JP5007079B2 - Governor equipment for passenger transport systems - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a governor device of an eccentric-ring shaped and thin passenger transport system installable in a restricted space on the side of the pulley for a belt. <P>SOLUTION: This governor device 11 of the passenger transport system comprises a rotary body 12a, a base 14 installed on the rotary body 12a, and an eccentric ring 13 installed on the base 14 rotatably through a rotating mechanism 14a and having a gravity center at the position eccentric from the rotating center of the rotary body 12a. The base 14 is connected to the eccentric ring 13 by a restoring mechanism 15. The restoring mechanism 15 provides a restoring force to the restoring position to the eccentric ring 13. A restoring stopper 16 restrains the eccentric ring 13 at the restoring position. A detection switch 18 brought into contact with the cam shape 13a of the eccentric ring 13 when the eccentric ring 13 is operated is installed near the eccentric ring 13. A control device 20 stops the passenger transport system by signals from the detection switch 18. <P>COPYRIGHT: (C)2007,JPO&amp;INPIT

Description

Industrial application fields

  The present invention relates to a governor device for a passenger transportation system provided in a driving machine that drives a passenger transportation system such as a passenger conveyor.

Conventional technology

Figure 7 is shows a structure diagram of a conventional governor, 8, 9, conventional passenger conveyor respectively (escalator, a moving walkway) front view and a side view of a governor of a passenger transport system, such as Is shown. In FIG. 7, 1 is a weight that slides outward in the circumferential direction, 2 is a spring body that presses the weight 1 toward the center of rotation with a predetermined pressure, 3 is a guide portion that guides the weight 1 and the spring body 2, and 4 is a weight 1 And a base 5 for fixing the spring body 2 and the guide portion 3 and a detection switch 5 for detecting the number of rotations of the base 4. 8 and 9, the base 4 is attached to the input shaft of the speed reducer 6 together with the pulley 7, and the pulley 7 is a pulley attached to the rotor shaft of the electric motor 10 installed on the top of the speed reducer 6. 9 and a belt 8. Then, the power of the electric motor 10 is transmitted to the speed reducer 6 through the pulley 9, the belt 8, and the pulley 7.

  In the governor device of the conventional passenger transport system configured as described above, the speed is detected by the weight 1 sliding by centrifugal force. That is, when the speed of the passenger transport system increases and the rotational speed of the rotating body 4 exceeds a predetermined value, the weight 1 slides to the outer circumferential direction, the detection switch 5 is activated, and the passenger transport system is stopped. It is. In general, the detection switch 5 uses a contact method in which the actuator portion is actuated by being moved down by the weight 1, but a non-contact detection method is also possible.

  In the governor device of the conventional passenger transport system, the rotation speed of the base 4 attached to the input shaft of the speed reducer 6 is fast, and there is a possibility that the detection switch is directly hit against the weight 1 and breaks. If the introduction taper portion having a long length of nearly 90 degrees over the half circumference is provided in the weight, it will not break even if the detection switch is directly hit. However, the long weight 1 is heavy and it is dangerous to operate it by centrifugal force at high speed rotation. Further, the non-contact type detection switch has a problem in that it is not effective when there is an electrical failure, and the safety is impaired.

  SUMMARY OF THE INVENTION The present invention has been made to solve the above-described problems. The governor device for a passenger transport system is reliable and does not impair safety even when a detection switch is directly operated on the governor device for a passenger transport system. The purpose is to obtain.

  The present invention relates to a governor device for a passenger transport system, wherein a rotating body, a base attached to the rotating body, and a base that is rotatably attached to the base via a rotating mechanism, has a flat donut shape, and An eccentric ring having a center of gravity at a position eccentric with respect to the rotation center of the rotating body and acting as a cam during operation, and the base and the eccentric ring are connected to each other in the restoring position direction. A restoring mechanism that applies a restoring force to be directed; a restoring stopper that restricts the eccentric ring biased in the restoring direction by the restoring mechanism to a restoring position with respect to the base; and provided in the vicinity of the eccentric ring, when the eccentric ring is in operation. A detection switch that contacts the cam shape of the ring, and a control device that stops the passenger transportation system by a signal of the detection switch; A governor of a passenger transport system, characterized in that it includes.

  The present invention is the governor device for a passenger transport system, wherein the rotation mechanism includes a rotation shaft provided on the base.

  The present invention is the governor device for a passenger transport system, characterized in that the base is flat, has a through hole in the center, and the base has a donut-shaped hollow structure.

  According to the present invention, a hole is provided in the base or a balance weight is provided, and the center of gravity of the entire governor device is located at the center of rotation when the eccentric ring is returned by the force of the restoring mechanism. It is the governor apparatus of the passenger conveyance system characterized.

  The present invention is the governor device for a passenger transport system, wherein a hole is provided in the base or the eccentric ring, and the restoring mechanism is housed in the base or the eccentric ring.

  The present invention is a governor device for a passenger transport system, characterized in that an adjustment fitting for adjusting an initial elongation of the restoration mechanism is attached to an attachment portion of the restoration mechanism to the base or the eccentric ring.

Passengers present invention, the restoring mechanism comprises a spring, said adjustment bracket, wherein the spring is in the form such as to function as a spring receiver so as not protrude deformed shape by centrifugal force It is a governor device of a transportation system.

  The present invention is the governor device for a passenger transport system, wherein the cam shape of the eccentric ring is formed on the outer peripheral side of the eccentric ring.

  The present invention is the governor device of the passenger transport system, wherein the cam shape of the eccentric ring is formed on the inner peripheral side of the eccentric ring.

  In the present invention, the axis of rotation of the rotating body is inclined laterally, and either the eccentric ring or the restoration stopper is made of a quiet material such as a resin material, or the eccentric ring and the restoration stopper A governor device for a passenger transport system, characterized in that an elastic member is provided on one of the surfaces.

  The present invention is characterized in that a line segment connecting the center of the rotating body and the center of gravity of the eccentric ring and a line segment connecting the center of gravity of the eccentric ring and the center of the rotation mechanism of the eccentric ring form an obtuse angle. The governor device of the passenger transport system.

  The present invention is characterized in that the center of gravity of the eccentric ring is in the vicinity of a straight line connecting the center of the rotating body and the center of the rotating mechanism of the eccentric ring, and is provided in the vicinity of the center of the rotating body. It is a governor device of a passenger transportation system.

  The present invention is the governor device of the passenger transport system, wherein the rotating mechanism of the eccentric ring has a virtual rotating shaft provided outward from the base.

  In the present invention, the eccentric ring has two elongated holes provided along an arc centered on the virtual rotation axis, and the base slides corresponding to each elongated hole. Passenger transportation, wherein the sliding pin of the base slides in the elongated hole of the eccentric ring so that the eccentric ring rotates about the virtual rotation axis with respect to the base System governor device.

  The present invention further includes two link mechanisms having one end attached to the eccentric ring and the other end attached to the base, and a longitudinal axis arranged along a straight line toward the center of the virtual rotation axis, In the governor device of the passenger transport system, the eccentric ring and the base are connected to each other via the link mechanism so that the eccentric ring rotates about the virtual rotation axis with respect to the base. is there.

Action

  In the governor device of the passenger transport system of the present invention, the centrifugal force is proportional to the square of the speed and proportional to the mass. Therefore, when the rotational speed of the rotating body is increased and the speed is increased, the normal operation (100% speed) is achieved. The centrifugal force of the eccentric ring at the time of abnormality (when the speed is set to 110%) can be increased to 1.2 times the centrifugal force of the eccentric ring, and the operating sensitivity can be increased.

  And the above-mentioned tendency of expansion of centrifugal force is a relative story. With respect to the absolute magnitude of the centrifugal force, the center of gravity of this eccentric ring is usually near the center of rotation, so the centrifugal force is very small. Therefore, since the restoring mechanism is not so strong and the restoring force is small, it can be easily assembled and a soft spring multiplier can be extended and used, so that fine adjustment of the restoring force is easy.

  Since the center of gravity of this eccentric ring is normally near the center of rotation, the radius of rotation increases during operation and the centrifugal force significantly increases compared to normal operation, so once it starts to move, it accelerates rapidly until it hits the operating stopper. It will move. Therefore, since the eccentric ring operates instantaneously and pushes the detection switch, the detection switch can be pushed all at once. Coincidentally, when it is operated when the cam shape has a downward slope, it cannot be pushed completely, but since it can be pushed completely after the next rotation, there is no problem. Note that the detection switch can be reliably detected by using a switch that does not return when it is fully pushed.

Furthermore, the control device that has received the signal from the detection switch stops the passenger transportation system. In general, by the power cut, and so as to stop by the brake, since the motor is attached flywheel, it stopped slowly decelerating. The eccentric ring begins to return to the restoring stopper from the point when the centrifugal force gradually weakens during the deceleration and the force of the restoring mechanism exceeds. At this time, since the center of rotation is deviated from the normal time, the centrifugal force is increased, and the rotational speed set at the time of operation does not return, but the rotational speed lowers and starts to be restored. Therefore, even if the eccentric ring fluctuates up and down at the limit of the set number of rotations, the eccentric ring moves to the end when activated, and does not return easily after being activated once, so stable operation can be expected.

BEST MODE FOR CARRYING OUT THE INVENTION

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

First Embodiment FIGS. 1 to 4 are structural views of a governor device of a passenger transport system showing a first embodiment of the present invention.

  In FIG. 1, a governor device 11 of a passenger transport system is rotatably attached to a rotating body comprising an input shaft 12a, a base 14 attached to the rotating body, and a rotating mechanism comprising a rotating shaft 14a. The eccentric ring 13 is provided. Among these, the eccentric ring 13 has a flat donut shape, and has a center of gravity at a position eccentric with respect to the rotating body (input shaft 12a) in the restoring position, and has a cam shape 13a that acts as a cam during operation. Yes. The restoring mechanism 15 is connected to the base 14 and the eccentric ring 13, and the restoring mechanism 15 includes a spring or the like that applies a restoring force to the eccentric ring 13 toward the restoring position. Further, the restoration stopper 16 restricts the eccentric ring 13 biased in the restoration direction by the restoration mechanism 15 with respect to the base 14 to the restoration position. Further, a detection switch 18 that abuts on the cam shape 13a of the eccentric ring 13 when the eccentric ring 13 is operated is provided in the vicinity of the eccentric ring 13. The detection switch 18 is controlled to stop the passenger transport system by a signal from the detection switch 18. A device 20 is connected.

  That is, in the governor device 11 of the passenger transport system, the input shaft 12a of the speed reducer 12 is to detect the rotational speed. The eccentric ring 13 has a flat donut shape, and its center of gravity is arranged at a position slightly shifted from the rotation center 11a, and when the eccentric ring 13 is operated, the outer peripheral side of the eccentric ring 13 becomes a cam shape 13a. It has a shape. The base 14 supports the eccentric ring 13 so as to be rotatable in a flat plane direction by a rotation mechanism including a rotation shaft 14 a and is attached to the input shaft 12 a of the speed reducer 12. In relation to the position of the rotation center 11a, the rotation center 11a, the center of gravity, and the rotation shaft 14a are set to an obtuse angle with the center of gravity of the eccentric ring 13 as the apex angle. A restoring mechanism 15 made of a spring or the like applies a restoring force to the eccentric ring 13 from the base 14. The restoration stopper 16 limits the operation of the base 14 and the eccentric ring 13 when the restoration mechanism 15 returns the eccentric ring 13 with a restoring force. The operation stopper 17 limits the operation of the base 14 and the eccentric ring 13 when the eccentric ring 13 is operated when the centrifugal force due to the rotation of the eccentric ring 13 exceeds the restoring force of the restoring mechanism 15. The detection switch 18 is attached to the structure 19 and is disposed so as to contact the cam shape 13a of the eccentric ring 13 when the eccentric ring 13 is operated. The control device 20 stops the passenger transportation system according to the signal from the detection switch 18.

  The base 14 of the governor device 11 is flat and has a through hole in the center, and the base 14 also has a donut-shaped hollow structure in which a hole is formed in the central portion. The base 14 is provided with a hole 14b for balancing, and when the eccentric ring 13 is returned by the force of the restoring mechanism 15, the center of gravity 11a of the entire governor device 11 becomes the position of the rotation center. ing. Instead of arranging the punch hole 14b in the base 14, the base 14 is provided with a balance weight, and the center of gravity 11a of the entire governor device 11 is positioned at the center of rotation when the eccentric ring 13 is returned by the force of the restoring mechanism 15. You may make it become.

  Further, when the eccentric ring 13 is operated, the outer peripheral side of the eccentric ring 13 becomes a peripheral shape that becomes the cam shape 13a, but when the eccentric ring 13 is operated, the inner peripheral side of the eccentric ring 13 becomes the cam shape 13a. Good.

  The restoring mechanism 15 of the governor device 11 is accommodated in the flat surface of the eccentric ring 13 by providing a hole 13 d in the eccentric ring 13. On the other hand, the restoring mechanism 15 may be accommodated in the flat surface of the base 14 by providing a hole in the base 14.

  Further, the restoring mechanism 15 is attached to an attachment portion to the eccentric ring 13 via an adjustment fitting 13b that adjusts the initial elongation of the restoring mechanism 15. The adjustment fitting 13b has a receiving shape 13c that functions as a spring support so that the restoring mechanism 15 is not deformed by a centrifugal force and is not popped out. The restoration mechanism 15 may be attached to the attachment portion of the base 14 via an adjustment fitting that adjusts the initial elongation of the restoration mechanism 15.

  Further, when the rotating shaft of the input shaft 12a of the speed reducer 12 to which the governor device 11 is attached is inclined sideways, that is, when the rotating shaft of the input shaft 12a is not oriented in the vertical direction, the surface of the restoration stopper 16 Is provided with a resin material 16a.

  Next, the operation of the governor device of the passenger transport system in the first embodiment will be described.

  First, in the governor device 11, since the centrifugal force is proportional to the square of the speed and proportional to the mass, if the rotational speed of the input shaft 12a of the speed reducer 12 is increased to increase the speed, normal operation (100% speed) The centrifugal force of the eccentric ring 13 at the time of abnormality (when the speed is set to 110%) can be increased by 1.2 times with respect to the centrifugal force of the eccentric ring 13 and the operating sensitivity can be increased.

  And the above-mentioned tendency of expansion of centrifugal force is a relative story. Regarding the absolute magnitude of the centrifugal force, since the center of gravity of the eccentric ring 13 is normally near the rotation center 11a, the centrifugal force is very small. Therefore, since the restoring mechanism 15 is not so strong and has a low restoring force, it can be easily assembled, and a soft spring multiplier can be extended and used, so that a fine adjustment of the restoring force is easy.

Since the center of gravity of the eccentric ring 13 is normally near the rotation center 11a, the rotation radius is increased during operation and the centrifugal force is significantly increased as compared with the normal operation. Once it starts moving, it accelerates rapidly and moves at high speed until it hits the operating stopper 17. Therefore, since the eccentric ring 13 immediately pushes the detection switch 1 8 operates, can as possible press the detection switch 18 at once. Coincidentally, when the cam shape 13a is actuated when it has a downward slope, the cam shape 13a cannot be pushed completely. The detection switch 18 can be reliably detected by using a switch that does not return when latched.

  The center of gravity of the eccentric ring 13 becomes an obtuse angle with respect to the rotation center and the rotation axis 14a of the eccentric ring 13, and the center of gravity of the eccentric ring 13 is close to a straight line connecting the rotation center and the rotation axis 14a of the eccentric ring 13. The inertial force of the eccentric ring 13 due to acceleration / deceleration generates a moment of rotation opposite to the rotation acceleration / deceleration with respect to the rotation axis 14a. . The moment due to this inertial force acts so as to cancel the moment due to the rotational inertia of the eccentric ring 13. Therefore, the acceleration / deceleration hardly affects the operation of the eccentric ring 13.

  Furthermore, in FIG. 4, the control apparatus 20 which received the signal of the detection switch 18 stops a passenger conveyance system. Generally, when the power is cut, the brake 21 stops the operation. Since the flywheel 22b is attached to the output shaft 22a of the electric motor 22, the motor slowly decelerates and stops. The eccentric ring 13 begins to return to the restoration stopper 16 from the point when the centrifugal force gradually weakens during the deceleration and the force of the restoration mechanism 15 exceeds. At this time, since the center of rotation is deviated from the normal time, the centrifugal force is increased, and the rotational speed set at the time of operation does not return, but the rotational speed lowers and starts to be restored. Therefore, when the upper and lower ends of the set rotational speed are fluctuating up and down, for example, the belt 23 and the pulleys 22c and 12b between the output shaft 22a of the electric motor 22 and the input shaft 12a of the speed reducer 12 begin to slip due to deterioration over time, and thus the rotational speed. Even if it is staggered, the eccentric ring 13 will move to the end when it is activated and will not return easily once it has been activated.

  Further, since the base 14 as well as the eccentric ring 13 has a donut-shaped hollow structure, the input shaft 12a can be attached without obstructing. The base 14 is provided with a hole 14b. When the eccentric ring 13 is returned by the force of the restoring mechanism 15, the center of gravity of the entire governor device 11 is the position of the rotation center 11a. No power to touch around.

  Further, since the restoring mechanism 15 of the governor device 11 is housed in the flat surface in the hole 13d of the eccentric ring 13, it has a thin and flat structure.

  In addition, since the restoring mechanism 15 is attached to the eccentric ring 13 via the adjustment fitting 13b, the initial elongation can be adjusted so that the eccentric ring 13 operates at an appropriate rotational speed. And since the adjustment metal fitting 13b becomes the receiving shape 13c, even if the decompression | restoration mechanism 15 receives strong centrifugal force, it is hold | suppressed so that a shape may deform | transform and may not jump out.

  Further, when the rotation shaft of the input shaft 12a of the speed reducer 12 to which the governor device 11 is attached is inclined to the side, the resin material 16a is disposed on the surface of the restoration stopper 16, so that the gravity is eccentric before the operation. 13 intermittently generates an intermittent sound with the restoration stopper 16, which can be suppressed.

  As described above, according to the first embodiment, the centrifugal force is increased, and the sensitivity of operation can be increased. Therefore, the operation can be performed with high accuracy.

  The restoring mechanism 15 is not so strong and has a low restoring force, can be easily assembled, can be used by extending a soft spring multiplier, and it is easy to finely adjust the restoring force. Can be adjusted.

  Note that the inertia force of the eccentric ring 13 due to excessive deceleration hardly generates a moment with respect to the rotating shaft 14a, and normal acceleration / deceleration does not affect the operation of the eccentric ring 13. Therefore, for example, even if the acceleration is suddenly started, the detection switch There is no problem that 18 enters.

  Furthermore, the eccentric ring 13 moves to the end when it operates, and once it is operated, it does not return easily, and stable operation can be expected.

  In addition, the eccentric ring 13 and the base 14 have a donut-shaped hollow structure, and the input shaft 12a is attached without obstructing the governor device 11 in a narrow space between the speed reducer 12 and the pulley 12b. Can be attached. The base 14 is provided with a punch hole 14b. When the base 14 is rotating normally, no contact force is generated, so that it does not become a vibration source, and silence can be maintained.

  Further, since the restoring mechanism 15 of the governor device 11 is housed in the flat surface of the eccentric ring 13 and has a thin and flat structure, the governor device 11 places the governor device 11 between the speed reducer 12 and the pulley 12b inside. Can be installed in a narrow space.

  In addition, the restoring mechanism 15 is attached to the eccentric ring 13 via the adjustment fitting 24, and the initial elongation can be adjusted so that the eccentric ring 13 operates at an appropriate rotational speed, so that it can be operated with high accuracy. The adjustment fitting 13b has a receiving shape 13c, and even if the restoring mechanism 15 receives a strong centrifugal force, the shape is deformed and is held down so that it does not jump out, so a stable operation can be expected.

  In addition, since the resin material 16a is arranged on the surface of the restoration stopper 16 and the intermittent sound can be suppressed between the restoration stopper 16 and the operation, silence during operation can be improved.

  Although not described in the present embodiment, it is also possible to provide a contact type mechanism that operates starting from the fact that the eccentric ring 13 is brought into contact with the eccentric ring 13 to fall down, for example, a latch mechanism for preventing reverse rotation (not shown). is there.

Second Embodiment FIG. 5 is a structural diagram of a governor device of a passenger transport system showing a second embodiment of the present invention.

  In the governor device 31 of the present embodiment, only the configuration of the rotation mechanism having the virtual rotating body 33 and the virtual rotating shaft 32 is different, and the other configurations are substantially the same as those of the first embodiment. 5, the same parts as those in the embodiment shown in FIG. 1 are denoted by the same reference numerals, and detailed description thereof is omitted. Further, the same reference numerals are used for the description, and the same reference numerals are used for the description.

In FIG. 5, the rotation mechanism of the eccentric ring 13 has a virtual rotation shaft 32 provided outward from the base 14.
The eccentric ring 13 has two elongated holes 34a and 34b provided along an arc centered on the virtual rotation axis 32, and the base 14 corresponds to the two elongated holes 34a and 34b. And two sliding pins 35a and 35b that slide respectively.
The sliding pins 35a and 35b of the base 14 slide in the elongated holes 34a and 34b of the eccentric ring 13, respectively, so that the eccentric ring 13 rotates about the virtual rotating shaft 32. ing.

  The center of gravity of the eccentric ring 13 is arranged such that a line segment connecting the rotation center 11a and the center of gravity of the eccentric ring 13 and a line segment connecting the center of gravity of the eccentric ring 13 and the virtual rotation axis 32 form an obtuse angle. The eccentric ring 13 is connected to the base 14 by a virtual rotator 33. Note that the virtual rotation shaft 32 is a solid rotation shaft provided away from the base 14.

  The virtual rotator 33 described above is attached to the base 14 with two elongated holes 34a and 34b opened in the eccentric ring 13 along an arc centered on the virtual rotational axis 32, and the two elongated holes 34a, It consists of two sliding pins 35a and 35b which slide along 34b.

  Next, operation | movement of the governor apparatus of the passenger conveyance system in 2nd embodiment is demonstrated.

  In the virtual rotating body 33, the two sliding pins 35a and 35b attached to the base 14 slide along the two elongated holes 34a and 34b formed in the eccentric ring 13, so that the eccentric ring 13 is It rotates around a virtual rotation axis 32 that is separated from the base 14 and has no entity.

  The center of gravity of the eccentric ring 13 is arranged such that a line segment connecting the rotation center 11a and the eccentric ring 13 and a line segment connecting the center of gravity of the eccentric ring 13 and the virtual rotation axis 32 form an obtuse angle. The eccentric ring 13 is connected to the base 14 by the virtual rotating body 33, and the eccentric ring 13 rotates about the virtual rotating shaft 32 that is not separated from the base 14, so that the inertial force of the eccentric ring 13 due to acceleration / deceleration Generates a large moment in the reverse rotation of the rotation axis 32 with respect to the acceleration / deceleration of rotation.

  Since the moment due to this inertial force depends on the shape of the elongated holes 34a and 34b, the virtual radius of rotation 42 can be arranged far and the moment radius can be set freely. Thereby, due to the rotational inertia of the eccentric ring 13 It can act to completely cancel the moment. Therefore, the acceleration / deceleration of the input shaft 12 a (rotating body) of the speed reducer 12 does not affect the operation of the eccentric ring 13 at all.

  As described above, according to the second embodiment, the inertial force of the eccentric ring 13 caused by the acceleration / deceleration of the input shaft 12a (rotating body) of the speed reducer 12 does not generate a moment with respect to the rotating shaft 32, and the speed is reduced. The acceleration / deceleration of the input shaft 12a (rotary body) of the machine 12 does not affect the operation of the eccentric ring 13 at all. Therefore, for example, even if the operation state of the motor is changed from star operation to delta operation and instantaneous acceleration / deceleration is applied, there is no problem that the detection switch 18 is erroneously turned on.

Third Embodiment FIG. 6 is a structural diagram of a governor device of a passenger transport system showing a third embodiment of the present invention.

  In the governor device 41 of the present embodiment, only the configuration of the rotating mechanism having the virtual rotating body 43 and the virtual rotating shaft 42 is different, and the other configurations are substantially the same as those of the first embodiment. In FIG. 6, the same parts as those of the embodiment shown in FIG. Further, the same reference numerals are used for the description, and the same reference numerals are used for the description.

In FIG. 6, the governor device 41 of the passenger transport system has one end attached to the eccentric ring 13 and the other end attached to the base 14, and the longitudinal axis is arranged along a straight line toward the center of the virtual rotating shaft 42. Two link mechanisms 46a and 46b are further provided.
In this way, the eccentric ring 13 and the base 14 are connected via the link mechanisms 46 a and 46 b, whereby the eccentric ring 13 is rotated around the virtual rotation shaft 42.

  The center of gravity of the eccentric ring 13 is arranged such that the line segment connecting the rotation center 11a and the center of gravity of the eccentric ring 13 and the line segment connecting the center of gravity of the eccentric ring 13 and the virtual rotation axis 42 form an obtuse angle. The eccentric ring 13 is connected to the base 14 by a virtual rotator 43. Note that the virtual rotation shaft 42 is a solid rotation shaft provided away from the base 14.

The virtual rotator 43 described above includes link mechanisms 46 a and 46 b, and the link mechanisms 46 a and 46 b are provided so as to follow a straight line toward the center of the virtual rotation shaft 42.
The link mechanism 46a is rotatably attached to the eccentric ring 13 and the connecting portion 44a, and is rotatably attached to the base 14 and the connecting portion 45a. On the other hand, the link mechanism 46b is rotatably attached to the eccentric ring 13 and the connecting portion 44b, and is rotatably attached to the base 14 and the connecting portion 45b.

  Next, operation | movement of the governor apparatus of the passenger conveyance system in 3rd embodiment is demonstrated.

  In the virtual rotating body 43, when the swing angle of the link mechanisms 46a and 46b is very small, the connecting portions 44a and 44b on the eccentric ring 13 side are perpendicular to the connecting portions 45a and 45b on the base 14 side. Since it moves and moves in a direction perpendicular to the virtual rotation axis 42 on the extension line, the eccentric ring 13 rotates around the virtual rotation axis 42 that is not separated from the base 14.

  When the eccentric ring 13 starts to move, the swing angle of the link mechanisms 46a and 46b increases, so that the position of the virtual rotating shaft 42 also gradually changes. However, in general, the governor device only has to set the rotation speed for starting movement. Because it is important, it does not affect the function of the governor device to operate at a specific speed.

  The eccentric ring 13 is arranged such that the center of gravity of the eccentric ring 13 forms an obtuse angle between the line segment connecting the rotation center 11a and the eccentric ring 13 and the line segment connecting the center of gravity of the eccentric ring 13 and the virtual rotation axis 42. Since the ring 13 is connected to the base 14 by the virtual rotating body 43 and the eccentric ring 13 rotates around the virtual rotating shaft 42 that is not separated from the base 14, the inertial force of the eccentric ring 13 due to acceleration / deceleration is rotated. A large moment is generated in the rotation opposite to the rotation acceleration / deceleration with respect to the shaft 42.

  Since the moment due to the inertial force depends on the direction of the link mechanisms 46a and 46b, it is possible to freely set the moment radius by disposing the virtual rotation shaft 42 at a distance, and thereby, due to the rotational inertia of the eccentric ring 13. It can act to completely cancel the moment. Therefore, the acceleration / deceleration of the input shaft 12a (rotary body) of the speed reducer 12 does not affect the operation of the eccentric ring 13 at all.

  Thus, according to the third embodiment, the inertial force of the eccentric ring 13 due to the acceleration / deceleration of the input shaft 12a (rotating body) of the speed reducer 12 does not generate a moment with respect to the rotating shaft 32, and the speed is reduced. The acceleration / deceleration of the input shaft 12a (rotary body) of the machine 12 does not affect the operation of the eccentric ring 13 at all. Therefore, for example, even if the motor operation state is changed from star operation to delta operation and instantaneous acceleration / deceleration is applied, there is no problem that the detection switch 18 is erroneously turned on.

  In addition, in 1st embodiment thru | or 3rd embodiment mentioned above, the passenger conveyance system contains the elevator etc. like an elevator other than a passenger conveyor.

Effect of the Invention According to the present invention, the eccentric ring is operated by centrifugal force, and the detection switch is directly operated by the eccentric ring. Although the eccentric ring is an inexpensive and simple configuration, the cam shape provided around the eccentric ring can be made long and gentle, and an excessive impact force does not act on the detection switch, so the reliability is high. And since the precision of the rotation speed which act | operates is good and can implement | achieve reliable and stable operation | movement, the governor apparatus of the passenger conveyance system which does not impair safety can be provided.

It is a front view of the governor apparatus of the passenger conveyance system which shows 1st Embodiment of this invention. It is a left view of the governor apparatus of the passenger conveyance system which shows 1st Embodiment of this invention. It is a right view of the governor apparatus of the passenger conveyance system which shows 1st Embodiment of this invention. It is a side view of the whole governor apparatus of the passenger conveyance system which shows 1st Embodiment of this invention. It is a front view of the governor apparatus of the passenger conveyance system which shows 2nd Embodiment of this invention. It is a front view of the governor apparatus of the passenger conveyance system which shows 3rd embodiment of this invention. It is a block diagram of the governor apparatus of the conventional passenger conveyance system. It is a front view of the whole governor apparatus of the conventional passenger conveyance system. It is a side view of the whole governor apparatus of the conventional passenger conveyance system.

Explanation of symbols

11 Governor device 12 Reducer 12a Input shaft (rotating body)
12b Pulley 13 Eccentric ring 13a Cam shape 13b Adjusting bracket 13c Receiving shape 13d Hole 14 Base 14a Rotating shaft (Rotating mechanism)
14b Punching hole 15 Restoration mechanism 16 Restoration stopper 17 Actuation stopper 16a Resin material 18 Detection switch 19 Structure 20 Control device 21 Brake 22 Electric motor 22a Output shaft 22b Flywheel 22c Pulley 23 Belt 31 Governor device 32 Virtual rotation shaft 33 Virtual rotation body 34a , 34b Slot 35a, 35b Slide pin 41 Governor device 42 Virtual rotating shaft 43 Virtual rotating body 44a, 44b, 45a, 45b Connection part 46a, 46b Link mechanism

Claims (15)

In the governor device of the passenger transport system,
A rotating body,
A base attached to the rotating body;
A cam shape that is rotatably attached to the base via a rotation mechanism, has a flat donut shape, has a center of gravity at a position eccentric to the rotation center of the rotating body at the restoring position, and acts as a cam during operation An eccentric ring having
A restoring mechanism that couples the base and the eccentric ring and gives the eccentric ring a restoring force toward a restoring position;
A restoring stopper that regulates the eccentric ring biased in the restoring direction by the restoring mechanism to a restoring position with respect to the base;
A detection switch provided in the vicinity of the eccentric ring and contacting the cam shape of the eccentric ring when the eccentric ring is activated;
A governor device for a passenger transport system, comprising: a control device that stops the passenger transport system in response to a signal from the detection switch.   The governor device for a passenger transport system according to claim 1, wherein the rotating mechanism includes a rotating shaft provided on the base.   The governor device for a passenger transport system according to claim 1, wherein the base is flat, has a through hole in the center, and the base also has a donut-shaped hollow structure.   A punch hole is provided in the base or a balance weight is provided, and the center of gravity of the entire governor device is located at the center of rotation when the eccentric ring is returned by the force of the restoring mechanism. A governor device for a passenger transport system according to Item 1.   4. The passenger transport system according to claim 1, wherein a hole is provided in the base or the eccentric ring, and the restoring mechanism is accommodated in the base or the eccentric ring. 5. Governor equipment.   The governor device for a passenger transport system according to claim 1, wherein an adjustment fitting for adjusting an initial elongation of the restoration mechanism is attached to an attachment portion of the restoration mechanism to the base or the eccentric ring. The said restoration mechanism consists of springs, and the said adjustment metal fitting is a shape which functions as a spring receptacle so that the shape of the spring may be deformed by a centrifugal force and may not jump out. Governor equipment for passenger transport systems.   The governor device for a passenger transport system according to claim 1, wherein a cam shape of the eccentric ring is formed on an outer peripheral side of the eccentric ring.   The governor device for a passenger transport system according to claim 1, wherein a cam shape of the eccentric ring is formed on an inner peripheral side of the eccentric ring.   The axis of rotation of the rotating body is inclined laterally, and either the eccentric ring or the restoration stopper is made of a quiet material such as a resin material, or either the eccentric ring or the restoration stopper The governor device for a passenger transport system according to claim 1, wherein an elastic member is provided on the surface of the passenger transport system.   The line segment connecting the center of the rotating body and the center of gravity of the eccentric ring and the line segment connecting the center of gravity of the eccentric ring and the center of the rotation mechanism of the eccentric ring form an obtuse angle. The governor apparatus of the passenger conveyance system of 1.   The center of gravity of the eccentric ring is provided in the vicinity of a straight line connecting the center of the rotating body and the center of the rotating mechanism of the eccentric ring, and is provided in the vicinity of the center of the rotating body. The governor device of the described passenger transport system.   The governor device for a passenger transport system according to claim 11, wherein the rotating mechanism of the eccentric ring has a virtual rotating shaft provided outwardly from the base. The eccentric ring has two elongated holes provided along an arc centered on the virtual rotation axis,
The base has a sliding pin that slides corresponding to each slot,
The passenger according to claim 13, wherein the sliding pin of the base slides in the elongated hole of the eccentric ring, so that the eccentric ring rotates about the virtual rotation axis with respect to the base. The governor device of the transport system. And further comprising two link mechanisms having one end attached to the eccentric ring and the other end attached to the base, the longitudinal axis being arranged along a straight line toward the center of the virtual rotation axis,
The passenger according to claim 13, wherein the eccentric ring and the base are connected via the link mechanism, whereby the eccentric ring rotates about the virtual rotation axis with respect to the base. The governor device of the transport system.

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