JP2017001826A - Passenger conveyor - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a passenger conveyor drive device that can miniaturize a machine room in a truss.SOLUTION: The passenger conveyor drive device 18 includes: the machine room 14 provided at one end inside the truss; a motor 20 and a decelerating planetary gear box 68 arranged on the same axial line between a pair of right and left main drive sprockets 24, 24 inside the machine room 14; the pair of right and left main drive sprockets 24, 24 mounted to an output shaft 689 of the decelerating planetary gear box 68. The motor 20 is disposed coaxially with the main drive sprockets 24, 24, thereby miniaturizing the machine room.SELECTED DRAWING: Figure 2

Description

  Embodiments of the present invention relate to passenger conveyors.

  Conventionally, in passenger conveyors such as escalators and moving walkways, a driving device that drives the steps and the handrail belt is installed in the machine room provided at one end of the truss, and this driving device causes the main drive sprocket and the handrail to be driven. The drive sprocket is rotated to run the step and the handrail belt synchronously.

JP-A-8-259161

  Recently, in order to increase the safety of passenger conveyors against earthquakes, the law on the installation of passenger conveyors (Building Standard Act enforcement order) has been amended. The point of this revision is that when a truss is installed in the building, the gap between the truss and the building is made larger than before, and even if there is a shake due to an earthquake, the movement due to the shake is absorbed by this gap. .

  However, the conventional passenger conveyor has only a few gaps between the building and the truss, and in order to comply with this law, there is a problem that it is necessary to make the machine room small.

  Then, in view of the said problem, embodiment of this invention aims at providing the passenger conveyor which can make a machine room small.

  An embodiment of the present invention includes a truss that is supported by a building at a support angle, a machine room provided at one end of the truss, and is arranged along the longitudinal direction in the truss and connected endlessly. A plurality of steps, a pair of left and right main drive sprockets disposed in the machine room for driving the steps, a motor disposed between the pair of left and right main drive sprockets, and the pair of left and right main drives Between the sprocket, and the input shaft is connected to the motor shaft of the motor and rotates one of the main drive sprockets, and between the one main drive sprocket and the other main drive sprocket And a torque transmission member provided on the passenger conveyor.

The side view of the escalator which shows one Embodiment of this invention. The longitudinal cross-sectional view which looked at the machine room from the front. The cross-sectional view which looked at the machine room from the upper surface. AA line sectional view in FIG.

  Hereinafter, the escalator 10 of one Embodiment of this invention is demonstrated based on FIGS. 1-4.

(1) Escalator 10
The structure of the escalator 10 is demonstrated based on FIG. 1 and FIG. A truss 12 that is a framework of the escalator 10 is supported using support angles 2 and 3 across the upper and lower floors of the building 1.

  A driving device 18 including a motor 20 for running the steps 30 is provided in the upper floor side machine room 14 at the upper end of the truss 12. The drive device 18 will be described later. The drive device 18 rotates the pair of left and right main drive sprockets 24 and 24 and the pair of left and right handrail belt sprockets 22 and 22. In addition, a control device 50 that controls the motor 20 is provided at one end of the machine room 14 on the upper floor side.

  A pair of left and right driven sprockets 26 are provided in the lower floor side machine room 16 at the lower end of the truss 12. Between the pair of left and right main drive sprockets 24, 24 on the upper floor side and the pair of left and right driven sprockets 26, 26, a pair of left and right endless step chains 28, 28 are suspended. A plurality of steps 30 are attached to the pair of left and right step chains 28, 28 at equal intervals. When the motor 20 rotates, the front wheel 301 of the step 30 travels on a guide rail 25 fixed to the truss 12, and the rear wheel 302 travels on a guide rail (not shown) fixed to the truss 12.

  On the left and right sides of the truss 12, a pair of left and right balustrades 36, 36 are erected. A handrail rail 39 is provided above the balustrade 36, and an endless handrail belt 38 moves along the handrail rail 39. A front skirt guard 40 on the upper floor side is provided in the lower front part on the upper floor side of the balustrade 36, and a front skirt guard 42 on the lower floor side is provided in the lower front part on the lower floor side. Inlet portions 46 and 48, which are entrances and exits of the handrail belt 38, protrude from each other.

  A skirt guard 44 is provided at the lower side of the balustrade 36, and the step 30 travels between the pair of left and right skirt guards 44, 44. Operation panels 52 and 56 and speakers 54 and 58 are provided on the inner side surfaces of the skirt guards 44 on the upper and lower floors, respectively.

  The handrail belt 38 enters the front skirt guard 40 from the inlet 46 on the upper floor side, is passed over the handrail belt sprocket 22 via the guide roller 64, and then the skirt guard 44 via the guide roller 66. It moves in and appears outside the front skirt guard 42 from the inlet 46 on the lower floor side. The handrail belt 38 moves in synchronization with the step 30 as the handrail belt sprocket 22 rotates together with the main drive sprocket 24.

  An entrance / exit of a pair of left and right skirt guards 44, 44 on the upper floor side, and the upper floor side entrance / exit plate 32 is horizontally provided on the ceiling surface of the machine room 14. The lower floor side entrance / exit board 34 is provided on the ceiling surface of the machine room 16 and is provided horizontally. A comb-like comb 60 is provided at the front end of the upper floor board 32, and the step 30 enters the comb 60. A comb-like comb 62 is also provided at the tip of the lower floor board 34.

(2) Drive device 18
Next, the drive device 18 will be described with reference to FIGS. As shown in FIGS. 2 and 3, the drive unit 18 is arranged between a pair of left and right main drive sprockets 24, 24. 68 ”, a cylindrical fixing member 70, and a torque transmission member 72. The step 30 connected endlessly is turned upside down by a pair of left and right main drive sprockets 24, 24, but is turned around the drive device 18.

  An input shaft 686 of the box 68 is connected to the motor shaft 74 (output side) of the motor 20 via a coupling 76. A fan 78 for cooling the motor 20 and the box 68 is attached to the non-output side of the motor 20, and the power line 80 of the fan 78 and the motor 20 extends from the non-output side.

  The cylindrical fixing member 70 houses the motor 20, the box 68, and the fan 78 on the same axis, and the left end inner peripheral portion of the fixing member 70 and the outer peripheral portion of the box 68 are fixed. The center of the right side portion of the cylindrical fixing member 70 is fixed to the vertical frame member 122 on the right side surface of the truss 12 via the support member 86 so as not to rotate.

  A support member 86 that supports the right side portion of the fixing member 70 is rotatably attached to the right main drive sprocket 24 via a bearing 88. Further, a through hole 90 is provided inside the support member 86, and a power line 80 extending from the motor 20 is drawn out of the driving device 18 through the through hole 90 and connected to the control device 50, a power source, and the like.

  The box 68 is a planetary planetary gear box. As shown in FIG. 4, the sun gear 681 fixed to the input shaft 686, the internal gear 682 whose rotation is fixed, and the internal gear 682 are rotated by the rotation of the sun gear 681. The planetary gears 683 and 684 rotate while revolving around the circumference, and the rotation shaft 687 of the two planetary gears 683 and the planetary carrier 685 that rotatably fixes the rotation shaft 688 of the planetary gear 684. When the rotation of the motor 20 is transmitted to the sun gear 681, the planetary gear 683 and the planetary gear 684 revolve around the inner periphery of the internal gear 682 by rotating while the positions thereof are fixed by the planet carrier 685. An output shaft 689 provided at the center of the planetary carrier 685 is decelerated from the input shaft 686 of the sun gear 681 and rotates. The reduction ratio Y is determined from the number of teeth ZA of the sun gear 681 and the number of teeth ZC of the internal gear 682, and is the reduction ratio Y = (ZC / ZA) +1. The output shaft 689 of the box 70 is fixed to the vertical frame member 121 on the left side surface of the truss 12 via a bearing 84 so as to be rotatable.

  The left main drive sprocket 24 is fixed coaxially with the output shaft 689 of the box 70 and rotates with the rotation of the output shaft 689. A ring-shaped ratchet wheel 82 is provided on the left side of the left main drive sprocket 24.

  A cylindrical torque transmission member 72 is provided between the left main drive sprocket 24 and the right main drive sprocket 24. When the left main drive sprocket 24 rotates, the right main drive sprocket 24 also rotates simultaneously by the torque transmission member 72. The torque transmission member 72 is provided with a handrail pulley 92, and the handrail pulley 92 and the handrail belt sprocket 22 are connected by a connection belt (not shown).

(3) Operation State of Drive Device 18 Next, the operation state of the drive device 18 will be described.

  When the motor 20 is rotated, the output shaft 689 is decelerated and rotated by the connected box 68, and the left main drive sprocket 24, the torque transmission member 72, and the right main drive sprocket 24 are rotated. As the pair of left and right main drive sprockets 24, 24 rotate, the step 30 travels in a certain direction. In addition, the handrail pulley 92 also rotates, the handrail belt sprocket 22 rotates, and the handrail belt 38 moves in synchronization with the step 30.

  The fan 78 operates in conjunction with the operation of the motor 20 and air-cools the box 68 and the motor 20.

(4) Effect In the escalator 10 of the above embodiment, the drive device 18 is disposed between the pair of left and right main drive sprockets 24 and 24, and the longitudinal dimension of the machine room 14 can be reduced. 1 can be increased (see FIG. 1).

  Further, since the motor 20, the box 68, and the fan 78 are accommodated in the cylindrical fixing member 70 and the cylindrical torque transmission member 72, noise from the motor 20 and the like can be reduced.

  Further, since the power supply line 80 is drawn to the outside through the through hole 90 of the support member 81, the movement of the step 30 is not disturbed.

  Further, since there is no need to connect the main drive sprockets 24, 24 and the motor 20 with a drive chain as in the prior art, the transmission efficiency is increased by 1 to 10%. Furthermore, since this drive chain is abolished, maintenance work such as refueling management in this part becomes unnecessary.

(5) Modification Example In the above embodiment, the fixing member 70 and the torque transmission member 72 are cylindrical and all of the peripheral surface is covered with a wall. Instead, a plurality of metal bars are provided at predetermined intervals. When the cage-shaped cylindrical fixing member 70 and the torque transmission member 72 are provided, maintenance and inspection can be performed from the space between the metal bars.

  Although the box 68 is a planetary type, it may be of other structures. If the target reduction ratio cannot be achieved with a single box 68, the boxes 68 are connected in series in a plurality of stages until the target reduction ratio is reached. It may be lowered.

  Moreover, in the said embodiment, although the planetary gear box 68 for reduction was used as a reduction gear, it may replace with this and may use another reduction gear. For example, parallel shaft gear reducers, worm reducers, bevel gear reducers, helical reducers, hypoid reducers are used.

  In the above embodiment, the speed reducer is used as the transmission unit, but other transmission units may be used instead. For example, when the speed reduction of the motor 20 is not required, the rotation shaft of the main drive sprocket 24 may be connected to the motor shaft via a coupling member. In this case, the coupling member becomes the transmission means.

  Further, in the above embodiment, the description has been made by adapting to the step 30 of the escalator 10, but instead of this, it may be adapted to a step (step) of a moving sidewalk.

  Although one embodiment of the present invention has been described above, this embodiment is presented as an example and is not intended to limit the scope of the invention. These novel embodiments can be implemented in various other forms, and various omissions, replacements, and changes can be made without departing from the spirit of the invention. These embodiments and modifications thereof are included in the scope and gist of the invention, and are included in the invention described in the claims and the equivalents thereof.

DESCRIPTION OF SYMBOLS 10 ... Escalator, 12 ... Truss, 30 ... Step, 68 ... Deceleration planetary gear box, 70 ... Fixed member, 72 ... Torque transmission member, 74 ... Motor output Shaft, 80 ... power line, 86 ... support member

An embodiment of the present invention includes a truss that is supported by a building at a support angle, a machine room provided at one end of the truss, and is arranged along the longitudinal direction in the truss and connected endlessly. A plurality of steps, a pair of left and right main drive sprockets disposed in the machine room for driving the steps, a motor disposed between the pair of left and right main drive sprockets, and the pair of left and right main drives arranged between the sprockets, and the input shaft is coupled to a motor shaft of the motor, between the reduction gear for rotating one of the main drive sprocket and one of the main drive sprocket and the other of the main drive sprocket possess a torque transmission member provided, to the torque transmitting member is the cage, the motor and the reduction gear on the inside of the torque transmission member is housed, that Is a passenger conveyor which is characterized.

Claims (10)

A truss supported by a support angle in the building,
A machine room provided at one end of the truss;
A plurality of steps arranged along the longitudinal direction in the truss and connected endlessly,
A pair of left and right main drive sprockets arranged in the machine room for driving the steps;
A motor disposed between a pair of left and right main drive sprockets;
A transmission means arranged between the pair of left and right main drive sprockets, and an input shaft connected to a motor shaft of the motor, and rotating one of the main drive sprockets;
A torque transmission member provided between one main drive sprocket and the other main drive sprocket;
Passenger conveyor characterized by having. The transmission means is a reducer;
The passenger conveyor according to claim 1. The speed reducer is a planetary gear box;
An output shaft of the planetary gear box is fixed to one of the main drive sprockets,
The passenger conveyor according to claim 2. The torque transmission member is cylindrical or cage-shaped;
The motor and the reduction planetary gear box are housed in the inner periphery of the torque transmission member.
The passenger conveyor according to claim 3. The motor shaft of the motor, the output shaft of the planetary gear box for reduction, and the torque transmission member are arranged on the same axis.
The passenger conveyor according to claim 4. The output shaft of the reduction planetary gear box is provided on a frame member on one side of the truss via a bearing,
The passenger conveyor according to claim 5. A cylindrical or cage-shaped fixing member is arranged on the inner periphery of the torque transmission member,
The motor and the reduction planetary gear box are housed on the inner periphery of the fixing member, and are fixed to one end of the inner periphery of the fixing member.
The passenger conveyor according to claim 6. The other end of the fixing member is fixed to a frame member on the other side of the truss using a supporting member, and the other main drive sprocket is rotatably provided on the supporting member via a bearing. Yes,
The passenger conveyor according to claim 7. A power line of the motor is drawn to the outside through the support member;
The passenger conveyor according to claim 8. The machine room is provided with a pair of left and right handrail belt sprockets,
A handrail pulley is provided on the outer periphery of the torque transmission member,
The handrail belt sprocket and the handrail pulley are connected by a connecting belt,
The passenger conveyor according to claim 1.

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