JP6946242B2 - Passenger conveyor device - Google Patents

Description

The present invention relates to a passenger conveyor device, and more particularly to a belt machine that transmits power from a motor to a speed reducer via a drive belt or a drive chain.

In a belt machine, a motor and a speed reducer are connected by a drive belt, a drive chain, or the like, and the rotation of the rotation shaft of the motor is transmitted to the speed reducer shaft. As an arrangement of the motor and the speed reducer, for example, Patent Document 1 discloses a configuration in which the rotation shaft of the motor is on the same side as the input shaft of the speed reducer and the motor is arranged on the upper part of the speed reducer. Further, Patent Document 2 discloses a configuration in which the rotation shaft of the motor is on the same side as the input shaft of the speed reducer, and the motor and the speed reducer are arranged side by side along the longitudinal direction of the passenger conveyor.

JP-A-2017-105607 Japanese Unexamined Patent Publication No. 2010-159128

The dimensions of the passenger conveyor device must match the dimensions of the customer building, and there are also size restrictions on the machine room in which the drive unit consisting of the motor and reduction gear is arranged. Therefore, it is desirable that the total volume of the drive device is reduced as much as possible, and that the motor and the speed reducer in the drive device are arranged so that the space in the machine room can be effectively used.

The present invention has been made in view of the above circumstances, and in the passenger conveyor device, the total volume of the drive device is reduced, and the arrangement of each device in the drive device that can effectively utilize the space of the machine room is arranged. The purpose is to realize it.

The present invention includes a frame body erected between one floor and the other floor, a plurality of steps housed in the frame body, connected in an endless manner, and cyclically moving between entrances and exits, and the frame body. In a passenger conveyor device including a drive device housed in a motor and a speed reducer to drive the step, the drive device extends in the width direction of the frame and is rotatably arranged. The counter shaft, the pulley attached to the rotating shaft of the motor, the first belt wound around the first pulley provided at one end of the counter shaft, the input sprocket attached to the input shaft of the speed reducer, and the counter shaft. comprising a second belt that is wound around the second pulley provided at the other end, wherein the motor is disposed in the reduction gear on the same plane, said counter shaft is disposed above the reduction gear Rukoto It is characterized by.

According to the passenger conveyor device of the present invention, it is possible to reduce the total volume of the drive device and to arrange each device in the drive device so that the space in the machine room can be effectively used. Issues, configurations, and effects other than those described above will be clarified by the following description of the embodiments.

It is a schematic block diagram of the passenger conveyor device of embodiment of this invention. (A) and (b) are a top view and a side view of the drive device according to the embodiment of the present invention, respectively. (A) and (b) are explanatory views for explaining the relationship of the circumference length of the pulley, the first pulley, the second pulley and the input sprocket according to the embodiment of the present invention. (A) and (b) are explanatory views for explaining the support structure of the counter shaft of the embodiment of this invention. (A) and (b) are explanatory views for explaining the effect by embodiment of this invention.

Hereinafter, a mode for carrying out the passenger conveyor device of the present invention will be described with reference to the drawings. The passenger conveyor device of the present embodiment is an escalator erected between different floors of a building structure, or a moving walkway erected between one floor and the other floor on a horizontal or gentle slope. Etc. are included. In the following, an escalator will be described as an example.

FIG. 1 is a schematic configuration diagram of a passenger conveyor device of the present embodiment. The escalator 1, which is a form of a passenger conveyor device, includes a frame body 2, a plurality of steps 4, a machine room 5, a drive device 6, a pair of left and right balustrades 7, an endless handrail 8, and a control device. 9, a drive chain 10, and a terminal gear 11 are provided.

The frame 2 is installed in a building structure and is erected between one floor and the other floor. Further, the frame body 2 includes an upper horizontal frame 2A, a lower horizontal frame 2B, and an intermediate inclined portion frame 2C. The machine room 5 is provided in the upper horizontal frame 2A.

The plurality of steps 4 are housed in the frame body 2, are connected in an endless manner, and circulate and move between the upper entrance / exit 3A and the lower entrance / exit 3B.

The drive device 6 is provided in the machine room 5 and drives step 4. The details of the drive device 6 will be described later.

The pair of left and right balustrades 7 are erected on the frame 2 along the moving direction of step 4. Further, the handrail 8 is guided to the peripheral edge of the balustrade 7 and driven in synchronization with step 4.

The terminal gear 11 is driven by the drive device 6 via the drive chain 10.

The control device 9 is installed in the machine room 5 and controls the drive device 6.

In FIG. 1, the traveling direction of step 4 is indicated by X, the width direction of the frame body 2 is indicated by Y, and the vertical direction is indicated by Z. Hereinafter, in the present specification, the Y-axis direction is referred to as a width direction, and the X-axis direction is referred to as a longitudinal direction.

When the drive device 6 is driven by the control of the control device 9, the output of the drive device 6 is transmitted to the step 4 and the handrail 8 via the drive chain 10 and the terminal gear 11, and the step 4 and the handrail 8 move up or down. Move in the direction. Step 4 moves in synchronization with the handrail 8 and transports passengers from the upper entrance / exit 3A to the lower entrance / exit 3B during the descending operation, and conveys passengers from the lower entrance / exit 3B to the upper entrance / exit 3A during the ascending operation. do.

Next, the drive device 6 of this embodiment will be described. FIG. 2A is a top view of the drive device 6 of the present embodiment. Further, FIG. 2B is a side view of the drive device 6 of the present embodiment.

The drive device 6 includes a motor 20, a speed reducer 21, a counter shaft 22, a first belt 23, and a second belt 24.

The speed reducer 21 reduces the rotational speed of the motor 20 and has an input shaft 27 and an output shaft 28. An input sprocket 29 is attached to the input shaft 27, and a drive sprocket 30 is attached to the output shaft 28. Further, the terminal gear 11 is arranged in the vicinity of the drive sprocket 30. The drive chain 10 is wound around the drive sprocket 30 and the terminal gear 11. The driving force of the speed reducer 21 is transmitted to the terminal gear 11 via the drive chain 10.

Further, a pair of rails 33 are provided on the upper surface of the speed reducer 21.

The motor 20 is arranged on the side of the speed reducer 21 in the width direction. In this embodiment, it is arranged on the same plane as the speed reducer 21. Further, in the present embodiment, the speed reducer 21 is arranged on the side opposite to the input sprocket 29 in the width direction. At this time, the rotating shaft 25 of the motor 20 is directed toward the speed reducer 21 side. A pulley 26 is attached to the rotating shaft 25. Hereinafter, in the present specification, the pulley also includes a rotary gear (gear).

The counter shaft 22 straddles the speed reducer 21 in the width direction and is rotatably arranged. In other words, the counter shaft 22 is arranged above the speed reducer 21 so as to extend in a direction parallel to the input shaft 27 and the output shaft 28 of the speed reducer 21. A first pulley 31 is attached to one end of the counter shaft 22, and a second pulley 32 is attached to the other end. The diameter of the counter shaft 22 is smaller than the diameter of the motor 20.

The counter shaft 22 is supported by a rail 33 provided on the speed reducer 21, and is provided so as to be slidable with respect to the speed reducer 21 in the longitudinal direction.

The first belt 23 is wound around a pulley 26 of the motor 20 and a first pulley 31 provided at one end of the counter shaft 22, and transmits the rotation of the motor 20 to the counter shaft 22.

The second belt 24 is wound around the input sprocket 29 of the second pulley 32 and the speed reducer 21 provided at the other end of the counter shaft 22, and transmits the rotation of the counter shaft 22 to the speed reducer 21.

Here, the magnitude relationship of the circumferential lengths of the pulley 26, the input sprocket 29, the first pulley 31 and the second pulley 32 will be described. As shown in FIG. 3A, the circumference length L26 of the pulley 26 is smaller than the circumference length L31 of the first pulley 31, and the circumference length L31 of the first pulley 31 is the first. The circumference length L32 of the second pulley 32 is set to be smaller than the circumference length L29 of the input sprocket 29, which is substantially the same as or larger than the circumference length L32 of the two pulleys 32.

That is, these circumferential lengths have a relationship of L26 <L31, L32 ≦ L31, and L32 <L29. However, the diameters of the first pulley 31 and the second pulley 32 are smaller than the size of the motor 20 in the height direction.

When the motor 20 rotates under the control of the control device 9, the rotational force is transmitted to the counter shaft 22 via the pulley 26, the first belt 23, and the first pulley 31, and the counter shaft 22 rotates. When the counter shaft 22 rotates, the rotational force is transmitted to the reduction gear 21 via the second pulley 32, the second belt 24, and the input sprocket 29, and the reduction gear 21 reduces the rotational speed of the motor 20 while reducing the rotation speed of the motor 20 and the output shaft. 28 and the drive sprocket 30 are driven. The driving force from the speed reducer 21 is transmitted to the terminal gear 11 via the drive chain 10 and moves in the ascending or descending direction in step 4 and the handrail 8.

At this time, since the circumferential lengths of the pulley 26, the input sprocket 29, the first pulley 31 and the second pulley 32 have the above magnitude relationship, the rotational speed of the motor 20 is reduced in two steps. As a result, the rotation speed of the motor 20 can be increased. Therefore, the motor 20 having a smaller capacity can be selected, and the size of the motor 20 can be reduced accordingly.

Next, an example of the support structure of the counter shaft 22 will be described. FIG. 4A shows an example of the support structure of the counter shaft 22. The counter shaft 22 is housed in the shaft holder 41. Then, as shown in FIG. 4B, after sliding and positioning on the rail 33, the shaft holder 41 is fixed by pressing the set screw 42 onto the rail 33.

The support of the counter shaft 22 is not limited to the above configuration. Any configuration may be used as long as the arrangement position in the longitudinal direction can be adjusted. For example, instead of using the rail 33, a long hole having an elongated shape in the longitudinal direction is formed on the upper surface of the speed reducer 21, and a bolt or the like is passed through the bolt hole provided in the shaft holder 41 and the long hole thereof to make the shaft holder. It may be configured to fix 41. In this case, loosen the bolt, move the shaft holder 41 in the longitudinal direction within the range of the elongated hole, position it, and then tighten the bolt to fix the shaft holder 41.

Here, the tension adjustment procedure of the first belt 23 and the second belt 24 at the time of installation and maintenance will be described. The tension of the first belt 23 and the second belt 24 is performed after adjusting the tension of the drive chain 10 wound around the drive sprocket 30 and determining the arrangement of the speed reducer 21.

First, the counter shaft 22 is moved to adjust the tension of the second belt 24. The counter shaft 22 is moved to a position where the tension of the second belt 24 is optimum, the counter shaft 22 is fixed, and then the motor 20 is moved to adjust the tension of the first belt 23.

As described above, according to the present embodiment, the frame body 2 erected between one floor and the other floor and the frame body 2 are housed in the frame body 2 and are connected in an endless manner to the entrance (upper part). A plurality of steps 4 that circulate and move between the entrance / exit 3A and the lower entrance / exit 3B), and a drive device 6 that is housed in the frame 2 and has a motor 20 and a speed reducer 21 to drive the step 4. In the passenger conveyor device (escalator 1) provided, the drive device 6 extends in the width direction of the frame body 2 and is rotatably arranged with a counter shaft 22 and a pulley attached to a rotary shaft 25 of the motor 20. 26, a first belt 23 wound around a first pulley 31 provided at one end of the counter shaft 22, an input sprocket 29 attached to an input shaft 27 of the speed reducer 21, and the other end of the counter shaft 22. A second belt 24 wound around the second pulley 32 is provided, and the motor 20 is arranged on the same plane as the speed reducer 21.

As described above, according to the present embodiment, the pulley 26 attached to the rotating shaft 25 of the motor 20 and the input sprocket 29 attached to the input shaft 27 of the speed reducer 21 straddle the speed reducer 21 in the width direction (reducer). It is connected via a second belt 24 and a first belt 23 wound around pulleys at both ends of the counter shaft 22 (extending in the width direction above 21), respectively.

Therefore, the motor 20 can be arranged on the side of the speed reducer 21 in the width direction and on the side opposite to the input shaft 27 of the speed reducer 21. Therefore, the empty space in the width direction in the machine room 5 can be effectively utilized. Further, the depth dimension of the drive device 6 can be reduced as compared with the configuration in which the motor 20 and the speed reducer 21 are arranged side by side in the longitudinal direction.

Further, as described above, the counter shaft 22, the first pulley 31, and the second pulley 32 are set to have smaller height dimensions than the motor 20. Therefore, as shown in FIGS. 5A and 5B, the height dimension of the drive device 6 can be reduced by ΔL as compared with the conventional configuration in which the motor 20 is arranged above the speed reducer 21.

Further, the pulley 26 of the motor 20 and the input sprocket 29 of the speed reducer are connected by two belts via the pulleys (first pulley 31 and second pulley 32) at both ends of the counter shaft 22. The circumferences of the pulley 26, the first pulley 31, the second pulley 32, and the input sprocket 29 are set so that the respective lengths have the above-mentioned relationship.

Therefore, according to the present embodiment, the rotation speed of the motor 20 can be reduced in two steps. Therefore, the rotation speed of the motor 20 can be increased, and the required torque can be obtained even if the capacity of the motor 20 is reduced. Therefore, the size of the entire drive device 6 including the motor 20 can be reduced.

Further, according to the present embodiment, the above-mentioned arrangement of the motor 20 with respect to the speed reducer 21 and the two-step deceleration are realized by the counter shaft 22 bridged so as to straddle the speed reducer 21 in the width direction. Therefore, it is not necessary to make major changes to the structure of the speed reducer 21 main body.

Further, since the counter shaft 22 is slidably supported in the longitudinal direction, the tensions of the second belt 24 and the first belt 23 can be easily adjusted as described above.

In the above embodiment, the motor 20 is arranged on the side of the speed reducer 21 in the width direction, but the arrangement position of the motor 20 is not limited to this. For example, it may be arranged laterally in the longitudinal direction of the speed reducer 21. By arranging in this way, the height dimension of the drive device 6 can be reduced as compared with the configuration in which the motor 20 is arranged above the speed reducer 21.

Further, according to the present embodiment, the deceleration can be performed in two steps, so that the capacity of the motor 20 itself can be reduced. Therefore, even when the motor 20 is similarly arranged in the longitudinal direction of the speed reducer 21, the input sprocket 29 of the speed reducer 21 and the pulley 26 of the motor 20 are connected by one belt, as compared with the configuration in which the motor 20 is connected by one belt. In obtaining the same torque, a motor 20 having a small capacity can be used. Therefore, as described above, the size of the drive device 6 can be reduced.

As described above, according to the present embodiment, the motor 20 and the speed reducer 21 are connected via the counter shaft 22 straddling the speed reducer 21 and the two belts. That is, in the present embodiment, the rotating shaft 25 of the motor 20 and the input shaft 27 of the speed reducer 21 may be arranged on opposite sides of the speed reducer 21 in the width direction. Therefore, the degree of freedom in the arrangement position of the motor 20 and the speed reducer 21 is improved while realizing the two-step deceleration. Therefore, the smaller motor 20 can be used, and the motor 20 and the speed reducer 21 can be arranged with a high degree of freedom according to the dimensions of the customer's building while reducing the total volume of the drive device 6.

Further, in the above embodiment, the case where the counter shaft 22 is bridged above the speed reducer 21 has been described as an example, but the counter shaft 22 is limited to a configuration that straddles the speed reducer 21 above the speed reducer 21. Not done. For example, the counter shaft 22 may be arranged below the speed reducer 21 so as to straddle the speed reducer 21, that is, below the speed reducer 21 so as to extend in the width direction.

Further, in the above embodiment, the motor 20 is arranged on the same plane as the speed reducer 21, but the motor 20 is not limited to this. Depending on the size of both devices, for example, a pedestal or the like may be provided, and one of the devices may be arranged on the pedestal or the like.

Further, the circumference length L26 of the pulley 26, the circumference length L31 of the first pulley 31, the circumference length L32 of the second pulley 32, and the circumference length L29 of the input sprocket 29 are related to the magnitude of the above embodiment. May further have the following limitations: That is, as shown in FIG. 3A, the circumference length L29 of the input sprocket 29 is larger than the circumference length L26 of the pulley 26, and the circumference length L31 of the first pulley 31 and the circumference of the second pulley 32. The length L32 is larger than the circumference L26 of the pulley 26 and smaller than the circumference L29 of the input sprocket 29.

However, even in this case, it is desirable that the circumference length L31 of the first pulley 31 is equal to or larger than the circumference length L32 of the second pulley 32.

Further, as shown in FIG. 3B, it is more desirable that the circumference length L31 of the first pulley 31 is substantially the same as the circumference length L32 of the second pulley 32. By being the same, as shown in FIG. 5B described above, the maximum height protruding above the speed reducer 21 is the circumference length L31 of the first pulley 31 or the circumference length of the second pulley 32. The larger the diameter determined by L32, the higher the diameter. Therefore, by making the size the same, the maximum value in the height direction can be minimized.

In the above, the embodiment of the passenger conveyor device of the present invention and its modification have been described including its operation and effect. However, the passenger conveyor device of the present invention is not limited to the above-described embodiments and modifications, and various modifications can be made without departing from the gist of the invention described in the claims.

1: Escalator, 2: Frame, 2A: Upper horizontal frame, 2B: Lower horizontal frame, 2C: Intermediate inclined part frame, 3A: Upper entrance / exit, 3B: Lower entrance / exit, 4: Step, 5: Machine room, 6 : Drive device, 7: Sprocket, 8: Handrail, 9: Control device, 10: Drive chain, 11: Terminal gear, 20: Motor, 21: Reducer, 22: Counter shaft, 23: First belt, 24: Second belt, 25: Rotating shaft, 26: Pulley, 27: Input shaft, 28: Output shaft, 29: Input sprocket, 30: Drive sprocket, 31: First pulley, 32: Second pulley, 33: Rail, 41 : Shaft holder, 42: Set screw

Claims (6)

A frame body erected between one floor and the other floor, a plurality of steps housed in the frame body, connected in an endless manner to circulate between entrances and exits, and housed in the frame body. In a passenger conveyor device including a drive device having a motor and a speed reducer to drive the step.
The drive device
A counter shaft that extends in the width direction of the frame and is rotatably arranged,
A pulley attached to the rotating shaft of the motor, a first belt wound around a first pulley provided at one end of the counter shaft, and a belt.
The input sprocket attached to the input shaft of the speed reducer and the second belt wound around the second pulley provided at the other end of the counter shaft are provided.
The motor is arranged on the same plane as the speed reducer .
It said counter shaft, a passenger conveyor according to claim Rukoto disposed above the reduction gear. The passenger conveyor device according to claim 1.
A passenger conveyor device characterized in that the motor is arranged on the side of the speed reducer in the width direction. The passenger conveyor device according to claim 1.
The circumference of the input sprocket is longer than the circumference of the pulley.
A passenger conveyor device characterized in that the circumferences of the first pulley and the second pulley are longer than the circumference of the pulley and shorter than the circumference of the input sprocket. The passenger conveyor device according to claim 3.
A passenger conveyor device characterized in that the circumference of the first pulley is equal to or greater than the circumference of the second pulley. The passenger conveyor device according to claim 3.
A passenger conveyor device characterized in that the circumference of the first pulley and the circumference of the second pulley are the same. The passenger conveyor device according to claim 1.
A passenger conveyor device characterized in that the counter shaft is slidably supported by the speed reducer along the longitudinal direction of the frame body.

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