WO2015173913A1

WO2015173913A1 - Elevator device and control method therefor

Info

Publication number: WO2015173913A1
Application number: PCT/JP2014/062847
Authority: WO
Inventors: 坂野　裕一; 政之垣尾; 琢夫釘谷
Original assignee: 三菱電機株式会社
Priority date: 2014-05-14
Filing date: 2014-05-14
Publication date: 2015-11-19

Abstract

In this elevator device, a suspended body abnormality detection device (17) detects breakage or over-stretching of suspended bodies (4) as an abnormality of said suspended bodies (4). In this case, the suspended body abnormality detection device (17) detects by distinguishing whether the degree of abnormality of said suspended bodies is a level one, or a level two that is higher than level one. If a level-one abnormality in the suspended bodies (4) occurs, a control unit (14) moves and stops a car (5) at any floor at which the car (5) stops, inputs an activation signal to a governor cable-gripping device (18) and performs operations to offload passengers, after which the control unit (14) moves the car downward to activate a car emergency stop device (13).

Description

Elevator apparatus and control method thereof

The present invention relates to an elevator apparatus in which a car is suspended by a plurality of suspension bodies and a control method therefor.

In the conventional elevator apparatus, the suspension abnormality detection device detects whether the degree of abnormality of the suspension is the first level or the second level higher than the first level. When the first level abnormality occurs in the suspension body, the elevator control device moves the car to the nearest floor, and then moves the car to a position more than a predetermined distance away from the car shock absorber (see, for example, Patent Document 1). .

International Publication No. 2013/094612

In the conventional elevator apparatus as described above, when the first level abnormality occurs in the suspension, the car is moved to a position more than a predetermined distance from the car shock absorber and stopped, so after the car is stopped In the unlikely event that the suspension body is completely broken, the emergency stop device operates after the car speed reaches an excessive speed, and the impact applied to the car due to the operation of the emergency stop device is large.

The present invention has been made in order to solve the above-described problems, and when a second level abnormality occurs after the operation of the car is suspended due to the first level abnormality, It is an object of the present invention to provide an elevator apparatus and a control method thereof that can prevent a large impact from being applied to the vehicle.

An elevator apparatus according to the present invention includes a hoisting machine having a drive sheave, a plurality of suspension bodies wound around the drive sheave, and a car that is suspended in the hoistway by the suspension body and moves up and down in the hoistway A control unit that controls the operation of the car and monitors the presence or absence of an abnormality, a car emergency stop device mounted on the car, a speed governor having a speed governor sheave, and being wound around the speed governor sheave A governor rope that is connected to the car emergency stop device and circulates as the car moves up and down, a governor rope gripping device that grips the governor rope according to the operation signal, and breakage of the suspension or A suspension abnormality detection device that detects excessive elongation as an abnormality of the suspension is provided, and the suspension abnormality detection device has a second level in which the degree of abnormality of the suspension is the first level or higher than the first level. At the level of When the first level abnormality occurs in the suspension, the control unit moves the car to one of the stop floors and stops it, and inputs an operation signal to the governor rope gripping device. At the same time, after the operation for getting off the passenger is performed, the car emergency stop device is operated by moving the car downward.
The elevator apparatus according to the present invention includes a hoist having a drive sheave, a plurality of suspension bodies wound around the drive sheave, and suspended in the hoistway by the suspension body. Control of the car, the operation of the car, a controller that monitors the presence or absence of an abnormality, a car shock absorber provided at the lower part of the hoistway, and detecting breakage or excessive elongation of the suspension as an abnormality of the suspension A suspension abnormality detection device, wherein the suspension abnormality detection device detects whether the degree of abnormality of the suspension is a first level or a second level higher than the first level, When the first level abnormality occurs in the suspension, the control unit moves the car to one of the stop floors, stops it, performs the operation to get off the passenger, and then turns the car into the car buffer. Close the shock absorber close position In stopping.
Furthermore, in the control method for an elevator apparatus according to the present invention, when breakage or excessive elongation of a suspension body is detected as an abnormality, if the number of suspension bodies in which the abnormality is detected is equal to or less than a set number, the car is either The car is stopped by moving to the stop floor, and the speed governor rope is gripped by the speed governor rope gripping apparatus, and the car emergency stop device is operated by moving the car downward after the passenger gets off.
Furthermore, in the control method for an elevator apparatus according to the present invention, when a breakage or excessive elongation of the suspension body is detected as an abnormality, if the number of suspension bodies in which the abnormality is detected is equal to or less than the set number, the car is either After moving to the stop floor and stopping the passengers, the car is brought close to the car buffer and stopped.

The elevator apparatus and the control method thereof according to the present invention prevent a large shock from being applied to the car when a second level abnormality occurs after the operation of the car is stopped due to the first level abnormality. be able to.

BRIEF DESCRIPTION OF THE DRAWINGS It is a block diagram which shows the elevator apparatus by Embodiment 1, 2 of this invention. It is a block diagram which shows the governor rope holding | grip apparatus of FIG. It is a block diagram which shows the suspension body abnormality detection apparatus of FIG. 3 is a flowchart illustrating an operation of a control unit according to the first embodiment. 6 is a flowchart illustrating an operation of a control unit according to the second embodiment. It is a block diagram which shows the elevator apparatus by Embodiment 3 and 4 of this invention.

Hereinafter, embodiments for carrying out the present invention will be described with reference to the drawings.
Embodiment 1 FIG.
1 is a block diagram showing an elevator apparatus according to Embodiment 1 of the present invention. In the figure, a machine room 2 is provided in the upper part of the hoistway 1. In the machine room 2, a hoisting machine 3 is installed. The hoisting machine 3 includes a driving sheave 3a, a hoisting machine motor that rotates the driving sheave 3a, and a hoisting machine brake that brakes the rotation of the driving sheave 3a.

A plurality of suspension bodies 4 (only one is shown in FIG. 1) are wound around the drive sheave 3a. As each suspension body 4, a rope or a belt is used.

The car 5 and the counterweight 6 are suspended in the hoistway 1 by the suspension body 4 and are moved up and down in the hoistway 1 by the driving force of the hoisting machine 3. In the hoistway 1, a pair of car guide rails (not shown) for guiding the raising and lowering of the car 5 and a pair of counterweight guide rails (not shown) for guiding the raising and lowering of the counterweight 6 are installed. Has been.

A car shock absorber 7 and a counterweight shock absorber 8 are installed at the lower part of the hoistway 1. A speed governor 9 is installed in the machine room 2. The governor 9 has a governor sheave 10. A governor rope 11 is wound around the governor sheave 10. The governor rope 11 is laid endlessly in the hoistway 1. The governor rope 11 is wound around a tension wheel 12 at the lower part in the hoistway 1.

Both ends of the governor rope 11 are connected to an operation lever of a car safety device 13 mounted on the car 5. As a result, the governor rope 11 circulates as the car 5 moves up and down. The governor sheave 10 rotates at a speed corresponding to the traveling speed of the car 5.

When the speed governor rope 11 is gripped by the speed governor 9 during traveling in the downward direction of the car 5, the operation lever is relatively lifted and the car emergency stop device 13 is activated. The car emergency stop device 13 grips the car guide rail when operating, and makes the car 5 emergency stop.

The control unit 14 includes an operation control device 15 that controls traveling of the car 5, door opening and closing, and the like, and a safety control device 16 that monitors the presence or absence of an abnormality in the elevator device. The operation control device 15 and the safety control device 16 each have an independent microcomputer. The operation control device 15 and the safety control device 16 can communicate with each other.

The car position information and the car speed information are input to the operation control device 15. The car position information and the car speed information are also input to the safety control device 16. The car position information and the car speed information are input directly to the safety control device 16 without passing through the operation control device 15.

The car position information and the car speed information are, for example, a speed governor encoder provided in the speed governor 9, a hoisting machine encoder provided in the hoisting machine 3, a sensor or a switch mounted in the car 5, or a hoistway It can be obtained from a sensor or a switch installed in 1.

A suspension abnormality detection device 17 that detects breakage or excessive elongation of the suspension 4 as an abnormality of the suspension 4 is provided at a connection portion of the suspension 4 to the car 5. A detection signal from the suspension abnormality detection device 17 is input to the safety control device 16.

A governor rope gripping device 18 is provided near the governor 9 in the machine room 2. The governor rope gripping device 18 grips the governor rope 11 in accordance with an operation signal from the safety control device 16.

FIG. 2 is a block diagram showing the governor rope gripping device 18 of FIG. 2 of the governor rope 11 moves upward when the car 5 rises and moves downward when the car 5 descends. The first and

second grip portions

31 and 32 that grip (hold) the governor rope 11 are opposed to each other with the governor rope 11 in between. A plurality of gripping force adjusting springs 34 are interposed between the first gripping portion 31 and the fixed portion 33.

The second grip 32 has a base 35, a wedge 36, and a wedge detachment stop 37. The base 35 is provided with an inclined surface 35a that approaches the governor rope 11 downward. The wedge 36 is slidable within a predetermined range along the inclined surface 35a. The upward displacement of the wedge 36 is regulated by a wedge detachment stop 37.

A gripping force applying device (actuator) 38 is connected to the base 35. When the actuation signal is input, the gripping force adding device 38 displaces the second gripping portion 32 in a direction in contact with the governor rope 11. The wedge 36 is brought into contact with the governor rope 11 by advancing the second grip 32 by the gripping force adding device 38.

At this time, if the car 5 is traveling downward, the wedge 36 is displaced obliquely downward along the inclined surface 34a. Thereby, the governor rope 11 is gripped between the first grip portion 31 and the wedge 36, and the movement of the governor rope 11 is restricted. Further, when the car 5 is raised, the wedge 36 is not displaced from the position in contact with the wedge detachment stop 37 to the first gripping portion 31 side, and the movement of the governor rope 11 is allowed. .

FIG. 3 is a block diagram showing the suspension abnormality detection device 17 of FIG. Three

rails

41a, 41b, and 41c are erected vertically on the upper portion of the car 5. A support plate 42 is fixed horizontally to the

rails

41a, 41b, 41c. The first to fourth shackle rods 43a to 43d pass through the support plate. A corresponding suspension body 4 is connected to the upper end portions of the shackle rods 43a to 43d.

Further, a spring pressing member 44 is fixed to each shackle rod 43a to 43d. A shackle spring 45 is provided between each spring pressing member 44 and the support plate 42. Each shackle spring 45 is compressed by a load acting on the corresponding shackle rod 43a to 43d.

The first movable plate 46a is movable up and down along the

rails

41a and 41b. The second movable plate 46b can move up and down along the

rails

41b and 41c. The first and second

movable plates

46 a and 46 b are normally held at predetermined positions below the spring pressing member 44. Further, the first and second

movable plates

46 a and 46 b are pushed down by the spring pressing member 44 when the suspension body 4 is broken (or excessively extended) and the shackle spring 45 is extended.

In the vicinity of the first movable plate 46a, a first detection switch 47a that is operated and opened by a downward displacement of the first movable plate 46a is disposed. The first detection switch 47a detects an abnormality of the suspension body 4 connected to the first and

second shackle rods

43a and 43b.

In the vicinity of the second movable plate 46b, a second detection switch 47b which is operated and opened by a downward displacement of the second movable plate 46b is disposed. The second detection switch 47b detects an abnormality of the suspension body 4 connected to the third and

fourth shackle rods

43c and 43d.

The suspension abnormality detection device 17 includes first and second

movable plates

46a and 46b, and first and

second detection switches

47a and 47b. Further, the suspension abnormality detection device 17 determines whether the degree of abnormality of the suspension 4, that is, the degree of occurrence of abnormality, is the first level or the second level higher than the first level. Detect and distinguish.

In this example, the first level is set when only one of the first and

second detection switches

47a and 47b is operated, and the second level is set when both are operated. Therefore, when an abnormality occurs in only one of the four suspension bodies 4, it is the first level, and when an abnormality occurs in three or more suspension bodies 4, it is the second level. Further, when an abnormality occurs in the two suspension bodies 4, there are cases where the first level is detected and the second level is detected depending on the position of the suspension body 4 where the abnormality has occurred.

The detection signals of the first and

second detection switches

47a and 47b are input to the safety control device 16. When the first level abnormality occurs, the control unit 14 moves the car 5 to one of the stop floors and stops it. In other words, when the abnormality of the suspension body 4 is detected by the suspension abnormality detection device 17, the control unit 14 selects the car 5 if the degree of the number of abnormal suspension bodies 4 is equal to or lower than a preset level. Move to that stop floor and stop.

In this example, when the first level abnormality occurs, the controller 14 moves the car 5 to the nearest floor and stops it. The nearest floor is the nearest stopable floor in the traveling direction of the car 5.

Further, when an abnormality of the first level occurs, the control unit 14 moves the car 5 to the nearest floor and stops it, and inputs an operation signal to the governor rope gripping device 18 to cause the governor rope 11 to move. The car emergency stop device 13 is actuated by moving the car 5 downward after gripping and performing an operation for getting the passenger to get off.

FIG. 4 is a flowchart showing the operation of the control unit 14 according to the first embodiment. The safety control device 16 determines whether or not the first or

second detection switch

47a, 47b is opened during normal operation of the car 5 (steps S1 to S3). If both the first and

second detection switches

47a and 47b are closed, it is determined that the suspension 4 is not broken and excessively stretched, and normal operation is continued.

When only one of the first or

second detection switches

47a and 47b is opened, the safety control device 16 determines that a first level abnormality has occurred and issues a command to move the car 5 to the nearest floor. Is output to the operation control device 15. Thereafter, when the safety control device 16 confirms that the car 5 has stopped at the nearest floor based on the car position information and the car speed information, the safety control device 16 grips the speed governor rope 11 with respect to the speed governor rope gripping device 18. A command is issued (step S5).

When the operation control device 15 receives the nearest floor stop command from the safety control device 16, the operation control device 15 moves the car 5 to the nearest floor and stops it (step S4), opens the door (step S6), and makes an announcement to drop the passenger. Perform (step S7). Thereafter, when a predetermined time elapses, the operation control device 15 closes the door (step S8), and moves the car 5 downward at a low speed. At this time, since the speed governor rope 11 is gripped by the speed governor rope gripping device 18, the car safety device 13 operates (step S9). When the car emergency stop device 13 is operated, the hoisting machine brake is also operated, and the car 5 is in an emergency stop state.

Here, the safety factor of the suspension 4 is set sufficiently high, and the performance of the suspension 4 is maintained by maintenance. For this reason, even if one of the suspension bodies 4 is broken or excessively extended, the load can be supported by the remaining suspension bodies 4, and the second one after the first suspension body 4 is broken or excessively extended. It is considered that there is a certain amount of time until the suspension body 4 is broken or excessively extended. Using this time, the car 5 can be moved to the nearest floor.

If both the first and

second detection switches

47a and 47b are opened, the safety control device 16 determines that there is a possibility that an abnormality has occurred in all the suspension bodies 4 (second level). The governor rope gripping device 18 is immediately actuated (step S10).

In such an elevator apparatus, when the first level abnormality occurs in the suspension body 4, the car emergency stop device 13 is operated after the car 5 is moved to the nearest floor and the passenger gets off. In the unlikely event that a second level abnormality occurs after the operation of the car 5 has been suspended due to an abnormality in the level, it is possible to prevent a large impact from being applied to the car 5.

Further, since the passenger gets off while holding the governor rope 11 by the governor rope gripping device 18, even if a second level abnormality occurs while the passenger is getting off, the car 5 is dropped. It can be stopped immediately.

Embodiment 2. FIG.
Next, a second embodiment of the present invention will be described. The configuration of the elevator apparatus of the second embodiment is the same as that of the first embodiment.

In the second embodiment, when the first level abnormality occurs in the suspension body 4, the control unit 14 moves the car 5 to one of the stop floors to stop it, and performs an operation for getting off the passenger. . In this example, when the first level abnormality occurs, the controller 14 moves the car 5 to the nearest floor and stops it.

Thereafter, the control unit 14 causes the car 5 to approach the car shock absorber 7 at a low speed, stops the car 5 at the shock absorber proximity stop position, and inputs an operation signal to the speed governor rope gripping device 18 to cause the speed governor rope 11 to move. Hold it. At this time, the shock absorber proximity stop position is a position where the distance to the car shock absorber 7 is equal to or less than the set distance. Further, it is desirable that the shock absorber proximity stop position is as close as possible to the car shock absorber 7 as long as it is not restricted by other safety devices (such as a terminal floor excess detection device).

Further, the distance between the car 5 and the car shock absorber 7 when the car 5 is stopped at the shock absorber proximity stop position is the speed at which the car 5 reaches the point where it starts free-falling and collides with the car shock absorber 7. Is a distance that does not exceed the permissible collision speed of the car shock absorber 7. Generally, the distance between the car 5 and the car shock absorber 7 when the car 5 is stopped at the shock absorber proximity stop position is equal to or less than the buffer stroke of the car shock absorber 7.

FIG. 5 is a flowchart showing the operation of the control unit 14 according to the second embodiment. In FIG. 5, operations in steps S1 to S4, 10, and 9 are the same as those in the first embodiment. In the second embodiment, after the first level abnormality occurs and the car 5 is moved to the nearest floor and stopped, the safety control device 16 does not input an operation signal to the governor rope gripping device 18. .

On the other hand, as in the first embodiment, the operation control device 15 opens the door on the nearest floor (step S6), makes an announcement for lowering the passenger (step S7), and closes the door after a predetermined time (step S8). . Thereafter, the operation control device 15 moves the car 5 downward at a low speed and stops it at the shock absorber proximity stop position (step S11). At this stage, when the safety control device 16 detects that the car 5 has stopped at the shock absorber proximity stop position, the safety control device 16 inputs an operation signal to the governor rope gripping device 18 (step S12). Operate the upper brake.

In such an elevator apparatus, when a first level abnormality occurs in the suspension body 4, the car 5 is moved to the nearest floor and the passenger gets off, and then the car 5 is moved to the shock absorber proximity stop position and stopped. Therefore, if a second level abnormality occurs after the operation of the car 5 is suspended due to the first level abnormality, it is possible to prevent the car 5 from being subjected to a large impact.

In addition, since the operation signal is input to the governor rope gripping device 18 after the car 5 is stopped at the shock absorber proximity stop position, the operation of the car 5 should be stopped due to the first level abnormality. When an abnormality of level 2 occurs, the car emergency stop device 13 can more reliably stop the car 5 while alleviating the impact applied to the car 5 by the car shock absorber 7.

After stopping the car 5 at the nearest floor, the governor rope gripping device 18 once grips the governor rope 11 and before the operation of moving the car 5 to the shock absorber proximity stop position, the governor rope. The gripping of the governor rope 11 by the gripping device 18 may be released.
Further, for example, when the distance between the car 5 and the car shock absorber 7 when stopped at the shock absorber proximity stop position is sufficiently small, the speed governor rope 11 is not necessarily gripped by the speed governor rope gripping device 18. You don't have to.

Embodiment 3 FIG.
Next, FIG. 6 is a block diagram showing an elevator apparatus according to Embodiment 3 of the present invention. In the third embodiment, the counterweight emergency stop device 19 is mounted on the counterweight 6. The counterweight emergency stop device 19 grips the counterweight guide rail and operates the counterweight 6 to make an emergency stop when operating.

The governor rope 11 is connected to the operation lever of the counterweight emergency stop device 19. The car emergency stop device 13 is connected to the governor rope 11 on one side of the governor sheave 10, and the counterweight emergency stop device 19 is connected to the governor rope 11 on the other side of the governor sheave 10. It is connected to the. Other configurations and operations are the same as those in the first embodiment.

In such an elevator apparatus, if the second level abnormality occurs after the operation of the car 5 is suspended due to the first level abnormality, the counterweight emergency stop device 19 immediately operates. The falling of the counterweight 6 can be prevented.

Embodiment 4 FIG.
Next, a fourth embodiment of the present invention will be described. The configuration of the elevator apparatus of the fourth embodiment is the same as that of the third embodiment. The operation of the control unit 14 of the fourth embodiment is the same as that of the second embodiment.

In such an elevator apparatus, in the unlikely event that a second level abnormality occurs after the operation of the car 5 is stopped at the shock absorber proximity stop position due to the first level abnormality, the counterweight emergency stop device 19 is provided. Operates immediately, so that the counterweight 6 can be prevented from falling.

The layout of the entire elevator apparatus is not limited to the configuration shown in FIGS. 1 and 6, and the present invention can be applied to, for example, a 2: 1 roping type elevator, a machine room-less elevator, and a double deck elevator. In addition, for example, an elevator of a type in which a hoisting machine is arranged at the lower part of the hoistway, an elevator using a plurality of hoisting machines for one car, and a plurality of elevators for one car The present invention can be applied to any type of elevator apparatus such as an elevator using a counterweight.

In the third and fourth embodiments, the car emergency stop device 13 and the counterweight emergency stop device 19 are connected to the common governor rope 11, but the counterweight for the counterweight, the governor rope, A governor rope gripping device or the like may be added. In this case, when the control unit stops the operation of the car 5 due to the first level abnormality, the control unit sends an operation signal to the governor rope gripping device for the car and the governor rope gripping device for the counterweight. You may enter.

Furthermore, in the above example, the suspension abnormality detection device 17 is provided on the car 5, but it may be provided on the counterweight 6. For example, in the case of 2: 1 roping, a suspension abnormality detection device may be provided in at least one of the connecting portions at both ends of the suspension provided in the upper part of the hoistway.

Furthermore, the detection method of the suspension abnormality detection device is not limited to the above example. For example, a method that uses a scale device, a method that uses a suspension of a suspension provided in a car, and an image diagnosis Various known detection methods such as a method based on the above or a method for detecting the state of the wire of the suspension can be used.

In

Embodiments

1 and 2, the degree of abnormality of the suspension is detected in two stages, but the degree of abnormality in the suspension may be detected in three or more stages. For example, the same number of detection switches as the number of suspensions may be used to accurately detect how many suspensions have broken. It is also possible to appropriately set how many breaks (which level of anomaly) are used to move to the nearest floor.

Furthermore, it is preferable to use a pattern different from the speed pattern before the abnormality of the suspension is detected as the speed pattern when the car is moved after the abnormality of the suspension is detected. For example, after the abnormality is detected, it is preferable to suppress the increase in the number of breaks (deterioration of the abnormality) by reducing the speed of the car or the deceleration.

Furthermore, the floor on which the car is moved when the suspension is abnormal is not limited to the nearest floor, and may be, for example, a specific stop floor designated in advance. Further, for example, the nearest floor among a plurality of stop floors designated in advance may be used.
In the above example, the control unit 14 having the drive control device 15 and the safety control device 16 is shown. However, the function of the control unit is implemented by one device or divided by three or more devices. Or you may.

Claims

Hoisting machine with drive sheave,
A plurality of suspensions wound around the drive sheave;
A car that is suspended in the hoistway by the suspension, and moves up and down in the hoistway;
A control unit that controls the operation of the car and monitors whether there is an abnormality,
A car safety device mounted on the car,
Governor with governor sheave,
A governor rope that is wound around the governor sheave and connected to the car emergency stop device, and that circulates as the car moves up and down,
A governor rope gripping device for gripping the governor rope according to an operation signal, and a suspension abnormality detecting device for detecting breakage or excessive elongation of the suspension as an abnormality of the suspension,
The suspension abnormality detection device detects whether the degree of abnormality of the suspension is a first level or a second level higher than the first level,
When the first level abnormality occurs in the suspension body, the control unit moves the car to one of the stop floors and stops it, and inputs an operation signal to the governor rope gripping device. An elevator apparatus that operates the car emergency stop device by moving the car downward after performing an operation for getting off the passenger.
The balance weight which is suspended in the said hoistway by the said suspension body, moves up and down in the said hoistway, and the counterweight emergency stop apparatus mounted in the said counterweight. The elevator apparatus as described.
Hoisting machine with drive sheave,
A plurality of suspensions wound around the drive sheave;
A car that is suspended in the hoistway by the suspension, and moves up and down in the hoistway;
A control unit that controls the operation of the car and monitors whether there is an abnormality,
A car shock absorber provided at a lower portion of the hoistway, and a suspension abnormality detection device that detects breakage or excessive elongation of the suspension as an abnormality of the suspension,
The suspension abnormality detection device detects whether the degree of abnormality of the suspension is a first level or a second level higher than the first level,
When the first level abnormality occurs in the suspension body, the control unit moves the car to one of the stop floors, stops it, and performs an operation for getting off the passenger, then the car The elevator apparatus which makes a car approach to the said car shock absorber, and stops at a shock absorber proximity stop position.
The elevator apparatus according to claim 3, wherein a distance between the car and the car shock absorber when the car is stopped at the shock absorber proximity stop position is equal to or less than a shock absorbing stroke of the car shock absorber.
A car safety device mounted on the car,
Governor with governor sheave,
A governor rope that is wound around the governor sheave and connected to the car emergency stop device, and that circulates as the cage moves up and down, and the governor rope according to an operation signal Further comprising a governor rope gripping device for gripping
The elevator device according to claim 3 or 4, wherein the control unit inputs an operation signal to the governor rope gripping device after stopping the car at the shock absorber proximity stop position.
The balance weight which is suspended in the said hoistway by the said suspension body, the counterweight which raises / lowers the said hoistway, and the counterweight emergency stop apparatus mounted in the said counterweight are further provided. Elevator equipment.
If the number of the suspended bodies in which an abnormality is detected is detected when the breakage or excessive elongation of the suspension is detected as abnormal, the car is moved to one of the stop floors to stop it, and the governor An elevator apparatus control method for operating a car emergency stop device by gripping a governor rope by a rope gripping device and moving the car downward after a passenger gets off.
If the number of suspensions in which an abnormality is detected is detected when the breakage or excessive elongation of the suspension is detected as abnormal, the car is moved to one of the stop floors and stopped, and the passengers get off. A control method for an elevator apparatus that stops the car after approaching the car shock absorber.