JP2018104175A - Governor device and elevator - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a governor device and an elevator capable of inhibiting repetition of landing adjustments or occurrence of an event not leading to elimination of a step with a simple configuration.SOLUTION: A governor rope system comprises a friction attenuation device 15 which gives friction attenuation to the governor rope system during propagation of vibration from a cage 3 side to attenuate a natural frequency of the governor rope system on the basis of a finding that a resonance phenomenon results from closeness between a natural frequency of the governor rope system and a natural frequency of a cage system.SELECTED DRAWING: Figure 2

Description

  The present invention relates to a governor device and an elevator equipped with the governor device.

  As a background art in this technical field, there is International Publication No. WO2011-148411 (Patent Document 1). In this publication, in an electronic safety elevator that detects the position of a car moving on a plurality of floors in a hoistway, a pulse generator that outputs a pulse according to the amount of movement of the car, and the car A position detection device that detects that the predetermined position has been reached, and the pulse is counted after the predetermined position is detected. When the counted value becomes a previously stored value, the stored value corresponds to the stored value. An electronic safety elevator characterized by comprising a safety controller that outputs a command issued is described.

International Publication Number WO2011-148411

  However, in the elevator described in Patent Document 1, as a pulse generator for accurately grasping the position of the car, in a configuration including a governor encoder provided in the governor, when a step occurs in the car and the floor level, It was newly found that even if control to cancel the landing level difference of the car is performed by the floor alignment correction function, the vertical landing adjustment is repeated and an event that does not lead to the level difference cancellation occurs.

  Therefore, the present invention provides a governor device and an elevator that can suppress the occurrence of an event of repeated landing adjustment.

  In order to solve the above-mentioned problem, the present invention provides a governor device comprising a governor rope connected to a car that can be lifted and lowered in a hoistway, and a governor encoder that outputs data for detecting the position of the car. A friction damping device that attenuates the vibration of the governor rope by friction damping is further provided.

  ADVANTAGE OF THE INVENTION According to this invention, the governor apparatus and elevator which can suppress generation | occurrence | production of the event which repeats landing adjustment can be provided. Problems, configurations, and effects other than those described above will be clarified by the following description of embodiments.

It is a schematic block diagram of the elevator by one Example of this invention. It is a principal part enlarged view of the governor shown in FIG. FIG. 3 is a plan view of the friction damping device shown in FIG. 2.

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

  FIG. 1 is a cross-sectional view showing a main part of an elevator according to an embodiment of the present invention.

  The elevator has a structure in which a car 3 that can be moved up and down along the guide rail 2 in the hoistway 1 and a counterweight 4 that moves up and down while balancing the car 3 are connected by a main rope 5. doing. A main rope 5 is wound around a hoisting machine 6 having an electric motor, and the car 3 and the counterweight 4 are driven to move up and down in different directions via the main rope 5 by the hoisting machine 6. Further, the lower part of the car 3 and the lower part of the counterweight 4 are also connected by a compen- sion rope 7.

  The car 3 is provided with an emergency stop device 8 that holds the guide rail 2 in an emergency and performs an emergency stop. Moreover, the governor apparatus for detecting the state which drives this emergency stop apparatus 8 is comprised.

  In this governor device 26, an endless governor rope 11 is hung between a top pulley 9 and a lower pulley 10 that are rotatably supported at the top and bottom of the hoistway 1, and the emergency stop device 8 is connected to the governor rope 11. Has been.

  Further, the governor device is provided with a governor encoder 12, and a control unit (not shown) takes in a pulse signal output from the governor encoder 12 and controls the landing step of the car 3.

  FIG. 2 is an enlarged view showing the vicinity of the lower pulley 10 in the governor device 26 described above.

  A main body 14 having a governor weight held between the pair of guides 13A and 13B is provided, and the lower pulley 10 is rotatably supported by the main body 14.

  Further, in order to prevent the governor rope 11 from being detached from the lower pulley 10, the body portion 14 is provided with a pin 25 outside the circumference of the lower pulley (in a direction away from the rotation shaft).

  Further, a pair of frictional damping devices 15 that are substantially symmetrical and have the same configuration are attached in the vicinity of the guides 13A and 13B in the lower part of the main body portion 14.

  The friction damping device 15 includes a support bracket 17 attached by bolts 16 in the vicinity of the guides 13A and 13B at the lower part of the main body 14, and a gripping member 19 connected to the support bracket 17 by connection bolts 18 and the like. Configured. Further, a detailed configuration of the friction damping device 15 will be described with reference to FIG.

  FIG. 3 is a plan view of the friction damping device 15 shown in FIG.

  The gripping member 19 in the friction damping device 15 is composed of a pair of gripping members 19A and 19B arranged opposite to each other, and the respective intermediate portions in the longitudinal direction are supported on the support bracket 17 shown in FIG. 2 by the rotating shafts 20A and 20B. .

  A through-hole formed in a part of the support bracket 17 positioned between the gripping members 19A and 19B and a connecting bolt 18 inserted into the spring 21 are inserted into the left ends of the gripping members 19A and 19B. Nuts 22 and 23 arranged so as to sandwich the gripping member 19B and the support bracket 17 are screwed into the opposite head side.

  On the other hand, friction members 24A and 24B are attached to the facing surfaces of the right end portions of the gripping members 19A and 19B, and a part of the guide 13A is sandwiched between the friction members 24A and 24B. Moderate frictional damping.

  This pinching is performed by adjusting the positions of the nuts 22 and 23 as appropriate, and then holding the left side ends of the gripping members 19A and 19B so that the right side ends are opened by the operator, and the right side of the gripping members 19A and 19B. The guide 13A is held between the side ends as shown in the figure. Even after the gripping state is achieved, when the positions of the nuts 22 and 23 are adjusted, the spring 13 is brought into a gripping state in which the guide 13A can be frictionally attenuated between the right side ends of the gripping members 19A and 19B.

  In this way, by sandwiching a part of the guide 13A between the friction members 24A and 24B, two surfaces for generating a frictional force are provided for one guide 13A, and a large frictional force can be generated. .

  As described above, in the elevator equipped with the governor encoder 12, the pulse signal output from the governor encoder 12 is taken into the control unit, and the number of pulses is calculated, so that the car level and the floor level are about 10 mm, for example. The control unit determines that the above step is generated. Then, although it was tried to eliminate the landing step difference, it was newly found that an event that does not lead to the step difference generation occurs by repeatedly adjusting the landing in the vertical direction.

  As a result of analyzing this phenomenon, when the elevator has a long stroke, the natural frequency of the governor rope system and the natural frequency of the passenger car system approximate, so the resonance phenomenon of the governor rope system with respect to the landing vibration of the passenger car system It was elucidated that it was caused by the occurrence.

  That is, when the number of pulses output by the governor encoder 12 is calculated and the landing level difference of the car is attempted, for example, if the car system vibrates due to the car start / stop vibration, the natural frequency of the governor rope system is calculated. The governor rope system resonates because it approximates the natural frequency of the car system.

  Then, the vibration of the governor rope 11 is transmitted to the governor encoder 12 and output as a pulse. If the number of pulses is calculated by the control unit and determined to be a step greater than the step where the landing step elimination is attempted, for example, a step of about 10 mm or more, it is determined that the landing step is not eliminated, An attempt is made to adjust the landing again.

  In this way, the landing adjustment occurs repeatedly, and an event that does not lead to the elimination of the step occurs.

  Furthermore, in the elevator provided with the compen- sion rope 7, the natural frequency of the governor rope system and the natural frequency of the car system are more approximate values than those of the elevator not provided with the compen- sion rope 7. Resonance phenomenon is more likely to occur.

  Therefore, in this elevator, the friction damping device 15 is provided in the governor rope system as described above.

  When the landing vibration of the car system is transmitted to the governor rope system, the response magnification of the governor rope system can be changed, that is, attenuated by the friction damping of the friction damping device 15, and the vibration to the resonance phenomenon of the governor rope system by the car system. Response can be suppressed.

  Moreover, since it can carry out without changing the structure of the passenger car system which is a heavy article, a structure can be simplified.

  For this reason, when there is a step between the car 3 and the floor level, an attempt is made to eliminate the landing level difference of the car 3 based on the data from the governor encoder 12, but the vertical landing adjustment is conventionally performed. The occurrence of repeated events can be suppressed, and the occurrence of events that do not lead to step resolution can be suppressed.

  Further, this elevator is provided with a friction damping device 15 in the vicinity of the governor weight provided on the lower end side of the governor rope 11 in the governor rope system. Therefore, since the conventional basic configuration is not changed, the resonance phenomenon with the car system is suppressed with a simple configuration.

  The friction damping device 15 described above is a friction damping, that is, a device that attenuates the response vibration of the governor rope system by applying a load by friction, so that it can be damped regardless of the speed of the governor weight. Although the landing step elimination operation by the micro operation is slow, the friction damping device 15 can effectively give a damping effect to such a movement.

On the other hand, by adjusting the weight of the governor rope system or changing the rope type and rope diameter, it is possible to provide a difference in the natural frequency of the governor system relative to the car system. It may involve changes and is not realistic.
Further, as shown in FIG. 3, the friction damping device 15 is configured such that the guide 13A is sandwiched and gripped between the right side ends of the gripping members 19A and 19B. Since two surfaces are provided, a large frictional force can be generated.

  Further, since the rotary shafts 20A and 20B are positioned on the friction members 24A and 24B side (right side in the drawing) of the gripping members 19A and 19B with respect to the intermediate point, a larger frictional force is generated due to the principle of the lever. It is possible to make it.

  As described above, the friction that can generate a larger frictional force so that the number of pulses output from the governor encoder 12 due to the resonance phenomenon is less than the number of pulses corresponding to the step where the landing step elimination is attempted. By damping the friction with the damping device 15, the response magnification of the governor rope system can be reduced.

  As described above, according to the present invention, the governor rope system is provided with the friction damping device that attenuates the response vibration of the governor rope system to the vibration from the car side by friction damping.

  According to such a configuration, since the natural frequency of the governor rope system and the natural frequency of the car system are close to each other, when attempting to eliminate the landing level difference of the car 3, the vertical landing adjustment is performed. Based on the elucidation that it is caused by the occurrence of an event that does not lead to the elimination of the level difference, the resonance phenomenon of the governor rope system is suppressed with a simple configuration compared to the case where a preventive measure is applied to the car system. be able to.

  That is, it is possible to suppress the occurrence of an event in which the vertical landing adjustment is repeated or the level difference is not eliminated when attempting to eliminate the level difference of the car 3.

  In addition to the above-described configuration, the governor device includes guides 13A and 13B arranged at the lower part of the hoistway, a main body portion 14 having a governor weight guided along the guides 13A and 13B, and a main body portion 14. The pulley 10 supported so that rotation was possible, the lower end side of the governor rope 11 was wound around the pulley 10, and the friction damping device 15 was provided between the main-body part 14 and guide 13A, 13B.

  According to such a configuration, the response vibration of the governor rope system can be frictionally attenuated with a simple configuration, and the occurrence of the resonance phenomenon of the governor rope system with respect to the car system can be suppressed.

  In addition, this invention is not limited to the Example mentioned above, Various modifications are included. For example, the above-described embodiment has been described in detail for easy understanding of the present invention, and the above-described friction damping device 13 is not necessarily limited to the illustrated configuration.

DESCRIPTION OF SYMBOLS 10 Lower pulley 11 Governor rope 12 Governor encoder 13A, 13B Guide 14 Main-body part 15 Friction damping apparatus 26 Governor apparatus

Claims (7)

In a governor apparatus comprising a governor rope connected to a car that can be raised and lowered in a hoistway, and a governor encoder that outputs data for detecting the position of the car,
A governor device further comprising a friction damping device that attenuates the vibration of the governor rope by friction damping.   The governor device includes a guide disposed at a lower portion of the hoistway and a main body portion having a governor weight guided along the guide, and the friction damping device is provided between the main body portion and the guide. The governor device according to claim 1.   The governor apparatus according to claim 1, wherein the friction damping mechanism generates a frictional force by gripping a part of the guide.   The friction damping mechanism includes a pair of gripping members for gripping a part of the guide, a rotation shaft that rotatably supports the gripping member on the main body, and an elastic force so that one end of the gripping member is separated. 2. The governor device according to claim 1, further comprising: a spring that provides a frictional force; and a friction member that is provided at the other end of the gripping member and generates a frictional force between the guide and the guide.   The governor apparatus according to claim 1, further comprising a pin that prevents the governor rope from being detached from the pulley outside the outer periphery of the pulley.   The governor device according to claim 1, wherein a compen- sion rope having the other end connected to the lower part of the counterweight is connected to the lower part of the car. A car that can move up and down in a hoistway, a governor device having a governor rope connected to the car, and a governor encoder that is attached to the governor and outputs data for detecting the position of the car. In the elevator equipped,
The said governor apparatus is further provided with the friction damping apparatus which attenuates the vibration of the said governor rope system by friction damping.

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