JP6988946B2 - Main rope runout suppression device - Google Patents

Description

The present invention relates to a main rope runout suppression device, and more particularly to a main rope runout suppression device that suppresses main rope runout caused by shaking of a building in which an elevator is installed due to an earthquake or the like.

In recent years, as the height of buildings has increased, the runout of the main rope has become a problem in rope-type elevators when the building shakes due to an earthquake or strong wind.

Rope-type elevators installed in high-rise buildings often have a machine room directly above the upper part of the hoistway of the car, and a hoist that drives the car is installed in the machine room. A main rope is hung on the sheave that forms part of the hoist, and a car is connected to one end of the main rope and a counterweight is connected to the other end, and each is suspended by the main rope. It has been lowered.

Then, by rotating or reversing the sheave by the prime mover, the car guided by the pair of car guide rails laid in the vertical direction is moved up and down.

In an elevator with such a configuration, for example, when a building shakes due to long-period ground motion, the main rope that suspends the car from the top of the building also swings horizontally in almost the same direction as the shaking of the building (hereinafter, this horizontal direction). The runout of the main rope is called "horizontal runout").

Conventionally, the magnitude of the vibration of the main rope is estimated from the magnitude of the vibration of the building detected by the long-period vibration detector installed in the building, and the elevator is according to the degree of the vibration of the main rope. The control operation of the elevator is carried out, and the operation of the elevator is temporarily stopped.

However, there is a problem that the normal operation of the elevator cannot be resumed until the runout of the main rope converges even after the runout of the building has subsided. In addition, when the main rope resonates with the frequency of building shaking caused by an earthquake or strong wind, it is possible that the main rope swings significantly. In such a case, the main rope may come into contact with the equipment installed in the hoistway and be damaged. Further, if the equipment is damaged, repair work by a maintenance person or the like is required, so that there is a problem that it takes a longer period to resume normal operation.

In Patent Document 1, in addition to being connected to a clamp (connector) attached to a main rope, both ends extend diagonally downward from the clamp and are bridged to a pulley fixedly installed at the opposite corners of the upper surface of the car. Disclosed is a runout suppression device for a main rope that vibrates a clamp by pulling a runout suppression rope connected to an actuator in the center of the upper surface of the same surface in a closed state to suppress lateral runout of the main rope. There is.

Japanese Unexamined Patent Publication No. 3-51279

In the runout suppression device described in Patent Document 1, since the actuator pulls the runout suppression rope in a state where the runout suppression rope is stretched over each pulley fixedly installed on the upper surface of the car, the actuator is for runout suppression. When pulling the rope, depending on the swing direction of the main rope, the frictional resistance between the rope and the pulley becomes large, and there is a problem that it is difficult to efficiently suppress the lateral swing of the main rope.

It is an object of the present invention to provide a runout suppressing device for a main rope capable of efficiently suppressing the lateral runout of the main rope when the main rope swings laterally.

The main rope runout suppression device of the present invention is mainly used by pulling the connecting tool attached to the main rope above the car with the runout suppression rope when the main rope for suspending the elevator car is shaken. a pendulum damping apparatus for suppressing the main rope deflection of the rope, pulling together is disposed to face the consolidated instrument, a pulley which is rotatably supported, the suppression rope shake bridged pulley It is provided with a drive unit that suppresses the runout of the main rope.

In the runout suppressing device of the main rope of the present invention, it is preferable that the movable base includes a movable base for supporting the pulley, and the movable base is configured to rotate around a runout suppressing rope extending from the pulley toward the drive unit. ..

Further, in the runout suppressing device of the main rope of the present invention, a movable base for supporting the pulley is included, and the movable base is a shaft having a hollow structure configured so that a runout suppressing rope extending from the pulley toward the drive unit can be inserted. It is preferable to include.
Further, in the runout suppressing device for the main rope of the present invention, it is preferable that the pulleys are arranged so as to be at the same height as the connecting tool.

According to the runout suppressing device of the main rope of the present invention, the pulley on which the runout suppressing rope is laid is rotatably configured. With this configuration, even if the direction in which the runout suppressing rope pulls the main rope changes according to the runout direction of the main rope, the pulley rotates according to the change in the pulling direction of the runout suppression rope. Therefore, the main rope can be pulled smoothly by the driving force of the driving unit. As a result, when the main rope swings laterally, the lateral swing of the main rope can be efficiently suppressed.

It is an overall block diagram of the elevator to which the runout suppression device of a main rope which is one Embodiment of this invention is applied. FIG. 2A is a perspective view of the runout suppressing device of the main rope included in FIG. FIG. 2B is a plan view of the runout suppressing device of the main rope shown in FIG. 2A. FIG. 3 is a side view of the runout suppressing device of the main rope shown in FIG. 2 (a). FIG. 4 is a side view showing the configuration around the pulley and a partially enlarged view of a partial configuration included in the same diagram. FIG. 5A is a diagram showing the operating state of the main rope runout suppressing device when the connecting tool included in the main rope runout suppressing device swings laterally from the origin position in the E1 direction in the same manner as in FIG. 2B. Is. FIG. 5B is a diagram showing the operating state of the main rope runout suppressing device when the connecting tool included in the main rope runout suppressing device swings laterally from the origin position in the E2 direction in the same manner as in FIG. 2B. Is. FIG. 6A is a diagram showing the operating state of the main rope runout suppressing device when the connecting tool included in the main rope runout suppressing device swings laterally from the origin position in the E3 direction in the same manner as in FIG. 2B. Is. FIG. 6B is a diagram showing the operating state of the main rope runout suppressing device when the connecting tool included in the main rope runout suppressing device swings laterally from the origin position in the E4 direction in the same manner as in FIG. 2B. Is.

Hereinafter, the elevator 10 to which the main rope runout suppressing device according to the embodiment of the present invention is applied will be described with reference to the drawings. In each figure, "X" shown in the figure indicates a horizontal direction X substantially parallel to the longitudinal direction of the upper beam 14A-1, and "Y" indicates a horizontal direction Y orthogonal to the horizontal direction X. "Z" indicates the vertical direction Z orthogonal to the horizontal directions X and Y, respectively. Further, if necessary, the horizontal direction X is also referred to as the X direction, and the horizontal direction Y is also referred to as the Y direction.

FIG. 1 is a diagram showing a schematic configuration of an elevator 10. In FIG. 1, the main rope group 12 is shown as one rope for simplification of illustration. As shown in FIG. 1, the elevator 10 is a traction type rope type elevator, and is a main rope group 12 composed of a plurality of main ropes 12-1, 12-2, 12-3, ..., (See FIG. 2). The car frame 14A that supports the car 14 is hung on one end side of the rope, and the counterweight weight 15 is hung on the other end side. A runout suppressing device (hereinafter, referred to as “runout suppressing device”) 30 for the main rope is attached to the car frame 14A. Further, the car 14 is configured to be able to move up and down in the vertical direction Z along a pair of guide rails (not shown) provided on the wall surface of the hoistway 17 corresponding to the car 14. Similarly, the balance weight 15 is also provided so as to be able to move up and down in the vertical direction Z along a pair of guide rails (not shown) provided corresponding to the weight 15.

Further, the car frame 14A has one end of a compensating rope 16 having a function of compensating for an imbalance in weight of a main rope group 12 whose suspended weight varies depending on the elevating position of the car 14 and a traveling cable (not shown). It is connected. The compensating rope 16 is bridged over a tension wheel 19 installed in the pit 17-1 which is the bottom of the hoistway 17, and the other end side is connected to the lower end of the balance weight 15.

The main rope group 12 is bridged over the sheave 18A and the sheave 18B of the hoist 18 installed in the machine room M directly above the hoistway 17, and the sheave 18A is driven by a hoist motor (not shown). It has a function of relatively raising and lowering the car 14 and the counterweight weight 15 by rotating forward or reverse. Further, the machine room M is provided with a control unit 20 that comprehensively controls the operation of the hoisting machine 18 and the like and the operation of the runout suppressing device 30. In the present embodiment, the operation of the runout suppressing device 30 is controlled by the control unit 20 provided in the machine room M, but the present invention is not limited to this. For example, a control unit for controlling the operation of the runout suppression device 30 may be provided on the upper surface 14R of the car 14.

In the following explanation, the part of the main rope group 12 in which the car 14 is suspended is referred to as the car side main rope group 12A, and the part in which the balance weight 15 is suspended is referred to as the balance weight side main rope group 12B. Called according to. According to the above definition, the lengths of the car-side main rope group 12A and the counterweight weight-side main rope group 12B occupying the main rope group 12 vary depending on the elevating position of the car 14. Here, the car-side main rope group 12A shown by the alternate long and short dash line in FIG. 1 schematically shows an example of the state when the car-side main rope group 12A swings sideways (detailed in the latter part).

FIG. 2A is a perspective view of the runout suppression device 30. FIG. 2B is a plan view of the runout suppression device 30. In FIG. 2B, in order to avoid complicated illustration, the illustration of the car-side main rope group 12A below the upper beam 14A-1 and the connector 34 is omitted, and the car-side main rope group is omitted. The cross-section hatching of 12A is omitted. FIG. 3 is a diagram showing a configuration of the runout suppressing device 30 in a side view.

As shown in FIGS. 2A to 3A, in the runout suppressing device 30, the car-side main rope group 12A sways in the horizontal direction (hereinafter, the sway of the car-side main rope group 12A in the horizontal direction is "laterally swayed". In this case, it has a function of suppressing lateral vibration of the main rope group 12A on the car side. The runout suppression device 30 includes a support 32, a connector 34 attached to the car side main rope group 12A located above the car 14, and two runout suppression devices for suppressing lateral runout of the car side main rope group 12A. It includes units 40 and 42.

The support 32 is attached to the upper beam 14A-1 forming a part of the car frame 14A, and is a structure having a substantially square frame shape in the upper surface view provided so as to surround the car side main rope group 12A. ..

As shown in FIGS. 2A to 3, the runout suppression units 40 and 42 are arranged so as to be orthogonal to each other in the top view. Here, since the runout suppression units 40 and 42 have substantially the same configuration, the following description mainly describes only the runout suppression unit 40, and the description of the runout suppression unit 42 will be omitted as appropriate.

As shown in FIGS. 2A to 3, the runout suppressing unit 40 has a function of suppressing the lateral runout of the car-side main rope group 12A via the runout suppressing ropes 52 and 54 connected to the connecting tool 34. Have. Further, the runout suppression unit 40 faces the pulleys 34 with the connecting tool 34 in between, and is mounted on the pulleys 44 and 46 at the same height as the connecting tool 34, and the runout is bridged to both pulleys 44 and 46, respectively. An actuator (driving unit) 48 for applying tension to the restraining ropes 52 and 54 and an elastic unit 49 are provided.

Further, the runout suppression unit 40 applies tension to the rotation mechanisms 60 and 61 that rotatably support both pulleys 44 and 46 and the runout suppression ropes 52 and 54 spanned by both pulleys 44 and 46. The tension applying mechanism 70, 71 and the like are included.

In the following description, since the configurations of the rotation mechanisms 60 and 61 are the same, the configuration of the rotation mechanism 60 will be mainly described, and the description of the rotation mechanism 61 will be omitted as appropriate. Further, since the configurations of the tension applying mechanisms 70 and 71 are the same, the configuration of the tension applying mechanism 70 will be mainly described, and the description of the tension applying mechanism 71 will be omitted as appropriate. Further, in the following description, of the runout suppressing rope 52, the portion located on the connecting tool 34 side with respect to the pulley 44 is referred to as the connecting tool side runout suppressing rope 52A, and is located on the drive actuator 48 side with respect to the pulley 44. This portion is referred to as a drive-side runout suppression rope 52B, if necessary.

Here, FIG. 4 is a diagram showing a configuration around the pulley 44 including the rotation mechanism 60 and the tension applying mechanism 70. As shown in FIG. 4, the rotation mechanism 60 includes a pedestal 62 attached to an upper frame 32-1 constituting a part of the support 32, and a movable pedestal 64 rotatably supported by the pedestal 62. include. The movable pedestal 64 may be rotatably supported by the pedestal 62 via the cylindrical shaft 63. Further, the movable base 64 is provided with a support portion 44-1 that pivotally supports the pulley 44 described above. The pedestal 62 and the movable pedestal 64 are each composed of a plate having a substantially rectangular shape in a plan view.

With the above configuration, the pulley 44 can be rotated according to the position of the connector 34 when the runout suppressing rope 52 pulls the connector 34 (see FIG. 3). Therefore, the force of the actuator 48 pulling the drive-side runout suppressing rope 52B can be efficiently applied to the connecting tool 34 via the connecting tool side runout suppressing rope 52A.

As shown in FIGS. 2A and 2B, the tubular shaft 63 has a hollow structure 63A having a substantially annular shape in a plan view at the center of the shaft, and has a pedestal 62 and a movable base 64 in the thickness direction, respectively. It is attached so as to penetrate through. The cylindrical shaft 63 has a role of rotatably supporting the movable base 64 on the pedestal 62 as shown by the alternate long and short dash line and the alternate long and short dash line in FIG. 2 (b). Further, the drive-side runout suppressing rope 52B is arranged so as to extend from the actuator 48 toward the pulley 44 in a state of being inserted through the tubular shaft 63.

Here, the mounting position of the tubular shaft 63 with respect to the movable base 64 and the pedestal 62 is such that the rope 52B for suppressing the drive side runout exerts tension on the connector 34, and the rope 52B moves from the pulley 44 to the actuator 48. It is preferable to set the hollow structure 63A so as to be positioned so as to extend toward the hollow structure 63A.

As a result, as shown by the alternate long and short dash line and the alternate long and short dash line in FIG. It can be around 52B (see FIG. 2A). Therefore, when the movable base 64 on which the pulley 44 is mounted rotates, the displacement of the drive side runout suppression rope 52B in the horizontal direction is reduced, and the lateral runout of the drive side runout suppression rope 52B accompanying the rotation of the pulley 44 Can be suppressed. As a result, it is possible to prevent the drive-side runout suppressing rope 52B from loosening or falling off from the pulley 44 due to the rotational operation of the pulley 44.

As shown in FIG. 4, the tension applying mechanism 70 is installed on the movable base 64 so as to be closer to the connecting tool 34 than the pulley 44, and the tension applying pulley 72 and the support arm 73 that pivotally supports the pulley 72. And include. The support arm 73 includes a support portion 73-1 fixedly installed on the movable base 64 and a movable arm 73-2 movably attached to the support portion 73-1 along the vertical direction Z. Further, an elastic spring 74 is attached between the movable arm 73-2 and the support portion 73-1. The elastic spring 74 has a function of applying an elastic force to the tension applying pulley 72 via the movable arm 73-2.

The tension applying pulley 72 has a function of urging the connecting tool side runout suppressing rope 52A downward by its own weight and the elastic force of the elastic spring 74. As a result, it is possible to suppress the slackening of the rope 52A for suppressing the runout on the connecting tool side.

Further, as shown in FIG. 4, the tension applying mechanism 70 is provided with a distance detection sensor 80 that detects the displacement of the tension applying pulley 72 in the vertical direction Z. The distance detection sensor 80 is a contact type sensor, and includes a detection piece 82 attached to the side surface of the movable arm 73-2 and a detection unit 84 arranged directly below the detection piece 82. The detection piece 82 is formed so as to extend substantially horizontally and the tip portion 82A bulges downward. On the other hand, the detection unit 84 has a substantially L-shaped external shape in which the upper end portion 84A is bent substantially horizontally so as to be close to the support arm 73.

The upper end portion 84A of the detection unit 84 is installed at a position where the movable arm 73-2 comes into contact with the tip end portion 82A of the detection piece 82 when the movable arm 73-2 descends downward by a distance T from the reference vertical direction position. The reference vertical position of the movable arm 73-2 is such that, for example, the runout suppressing rope 52A is urged downward by using the tension applying pulley 72 in a state where the runout suppressing rope 52 is bridged over the pulley 44. It may be set based on the vertical position of the movable arm 73-2 in the initial state in which the rope 52 is installed, that is, in a state where the runout suppressing rope 52 is not stretched due to aged use.

With the above configuration, it is possible to detect by the distance detection sensor 80 that the position of the tension applying pulley 72 is lowered by the distance T from the reference vertical position. When the distance detection sensor 80 detects the above-mentioned descent of the tension applying pulley 72, the distance detection sensor 80 transmits an abnormality detection signal to the control unit 20 described later.

As a result, it is detected that the position of the tension applying pulley 72 is lowered due to the runout suppressing rope 52 being stretched due to long-term use, or the runout suppressing rope 52 falling off from the pulley 44. can do.

In the present embodiment, the contact-type distance detection sensor 80 is used to detect the vertical position of the tensioning slide 72. For example, a non-contact type distance detection such as an optical displacement sensor or an ultrasonic displacement sensor is used. A sensor may be used.

Further, in the present embodiment, the distance detection sensor 80 transmits an abnormality detection signal when the tension applying pulley 72 descends by the distance T from the reference vertical position, but the tension applying pulley 72 moves up and down at predetermined time intervals. The direction position may be transmitted to the control unit 20. In this case, since the vertical position of the tension applying pulley 72 can be grasped over time, it is possible to confirm the vertical position with higher accuracy.

In the present embodiment, the runout suppressing ropes 52 and 54 are used to pull the car side main rope group 12A, but of these, only the runout suppressing rope 52 is used to pull the car side main rope group 12A. You may. Even in this case, it is possible to suppress the runout of the car-side main rope group 12A by pulling the runout suppressing rope 52 by the actuator 48.

Further, as shown in FIG. 2A, the pulley 44 may be provided with retaining stoppers 44A, 44B, 44C in order to prevent the runout suppressing rope 52 from falling off. As a result, it is possible to more reliably prevent the runout suppressing rope 52 from falling off from the pulley 44. The pulley 46 has the same configuration as the pulley 44.

As shown in FIG. 3, the connecting tool 34 is a plate-shaped member attached to the car-side main rope group 12A at an upper position separated from the upper surface 14R of the car 14 by a preset distance L. Here, it is preferable that the distance L is 0.5 m or more in order to sufficiently obtain the effect of suppressing the lateral vibration of the main rope group 12A on the car side.

On the other hand, from the viewpoint of ensuring safety, the distance between the top of the runout suppression device 30 and the ceiling 17R (see FIG. 1) of the hoistway 17 while stopped (landing) on the top floor is larger than a predetermined value. Since it is necessary to set the distance L to be within 1.9 m, it is preferable. Therefore, it is preferable to set the distance L so as to be within the range of 0.5 m ≦ L ≦ 1.9 m.

Further, the main ropes 12-1, 12-2, 12-3, ... Constituting the main rope group 12A on the car side are connected corresponding to the main ropes 12-1, 12-2, 12-3, .... It is inserted into each of the through holes provided in the tool 34. Here, each of the main ropes 12-1, 12-2, 12-3, ... May be in a state of being movable in the vertical direction Z with respect to the connecting tool 34, or the connecting tool may be made by using a fixing metal fitting such as a bolt. It may be fixed to 34.

As shown in FIG. 2 (b), the runout suppressing ropes 52 and 54 are connected to one end of each of the runout suppressing ropes 52 and 54 via joints 34A and 34B that are rotatable around an axis substantially parallel to the vertical direction Z, respectively. It is preferable to connect to. By using the joints 34A and 34B in this way, the force of bending the ropes 52 and 54 acting on the runout suppressing ropes 52 and 54 when the car side main rope group 12A is swinging sideways is alleviated. can do. A universal joint may be used as the joints 34A and 34B.

Further, the other end of the runout suppressing rope 52 spanning the pulley 44 is connected to an actuator 48 attached to the side surface of the support 32 directly below the pulley 44. As the actuator 48, it is preferable to use a hydraulic or electric actuator. On the other hand, the other end of the runout suppressing rope 54 spanning the pulley 46 is connected to an elastic unit 49 attached to the side surface of the support 32 directly below the pulley 46. An elastic spring (not shown) is stored in the elastic unit 49, and tension is applied to the runout suppressing rope 54 by the elastic force of the spring.

With the above configuration, the connecting tool 34 is pulled in the opposite direction to each other in a direction substantially parallel to the horizontal direction X via the runout suppressing ropes 52 and 54 in a state where the car side main rope group 12A does not swing sideways. Further, the connecting tool 34 is pulled in the opposite direction to each other in a direction substantially parallel to the horizontal direction Y via the runout suppressing ropes 53 and 55. In this way, the connector 34 is held at the origin position P at the center of the support 32 in a state of being pulled in directions substantially parallel to the horizontal direction X and the horizontal direction Y, respectively.

Further, as described above, the actuator 48 and the elastic unit 49 are used to pull the runout suppressing ropes 52 and 54 in opposite directions. Therefore, when the tension acting on the runout suppressing rope 52 changes with the driving of the actuator 48, the tension applied by the elastic unit 49 on the runout suppressing rope 54 on the opposite side also changes accordingly. As a result, when the actuator 48 is driven, there is an advantage that the runout suppressing ropes 52 and 54 are less likely to be loosened or bent.

In the present embodiment, the runout suppression unit 40 includes the elastic unit 49, but instead of the elastic unit 49, an actuator having the same configuration as the actuator 48 may be provided. In this case, the same effect as that of the present embodiment can be obtained by pulling the runout suppressing rope 54 by the actuator.

The actuator 48 is attached to the side surface of the support 32 and has a function of pulling the runout suppressing rope 52 when the car side main rope group 12A swings sideways. As described above, by attaching the actuator 48 to the side surface of the support 32 instead of the upper surface 14R of the car 14, the driving sound of the actuator 48 can be hardly transmitted to the inside of the car 14.

The control unit 20 (see FIG. 1) includes an abnormality detection lamp 22A for notifying an abnormality of the runout suppression unit 40. The control unit 20 turns on the abnormality detection lamp 22A when the abnormality detection signal of the distance detection sensor 80 described above is received. As a result, it is possible to notify the abnormality of the runout suppression unit 40 at the time of maintenance and inspection and urge the maintenance staff to perform the inspection.

Further, the control unit 20 detects the runout of the car side main rope group 12A via a plurality of rope runout detection sensors (not shown) installed in the hoistway 17, and the car side main rope is based on the detection result. The operation of the runout suppression device 30 is controlled so as to suppress the lateral runout of the group 12A. More specifically, the control unit 20 causes the shake suppression units 40 and 42 to generate a reflected wave that cancels the incident wave with respect to the incident wave that is the lateral shake of the main rope group 12A on the car side caused by the shaking of the building. It is conceivable to vibrate the main rope group 12A on the car side, in other words, to control the rope so that it swings sideways. As a result, the lateral runout of the main rope group 12A on the car side can be suppressed.

As for the operation control of the runout suppressing device 30 in the control unit 20, an operation pattern suitable for suppressing the lateral runout of the main rope group 12A on the car side may be calculated and used in advance by using simulation or the like. In addition, an appropriate operation pattern for suppressing the lateral runout of the car side main rope group 12A is experimentally calculated by operating the runout suppression device 30 in a state where the car side main rope group 12A is actually shaken. You may try to do it.

In the present embodiment, the control unit 20 has the maximum runout width of the car side main rope group 12A in the vertical direction Z based on the position information of the car side main rope group 12A acquired from the rope runout detection sensor (not shown). Determine the position to be. Then, the control unit 20 calculates the X and Y direction components of the runout width of the rope group 12A at the position where the runout width is maximum, respectively, and the runout suppression device 30 is based on the magnitude of the X and Y direction components. Control the drive of.

More specifically, the control unit 20 controls the drive of the runout suppression unit 40 based on the X-direction component described above, and also controls the drive of the runout suppression unit 42 based on the Y-direction component described above. In this way, the X-direction component and the Y-direction component of the lateral runout of the car-side main rope group 12A are separately suppressed by the runout suppression units 40 and 42, respectively.

Next, operation control for the runout suppression units 40 and 42 in the control unit 20 will be described with reference to FIGS. 5 (a) and 5 (b). FIG. 5A is a diagram showing a state in which the car-side main rope group 12A swings laterally in a direction away from both actuators 48 and 58, whereas FIG. 5B is a diagram showing FIG. 5A. It is a figure which shows the state which the car side main rope group 12A shook sideways in the opposite side, that is, in the direction which approaches both actuators 48, 58. In FIGS. 5 (a) and 5 (b), the above-mentioned origin position P is indicated by a one-dot chain line.

Since the operation control for each of the runout suppression units 40 and 42 is almost the same, the operation control for the runout suppression unit 40 will be mainly described below, and the description of the runout suppression unit 42 will be omitted as appropriate.

Here, as shown in FIGS. 5A and 5B, the car-side main rope group 12A swings laterally from the origin position P in the E1 direction to reach the position P1, and at the position P1, the swing direction is E2. It is assumed that the vehicle changes in the direction, passes through the origin position P again, reaches the position P2 on the opposite side, and at the position P2, the swing direction changes in the E1 direction and swings toward the origin position P. Further, the area between the origin position P and the position P1 is defined as the area A, and the area between the origin position P and the position P2 is defined as the area B.

Further, the tension in which the elastic unit 49 pulls the runout suppressing rope 54 is Ts, and the tension in which the actuator 48 pulls the runout suppressing rope 52 is Ta. In the present embodiment, the magnitude of the tension in the X direction is such that the tension Ts acting on the runout suppressing rope 54 is sufficiently larger than the tension acting on the runout suppressing ropes 53 and 55, so that the runout suppressing rope 54 The tension Ta acting on the runout suppressing rope 52 is set in consideration of only the tension Ts acting on the rope.

As shown in FIG. 5A, in the present embodiment, the rope runout detection sensor (not shown) detects the runout of the main rope group 12A on the car side, and the control unit 20 controls the drive of the actuator 48. More specifically, when the connector 34 swings laterally in the region A, the control unit 20 may control the drive of the actuator 48 so that Ts ≧ Ta.

On the other hand, as shown in FIG. 5B, when the connector 34 swings laterally in the region B, the control unit 20 may control the drive of the actuator 48 so that Ta ≧ Ts. Further, at this time, it is preferable to control the drive of the actuator 48 so that the tension Ta becomes the maximum tension at the position P2 in order to suppress the lateral vibration of the car side main rope group 12A at an early stage.

Further, the operation control for the runout suppression units 40 and 42 in the control unit 20 will be described with reference to FIGS. 6 (a) and 6 (b). FIG. 6A is a diagram showing a state in which the main rope group 12A on the car side swings laterally in a direction approaching the actuator 58 and the elastic unit 49, and FIG. 6B is a diagram showing a state in which the actuator 58 and the elastic unit 49 on the opposite side swing. It is a figure which shows the state which the car side main rope group 12A shook sideways in the direction away from. In FIGS. 6 (a) and 6 (b), the above-mentioned origin position P is indicated by a one-dot chain line.

As shown in FIGS. 6A and 6B, the car-side main rope group 12A swings laterally from the origin position P in the E3 direction to reach the position P3, and the swing direction changes in the E4 direction at the position P3. Then, it passes through the origin position P again and reaches the position P4, and at the position P4, the runout direction changes in the E3 direction and the sideways shakes toward the origin position P. Here, the area between the origin position P and the position P3 is defined as the area C, and the area between the origin position P and the position P4 is defined as the area D.

As shown in FIG. 6A, when the connector 34 is oscillating in the region C, the control unit 20 drives the actuator 48 so that Ts ≧ Ta as in the case of the region A. Should be controlled. On the other hand, as shown in FIG. 6B, when the connector 34 swings laterally in the region D, the control unit 20 controls the actuator 48 so that Ta ≧ Ts as in the case of the region B. It suffices to control the drive of. Further, at this time, it is preferable to control the drive of the actuator 48 so that the tension Ta becomes the maximum tension at the position P4 in order to suppress the lateral vibration of the car side main rope group 12A at an early stage.

In the present embodiment, the magnitude of the tension Ta that the actuator 48 acts on the runout suppression rope 52 is set in consideration of the magnitude of the tension Ts of the runout suppression rope 54, but the tension Ts is multiplied by a correction coefficient. The tension Ta may be set in consideration of the magnitude relationship with the correction value obtained. Further, the actuator 48 suppresses runout based on the magnitude relationship between the component force in the X direction of the tension Ts of the runout suppression rope 54 and the sum of the component forces in the X direction of the tension of the runout suppression rope 53. The tension Ta acting on the rope 52 may be set.

According to the runout suppressing device 30 of the main rope of the present embodiment, the pulley 44 over which the runout suppressing rope 52 is bridged is configured to be rotatable. With this configuration, even if the direction in which the runout suppressing rope 52 pulls the car side main rope group 12A changes according to the runout direction of the main rope 12, the pulley 44 rotates according to the change in the pulling direction of the runout suppression rope 52. Move. Therefore, the driving force of the actuator 48 can smoothly pull the car-side main rope group 12A via the runout suppressing rope 52. As a result, when the car-side main rope group 12A swings laterally, the lateral swing of the car-side main rope group 12A can be efficiently suppressed.

In this embodiment, an example of suppressing the lateral runout of the car-side main rope group 12A by arranging the runout suppression units 40 and 42 orthogonally is given, but only one of the runout suppression units 40 and 42 is used. It may be prepared. Even in this case, it is possible to suppress the lateral vibration of the main rope group 12A on the car side.

The present invention can also be carried out in a mode in which various improvements, modifications, or modifications are made based on the knowledge of those skilled in the art without departing from the spirit of the present invention. Further, within the range in which the same action or effect is produced, any of the invention-specific matters may be replaced with another technique.

10 Elevator 12 Main rope group 12-1, 12-2, 12-3 Main rope 12A Car side main rope group 12B Balanced weight side main rope group 14 Riding car 14A Car frame 14A-1 Upper beam 30 Runout suppression device (main) Rope runout suppression device)
32 Support 34 Coupling 34A, 34B Fittings 44, 45, 46 Pulleys 48, 58 Actuator (drive unit)
49 Elastic unit 52, 53, 54, 55 Rope for suppressing runout 60, 61 Rotation mechanism 62 Pedestal 63 Cylindrical shaft 64 Movable pedestal 70, 71 Tension application mechanism 72 Tension application pulley 73 Movable arm 73-1 Support part 73-2 Movable arm 74 Elastic spring 80 Distance detection sensor 82 Detection piece 84 Detection unit P Origin position P1, P2, P3, P4 Position X, Y Horizontal direction Z Vertical direction

Claims (4)

When the main rope that suspends the elevator car is shaken, the main rope that suppresses the runout of the main rope by pulling the connector attached to the main rope above the car with the runout suppressing rope. It is a runout suppression device
A pulley that is arranged so as to face the connector and is rotatably supported.
A drive unit that suppresses the runout of the main rope by pulling the runout suppressing rope that is hung over the pulley.
A main rope runout suppression device characterized by being equipped with. Including a movable base that supports the pulley,
The movable base is configured to rotate around the runout suppressing rope extending from the pulley toward the drive unit.
The runout suppressing device for the main rope according to claim 1. Including a movable base that supports the pulley,
The movable base includes a shaft having a hollow structure configured to allow the runout suppressing rope extending from the pulley toward the drive unit to be inserted.
The runout suppressing device for the main rope according to claim 1. The pulley is arranged so as to be at the same height as the connector.
The runout suppressing device for the main rope according to any one of claims 1 to 3.

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