JP6710549B2 - Tensioning device for interlocking ropes for elevator hall doors - Google Patents

Description

The present invention relates to a tension applying device that applies tension to an interlocking rope that interlocks an opening/closing operation of one hall door among the hall doors of an elevator hall.

The hall doors installed in the elevator halls are configured such that one hall door is opened and closed following the car doors when the car stops at the hall floor. The other landing door is configured to interlock with the opening/closing operation of the one landing door via an interlocking rope. This interlocking rope gradually extends due to repeated opening and closing operations of the landing door, and eventually slackens. Therefore, at the time of maintenance and inspection of the elevator, work is performed to check whether the interlocking rope is stretched. Then, when the extension of the interlocking rope is large, the rope length of the interlocking rope is adjusted and the interlocking rope is replaced to prevent abnormal opening of the landing door.

Patent Document 1 discloses a tension applying device in which a spring is attached to a terminal portion of the interlocking rope in order to prevent the interlocking rope from being loosened, and a tension is applied to the interlocking rope by the elastic force of the spring.

JP, 2010-265105, A

However, in the tension applying device described in Patent Document 1, since the elastic force of the spring is used to apply the tension to the interlocking rope, it is not possible to apply a constant tension corresponding to the extension of the interlocking rope. That is, when the length of the rope is small and the total length of the rope is short, not only a large elastic force acts on the interlocking rope, but also the elastic force warps the extension of the interlocking rope.

An object of the present invention is to provide a tension applying device for an interlocking rope for an elevator landing door that can prevent the interlocking rope from being loosened by reducing the elongation of the interlocking rope by applying a constant tension to the interlocking rope.

An elevator hall door interlocking rope tensioning device according to an aspect of the present invention, among the hall doors installed in the elevator hall, one hall door is provided so as to open and close following the car door, In a tensioning device for an interlocking rope in an elevator landing door that opens and closes in an interlocking rope with the other landing door, a pulley pair having two pulleys that contact the interlocking rope and the pulleys are pressed against the interlocking rope to form the interlocking rope. A tension applying mechanism that applies tension, a detection unit that detects the pressing force applied to the interlocking rope by the pulley , a control unit that controls the tension applying mechanism so that the pressing force has a preset value, and a pulley pair. An elongated swing arm pivotally supported at both ends, and a drive unit for rotationally driving the swing arm, the drive unit including a motor having a drive shaft fixed to the center of the swing arm. Is.

An elevator hall door interlocking rope tensioning device according to another aspect of the present invention, among the hall doors installed in the elevator hall, one hall door is provided so as to open and close following the car door, In a tensioning device for an interlocking rope in an elevator landing door that opens and closes in an interlocking rope with the other landing door, a pulley pair having two pulleys that contact the interlocking rope and the pulleys are pressed against the interlocking rope to form the interlocking rope. A tension applying mechanism that applies tension, a detection unit that detects the torque that the tension applying mechanism applies to the interlocking rope via the pulley, and a tension applying mechanism that applies the tension to the interlocking rope based on the torque detected by the detection unit. The control unit that calculates the pressing force and controls the tension applying mechanism so that the pressing force becomes a preset value, the elongated swinging arm that pivotally supports the pulley pair at both ends, and the swinging arm is rotationally driven. And a drive unit for operating the drive unit, the drive unit including a motor having a drive shaft fixed to a central portion of the swing arm .

An elevator hall door interlocking rope tensioning device according to another aspect of the present invention, among the hall doors installed in the elevator hall, one hall door is provided so as to open and close following the car door, In a tension applying device for an interlocking rope in an elevator landing door that interlocks this opening/closing operation with the other landing door, a pair of pulleys having two pulleys in contact with the interlocking rope and the interlocking rope by pressing the pulleys to the interlocking rope. The tension applying mechanism that applies tension to the, the detecting unit that detects the vertical position of the interlocking rope, and the tension applying mechanism so that the position of the interlocking rope detected by the detecting unit is the preset vertical position. The drive unit includes a control unit for controlling, an elongated swing arm that pivotally supports the pair of pulleys at both ends, and a drive unit that rotationally drives the swing arm. The drive unit is a drive unit fixed to the center of the swing arm. It includes a motor having a shaft .

Elevator landing door interlocking rope tensioning device according to a further aspect of the present invention, among the landing doors installed in the elevator landing, one landing door is provided so as to open and close following the car door, In the tensioning device for the interlocking rope in the elevator landing door that interlocks this opening/closing operation with the other landing door, the pulley that contacts the interlocking rope and the tension that applies tension to the interlocking rope by pressing the pulley against the interlocking rope. The applying mechanism, the detecting unit that detects the pressing force applied to the interlocking rope by the pulley, the control unit that controls the tension applying mechanism so that the pressing force has a preset value, the motor, and the drive shaft of the motor. A pinion gear that is fixed and a rack gear that is driven by a motor via the pinion gear are provided, and the pulley is rotatably supported by the upper end portion of the rack gear. An elevator hall door interlocking rope tensioning device according to another further aspect of the present invention is provided so that one of the hall doors installed in the elevator hall is opened and closed in accordance with the car door. In the tension applying device for the interlocking rope in the elevator landing door that interlocks this opening/closing operation with the other landing door, the pulley that contacts the interlocking rope and the pulley is pressed against the interlocking rope to apply tension to the interlocking rope. Tensioning mechanism, a detection unit that detects the vertical position of the interlocking rope, and a control unit that controls the tensioning mechanism so that the position of the interlocking rope detected by the detection unit is a preset vertical position. A motor, a pinion gear fixed to the drive shaft of the motor, and a rack gear driven by the motor via the pinion gear.The pulley is rotatably supported on the upper end of the rack gear. is there. Tensioning device for an elevator hall door for interlocking rope according to the invention, the tensioning device according to any of the above, control section, when the rotation amount of the motor has reached the size set in advance, in conjunction It is preferable to notify the abnormality of the rope.

According to the tension applying device for the interlocking rope for elevator hall doors according to one aspect of the present invention, the tension applying mechanism is controlled so that the pressing force applied to the interlocking rope by the tension applying mechanism via the pulley has a preset value. can do. Therefore, a certain amount of tension can be applied to the interlocking rope via the tension applying mechanism. Accordingly, it is possible to apply tension to the interlocking rope and prevent the interlocking rope from slackening while reducing unnecessary elongation of the interlocking rope.

According to the tension applying device for the interlocking rope for elevator hall doors according to another aspect of the present invention, the pressing force applied by the tension applying mechanism to the interlocking rope is calculated based on the torque detected by the detection unit, and the pressing force is calculated. It is possible to control the tension applying mechanism so that is a preset value. Therefore, a certain amount of tension can be applied to the interlocking rope via the tension applying mechanism. Accordingly, it is possible to apply tension to the interlocking rope and prevent the interlocking rope from slackening while reducing unnecessary elongation of the interlocking rope.

According to the tensioning device for the elevator hall door interlocking rope according to another aspect of the present invention, the tensioning mechanism is provided so that the vertical position of the interlocking rope detected by the detection unit becomes a preset vertical position. Can be controlled. Thereby, a certain amount of tension can be applied to the interlocking rope via the tension applying mechanism. Accordingly, it is possible to apply tension to the interlocking rope and prevent the interlocking rope from slackening while reducing unnecessary elongation of the interlocking rope.

1 is an overall configuration diagram of an elevator to which a tension applying device for an elevator landing door interlocking rope according to a first embodiment of the present invention is applied. It is a figure which shows the structure of the hall door shown in FIG. FIG. 3A is a front view of a tension applying mechanism included in the tension applying device, and FIG. 3B is a diagram showing a configuration of the tension applying mechanism in a top view. FIG. 4A shows the rotation operation of the tension applying mechanism when there is almost no extension of the interlocking rope, and FIG. 4B shows the rotation operation of the tension applying mechanism when the interlocking rope is slightly extended. (C) is a figure which shows the rotation operation of the tension|tensile_strength provision mechanism when the expansion of an interlocking rope becomes large. FIG. 5A is a diagram showing a tension applying device which is a modified example of the first embodiment of the present invention, and FIG. 5B is a sectional view taken along line BB shown in FIG. 5A. FIG. 6 is a side view of the tension applying mechanism viewed from the direction C shown in FIG. It is a figure which shows the structure in top view of the tension|tensile_strength provision mechanism contained in the tension|tensile_strength provision apparatus which is 2nd Embodiment of this invention. It is a figure which shows the structure of the tension|tensile_strength provision apparatus which is 3rd Embodiment of this invention.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings. In this description, specific shapes, materials, numerical values, directions, etc. are merely examples for facilitating understanding of the present invention, and can be appropriately changed according to applications, purposes, specifications, and the like. Further, when a plurality of embodiments and modifications are included in the following, it is assumed from the beginning that the characteristic portions are appropriately combined and used.

FIG. 1 is an overall configuration diagram of an elevator 10 to which a tensioning device for an elevator landing door interlocking rope according to a first embodiment of the present invention is applied. As shown in FIG. 1, the elevator 10 includes a car 12 that moves up and down the hoistway 11, and a hoisting machine 13 that moves the car 12 up and down. The car 12 includes an operation panel 14 provided with destination floor buttons and the like, and a car door 15. At the halls H1 to H3 on each floor, hall doors 21, 22, and 23 are provided so as to face the car door 15. The hoisting machine 13 is installed in the machine room M just above the hoistway 11 and hoists the car 12 through the main rope 18. In the machine room M, a control unit 20 that controls the operation of the car 12 is installed. The control unit 20 rotationally drives the hoisting machine 13 based on the operation of the car call buttons 22a, 22b, 22c and the destination floor buttons of the car 12 installed in each floor hall H1 to H3, and thereby the car 12 is rotated. Raise and lower. The control unit 20 also constitutes a part of a tension applying device described later.

FIG. 2 is a diagram showing the structure of the hall door 23. As shown in FIG. 2, the hall door 23 is a left-right double-door type door including a right door 24 and a left door 26. Since the doors 24 and 26 have the same configuration, the configuration of the right door 24 will be described below, and the description of the left door 26 will be omitted as appropriate. The right door 24 is suspended via a door hanger 29 on a hanger rail 28 installed immediately above the entrance/exit. The door hanger 29 is a plate-shaped member attached to the upper part of the right door 24. The door hanger 29 has rotating rollers 29a and 29b at both left and right ends, and is movably supported by the hanger rail 28 via the rotating rollers 29a and 29b. Further, the right door 24 is provided with an engaging portion 24a with which a driving projection (not shown) of the car door 15 is engaged. This allows the right door 24 to be opened/closed in conjunction with the opening/closing operation of the car door 15 in a state where the car 12 is stopped at a position facing the hall door 23. Further, the right door 24 is provided with an interlock mechanism 30. The interlock mechanism 30 has an engagement arm 30a attached to the door hanger 29, and an engagement portion 30b installed immediately above the center of the entrance/exit. The interlock mechanism 30 prevents abnormal opening of the right door 24 by engaging the engaging arm 30a with the engaging portion 30b when the car 12 is not stopped at a position facing the right door 24. Have a role.

As shown in FIG. 2, an interlocking mechanism 32 that interlocks the left door 26 with the opening/closing operation of the right door 24 is provided immediately above the hall door 23. The interlocking mechanism 32 is composed of return wheels 34a, 34b arranged immediately above the left and right ends of the hanger rail 28, and an interlocking rope 35 suspended in a loop between the return wheels 34a, 34b. .. The return wheels 34a and 34b are rotatably supported on the wall surface 11a. Further, the right door 24 is connected to the upper portion 35a of the interlocking rope 35 that is looped between the return wheels 34a and 34b via a plate-like connecting metal fitting 36a attached to the door hanger 29. There is. Similarly, the left door 26 is connected to the lower portion 35b of the interlocking rope 35 via a connecting fitting 36b. With the above configuration, the left door 26 can be interlocked and moved in the direction opposite to the opening/closing direction of the right door 24.

Further, as shown in FIG. 2, the connecting fitting 36a of the right door 24 is provided with a detecting portion 37 which constitutes a part of a tension applying device described later. The detection unit 37 includes, for example, a pressure sensor including a load cell, and is interposed between the coupling fitting 36a and the interlocking rope 35. The detection unit 37 has a function of detecting the tension of the interlocking rope 35, in other words, detecting the pressing force acting on the interlocking rope 35. The detection unit 37 is electrically connected to the control unit 20 by wire or wireless connection. Further, a pressure sensor composed of a film-shaped piezoelectric element may be attached to a contact surface of the return wheel 34a with the interlocking rope 35 to be used as a detection unit.

The right door 24 has slide shoes 38a and 38b attached to both lower ends thereof. The slide shoes 38a and 38b are attached so as to be slidable along the threshold groove 39, and have a function of suppressing the swing of the right door 24 when the right door 24 is opened and closed.

As shown in FIG. 2, the tension applying device 40 is attached to the upper portion 35a of the interlocking rope 35 adjacent to the return wheel 34a and has a function of applying a constant tension to the interlocking rope 35. The tension applying device 40 includes a pair of pulleys 42a and 42b that are in contact with the interlocking rope 35, and a tension applying mechanism that is fixedly supported by a wall surface 11a that presses the pair of pulleys 42a and 42b against the interlocking rope 35 to apply tension to the interlocking rope 35. 45 and.

Subsequently, the configurations of the pulley pairs 42a and 42b and the tension applying mechanism 45 will be described with further reference to FIGS. 3(a) and 3(b). FIG. 3A is a front view of the pulley pair 42a, 42b and the tension applying mechanism 45, and FIG. 3B is a diagram showing a configuration of the pulley pair 42a, 42b and the tension applying mechanism 45 in a top view. As shown in FIGS. 3(a) and 3(b), in the pulley pairs 42a and 42b, the outer peripheral groove with which the interlocking rope 35 comes into contact is formed in a substantially U shape, and the left pulley 42a is from below. The interlocking rope 35 is contacted, and the pulley 42b on the right side is arranged so as to contact the interlocking rope 35 from above. This allows the interlocking rope 35 to be pressed to bend the interlocking rope 35 into a substantially S-shape.

As shown in FIGS. 3A and 3B, the tension applying mechanism 45 rotates the swinging arm 46 and a slender substantially rectangular parallelepiped swinging arm 46 that pivotally supports the pulley pairs 42a and 42b at both ends. It has the drive part 47 which drives. The drive unit 47 has a substantially cylindrical outer shape and is fixed to the wall surface 11 a of the hoistway 11. The drive unit 47 includes a motor 48 having a drive shaft 48a fixed to the center of the swing arm 46. The motor 48 has a function of rotating the swing arm 46 in the rotation direction A, which is a direction in which the pair of pulleys 42a and 42b is pressed against the interlocking rope 35, or in the opposite direction. As the motor 48, it is preferable to use, for example, a stepping motor with a magnetic brake. As a result, even if an external force acts on the drive shaft 48a in the case of a non-energized state such as a power failure, the rotational position of the drive shaft 48a is maintained because the magnetic brake is operating when the power is not energized. Therefore, the rotational position of the swing arm 46 can be accurately maintained even in the event of a power failure or the like.

Further, the tension applying device 40 includes the control unit 20 and the detection unit 37 (see FIG. 2) described above. The control unit 20 controls the tension applying mechanism 45 so that the pressing force of the pulley pair 42a, 42b detected by the detection unit 37 becomes a preset value. More specifically, the control unit 20 rotationally drives the motor 48 included in the tension applying mechanism 45 to adjust the positions of the pulley pairs 42a and 42b so that the pressing force becomes a preset value. The rotation of the motor 48 is controlled. That is, if the pressing force detected by the detection unit 37 is smaller than the preset value, the control unit 20 controls the rotation direction A shown in FIG. 3A until the pressing force detected by the detection unit 37 reaches the preset value. Then, the swing arm 46 is rotated. On the contrary, if the pressing force detected by the detection unit 37 is larger than the preset value, the control unit 20 reverses the rotation direction A until the pressing force detected by the detection unit 37 reaches the preset value. The swing arm 46 is rotated. In this way, the pressing force applied to the interlocking rope 35 by the pair of pulleys 42a and 42b can be kept constant.

Further, it is preferable that the control unit 20 sends an abnormality signal notifying the abnormality of the interlocking rope 35 to the elevator management center 43 (see FIG. 2) when the rotation amount of the motor 48 reaches a preset value. .. As a result, the interlocking rope 35 having a large elongation can be quickly replaced with a new one.

Next, the operation of the tension applying device 40 will be described with reference to FIGS. 4(a) to 4(c). FIG. 4A shows the rotating state of the tension applying mechanism 45 when the interlocking rope 35 is almost unextended, and FIG. 4B shows the rotating state of the tension applying mechanism 45 when the interlocking rope 35 is slightly extended. FIG. 11C is a diagram showing a rotating state of the tension applying mechanism 45 in a state where the interlocking rope 35 is greatly expanded and the replacement timing is approaching. As shown in FIG. 4A, the tension applying device 40 holds the swing arm 46 at a position slightly rotated in the rotation direction A when the interlocking rope 35 is hardly stretched. That is, the pressing force detected by the detection unit 37 becomes a preset value by merely pressing the pulley pair 42a, 42b against the interlocking rope 35. Therefore, although the interlocking rope 35 is pressed by the pair of pulleys 42a and 42b, the interlocking rope 35 is held in a substantially linear shape. As described above, in a state where the interlocking rope 35 is hardly stretched, an unnecessary large pressing force does not act on the interlocking rope 35, so that unnecessary extension of the interlocking rope 35 is suppressed.

However, as shown in FIGS. 4B and 4C, in the tension applying device 40, when the extension of the interlocking rope 35 gradually increases, the tensioning device 40 moves the swing arm 46 in the rotating direction in response to the extension. Rotate to A. As a result, the interlocking rope 35 is curved in a substantially S-shape according to the amount of extension of the interlocking rope 35 to absorb the extension of the interlocking rope 35, and a certain amount of pressing force is interlocked via the pulley pairs 42a and 42b. It can act on the rope 35. Then, as shown in FIG. 4C, when the rotation amount of the motor 48 reaches a preset value, an abnormal signal is transmitted to the management center 43. As a result, it is possible to promote replacement of the interlocking rope 35 having a large amount of extension.

According to the tension imparting device 40 for the interlocking rope for elevator hall doors according to the present invention, the tension is applied so that the tension imparting mechanism 45 exerts a pressing force on the interlocking rope 35 via the pulley pairs 42a and 42b to a preset value. The application mechanism 45 can be controlled. Therefore, a constant amount of tension can be applied to the interlocking rope 35 via the tension applying mechanism 45. As a result, it is possible to apply tension to the interlocking rope 35 and prevent the interlocking rope 35 from being loosened while reducing unnecessary elongation of the interlocking rope 35.

Next, a tension applying device 50 which is a modified example of the first embodiment will be described with reference to FIGS. FIG. 5A is a diagram showing the configuration of the tension applying device 50. FIG. 5B is a partially enlarged view of the BB cross section shown in FIG. FIG. 6 is a side view of the tension applying mechanism 52 viewed from the direction C shown in FIG. In FIG. 6, the interlocking rope 35 and the supporting roller are not shown. In the following description, description of portions having the same configuration as the tension applying device 40 of the first embodiment will be omitted as appropriate, and only portions having different configurations will be described.

As shown in FIGS. 5A, 5B, and 6, the tension applying device 50 includes a tension applying mechanism 52 in place of the tension applying mechanism 45 in the first embodiment. The tension applying mechanism 52 includes two support rollers 54a and 54b that support the interlocking rope 35 from below, and a pulley 55 that is disposed between the support rollers 54a and 54b and that contacts the interlocking rope 35 from above. There is. Each of the support rollers 54a and 54b is pivotally supported by a support shaft protruding from the wall surface 11a. The pulley 55 is rotatably supported on the upper end of the rack gear 66.

The tension applying mechanism 52 includes a box-shaped housing 56 for housing the motor 48, a pinion gear 65 fixed to a drive shaft 48 a of the motor 48, and a rack gear 66 driven by the motor 48 via the pinion gear 65. Have The housing 56 has substantially L-shaped brackets 58a and 58b on both upper and lower surfaces, and is fixed to the wall surface 11a of the hoistway 11 by bolts 59a and 59b inserted into the brackets 58a and 58b. A substantially U-shaped support fitting 61 is attached to the surface of the housing 56 opposite to the wall surface 11a. Through holes 62 and 64 are provided on both upper and lower sides of the support fitting 61, and a rack gear 66 is inserted into the through holes 62 and 64 so as to be vertically movable. Since the configurations of the through holes 62 and 64 are the same, only the through hole 62 on the upper surface will be described below. As shown in FIG. 5B, the through hole 62 is formed in a substantially rectangular shape, and guide protrusions 62a and 62b are provided on the side of the housing 56 and the opposite side thereof. The guide protrusions 62a and 62b have a guide function of engaging a guide groove of a rack gear 66 described later to guide the rack gear 66 in the vertical direction.

The pinion gear 65 has a gear portion 65a formed along the outer periphery thereof. On the other hand, in the rack gear 66, a gear portion 66a that meshes with the gear portion 65a of the pinion gear 65 is formed on the surface facing the pinion gear 65 along the longitudinal direction. Further, the rack gear 66 is provided with guide grooves 66b and 66c, which are engaged with the guide protrusions 62a and 62b of the through hole 62 of the support fitting 61, along the longitudinal direction. As a result, the rack gear 66 can be moved in the vertical direction as the pinion gear 65 rotates in the rotation direction D or the opposite direction.

With the above structure, the pressing force applied to the interlocking rope 35 via the pulley 55 can be adjusted by moving the rack gear 66 in the vertical direction as the motor 48 rotates.

Subsequently, the tension applying devices according to the second and third embodiments of the present invention will be sequentially described with reference to FIGS. 7 and 8. In the following description, the same components as those of the tension applying device 40 of the first embodiment will be designated by the same reference numerals, and the description thereof will be omitted as appropriate, and only the different configuration will be described.

Similar to FIG. 3B, FIG. 7 is a diagram showing the configurations of the pulley pairs 42a and 42b and the tension applying mechanism 75 included in the tension applying device 70 according to the second embodiment of the present invention in a top view. The tension applying device 70 includes a tension applying mechanism 75 instead of the tension applying mechanism 45 in the first embodiment. The tension applying mechanism 75 includes a drive unit 77 instead of the drive unit 47, and the other configurations are similar to those of the tension applying mechanism 45. The drive unit 77 is fixed to the wall surface 11 a of the hoistway 11 and includes a motor 78 having a drive shaft 78 a fixed to the center of the swing arm 46. The motor 78 has the same configuration as the motor 48. The drive unit 77 is provided with a detection unit 79 that detects a torque that acts on the drive shaft 78a of the motor 78, in other words, a torque that the tension applying mechanism 75 exerts on the interlocking rope 35 via the pair of pulleys 42a and 42b. Has been. The control unit 20 calculates the pressing force applied to the interlocking rope 35 by the tension applying mechanism 75 based on the torque detected by the detecting unit 79, and the first pressing force is set so that the pressing force becomes a preset value. The tension applying mechanism 75 is controlled similarly to the case of the tension applying mechanism 45 in the embodiment. Thereby, the pressing force applied to the interlocking rope 35 by the pair of pulleys 42a and 42b can be kept constant.

According to the tension applying device 70, the pressing force applied to the interlocking rope 35 by the tension applying mechanism 75 is calculated based on the torque detected by the detecting unit 79, and the tension is adjusted so that the pressing force becomes a preset value. The application mechanism 75 can be controlled. Therefore, a constant amount of tension can be applied to the interlocking rope 35 via the tension applying mechanism 75.

FIG. 8: is a figure which shows the structure of the tension|tensile_strength provision apparatus 80 which is 3rd Embodiment of this invention. The tension applying device 80 includes a detecting unit 81 instead of the detecting unit 37 in the first embodiment, and the other configurations are the same as the tension applying device 40. The detection unit 81 is a position detection sensor that is installed on the wall surface 11 a so as to be close to the lower portion 35 b of the interlocking rope 35 and detects the vertical position of the interlocking rope 35. The detection unit 81 is configured by a photoelectric sensor using infrared rays or the like, a magnetic sensor using magnetism, or the like. The control unit 20 controls the tension applying mechanism 45 so that the position of the interlocking rope 35 detected by the detection unit 81 becomes a preset vertical position. That is, when the position of the interlocking rope 35 detected by the detection unit 81 is lower than the preset vertical position, the swing arm is moved in the rotation direction A (see FIG. 3A) until the preset vertical position is reached. Rotate 46. On the contrary, when the position of the interlocking rope 35 detected by the detection unit 81 is higher than the preset vertical position, the swing arm 46 is rotated in the opposite direction until the preset vertical position is reached. As a result, a certain amount of tension can be applied to the interlocking rope 35 via the tension applying mechanism 45.

In addition, according to the tension imparting device for the elevator rope door interlocking rope according to the present invention, it is not limited to the configurations of the above-described embodiment and its modifications, and the matters described in the claims of the present application and It goes without saying that various improvements and changes can be made within the range of equivalents.

10 elevator, 20 control part, 21, 22, 23 hall door, 24 right door, 26 left door, 35 interlocking rope, 36a, 36b connecting metal fitting, 37, 79, 81 detection part, 40, 50, 70, 80 tension application Equipment, 42a, 42b, 55 pulleys, 45, 52, 75 tension applying mechanism, 48 motors, H1, H2, H3 hall.

Claims (5)

Of the installed hall door elevator hall is provided so as to open and close by being driven by the car door ride is one of the hall door, the interlocking in the elevator hall doors to synchronize with the other hall door by the opening and closing operation interlocking rope In the rope tensioning device ,
A pulley pair having two pulleys in contact with the interlocking rope,
A tension applying mechanism for applying tension to the interlocking rope by pressing the pulley against the interlocking rope,
A detection unit that detects a pressing force applied to the interlocking rope by the pulley,
A control unit that controls the tension applying mechanism so that the pressing force has a preset value,
An elongated swinging arm that pivotally supports the pair of pulleys at both ends,
A drive unit that rotationally drives the swing arm,
Equipped with
The drive unit includes a motor having a drive shaft fixed to the center of the swing arm .
Tensioning device for interlocking ropes for elevator hall doors. Of the installed hall door elevator hall is provided so as to open and close by being driven by the car door ride is one of the hall door, the interlocking in the elevator hall doors to synchronize with the other hall door by the opening and closing operation interlocking rope In the rope tensioning device ,
A pulley pair having two pulleys in contact with the interlocking rope,
A tension applying mechanism for applying tension to the interlocking rope by pressing the pulley against the interlocking rope,
A detection unit that detects the torque applied to the interlocking rope by the tension applying mechanism via the pulley,
Control for controlling the tension applying mechanism so that the tension applying mechanism calculates a pressing force applied to the interlocking rope based on the torque detected by the detection unit and the pressing force becomes a preset value. Department,
An elongated swinging arm that pivotally supports the pair of pulleys at both ends,
A drive unit that rotationally drives the swing arm,
Equipped with
The drive unit includes a motor having a drive shaft fixed to the center of the swing arm .
Tensioning device for interlocking ropes for elevator hall doors. Of the installed hall door elevator hall is provided so as to open and close by being driven by the car door ride is one of the hall door, the interlocking in the elevator hall doors to synchronize with the other hall door by the opening and closing operation interlocking rope In the rope tensioning device ,
A pulley pair having two pulleys in contact with the interlocking rope,
A tension applying mechanism for applying tension to the interlocking rope by pressing the pulley against the interlocking rope,
A detection unit for detecting the vertical position of the interlocking rope,
A control unit that controls the tension applying mechanism so that the position of the interlocking rope detected by the detection unit is a preset vertical position,
An elongated swinging arm that pivotally supports the pair of pulleys at both ends,
A drive unit that rotationally drives the swing arm,
Equipped with
The drive unit includes a motor having a drive shaft fixed to the center of the swing arm .
Tensioning device for interlocking ropes for elevator hall doors. Of the installed hall door elevator hall is provided so as to open and close by being driven by the car door ride is one of the hall door, the interlocking in the elevator hall doors to synchronize with the other hall door by the opening and closing operation interlocking rope In the rope tensioning device ,
A pulley that contacts the interlocking rope,
A tension applying mechanism for applying tension to the interlocking rope by pressing the pulley against the interlocking rope,
A detection unit that detects a pressing force applied to the interlocking rope by the pulley,
A control unit that controls the tension applying mechanism so that the pressing force has a preset value,
A motor,
A pinion gear fixed to the drive shaft of the motor,
A rack gear driven by the motor through the pinion gear,
Equipped with
The pulley is rotatably supported on an upper end portion of the rack gear ,
Tensioning device for interlocking ropes for elevator hall doors. Of the installed hall door elevator hall is provided so as to open and close by being driven by the car door ride is one of the hall door, the interlocking in the elevator hall doors to synchronize with the other hall door by the opening and closing operation interlocking rope In the rope tensioning device ,
A pulley that contacts the interlocking rope,
A tension applying mechanism for applying tension to the interlocking rope by pressing the pulley against the interlocking rope,
A detection unit for detecting the vertical position of the interlocking rope,
A control unit that controls the tension applying mechanism so that the position of the interlocking rope detected by the detection unit is a preset vertical position,
A motor,
A pinion gear fixed to the drive shaft of the motor,
A rack gear driven by the motor through the pinion gear,
Equipped with
The pulley is rotatably supported on an upper end portion of the rack gear ,
Tensioning device for interlocking ropes for elevator hall doors.

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