JP2012188266A - Handrail driving device of passenger conveyor - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a handrail driving device of a passenger conveyor that can be installed in an existing truss easily even when the passenger conveyor is renewed.SOLUTION: The handrail driving device of a passenger conveyor 50 disposed in the truss 6 of the passenger conveyor that gives a driving force to a handrail belt 22 that moves along a railing panel 20 includes a base 52 fitted to an upper beam 6a that constitutes the truss 6, a handrail drive motor 54, and a handrail drive unit 70 that transmits the power from the handrail drive motor 54 to the handrail belt 22. The railing panel 20, the handrail drive motor 54, and the handrail drive unit 70 are fitted to the base 52.

Description

  The present embodiment relates to a handrail drive device for a passenger conveyor.

  Passenger conveyors such as escalators and moving walkways are a truss as a chassis that supports passengers and their own weight, and a number of steps that carry passengers by circulating between one entrance and the other entrance in this truss, The balustrade panel erected on both ends of the plurality of steps, a handrail belt that moves along the outer periphery of the balustrade panel, and a handrail drive device that drives the handrail belt, and circulates and moves a number of steps The handrail belt is synchronized with the step and circulated around the balustrade panel.

  As a handrail drive device for such a passenger conveyor, for example, a handrail drive unit that transmits power from a chain feeding operation to a handrail belt, and a drive unit attached to an upper beam constituting a truss and a chain are stretched over. And an idler unit attached to a lower beam constituting the truss, and the drive unit and the idler unit are connected by a connecting means that adjusts the relative position of the two (see FIG. For example, see Patent Document 1 below)

JP 2009-190865 A

  However, in the above-described handrail drive device, when renewing a passenger conveyor that replaces only the components of the passenger conveyor including the handrail drive device while leaving the existing truss, the positions of the drive unit and the idler unit are changed. It is necessary to perform the matching operation and the operation of connecting the handrail driving wheel and the handrail driving portion that are rotated by the driving device of the passenger conveyor installed in the existing truss with a chain, which causes the work to be complicated.

  The present invention has been made in view of the above points, and an object thereof is to provide a handrail drive device that can be easily installed on an existing truss even when a passenger conveyor is renewed.

  A handrail drive device for a passenger conveyor according to the present invention is installed on a truss of a passenger conveyor, and in a handrail drive device of a passenger conveyor that applies a driving force to a handrail belt that moves along a balustrade panel, the upper beam constituting the truss A base that is attached; a motor; and a handrail drive that transmits power from the motor to the handrail belt, wherein the balustrade panel, the motor, and the handrail drive are attached to the base. To do.

It is a mimetic diagram showing the whole passenger conveyor composition provided with the handrail drive concerning one embodiment of the present invention. It is a principal part enlarged view of FIG. It is AA sectional drawing of FIG. It is BB sectional drawing of FIG. It is a block diagram which shows the control structure of the handrail drive device which concerns on one Embodiment of this invention. It is a schematic diagram which shows the whole passenger conveyor structure provided with the handrail drive device which concerns on the example of a change of this invention.

  Hereinafter, an embodiment of the present invention will be described with reference to the drawings.

  The handrail drive device 50 for a passenger conveyor according to the present embodiment is installed to be inclined across the upper and lower floors of a building as illustrated in FIG. 1, and a number of steps 2 are provided on the boarding boards 3 and 4 on the upper and lower floors. It is applied to a passenger conveyor (escalator) 1 that conveys a passenger boarded on a step 2 across an upper floor and a lower floor by circulating and moving between the entrance and exit. A number of steps 2 are connected by an endless step chain 5 and are arranged in a truss 6 installed under the floor of the building.

  In a machine room 10 provided in the truss 6 on the upper floor side, a sprocket 7 connected to a rotating shaft and a drive device 8 including a drive motor and a speed reducer are arranged. On the side, a sprocket 9 connected to the rotating shaft is arranged.

  A step chain 5 is wound between the sprocket 7 on the upper floor side and the sprocket 9 on the lower floor side. As the sprockets 7 and 9 are rotated, the step chain 5 and a large number of the chain are connected thereto. The step 2 circulates between the sprockets 7 and 9.

  A pair of balustrade panels 20 are erected along the moving direction of the step 2 on the upper beams 6 a disposed on the left and right sides of the upper part of the truss 6, and an endless handrail belt 22 is provided on the outer periphery of the balustrade panel 20. Is attached. The handrail belt 22 is synchronized with the step 2 along the outer periphery of the balustrade panel 20 by the handrail driving device 50 and travels in parallel with the step 2.

  As shown in FIGS. 1 and 2, the handrail driving device 50 includes a base 52 attached to an upper beam 6 a constituting the upper part of the truss 6, a handrail driving motor 54 that serves as a power source for running the handrail belt 22, and a handrail. A handrail drive unit 70 that transmits power from the drive motor 54 to the handrail belt 22.

  The base 52 is a plate-like member provided on the upper surface of the upper beam 6a over almost the entire length of the truss 6 along the longitudinal direction of the truss 6 (that is, the moving direction of the handrail belt 22). It is fixed to the beam 6a.

  The base 52 is divided into a plurality (for example, three in this embodiment) in the longitudinal direction of the truss 6, and support beams 56 are erected from the upper surface of each base 52 (see FIG. 1). As shown in FIG. 3, the balustrade panel 20 is attached to the upper end of the support beam 56 via a bracket 58, and the handrail rail 24 that guides the handrail belt 22 that runs above the balustrade panel 20 is provided on the upper surface of the bracket 58. It is attached. A handrail rail 24 that guides the handrail belt 22 that travels below the balustrade panel 20 is attached to the lower portion of the support beam 56 via a bracket 60.

  2 and 4, among the bases 52 divided in the longitudinal direction of the truss 6, the base 52a provided on the upper floor side of the upper beam 6a of the truss 6 has a support beam. A support plate 62 to which the handrail drive motor 54 and the handrail drive unit 70 are attached is erected at a position avoiding 56.

  The handrail drive motor 54 has a sprocket 66 around which a drive chain 68 is wound fixed to a rotating shaft thereof. The handrail drive motor 54 is provided such that the number of rotations can be controlled by an inverter circuit included in the control unit 26 disposed in the machine room 10 (see FIGS. 1 and 5).

  As shown in FIGS. 2 and 4, the handrail driving unit 70 includes a plate-like frame 72 attached to the support plate 62, a frame parallel to the moving direction of the handrail belt 22 and aligned in a straight line. A plurality of (four in this embodiment) drive rollers 74 are provided in 72, and a plurality of pressure rollers 76 are provided for each drive roller 74.

  The drive roller 74 is in contact with the inner surface of the handrail belt 22 and frictionally drives the handrail belt 22, and a shaft 75 connected to the drive roller 74 is rotated about a horizontal axis by a bearing disposed on the frame 72. Supported as possible. A drive chain 68 is wound around the sprocket 78 and is coaxially fixed to the shaft 75 of each drive roller 74, and the power from the handrail drive motor 54 is transmitted via the drive chain 68, thereby driving roller 74. Is driven to rotate.

  A plurality of pressing rollers 76 provided for each driving roller 74 are rotatable on the frame 72 via brackets and in a direction perpendicular to the moving direction of the handrail belt 22 (in the vertical direction in this embodiment). It is supported so as to be movable, and is elastically biased by a spring mechanism 80 in a direction in which it is pressed against a driving roller 74 facing the handrail belt 22.

  Then, both sides of the handrail belt 22 are sandwiched by the driving roller 74 and the pressing roller 76, and the pressing roller 76 is biased toward the handrail belt 22 by the spring mechanism 80 to increase the frictional force between the handrail belt 22 and the driving roller 74. By driving the drive roller 74, the handrail belt 22 is circulated and moved by friction drive.

  Further, the handrail driving unit 70 is provided with a belt speed detecting unit 84 that detects the moving speed of the handrail belt 22 from the rotational speed of at least one of the plurality of pressing rollers 76 (see FIG. 5).

  In the present embodiment, a sprocket 66 provided on the handrail drive motor 54 and a sprocket 78 provided on the handrail drive unit 70 and an idler pulley 82 over which a drive chain 68 is stretched are disposed on the support plate 62. The idler pulley 82 adjusts the tension of the drive chain 68.

  In the handrail drive device 50 having such a configuration, the power generated by the handrail drive motor 54 is transmitted to the drive roller 74 via the drive chain 68, so that the handrail belt 22 is interposed between the drive roller 74 and the pressing roller 76. A driving force in the feeding direction of the driving roller 74 is applied to the control unit 26, and the control unit 26 disposed in the machine room 10 controls the rotation of the handrail driving motor 54 to control the moving speed of the handrail belt 22. To do.

  Specifically, as shown in FIG. 6, the control unit 26 is connected to a belt speed detecting unit 84 that detects the moving speed of the handrail belt 22 and receives the moving speed (belt moving speed) of the handrail belt 22. The step speed detecting unit 86 that detects the moving speed of the step 2 is connected, and the moving speed of the step 2 (step moving speed) is input.

  Then, the control unit 26 compares the belt moving speed detected by the belt speed detecting unit 84 with the step moving speed detected by the step speed detecting unit 86 so that the belt moving speed becomes equal to the step moving speed. The rotation speed of the handrail drive motor 54 is adjusted. As a result, the handrail belt 22 travels in synchronization with the steps 2 along the outer periphery of the balustrade panel 20 by the handrail driving device 50.

  Next, the installation method of the handrail drive device 50 of the present embodiment configured as described above will be described. In addition, although the case where the handrail drive device 50 is replaced | exchanged here as an example at the time of the renewal of the passenger conveyor 1 is given as an example, the installation method of the handrail drive device 50 is demonstrated, Even when a passenger conveyor is newly installed, it may be installed by the same method as described below.

  The handrail driving device 50 includes a support beam 56 to which brackets 58 and 60 for providing the balustrade panel 20 and the handrail rail 24 are attached to each base 52 previously divided in the longitudinal direction of the truss 6 at a factory, and a handrail driving unit 70. The support plate 62 to which the handrail drive motor 54 is attached is attached while adjusting the position, and is transported from the factory to the site in a state of being divided in the longitudinal direction of the truss 6.

  At the site, after the truss 6 is removed from the existing supplies that have been installed on the truss 6, only unnecessary articles that interfere with the operation of the handrail drive device 50 are removed and then the support beam 56 and the support plate 62 are installed in the factory. Is fixed to the upper surface of the upper beam 6a of the truss 6 by bolting, welding, or the like, thereby completing the installation work.

  In the handrail drive device 50 of the present embodiment, the necessary items for moving the handrail belt 22, that is, the balustrade panel 20 on which the handrail belt 22 travels on the outer periphery, the handrail drive unit 70 that moves the handrail belt 22, A handrail drive motor 54 serving as a power source for the handrail drive unit 70 is attached to a base 52 fixed to the upper beam 6 a of the truss 6.

  For this reason, the relative position of each product necessary for moving the handrail belt 22 in the factory can be set in a desired position and then attached to the base 52, and the centering step of aligning the position of each product on site The construction period can be shortened.

  In the handrail drive device 50 of the present embodiment, a handrail drive motor 54 that is separate from the drive device 8 for circulating and moving the steps 2 of the passenger conveyor 1 as a drive source of the handrail drive unit 70 that moves the handrail belt 22. Therefore, it is not necessary to perform a connecting operation with the driving device 8 provided in the existing truss 6, and the number of work steps at the site can be reduced.

  Moreover, since the handrail drive device 50 of this embodiment attaches the base 52 to the upper beam 6a of the truss 6 and arranges it on the existing truss 6, since the articles provided inside the existing truss 6 are less likely to get in the way, Unnecessary article removal work can be reduced, and the number of on-site work steps can be reduced.

  Further, in the handrail drive device 50 of the present embodiment, since the base 52 is divided in the moving direction of the handrail belt 22, individual external dimensions can be reduced and the weight can be reduced. The space can be reduced, and a large-scale heavy machine is not required at the time of carrying in, so that necessary time and cost can be greatly reduced.

  Further, in the handrail drive device 50 of the present embodiment, the control unit 26 rotates the handrail drive motor 54 so that the belt moving speed of the handrail belt 22 detected by the belt speed detecting unit 84 becomes equal to the step moving speed of the step 2. In order to control the number, the movement of the handrail belt 22 can be synchronized with the step 2.

  In the above-described embodiment, the case where the base 52 is divided in the moving direction of the handrail belt 22 has been described. However, the present invention is not limited to this, and for example, as illustrated in FIG. The handrail drive device 50 may be configured by providing a continuous base 52 over substantially the entire length of the truss 6 without being divided in the direction, and attaching a support beam 56 and a support plate 62 to the base 52.

  As mentioned above, the above-described embodiment has been exemplified and specifically described as a specific example of a handrail drive device for a passenger conveyor to which the present invention is applied. However, the technical scope of the present invention is the technical matter disclosed in the description of the embodiment. The present invention is not limited, and includes modifications and application examples that are naturally derived in view of general technical common sense based on the above disclosure.

DESCRIPTION OF SYMBOLS 1 ... Passenger conveyor 2 ... Step 3, 4 ... Boarding board 5 ... Step chain 6 ... Truss 6a ... Upper beam 7 ... Sprocket 8 ... Drive device 9 ... Sprocket 10 ... Machine room 20 ... Railing panel 22 ... Handrail belt 24 ... Handrail rail 26 ... Control unit 50 ... Handrail drive device 52 ... Base 54 ... Handrail drive motor 56 ... Support beam 58 ... Bracket 60 ... Bracket 62 ... Support plate 66 ... Sprocket 68 ... Drive chain 70 ... Handrail drive unit 72 ... Frame 74 ... Drive roller 75 ... Shaft 76 ... Pressing roller 78 ... Sprocket 80 ... Spring mechanism 82 ... Idle pulley 84 ... Belt speed detector 86 ... Step speed detector

Claims (4)

In the handrail drive device of the passenger conveyor that is installed on the truss of the passenger conveyor and gives a driving force to the handrail belt that moves along the balustrade panel,
A base attached to the upper beam constituting the truss, a motor, and a handrail drive unit that transmits power from the motor to the handrail belt,
A handrail drive device for a passenger conveyor, wherein the balustrade panel, the motor, and the handrail drive unit are attached to the base.   The handrail drive device for a passenger conveyor according to claim 1, wherein the base is divided in a moving direction of the handrail belt.   The handrail drive device for a passenger conveyor according to claim 1 or 2, wherein a support beam that supports a belt rail that guides the handrail belt is attached to the base.   A speed detection unit that detects the moving speed of the handrail belt, and a control unit that controls the rotation speed of the motor so that the moving speed detected by the speed detecting unit is equal to the moving speed of the steps provided on the passenger conveyor. The handrail drive device for a passenger conveyor according to any one of claims 1 to 3.

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