JP2005082257A - Moving handrail device for passenger conveyor - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To obtain a moving handrail device for a passenger conveyor where tension acting on a transmission strip body of a transmission mechanism driving a moving handrail is limited when an excessive moving resistance occurs on the moving handrail. <P>SOLUTION: The moving handrail device drives by pressing a moving handrail 3 with a stationary roller 4 and a displacement roller 6. When the excessive moving resistance acts on the moving handrail 3, the tension of the transmission strip body 12 increases and causes the possibility that the tension may exceed the allowable tension of the transmission strip body 12. A torque transmission limit mechanism 13 is provided between the displacement roller 6 and a wrapping connector wheel 8 to limit the torque transmitted between the above both. When the excessive moving resistance occurs on the moving handrail 3, the device limits the tension increase of the transmission strip body 12 by the function of the torque transmission limit mechanism 13 to prevent the transmission strip body 12 from being acted by the excessive tension and prevent occurrence of troubles such as fractures of the transmission strip body 12. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a moving handrail device for a passenger conveyor that is provided on a railing such as an escalator or a moving sidewalk and moves along the length of the railing.

  In a conventional handrail device for a passenger conveyor, a handrail that is endless and circulates around the outer periphery of the balustrade of the passenger conveyor is disposed along the length of the main frame of the passenger conveyor. In addition, the stationary roller is pivotally attached to the fixing portion of the main frame via an axis orthogonal to the length of the main frame, and is disposed away from each other along the length of the main frame and is in contact with one side in the cross section of the moving handrail. Equipped. The movable attachment body is mounted on the main frame and is movably disposed in a direction intersecting the longitudinal direction of the moving handrail. Further, the displacement roller is pivotally attached to the movable mounting body through an axis orthogonal to the longitudinal length of the main frame and is provided in contact with the other side of the cross section of the moving handrail, and is opposed to the stationary roller via the moving handrail. Be placed.

  A wrapping transmission wheel that is engaged with the rotation shaft of the displacement roller and rotates together with the displacement roller is provided on the movable attachment body, and a wrapping drive vehicle is pivotally attached to the movable attachment body and provided on the main frame. It is driven by the drive source of the conveyor. Further, the idle transmission wheel is pivotally attached to the fixed portion of the main frame via an axis orthogonal to the length of the main frame and is arranged between the displacement rollers, and forms a gap on the other side of the cross section of the moving handrail. Equipped oppositely. Further, the endless transmission strip is wound around the winding drive vehicle, the one-side winding transmission vehicle, the idle transmission vehicle, and the other-side winding transmission vehicle sequentially.

  A conventional handrail device for a passenger conveyor is configured as described above, and the handrail is pinched by a stationary roller and a displacement roller in a cross section. And if the drive source of a passenger conveyor operate | moves, a winding drive vehicle will rotate and a transmission strip will operate | move. As a result, the one-side winding transmission vehicle, the idle transmission vehicle, and the other-side winding transmission vehicle rotate, and the displacement roller rotates via the winding transmission vehicle, and is pinched by the stationary roller and the displacement roller. The moving handrail is driven to circulate.

  That is, the displacement roller is pressed against the moving handrail by the tension of the transmission strip driven by the winding drive vehicle, and the weight of the movable mounting body and the winding transmission wheel mounted on the movable mounting body, and the moving handrail becomes a stationary roller. As a result, the moving handrail is driven by the friction between the moving handrail and the displacement roller.

  In such a transmission mechanism, when the moving resistance of the moving handrail increases, the tension of the transmission strip increases, and the holding pressure of the moving handrail by the stationary roller and the displacement roller increases, thereby obtaining the required driving ability of the moving handrail. it can. In addition, since the tension of the transmission strip is reduced while the passenger conveyor is stopped, the pinching force of the moving handrail by the stationary roller and the displacement roller is reduced, and the impression generated on the moving handrail by the stationary roller when the passenger conveyor is stopped for a long time. Can be reduced. (For example, refer to Patent Document 1).

Japanese Examined Patent Publication No. 63-13910 (2nd page, Fig. 2)

  In the conventional moving handrail device for passenger conveyors, when the moving resistance of the moving handrail increases abnormally, the tension of the transmission strip increases as the moving resistance of the moving handrail increases. For this reason, since there is a possibility that tension exceeding the allowable tension of the transmission strip may act on the transmission strip, it is necessary to prevent this beforehand.

  The present invention has been made to solve such a problem, and is a passenger conveyor in which the tension acting on the transmission strip of the transmission mechanism that drives the moving handrail is limited when an excessive movement resistance is generated in the moving handrail. An object of the present invention is to obtain a moving handrail device.

  In the moving handrail device of the passenger conveyor according to the present invention, the moving handrail is arranged endlessly and circulated along the length of the main frame, and the axis perpendicular to the length of the main frame is fixed to the fixing portion of the main frame. A stationary roller that is pivotally attached and arranged away from each other along the length of the main frame and is in contact with one side of the cross section of the moving handrail, and a direction that is mounted on the main frame and intersects the length of the moving handrail A movable mounting body that is movably disposed on the movable mounting body, and is mounted on the movable mounting body in contact with the other side of the transverse cross section of the moving handrail by an axis perpendicular to the length of the main frame. A displacement roller disposed opposite to the stationary roller, a winding transmission provided on the movable mounting body and engaged with the rotation shaft of the displacement roller and rotating together with the displacement roller, and pivotally attached to the movable mounting body. Driven by the drive source provided on the main frame. Is mounted on the fixed drive part of the main frame via an axis perpendicular to the length of the main frame and is arranged between the displacement rollers, and forms a gap on the other side of the cross section of the moving handrail And the idler gear, the endlessly wound drive vehicle, the one-side wound transmission vehicle, the idler transmission vehicle, and the transmission strip wound around the other-side wound transmission vehicle in sequence. And a torque transmission limiting mechanism that is engaged with both the displacement roller and the winding transmission wheel and limits the torque transmitted between the two.

  The moving handrail device for a passenger conveyor according to the present invention includes a movable handrail in which a displacement roller is moved by a tension of a transmission strip driven by a winding drive vehicle and a dead weight of a movable mounting body and a wound transmission vehicle mounted on the movable mounting body. In addition, the moving handrail is driven by the friction between the moving handrail and the displacement roller because the moving handrail is supported by the stationary roller. Further, the movement resistance of the moving handrail increases, so that the tension of the transmission strip increases, and the holding pressure of the moving handrail by the stationary roller and the displacement roller increases, and the required driving ability of the moving handrail can be obtained.

  In addition, since the tension of the transmission strip is reduced while the passenger conveyor is stopped, the pinching force of the moving handrail by the stationary roller and the displacement roller is reduced, and the impression generated on the moving handrail by the stationary roller when the passenger conveyor is stopped for a long time. Can be reduced. In addition, when the movement resistance of the moving handrail increases abnormally, the tension of the transmission strip increases as the movement resistance of the moving handrail increases, and the tension exceeding the allowable tension of the transmission strip may act on the transmission strip. There is. However, the torque transmission limiting mechanism is engaged with both the displacement roller and the winding transmission wheel, and the torque transmitted between the two is limited.

  For this reason, when an abnormally large movement resistance is generated in the moving handrail, the increase in the tension of the transmission strip is limited to a predetermined range by the function of the torque transmission limiting mechanism. Therefore, when excessive movement resistance is generated in the moving handrail, it is possible to prevent the tension exceeding the allowable tension of the transmission strip from acting on the transmission strip. Thereby, there exists an effect which prevents beforehand generation | occurrence | production of malfunctions, such as a fracture | rupture of a transmission strip, a deformation | transformation of related members, such as a winding transmission vehicle, and a damage of a moving handrail.

Embodiment 1 FIG.
1 and 2 are views showing an embodiment of the present invention. FIG. 1 is a front view conceptually showing a driving mechanism of a moving handrail, and FIG. 2 is a perspective view of FIG. In the figure, a fixing plate 2 is formed by providing a mounting plate on a main frame 1 of a passenger conveyor. An endless moving handrail 3 is arranged along the length of the main frame 1 and circulates. The stationary roller 4 is pivotally attached to the fixed portion 2 via an axis orthogonal to the length of the main frame 1 and is arranged away from each other along the length of the main frame 1. Arranged in contact.

  In addition, a movable attachment body 5 made of a plate is provided on the main frame 1 and is movably equipped in a direction intersecting the longitudinal direction of the moving handrail 3. A displacement roller 6 is mounted on the movable mounting body 5 via a rotating shaft 7 orthogonal to the length of the main frame 1 and is in contact with the other side of the cross section of the moving handrail 3. Via the stationary roller 4. Further, a winding transmission wheel 8 formed of a chain gear is provided on the movable attachment body 5 and is engaged with the rotation shaft 7 of the displacement roller 6 to rotate together with the displacement roller 6.

  A winding drive wheel 9 composed of a chain gear is pivotally attached to the movable attachment 5 and is driven via a drive chain 10 by a drive source (not shown) provided on the main frame 1. An idle transmission wheel 11 made of a chain gear is pivotally attached to the fixed portion 2 of the main frame 1 via an axis perpendicular to the length of the main frame 1 and arranged between the displacement rollers 6. It is equipped with a gap on the other side of the surface so as to face each other.

  Then, an endless transmission strip 12 made of a roller chain is sequentially wound around the winding drive wheel 9, the one side transmission gear 8, the idle transmission wheel 11 and the other side transmission gear 8. Further, the torque transmission limiting mechanism 13 is engaged with both the displacement roller 6 and the winding transmission vehicle 8, and the torque transmitted between the two is limited.

  In the moving handrail device of the passenger conveyor configured as described above, when the moving handrail 3 is pinched by the stationary roller 4 and the displacement roller 6 in the cross section and the driving source of the passenger conveyor is operated, the winding drive wheel 9 is rotated. The transmission strip 12 operates. As a result, the winding roller 8 on one side, the idle gear 11, the winding gear 8 on the other side rotate, and the displacement roller 6 rotates via the winding gear 8, whereby the stationary roller 4 and The moving handrail 3 pinched by the displacement roller 6 is driven to circulate.

  That is, the displacement roller 6 is pressed against the movable handrail 3 by the tension of the transmission strip 12 driven by the winding drive vehicle 9 and the weight of the movable mounting body 5 and the winding transmission vehicle 8 mounted on the movable mounting body 5. In addition, since the movable handrail 3 is supported by the stationary roller, the movable handrail 3 is driven by the friction between the movable handrail 3 and the displacement roller 6.

  In such a transmission mechanism, when the movement resistance of the movable handrail 3 is increased, the tension of the transmission strip 12 is increased, and the clamping pressure of the movable handrail 3 by the stationary roller 4 and the displacement roller 6 is increased. Driving ability can be obtained. Further, since the tension of the transmission strip 12 is reduced while the passenger conveyor is stopped, the clamping pressure of the moving handrail 3 by the stationary roller 4 and the displacement roller 6 is reduced, and when the passenger conveyor is stopped for a long time, the stationary roller 4 or the like. Indentations generated on the moving handrail 3 can be reduced.

  Further, when the movement resistance of the moving handrail 3 increases abnormally, the tension of the transmission strip 12 increases as the movement resistance of the moving handrail 3 increases, and the tension exceeding the allowable tension of the transmission strip 12 is increased. 12 may be affected. However, the torque transmission limiting mechanism 13 is engaged with both the displacement roller 6 and the winding transmission vehicle 8, and the torque transmitted between the two is limited. For this reason, when an excessive movement resistance is generated in the moving handrail 3, the increase in the tension of the transmission strip 12 is limited to a predetermined range by the function of the torque transmission limiting mechanism 13.

  Therefore, when an abnormally large movement resistance is generated in the moving handrail 3, it is possible to prevent the tension exceeding the allowable tension of the transmission strip 12 from acting on the transmission strip 12 in advance. Thereby, generation | occurrence | production of malfunctions, such as a fracture | rupture of the transmission strip 12, the deformation | transformation of related members, such as the winding transmission vehicle 8, and the damage of the moving handrail 3, can be prevented beforehand.

BRIEF DESCRIPTION OF THE DRAWINGS It is a figure which shows Embodiment 1 of this invention, and is a front view which shows notionally the drive mechanism of a moving handrail. The perspective view of FIG.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1 Main frame, 2 fixed part, 3 moving handrail, 4 stationary roller, 5 movable attachment body, 6 displacement roller, 7 rotating shaft, 8 winding transmission vehicle, 9 winding driving vehicle, 11 idle transmission vehicle, 12 transmission strip , 13 Torque transmission limiting mechanism.

Claims (1)

  An endless shape is arranged along the longitudinal length of the main frame, and the moving handrail is circulated and pivotally attached to the fixing portion of the main frame via an axis perpendicular to the longitudinal length of the main frame to be the longitudinal length of the main frame. And a stationary roller that is disposed away from each other along the side of the cross section of the moving handrail, and is disposed on the main frame so as to be movable in a direction that intersects with the length of the moving handrail. A movable attachment body, and is mounted on the movable attachment body through an axis perpendicular to the length of the main frame and in contact with the other side of the cross section of the movable handrail, and the stationary position is provided via the movable handrail. A displacement roller disposed opposite to the roller; a winding transmission provided on the movable attachment body and engaged with a rotation shaft of the displacement roller to rotate together with the displacement roller; and pivotally attached to the movable attachment body By the drive source provided in the main frame. In a transverse section of the moving handrail, and is mounted between the displacement rollers and pivotally attached to the fixed portion of the main frame via an axis perpendicular to the length of the main frame. A play transmission vehicle that is equipped oppositely with a gap formed on the other side, and endlessly, the above-described winding drive vehicle, one side winding transmission vehicle, the idle transmission vehicle, and the other side winding transmission vehicle in order A moving handrail device for a passenger conveyor, comprising: a wound transmission strip, and a torque transmission limiting mechanism that is engaged with both the displacement roller and the wound transmission wheel to limit torque transmitted between the two.

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