JP3844749B2 - Rotating transport drive device - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention drives a step or a rubber plate endlessly by rotating a chain or an endless belt like the escalator in a narrow sense and the escalator or a moving sidewalk in a broad sense, and on the step or the rubber plate. The present invention relates to a drive device for driving a “rotary transport machine” for transporting people and objects.
[0002]
[Prior art]
As shown in FIGS. 4 and 5, in general, driving of the escalator (rotary transport machine) ES is generally performed by decelerating the rotation of the motor 2 by the speed reducer 4 and driving the step (rotating body) of the escalator ES via the chain 6. This is performed in the form of driving a sprocket 8 (see, for example, Patent Document 1). When the sprocket 8 is driven, the step chain 12 rotates via the step chain sprocket 10 and the step ST is driven at a predetermined speed.
[0003]
However, in the conventional drive device 14 applied to the escalator ES, the power transmission of the motor 2 and the speed reducer 4 is performed by the belt 16, and therefore maintenance such as tension adjustment of the belt 16 is required periodically. In addition, due to its structure, the number of parts is likely to increase, and there is a problem that parts costs and assembly costs increase.
[0004]
As a means for solving such a problem, various drive devices that do not use a belt or other winding transmission means have been proposed.
[0005]
For example, the drive device 20 shown in FIGS. 6 and 7 includes a motor 24 placed on a base 22 and a speed reducer 26, and a motor shaft 24 </ b> A of the motor 24 and an input shaft of the speed reducer 26. 26A is connected by a coupling 28 to transmit power. In the driving device 20, a flywheel 30 for applying an inertial force to the step ST is provided on the motor shaft 24A, and a brake 32 for braking the step ST is provided on the input shaft 26A of the speed reducer. Is provided. The same parts as those in FIGS. 4 and 5 are given the same reference numerals, and the description thereof will be omitted below.
[0006]
8 to 10, the motor 42 is placed vertically on the speed reducer 44, and the motor shaft 42A of the motor 42 and the input shaft 44A of the speed reducer 44 are connected to the flywheel 46 and the brake 48. It is connected by a coupling 50 that is also used to transmit power. In the drive device 20, an orthogonal shaft gear mechanism is employed as the speed reduction mechanism of the speed reducer 44.
[0007]
Further, the drive device 60 shown in FIG. 11 meshes with both the gear 66A of the drive shaft 66 of the step ST and the gear 68A of the handrail drive shaft 68 on the output shaft 64A of the speed reducer 64 integrally coupled with the motor 62. The output gear 70 is provided so that the step drive sprocket 66B and the handrail drive wheel 68B are directly driven to rotate.
[0008]
By the way, in such a drive device, it is necessary to adjust the movement (inertia force and braking force) of the step ST according to the use environment and the like, so that the brake is regularly maintained, and in some cases, the flywheel or It is necessary to replace the brake with one having a different size (diameter or width). In general, in order to obtain the inertial force required for a rotary transport machine, it is necessary to increase the outer diameter of the flywheel. Therefore, in order to realize a compact device and save space, it is necessary to arrange the flywheel. It becomes important in design.
[0009]
[Patent Document 1]
JP-A-6-87591
[Problems to be solved by the invention]
However, in the conventional drive device 20 in which the motor 24 is placed horizontally, since the flywheel 30 is provided on the motor shaft 24A, the dimension in the axial direction of the motor 24 is particularly long, which makes the device compact and saves space. In addition to the limitations, there is a problem that the attachment and removal of the flywheel 30 are not easy and the maintainability is low.
[0011]
Further, in the conventional drive device 40 in which the motor 42 is installed vertically, since the coupling 50 that also serves as the flywheel 46 is used, the size and the mounting location of the flywheel 46 are limited, and the maintainability is low. There was a problem.
[0012]
Further, in the conventional driving device 60 that directly drives the step ST, the installation space of the driving device 60 itself is limited, so that the size and the mounting location of the flywheel are limited, and the driving device 60 is connected to the escalator. Since it is arranged in the ES, there is a problem that the maintainability is low.
[0013]
The present invention has been made to solve such problems, and by improving the freedom of design of the flywheel, it is possible to realize compactness of the device, space saving, improvement of maintainability, etc. An object of the present invention is to provide a driving device for a rotary transport machine.
[0014]
[Means for Solving the Problems]
The present invention includes a flywheel shaft on which a flywheel is installed separately from a rotation shaft of a power transmission unit that transmits power to a rotary transporter , and further accommodates and supports at least a part of the rotation shaft and the flywheel shaft. Rutotomoni comprising a gearbox which, in the flywheel shaft, the gear is rotated by one of gears provided on the rotary shaft is provided, by any of the gear provided on said rotary shaft, said gearbox In the above, the problem can be solved by allowing the power to be branched to the rotating shaft and the flywheel shaft .
[0015]
According to the present invention, the mounting position and size of the flyhole are not limited by the structure of the power transmission unit, and the degree of freedom in designing the flyhole can be improved as compared with the conventional drive device. Therefore, it is possible to optimally design the mounting position and size of the flyhole according to the use environment and the like, and it is possible to easily realize compactness of the driving device, space saving, improvement of maintenance, and the like.
[0016]
Therefore, for example, the flywheel installed on the flywheel shaft is disposed above the drive sprocket provided on the output shaft of the power transmission unit, and the end surface on the flywheel side in the gear box that supports the flywheel shaft. Is positioned inside the gear box from the drive sprocket side end face of the gear box supporting the output shaft to form a space, and at least a part of the flywheel is accommodated in the space, the flywheel Maintenance is further facilitated, and the apparatus can be made compact and space-saving. Further, since the flywheel and the drive sprocket are arranged at positions shifted in the axial direction so as not to interfere with each other, it is possible to apply flywheels and drive sprockets of various sizes (diameters and widths).
[0017]
If a brake is further provided and the brake and the flywheel are arranged on both sides of the flywheel shaft, the design freedom of the brake can be improved. In addition, it is possible to improve the maintainability of the brake such as adjusting the brake clearance, and it is easy to adjust the balance between the inertial force by the flywheel and the braking force by the brake.
[0018]
Furthermore, if a motor is provided and the motor is disposed below the brake, the apparatus can be made compact and space-saving. In this case, if the motor shaft of the motor and the output shaft of the power transmission unit are arranged coaxially and the flywheel shaft is arranged above the output shaft, the device can be further compacted and saved. Space becomes possible.
[0019]
The present invention includes, for example, an input shaft having a first gear, a second gear disposed in parallel with the input shaft and meshing with the first gear of the input shaft, and an intermediate shaft having a third gear; An output shaft having a fourth gear disposed parallel to the intermediate shaft and meshing with the third gear of the intermediate shaft; and a drive sprocket; and disposed parallel to the intermediate shaft; and the second shaft of the intermediate shaft. This can be realized by a drive device having a flywheel shaft having a fifth gear meshing with the gear and a flywheel. In this case, in addition to the effects described above, it is possible to reduce noise by adopting a parallel shaft gear mechanism.
[0020]
Further, the flywheel included in the flywheel shaft may be disposed above the drive sprocket included in the output shaft, and the flywheel may be disposed axially inward of the drive sprocket. The flywheel shaft may have a brake, and the brake and the flywheel may be disposed on both sides of the flywheel shaft.
[0021]
Furthermore, if the input shaft, the intermediate shaft, and the flywheel shaft are arranged on the same plane, the apparatus can be made compact and space-saving.
[0022]
As described at the beginning, in this specification, the term “rotary transport aircraft” refers to an endless rotating body such as a step or a rubber plate by rotating a chain or an endless belt such as an escalator or a moving walkway. In the following, for the sake of convenience, the name "escalator" will be used to represent a person who is driven in a shape and transports a person or an object on the step or rubber plate.
[0023]
DETAILED DESCRIPTION OF THE INVENTION
Embodiments of the present invention will be described below with reference to the drawings.
[0024]
FIG. 1 is a schematic plan view showing a part of an escalator to which a drive device according to an embodiment of the present invention is applied, FIG. 2 is a schematic side view thereof, and FIG. 3 is a detailed sectional view of the drive device.
[0025]
The drive device 100 is obtained by directly and integrally coupling a motor 112 and a speed reducer 114.
[0026]
The tip of the motor shaft 112A of the motor 112 is inserted into the gear box 116 of the speed reducer 114 as it is, and the motor shaft 112A also serves as the input shaft of the speed reducer 114.
[0027]
The reduction gear 114 is a reduction gear of a so-called parallel shaft gear mechanism, and includes a gear box 116 in which an upper upper gear box 116A in FIG. 3 and a lower lower gear box 116B in FIG. 3 are integrated. ing. In the gear box 116, an input shaft (motor shaft) 112A, an intermediate shaft 118, and an output shaft 120 are arranged in parallel to each other via bearings 122 to 126, respectively, and the input shaft 112A and the output shaft 120 are arranged. Are arranged coaxially with L1 in FIG. 3 as the axis. As the helical pinion (first gear) 130 on the input shaft 112 </ b> A meshes with the helical gear (second gear) 132 on the intermediate shaft 118, the first reduction stage GS <b> 1 becomes the helical pinion (third gear) 134 on the intermediate shaft 118. And a helical gear (fourth gear) 136 on the output shaft 120 are engaged with each other to form a second reduction stage GS2. The output shaft 120 has an extending part 120A that protrudes and extends outside the gear box 116, and a driving sprocket 138 for driving the step of the escalator ES is connected to the extending part 120A. Yes.
[0028]
The rotational power input from the motor shaft 112A is converted into the first reduction stage GS1 comprising the helical pinion 130 on the input shaft 112A and the helical gear 132 on the intermediate shaft 118 → the helical pinion 134 on the intermediate shaft 118 and the helical gear on the output shaft 120. The second deceleration stage GS2 consisting of 136 is decelerated by two stages along the path of the output shaft 120, and is finally transmitted to the escalator ES via the drive sprocket 138 of the output shaft 120.
[0029]
The speed reducer 114 includes a flywheel shaft 140 in addition to the input shaft 112A, the intermediate shaft 118, and the output shaft 120 of the power transmission unit that transmits such power. The flywheel shaft 140 is installed in the gear box 116 via bearings 142 and 143 so as to be parallel to the input shaft 112A, the intermediate shaft 118, and the output shaft 12 and on the same plane. On the flywheel shaft 140, a helical pinion (fifth gear) 146 that can mesh with the helical gear (second gear) 132 of the intermediate shaft 118 is provided. Further, both ends of the flywheel shaft 140 protrude and extend outside the upper gear box 116A, and the flywheel 144 on the left side in FIG. 3 is sandwiched between the upper gear box 116A on both sides of the flywheel shaft 140. In FIG. 3, a right brake 145 is provided. Note that these “both sides” are in a broad sense, and an accessory such as a cap or an encoder may be provided on the outer side in the axial direction of the flywheel 114 and the brake 145, and may not necessarily be completely at the end. Good.
[0030]
The flywheel 144 arranged on the left side in FIG. 3 is arranged above the drive sprocket 138 connected to the output shaft 120, and a part of the flywheel 144 is disposed on the flywheel side end face F1 of the upper gear box 116A. The gear box 116B is accommodated in a space S1 formed by being positioned inward of the drive sprocket side end face F2 in the gear box. Further, the brake 145 arranged on the right side in FIG. 3 is equipped to maintain the fixing of the step ST when the escalator ES is stopped and to realize the stop from the driving state, and the structure itself. Is well known.
[0031]
The flywheel 144 rotates together with the flywheel shaft 140 by driving the power transmission unit, and applies an inertial force to the power transmission unit via the intermediate shaft 118 when the escalator ES is stopped. On the other hand, the brake 145 applies a braking force to the power transmission unit via the intermediate shaft 118 by braking the flywheel shaft 140.
[0032]
According to the drive device 100 according to the embodiment of the present invention, the flywheel separately from the input shaft 112A, the intermediate shaft 118, and the output shaft 120, which are the rotation shafts of the power transmission unit that transmits power to the elevator (rotary transport aircraft) ES. Since the flywheel shaft 140 for installing the wheel 144 is provided, and the flywheel shaft 140 is provided with the helical pinion 146 that is rotationally driven by the helical gear 132 of the intermediate shaft 118, the mounting position of the flyhole 144 depends on the structure of the power transmission unit. As a result, the degree of freedom in designing the flyhole 144 can be improved as compared with the conventional driving device. Therefore, it is possible to optimally design the attachment position and size of the flyhole 144 according to the use environment and the like, and the drive device 100 can be easily made compact, space-saving, improved maintainability, and the like. .
[0033]
Specifically, the flywheel 144 is disposed above the drive sprocket 138 provided on the output shaft 120, and the flywheel side end face F1 in the upper gear box 116A is arranged from the drive sprocket side end face F2 in the lower gear box 116B. Since the space portion S1 is formed inside the gearbox and at least a part of the flywheel 144 is accommodated in the space portion S1, the flywheel 144 is easily maintained and the drive device 100 is made compact. Space can be saved. Further, since the flywheel 144 and the drive sprocket 138 are arranged at positions shifted in the axial direction so as not to interfere with each other, it is possible to apply flywheels and drive sprockets of various sizes (diameters and widths). .
[0034]
In addition, since the driving device 100 includes the brake 145 and the brake 145 and the flywheel 144 are arranged on both sides of the flywheel shaft 140, the design freedom of the brake 145 can be improved. In addition, it is possible to improve the maintainability of the brake 145, such as adjusting the brake clearance, and to easily adjust the balance between the inertial force by the flywheel 144 and the braking force by the brake 145.
[0035]
In the driving device 100, the motor 112 is disposed so as to be positioned below the brake 145. Further, the motor shaft 112 </ b> A of the motor 112 and the output shaft 120 are arranged coaxially, and the flywheel shaft 140 is arranged above the output shaft 120. Further, the input shaft 112A, the intermediate shaft 118, the output shaft 120, and the flywheel shaft 140 are arranged on the same plane. As a result, the device can be made compact and space-saving, and in particular, the width dimension of the drive device 100 when the motor 112 is viewed from the axial direction can be reduced.
[0036]
In the driving device 100, since the motor 112 and the speed reducer 114 are directly and integrally coupled, maintenance is easier compared to a conventional driving device that uses a belt or the like for power transmission between the motor and the speed reducer. In addition, the cost of parts and assembly costs can be reduced by reducing the number of parts.
[0037]
The drive device according to the present invention is not limited to the shape and structure of the drive device 100 in the above embodiment, and a flywheel is installed separately from the rotating shaft of the power transmission unit that transmits power to the rotary transport aircraft. What is necessary is just to provide the flywheel axis | shaft to perform and to provide the gear rotated by the gearwheel provided in the said rotating shaft to the said flywheel axis | shaft.
[0038]
That is, in the above embodiment, the helical pinion 146 on the flywheel shaft 140 is rotationally driven by the helical gear 132 on the intermediate shaft 118, but the present invention is not limited to this.
[0039]
For example, the helical pinion 146 may be rotationally driven by a gear provided on another rotating shaft of the power transmission unit.
[0040]
Moreover, while providing the other gear which does not contribute to power transmission to the rotating shaft of a power transmission part, the helical pinion 146 may be rotationally driven via this other gear.
[0041]
Furthermore, in addition to the rotating shaft of the power transmission unit and the flywheel shaft on which the flywheel is installed, an idle shaft is provided, and the helical pinion 146 is indirectly driven to rotate through an idle gear provided on the idle shaft. May be.
[0042]
Moreover, although the brake 145 was installed in the flywheel shaft 140, this invention is not limited to this, For example, you may install the brake 145 on the motor shaft 112A.
[0043]
Furthermore, in the above embodiment, a two-stage helical parallel shaft gear mechanism is employed as a power transmission unit in order to reduce noise, but the present invention is not limited to this, and other gear mechanisms are used. You may apply. Of course, it is not limited to “helical” or limited to a speed reducer.
[0044]
【The invention's effect】
According to the present invention, by improving the degree of freedom in designing the flywheel, it is possible to achieve compactness of the device, space saving, improvement in maintenance, and the like.
[Brief description of the drawings]
FIG. 1 is a schematic plan view showing a part of an escalator to which a drive device according to an embodiment of the present invention is applied. FIG. 2 is a schematic side view of FIG. 1. FIG. 3 is a detailed sectional view of the drive device in FIG. 4 is a schematic plan view showing a conventional drive device. FIG. 5 is a schematic side view of FIG. 4. FIG. 6 is a schematic plan view showing a conventional drive device in which a motor is placed horizontally. FIG. 8 is a schematic plan view showing a conventional drive device in which a motor is vertically installed. FIG. 9 is a schematic side view of FIG. 8. FIG. 10 is a detailed sectional view of the drive device in FIG. Schematic plan view showing a conventional driving device [Description of symbols]
ES ... Escalator ST ... Step GS1, GS2 ... Parallel shaft gear sets 2, 24, 42, 62, 112 ... Motor 4, 26, 44, 64, 114 ... Reducer 6 ... Chain 8, 10 ... Sprocket 12 ... Step chain 14, 20, 40, 60, 100 ... drive device 16 ... belt 28, 50 ... coupling 30, 46, 144 ... flywheel 32, 48, 145 ... brake 66 ... drive shaft 68 ... handrail drive shaft 112A ... motor shaft (input shaft) )
116: gear boxes 116A, 116B ... upper and lower gear boxes 118 ... intermediate shaft 120 ... output shafts 122, 123, 124, 125, 126, 142, 143 ... bearings 130, 134, 146 ... helical pinions 132, 136 ... helical gears 138 ... Drive sprocket 140 ... Flywheel shaft

Claims (9)

Apart from the rotational axis of the power transmission unit for transmitting power to the rotary transport unit, comprises a flywheel shaft flywheel is installed, further, a gearbox for receiving and supporting at least a portion of the rotary shaft and flywheel shaft provided Rutotomoni, the flywheel shaft, provided with a gear wheel which is rotationally driven by any gear provided on the rotary shaft,
A drive device for a rotary transporter , wherein power can be branched to the rotary shaft and the flywheel shaft within the gear box by any gear provided on the rotary shaft . In claim 1,
The flywheel is mounted on the flywheel shaft, while arranged above the drive sprocket provided on an output shaft of the power transmission unit, the flywheel side end surface of the gear box which supports the flywheel shaft, the rotating, characterized in that than the drive sprocket-side end surface of the gear box which supports the output shaft is positioned inward the gearbox to form a space portion accommodating at least a portion of the flywheel space portion Transport equipment drive. In claim 1 or 2,
A drive device for a rotary transporter, further comprising a brake, wherein the brake and the flywheel are arranged on both sides of the flywheel shaft. In claim 3,
A drive device for a rotary transporter, further comprising a motor, wherein the motor is disposed below the brake. In claim 4,
A drive device for a rotary transporter, wherein the motor shaft of the motor and the output shaft of the power transmission unit are coaxially disposed, and the flywheel shaft is disposed above the output shaft. An input shaft having a first gear;
An intermediate shaft disposed in parallel with the input shaft and having a second gear meshing with the first gear of the input shaft, and a third gear;
An output shaft having a fourth gear disposed parallel to the intermediate shaft and meshing with the third gear of the intermediate shaft; and a drive sprocket;
A drive device for a rotary transporter, comprising: a flywheel shaft that is arranged in parallel with the intermediate shaft and has a fifth gear that meshes with the second gear of the intermediate shaft; and a flywheel. In claim 6,
A rotary transport machine characterized in that the flywheel of the flywheel shaft is disposed above the drive sprocket of the output shaft, and the flywheel is disposed axially inward of the drive sprocket. Drive device. In claim 6 or 7,
Furthermore, the flywheel shaft has a brake, and the brake and the flywheel are arranged on both sides of the flywheel shaft. In any one of Claims 6-8,
The drive device for a rotary transport machine, wherein the input shaft, the intermediate shaft, and the flywheel shaft are arranged on the same plane.

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