JP4464737B2 - Moving handrail drive device for passenger conveyor - Google Patents

Description

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

Conventionally, as a moving handrail drive device for a passenger conveyor, the moving handrail is sandwiched between a driving roller disposed above the moving handrail and a driven roller disposed below the moving handrail. The thing which made it run a handrail was known (refer patent document 1).
JP 2001-139270 A (paragraph number 0025 to paragraph number 0028, FIG. 2)

  However, the moving handrail drive device for the passenger conveyor described in the above-mentioned Japanese Patent Application Laid-Open No. 2001-139270 is arranged on the same axis as the drive roller (drive vehicle) and transmits a driving force to the drive roller sprocket. The drive chain (transmission chain) is wrapped around the transmission chain gear, and the driven roller (pressing wheel) facing the drive roller across the moving handrail is pressed against the moving handrail by the tension generated when the drive chain circulates. In this state, the moving handrail is caused to travel by rotating the driving roller. For this reason, when a large running resistance is generated in the moving handrail, the driving roller and the driven roller are strongly pressed against the moving handrail, and both surfaces of the moving handrail are damaged.

  Therefore, in order to prevent the damage, in the moving handrail drive device of the passenger conveyor described in Japanese Patent Laid-Open No. 2001-139270, the drive chain sprocket (main transmission chain gear) around which the drive chain is wound. And a drive chain sprocket between the main chain sprocket (drive chain gear) provided on the same axis, a torque transmission limiting mechanism is provided, resulting in excessive travel resistance on the moving handrail. By restricting the torque transmitted from the main chain sprocket to the drive chain sprocket, the driving roller and the driven roller are prevented from being strongly pressed against the moving handrail. However, until the torque transmission limiting mechanism is activated, the driving roller and the driven roller are strongly pressed against the moving handrail, which causes strong indentations on both sides of the moving handrail and cannot prevent damage to the moving handrail. was there.

  The present invention has been made in view of the above-described problems, and its purpose is to prevent damage to the moving handrail even if strong traveling resistance such as trying to prevent the traveling of the moving handrail occurs in the moving handrail. It is in providing the moving handrail drive device of the passenger conveyor which can prevent reliably.

The purpose is to synchronize the balustrade with the footboard, a plurality of footboards for carrying passengers, balustrades erected on both sides of the footboards, a housing for storing the footboards and fixing the balustrades. An endless moving handrail, an electric motor that is provided in the housing and serves as a driving source for the stepping plate and the moving handrail, and a moving handrail driving device that moves the moving handrail in the same direction as the moving direction of the stepping plate. The moving handrail drive device is arranged so as to be in contact with the inner side of the moving handrail, the driving roller support plate for rotating and supporting the driving roller, and the driving roller support plate for the length of the moving handrail. A guide member that is guided so as to move up and down in a direction substantially perpendicular to the direction and attached to the housing; A driven roller that sandwiches the moving handrail, a driven roller support plate body that is rotatably supported by the driven roller and attached to the housing, and a drive that is disposed on the same axis as the drive roller and transmits a driving force A roller sprocket, a drive chain wound around the drive roller sprocket to transmit a driving force, a drive chain sprocket around which the drive chain is wound and attached to the drive roller support plate body, A main chain sprocket arranged on the same axis as the drive chain sprocket, a main chain wound around the main chain sprocket to transmit the driving force, and the housing to change the direction of the main chain Rotating supported idlers A rocket, a moving handrail sprocket provided opposite to the main chain sprocket, around which the main chain is wound, a driving sprocket arranged coaxially with the moving handrail sprocket, and a driving force of the electric motor applied to the driving sprocket A drive chain for transmission and a reaction force that is attached to the housing and abuts against the force that contacts the lower surface of the support plate for the drive roller and moves the support plate for the drive roller toward the moving handrail. This can be achieved by comprising the reaction force generating member.

According to the present invention, a strong running resistance is generated in the moving handrail traveling, even when the driving roller support plate member is moved more to the movement reaction force by the reaction force generating member, to be constantly suppressed Thus, the moving handrail driving device for the passenger conveyor can be provided, in which the driving roller and the driven roller are not excessively pressed against the moving handrail, the damage of the moving handrail is prevented, and the life of the moving handrail can be extended.

  Hereinafter, an embodiment of a moving handrail drive device for a passenger conveyor according to the present invention will be described with reference to the drawings. FIG. 1 is a schematic structural diagram of the entire passenger conveyor showing an embodiment of the present invention. FIG. 2 is an enlarged plan view of a moving handrail drive device portion of a passenger conveyor according to an embodiment of the present invention. FIG. 3 is an enlarged side view of a moving handrail drive device portion of a passenger conveyor according to an embodiment of the present invention. FIG. 4 is a schematic structural diagram of a reaction force generating member of the moving handrail driving device according to the embodiment of the present invention. FIG. 5 is a characteristic diagram of the clamping pressure of the driving roller and the running resistance of the moving handrail of the moving handrail driving device according to the embodiment of the present invention.

  In FIG. 1, a passenger conveyor 1 is an escalator, and stores a plurality of footboards 2 for conveying passengers, a balustrade 3 erected on both sides of the footboards 2, and a plurality of footboards 2. A frame 4 made of a steel frame structure that fixes the frame 3, an endless moving handrail 5 that moves on the balustrade 3 in synchronism with the footboard 2, and a stepboard 2 and a moving handrail 5 that are provided in the housing 4 An electric motor 6 serving as a drive source and a moving handrail driving device 7 that moves the moving handrail 5 in the same direction as the moving direction of the footboard 2 are provided. Here, the foot board 2 consists of a step, a pallet, or a belt, and is connected endlessly.

  As shown in FIGS. 2 to 4, the moving handrail driving device 7 rotates and supports a pair of driving rollers 8 and 8A disposed so as to be in contact with the inner side (back surface) of the moving handrail 5 and the driving rollers 8 and 8A. A pair of steel driving plate 9 for driving roller, and a pair of driving roller supporting plate 9 that is guided to move up and down in a direction substantially perpendicular to the longitudinal direction of moving handrail 5 and is attached to housing 4. A pair of driven rollers 11 and 11A that are arranged so as to be in contact with the outer side (surface) of the guide rails 10 and 10A and that are in contact with the driving rollers 8 and 8A and sandwich the movable handrail 5 and the driven rollers 11 , 11A is rotatably supported and mounted on the housing 4 and is made of a steel driven support plate 12 for a driven roller and a drive roller 8 and 8A arranged on the same axis to transmit a driving force. The roller sprockets 13 and 13A, the drive chain 14 wound around the drive roller sprockets 13 and 13A and transmitting the driving force, and the drive chain 14 is wound and attached to the drive roller support plate 9 A drive chain sprocket 15; a main chain sprocket 16 disposed on the same axis as the drive chain sprocket 15; a main chain 17 wound around the main chain sprocket 16 to transmit a driving force; In order to change the orientation of the main chain 17, idler sprockets 18 and 18 A rotatably supported by the housing 4, a moving handrail sprocket 19 provided opposite to the main chain sprocket 16 and around which the main chain 17 is wound, A drive sprocket 20 disposed coaxially with the moving handrail sprocket 19, a drive chain 21 that transmits the drive force of the electric motor 6 to the drive sprocket 20, and a drive roller support plate body 9 that is disposed below and attached to the housing 4. And at least the reaction force generating member 22 formed.

As shown in FIG. 4, the reaction force generating member 22 includes at least a cylindrical rod case 23, a coil spring-like elastic body 24 housed in the rod case 23, and a distant piece 25 . . In the rod case 23, the upper end opening side of the rod case 23 is brought close to the lower surface of the driving roller support plate body 9, and the distant piece 25 is fitted to the lower end opening side of the rod case 23. The elastic body 24 housed in the rod case 23 has its upper end side abutted against the lower surface of the driving roller support plate body 9 and its lower end side fitted to the lower end opening side of the rod case 23. 25 is brought into contact with the upper surface. The distant piece 25 is formed with a flange body 25A that is supported by the housing 4 and constitutes a blocking means for blocking the movement of the driving roller fixing plate 9.

  The rod case 23 of the reaction force generating member 22 is pushed by the driving roller support plate body 9 to move downward when the driving roller support plate body 9 moves downward. The lower end surface of the rod case 23 is prevented from colliding with the flange body 25A. The movement distance of the rod case 23 is the distance A shown in FIG. 4, that is, the distance from the lower end surface of the rod case 23 to the upper surface of the flange body 25A of the distant piece 25.

  The elastic body 24 of the reaction force generating member 22 does not generate a reaction force that pushes up the drive roller support plate 9 in a state before the passenger conveyor 1 is started, that is, a state before the electric motor 6 is rotated. The upper end of the elastic body 24 is brought into contact with the lower surface of the driving roller support plate body 9. Moreover, the elastic body 24 of the reaction force generating member 22 causes the drive roller support plate 9 to move downward toward the moving handrail 5 when the drive roller support plate 9 moves downward. A reaction force F2 to be raised is generated. The reaction force F2 increases in proportion to the moving distance of the drive roller support plate body 9, in other words, the displacement L of the drive roller support plate body 9. If the spring constant of the elastic body 24 is K, the reaction force F2 is expressed by K × L.

  In the above configuration, when the electric motor 6 is rotated, the drive chain 21 is rotated and the drive sprocket 20 is rotated. When the drive sprocket 20 rotates, the moving handrail sprocket 19 provided coaxially with the drive sprocket 20 rotates. When the moving handrail sprocket 19 rotates, the main chain 17 wound around the moving handrail sprocket 19 rotates. When the main chain 17 rotates, the main chain sprocket 16 around which the main chain 17 is wound and the drive chain sprocket 15 provided coaxially with the main chain sprocket 16 rotate together. When the drive chain sprocket 15 rotates, the drive chain 14 wound around the drive chain sprocket 15 rotates. When the drive chain 14 rotates, the drive rollers 8 and 8A around which the drive chain 14 is wound rotate to cause the moving handrail 5 to travel in the longitudinal direction of the moving handrail 5.

  Normally, when the main chain 17 is rotating, the main chain 17 is pulled downward by the driving roller support plate body 9 due to the tension generated in the main chain 17, and the driving rollers 8, 8A are moved by the handrail. 5 is pressed between the driving rollers 8 and 8 </ b> A and the driven rollers 11 and 11 </ b> A and travels in the longitudinal direction of the moving handrail 5.

  When the traveling resistance R of the moving handrail 5 increases, the tension generated in the main chain 17 increases and the main chain sprocket 16 is pulled downward, so that the driving roller support plate 9 is guided by the guide member 10, The drive rollers 8 and 8A are guided by 10A and moved downward, and move toward the moving handrail 5, but due to the reaction force F2 by the elastic body 24 of the reaction force generating member 22, the support plate for the drive roller The downward movement of the body 9 is suppressed. Therefore, the moving handrail 5 has a pinching pressure P due to a force obtained by subtracting the reaction force F2 due to the elastic body 24 of the reaction force generating member 22 from the pressing force F1 applied to the drive rollers 8 and 8A by the tension generated in the main chain 17. , Will always join.

  As shown in FIG. 5, the relationship between the pinching pressure P by the driving rollers 8 and 8 </ b> A and the travel resistance R of the moving handrail 5 increases the pinching pressure P as the travel resistance R increases. In FIG. 5, the characteristic straight line Y indicates the clamping pressure P <b> 0 necessary for running the moving handrail 5. In FIG. 5, the characteristic straight line Y <b> 1 is a reaction force generating member 22 from a pressing force F <b> 1 (hereinafter referred to as a pressing force F <b> 1 due to the tension of the main chain 17) applied to the driving rollers 8, 8 </ b> A by the tension generated in the main chain 17. The pinching pressure P (hereinafter referred to as the pinching pressure P applied to the moving handrail 5) by the force obtained by subtracting the reaction force F2 by the elastic body 24 is shown. In FIG. 5, the characteristic straight line Y2 indicates that there is no clamping force P1 due to the pressing force F1 applied to the driving rollers 8 and 8A by the tension generated in the main chain 17 (there is no reaction force F2 due to the elastic body 24 of the reaction force generating member 22). This shows the clamping pressure applied to the moving handrail 5 only by the pressing force F1 due to the tension of the chain 17, which is hereinafter referred to as the clamping pressure P1 due to the pressing force F1. As can be seen from FIG. 5, the clamping pressure P (characteristic straight line Y1) on the moving handrail 5 is smaller than the clamping pressure P1 (characteristic straight line Y2) due to the pressing force F1, and it is not necessary for the moving handrail 5 to travel. It is larger than the pinching pressure P0 (characteristic line Y). The pinching pressure P (characteristic straight line Y1) to the moving handrail 5 increases the spring constant K of the elastic body 24, thereby increasing the reaction force F2 due to the elastic body 24 of the reaction force generating member 22. It can be seen that it can be set to a value slightly larger than the pinching pressure P0 as necessary to run the vehicle.

  In the above configuration, when the driving rollers 8 and 8A are moved downward together with the driving roller support plate body 9 by the tension F1 of the main chain 17 while the moving handrail 5 is traveling, the elastic body 24 of the reaction force generating member 22 Since the reaction force F2 is generated, the moving handrail 5 has a pressing force F1 due to the tension of the main chain 17 and a pinching pressure P obtained by subtracting the reaction force F2 due to the elastic body 24 of the reaction force generating member 22, that is, the moving handrail. The pinching pressure P to 5 is always applied. Therefore, even if a strong resistance force is generated on the moving handrail 5 during traveling, the driving rollers 8 and 8A and the driven rollers 11 and 11A are not excessively pressed against the moving handrail 5, and damage to the moving handrail 5 is prevented. The life of the moving handrail 5 can be extended. Further, the reaction force F2 caused by the elastic body 24 of the reaction force generating member 22 reduces the force applied to the shafts of the driving rollers 8 and 8A and the driven rollers 11 and 11A, thereby preventing the shaft and components related to the shaft from being damaged. The life of the moving handrail driving device 7 can be extended.

  Furthermore, according to the said embodiment, it is only necessary to install one reaction force generating member 22 in the lower part of the driving roller support plate body 9, and the mounting of the moving handrail driving device 7 into the narrow housing 4 of the passenger conveyor 1. Can be done without difficulty.

  Furthermore, according to the above embodiment, the downward movement of the drive roller support plate body 9 is completely prevented by the lower end surface of the rod case 23 of the reaction force generating member 22 colliding with the flange body 25A. Therefore, it is possible to reliably prevent the driving rollers 8 and 8A and the driven rollers 11 and 11A from being excessively pressed against the moving handrail 5.

  Furthermore, according to the above-described embodiment, the upper end of the elastic body 24 of the reaction force generating member 22 is prevented so that the reaction force F2 that pushes the drive roller support plate 9 upward is not generated in the state before the passenger conveyor 1 is activated. Is held in contact with the lower surface of the support plate 9 for the driving roller, so that the holding pressure P0 necessary for running the moving handrail 5 can be maintained, and the moving handrail 5 is activated when the passenger conveyor 1 is started. Will not slip.

  Furthermore, according to the above embodiment, the pinching pressure P due to the force obtained by subtracting the reaction force F2 due to the elastic body 24 of the reaction force generating member 22 from the pressing force F1 due to the tension of the main chain 17, that is, the pinching pressure to the moving handrail 5 Since P is set to be larger than the clamping pressure P0 necessary for running the moving handrail 5, the moving handrail 5 does not slip while the moving handrail 5 is running.

  In the said embodiment, although the passenger conveyor 1 was demonstrated with the escalator, it is not limited to this. The passenger conveyor 1 may be a moving sidewalk. Moreover, in the said embodiment, although the moving handrail 5 is made to drive | work with the two drive rollers 8 and 8A and the two driven rollers 11 and 11A, it is not limited to this. Even if the driving rollers 8 and 8A and the driven rollers 11 and 11A exceed two, the same effect as that of the above embodiment can be obtained.

It is a schematic structure figure of the whole passenger conveyor which shows one embodiment of the present invention. It is an enlarged plan view of the moving handrail drive device portion of the passenger conveyor according to one embodiment of the present invention. It is an expanded side view of the moving handrail drive device part of the passenger conveyor concerning one Embodiment of this invention. It is a schematic structure figure of the reaction force generating member of the movable handrail drive concerning one embodiment of the present invention. It is a characteristic view of the pinching pressure of the drive roller of the movable handrail drive device concerning one Embodiment of this invention, and the running resistance of a movable handrail.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Passenger conveyor 2 Footboard 3 Railing 4 Housing 5 Moving handrail 6 Electric motor 7 Moving handrail drive device 8, 8A A pair of driving roller 9 A supporting plate body for driving rollers 10, 10A A pair of guide members 11, 11A A pair of driven rollers 12 A driven roller Support plate body 13, 13A Drive roller sprocket 14 Drive chain 15 Drive chain sprocket 16 Main chain sprocket 17 Main chain 18, 18A Idler sprocket 19 Moving handrail sprocket 20 Drive sprocket 21 Drive chain 22 Reaction force generating member 23 Rod case 24 Elastic body 25 Distant piece 25A Flange body

Claims (4)

A plurality of footboards for carrying passengers, balustrades erected on both sides of these footboards, a housing for storing the plurality of footboards and fixing the balustrade, and endlessly moving on the balustrade in synchronization with the footboards And a moving handrail driving device that moves the moving handrail in the same direction as the moving direction of the footboard, the moving handrail being provided in the housing and serving as a driving source for the footboard and the moving handrail. A driving roller disposed so as to be in contact with the inside of the moving handrail, a driving roller support plate body that rotationally supports the driving roller, and the driving roller support plate body with respect to the longitudinal direction of the moving handrail A guide member that is guided so as to move up and down in a substantially perpendicular direction and attached to the housing, and is arranged so as to be in contact with the outside of the movable handrail and is paired with the drive roller. A driven roller that sandwiches the moving handrail, a driven roller support plate that is rotatably supported by the driven roller, and a sprocket for the driving roller that is disposed on the same axis as the driving roller and transmits the driving force A drive chain that is wound around the drive roller sprocket to transmit the drive force, a drive chain sprocket that is wound around the drive chain and attached to the drive roller support plate, and the drive chain A main chain sprocket arranged on the same axis as the sprocket, a main chain wound around the main chain sprocket and transmitting a driving force, and rotatably supported by the housing to change the direction of the main chain With idler sprocket A moving handrail sprocket provided opposite to the main chain sprocket, around which the main chain is wound, a driving sprocket arranged coaxially with the moving handrail sprocket, and a drive for transmitting the driving force of the electric motor to the driving sprocket A reaction force that generates a reaction force that is attached to the chain and the lower surface of the drive roller support plate body and that opposes the force that moves the drive roller support plate body toward the moving handrail. A moving handrail drive device for a passenger conveyor, characterized by comprising a generating member. 2. The moving handrail drive device for a passenger conveyor according to claim 1, wherein the reaction force generating member includes blocking means for blocking the movement of the driving roller support plate body. In the state before rotating the electric motor, the upper end of the elastic body of the reaction force generating member is placed on the lower surface of the drive roller support plate body so as not to generate a reaction force that pushes the drive roller support plate body upward. The moving handrail drive device for a passenger conveyor according to claim 1 or 2, wherein the abutment is made to contact . The holding pressure to the moving handrail by the force obtained by subtracting the reaction force of the reaction force generating member from the pressing force due to the tension of the main chain is set to be larger than the holding pressure required to run the moving handrail. 4. A moving handrail driving device for a passenger conveyor according to claim 1, 2, or 3.

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