JP2000229774A - Variable speed passenger conveyor and operating method thereof - Google Patents

Abstract

(57) [Summary] [PROBLEMS] To provide a variable-speed passenger conveyor that does not damage a tread or the like. SOLUTION: In a variable-speed passenger conveyor in which a diamond-shaped link changes due to a change in a guide rail interval to change an interval between treads, a main driving device 1 of a tread 50 provided in a constant speed region in a middle portion of a transport line. And an auxiliary driving device 9 provided below the portion where the tread plate 50 of the return line rises and reverses. The auxiliary driving device 9 is a driving chain 11 that is wound around the individual sprocket wheels 10a and 10b.
And a motor 12 for driving the drive chain 11. A variable-speed passenger conveyor in which a coupling device for transmitting power by friction of a friction plate is provided on a rotating shaft of the motor 12.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a variable-speed passenger conveyor in which a feed speed of a tread plate changes between an entrance and an exit on a moving sidewalk or an escalator or the like, and a method of operating the same.

[0002]

2. Description of the Related Art Recently, many passenger conveyors for transporting passengers without walking have been installed in airports, train stations, tourist facilities, and the like.

[0003] Among the passenger conveyors, in the variable-speed passenger conveyor, the feeding speed of the tread is set to about 30 to 40 m / min at the entrance and exit in consideration of passenger safety. In other intermediate parts, the feed speed is set higher than that to achieve efficient operation. Then, the footboard after the passenger has been lowered at the exit has a structure in which a plurality of footboards are connected endlessly so that the footboard is immediately reversed and returns to the entrance side again.

As a prior art of such a variable-speed passenger conveyor, there is a technique (prior art 1) disclosed in Japanese Patent Application Laid-Open No. 58-59981. In a variable-speed passenger conveyor based on this technology, the end of a link formed in an X-shape in the horizontal direction can be shifted by being guided by a guide rail whose width changes.

As another prior art of a variable-speed passenger conveyor, there is a technique (prior art 2) disclosed in JP-A-57-203678. In a variable-speed passenger conveyor based on this technology, one end of a link formed in a V-shape in the height direction has a link rail that changes in the height direction.
The gear can be changed by being guided by the vehicle.

In both of the prior arts 1 and 2, the driving method of the treads employs a method in which each tread is driven by a belt or a chain in a high speed region in which the intermediate tread is fed at a constant high feed speed. However, in the speed change area before and after the high-speed area and in the low-speed area where the tread is fed at a constant low feed speed in order for passengers to get on and off, no tread driving device is provided.

[0007]

However, the conventional variable-speed passenger conveyor described above has the following problems.

FIG. 13 shows the relationship between the forces acting on the tread links at the low speed section and the high speed section of the passenger conveyor when the transport speed of the passenger conveyor is changed by the tread links. A in the figure is a guide roller that runs on a guide rail B (broken line in the figure). The front and rear tread links are connected by C and D in the figure, and force is transmitted. In the figure, F: the traction force transmitted by the front tread link F ': the force transmitted to the rear tread link (the force pulling the rear tread link R, R': The link is formed by the action of F and F '. N: a force (drag) that the guide roller presses against the side wall of the guide rail when R and R 'act on the link, and the direction in which the force acts is perpendicular to the guide rail.

K: R and R 'act on the link,
In addition, since the guide rail is inclined, it is a force that the guide roller tries to travel, and the direction in which the force acts is along the guide rail.

M: The direction of the frictional force and force generated by the action of N described above is along the guide rail.

Γ ₁ : dynamic friction coefficient between guide roller and guide rail γ ₂ : dynamic friction coefficient between tread running wheel and running rail W: total weight of tread main body and link θ: opening angle of tread link μ: guide rail Assuming that the inclination angle is, the relationship as shown in the equations (5) to (7) is established.

M = γ ₁ · N (5) N = R · Cos (θ + μ) + R ′ · Cos (θ + μ) = F · ｛Cos (θ + μ) / 2Cosθ｝ + F ′ · ｛Cos (θ−μ) / 2Cosθ} ...... (6) in addition, the the transport resistance, the sum of the friction force W · gamma ₂ which occurs above M and step boards running wheels is considered. Therefore, the transport resistance ΔF of the tread plate is as follows.

ΔF = 2M + 2W · γ ₂ (7) In general, the opening angle θ is large in the low-speed region because the guide rail interval is large, and small in the high-speed region. Therefore, the drag N and the frictional force M acting on the guide rails are larger as the opening angle θ is larger, that is, are maximum in a low speed region, and the transport resistance of the tread is the largest.

In the driving method according to the prior art described above, since only the intermediate portion is driven, it becomes easy to pull all the treads in the reverse portion to the variable speed region on the entrance side, and further, in the reverse portion, the rear portion of the tread is changed. The force by which the treads try to descend the reversing portion becomes a traction force F ', and a large force is required to pull the treads of the reversing portion. In some cases, the drag acting on the guide rails caused by the large traction force causes damage to the guide rails. There is a risk of damage to the guide rollers.

Therefore, it is necessary to provide not only the intermediate portion but also an auxiliary driving device for pushing up the tread just before the reversing portion, or the tread reversing portion on the side of the entrance where the own weight of the tread acts.

[0016] On the other hand, the conveying speed V _l of the tread at the entrance gate,
The ratio V ₁ / V _h of the transport speed V _h at the intermediate portion is expressed as in equation (8).

V ₁ / V _h = F ₁ / F ₂ (8) where F ₁ is the interval between the treads at the entrance F ₂ ; the interval between the treads at the intermediate portion However, an auxiliary drive device is provided and the auxiliary drive device is provided. When so as to transported at the transportation speed of the obtained V _l at (8), larger conveying resistance in the low-speed portion as described above, there is no force to push up the treadle in the reverse section, function as auxiliary drive Can not do it.

Therefore, the transport speed in the low speed section is
(8) as above transport speed of V _l which is obtained by the formula must be devised to increase the force pushing up the treadle.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems of the prior art, and a guide rod is provided.
An object of the present invention is to provide a variable-speed passenger conveyor in which a large load does not act on the engagement fittings of the rails, the guide rails and the treads, and which does not damage the treads and the like, and an operation method thereof.

[0020]

In a first variable speed passenger conveyor according to the present invention, adjacent treads are connected by diamond-shaped links, and rollers provided at both ends of the links are changed in distance. In the variable-speed passenger conveyor, in which the links arranged in the shape of diamonds change according to the change in the distance between the guide rails to change the distance between the treads, the driving mechanism drives the speed of the intermediate part of the transfer line. A main drive device for a tread provided in a certain area, and an auxiliary drive provided below a portion where the tread of a return line rises and reverses, the auxiliary drive being composed of two sprockets arranged at a constant interval An endless drive chain wrapped around a wheel, hardware arranged at intervals in the drive chain, and an electric motor for driving the drive chain, wherein the hardware is a tread plate. Is engaged with the engagement alloy tool auxiliary drive of step boards is carried out, the rotation shaft of the motor is to the coupling device to transmit power is provided by friction of the friction plate.

The first method of operating a variable-speed passenger conveyor according to the present invention is the first method of operating a variable-speed passenger conveyor, wherein the feed speed of the tread at the portion where the upside-down portion is reversed is the same as described above. Auxiliary drive is performed by setting the rotation speed of the electric motor of the auxiliary drive device so as to be faster than the feed speed sent only by the main drive device, and when a load equal to or more than a certain value acts on the tread plate, the friction plate This prevents excessive power from being transmitted to the sprocket wheel of the auxiliary drive device due to the friction of the vehicle.

In the second variable speed passenger conveyor according to the present invention, adjacent treads are connected to each other by links arranged in a rhombus shape, and rollers provided at both ends of the links are connected by two rollers having variable intervals. In a variable-speed passenger conveyor that runs along a guide rail and the rhombic-shaped links change according to the change in the guide rail interval to change the interval between the treads, the drive mechanism is provided in a constant speed area in the middle of the transport line. A main drive device for the tread plate and an auxiliary drive device provided below a portion where the tread plate of the return line rises and reverses. The auxiliary drive device is composed of two auxiliary drive sprocket wheels arranged at regular intervals. An endless drive chain wound around the wheel, a metal member spaced from the drive chain, and the two auxiliary drive sprockets for driving the drive chain. A power transmission sprocket wheel separately provided on one rotating shaft of the wheel, and a power transmission sprocket wheel separately provided on one rotating shaft of the main driving sprocket wheel constituting the main driving device. And an endless power transmission chain that is hung between the front and rear wheels, the metal fittings are engaged with the fittings of the tread plate to perform auxiliary driving of the tread plate, and an auxiliary drive sprocket of the auxiliary drive device is provided. A coupling device for transmitting power by friction of a friction plate is provided on a common rotary shaft of the wheel and the power transmission sprocket wheel on the auxiliary drive device side.

The second method of operating a variable-speed passenger conveyor according to the present invention is the second method of operating a variable-speed passenger conveyor, wherein the power transmission chain is provided on the main drive side. The number of teeth of the power transmission sprocket wheel on the auxiliary drive device side of the power transmission chain is set to be smaller than the number of teeth of the power transmission sprocket wheel, and the tread plate is fed at the above-mentioned upside-down inverted portion. When the auxiliary drive is performed so that the speed is higher than the feed speed sent only by the main drive device, and when a load equal to or more than a certain value acts on the tread,
In this configuration, unnecessary power is not transmitted to the sprocket wheel of the auxiliary driving device due to friction of the friction plate.

In the operation of the first and second variable-speed passenger conveyors, at least the driving force of the weight of the tread plate and the link member in the reversing section can be applied by the auxiliary driving device. The link tension can be kept low, and at the same time, the power of the main drive unit in the high-speed area is reduced, and the load acting on the link member, the transport roller, and the link roller can be significantly reduced. No need.

Further, the pressing force of the tread plate and the link roller against the rail at the reversing portion is significantly reduced, so that the passage of the link member is facilitated.

Furthermore, the coupling device that transmits power by friction of the friction plate does not transmit more power than necessary to the tread plate, so that the transfer is performed smoothly.

[0027]

Embodiments of the present invention will be described below with reference to the drawings. First, a variable-speed passenger conveyor according to a first embodiment of the present invention will be described.

FIG. 1 is a side view showing a drive system of a variable-speed passenger conveyor according to a first embodiment of the present invention.

In FIG. 1, reference numeral 100 denotes a running rail arranged in a loop on a conveyor line. On the traveling rail 100, treads 50 for transporting passengers are continuously arranged.

In the figure, section A is a transport section for transporting passengers, of which section S1 is a low-speed area where passengers get in,
The section of S2 is an acceleration area, the section of S3 is a high-speed area, the section of S4 is a deceleration area near a passenger exit, the section of S5 is a low-speed area including a passenger exit, and in the section of S6, the tread plate 50 is inverted. It is a low speed area.

In the figure, the section B is a return section, the section S7 is a low-speed area, the section S8 is an acceleration area, the section S9 is a high-speed area, the section S10 is a deceleration area, and the section S11 is an auxiliary drive of the present invention. The low-speed region where the device is installed, the section of S12 is a low-speed region in a reversing section where the tread plate 50 rises and reverses.

This variable-speed passenger conveyor is provided with a main drive unit 1 for applying a driving force to the tread plate 50 in the high-speed areas S3 and S9. The main drive unit 1 includes two chain rocket wheels 2a and 2b provided at an interval, an endless drive chain 3 looped between the two chain rocket wheels 2a and 2b, And a main motor 4 for driving the drive chain 3. 7a and 7b are chain guides for restraining the trajectory of the drive chain 3,
It is provided to stabilize the engagement between the tread plate 50 and the drive chain 3.

The drive chain 3 is driven by the main motor 4, and the driving force of the main motor 4 is controlled by the chain rocket wheel 5a and the chain rocket wheel 2b connected to the rotating shaft of the main motor 4. The power is transmitted by a drive chain 6 wound around a chain sprocket wheel 5b connected to the rotating shaft.

In the present invention, the auxiliary driving device 9 is further provided below the reversing portion S12 on the ascending side of the tread plate 50 in the return section B.
Is provided. The auxiliary driving device 9 includes two chain sprocket wheels 10a, 1a provided at a distance.
0b, and chain sprocket wheels 10a, 10b
Drive chain 11, and drive chain 11
And an auxiliary motor 12 for driving the motor.

The drive chain 11 is driven by an auxiliary motor 12, and the driving force of the auxiliary motor 12 is controlled by a chain rocket wheel 13a connected to the rotating shaft of the auxiliary motor 12 and the chain rocket wheel 10a.
Chain sprocket wheel 1 connected to the rotating shaft of
3b.

The auxiliary drive unit 9 includes the main drive unit 1
Similarly to the above, a chain guide 15 is provided to restrain the track of the drive chain 11 and stabilize the engagement between the tread plate 50 and the drive chain 11.

FIG. 2 is a view taken along the line AA of FIG. FIG.
, 16a is one rotation shaft of the drive chain 3 of the main drive device 1 which is rotatably fixed to the gantry by bearings 17a and 17b, and rotates the chain sprocket wheel 5b and the chain sprocket wheel 2a in synchronization. The other rotary shaft of the drive chain 3 of the main drive device 1 that is rotatably fixed to the gantry via the bearings 17c and 17d and rotates together with the chain sprocket wheel 2b.

The chain sprocket wheel 13b and the chain sprocket wheel 10a are rotatably fixed to the gantry by bearings 19a and 19b.
Drive chain 1 of auxiliary drive device 9 that rotates the motor synchronously
Reference numeral 18b denotes bearings 19c and 1b.
Auxiliary drive unit 9 rotatably fixed to the gantry via 9d and rotating together with the chain sprocket wheel 10b
Is the other rotating shaft of the drive chain 11.

FIG. 3 is a diagram showing an example of a method of forming a variable speed in the variable speed passenger conveyor according to the first embodiment of the present invention. The running wheels 51a, 51b, 51c, and 51d and the links 53a, 53b, 53c, and 5 are provided on the tread plates 50 that are continuously arranged on the conveyor line.
3d (hereinafter, the whole link is represented by 53) is arranged in a rhombus shape, and the guide rollers 54a and 54b at both ends are attached to the tread plate 50 in the width direction of the spline shaft 52
The two guide rollers 54a and 54b have a structure in which the interval changes in the transport direction.
The distance between the front and rear tread plates 50 is changed by traveling on the link guide rail 101 of the book. Reference numeral 57 denotes a connecting rod that connects the left and right links 53 across the center line of the tread plate 50.

The state shown in the drawing shows the acceleration region S2 or S3 in FIG. 1. When the tread plate 50 is conveyed in the direction of the arrow, the distance between the two link guide rails 101 is gradually reduced, and the guide is accordingly reduced. The rollers 54a and 54b are moved toward the inside of the tread plate 50, the rhombus-shaped link 53 changes its shape, and the interval between the tread plates 50 is increased, so that a high-speed state is formed.

Conversely, in the deceleration region, the interval between the two narrowed link guide rails 101 increases, the interval between the treads 50 decreases, and the vehicle enters a low speed state.

Here, the relationship between the distance between the link guide rails 101 and the distance between the front and rear treads 50 will be described.

In FIG. 3, a triangle formed by a diamond-shaped link 53 and a spline shaft 52 (A and B indicated by oblique lines in the figure)
Focusing on, the triangle has an A shape in a low speed region, but changes to a B shape in a high speed region. Then, the following relationship is established.

[0044] ^{_{L 1 2 = (F 1/}} 2) 2 + {(P 1 -L 2) / 2)} 2 = (F 2/2) 2 + {(P 2 -L 2) / 2)} 2 _{............ (1) F 1 = 2} [L 1 2 - {(P 1 -L 2) / 2)} 2] 1/2 = 2 [(F 2/2) 2 + {(P 2 -L ^{_{2) / 2)} 2 -}} {(P 1 -L 2) / 2)} 2] 1/2 ......... (2) F 2 = 2 [L 1 2 - {(P 2 -L 2) / 2 )｝ ² ] ^1/2 (3) where L ₁ is the length of the link 53 and L ₂ is the connecting rod 5
7 length. Further, F ₁ and F ₂ is the spacing step board 50 in the low and high speed regions, P ₁ and P ₂ is the distance of the link guide rails 101 in the slow and high speed range. That is, if the distances P ₁ and P ₂ between the link guide rails 101 are determined, the distances F ₁ and F ₂ between the tread plates 50 are uniquely determined. Further, the intervals P ₁ , P ₂ of the link guide rails 101 and the tread plate 50 in the high-speed region.
If the interval F ₂ of known, treadle interval F ₁ in the low speed range is determined uniquely.

[0045] In addition, the feed rate in the high-speed area V _h
Then, the feed speed _Vl in the low-speed region is as shown in Expression (4).

V _l = V _h · (F ₂ / F ₁ ) (4)

FIG. 4 shows a variable according to the first embodiment of the present invention.
Drive chain in main drive 1 of high-speed passenger conveyor
3 is a detailed view, FIG. 4 (a) is a plan view, and FIG.
FIG. 4 (a) is a view taken along the arrow BB, and FIG. 4 (c) is a side view.
You. The drive chain 11 in the auxiliary drive device 9 also
Since they have the same configuration,
Of the drive chain will be described. Is drive chain 3 in two rows
3a is a chain running roller of the drive chain 3.
Yes, meshes with chain sprockets 2a and 2b
Along with the chain guide rails 7a and 7b
I do. The front and rear chain running rollers 3a are chain rings.
The drive chain 3 is connected by the
A claw 3c is provided for every several links, and the claw 3c has a tread plate.
An engagement fitting 3d for engaging with 50 is attached.
You. Spacing P between front and rear engaging fittings 3d _TwoThe drive chain
In the case of 3, since the vehicle is in a high-speed section,
In the auxiliary drive chain 11
Is a low-speed drive, so
This corresponds to the interval between the plates 50. Between the chain running rollers 3a
P₁Then P₁Is a multiple of P_TwoTo match
ing.

FIG. 5 is a partially enlarged side view showing an example of the main driving device 1 of the tread plate 50 in the high-speed area S3 of the variable-speed passenger conveyor according to the first embodiment of the present invention. Tread 5
The engagement metal fittings 3d of the drive chain 3 wound around the chain sprocket wheel 2b are sequentially inserted into the concave portions 56a provided at the ends of the engagement metal fittings 56 from below.
a, and moves the tread plate 50 in the transport direction.
The running wheels 51a and 51b of the tread plate 50 run on the running rail 100. Reference numeral 55 denotes an auxiliary comb tooth pivotally attached to the tip of the tread plate 50, which forms a bridging tread when the interval between the tread plates 50 is wide.

Although only one tread plate 50 is shown, the engagement fittings 56 are connected to all tread plates 50. Further, in the high-speed section S9 of the return section B, the treadboard 50 that is upside down from that in FIG.

FIG. 6 is a view taken in the direction of arrows CC in FIG. In the figure, only the upper tread plate 50 for carrying passengers is shown,
In the figure, the return tread plate 50 in the inverted state on the lower side is omitted. Reference numeral 200 denotes a gantry on which the traveling rail 100, the link guide rail 101, and the chain guides 7a and 7b are installed. The aforementioned drive chain 3 is composed of two rows of chains, and the left and right chain running rollers 3a are
It runs on the chain guides 7a provided in the row, and is engaged with the engagement metal fittings 56 provided at the center of the tread plate 50 by the central metal fitting 3d. On the return line, the treads 50
Is reversed and is engaged with the drive chain 3 running on the chain guide 7b. The link rollers 54a and 54b are
It runs along the link guide rail 101. Treadboard 50
The auxiliary comb teeth 55 are provided on both sides of the gantry 20 to prevent the auxiliary comb teeth 55 from hanging down in the return line.
The guide rollers 58a and 58b which run on the guide rail 2 provided at the position 0 are provided.

FIG. 7 is an enlarged side view of the drive mechanism of the auxiliary drive device 9 of the variable-speed passenger conveyor according to the first embodiment of the present invention. S1 in which the tread plate 50 in the return section B rises and reverses
2 The chain sprocket 10a provided at the bottom
The auxiliary drive chain 11 has a structure similar to that of the drive chain 3 shown in FIG. 3 and has an engaging hardware 11d. Then, the engagement fitting 11d of the drive chain 11
Drives the tread plate 50 by hooking the concave portion 56a of the engagement fitting 56 of the tread plate 50.

FIG. 8 is a side view of the auxiliary motor 12 of the auxiliary driving device 9 of the variable speed passenger conveyor according to the first embodiment of the present invention shown in FIG. 1 and the chain sprocket 13a connected thereto. .

A coupling device 20 is attached to the tip of the rotating shaft 12a of the auxiliary motor 12, and a chain sprocket wheel 13a is attached to the coupling device 20.

FIG. 9 shows an enlarged side view of the coupling device 20. The coupling device 20 includes the auxiliary motor 1
The boss 20a is inserted into the tip of the second rotation shaft 12a,
The tip of the rotating shaft 12a is sandwiched and fixed between the plate 12b and the bolt 12c. At this time, the boss 20a and the rotating shaft 12a rotate integrally. In the figure, reference numeral 20b denotes a flange, and the chain sprocket wheel 13a is fixed to the flange 20b with fixing bolts 20c. 20
d is a friction plate holder, 20e is a friction plate, 20f is a disc spring,
20g is a disc spring holder, 20h is a nut, and 20i is an adjustment bolt.

The flange 20b transmits rotational power by frictional force via a friction plate 20e inserted into a gap between the boss 20a and the friction plate retainer 20d.
3a. The frictional force is controlled by a disc spring 20f provided behind the friction plate retainer 20d.
Is generated by pressing the flange 20b, and the force for pressing the disc spring 20f is generated when the disc spring retainer 20g behind the disc spring 20f is pressed by the adjustment bolt 20i. The adjustment bolt 20i is fixed to a nut 20h screwed and fixed to the boss 20a.

That is, the force for pressing the friction plate 20e increases in proportion to the degree of screwing of the adjusting bolt 20i,
Accordingly, the friction force between the flange 20b and the friction plate 20e increases. Since the rotational torque of the chain sprocket wheel 13a is proportional to the frictional force, the adjusting bolt 20i
By adjusting the frictional force, the rotation torque is not generated more than necessary.

[0057] Thus, increasing the feed rate V _l of the inverted step board 50, the link guide rails 101 in the feed rate V _h and the low speed and high speed regions of the step board 50 in the main drive 1
Is determined by the above equation (4), and the feed speed V _l in the region S11 in FIG.
The rotation speed of the auxiliary motor 12 of the auxiliary drive device 9 is set so that the feed speed of the drive chain 11 is faster than that of the drive chain 11.
On the other hand, the drive chain 11 of the auxiliary drive device 9 is
And the tread plate 50 in the main drive device 1 described above.
Cannot be conveyed at a speed higher than the feed speed determined by the feed speed and the interval between the link guide rails 101. Then
Sliding occurs between the flange 20b for fixing the chain sprocket wheel 13a and the friction plate 20e, and a constant sliding friction force is applied to the flange 20b via the friction plate 20e. This is a driving force for raising and reversing the tread plate 50.

Next, a variable-speed passenger conveyor according to a second embodiment of the present invention will be described. This variable speed passenger conveyor
Since only the driving system of the auxiliary driving device is different from that of the variable-speed passenger conveyor according to the first embodiment of the present invention described above, common parts are denoted by the same reference numerals and detailed description is omitted.

In the auxiliary drive device 21 for the variable-speed passenger conveyor, as shown in the side view of the drive system in FIG. 10, two chain sprocket wheels 10a and 10b spaced from each other, and a chain sprocket wheel The drive chain 11 wound around 10a and 10b is the same as that of the variable-speed passenger conveyor of the first embodiment of the present invention, but the mechanism for driving the chain sprocket wheel 10a is as follows. different.

That is, in the case of the auxiliary drive device 21, the chain sprocket wheel 10a is a power transmission chain sprocket wheel 22a provided on the rotation shaft of the chain sprocket wheel 2b of the main drive device 1.
And a power transmission chain sprocket wheel 22 provided on a rotation shaft of the chain sprocket wheel 10a.
b and the endless power transmission chain 23 wound around
As a result, the main driving device 1 is driven using the driving force.

FIG. 11 is a view taken in the direction of the arrow DD in FIG.
A rotary shaft 16b is rotatably fixed to the gantry by bearings 17c and 17d, and rotates the chain sprocket wheels 2b and 22a in synchronization. Also,
18a is rotatably fixed to the gantry by bearings 19a and 19b, and the chain sprocket wheels 22b and 10
a is a rotating shaft that rotates a synchronously.

FIG. 12 is a view taken in the direction of arrows EE in FIG.
On the upper side and the lower side in the figure, there are tread plates 50, which transport passengers on the upper side. 16b is a base 20 by bearings 17c and 17d.
This is a rotating shaft that is rotatably fixed to 0 and rotates the chain sprocket wheels 2b and 22a in synchronization. Reference numeral 16c denotes a nut for fixing the above-described chain sprocket wheel 2b to the rotating shaft 16b.

Further, a chain sprocket wheel 22a is provided at one end of the rotating shaft 16b with a coupling device 20 according to the first embodiment of the present invention. The coupling device 20 has a chain sprocket wheel 22a. Is attached. Reference numeral 16d denotes a nut for fixing the coupling device 20 to the rotation shaft 16b.

[0064] Then, the feeding speed V _l of the step board 50 to be raised inverted, by the distance of the link guide rails 101 in the feed rate V _h and the low speed and high speed regions of the step board 50 in the main drive 1, the above-mentioned formula (4) more determined, determination than the feed velocity V _l in the area S11 in FIG. 10 which is determined such that said feed speed of the drive chain 11 is advanced power transmission sprocket wheel 20a, the gear ratio of 20b by this I do. On the other hand, the drive chain 1 of the auxiliary drive device 9
1 is fitted to the tread plate 50, so that the feed speed of the tread plate 50 in the main drive device 1 and the link guide rail 101
Cannot be conveyed at a speed higher than the feed speed determined by the interval of Then, slippage occurs between the flange 20b for fixing the chain sprocket wheel 22a and the friction plate 20e, and a constant sliding friction force is applied to the flange 20b via the friction plate 20e. This is the driving force for raising and reversing the tread plate 50.

[0065]

According to the present invention, since a large load does not act on the guide rollers, the guide rails, and the engagement metal fittings of the treads of the variable-speed passenger conveyor, these components are not damaged.

[Brief description of the drawings]

FIG. 1 is a side view showing a drive system of a variable-speed passenger conveyor according to a first embodiment of the present invention.

FIG. 2 is a view as viewed in the direction of arrows AA in FIG. 1;

FIG. 3 is a diagram illustrating an example of a variable speed forming method in the variable speed passenger conveyor according to the first embodiment of the present invention.

FIG. 4 is a detailed view of a drive chain in a main drive device of the variable-speed passenger conveyor according to the first embodiment of the present invention, wherein (a) is a plan view and (b) is a BB of (a). Arrow view,
(C) is a side view.

FIG. 5 is a partially enlarged side view showing an example of a main driving device for a tread in a high-speed area of the variable-speed passenger conveyor according to the first embodiment of the present invention.

FIG. 6 is a view taken in the direction of the arrows CC in FIG. 1;

FIG. 7 is an enlarged side view of the drive mechanism of the auxiliary drive device of the variable speed passenger conveyor according to the first embodiment of the present invention.

FIG. 8 is a side view of the auxiliary motor of the auxiliary drive device for the variable-speed passenger conveyor according to the first embodiment of the present invention and a chain sprocket connected thereto.

FIG. 9 is an enlarged side view of the coupling device for the variable-speed passenger conveyor according to the first embodiment of the present invention.

FIG. 10 is a side view showing a drive system of a variable-speed passenger conveyor according to a second embodiment of the present invention.

FIG. 11 is a view as viewed in the direction of arrows DD in FIG. 10;

FIG. 12 is a view taken in the direction of arrows EE in FIG. 10;

FIG. 13 shows the opening angle of the link of the variable-speed passenger conveyor;
FIG. 5 is a diagram illustrating a relationship between a force N by which a guide roller presses a guide rail and a frictional force generated thereby.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 Main drive device 2a, 2b Chain sprocket wheel 3 Drive chain 3a Chain running roller 3b Chain link 3c Claw 3d Engagement hardware 4 Main motor 5a, 5b Chain sprocket wheel 6 Drive chain 7a, 7b Chain guide 9 Auxiliary drive device 10a, 10b Chain sprocket wheel 11 Driving chain 11d Engagement hardware 12 Auxiliary motor 13a, 13b Chain sprocket wheel 14 Drive chain 15 Chain guide 16a, 16b Rotary shaft 16c, 16d Nut 17a 17b, 17c, 17d Bearing 18a, 18b Rotary shaft 19a, 19b, 19c, 19d Bearing 20 Coupling device 20a Boss 20b Flange 20c Fixing bolt 20d Friction plate holder 20e Friction plate 20f Disc spring 20g Disc Screw holder 20h Nut 20i Adjusting bolt 21 Coupling device 22a, 22b Chain sprocket wheel for power transmission 23 Power transmission chain 50 Tread plate 51a, 51b, 51c, 51d Running wheel 52 Spline shaft 53a, 53b, 53c, 53d Link 54a, 54b Link Guide roller 55 Comb teeth 56 Engagement hardware 56a Recess 57 Connecting rods 58a, 58b Guide roller 100 Running rail 101 Guide rail 200 Mount

 ────────────────────────────────────────────────── ─── Continuing from the front page (72) Inventor Shinichiro Aoe 1-2-2 Marunouchi, Chiyoda-ku, Tokyo F-term (reference) 3F321 AA04 BA01 BA05 CA03 CA04 CA06 CA11 CC13 DC01 DD03

Claims (4)

[Claims] 1. Adjacent treads are connected to each other by a diamond-shaped link, and rollers provided at both ends of the link are run along two guide rails having a variable interval. In the variable-speed passenger conveyor that changes the distance between the treads by changing the distance between the guide rails, the drive mechanism is the main drive device of the tread provided in the constant speed area in the middle of the transport line, and the tread of the return line rises An auxiliary driving device provided at a lower portion of a reversing portion, the auxiliary driving device being an endless driving chain wound around two sprocket wheels arranged at a constant interval; and the driving chain. And a motor for driving a drive chain. The metal fitting is engaged with an engagement metal fitting of the tread plate to perform auxiliary driving of the tread plate so that the electric motor is driven. The axis of rotation variable-speed passenger conveyer, characterized in that the coupling device for transmitting power by friction of the friction plate is provided. 2. The auxiliary drive device is driven by setting the number of revolutions of a motor of the auxiliary drive device so that a feed speed of the step board of the portion that rises and reverses is faster than a feed speed sent only by the main drive device; 2. The system according to claim 1, wherein when a load equal to or more than a predetermined value acts on the tread, unnecessary power is not transmitted to a sprocket wheel of the auxiliary drive device due to friction of the friction plate. Operating method of variable speed passenger conveyor. 3. Adjacent treads are connected to each other by a diamond-shaped link, and rollers provided at both ends of the link are run along two guide rails having a variable interval. In the variable-speed passenger conveyor that changes the distance between the treads by changing the distance between the guide rails, the drive mechanism is the main drive device of the tread provided in the constant speed area in the middle of the transport line, and the tread of the return line rises An auxiliary drive device provided at a lower portion of a reversing portion, the auxiliary drive device being an endless drive chain wound around two auxiliary drive sprocket wheels arranged at a constant interval; A power transmission separately provided on one rotation shaft of the two auxiliary driving sprocket wheels for driving the driving chain, and a hardware arranged at an interval on the driving chain. An endless power transmission chain looped between a sprocket wheel and a power transmission sprocket wheel separately provided on one rotating shaft of the main driving sprocket wheel constituting the main driving device. And the metal fittings are engaged with the fittings of the tread plate to perform auxiliary driving of the tread plate. The auxiliary drive sprocket wheel for the auxiliary drive device and the power transmission sprocket wheel for the auxiliary drive device are provided. A variable speed passenger conveyor, wherein a coupling device for transmitting power by friction of a friction plate is provided on a common rotating shaft with the vehicle. 4. The number of teeth of the power transmission sprocket wheel on the main drive unit side of the power transmission chain, and the number of teeth of the power transmission sprocket wheel on the auxiliary drive unit side of the power transmission chain. By setting a small number of teeth, the auxiliary speed is set so that the feed speed of the tread of the portion to be raised and reversed is faster than the feed speed sent by only the main drive device,
4. The system according to claim 3, wherein when a load of a predetermined value or more is applied to the tread plate, unnecessary power is not transmitted to a sprocket wheel of the auxiliary driving device due to friction of the friction plate. Operating method of variable speed passenger conveyor.