JP2018030711A - Elevator device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an elevator device capable of effectively suppressing vibration of a car by improving an operation direction of an active damper.SOLUTION: An elevator device comprises a guide mechanism having a guide roller 11 being provided on a car, brought into contact with a guide rails 3 vertically arranged in a hoistway, and rolling, and pressing the guide roller 11 against the guide rails 3 by a pressure spring 13 of which an operation direction is provided in parallel to a displacement direction while supporting the guide roller 11 in a displaceable manner in a direction orthogonal to a lengthwise direction of the guide rail 3. An active damper 25 of which damping force is controlled according to vibration of a car is provided such that its one end is coupled to a support member 18 of the guide roller 11 and that an operation direction is parallel to the pressure spring 13.SELECTED DRAWING: Figure 2

Description

  Embodiments of the present invention relate to an elevator apparatus having a guide mechanism capable of actively suppressing shaking applied to a passenger car.

  In the elevator apparatus, the car is guided along the guide rail by a guide mechanism provided in the car coming into contact with a guide rail standing on the inner wall of the hoistway. However, this guide rail has slight steps or bends due to errors during installation, deflection due to the load of the car, or aging. When the car is raised and lowered, the car is shaken by such a step or bend of the guide rail, and the passenger feels uncomfortable.

  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, in addition to the above-described factors, the car is swayed by a counterweight or a wind pressure when passing between adjacent elevator cars.

  Conventionally, such vibrations and vibrations have been suppressed by interposing a spring material. However, with ultra-high speed elevators, there is a limit to the suppression of such a configuration, which affects ride comfort. It was.

  Therefore, an active vibration reduction method that applies a force to suppress shaking from the outside is attracting attention. For example, in order to suppress vibration applied to the guide roller, the viscous fluid is enclosed, and the active damper in which the viscosity coefficient of the viscous fluid is variably controlled by a detection signal from a sensor that detects rolling of the car The thing which suppresses the shake of a cage using a car is proposed (for example, refer to patent documents 1).

Japanese Patent No. 2899455

In the invention of Patent Document 1, the active damper is attached in a direction parallel to the up-and-down direction of the car, and the roll of the roller is changed to a right angle by the link mechanism and transmitted to the piston of the active damper.
In such a configuration, friction and backlash occur in the pin support portion of the link mechanism, so that the intended damping performance may not be sufficiently exhibited.

  An object of the present invention is to provide an elevator apparatus that can effectively suppress the shaking of a car by improving the operation direction of an active damper.

  An elevator apparatus according to an embodiment of the present invention includes a guide rail disposed vertically in a hoistway, and a guide roller that is provided on a car and rolls in contact with the guide rail. And a guide mechanism having a structure in which an operation direction is pressed toward the guide rail by a pressure spring provided in parallel with the displacement direction, and is supported so as to be displaceable in a direction perpendicular to the length direction of the guide rail. One end is connected to the support member of the guide roller, the active mechanism is provided in the guide mechanism so that the operation direction is parallel to the pressure spring, and an active damper whose damping force is controlled according to vibration of the car It is characterized by having.

  According to the said structure, since the active damper was attached so that the operation direction might become parallel to the displacement direction of a guide roller, the shaking of a passenger car can be suppressed effectively.

It is a front view which shows the hoistway part of the elevator apparatus which concerns on one Embodiment of this invention. It is a front view which shows the guide mechanism used for one Embodiment of this invention.

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

  FIG. 1 is a front view showing a hoistway portion of an elevator apparatus. As shown in FIG. 1, a hoistway 2 is vertically arranged in a high-rise building 1, and a guide rail 3 is vertically arranged in parallel on the hoistway 2 via a plurality of brackets 4. . The guide rail 3 guides the car 5 in the up and down direction. The car 5 is provided so as to be movable up and down by a hoisting rope 6 of a hoisting machine (not shown).

  The car 5 is composed of a car frame 5a and a car room 5b, and a vibration isolating material is interposed between the car frame 5a and the car room 5b. In addition, guide mechanisms 10 are respectively provided at upper and lower corners of the car frame 5a.

  As shown in FIG. 2, each guide mechanism 10 has a guide roller 11 that rolls in contact with the guide rail 3, and presses the guide roller 11 toward the guide rail 3 by a pressure spring 13. . The pressurizing spring 13 is provided in a direction (horizontal direction shown in the drawing) in which the operating direction (pressing direction) is orthogonal to the length direction (shown vertical direction) of the guide rail 3. That is, the guide roller 11 is displaced in the horizontal direction in the drawing due to the bending of the guide rail 3 when the car 5 is raised and lowered. The pressure spring 13 is installed so that its operating direction is parallel to the displacement direction of the guide roller 11.

  Specifically, the guide mechanism 10 has a flat plate-like base 15 provided integrally with the car frame 5 a shown in FIG. 1 and a column 16 erected on the base 15. The rotation center shaft 17 of the guide roller 11 is attached to the middle portion (lower part in the figure) of the lever 18 in the longitudinal direction. Although not shown, the lever 18 has horizontal guide holes and a plurality of linear bushes fitted in the guide holes. These linear bushes are fitted to a plurality of shafts 20 integrally attached to the support column 16 along the horizontal direction so as to advance and retreat along the axial direction. For this reason, the lever 18 and the guide roller 11 rotatably attached to the lever 18 can be translated in the horizontal direction in the figure. That is, the lever 18 is a support member that supports the guide roller 11 so as to be displaceable along the horizontal direction in the figure.

  One end (left end in the drawing) of studs 21 and 22 extending in the horizontal direction in the drawing is integrally attached to the upper portion of the support column 16. The pressure spring 13 described above is provided between one end (the right side in the figure) of the stud 21 and the right side face in the figure of the lever 18.

  The stud 21 penetrates the lever 18 so as to be able to advance and retreat, and the other end side (the left side in the drawing) is integrally attached to the upper portion of the column 16 as described above. Therefore, the lever 18 and the guide roller 11 rotatably attached to the lever 18 are configured to receive a pressing force toward the left in the drawing by the pressure spring 13 so that the guide roller 11 is always in contact with the guide rail 3. ing.

  The stud 22 also penetrates the lever 18 so as to be able to advance and retreat, and a vertical support plate 23 is integrally attached to the right side of the figure by a nut 24.

  The pressure spring 13 passes through an opening (not shown) opened in the support plate 23. Therefore, the pressure spring 13 does not contact the support plate 23, and the expansion / contraction operation is not interfered.

  The left side surface of the support plate 23 is opposed to the right side surface of the lever 18 with a gap. This interval changes according to the horizontal displacement (hereinafter also referred to as roll) of the guide roller 11 in the figure. An active damper 25 is provided below the support plate 23 in order to dampen the change in the interval, that is, the roll of the guide roller 11.

  In the active damper 25, the damping force is controlled according to the vibration of the car 5, and the distal end portion (the left end in the drawing) of the operating element is connected to the right side surface in the drawing of the lever 18 that is a support member of the guide roller 11. Has been. Further, it is attached in the illustrated lateral direction so that its operating direction is parallel to the operating direction of the pressure spring 13 (which is also the displacement direction of the guide roller 11). That is, since the operation direction of the active damper 25 is arranged in parallel with the horizontal displacement direction of the lever 18 due to the roll of the guide roller 11, the displacement of the lever 18 is directly applied to the active damper 25. Therefore, the active damper 25 can react sensitively to the roll of the guide roller 11 without causing a loss, and an efficient damping function is generated.

  In this case, if the installation position of the active damper 25 is set at a position where an action line passing through the axis center (the imaginary line in the horizontal direction in the drawing) intersects the rotation center axis 17 of the guide roller 11, More preferred.

  The active damper 25 has a damping force controlled according to the vibration of the car 5 as described above. For example, a viscous fluid is enclosed in a cylindrical body having a piston-like actuator, and the car 5 It has a function of variably controlling the viscosity coefficient of the viscous fluid by a detection signal from a detection sensor that detects the roll of the fluid.

  As a technique for variably controlling the viscosity coefficient of the viscous fluid, the cylindrical body is made of a non-magnetic material, and the cylindrical body is filled with a magnetic fluid as a viscous fluid, and an electromagnetic coil is wound around the outer periphery of the cylindrical body. Is used. The car 5 is provided with a sensor for detecting roll, and the current value flowing through the electromagnetic coil is controlled by a detection signal from the sensor to change the viscosity coefficient of the magnetic fluid.

  As another configuration, the cylindrical body is filled with a viscous fluid, and an orifice for changing the flow resistance of the viscous fluid is provided in the cylindrical body. The viscous fluid flow resistance may be changed by variably controlling the inner diameter of the orifice based on a detection signal from a sensor that detects the rolling of the car 5.

  In these configurations, as shown in FIG. 1, the car 5 is guided to a guide rail 3 provided vertically in the hoistway 2 via a guide mechanism 10, and is driven up and down by a hoisting machine (not shown). Is done. During the ascending and descending, the guide mechanism 10 provided in the car 5 has the guide roller 11 shown in FIG. 2 constantly in contact with the guide rail 3 by the pressure spring 13 and rolls along the guide rail 3. As shown in an exaggerated manner in FIG. 1, the guide rail 3 has a bend or the like. Therefore, the guide roller 11 and the lever 18 that supports the guide roller 11 are displaced in the illustrated horizontal direction when the guide rail 3 is lifted.

  One end (left end in the figure) of the actuator of the active damper 25 is connected to the lever 18, and the operation direction of the active damper 25 is the illustrated horizontal direction parallel to the displacement direction of the lever 18. For this reason, the illustrated horizontal displacement of the guide roller 11 is directly applied to the operating direction of the active damper 25.

  As described above, the active damper 25 has a damping force controlled according to the vibration of the car 5. Then, the viscosity coefficient of the enclosed viscous fluid is variably controlled by a detection signal from a sensor that detects the roll of the car 5, and the roll of the car can be effectively suppressed.

  That is, when the guide roller 11 rolling on the guide rail 3 is displaced in the illustrated horizontal direction due to the bending of the guide rail 3, the displacement is transmitted to the car 5 via the guide mechanism 10 having the guide roller 11, Rolling occurs in the car 5.

  The car 5 is provided with a vibration sensor for detecting the roll, for example, and the vibration of the car 5 is detected by the vibration sensor. The detection signal from the vibration sensor is sent to a control device (not shown) having a vibration analysis function, and the frequency of the vibration waveform of this detection signal is comparatively analyzed. Since the damping force of the active damper 25 is controlled according to the vibration of the car 5, when the frequency of this detection signal is relatively low and close to the natural frequency of the car 5, Increase viscosity of viscous fluid.

  That is, when a magnetic fluid is used as the viscous fluid, a large current is passed through the electromagnetic coil wound around the fluid to increase the viscosity of the magnetic fluid. Alternatively, when an orifice is provided in the viscous fluid, the orifice diameter is reduced to increase the flow resistance of the viscous fluid, and the viscosity is increased.

  On the other hand, if the frequency of the detection signal is relatively high, the viscosity of the viscous fluid of the active damper 25 is reduced. That is, the current flowing through the electromagnetic coil is reduced (including zero) to reduce the viscosity of the magnetic fluid. Alternatively, the orifice diameter is increased to reduce the flow resistance of the viscous fluid, thereby reducing its viscosity. These controls can be easily realized by the control circuit described above using existing control technology.

  Thus, by actively controlling the active damper 25 against the rolling of the car 5, the rolling of the car can be effectively attenuated and suppressed. Particularly, since the active damper 25 is installed so that the operation direction of the active damper 25 is parallel to the displacement direction of the guide roller 11 and the lever 18 supporting the guide roller 11, these displacement forces are directly applied to the active damper 25. For this reason, compared with the structure which changes the displacement direction with the conventional link mechanism, a sharp operation | movement is attained and an effective damping function can be obtained. In addition, a reliable damping function can be obtained without being affected by looseness or play of the link mechanism.

  In the above-described embodiment, the support plate 23 is provided on the right side of the lever 18 in the drawing, and the active damper 25 is provided between the support plate 23 and the right side surface of the lever 18 in the drawing. It is not limited to. For example, if the space between the support column 16 and the left side surface of the lever 18 is sufficient, the active damper 25 is attached to the support column 16 in the illustrated horizontal direction, and the tip of the actuator is connected to the illustrated left side surface of the lever 18. Good. Thus, the active damper 25 may be attached to any member constituting the guide mechanism 10, and the attachment structure is not particularly limited.

  In the case of this configuration, the support plate 23 and the stud 22 for attaching the support plate 23 shown in FIG. 2 are not necessary, and the number of parts can be reduced.

  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.

2 ... hoistway 3 ... guide rail 5 ... car 10 ... guide mechanism 11 ... guide roller 13 ... pressure spring 25 ... active damper

Claims (3)

Guide rails arranged vertically in the hoistway;
A guide roller provided on the car and rolling in contact with the guide rail. The guide roller is supported so as to be displaceable in a direction perpendicular to the length direction of the guide rail, and the operation direction is a displacement direction. A guide mechanism having a structure that is pressed against the guide rail by a pressure spring provided in parallel with
An active damper having one end connected to the support member of the guide roller and provided in the guide mechanism such that the operating direction is parallel to the pressure spring, and the damping force is controlled according to the vibration of the car;
An elevator apparatus comprising:   In the active damper, a viscous fluid for suppressing vibration applied to the guide roller is enclosed, and the viscosity coefficient of the viscous fluid is variably controlled by a detection signal from a sensor that detects the rolling of the car. The elevator apparatus of Claim 1 which has a function to do.   In the active damper, a viscous fluid for suppressing vibration applied to the guide roller is enclosed, and an orifice for changing the flow resistance of the viscous fluid is provided to detect the rolling of the car. The elevator apparatus according to claim 1, having a function of variably controlling the inner diameter of the orifice according to a detection signal from a detection sensor.

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