be restrained. The subsequent operation is the same as that of the first embodiment.

At the time of return, the return signal is output from the control apparatus 12, and the movable rod 97 is retracted. As a result, the pushing shoe 94 is displaced to the open position, and the restraint of the governor rope 9 is released.

The emergency stop system of the elevator is such that the push shoe 94 is pushed through the governor rope 9 to the receiving portion 92 which is a high friction material during the operation of the rope catching device. The binding force of can be made larger.

Embodiment 5.

12 is a configuration diagram showing a rope catch device of the elevator emergency stop system according to Embodiment 5 of the present invention. 13 is a block diagram which shows the state in which the rope catch apparatus of FIG. 12 was operated. In the figure, the fixing member 111 is fixed in the vicinity of the governor rope 9. On the side of the fixing member 111, the receiving part 112 which is a high friction material is stuck.

In the hoistway 1, the horizontal shaft 113 is fixed. The horizontal axis 113 is arrange | positioned at the substantially same height as the receiving part 112. As shown in FIG. One end of the stretchable elastic stretchable body 114 is rotatably provided on the horizontal shaft 113. At the other end of the elastic stretchable body 114, a pushing shoe 115 which is displaceable in the direction of folding with respect to the receiving part 112 is rotatably provided. Pushing shoe 115 is a restrained position (FIG. 13) pushed to the receiving part 112 through the governor rope 9, and the open position from which the restraint of the governor rope 9 was released from the governor rope 9 is released. 12, it is displaced by rotation centering on the horizontal axis 113 of the elastic elastic body 114. As shown in FIG. The elastic stretching body 114 is reduced by the reaction force of the receiving portion 112 when the pushing shoe 115 is in the restrained position.

The length of the elastic stretch body 114 is rotated so that the lower end of the push shoe 115 does not touch the upper surface of the receiving part 112, while the elastic stretch body 114 becomes substantially horizontal, and the horizontal axis 113 ) And the receiving portion 112 is adjusted to be reduced. In addition, the elastic stretching body 114 is a push rod (116) provided with a push shoe 115 and a push spring for pushing the push shoe 115 at the restraint position toward the receiving portion 112 ( 117).

The stretching rod 116 includes a first connecting portion 118 rotatably provided on the horizontal shaft 113, a second connecting portion 119 rotatably provided on the push shoe 115, and first and second connecting portions ( 118 and 119 includes a stretchable portion 120 connected between. The expansion and contraction unit 120 includes a plurality of slide cylinders 121 that can slide with each other. In addition, the stretchable part 120 is expandable and contractible by sliding each slide cylinder 121.

The pressing spring 117 is connected between the first and second connecting portions 118 and 119. In addition, the pressing spring 117 is adapted to generate elastic restoring force in the direction in which the elastic expansion and contraction body 114 extends by the displacement of the first connecting portion 188 and the second connecting portion 119 in the directions close to each other.

Moreover, in the hoistway 1, the electromagnetic actuator 43 which is a structure of the same form as Embodiment 1 is provided. From the electromagnetic actuator 43, the movable rod 122 which can reciprocate with respect to the electromagnetic actuator 43 is extended in the up-down direction. Moreover, the spring connection part 123 is being fixed to the front-end | tip part of the movable rod 122. As shown in FIG. Moreover, the locking mechanism 124 is slidably provided in the part between the spring connection part 123 and the electromagnetic actuator 43 of the movable rod 122. As shown in FIG. The connecting spring 125 is connected between the spring connecting portion 123 and the locking mechanism 124.

The locking mechanism 124 and the push shoe 115 are connected to each other via the coupling mechanism portion 126. The coupling mechanism portion 126 includes a first link member 127 and a second link member 128 that are rotatably connected to each other.

The first link member 127 is supported by a support shaft 129 parallel to the horizontal axis 113. The support shaft 129 is fixed in the hoistway 1. The intermediate portion of the first link member 127 is provided on the support shaft 129 so as to be rotatable. In addition, one end of the first link member 127 is rotatably connected to the locking mechanism 124, and the other end of the first link member 127 is rotatably connected to one end of the second link member 128. It is.

The length of the second link member 128 is shorter than the length of the first link member 127. The other end of the second link member 128 is rotatably connected to the push shoe 115.

The pushing shoe 115 is rotated downward about the horizontal axis 113 by the displacement (forward) of the movable rod 112 upwards, and is displaced to a restraint position. In addition, the pushing shoe 115 is rotated upward with respect to the horizontal axis 113 by the displacement (retraction) below the movable rod 112, and is displaced to an open position.

In the vicinity of the receiving part 112, a stopper 130 for restricting the rotation of the pushing shoe 115 downward to hold the pushing shoe 115 in the restrained position is provided. In addition, the pushing shoe 115 is in contact with the governor rope 9 when the elevator car 3 is descending, so that the pushing shoe 115 is pushed toward the receiving part 112 side. It is supposed to be rotated. The other configuration is the same as that of the first embodiment.

Next, the operation of the rope catching device will be described. In normal operation, the movable rod 122 retreats downward, and the pushing shoe 115 is disposed in the open position (FIG. 12).

When the operation signal from the control apparatus 12 is input to the electromagnetic actuator 43, the movable rod 122 advances upwards and the pushing shoe 115 is rotated downward about the horizontal axis 113. As shown in FIG. At this time, the pushing shoe 115 rotates downward, presses the governor rope 9 to the right of the figure, and makes the governor rope 9 contact the side of the receiving part 112. Thereafter, the pushing shoe 115 is pulled further downward by the movement and the weight of the governor rope 9. At this time, the push shoe 115 is in a restrained position along the side of the receiving part 112 while reducing the elastic stretch body 114 in a state where the governor rope 9 is sandwiched between the receiving part 112. Is displaced. As a result, the elastic restoring force of the pressing spring 117 is generated, and the pushing shoe 115 pushes the governor rope 9 to the receiving part 112. As a result, the governor rope 9 is restrained (FIG. 13). The subsequent operation is the same as that of the first embodiment.

At the time of return, the return signal is output from the control apparatus 12, and the movable rod 122 is retracted. As a result, the pushing shoe 115 is displaced to the open position, and the restraint of the governor rope 9 is released.

In the emergency fixing system of such an elevator, the pushing shoe 115 is pulled in contact with the governor rope 9 to increase the pushing force of the governor rope 9 to the receiving part 112. Since it is displaced, the governor rope 9 can be restrained more reliably.

In addition, in the above example, although the restraint of the governor rope 9 is released by the electromagnetic actuator 43, a separate release device that generates a large driving force is used to release the restraint of the governor rope 9. Also good. As a releasing device, the device etc. which have a ball screw are mentioned, for example.

In addition, a wire or the like for pulling up the pushing shoe 115 may be connected to the pushing shoe 115 in advance. As a result, the restraint of the governor rope 9 can be released by the operator or the like.

Embodiment 6.

It is a front view which shows the rope catch apparatus of the emergency stop system of the elevator which concerns on Embodiment 6 of this invention. In the figure, the support shafts 141 and 142 are fixed to the frame 41, respectively. In the part between the support shaft 141 and the support shaft 142 of the mold 41, the support part 143 of the rotation shaft of the governor sheave 8 is provided. One end (lower end) of the support link 144 is provided on the support shaft 141, and one end (lower end) of the displacement lever 145 is rotatably provided on the support shaft 142.

Above the mold 41, the movable base 146 which is displaceable with respect to the mold 41 is arrange | positioned. The movable base 146 is connected to the other end (upper end) of the support link 144 and the displacement lever 145, respectively. As a result, the movable base 146 is supported by the mold 41 via the support link 144 and the displacement lever 145.

The movable base 146 includes a movable base main body 147 and a screw rod 148 extending outwardly from the movable base main body 147 and slidably penetrated at the upper end of the displacement lever 145. Doing. The upper end of the support link 144 is rotatably provided on the movable base main body 147.

The screw rod 148 is provided with a spring fixing mechanism 150 that can adjust the distance from the movable base main body 147. Between the upper end of the displacement lever 147 and the spring fixture 150, a pressing spring 151, which is an elastic body mounted on the screw rod 148, is disposed. The pressing spring 151 is contracted between the upper end of the displacement lever 147 and the spring fixing member 150. As a result, the upper end portion of the displacement lever 147 and the spring fixing member 150 are pushed in directions away from each other.

In the middle part of the displacement lever 147, the pushing shoe 152 which is a pressing member is provided so that rotation is possible. The push shoe 152 is displaceable between the restrained position pushed to the governor sheave 8 via the governor rope 9 and the open position away from the gerber rope 9. The push shoe 152 is displaced between the restrained position and the open position by a rotation about the support shaft 141 of the displacement lever 147.

A ratchet gear 153 which is integrally rotated with the governor sheave 8 is fixed to the governor sheave 8. The ratchet gear 153 includes a plurality of teeth 154 on the outer circumference.

A latch support shaft 155 is fixed to the movable base main body 147. On the latch support shaft 155, a latch 157 including a claw portion 156 is rotatably provided. The latch 157 is provided between a fitting position where the claw portion 153 is fitted to the teeth 154 of the ratchet gear 153 and a release position where the fitting with the ratchet gear 153 is released. Displacement is enabled. The latch 157 is displaced between the fitting position and the releasing position by the rotation about the latch support shaft 155.

The latch support shaft 155 is disposed at a position lower than the height of the tip portion of the toenail 156 when the latch 157 is in the fitting position. Further, the cut angle of the teeth 154 with respect to the rotational direction of the ratchet gear 153 indicates that the trajectory of the toenail 156 when the latch 157 is rotated about the latch support shaft 155. It is at an angle so as not to overlap the tooth portion 154. Thereby, the magnitude | size of the drive force of the operation | movement which shifts the latch 157 from a fitting position to a release position, ie, a return operation, can be made small.

On the movable base main body 147, the electromagnetic actuator 43 which is the structure of the same form as Embodiment 1 is attached. From the electromagnetic actuator 43, the movable rod 158 which can reciprocate with respect to the electromagnetic actuator 43 extends horizontally. The movable rod 158 is reciprocated in the horizontal direction by the drive of the electromagnetic actuator 43. The long hole 163 is provided in the front-end | tip part of the movable rod 158. The latch attaching member 159 slidably mounted to the long hole 163 is fixed to the latch 157. The latch 157 is displaced to the fitting position by the advancement of the movable rod 158, and is displaced to the release position by the retraction of the movable rod 158.

When the latch 157 is in the release position, the movable base main body 147 is supported by the support link 144 and the displacement lever 145 in a balanced manner, and the push shoe 152 is displaced to the open position. have. In the state where the latch gear 153 is rotated in the direction in which the elevator car 3 is lowered (the latch gear 153 is rotated in the direction C), the latch 157 is fitted. When it is displaced in the position, the movable base main body 147 is displaced by the rotational force of the ratchet gear 153 in the direction in which the pushing shoe 152 is displaced to the restrained position (right side of the frame 41). It is.

In addition, the frame 41 is provided with a first stopper 160 and a second stopper 161 for restricting the rotation of the support link 144. By restricting the rotation of the support link 144 by the first stopper 160, the push shoe 152 can be prevented from falling from the governor sheave 8 more than necessary. In addition, by restricting the rotation of the support link 144 by the second stopper 161, the pushing force toward the governor sheave 8 side of the pushing shoe 152 can be prevented from becoming larger than necessary. The damage of the governor rope 9 can be reduced.

Next, the operation of the rope catching device will be described. In normal operation, the movable rod 158 retreats and the latch 157 is displaced to the release position. In addition, the pushing shoe 152 is arrange | positioned in an open position. At this time, the support link 144 is in contact with the first stopper 160.

When the rotation speeds of the governor sheave 8 and the ratchet gear 153 become abnormal and the operation signal from the control device 12 is input to the electromagnetic actuator 43, the movable rod 158 advances and the latch ( 157 is displaced to the fit position. As a result, the teeth 154 of the ratchet gear 153 are fitted to the latch 157.

Thereafter, the movable base main body 147 is displaced to the right of the figure with respect to the mold 41 by the rotational force of the ratchet gear 153, and the pushing shoe 152 is displaced to the restraint position. At this time, the pushing shoe 152 is pushed by the pushing spring 151 to the governor sheave 8 via the governor rope 9. Thereby, the governor rope 9 is restrained. The pushing force of the pushing shoe 152 is adjusted by the contact of the support link 144 to the second stopper 161. The subsequent operation is the same as that of the first embodiment.

In such an emergency stop system of an elevator, when the latch 157 interlocking with the pushing shoe 152 is fitted to the ratchet gear 153, the latch gear 153 is displaced to the restrained position by the rotational force of the ratchet gear 153. Since the pushing shoe 152 is displaced in the direction, the rotational force of the ratchet gear 153 can be used to restrain the governor rope 9, and the rope catching device can be operated with a small driving force.

In addition, in the said Embodiment 4-6, although the movable rod is displaced by the electromagnetic actuator 43 which is a structure of the same form as Embodiment 1, by the electromagnetic actuator 81 which is a structure of the same form as Embodiment 3, The movable rod may be displaced.

The present invention relates to an elevator apparatus for braking an elevator car by a resistance force generated by a ropeless governor constructed by an electromagnet and to which a safety brake system is coupled to the rail, wherein the ropeless governor violently contacts the rail and It can be used in elevator emergency stop system which can be extended to solve the problem that the life of the rail is shortened due to wear or damage of steel.

Claims (10)

delete delete delete delete Detecting unit for detecting the speed and position of the elevator car, respectively In the normal operation, the overspeed setting level set to a value larger than the speed of the elevator car includes a storage unit stored in correspondence with the position of the elevator car, and at the position of the elevator car obtained by the information from the detection unit, A control unit for outputting an operation signal when the speed of the elevator car becomes larger than the overspeed setting level; A governor rope moving in synchronism with the elevating of the elevator car, A rope catch device comprising an electronic actuator actuated by the input of the actuation signal, a restraining portion for restraining the governor rope by actuation of the electromagnetic actuator, and A braking member that is foldable relative to a guide rail for guiding the elevator car, mounted to the elevator car, wherein the governor rope is constrained so that the elevator car is displaced relative to the governor rope. And a braking part for pushing the braking member to the governor rail to brake the elevator car. The electromagnetic actuator includes a movable portion capable of displacing between an operating position at which the restraint restrains the governor rope and a release position at which the restraint of the governor rope is released, and the movable part is displaced to the operating position by energization. An actuating coil for displacing the movable part into the release position by energization, and a permanent magnet for selectively holding the movable part in the actuating position and the release position. Elevator emergency stop system. Detecting unit for detecting the speed and position of the elevator car, respectively In the normal operation, the overspeed setting level set to a value larger than the speed of the elevator car includes a storage unit stored in correspondence with the position of the elevator car, and at the position of the elevator car obtained by the information from the detection unit, A control unit for outputting an operation signal when the speed of the elevator car becomes larger than the overspeed setting level; A governor rope moving in synchronism with the elevating of the elevator car, A rope catch device comprising an electronic actuator actuated by the input of the actuation signal, a restraining portion for restraining the governor rope by actuation of the electromagnetic actuator, and A braking member that is foldable relative to a guide rail for guiding the elevator car, mounted to the elevator car, wherein the governor rope is constrained so that the elevator car is displaced relative to the governor rope. And a braking part for pushing the braking member to the governor rail to brake the elevator car. The electromagnetic actuator may include a movable part that is displaceable between an operating position where the restraint restrains the governor rope and a release position that releases the restraint of the governor rope, a pressurizing part that presses the movable part to the operating position; And an electromagnetic magnet for displacing the movable part to the release position as opposed to the pushing of the pusher. Detecting unit for detecting the speed and position of the elevator car, respectively In the normal operation, the overspeed setting level set to a value larger than the speed of the elevator car includes a storage unit stored in correspondence with the position of the elevator car, and at the position of the elevator car obtained by the information from the detection unit, A control unit for outputting an operation signal when the speed of the elevator car becomes larger than the overspeed setting level; A governor rope moving in synchronism with the elevating of the elevator car, A rope catch device comprising an electronic actuator actuated by the input of the actuation signal, a restraining portion for restraining the governor rope by actuation of the electromagnetic actuator, and A braking member that is foldable relative to a guide rail for guiding the elevator car, mounted to the elevator car, wherein the governor rope is constrained so that the elevator car is displaced relative to the governor rope. And a braking part for pushing the braking member to the governor rail to brake the elevator car. The restraining portion is a pressing member that is displaceable in a direction that is folded with respect to the governor sheave, And the pressing member is adapted to be pushed into the governor sheave through the governor rope by the operation of the electromagnetic actuator. The method of claim 7, wherein The rope catch device includes a ratchet gear that is integrally rotated with the governor sheave, and a latch that is interlocked with the pressing member and which can be fitted to the ratchet gear by operation of the electromagnetic actuator. Including more, And the pressing member is adapted to be displaced in the direction of being pushed through the governor rope by the rotational force of the ratchet gear when the latch is fitted to the ratchet gear. Detecting unit for detecting the speed and position of the elevator car, respectively In the normal operation, the overspeed setting level set to a value larger than the speed of the elevator car includes a storage unit stored in correspondence with the position of the elevator car, and at the position of the elevator car obtained by the information from the detection unit, A control unit for outputting an operation signal when the speed of the elevator car becomes larger than the overspeed setting level; A governor rope moving in synchronism with the elevating of the elevator car, A rope catch device comprising an electronic actuator actuated by the input of the actuation signal, a restraining portion for restraining the governor rope by actuation of the electromagnetic actuator, and A braking member that is foldable relative to a guide rail for guiding the elevator car, mounted to the elevator car, wherein the governor rope is constrained and the elevator car is displaced relative to the governor rope. And a braking part for pushing the braking member to the governor rail to brake the elevator car. The restraint part includes a receiving part which is a high friction material, and a pressing member which is displaceable in a direction of folding with respect to the receiving part, And the pressing member is configured to be pushed to the receiving part through the governor rope by the operation of the electromagnetic actuator. The method of claim 9, An elastic stretchable body is connected to the pressing member, The pressing member is caused to be pulled by the governor rope while being in contact with the governor rope so that the pushing force to the receiving portion is displaced in an increasing direction by the elastic stretch body. .

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