JPH07149491A - Handrail driving device for man conveyor - Google Patents

Abstract

PURPOSE:To provide a handrail driving device for a man conveyance which is constituted to facilitate assembly, regulation, and maintenance and inspection and perform the arbitrary increase of a drive force without increasing an outer shape. CONSTITUTION:A drive unit incorporated in a triangular base 32 is secured to the slope part of a body frame 1. A driving device 40 comprising a motor 42 and a reduction gear 41 is fixed to the central part of the base 32. A handrail driving wheel 12, a sprocket 13, an intermediate idler, a tensioner 15, and a driving wheel 16 are arranged in the upper part of the base 32.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a handrail driving device for a man conveyor for driving a handrail of a man conveyor such as an escalator or a moving walkway.

[0002]

2. Description of the Related Art Conventionally, for example, handrail drive devices provided on escalators are often handrail winding drive systems as shown in FIGS. 1 to 3 described in Japanese Patent Publication No. 61-29314. This handrail drive device rotates one relatively large handrail drive wheel in conjunction with a step drive unit, winds the moving handrail around the outer half of the handrail drive wheel, and drives the moving handrail by the rotational frictional force. Is the way.

On the other hand, in recent years, there has been a strong demand from users to make the installation area of the escalator as small as possible to expand the effective area of the building and to make efficient use of the building. As shown in FIGS. 4 to 6, a linear handrail drive type escalator, which can reduce the width and depth of the escalator to reduce the size of the escalator, has been widely adopted.

This linear handrail drive type escalator will be briefly described with reference to FIGS. First, reference numeral 1 is a main body frame which is a main body of an escalator and is generally called a truss or the like, and reference numeral 2 is front and rear wheel guide rails 3a, 3b, 4a, 4 arranged in the left and right upper and lower stages of the main body frame 1.
The steps 2 are provided so as to be able to travel along b, and a large number of these steps 2 are continuously connected via a pair of endless step chains (not shown) and are wound like a conveyor.

Reference numeral 5 indicates a step drive section installed near the end of the upper horizontal section of the main body frame 1. The step drive section 5 is composed of a motor, a speed reducer, left and right step chain drive sprockets, and the like, which are not shown. Reference numeral 6 is an endless moving handrail that is drawn into the main body frame 1 through the outer peripheries of the left and right balustrades. The left and right moving handrails 6 are driven by a handrail drive device described below to rotate in synchronization with the steps 2.

Since this handrail drive device is symmetrically arranged in the main body frame 1, one side thereof will be described. First, a handrail drive sprocket 7 that rotates integrally with the step chain drive sprocket of the step drive unit 5 is provided.

The sprocket 7 has a first part indicated by a two-dot chain line.
Relay idler 9 linked via handrail drive chain 8
Is provided in the horizontal portion of the main body frame 1 on the side of the inclined portion. The relay idler 9 has an inner sprocket 9a around which the first handrail drive chain 8 is wound and rotates.
And an outer sprocket 9b provided coaxially outside the inner sprocket 9a.
A second handrail drive chain 10 is wound around b.

The second handrail drive chain 10 is first wound around an idler 11 provided in an inclined portion of the main body frame 1 and then raised upward, and a moving handrail 6 is moved upward.
A plurality of (4) handrail drive wheels 12 arranged in a straight line along the upper surface of the, the respective sprocket 13 and its intermediate idler 14 are wound around one after another, and further lowered. It is wound around the tensioning wheel 15a of the tensioner 15 and returned.

The relay idler 9 is provided with a tension adjusting stud 9c oriented horizontally in the boarding / alighting direction, and a nut screwed to the stud 9c is rotated to loosen / extend the first handrail drive chain 8. The absorption is adjusted. Further, the tensioner 15 is provided with a stud 15b for adjusting the tension downward, and the slack / extension of the second handrail drive chain 10 is absorbed and adjusted by turning a nut screwed to the stud 15b.

In the moving handrail drive device thus constructed, when the handrail drive sprocket 7 is rotationally driven integrally with the step chain drive sprocket of the step drive unit 5 coaxially, the first handrail drive chain 8 is attached thereto. The relay idler 9 rotates in conjunction with the second handrail drive chain 10
Interlock with each other to rotate each handrail drive wheel 12 to move the handrail 6
Friction drive.

In order to ensure that the frictional driving force of each handrail drive wheel 12 is transmitted to the moving handrail 6, the moving handrail 6 is sandwiched between the handrail drive wheels 12 from below and the moving handrail is moved to each drive wheel 12. A plurality of rolling wheels 16 for pressing 6 are provided below the handrail drive wheels 12 so as to face the handrail drive wheels 12.

By the way, due to the diversification of users in recent years,
Man conveyors are installed outdoors, and high-lift man conveyors are required. Along with this, an increase in driving force is required in order to prevent slippage of the moving handrail 6 with respect to the drive unit due to increase in rainwater and running resistance.

Therefore, as a countermeasure, it is conceivable to increase the pressure contact force between the handrail drive wheel 12 and the rolling wheel 16 forming each pair of the above-mentioned mobile handrail drive device with respect to the handrail 6. The service life of the drive wheels 12 and the rolling wheels 16 is shortened, which is not preferable. Therefore, the number of handrail drive wheels 12 and the number of rolling wheels 16 must be increased in order to compensate for this decrease in life.

That is, as shown in FIG. 6, for each of the four handrail drive wheels 12 and rolling wheels 16 shown in FIG. 4, further four handrail drive wheels 22 and rolling wheels 26 are first provided in the lower stage. It is additionally provided on the side. Next, the long second handrail drive chain 20 is wound around the relay idler 9, and this is attached to the sprockets 13 of the four handrail drive wheels 12 and the intermediate idler 14 thereof arranged in front through the idler 11 as in FIG. It is wound around one after another, further wound around the intermediate idlers 27 and 28, and then wound around the sprockets 23 of the four handrail drive wheels 22 and their intermediate idlers 24 arranged next to each other, and finally the tensioner 15 below. Wrap it around the tension wheel 15a and return it.

As a result, the step drive section 5 is also provided as described above.
With the rotation of the handrail drive sprocket 7, the first handrail drive chain 8, the relay idler 9, and the second handrail drive chain 20.
And 8 rotate in conjunction with each other, and as a result, each of the eight handrail drive wheels 12, 22 rotates, and the moving handrail 6 is pinched and frictionally driven together with the lower rolling wheels 16, 26. . Therefore, the moving handrail 6 is increased by the increase of the handrail drive wheel 22 and the rolling wheel 26.
Driving force can be increased.

[0016]

However, in the moving handrail drive device constructed as described above, in order to increase the driving force of the moving handrail 6 as described above, as shown in FIG. When the handrail drive wheel 22 and the rolling wheel 26 are further added to the drive wheel 12 and the rolling wheel 16, not only the length of the second handrail drive chain 20 is increased, but also the intermediate idlers 27, 28.
Must also be added.

For this reason, the structure of the handrail drive unit becomes complicated, and a large number of idlers and sprockets must be centered and adjusted on the same vertical plane, which increases the time required for the assembling work. In addition, the second handrail drive chain 20
If the length becomes longer, the extension work must be performed frequently, and the time and effort for maintenance and inspection increase.

On the other hand, when a large driving force is required due to the high lift of the escalator, the chains 8, 20 and the sprockets 7, 9a, 9 for driving a series of driving devices are required.
Since it is necessary to increase the shape of b, the configuration is further complicated and the outer shape of the escalator is increased.

SUMMARY OF THE INVENTION Therefore, an object of the present invention is to provide a handrail drive device for a my-conveyor which can easily perform an assembly centering adjustment work and a maintenance work without increasing the outer shape and can increase a driving force of a moving handrail. And

[0020]

According to a first aspect of the present invention, there is provided a man driving a moving handrail wound on a main frame by a plurality of sprockets driven by a driving unit via a chain and a plurality of driving wheels. In the handrail drive device of the conveyor,
It is characterized in that the main frame accommodates a plurality of handrail drive units composed of a drive unit, a chain, a plurality of sprockets, and a plurality of drive wheels.

Further, the invention according to claim 2 is a handrail drive for a man conveyor that drives a moving handrail wound around a main frame by a plurality of sprockets driven by a drive unit via a chain and a plurality of drive wheels. In the device, a plurality of handrail drive units configured by a drive unit, a chain, a plurality of sprockets, and a plurality of drive wheels are housed in a main frame, and the drive unit is provided between a pair of step guide rails. .

Further, the invention according to claim 3 is a handrail driving device for a man conveyor which drives a moving handrail wound around a main frame by a plurality of sprockets driven by a driving unit via a chain and a plurality of driving wheels. In, in the main frame, a plurality of handrail drive units composed of a drive unit, a chain, a plurality of sprockets, and a plurality of drive wheels are housed, and the drive unit is formed of a planetary gear reducer and an outer frame of the reducer. It is characterized by being configured with a geared motor attached.

[0023]

In the man-conveyor handrail drive device thus constructed, since a plurality of handrail drive units are provided, a long handrail drive chain from the drive wheels is no longer required as in the conventional case, and an intermediate idler is installed. Since it is not necessary to add it and can be placed anywhere in the middle part of the man conveyor, not only can the structure of the upper floor be simplified, but the required handrail drive force can be obtained simply by increasing the number of handrail drive units. be able to.

[0024]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to FIGS. FIG. 1 is a view showing a handrail driving device for a passenger conveyor according to the present invention, which corresponds to FIG. 6 shown in the prior art,
FIG. 2 is an enlarged sectional view taken along the line AA of FIG. In the figure, the same elements as those shown in FIGS. 3 to 6 are designated by the same reference numerals and the description thereof will be omitted. Although an escalator will be described as an example here, the same applies to other man conveyors such as moving walkways.

1 and 2, the handrail drive unit 31
Is for driving the handrail drive wheel 12, the tensioner 15, the rolling wheel 16, and the handrail drive wheel 12 with each sprocket 13 on a base 32 made of an isosceles triangular steel plate with the rigidity increased by bending the hypotenuse. The driving device 40 is attached, and the driving device 40 is arranged between the guide rails 4 a and 4 b of the step 2.

The drive device 40 is a geared motor integrally formed by a reduction gear 41 composed of a planetary gear and a motor 42 attached to the frame of the reduction gear 41, and a drive sprocket attached to the output shaft. 43, sprocket
A handrail drive chain 44 for rotating the 13 and the tensioner 15 is wound around.

Handrail drive unit integrated into this unit
In 31A, the base 32 is the upper chord member 1 of the inclined portion of the main body frame 1.
It is easily assembled by being fixed to a and the lower chord member 1b by a plurality of bolts 33a and 33b.

Further, in the case of an escalator installed outdoors or an escalator with a high lift, which may cause slippage of the moving handrail 6 due to insufficient driving force only with the first handrail driving unit 31A, in order to increase the driving force. A second moving handrail driving unit 31B having the same configuration is added to the lower floor position in the inclined portion of the main body frame 1 with respect to the first moving handrail driving unit 31A.

Further, the motor 42 for driving these drive devices 31A, 31B is operated and stopped at the same time by the same power circuit as the motor (not shown) for driving the step 2 installed in the machine room. It is connected to the.

In the handrail drive device of the passenger conveyor constructed as described above, the escalator is activated by the control circuit, and at the same time when a current flows through the motor in the machine room, the motor 42 of the handrail drive device 40 is also activated and rotated. This rotation is reduced by the speed reducer 41, the sprocket 13 of the handrail drive wheel 12 is rotationally driven by the drive sprocket 43 and the handrail drive chain 44, and the moving handrail 6 pressed against the handrail drive wheel 12 and the rolling wheel 16 is driven. .

The handrail drive device constructed in this way is
Since it is integrated with the base 32, it can be assembled as a unit, facilitating the centering adjustment work between each sprocket and the conventional step drive section 5
Since it is not necessary to add the handrail drive sprocket 7, the long handrail chain 20, and the intermediate idlers 9, 27, 28, the configuration inside the escalator can be simplified and the number of adjustment points during maintenance and inspection is reduced, so maintenance and inspection can be performed. The time required can be shortened.

When increasing the driving force of the handrail,
The required driving force can be easily obtained only by adding a handrail drive unit integrally configured to the unit.

[0033]

【The invention's effect】

[0034]

As described above, according to the invention as set forth in claim 1, a moving handrail wound around a main frame by a plurality of sprockets driven by a drive unit via a chain and a plurality of drive wheels. In a handrail drive device for a man conveyor that drives a plurality of handrail drive units composed of a drive section, a chain, a plurality of sprockets, and a plurality of drive wheels, a long handrail drive chain from the drive wheels is housed in the main frame. In addition to eliminating the need for an intermediate idler, it can be placed anywhere in the middle of the man conveyor, simplifying the structure of the upper floor and increasing the handrail drive device to obtain the required handrail drive force. As a result, it is easy to assemble, adjust and maintain without increasing the outer shape, and the handrail drive of the man conveyor that can increase the driving force of the moving handrail. It is possible to obtain the location.

According to a second aspect of the present invention, there is provided a man conveyor for driving a moving handrail wound around a main frame by a plurality of sprockets driven by a driving unit via a chain and a plurality of driving wheels. In the handrail drive device, a plurality of handrail drive units configured by a drive unit, a chain, a plurality of sprockets, and a plurality of drive wheels are housed in a main frame,
By providing the drive unit between the pair of step guide rails,
It eliminates the need for long handrail drive chains from the drive wheels, eliminates the need for additional intermediate idlers, and can be placed anywhere in the middle of the man conveyor, simplifying the configuration of the upper floors and increasing the number of handrail drives. Since it is possible to obtain a required handrail driving force, it is possible to obtain a handrail driving device for a man conveyor that is easy to assemble, adjust and maintain without increasing the outer shape and that can increase the driving force of the moving handrail. it can.

According to the third aspect of the present invention, the handrail of the man conveyor for driving the moving handrail wound on the main frame by a plurality of sprockets driven by a drive unit via a chain and a plurality of drive wheels. In the drive unit, the main frame accommodates a plurality of handrail drive units configured by a drive unit, a chain, a plurality of sprockets, and a plurality of drive wheels,
By configuring the drive unit with a speed reducer composed of planetary gears and a geared motor attached to the outer frame of this reducer, a long handrail drive chain from the drive wheels is not required, and an intermediate idler can be added. It is not necessary and can be placed anywhere in the middle of the passenger conveyor, the structure of the upper floor can be simplified, and it is possible to obtain the required handrail driving force simply by increasing the handrail driving device, so increase the external shape. In addition, it is possible to obtain a handrail driving device for a man conveyor which is easy to assemble, adjust and maintain and can increase the driving force of the moving handrail.

[Brief description of drawings]

FIG. 1 is a diagram showing an embodiment of a handrail driving device for a passenger conveyor according to the present invention.

FIG. 2 is an enlarged cross-sectional view taken along the line AA of FIG.

FIG. 3 is a diagram showing an example of a conventional handrail driving device for a passenger conveyor.

FIG. 4 is a view on arrow BB in FIG.

5 is a left side view of FIG.

FIG. 6 is a view showing an example different from FIG. 3 of a handrail driving device for a conventional passenger conveyor.

[Explanation of symbols]

1 ... Main body frame, 2 ... Steps 3a, 3b, 4a, 4b
... front / rear wheel guide rails, 5 ... step drive part, 6 ... moving handrail, 7 ... handrail drive sprocket, 8 ... first handrail drive chain, 9 ... relay idler, 10 ... second handrail drive chain,
11 ... Idler, 12 ... Handrail drive wheel, 13 ... Sprocket, 14
… Intermediate idler, 15… Tensioner, 16… Rolling wheel, 31A,
31B ... Handrail drive part, 32 ... base, 40 ... drive device, 41 ...
Reduction gear, 42 ... Motor, 43 ... Drive sprocket, 44 ... Drive chain.

Claims (3)

[Claims] 1. A handrail drive device for a man conveyor that drives a moving handrail wound around a main frame with a plurality of sprockets driven by a drive unit via a chain and a plurality of drive wheels, wherein the drive unit and the chain are provided. A handrail drive device for a man conveyor, characterized in that a plurality of handrail drive units composed of the plurality of sprockets and the plurality of drive wheels are housed in the main frame. 2. The handrail drive device for a passenger conveyor according to claim 1, wherein the drive unit is provided between the pair of step guide rails. 3. The man conveyor according to claim 1, wherein the drive unit is composed of a speed reducer formed of a planetary gear and a geared motor attached to an outer frame of the speed reducer. Handrail drive.