JP2012121668A - Moving handrail driving apparatus for passenger conveyor - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a moving handrail driving apparatus for a passenger conveyor that can reduce the number of components while circularly moving a handrail along with steps.SOLUTION: The moving handrail driving apparatus includes: a drive shaft 16 that is provided in a step sprocket 14 for circularly moving a step chain 13 and rotates with the step sprocket 14 by drive of a driving machine 2; a moving handrail driving sheave 17 that is provided in the driving shaft 16 and rotates with the driving shaft 16; and a moving handrail 5 that is stretched on the moving handrail driving sheave 17 and circularly moves by the rotation of the moving handrail driving sheave 17.

Description

  The present invention relates to a moving handrail drive device for a passenger conveyor that circulates and moves a moving handrail in conjunction with a step chain.

  Conventionally, a driving machine, a step sprocket for circulating and moving the step chain, a first transmission chain for transmitting the rotational force of the driving machine to the step sprocket, a driving sprocket formed integrally with the step sprocket, and a moving handrail are wound. Moving handrail of an escalator comprising a hung moving handrail drive sheave, a second transmission chain that transmits the rotational force of the driving sprocket to the moving handrail drive sheave, and a slack suppression sprocket that suppresses slackness of the second transmission chain Drive devices are known. When the drive machine is driven, the moving handrail drive sheave rotates in conjunction with the step sprocket. As a result, the moving handrail circulates in conjunction with the steps (see, for example, Patent Document 1).

Japanese Patent Publication No.49-19744

  However, in order to transmit the rotational force of the driving machine to the moving handrail drive sheave, a driving sprocket must be formed integrally with the step sprocket, and a transmission chain must be provided across the driving sprocket and the moving handrail driving sheave. In addition, in order to suppress the slack of the transmission chain, a slack suppressing sprocket has to be provided, resulting in a problem that the number of parts increases.

  The present invention provides a moving handrail drive device for a passenger conveyor that can circulate and move a moving handrail in conjunction with a step and reduce the number of parts.

  A moving handrail drive device for a passenger conveyor according to the present invention is provided in a step sprocket that circulates and moves a step chain, and is provided with a drive shaft that rotates together with the step sprocket by driving of the drive unit, the drive shaft, and the drive shaft. A moving handrail driving sheave that rotates together with the moving handrail driving sheave, and a moving handrail that wraps around the moving handrail driving sheave and circulates by rotation of the moving handrail driving sheave.

  According to the moving handrail driving device for a passenger conveyor according to the present invention, the step sprocket and the moving handrail driving sheave are provided on the driving shaft, and the step sprocket and the moving handrail driving sheave are interlocked with the driving shaft that is rotated by driving of the driving machine. Therefore, there is no need to form a drive sprocket integrally with the step sprocket, and to provide a transmission chain across the drive sprocket and the moving handrail drive sheave, and further, a slack suppressing sprocket for suppressing the slack of the transmission chain. Need not be provided. As a result, the moving handrail can be circulated and moved in conjunction with the steps, and the number of parts of the moving handrail driving device of the passenger conveyor can be reduced.

It is a side view which shows the upper floor side part of the escalator which concerns on Embodiment 1 of this invention. It is arrow sectional drawing along the II-II line | wire of FIG. It is a side view which shows the upper floor side part of the escalator which concerns on Embodiment 2 of this invention. It is arrow sectional drawing along the IV-IV line of FIG. It is sectional drawing which shows the upper floor side part of the escalator which concerns on Embodiment 3 of this invention. It is arrow sectional drawing along the VI-VI line of FIG.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. In the drawings, the same or corresponding members and parts will be described with the same reference numerals.

Embodiment 1 FIG.
1 is a side view showing an upper floor portion of an escalator according to Embodiment 1 of the present invention, and FIG. 2 is a cross-sectional view taken along the line II-II in FIG. In the figure, an escalator (passenger conveyor) moves a main frame 1, a driving machine 2 provided on an upper floor portion of the main frame 1, a plurality of steps 3 provided on the main frame 1, and the steps 3. Step driving device 4, endless moving handrail 5 provided at both ends in the width direction of main frame 1, moving handrail driving device (moving handrail driving device for passenger conveyor) 6 for circulating and moving moving handrail 5, and driving And a rotational force transmission device 7 for transmitting rotational force generated by driving the machine 2 to the moving handrail drive device 6.

  The step 3 includes a step body 8, a driving roller 9 disposed on a front side portion of the step body 8 when the step 3 is located on the outward path side, and a rear stage of the step body 8 when the step 3 is located on the outward path side. And a follower roller 10 disposed on the side portion. The driving roller 9 and the follower roller 10 are rotatably supported by the step body 8.

  The step drive device 4 includes a drive rail 11 that guides the drive roller 9, a follow rail 12 that guides the follow roller 10, an endless step chain 13 that connects each step 3, and a fitting hole 14a. And a step sprocket 14 around which a step chain 13 is wound. Each of the drive rail 11, the follower rail 12, the step chain 13, and the step sprocket 14 is provided in pairs. As the step sprocket 14 rotates, the step chain 13 circulates and moves. As the step chain 13 circulates, the step 3 circulates while being guided by the drive rail 11 and the follower rail 12.

  The movable handrail drive device 6 includes a pair of bearings 15 provided in the main frame 1, a drive shaft 16 provided rotatably in the main frame 1 via the bearings 15, and a fitting hole 17a. The movable handrail drive sheave 17 fixed to the drive shaft 16 by fitting the drive shaft 16 to 17a, the pressing device 18 that presses the movable handrail 5 toward the movable handrail drive sheave 17, and the movable handrail 5 are guided. And a plurality of guide rollers 19. Each of the moving handrail drive sheave 17 and the pressing device 18 is provided in pairs. A moving handrail 5 is wound around the moving handrail drive sheave 17. The moving handrail drive sheave 17 is arranged so that the axis of the moving handrail drive sheave 17 overlaps the extension of the axis of the drive shaft 16.

  The step sprocket 14 is fixed to the drive shaft 16 by fitting the drive shaft 16 into the fitting hole 14 a of the step sprocket 14. Further, the step sprocket 14 is arranged so that the axis of the step sprocket 14 overlaps the extension of the axis of the drive shaft 16. Each of the step sprocket 14 and the moving handrail drive sheave 17 rotates as the drive shaft 16 rotates.

  The rotational force transmission device 7 includes a drive sprocket 20 that is fixed to the drive shaft 16 by forming a fitting hole 20a and the drive shaft 16 is fitted into the fitting hole 20a, and the rotation shaft and the drive sprocket of the drive unit 2. 20 and a transmission chain 21 wound around. The drive sprocket 20 is arranged so that the axis of the drive sprocket 20 overlaps with an extension of the axis of the drive shaft 16. The rotational force generated by driving the drive machine 2 is transmitted to the drive sprocket 20 via the transmission chain 21. As a result, the drive sprocket 20 rotates. As a result, the drive shaft 16 rotates.

  The pressing device 18 includes a plurality of rollers 22 arranged side by side along a portion of the moving handrail 5 that is wound around the moving handrail drive sheave 17, and a support member 23 that supports each roller 22. The roller 22 is arranged such that the moving handrail driving sheave 17 and the roller 22 sandwich the moving handrail 5. The support member 23 presses the roller 22 against the moving handrail 5.

  Next, the operation of the escalator will be described. When the drive machine 2 is driven, the rotational force generated by the drive of the drive machine 2 is transmitted to the drive shaft 16 by the rotational force transmission device 7. Thereby, the drive shaft 16 rotates.

  As the drive shaft 16 rotates, the moving handrail drive sheave 17 rotates. Thereby, the moving handrail 5 circulates and moves. Further, when the drive shaft 16 rotates, the step sprocket 14 rotates. Thereby, the step 3 is circulated and moved. Since each of the moving handrail drive sheave 17 and the step sprocket 14 is rotated by the rotation of the drive shaft 16, the moving handrail 5 circulates in conjunction with the step 3.

  As described above, according to the movable handrail drive device 6 according to the first embodiment of the present invention, the step sprocket 14 and the movable handrail drive sheave 17 are provided on the drive shaft 16 and are rotated by the drive of the drive unit 2. Since the step sprocket 14 and the movable handrail drive sheave 17 rotate in conjunction with the shaft 16, a drive sprocket is formed integrally with the step sprocket 14 compared to the conventional device, and this drive sprocket and the movable handrail drive sheave 17 are combined. There is no need to provide a transmission chain, and it is not necessary to provide a slack suppressing sprocket for suppressing the slack of the transmission chain. As a result, the moving handrail 5 can be circulated in conjunction with the steps 3 and the number of parts of the moving handrail driving device 6 can be reduced.

  In addition, a transmission chain for transmitting the rotational force from the step sprocket 14 to the moving handrail drive sheave 17 is not required between the step sprocket 14 and the moving handrail drive sheave 17 as compared with the conventional device. Compared to the case where a chain is used, it is possible to reduce the periodic maintenance work due to the generation of the transmission chain over time.

  Further, since the step sprocket 14 and the moving handrail drive sheave 17 are connected by the drive shaft 16, the rotation of the moving handrail drive sheave 17 is compared to the case where the step sprocket 14 and the moving handrail drive sheave 17 are connected by the transmission chain. Unevenness can be prevented.

  Further, since the moving handrail driving device 6 includes the pressing device 18 that presses the moving handrail 5 toward the moving handrail driving sheave 17, the frictional force generated between the moving handrail 5 and the moving handrail driving sheave 17 is generated. Can be increased. Thereby, generation | occurrence | production of the slip of the moving handrail 5 with respect to the moving handrail drive sheave 17 can be suppressed.

  The pressing device 18 includes a roller 22 disposed along the portion of the moving handrail 5 wound around the moving handrail driving sheave 17, and a support member 23 that supports the roller 22 and presses the roller 22 against the moving handrail 5. Therefore, the frictional force generated between the moving handrail 5 and the moving handrail drive sheave 17 can be increased with a simple configuration.

Embodiment 2. FIG.
3 is a side view showing an upper floor side portion of an escalator according to Embodiment 2 of the present invention, and FIG. 4 is a cross-sectional view taken along line IV-IV in FIG. In the figure, the pressing device 18 includes an endless belt 24 including a portion disposed along a portion of the moving handrail 5 wound around the moving handrail driving sheave 17 and a plurality of pulleys around which the belt 24 is wound. 25. The belt 24 is arranged so that the moving handrail driving sheave 17 and the belt 24 sandwich the moving handrail 5. The pulley 25 generates tension on the belt 24 and presses the belt 24 against the moving handrail 5. Other configurations are the same as those in the first embodiment.

  As described above, according to the moving handrail driving device 6 according to the second embodiment of the present invention, the pressing device 18 is arranged along the portion of the moving handrail 5 that is wound around the moving handrail driving sheave 17. Embodiment 1 includes an endless belt 24 including a portion and a plurality of pulleys 25 around which the belt 24 is wound to generate tension on the belt 24 and press the belt 24 against the moving handrail 5. Compared with the pressing device 18 described in (1), the pressing device 18 can press the moving handrail 5 with a large area. Thereby, the pressure applied to the moving handrail 5 can be reduced. As a result, it is possible to suppress the occurrence of damage to the moving handrail 5 due to the pressing device 18 pressing the moving handrail 5.

Embodiment 3 FIG.
5 is a cross-sectional view showing an upper floor portion of an escalator according to Embodiment 3 of the present invention, and FIG. 6 is a cross-sectional view taken along the line IV-IV in FIG. In the figure, the escalator does not include the rotational force transmission device 7 described in the first embodiment, and the drive shaft 16 is arranged so that the axis of the drive shaft 16 overlaps the extension of the rotation shaft 2 a of the drive unit 2. Has been. The drive shaft 16 is connected to the rotation shaft 2 a of the drive machine 2. As a result, the drive shaft 16 rotates integrally with the rotary shaft 2 a of the drive machine 2. The driving machine 2 is disposed inside a reversing portion where the step 3 in the moving path of the step 3 is reversed. Other configurations are the same as those in the first embodiment. The pressing device 18 may be the pressing device 18 described in the second embodiment.

  As described above, according to the moving handrail drive device 6 according to the third embodiment of the present invention, the drive shaft 16 is configured such that the axis of the drive shaft 16 overlaps the extension of the axis of the rotary shaft 2a of the drive unit 2. Therefore, the rotational force transmission device 7 can be eliminated as compared with the first embodiment. Thereby, the number of parts can be further reduced, and the cost of the escalator can be further reduced.

  In each of the above-described embodiments, the moving handrail driving device 6 having the pressing device 18 has been described. However, sufficient tension is applied to the moving handrail 5, and sufficient movement between the moving handrail 5 and the moving handrail driving sheave 17 is sufficient. As long as the handrail drive device 6 generates a frictional force, the handrail drive device 6 having the configuration without the pressing device 18 may be used.

  Moreover, in each said embodiment, although the escalator was demonstrated to the example as a passenger conveyor, for example, a moving walkway may be sufficient.

  DESCRIPTION OF SYMBOLS 1 Main frame, 2 drive machine, 2a rotating shaft, 3 steps, 4 step drive device, 5 moving handrail, 6 moving handrail drive device (moving handrail drive device of a passenger conveyor), 7 rotational force transmission device, 8 step main body, 9 Drive roller, 10 follower roller, 11 drive rail, 12 follower rail, 13 step chain, 14 step sprocket, 14a fitting hole, 15 bearing, 16 drive shaft, 17 moving handrail drive sheave, 17a fitting hole, 18 pressing device, 19 guide roller, 20 drive sprocket, 20a fitting hole, 21 transmission chain, 22 roller, 23 support member, 24 belt, 25 pulley.

Claims (5)

A drive shaft provided in a step sprocket for circulating the step chain and rotating together with the step sprocket by driving of a drive;
A moving handrail drive sheave provided on the drive shaft and rotating together with the drive shaft;
A moving handrail driving device for a passenger conveyor, comprising: a moving handrail wound around the moving handrail driving sheave and circulated by rotation of the moving handrail driving sheave.   The said drive shaft is arrange | positioned so that the axis line of the said drive shaft may overlap with the extension line of the axis line of the rotating shaft of the said drive machine, and it rotates integrally with the said rotating shaft. A moving handrail drive for passenger conveyors.   The moving handrail drive device for a passenger conveyor according to claim 1 or 2, further comprising a pressing device that presses the moving handrail toward the moving handrail drive sheave.   The pressing device includes an endless belt including a portion arranged along the portion of the moving handrail wound around the moving handrail drive sheave, and the belt is wound around to generate tension on the belt. 4. The moving handrail driving device for a passenger conveyor according to claim 3, further comprising a plurality of pulleys for pressing the belt against the moving handrail.   The pressing device includes a roller disposed along a portion of the moving handrail wound around the moving handrail drive sheave, and a support member that supports the roller and presses the roller against the moving handrail. The moving handrail drive device of the passenger conveyor of Claim 3 characterized by the above-mentioned.

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