JP6560000B2 - Elevator guide device - Google Patents

Description

  The present invention relates to an elevator guide device, and more particularly, to an elevator guide device that controls and suppresses car vibration and also enables vibration suppression by wind pressure when the elevator passes.

  Elevator guide devices are installed at four locations above and below the elevator car, and are configured to move up and down when guide rollers come into contact with guide rails on the structure side. With regard to such a guide device, the importance of technology for reducing vibrations in elevator cars is increasing with the recent increase in the number of structures and the speed of elevators.

  Among these, as a guide device equipped with technology to reduce the lateral vibration of the elevator car, it is equipped with a sensor that detects the lateral vibration of the car and an actuator that applies a damping force to the car, and the actuator reverses the lateral vibration to the actuator. A guide device having an active guide function for reducing vibration by applying to a car via a guide roller is known.

  It is also known that the guide device is provided with a damping device for performing vibration suppression by wind pressure when the elevator passes. Patent document 1 is an example of the guide apparatus of the elevator provided with the function of the said active guide, and the attenuation device.

  FIG. 2 is an elevator guide device disclosed in FIG. According to the description in Patent Document 1, “the linear motion damping device 21 that attenuates the vibration that the guide roller 9E is pushed from the guide rail 6 and moves between the arm 9G and the guide base 9A of the guide device 9 is the actuator 12. Both ends of the linear motion attenuating device 21 are rotatably connected to the arm 9G by a rotating bearing 21A and the guide base 9A by a rotating bearing 21B. Is the same as the linear motion damping device 5 for damping the vibration between the car frame and the car room, which has the effect of reducing the number of parts.

  In the structure of FIG. 2, the actuator 12 is an actuator that applies a damping force to the car in accordance with a signal from a sensor that detects lateral vibration of the car, and the linear motion damping device 21 corresponds to the damping device. In this case, 9B on the guide base 9A serves as a fulcrum, and the lateral movement force (left direction in the figure) applied by the actuator 12 presses the lever 9C (and hence the guide roller 9E) toward the guide rail 6 to suppress vibration. . Further, when the lever 9C tries to move laterally (rightward in the figure) due to the wind pressure, the linear motion damping device 21 is compressed, so that a force that prevents the lateral movement is applied. The relationship between the force point, fulcrum, and action point in each scene in the structure of FIG. 2 is as described above.

International Publication WO2006-137113

According to the conventional structure, there is a problem of the distance from the supporting point 9B to the active guide or the attenuation device. The structure of Patent Document 1 clearly has an arrangement relationship in which the latter distance is longer than the former distance. This means that it is difficult to secure the minimum necessary distance for control. If the distance of the drive unit is short with respect to the rotating shaft, the stroke required for the control cannot be secured, so that the control is difficult. For this solution, it is necessary to increase the size of the device in order to increase the accuracy of the machine parts or increase the lever ratio. This is a problem against miniaturization.

Accordingly, an object of the present invention is to provide an elevator guide device that can solve the problem of the distance from a fulcrum to an active guide or a damping device .

In view of the above, in the present invention, an elevator guide device including guide rollers provided on the upper, lower, left, and right sides of an elevator car and supported by contact with a guide rail on the structure side, on a base fixed to the car A lever rotatably mounted on the first rotating shaft, a damping device provided on the lever, a second rotating shaft mounted on the lever and rotatably mounted on the guide roller, and the lever And an active guide that is provided farther than the second rotating shaft and that is provided with a thrust in a direction that suppresses vibration generated in the car and rotates the lever .
For the lever, the distance from the first rotation axis of the lever to the point where the active guide applies thrust to the lever is longer than the distance from the first rotation axis of the lever to the damping device. with that,
The lever is disposed in a height direction, the damping device is disposed on a lower side from the first rotation shaft of the lever, and the active guide is provided on an upper end side of the lever .

ADVANTAGE OF THE INVENTION According to this invention, the guide apparatus of the elevator which can solve the problem of the distance from a fulcrum to an active guide or a damping device can be obtained.

The figure which shows an example of the guide apparatus (depth direction) of the elevator which concerns on the Example of this invention. The figure which shows the guide apparatus of the elevator disclosed by FIG. 15 of patent document 1. FIG. The figure which shows the structure of a typical elevator apparatus. The figure which shows an example of the guide apparatus (left-right direction) of the elevator which concerns on the Example of this invention.

  Embodiments of the present invention will be described below with reference to the drawings.

  FIG. 3 is a diagram illustrating a configuration of a typical elevator apparatus. As shown in the figure, the elevator car 100 of this elevator apparatus is formed using these in the area surrounded by the upper frame F1, the standing frame F2, and the lower frame F3. 104 is a floor, and 105 is a front door.

  Further, a total of four guide devices 110, 111, 112, 113 are fixed to the left and right and up and down of the elevator car (as viewed from the front door side) directly from these frames or appropriately through brackets.

  When the guide device 111 is described as a representative example, two guide rollers R1 and R2 are disposed in the front-rear direction (as viewed from the front door side), and one guide roller R3 is disposed in the left-right direction. As a result, the guide rollers R1, R, and R3 are supported in contact with the three points of the T-shaped guide rail 120 on the structure side, so that the car 100 can stably move in the vertical direction.

  In FIG. 3, reference numeral 40 denotes an acceleration sensor used for the function of the active guide described below. The acceleration sensor is installed in the vicinity of the guide device and mainly detects a lateral vibration component in that portion. The sensor output is collected in a controller (not shown) to drive the motor of each guide device. In the motor drive, a thrust in a direction to suppress the lateral vibration is generated.

  FIG. 1 is a diagram illustrating an example of an elevator guide apparatus according to an embodiment of the present invention. The figure shows the function of the active guide and the function of the damping device for the two guide rollers in the depth direction. The guide device is configured on a base B fixed to the car 100. The levers LR1 and LR2 are attached to the support portions 33R1 and 33R2 configured integrally with the base B so as to be rotatable on the lever rotation shafts 32R1 and 32R2.

  Under the levers LR1 and LR2, viscoelastic damping devices 21R1 and 21R2 made of, for example, rubber are attached. The damping devices 21R1 and 21R2 try to move by the left and right movements of the levers LR1 and LR2 starting from the lever rotation shafts 32R1 and 32R2, but due to, for example, viscoelasticity between the damping devices 21R1 and 21R2 and the support portions 33R1 and 33R2. Movement is deterred by resistance. The damping devices 21R1 and 21R2 suppress relatively long-period vibrations that suppress vibrations due to instantaneous wind pressure when the elevator cars pass at high speed.

  Rotation support shafts 31R1 and 31R2 of guide rollers R1 and R2 are provided above the lever rotation shafts 32R1 and 32R2 of the levers LR1 and LR2, and rotatably support the guide rollers R1 and R2. Further, an active guide function is disposed above the levers LR1 and LR2.

  In FIG. 1, 34 is a motor. The motor 34 is driven by the output of the acceleration sensor 40 that detects the car vibration, and the rotational force of the motor 34 is controlled so as to suppress the car vibration. Reference numeral 35 denotes a linear guide such as a ball screw, which converts the rotational force of the motor 34 into a left-right thrust. The thrust of the linear guide 35 is transmitted to the left and right connecting fittings 36.

  On the other hand, spring rods 38R1 and 38R2 to which a pressing force is applied by the springs 37R1 and 37R2 are pressed against the left and right surfaces of the left and right connecting fittings 36 on the upper portions of the levers LR1 and LR2. For this reason, the thrust for the lateral movement of the left and right coupling fitting 36 is transmitted from the spring rods 38R1 and 38R2 and the levers LR1 and LR2 to the two guide rollers R1 and R2, thereby controlling the pressing force of the guide rollers R1 and R2. Note that 39R1 and 39R2 are stoppers.

  As shown in FIG. 1, in the elevator guide device of the present invention, the functions of the active guide and the damping device are arranged on the linear levers LR1 and LR2. The levers LR1 and LR2 include rotation support shafts 31R1 and 31R2 for the guide rollers R1 and R2, and also serve as a rotation shaft support function. That is, the functions of the damping devices 21R1 and 21R2 are arranged on the lower side with the lever rotation shafts 32R1 and 32R2 of the linear levers LR1 and LR2 as fulcrums, and the upper side of the guide rollers R1 and R2 via the rotation support shafts 31R1 and 31R2. Active guide functions (spring rods 38R1 and 38R2 and left and right connecting fittings 36) are arranged.

According to this configuration, the active guide includes the motor 34 driven by the signal from the acceleration sensor, the linear guide 35 that converts the rotation of the motor 34 into a linear distance, and the lever LR1 using the moving distance of the linear guide 35 as a thrust. The left and right connecting brackets 36 rotate the LR2, and the thrust applied to the two levers LR1 and LR2 by the left and right connecting brackets 36 releases the thrust applied to the other lever LR2 when thrust is applied to one lever LR1. In the present invention, downsizing is enabled by the function distribution up and down by the linear levers LR1 and LR2.

  What is important in the present invention is the problem of the distance from the lever rotation shafts 32R1, 32R2, which are fulcrums, to the active guides (spring rods 38R1, 38R2 and left and right coupling fittings 36) or the damping devices 21R1, 21R2. In the present invention, the distance of the former is clearly longer than the distance of the latter. This means that the minimum necessary distance for control is secured. Since the distance of a drive part is long with respect to a rotating shaft, the stroke required for control can be ensured and control is made easy. With this solution, it is not necessary to increase the accuracy of the machine parts or to increase the device size in order to increase the lever ratio. Therefore, it is suitable for downsizing. As in the example of Patent Document 1, the problem of enlargement due to the juxtaposition in the lateral direction is solved.

  FIG. 1 shows a configuration example of the guide device for the two guide rollers R1 and R2 in the front-rear direction (as viewed from the front door side). Similarly, the guide device for the one guide roller R3 in the left-right direction is illustrated. The present invention can also be applied to. An embodiment for this purpose is shown in FIG.

  The configuration in FIG. 4 is basically the same as that in FIG. 1 and therefore detailed description is omitted, but the base B is the same as the base in FIG. However, the motor 34, the linear guide 35, and the left and right connecting metal fittings 36 have the same functions as the depth direction parts shown in FIG. Further, the right and left connecting bracket 36 is different from FIG. 1 in that only one surface is used because the guide roller for applying a thrust is only R3.

  According to the examination result of the present invention, the ratio of the distance from the lever rotation shafts 32R1 and 32R2, which are fulcrums, to the active guides (spring rods 38R1 and 38R2 and the left and right coupling fittings 36) or the damping devices 21R1 and 21R2 is 1 to 3. 1 to 4 is good.

  As a result, lateral vibration at a high frequency is transmitted from the motor 34 to the guide rollers R1 and R2 via the levers LR1 and LR2, but this portion has a large lever ratio (the distance from the viewpoint to the action point is long). Therefore, the movement distance is large and high-sensitivity vibration suppression can be expected. On the other hand, the vibration caused by the wind pressure due to the passing of the high-speed elevator car is a sudden but low frequency vibration. In this case, even if the lever ratio is low, it can be expected that the fluctuation amount is suppressed by the sliding resistance of the damping devices 21R1 and 21R2.

5: linear motion damping device 6: guide rail 9: guide device 9G: arm 9A: guide base 9E: guide roller 12: actuator 21: linear motion damping device 21A, 21B: rotary bearings 21R1, 21R2, 21R3: damping device 31R1, 31R2, 31R3: rotation support shafts 32R1, 32R2, 32R3: lever rotation shafts 33R1, 33R2, 33R3: support portion 34: motor 35: linear guide 36: left and right connecting brackets 37R1, 37R2, 37R3: springs 38R1, 38R2, 38R3: spring rods 100: Car 104: Floor 105: Front doors 110, 111, 112, 113, 114: Guide device 120: Guide rail F1: Upper frame F2: Standing frame F3: Lower frame B: Bases LR1, LR2, LR3 ,: Lever R1, R2, R3: guide rollers

Claims (5)

An elevator guide device including guide rollers provided on the upper, lower, left, and right sides of the elevator car and supported by the guide rail on the structure side,
On a base fixed to the car, a lever rotatably attached by a first rotating shaft, an attenuation device provided on the lever, and a lever provided on the lever for rotatably attaching the guide roller And an active guide that is provided farther than the second rotation shaft and is provided with a thrust in a direction that suppresses vibration generated in the car and rotates the lever .
For the lever, the distance from the first rotation axis of the lever to the point where the active guide applies thrust to the lever is longer than the distance from the first rotation axis of the lever to the damping device. with that,
The elevator guide, wherein the lever is disposed in a height direction, the damping device is disposed below the first rotation shaft of the lever, and the active guide is provided on an upper end side of the lever. apparatus. The elevator guide device according to claim 1,
The guide rollers include two sets of guide rollers arranged in the depth direction with respect to the elevator front door,
For each guide roller, on a base fixed to the car, a lever rotatably attached by a first rotating shaft, a damping device provided on the lever, and provided on the lever, the guide A second rotation shaft for rotatably mounting the roller;
An active guide, which is provided farther than the second rotating shaft and is provided with a thrust in a direction to suppress vibration generated in the car to turn the lever, is common to the two sets of levers. An elevator guide device characterized in that it is provided. The elevator guide device according to claim 1,
The distance from the first rotation axis of the lever to the point where the active guide applies thrust to the lever is three to four times the distance from the first rotation axis of the lever to the damping device. Elevator guide device characterized by that. The elevator guide device according to any one of claims 1 to 3 ,
The active guide is composed of a motor driven by a signal from an acceleration sensor, a linear guide that converts the rotation of the motor into a linear distance, and a connecting bracket that rotates the lever using the movement distance of the linear guide as a thrust. An elevator guide device characterized by being configured. The elevator guide device according to claim 2,
The active guide includes a motor driven by a signal from an acceleration sensor, a linear guide that converts the rotation of the motor into a linear distance, and a left and right connecting bracket that rotates the lever using the moving distance of the linear guide as a thrust. An elevator guide device characterized in that the thrust applied to the two sets of levers by the left and right connecting brackets is such that when the thrust is applied to one lever, the thrust applied to the other lever is released. .

Images