JPH07315741A - Handrail drive device of man conveyer - Google Patents

Abstract

PURPOSE: To avoid the fatigue of a handrail, and to prevent the slip during the movement by arranging cores of large number of reception rollers in a handrail drive device in a relatively deviated manner from cores of a large number of press rollers. CONSTITUTION: A drive pulley 14 and a driven pulley 16 are supported by a base panel 5 fixed to a truss 4, and a drive belt 18 is wound around the drive pulley 14 and the driven pulley 16. A large number of reception rollers 25a-25f are mounted on the base panel 5 in an arched shape, and a large number of press rollers 26a-26h opposite to these large number of reception rollers 25a-25f are arranged outside the drive belt 18 at the position deviated from the reception rollers 25a-25f, and urged to the reception rollers 25a-25f side by a compression spring 30. A handrail 2 is interposed between the press rollers 26a-26h and the reception rollers 25a-25f to achieve the movement and guide by turning the drive belt 18.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a handrail drive device for moving a handrail such as an elevator at the same speed as a step.

[0002]

2. Description of the Related Art As a conventional elevator handrail drive device, for example, there is one shown in FIG. In the figure, a handrail 101 is provided on both sides of the step of the escalator for the safety of passengers, and a handrail 102 that moves at the same speed as the step is attached to the handrail 101. The handrail 102 is largely bent at a certain position and is in contact with the drive wheel 103 located at this position.

When the drive wheel 103 is rotated, the handrail 102 is moved, but since the handrail 102 is largely bent and brought into contact with the drive wheel 103, the handrail 102 is placed between the drive wheel 103 and the handrail 102. It can be moved without slipping due to the large friction force generated.

[0004]

In such a conventional handrail drive device, the handrail 102 is used.
Was largely bent at the position of the drive wheel 103, so that when it is driven, it will be greatly bent many times. As a result, the handrail 102 may be fatigued after many years of use, and may not be usable.

On the other hand, as a handrail drive device,
There is a type in which a handrail is held and moved by a plurality of driving rollers and a plurality of driven rollers. In this type, since the drive roller and the driven roller are linearly arranged, the handrail does not fatigue, but the frictional force generated between the handrail and the drive roller is small,
There was a problem that it slipped when moving.

It is an object of the present invention to provide a handrail drive device which does not fatigue even if it is used for many years and does not slip when moving.

[0007]

In order to achieve such an object, according to the present invention, a base member provided on a truss of a man conveyor, and a drive pulley and a driven pulley attached to the base member. A drive belt wound around the drive pulley and the driven pulley, a plurality of receiving rollers located in the drive belt and arranged in a bow shape on the base member, and arranged so as to face the receiving rollers. A large number of pressing rollers provided, a handrail interposed between these pressing rollers and the receiving rollers, and the pressing rollers pressed toward the receiving rollers to press the handrail against the drive belt. And a biasing member for causing the cores of the large number of receiving rollers and the cores of the large number of pressing rollers to be relatively displaced from each other.

[0008]

The driving pulley is rotated by the rotational driving force from the driving device. The drive belt goes around by the drive pulley,
Since the handrail is pressed against this drive belt,
The handrail is moved by the frictional force generated during this time.

[0009]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below with reference to the drawings. 1 to 5 are views showing an embodiment of a handrail drive device for a passenger conveyor according to the present invention. There are an escalator, a moving walkway, etc. as the man conveyor, but in this embodiment, the escalator will be described.

In FIG. 5, reference numeral 1 is a handrail provided on both sides of the step of the escalator, and a handrail 2 which moves at the same speed as the step is attached to the handrail 1. The handrail 2 is moved by a handrail drive device 3 provided on the truss.

As shown in FIGS. 1 and 2, the handrail drive device 3 has a base panel 5 fixed to a truss 4 with bolts (not shown) or the like. A pair of small and elongated support panels 6 and 7 are attached. That is, as shown in FIG. 3, one of the pair of support panels 6 and 7 6
A boss piece 8 is welded to each other, and one support panel 6 is fixed to the base panel 5 by screwing a bolt 9 into the boss piece 8. The boss piece 10 is also welded to the other support panel 7, and the other support panel 7 is fixed to the one support panel 6 by screwing the bolt 11 into the boss piece 10.

As shown in FIG. 4, a support shaft 12 is planted at one end of the base panel 5, and a drive pulley 14 is rotatably supported by the support shaft 12 via a bearing 13. A sprocket 15 that receives the rotational driving force from the driving device via a chain (not shown) is fixed to the driving pulley 14.

As shown in FIG. 3, a driven pulley 16 is rotatably provided on the other end of the base panel 5 via support panels 6 and 7. That is, the driven pulley 16
The support shaft 17 is inserted into the long holes 6a and 7a formed in the support panels 6 and 7. A drive belt 18 is wound around the driven pulley 16 and the drive pulley 14,
The drive belt 18 is applied with a certain amount of tension by a tension mechanism 19.

The tension mechanism 19 has a holding member 20 for holding the driven pulley 16 via a support shaft 17 and having a substantially U-shaped cross section. A rod 21 is implanted in the holding member 20,
A receiving seat 22 is attached to the tip of the rod 21. A compression spring 24 is contracted between the receiving seat 22 and the end portions 23 of the support panels 6 and 7, and the driven pulley 16 is pulled by the urging force of the compression spring 24 to apply tension to the drive belt 18. ing.

As shown in FIG. 1, a large number of receiving rollers 25a ... 25f are rotatably fixed to the inside of the drive belt 18 in the pair of support panels 6, 7, and the receiving rollers 25a. Are arranged in. The receiving rollers 25a ... 25f include a plurality of pressing rollers 2.
.. 26h are arranged opposite to each other. The base panel 5 and the support panels 6 and 7 together form a base member.

These pressing rollers 26a, 26b are supported by a first pressing member 27a having a substantially U-shaped cross section, and rollers 26c, 26d, 26e, 26f, 26g, 2 are provided.
In the same manner for 6h, the first pressing members 27b, 27c, 27
supported by d. First pressing member 27a, 27
b is swingably supported by a second pressing member 28a having a substantially U-shaped cross section, and the first pressing members 27c and 27d are also similarly supported by the second pressing member 28b. Second
The pressing members 28a and 28b are swingably supported by a third pressing member 29.

The third pressing member 29 is supported by a pressing panel 31 via a compression spring 30, and the pressing roller 26a is supported by the urging force of the compression spring 30.
.. 26h are pressed toward the receiving rollers 25a ,. 26h and the receiving roller 25
The handrail 2 is interposed between the a ... 25f, and the handrail 2 is pressed against the drive belt 18 by the pressing force of the pressing rollers 26a. The pressing force can be adjusted by the bolts 32 and 33.

Rotational driving force is transmitted from the driving device to the sprocket 15 through the chain, and the driving pulley 14 rotates. The drive belt 18 is circulated by the drive pulley 14, and the handrail 2 is pressed against the drive belt 18 as described above. Therefore, the handrail 2 is moved by the frictional force generated during this. Here, since the receiving rollers 25a ... 25f to be arranged have an arched shape, the handrail 2 is not greatly bent during movement.

On the other hand, since the receiving rollers 25a ... 25f are arranged in a bow shape rather than a straight shape, the driving belt 1
A large frictional force is generated between the handrail 2 and the handrail 2, and the handrail 2 is reliably moved without slipping. 26h and the receiving roller 25.
The cores are slightly offset from a ... 25f. For this reason,
The drive belt 18 and the handrail 2 are provided with a pressing roller 26.
26h and the receiving rollers 25a ... 25f form a meandering shape. As a result, a larger frictional force is generated between the drive belt 18 and the handrail 2, and the movement of the handrail is performed more reliably.

By the way, the first pressing member 27a has a center of swing 0 of the second pressing member 28a as compared with the first pressing member 27b.
It is located a little away from the pressing rollers 26a and 26b, and the pressing force of the pressing rollers 26a and 26b is slightly weaker than that of the pressing rollers 26c and 26d. In addition, the presser rollers 26g, 2
Similarly, the pressing force of 6h is slightly weaker than the pressing rollers 26e and 26f. Therefore, the intervening handrail 2 is easily moved in and out between the pressing rollers 26a ... 26h and the receiving rollers 25a ... 25f when moving.

[0021]

As described above, according to the present invention,
Since the handrail is provided between the large number of receiving rollers and the large number of pressing rollers arranged in a bow shape, the handrail is not greatly bent during movement. As a result, the handrail will not fatigue after years of use. In addition, since the handrail is bent in an arched shape and is pressed against the drive belt and has a meandering shape, a large frictional force is generated between the handrail and the drive belt and the handrail does not slip.

[Brief description of drawings]

FIG. 1 is a front view showing an embodiment of a handrail drive device for an escalator as a passenger conveyor according to the present invention.

FIG. 2 is a sectional view taken along line AA in FIG.

FIG. 3 is a partial cross-sectional view taken along the arrow B in FIG.

FIG. 4 is a partial cross-sectional view taken along arrow C in FIG.

[Fig. 5] Schematic diagram of the entire escalator

FIG. 6 is an overall schematic view of a conventional escalator.

[Explanation of symbols]

 2 ... Handrail 4 ... Truss 5 ... Base panel 14 ... Drive pulley 16 ... Followed pulley 18 ... Drive belt 25a ... 25f ... Receiving roller 26a ... 26h ... Pressing roller 30 ... Compression spring

 ─────────────────────────────────────────────────── ─── Continuation of front page (72) Inventor Takayuki Nagashima 3-2-1 Sakado, Takatsu-ku, Kawasaki City, Kanagawa Nihon Otis Elevator Co., Ltd. Otis Technical Research Institute (72) Inventor Harman W. Ars, Federal Republic of Germany, Obernkirchen 31683, Mashstrasse 5

Claims (1)

[Claims] 1. A base member provided on a truss of a man conveyor, a driving pulley and a driven pulley attached to the base member, a driving belt hung on the driving pulley and the driven pulley, and a position inside the driving belt. A plurality of receiving rollers arranged in a bow shape on the base member, a plurality of pressing rollers arranged to face the receiving rollers, and between the pressing rollers and the receiving rollers. An interposing handrail; and an urging member that presses the pressing roller toward the receiving roller to press the handrail against the drive belt. The cores of the receiving rollers and the pressing rollers are provided. A man-conveyor handrail drive device characterized in that the core of the conveyor is relatively displaced.