JP2018188247A - Elevator apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a an elevator apparatus capable of applying a cylindrical-type VCM which is downsized and attains a low power consumption by the linear support of a roller, and attains the downsizing and low power consumption of a roller guide device.SOLUTION: A guide mechanism 31 installed in an elevator car displaceably supports a roller 32 in the direction intersecting the longitudinal direction of the guide rail and presses the roller on the guide rail with a pressurizing spring 37. A damping drive part 43 is provided in the guide mechanism 31 and actuates the roller 32 in the direction of suppressing the lateral swinging of an elevator car. The damping drive part 43 uses a cylindrical-type voice coil motor. The pressurizing spring 37 is connected to the bearing of the rotation center of the roller 32 and applies a pressurizing force on the rotation center of the roller 32. The cylindrical-type voice coil motor 43 is arranged on a side of the pressurizing spring 37 in such a way that the operating direction is parallel to the pressurizing direction of the pressurizing spring 37 and the operating part is connected to the bearing of the rotation center of the roller 32 via a bracket 44.SELECTED DRAWING: Figure 3

Description

  Embodiments described herein relate generally to an elevator apparatus having a guide mechanism that actively suppresses shaking applied to a passenger car.

  In recent years, with the heightening of buildings, the journey of elevators has been extended, and the super-high speed of elevators has become an important factor. In such an ultra-high speed elevator, the installation error of the guide rail and the bending due to the load of the car influence the riding comfort. For this reason, there has been proposed a method for reducing the vibration of the car by actively controlling the guide mechanism of the roller that rolls in contact with the guide rail.

  In the conventionally proposed method, as described in Japanese Patent No. 4161063, a planar voice coil motor (VCM) is installed on the roller guide so that its operating direction is vertical, and the vertical operation is performed. The roller is swung by rotating the lever.

  In this conventional example, since the voice coil motor (VCM) is a flat type, the planar shape of the coil operating vertically is wound in a horizontally long rectangular shape, and the coil side surface on the long side is a magnet on the stator side. Will be opposite. For this reason, when the coil that drives the lever operates in the vertical direction and rotates the lever, the side surface on the short side of the coil is inclined, but the coil side surface on the long side facing the magnet is not inclined, There is an advantage that the gap between them does not change.

  However, since only the side of the long side faces the magnet of the coil, there are few sites where thrust is generated by interlinking with the magnetic flux, and it is necessary to increase the size to obtain a large driving force for operating the roller. I didn't get it. That is, a planar voice coil motor (VCM) is generally large and inefficient.

Japanese Patent No. 4161063

  Therefore, it has been considered to use a cylindrical VCM that can efficiently obtain a thrust instead of the planar VCM. The cylindrical type VCM is provided with a cylindrical coil as a mover in a cylindrical magnet on the stator side and linearly drives along the axial direction. Because of this structure, magnetic flux is present in the circumferential direction, so there is a large amount of magnetic flux interlinking with the coil, and thrust can be obtained efficiently, so that it is possible to generate thrust necessary for the operation of the roller while being small. .

  However, it is difficult to incorporate a cylindrical VCM into a structure in which a roller swings because the coil cannot be inclined as in a flat type VCM. That is, in the case of a structure in which the roller is swung, the coil of the cylindrical VCM is inclined, so that the gap between the mover and the stator is changed to cause contact.

  It is an object of the present invention to provide an elevator apparatus that can be applied to a small-sized and low power consumption cylindrical VCM by linearly supporting a roller, and that can reduce the size and power consumption of a roller guide device.

  An elevator apparatus according to an embodiment of the present invention includes a pair of left and right guide rails arranged vertically on both sides of a car in a hoistway, and a roll provided in contact with the guide rail. A guide mechanism having a structure for supporting the roller so as to be displaceable in a direction intersecting the length direction of the guide rail and pressing the roller against the guide rail by a pressure spring, and provided in the guide mechanism. And a vibration suppression drive unit that operates the roller in a direction to suppress the roll when the rolling of the car is detected, and a cylindrical stator as the vibration suppression drive unit, A cylindrical voice coil motor having a mover that is linearly driven along the axial direction in the child, and the pressurizing spring applies a pressing force in a direction intersecting a length direction of the guide rail. B The cylindrical voice coil motor has one end connected to the center of rotation of the rotation center so that the operating direction of the mover is parallel to the pressing direction of the pressing spring. Further, the pressure spring is disposed on the side of the pressure spring, and its operating portion is connected to the support portion at the center of rotation through a bracket.

  According to the above configuration, a cylindrical voice coil motor can be applied, and the roller guide device can be reduced in size. In addition, the downsizing of the device leads to cost reduction and energy saving.

It is a perspective view of the elevator apparatus which concerns on one Embodiment of this invention. It is a perspective view which shows a part of guide rail used for one Embodiment. It is a perspective view which shows an example of the guide mechanism used for one Embodiment. It is sectional drawing which shows an example of the lever guide part of the said guide mechanism. It is sectional drawing which shows the other example of the lever guide part of the said guide mechanism.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

  FIG. 1 is a perspective view showing an elevator apparatus 10. As shown in FIG. 1, the elevator apparatus 10 includes a pair of left and right guide rails 12 that extend in the vertical direction along the hoistway 11, and a car 20 that moves in the vertical direction along the guide rails 12. The car 20 is composed of a rectangular parallelepiped car room 22 and a car frame 23 provided around the car room 22. The cab 22 is provided with a door 22a that can be opened and closed in front. The car frame 23 includes a pair of left and right standing frames 24 along both side surfaces of the car room 22, and an upper beam 25 and a lower beam 26 along the upper and lower surfaces of the car room 22, and supports the car room 22. A total of four guide mechanisms 31 for guiding the car 20 along the guide rail 12 are provided on the left and right and top and bottom of the car frame 23 constituting the car 20 corresponding to the pair of left and right guide rails.

  FIG. 2 is a perspective view showing a part of the guide rail 12. A pair of left and right guide rails 12 are vertically arranged on both sides of the car 20 in the hoistway 11, and guide portions along the width direction of the car 20 (the surface direction of the door 22a shown in FIG. 1). 12a.

  FIG. 3 is a perspective view showing an example of the guide mechanism 31. In FIG. 3, the guide mechanism 31 includes a flat plate-like base 33 and a support column 34 erected on the base 33. The rotation shaft 35 of the roller 32 is rotatably fitted to the middle portion of the lever 36 in the longitudinal direction. As shown in FIG. 4, the lever 36 has a plurality of linear bushes 38 fitted in the horizontal guide holes. These linear bushes 38 are fitted to a plurality of shafts 39 integrally attached to the support column 34 along the horizontal direction so as to advance and retreat along the axial direction. For this reason, the lever 36 and the roller 32 rotatably attached to the lever 36 can be translated in the horizontal direction.

  The pressure spring 37 is provided between the support plate 51 and the lever 36. The support plate 51 is attached to the opposite side of the shaft 39 (the left side in the figure) of the shaft 39 described above, and a spring holding screw 41 is provided at the same height as the support portion of the rotation center (rotation shaft) 35 of the roller 32. It is screwed. The pressure spring 37 is installed along the outer periphery of the spring holding screw 41 between a predetermined height position on the left side surface of the lever 36 in the drawing. The height position where the right end of the pressure spring 37 in the figure is in pressure contact is the same height position as the support portion of the rotation center 35 of the roller 32.

  Accordingly, the pressure spring 37 has one end (the right end in the drawing) at the center of rotation of the roller 32 in order to apply a pressing force in a direction intersecting the length direction of the guide rail 12 shown in FIG. It is in contact with 35 bearings. For this reason, the roller 32 rotatably attached to the lever 36 receives a pressing force at the rotation center 35 in the right direction in the drawing, so that the lever 36 does not receive a moment force and the roller 32 is moved to the guide rail 12. Always press contact with.

  As shown in FIG. 3, the guide mechanism 31 is provided with a vibration suppression drive unit 43. When the rolling of the car 20 is detected by the sensor 45, the vibration suppression drive unit 43 drives the roller 32 in a direction that suppresses the rolling.

  Here, the rolling of the car 20 is detected by a sensor 45 provided on the car 20 side. That is, the measured value of the sensor 45 is converted into the operation displacement of the roller 32 by a controller (not shown). This converted value is given as an operation signal to the vibration suppression drive unit 43, and the vibration suppression drive unit 43 linearly drives the roller 32 directly in the vibration suppression direction. In other words, the swing of the car 20 can be suppressed by actively operating the roller 32.

  A cylindrical voice coil motor (hereinafter referred to as VCM) is used for the vibration suppression drive unit 43. As is well known, a cylindrical VCM is a movable element (not shown) comprising a cylindrical stator and a cylindrically wound coil that is linearly driven along the axial direction within the stator. ) And have. Due to such a configuration, since magnetic flux exists in the circumferential direction, there is much magnetic flux interlinking with the coil, and a large driving force is generated while being small.

  As shown in FIG. 3, the vibration suppression drive unit (hereinafter, proceeding as a cylindrical VCM) 43 is arranged so that the operating direction of the mover is parallel to the pressing direction of the pressing spring 37 described above. It is arranged on the side of the pressure spring 37. The operating portion is connected to the support portion of the rotation center 35 of the roller 32 described above via a bracket 44. That is, the cylindrical VCM 43 is fixed on the base 33, and receives a magnetic force generated by an input signal from the sensor 45, so that a coiled movable element (not shown) is linearly driven back and forth in the horizontal direction. . The mover (the operation portion of the VCM 43) is integrally formed with the bracket 44 described above, and the lever 36 and the roller 32 are linearly driven in the horizontal direction via the bracket 44.

  In this way, the cylindrical VCM 43 directly connects the bracket 44 integral with the operating portion that moves back and forth in the horizontal direction to the support portion of the rotation center 35 of the roller 32 of the lever 36 and moves the operating portion in the horizontal direction. The roller 32 is directly moved horizontally. That is, there is no link mechanism or the like that changes the operation direction during this period, so that the configuration can be simplified and the roller 32 can be operated sharply.

  Further, the center of the cylindrical VCM 43 and the rotation center of the roller 32 are installed at the same height as described above. With this configuration, when a control force is generated, no moment is generated in the lever 36 that is a support member of the roller 32, so that the frictional force generated in the sliding portion of the roller 32 is reduced. Thereby, the roller 32 is accurately displaced with respect to the applied control force, and the control performance is improved.

  Here, a cylindrical VCM is used as the vibration suppression drive unit 43. However, as compared with the case where a planar VCM is used, the planar VCM has a low magnetic flux density as described above. Therefore, in order to obtain a driving force equivalent to that of a cylindrical VCM, it is necessary to form a size that is at least twice that of the cylindrical VCM. For this reason, if it installs in the side of pressurization spring 37 as mentioned above, the whole shape of guide mechanism 31 will become very large. In addition, since the flat type VCM itself has a large shape, it is difficult to connect the height of the operation part to the height of the rotation center 35 of the roller 32, the structure becomes complicated, and the balance in operation is also good. Deteriorate.

  On the other hand, when the cylindrical VCM is used, it can be formed smaller than the flat type VCM, and the overall shape of the guide mechanism 31 can be compactly integrated even if it is installed on the side of the pressure spring 37 as described above. Can do. In addition, since the diameter of the cylindrical VCM can be made smaller than that of the flat-type VCM, it is possible to connect the height of the operating portion to the height of the rotation center 35 of the roller 32. It is possible easily, the structure is simplified, the balance of operation is good, and the operation is sensitive.

  As the sensor 45 for detecting the roll of the car 20, an acceleration sensor or a displacement sensor may be used. The installation position of the acceleration sensor may be an arbitrary position of the car 20. When the displacement sensor is used, the distance between the car 20 and the member supporting the roller 32 is measured by the displacement sensor. Therefore, the sensor 45 is attached to the base 33 as shown in FIG. Configure to measure quantity.

  In order to accurately detect the vibration of the car 20, it is necessary to accurately measure the displacement of the roller 32. However, in the conventional swing type configuration, the displacement amount of the roller is not proportional to the displacement amount of the lever. It was difficult to accurately measure the roller displacement.

  On the other hand, in the embodiment of the present invention, since the member supporting the roller 32 is linearly displaced with respect to the car 20, if the displacement between the member and the car is measured by the displacement sensor, it becomes the displacement amount of the roller 32 as it is, The displacement of the roller 32 can be measured accurately.

  FIG. 5 shows another example of the moving support structure of the lever 36 in the guide mechanism 31. That is, a linear guide 52 is used instead of the linear bush 38 shown in FIG. Even in this configuration, the lever 36 and the roller 32 rotatably attached to the lever 36 can be moved in the horizontal direction by the linear guide 52.

  3, the movable element side of the cylindrical VCM 43 is connected to the support portion of the rotation center 35 of the roller 32 via the bracket 44, and the cylindrical stator is a base that is a support member of the guide mechanism 31. Although attached to 33, this relationship may be reversed. That is, the stator of the cylindrical VCM 43 may be connected to the support portion of the rotation center 35 of the roller 32 via the bracket 44, and the movable element side may be attached to the base 33 that is a support member of the guide mechanism 31.

  Although several embodiments of the present invention have been described, these embodiments have been presented by way of example and are not intended to limit the scope of the invention. These novel embodiments can be implemented in various other forms, and various omissions, replacements, and changes can be made without departing from the scope of the invention. These embodiments and modifications thereof are included in the scope and gist of the invention, and are included in the invention described in the claims and the equivalents thereof.

DESCRIPTION OF SYMBOLS 10 ... Elevator apparatus 11 ... Hoistway 12 ... Guide rail 20 ... Ride car 22 ... Car room 23 ... Car frame 24 ... Standing frame 25 ... Upper beam 26.・ ・ Lower beam 31 ... Guide mechanism 32 ... Roller 33 ... Base 34 ... Stand 35 ... Roller shaft (rotation center)
36..Lever 37 ... Pressure spring 38 ... Linear bush 39 ... Shaft 41 ... Spring holding screw 43 ... Vibration control drive (cylindrical VCM)
44 ... Bracket (working part)
45 ... sensor 51 ... support plate 52 ... linear guide

Claims (7)

Guide rails arranged vertically on both sides of the car in the hoistway;
The roller is provided on the car and rolls in contact with the guide rail. The roller is supported so as to be displaceable in a direction intersecting the length direction of the guide rail, and the guide is supported by a pressure spring. A guide mechanism structured to press against the rail;
Provided in the guide mechanism, and when a roll of the car is detected, a vibration suppression drive unit that operates the roller in a direction to suppress the roll,
As the vibration suppression drive unit, a cylindrical voice coil motor having a cylindrical stator and a mover that is linearly driven along the axial direction in the stator is used.
The pressure spring has one end in contact with the center of rotation of the roller so as to apply a pressing force in a direction intersecting the length direction of the guide rail to the rotation center of the roller.
The cylindrical voice coil motor is disposed on the side of the pressurizing spring so that the operating direction of the mover is parallel to the pressurizing direction of the pressurizing spring, and the operating portion is interposed via a bracket. Elevator device connected to the center of rotation.   The elevator apparatus according to claim 1, wherein the shaking of the car is measured by an acceleration sensor.   The elevator apparatus according to claim 1, wherein the sway of the car is measured by a displacement sensor.   The cylindrical voice coil motor is characterized in that the mover is connected to a support portion at the rotation center of the roller via a bracket, and the stator is attached to a support member of the guide mechanism. The elevator apparatus according to any one of claims 1 to 3.   The cylindrical voice coil motor is characterized in that the stator is connected to a support portion at the rotation center of the roller via a bracket, and the mover is attached to a support member of the guide mechanism. The elevator apparatus according to any one of claims 1 to 3.   The linear bush is used as a linear support mechanism that guides a lever that rotatably holds the roller in a direction that intersects the length direction of the guide rail. The elevator apparatus as described in the item.   6. A linear guide is used as a linear support mechanism that guides a lever that rotatably holds the roller in a direction that intersects with a length direction of the guide rail. Elevator equipment in the section.

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