JP5243017B2 - Passenger conveyor drive - Google Patents

Description

  TECHNICAL FIELD The present invention relates to an escalator in which a step is formed on adjacent treads and a drive device for a passenger conveyor such as an electric road where no step is generated between adjacent treads, and more particularly to a drive device for a passenger conveyor that supports a drive motor on a gear box. .

  For the purpose of reducing the installation space and reducing the number of parts, a passenger conveyor driving device that supports a driving motor on the top of a gear box has already been proposed as disclosed in, for example, Patent Documents 1 and 2. .

JP-A-6-87591 JP-A-6-92579

  In the passenger conveyor driving device disclosed in Patent Document 1, a driving motor is directly mounted on a gear box. Therefore, when the gear is incorporated in the gear box, the gear box must be divided into two parts. As a result, if the machining of the upper and lower split surfaces is not precise, the lubricating oil will leak out of the gearbox, making machining difficult and increasing the number of parts that require precision on the split surfaces. .

  On the other hand, the passenger conveyor drive device disclosed in Patent Document 2 is provided with an opening on the gear box, so that the gear can be incorporated into the gear box from this opening. However, a closing member for closing the opening of the gear box is required. For this purpose, a closing member having a configuration different from that of the gear box is prepared, and the driving motor is fixed to the closing member. For this reason, if the surface facing the gear box of the closing member and the mounting surface for fixing the driving motor cannot be machined with high accuracy, the driving motor cannot be installed with high accuracy, and as a result, accuracy is required. As the number of parts increases, new problems arise that require machining that requires high precision.

  An object of the present invention is to provide a driving device for a passenger conveyor that reduces the number of parts that require accuracy and reduces machining.

  In order to achieve the above object, the present invention has an opening formed at the top of the gear box, and a mounting seat for fixing the mounting leg of the driving motor is formed around the periphery of the opening.

  Since the mounting seat for mounting the drive motor is formed on the periphery of the opening of the gear box in this way, accurate machining is only required for the mounting seat surface of the mounting seat, and accuracy is also required to support the drive motor. Therefore, the number of parts requiring high accuracy can be reduced.

  Therefore, it is possible to obtain a passenger conveyor drive device that reduces the number of parts that require accuracy and reduces machining.

  Hereinafter, an embodiment of a passenger conveyor drive device according to the present invention will be described with reference to FIGS.

  FIG. 4 shows an escalator 1 as a passenger conveyor. The escalator 1 is installed across the upper and lower floors, and includes a frame 2 composed of an upper horizontal frame 2A, an intermediate inclined frame 2B, and a lower horizontal frame 2C. The drive sprocket 3 supported in the upper horizontal frame 2A, the driven sprocket 4 supported in the lower horizontal frame 2C, and the drive sprocket 3 and the driven sprocket 4 were wound endlessly. A plurality of steps 6 having a step chain 5, a step plate connected to the step chain 5 and always kept horizontal on the forward path side, and standing along positions corresponding to both sides in the width direction of the step 6 of the frame 2 And a moving handrail 8 that moves while being guided by the periphery of the balustrade panel 7, and a driving device 9 that drives the step chain 5 and the moving handrail 8.

  The drive device 9 includes a speed reducer 10 and a drive motor 11. As shown in FIGS. 1 to 3, the speed reducer 10 is a gear box 12 having a rectangular parallelepiped shape and having an opening 13 at the top, and a mounting seat 14 formed on the periphery of the opening 13 of the gear box 12. And a fixing seat 15 which is formed at the lower part of the gear box 12 and attaches the gear box 12 to a fixing member (for example, the upper horizontal frame 2A) of the escalator 1. On the other hand, the driving motor 11 has mounting legs 16 fixed to the mounting seat surface 14S of the mounting seat 14 with bolts or nuts.

  Further, the gear box 10 supports a plurality of bearings B1 and B2 on side walls 12A and 12B opposed to each other in the narrow direction of the rectangular parallelepiped, and supports the input shaft 17, the intermediate shaft 18 and the output shaft 19 on these bearings B1 and B2. ing. The input shaft 17, the intermediate shaft 18, and the output shaft 19 are, for example, fixed to the input gear 17G, the intermediate gears 18G1, 18G2, and the output gear 19G made of helical gears to constitute parallel shaft gears. An input sprocket 20 is fixed to the input shaft 17 protruding outward from the gear box 10 via a boss, and an output sprocket 21 is fixed to the output shaft 19 via a boss. Then, bearing covers BC1 and BC2 are provided around the bearings B1 and B2 from the outside of the gear box 10.

  A power transmission chain 23 is wound around the sprocket 22 provided on the rotating shaft of the drive motor 11 and the input sprocket 20, and a power transmission sprocket coaxial with the output sprocket 21 and the drive sprocket 3 (not shown). A power transmission chain 24 is wound between the two. Here, the input sprocket 20, the sprocket 22, and the power transmission chain 23 become the first transmission means for reaching the input shaft 17 with the power of the driving motor 11 according to the present invention, and the power transmission sprocket coaxial with the output sprocket 21 and the driving sprocket 3. The power transmission chain 24 (not shown) and the power transmission chain 24 serve as second transmission means for transmitting power from the output shaft 19 according to the present invention to the stepping plate of the passenger conveyor (escalator) and the driving unit of the moving handrail. The power transmitted to a power transmission sprocket (not shown) coaxial with the drive sprocket 3 drives a plurality of steps 6 via the drive sprocket 3 and a moving handrail 8 via a handrail drive mechanism (not shown). Is driving.

  In addition, although not shown in the drawing, the escalator 1 is provided with various safety devices, automatic operation devices, and energy saving operation means, which are controlled for operation based on a command via the control device 25. Furthermore, since the lubricating oil is contained in the gear box 12, and this lubricating oil may jump out of the opening 13 due to the rotation of the various gears 17G, 18G, 19G, a thin steel plate, a resin plate, etc. The opening member 13 is closed by screwing a closing member 26 made of a screw. By closing in this way, it is possible to prevent the splashing of the lubricating oil and the intrusion of dust into the gear box 12. Although the number of parts is increased by providing the closing member 26, the closing member 26 is not required to be accurate, so that the number of parts required for accuracy is not increased. In addition, the screw fixing work to the mounting seat 14 can be abolished or closed by attaching the welding member 26 integrally to the mounting leg 16 side of the driving motor 11 by welding or screwing without using the closing member 26 alone. The loss of the member 26 can be prevented.

  Further, when incorporating the various gears 17G, 18G, and 19G into the gear box 12, first, the intermediate shaft 18 having the bearings B1 and B2 mounted on both sides and the intermediate gears 18G1 and 18G2 being fixed therebetween is connected to the gear box 12. The bearings B1 and B2 are held by bearing holding portions provided inside the side walls 12A and 12B. Thereafter, in a state where the small gear 17G and the large gear 19G are held in the bearing housing 12, one end of the bearings B1 and B2 in which one end of the input shaft 17 and the output shaft 19 is installed through the side walls 12A and 12B. Next, the input gear 17G and the output gear 19G are penetrated, and finally the other side bearing is penetrated, whereby a parallel shaft gear can be incorporated. Therefore, it is not necessary to divide the gear box 12 vertically at the positions of the respective shafts 17 to 19, and it is not necessary to divide the gear box 12.

In addition, in this embodiment, the mounting seat 14 formed on the periphery of the opening 13 of the gear box 12 is replaced with a plane along a direction parallel to the stretching direction of the power transmission chain 23 in a plane. For example, oval bolt through-holes 27a to 27D are provided along a plane perpendicular to the gear shaft. For this reason, even if the power transmission chain 23 is slightly longer or shorter, the mounting leg 16 of the driving motor 11 is translated on the mounting seat 14 in the stretching direction of the power transmission chain 23 so that the power transmission chain 23 is properly It is possible to easily adjust the tension of the power transmission chain 23 by adjusting the tension so that the power transmission chain 23 is tensioned and then fixing with a bolt. Further, since the bolt through holes 27a to 27D are provided in the mounting seat 14 of the gear box 12, the centering operation between the sprocket 22 of the drive motor 11 and the input crest 20 of the speed reducer 10 can be simplified.

  In addition, the height of the drive device 9 is reduced by the amount that eliminates the need for a closing member that closes the opening of the gear box 12 that also serves to fix the drive motor 11 separately from the conventional gear box 12. Therefore, the installation of the driving device 9 in the narrow frame 2 can be made advantageous.

  According to the present embodiment, the opening 13 is formed in the upper part of the gear box 12 and the mounting seat 14 is formed in the periphery thereof so that the mounting leg 16 of the driving motor 11 is directly supported and fixed to the gear box 12. Therefore, there is no need for a dedicated component that requires accuracy for mounting the drive motor 11 to the gear box 12, and as a result, the number of components that require accuracy can be reduced. Furthermore, the machining that requires accuracy is only the mounting seat surface 14S of the mounting seat 14 to which the drive motor 11 is attached, and therefore, precise machining operations can be reduced.

  In addition, although the said embodiment demonstrated the escalator 1 as a passenger conveyor, it cannot be overemphasized that this invention is applicable also to an electric road.

The side view which shows the drive device of the passenger conveyor by this invention. The top view which follows the AA line of FIG. The longitudinal section front view which follows the BB line of FIG. The schematic side view which shows the escalator to which the drive device of the passenger conveyor of this invention was applied.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1 ... Escalator, 2 ... Frame body, 2A ... Upper horizontal frame, 2B ... Intermediate inclination frame, 2C ... Lower horizontal frame, 3 ... Drive sprocket, 4 ... Drive sprocket, 5 ... Step chain, 6 ... Step, 7 ... Railing panel , 8 ... moving handrail, 9 ... driving device, 10 ... reduction gear, 11 ... driving motor, 12 ... gear box, 13 ... opening, 14 ... mounting seat, 14S ... mounting seat surface, 15 ... fixed seat, 16 ... Mounting legs, 17 ... input shaft, 18 ... intermediate shaft, 19 ... output shaft, 17G ... input gear, 18G1, 18G2 ... intermediate gear, 19G ... output gear, 20 ... input sprocket, 21 ... output sprocket, 22 ... sprocket, 23 , 24 ... power transmission chain, 25 ... control device, 26 ... closing member, 27A to 27D ... bolt through hole, B1, B2 ... bearing, BC1, BC2 ... bearing cover.

Claims (7)

A gear box that pivotally supports a plurality of gears, a driving motor supported on the gear box, and the power of the driving motor via the plurality of gears, In the driving device for the passenger conveyor that transmits to the driving unit, an opening is formed at the top of the gear box, and a mounting seat for directly supporting and fixing the mounting leg of the driving motor to the gear box is formed at the periphery of the opening. And a driving device for a passenger conveyor, wherein a closing member for closing the opening is provided as a separate component from the mounting seat . 2. The passenger conveyor drive device according to claim 1, wherein the closing member is formed of a thin steel plate or a resin plate. Driving device for a passenger conveyor according to claim 2, characterized in that a fixing seat for mounting the gearbox to a fixed member of the passenger conveyor the bottom of the front Symbol gearbox. Before SL closing member, the driving device of passenger conveyor according to any one of claims 1 to 3, characterized in that provided integrally with the driving motor side. Before SL closing member, the driving device of passenger conveyor according to any one of claims 1 to 3, characterized in that is provided separately from said driving motor side. The mounting seat is formed with a bolt through hole for fixing the mounting leg of the driving motor with a bolt, and the bolt through hole is formed in an oval shape along a direction perpendicular to the gear shaft in a plan view. The drive device for a passenger conveyor according to any one of claims 1 to 5. A gear box, an opening formed in an upper portion of the gear box, a plurality of bearings fixed to opposite side walls of the gear box, a plurality of parallel shaft gears supported by and supported by the bearings, and the opening a mounting seat for a peripheral edge formed attachment leg of the drive motor parts fixed support fixed directly to the gearbox, a fixing seat for mounting the fixing member of the formed below the gearbox passenger conveyor gearbox, the And a closing member that closes the opening , which is a separate part from the mounting seat, and outputs the rotation axis of one parallel axis gear among the plurality of parallel axis gears as the input axis and the rotation axis of the remaining one parallel axis gear. A shaft, and a first transmission means for transmitting the power of the driving motor to the input shaft, and a second transmission means for transmitting the power from the output shaft to a driving portion of a passenger conveyor, The drive motor is bolted to the mounting seat Because the bolt through hole is formed, the bolt through hole is formed in an oval along a direction perpendicular to the plane to the gear shaft, further wherein the opening loading and unloading a plurality of parallel shaft gear A driving device for a passenger conveyor, characterized in that the driving device is formed in a size to be used.

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