JP2014234295A - Elevator device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To solve such the problems that in the conventional elevator having a compensation pulley device, a damping effect of a damper is weakened by an increase in amplitude of a rope due to reduction in elasticity of the rope caused by a longer stroke, and a reduction of natural frequency of the rope, and vertical vibration of the compensation pulley device is increased, which causes an elevator car to vibrate vertically to worsen ride comfort.SOLUTION: An elevator device which has a compensation pulley device used for compensating balance of mass of a main rope by which an elevator car and a balance weight are suspended, depending on positions of the elevator car and the balance weight of the elevator device, is provided with: actuator means that gives the compensation pulley pressing force to a guide rail when the compensation pulley vibrates vertically, and increases friction force between the guide rail and the compensation pulley to enhance damping; and link mechanism means that converts displacement in a horizontal direction by the actuator means to displacement in a vertical direction of the compensation pulley.

Description

  The present invention relates to an elevator apparatus including a compensation pulley apparatus having a compensation pulley and a compensation rope.

  In general, an elevator apparatus is suspended on a main rope, a sheave attached to the output shaft of the hoisting machine, a main rope hung on the sheave, a car suspended on the main rope and controlled in speed by the hoisting machine. Consists of a counterweight with a mass equivalent to that of the car. In such a lift type elevator apparatus, the elevator car is lifted and lowered by reducing the effective load of the motor by balancing the masses of the car side and the counterweight side.

  If the elevator stroke becomes longer, the proportion of the mass occupied by the main rope changes depending on the position of the car, and an imbalance occurs and the effective load of the hoisting machine fluctuates. In order to minimize such load fluctuations of the hoist, a compen- sion rope connected to the lower part of the carriage and the counterweight and having the same mass and length as the main rope, and a compensator that applies tension to the compen- sion rope A compensatory pulley device having a pulley is provided.

  Compensation pulleys are designed not to be fixed to the building but to be suspended from the compensation rope in order to give tension to the compensation rope whose length changes due to temperature, aging, etc. The vibration of the Complied pulley is attenuated by the frictional force with the sliding part.

  The elevator system depends on the behavior of the vertical and vibration modes determined by factors such as the elasticity of the main rope and compen- sion rope, the rotational inertia of the hoist, the weight of the car and counterweight, the weight of the compensator pulley and the rotational inertia of its rotating part. In some cases, the speed control system of the hoisting machine becomes unstable and vibrations occur, which may impair the riding comfort as an elevator apparatus.

  In a conventional elevator system, the vertical vibration of the compensation pulley is attenuated only by the frictional force with the guide rail. If the vertical vibration of the compensation pulley cannot be effectively suppressed, the vibration is excited through the compensation rope and the car Vertical vibration increases. As a prior art relating to a means for giving damping to the vertical vibration of a compensatory pulley, Patent Document 1 provides a damper that gives damping to each pulley independently by a mechanism using two complied pulleys, and the weight of the car and the balance. Has been disclosed that reduces vibration by moving in phase or in phase.

JP-A-6-21463

  In Patent Document 1, the vibration generated by the car and the counterweight is reduced by the damper provided on the compen pulley to reduce the vertical vibration. However, if the rope natural frequency is lowered due to the rope elasticity drop accompanying the increase in the length of the elevator, the damping effect of the damper is weakened, and the vertical vibration of the compensation pulley cannot be reduced. Further, in order to cope with an increase in rope amplitude due to a drop in rope elasticity accompanying a longer stroke in the configuration of Patent Document 1, it is necessary to lengthen the stroke of the damper or enlarge the mechanism. Furthermore, when a rope amplitude exceeding the stroke of the damper is generated, there is a problem that the compensatory pulley mechanism itself vibrates up and down and the damping mechanism does not function.

  An object of the present invention is to suppress vertical vibrations generated in a car by suppressing vibrations generated in a compensator pulley even in a long-stroke elevator device, thereby making the ride comfort of the elevator device comfortable. .

  The present invention lifts and lowers a passenger car and a counterweight suspended from a main rope by a hoisting machine, and includes a lower part of the car, a compenand rope connected to the lower part of the counterweight, and a compensator pulley. In an elevator apparatus equipped with a compensatory pulley device that slides and guides along a guide rail, the compensator pulley is provided with an actuator device that applies a pressing force that increases a frictional force in a direction orthogonal to the guide rail. A link mechanism for converting the displacement of the actuator device into the displacement of the compen pulley in the guide rail direction is provided.

According to the present invention, the car and the counterweight suspended from the main rope are moved up and down by the hoisting machine, the lower part of the car, the compenand rope connected to the lower part of the counterweight and the compensator pulley, In an elevator apparatus equipped with a compensatory pulley apparatus that slides and guides a pulley along a guide rail, the compensator apparatus is provided with an actuator device that applies a pressing force that increases a frictional force in a direction orthogonal to the guide rail. By providing a link mechanism that converts the displacement of the actuator device into the displacement of the guide pulley in the guide rail direction between the devices,
By increasing the frictional force between the guide rail and the compensation pulley, it is possible to reduce the vertical vibration of the compensation pulley. In addition, by converting the horizontal displacement of the actuator to the vertical displacement of the compensation pulley using a link mechanism and attenuating the vertical vibration of the compensation pulley, it becomes possible to effectively reduce the vibration of the compensation pulley device. By reducing the car vertical vibration excited by the vertical vibration of the car, the ride comfort as the elevator apparatus can be made comfortable.

The schematic diagram which shows the whole structure of the elevator apparatus which concerns on Example 1 of this invention. 1 is a front view illustrating a configuration of a compensatory pulley device according to Embodiment 1. FIG. FIG. 3 is a side view illustrating a configuration of a compensatory pulley device according to the first embodiment. FIG. 3 is a perspective view illustrating a configuration of an actuator device according to the first embodiment. FIG. 2 is a block diagram illustrating a circuit configuration of a control unit according to the first embodiment. Explanatory drawing explaining operation | movement of the compensation pulley apparatus in Example 1. FIG. Explanatory drawing explaining operation | movement of the compensation pulley apparatus in Example 1. FIG. Explanatory drawing explaining operation | movement of the compensation pulley apparatus in Example 1. FIG. Explanatory drawing explaining operation | movement of the compensation pulley apparatus in Example 1. FIG. The schematic diagram which shows the whole structure of the elevator apparatus which concerns on Example 2 of this invention. The front view which shows the structure of the compensation pulley apparatus in Example 2. FIG. The side view which shows the structure of the compensation pulley apparatus in Example 2. FIG. The perspective view of the compensation pulley apparatus in Example 2. FIG. FIG. 6 is a block diagram illustrating a circuit configuration of a control unit according to the second embodiment. The schematic diagram which shows the rope change by operation | movement of the apparatus in Example 2. FIG. The schematic diagram which shows the rope change by operation | movement of the apparatus in Example 2. FIG.

  Hereinafter, the present invention will be described with reference to examples and drawings.

  Embodiment 1 of the present invention will be described below. FIG. 1 is a schematic diagram illustrating an overall configuration of an elevator apparatus according to a first embodiment.

  As shown in FIG. 1, in an elevator apparatus 100, a car 6 and a counterweight 3 are connected to a sheave 1 attached to an output shaft of a hoisting machine (not shown) via a main rope 2. Reference numeral 50 denotes a compensation pulley device. A compensation rope 4 that compensates for a change in the weight of the main rope 2 due to the position of the car 6 is connected to the car 6 under the counterweight 3 via a compensation pulley 5. 51 and 52 are guide shoes slidably guided by the guide rail 7, 53 is an actuator device, and 56 is a compensation pulley frame. A link 55 connects the actuator device 53 and the compen pulley pulley 56. Reference numeral 200 denotes an actuator controller, and 202 denotes a position sensor of the compensator pulley 5. F is the floor of the building.

  FIG. 2A is a front view illustrating the configuration of the compensator pulley device according to the first embodiment, and FIG. 2B is a side view illustrating the configuration of the compensator pulley device. The compensation pulley 5 is suspended from the compensation rope 4 and is movable in the vertical direction by the guide rail 7 in order to cope with the expansion and contraction of the compensation rope 4. At this time, the compensator pulley 5 and the guide rail 7 are guided by the guide shoe 51. The guide shoe 51 is attached to a compensation pulley frame 56 having the axis of the compensation pulley 5. The link 55 is provided between the compensator frame 56 and the actuator device 53 by shafts 70 and 71, and is rotatably supported by the shafts 70 and 71. The actuator device 53 connected to the link 55 includes an actuator support portion 81 and a linear actuator 82, and is guided in the vertical direction by the guide rail 7 via the guide shoe 52.

  FIG. 3 is a perspective view illustrating a detailed configuration of the actuator device 53 according to the first embodiment. A shaft 71 connected to the link 55 is supported by an actuator support portion 81. The linear actuator 82 is attached between the actuator support portion 81 and the guide shoe 52 in a direction orthogonal to the guide rail 7 and can be extended and retracted by electromagnetic force. FIG. 3 shows only a set of actuator devices 53 that engage with the guide rail 7 on the front side of the device.

  FIG. 4 is a block diagram illustrating a circuit configuration of the actuator control unit 200 according to the first embodiment. In FIG. 4, an arrow line indicates a signal line. The actuator control unit 200 includes a sensor unit 201, a torque calculation unit 210, and a drive control unit 220.

  In the sensor unit 201, the position sensor 202 detects the vertical position of the compensation pulley frame 56, and outputs a driving torque to the linear actuator 82 based on the output of the sensor unit 201. The position sensor 202 measures the distance between the compensation pulley frame 56 and the building floor F and detects the movement distance generated by vibration, and the position signal conversion unit 203 converts the position signal into a digital signal.

  In the torque calculator 210, the gain compensator 212 multiplies the output of the position signal converter 203 by the gain, and the adder 213 adds this output and the output of the target value generator 211 that becomes the target position of the compensator frame 56. The difference from the target position is input to the drive control unit 220 as a command value. Next, the linear actuator 82 is driven with the torque obtained by the drive control unit 220.

  FIG. 5A to FIG. 5D are explanatory diagrams for explaining the operation of the compensator pulley device according to the first embodiment. The position sensor 202 attached to the compensation pulley frame 56 detects the distance between the compensation pulley frame 56 and the building floor surface F. The actuator device 53 is configured to be controlled based on information output from the position sensor 202 and driven in the guide rail direction, and applies a pressing force to the guide rail 7.

  When the compensation pulley 5 is raised, the linear actuator 82 is driven in the direction of the guide rail 7 as shown in FIG. 5A. As a result, as shown in FIG. 5B, the link 55 moves the link shaft 71 on the linear actuator 82 side in the direction of the guide rail 7, and the link 55 rotates around the shaft 71. The rotation of the compensation pulley 5 can be suppressed by pressing the compensation pulley frame 56 downward by this rotation.

  On the other hand, when the compensation pulley 5 is lowered, the linear actuator 82 is driven in the direction opposite to the guide rail 7 as shown in FIG. 5C. As a result, as shown in FIG. 5D, the link 55 moves in the reverse direction along the guide rail 7 by the link 55, so that the link 55 rotates about the shaft 71 on the linear actuator 82 side. To do. The compensator frame 56 is lifted upward by this rotation, so that the compensator 5 can be prevented from descending.

  The pressing force to the guide rail 7 generated by the driving of the linear actuator 82 increases the damping effect of the compensatory pulley device 50 and works to suppress vibration. Furthermore, the drive in the guide rail direction generated by the drive of the linear actuator 82 is converted into the vertical drive of the compensator pulley frame 55 and the compensator pulley 5 by the link 55, and the vertical vibration of the compensator pulley 5 itself is reduced.

  At this time, when the linear actuator 82 is driven in the direction of the guide rail 7, the guide shoe 52 attached to the actuator 82 moves the guide rail 7 in order to increase the frictional force against the guide rail 7 in the pressing direction and the attracting direction. It is formed in a U-shaped cross section so that a pressing force can be generated from both directions. 2 and 3 show only the front surface of the actuator device 53 for the sake of simplicity, but the back surface has the same configuration.

  In the first embodiment, the actuator is described as a linear actuator. However, as long as it can apply a pressing force to the guide rail, a mechanism that converts a linear actuator or a rotary actuator into a straight line may be used. A hydraulic actuator, a pneumatic actuator, a ball screw, or a rack opinion may be applied. Similarly, although the vibration meter has been described as a displacement meter, an accelerometer, a speedometer, or the like may be used as long as it can detect the vibration of the compensation pulley.

  As described above, according to the first embodiment, it is possible to increase the vibration damping effect due to the frictional force with the guide rail by increasing the pressing force in the guide rail direction using the actuator. Further, the vertical vibration of the compensation pulley can be reduced by the link mechanism that changes the driving of the actuator in the guide rail direction to the vertical driving of the compensation pulley. By these actions, the vibration generated in the compensation pulley 5 can be reduced, the car vertical vibration due to the vibration of the compensation pulley 5 can be reduced, and the ride comfort can be made more comfortable.

  Next, Example 2 will be described with reference to FIGS. FIG. 6 is a schematic diagram illustrating an overall configuration of the elevator apparatus 101 according to the second embodiment of the present invention. 7A to 7B are side views illustrating the configuration of the compensatory pulley device according to the second embodiment. FIG. 8 is a perspective view of the compensation pulley apparatus according to the second embodiment.

  6 to 8, the auxiliary pulley 91 is rotatably held on the auxiliary pulley frame 92, the compensation rope 4 is bridged on the auxiliary pulley 91, and the auxiliary pulley frame 92 and the auxiliary pulley 91 are connected by the linear actuator 82 of the actuator device 53. By driving in the direction orthogonal to the guide rail 7, the rope tension applied to the compensation rope 4 between the compensation pulley 5 and the auxiliary pulley 91 is changed, and the natural frequency of the compensation rope 4 is changed.

  Thereby, the rope vibration caused by the antiphase vibration between the car 6 and the counterweight 3 is also reduced, and the rotational vibration generated in the compensator pulley 5 is reduced, so that the vertical vibration of the car 6 is more reliably reduced. Can be done. Reference numeral 300 denotes an actuator controller, and 302 denotes a rotation angle detector that detects the rotation of the auxiliary pulley 91.

  For simplification of description, the same reference numerals are used for the common parts in the first embodiment, and detailed description thereof is omitted.

  As shown in FIG. 6, the auxiliary pulley frame 92 is provided with a shaft 71 connected to the link 55. The auxiliary pulley 91 is provided between the car 6 or the counterweight 3 and the compensation pulley 5.

  As shown in FIGS. 7A, 7B, and 8, the compensation rope 4 is installed across the compensation pulley 5 and the auxiliary pulley 91. The auxiliary pulley 91 is installed so as to be in contact with the compen- sation rope 4 even when the actuator displacement amount becomes maximum in the drive range of the linear actuator 82.

  FIG. 9 is a block diagram illustrating a circuit configuration of a control unit according to the second embodiment. The actuator control unit 300 includes a sensor unit 301, a torque calculation unit 310, and a drive control unit 220.

  In the sensor unit 301, the rotation angular velocity sensor 302 detects the rotation angular velocity of the auxiliary pulley 91, and the rotation angular velocity signal conversion unit 303 converts it into a digital signal. Based on the output of the sensor unit 301, the drive torque is output to the linear actuator 82 via the torque calculation unit 310 and the drive control unit 220. The sensor unit 301 detects the rotational angular velocity of the auxiliary pulley 91, detects the rotation of the auxiliary pulley 91 in the vibration mode that vibrates in the opposite directions generated in the car 6 and the counterweight 3, and outputs the rotational speed signal. Convert to digital signal.

  In the torque calculation unit 310, the gain compensator 312 multiplies the output of the rotational angular velocity signal conversion unit 303 by the gain, and the adder 313 adds the target value of the target value generator 311 to input the command value to the drive control unit 320. Then, tension is applied to the compensation rope 4 by the linear actuator 82 so that the rotation of the auxiliary pulley 91 is attenuated.

  10A and 10B are schematic diagrams illustrating a rope change due to the operation of the compensator pulley device according to the second embodiment. First, as shown in FIG. 10B, the linear actuator 82 is contracted and driven in the guide rail direction so that tension is applied to the compen- sion rope 4 by the link 55, and the natural frequency of the compen- sion rope 4 is changed in the increasing direction. By shifting the natural frequency of the compensation rope and the vibration frequency of the compensation rope, it is difficult to propagate the vibration.

  Further, as shown in FIG. 10A, when the linear actuator 82 is driven to extend in the direction opposite to the guide rail, the tension of the compensation rope 4 is lowered and the natural frequency of the compensation rope is lowered, thereby causing the compensation rope vibration. Can be made difficult to propagate.

  Further, by using the auxiliary pulley 91, for example, even when the compensator 4 is lowered when the compensator 4 is lowered, the compensator 4 is applied even when the auxiliary pulley 91 is fully contracted, so that the compen 4 can be continuously applied with tension, and therefore, it is possible to continue to apply a tension load to the compen- sation rope 4, which is the original role of the compensator pulley 5.

  As described above, according to the second embodiment, the auxiliary pulley 91 is used in addition to the increase in the frictional force applied to the guide rail 7 by the linear actuator 82 and the vertical displacement of the compensator pulley 5. It becomes possible to control the tension of the compensation rope 4. Therefore, it becomes possible to change the natural frequency of the compensation rope 4 between the auxiliary pulley 91 and the compensation pulley 5, and to reduce the vibration that causes the compensation pulley 5 to vibrate by making it difficult to transmit the vibration caused by the compensation rope 4. Thus, the car vertical vibration can be reduced more effectively, and the ride comfort can be made more comfortable.

2 Main rope 3 Counterweight 4 Compen rope 5 Compen pulley 6 Car cage 7 Guide rail 50 Compensation pulley device 51, 52 Guide shoe 53 Car cage 55 Link 56 Compensation pulley frame 81 Actuator support 82 Linear actuator 91 Auxiliary pulley 92 Auxiliary pulley frame 100, 101 Elevator apparatus 200, 300 Actuator control unit 201, 301 Sensor unit 202 Position sensor 203 Displacement signal conversion unit 210, 310 Torque calculation unit 211, 311 Target value generator 212, 312 Gain compensation noble 213, 313 Adder 220, 320 Drive control unit 302 Rotational angular velocity detector 303 Rotational angular velocity conversion unit

Claims (13)

The car and the counterweight suspended from the main rope are moved up and down by a hoisting machine, and the lower part of the car and the compen- sion rope and the compensator pulley connected to the lower part of the counterweight are provided, and the compensator pulley is guided by the guide rail In an elevator apparatus equipped with a compensatory pulley device that slides and guides along
An elevator apparatus characterized in that an actuator device for generating a damping force in the vertical vibration of the compensation pulley is provided in the compensation pulley device in order to reduce the vertical vibration of the compensation pulley.   2. The elevator apparatus according to claim 1, wherein an actuator device that applies a pressing force that increases a frictional force in a direction orthogonal to the guide rail is provided as the actuator device, and the actuator device is provided between the compensator pulley and the actuator device. An elevator apparatus comprising a link mechanism for converting the displacement of the compressor into a displacement of the compen pulley in a guide rail direction.   3. The elevator apparatus according to claim 1, wherein the actuator device is driven so as to attenuate a vibration of the compensation pulley device by increasing a frictional force between the sensor that detects the vibration of the compensation pulley and the guide rail device. An elevator apparatus comprising an actuator control unit.   The elevator apparatus according to any one of claims 1 to 3, wherein the compensation pulley apparatus includes a compensation pulley frame that rotatably supports the compensation pulley.   The elevator apparatus according to any one of claims 1 to 4, wherein the actuator apparatus includes a brake shoe that engages with the guide rail, and an actuator that is connected to the brake shoe.   The elevator apparatus according to claim 5, wherein the actuator apparatus includes an actuator support portion that supports the actuator.   The elevator apparatus according to claim 5, wherein the actuator apparatus includes a linear actuator provided between the brake shoe and the actuator apparatus so as to be extendable and contractible.   8. The elevator apparatus according to claim 1, wherein one end of the link mechanism is pivotally supported by the actuator device, and the other end of the link mechanism is pivotally supported by the compensator pulley. An elevator device characterized by being supported.   The elevator apparatus according to any one of claims 1 to 7, wherein the compensation pulley device includes an auxiliary pulley that applies tension to the compensation rope by displacement of the actuator device and suppresses rotational vibration of the compensation rope. Elevator device characterized.   The elevator apparatus according to claim 9, wherein the auxiliary pulley is rotatably supported by the actuator device.   The elevator apparatus according to claim 10, wherein the auxiliary pulley is rotatably supported by an auxiliary pulley frame provided in the actuator device.   The elevator apparatus according to any one of claims 9 to 11, wherein the auxiliary pulley is configured such that the tension of the compensation rope is variable by driving the actuator device in a direction orthogonal to the guide rail. .   13. The elevator apparatus according to claim 12, wherein the compensator pulley and the auxiliary pulley are connected by the link mechanism, and the compensator pulley is displaced along the guide rail by an opening / closing operation of the actuator device in a direction orthogonal to the guide rail. An elevator apparatus characterized by that.

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