JPH052534Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] This invention relates to a device for driving a moving handrail of a passenger conveyor such as an escalator or a moving walkway.

[Conventional technology]

2 to 5 are diagrams showing a conventional handrail drive device for a passenger conveyor disclosed in, for example, Japanese Utility Model Application Publication No. 59-97976.
FIG. 5 is a sectional view taken along the - line, - line, and - line of FIG. 2, respectively.

In the figure, 1 is a truss that forms the skeleton of the passenger conveyor, 2 is a parapet fixedly erected on the truss 1, 3 is a movable handrail placed around the outer periphery of the balustrade 2, and 4 and 5 are inside the truss 1 from the lower floor. The step rails 6 are connected to each other in an endless manner, and a front wheel 8 is attached to a shaft 7 fixed to the upper end of the step rail, and a rear wheel 10 is attached to a shaft 9 fixed to the lower end of the step rail. The steps 6 are configured so that the steps 6 are moved by rolling on the step rails 4 and 5. Reference numeral 11 denotes a drive machine consisting of an electric motor, a speed reducer, an electromagnetic brake, etc. installed in a machine room set on the upper floor of the truss 1, 12 a drive shaft rotatably supported by the truss 1, and 13 a drive. A drive chain gear 15 is fixed to the shaft 12 and driven by the driver 11 via a chain 14; 15 is a pair of step chain gears fixed to the drive shaft 12 on the left and right; A step chain with a shaft 7 connected to it, 1
7 is a first handrail chain gear fixed to the drive shaft 12 and disposed between the step chain gear 15 and the drive chain gear 13;
18 is a first chain wrapped around the first handrail chain gear 17; 19A, 19B... are shafts arranged parallel to the drive shaft 12 at appropriate intervals and rotatably attached to the truss 1; 20A, 19B... 20B...is axis 1
A pair of second handrail chain gears 9A, 19B are fixed to the left and right, and the first chain 18 is wound around one of the second handrail chain gears. The three handrail chain gears 22A, 22B are the second handrail chain gears 21A, 21B, respectively, which are wound around the third handrail chain gears 21A, 21B...
A plurality of chains (23A, 23B, . . . , 23A, 23B, etc.) are rotatably attached to the truss 1 (four each in FIG.
Handrail chain gears 24A, 24B... are handrail drive wheels that are driven by fourth handrail chain gears 23A, 23B and contact the inner surface of the moving handrail 3 to drive it, 25A, 25B... are third handrail chain gears 21
A, 21B..., chains 22A, 22B..., fourth handrail chain gears 23A, 23B..., and handrail drive wheel 24
Handrail drive machine composed of A, 24B... 2
6A, 26B... are first chains that are alternately wound around the same side of the front and rear second handrail chain gears 20A, 20B, respectively.

The conventional passenger conveyor handrail drive device is configured as described above, and when the drive machine 11 is driven, the drive chain gear 13 is rotated through the chain 14, and the step chain gear 15 is driven. Now, the front wheel 8 of the step 6 is guided by the step rail 4 and the rear wheel 10 is guided by the step rail 5 via the chain 16, so that the step 6 moves between the parapets 2, 2. On the other hand, as the drive chain gear 13 rotates, the first handrail chain gear 17 also rotates, and the first chain 18
The second handrail chain gear 20A is driven via.
Now, the third handrail chain gear 21A also rotates, and the second handrail chain gear 21A also rotates.
The fourth handrail chain gear 23A rotates via the chain 22A, and the handrail drive wheel 24A is driven. Also, due to the rotation of the second handrail chain gear 20A, the first chain 26
The second handrail chain gear 20B in the next stage also rotates through A, and the handrail drive wheel 2 rotates through the third handrail chain gear 21B, second chain 22B, and fourth handrail chain gear 23B.
4B is driven. Similarly, each axis 19
A, 19B... are driven, and handrail drive machines 25A,
25B operates, and the moving handrail 3 moves around the outer circumference of the handrail 2 in synchronization with the movement of the steps 6.

[Problem that the invention attempts to solve]

In the conventional passenger conveyor handrail drive device as described above, the distance between the first handrail chain gear 17 and the second handrail chain gear 20A and between the second handrail chain gears 20A and 20 is
The first strand 18, 26A, 26B... which connects B...
are arranged alternately, so the torsional deflection of the shafts 19A, 19B, . . . varies greatly due to changes in the load on the handrail 3. Therefore, the handrail drive machine 25
Third handrail chain gear 2 that transmits power to A and 25B
1A, 21B, etc. no longer rotate synchronously (hereinafter, this will be referred to as tooth misalignment). When this tooth misalignment occurs, a rotational misalignment occurs between the handrail drive wheels 24A, 24B..., which accelerates wear of the handrail drive wheels 24A, 24B... and the movable handrail 3, or causes pulsation of the movable handrail 3. There is a problem.

This idea was made to solve the above problem, and it reduces the tooth misalignment that occurs in the third handrail chain gear, reduces wear on the handrail drive wheel and moving handrail, and allows smooth operation of the moving handrail. It is an object of the present invention to provide a handrail drive device for a passenger conveyor.

[Means for solving problems]

The handrail drive device for a passenger conveyor according to this invention is such that the first and second handrail chain gears and the first chain wrapped around them are respectively arranged on one side of their shafts.

[Effect]

In this invention, since the first and second handrail chain gears and the first chain are arranged on one side of the shaft, the torsional deflection of each shaft is small even when the load on the moving handrail changes, and the third handrail chain The synchronization of the gears is not impaired.

〔Example〕

1 to 3 are views showing one embodiment of this invention, and FIG. 1 is a cross-sectional view corresponding to the line ``--'' in FIG. 2, and the same reference numerals indicate the same parts.

In the figure, 28A, 28B... are the second handrail chain gears 20A, 20B... respectively formed integrally with the second handrail chain gears 20A, 20B...
The handrail chain gears are arranged on one side of the shafts 19A and 19B, respectively, and the second handrail chain gears 28A and 28B
A first strand 26A is wound between them. Similarly, the first chains 26C are wound around the second handrail chain gears 28C, 28B (not shown). Therefore, only the third handrail chain gears 21A, 21B... are fixed to the other side of each shaft 19A, 19B.

The operation of the passenger conveyor handrail drive device configured as described above is similar to that of the conventional device.

First and second handrail chain gears 17, 20A, 20
A, 28A, 28B, 20B... and first strand 1
8, 26A, 26B... are shafts 12, 19A, 19B
Since it is arranged on one side of the third handrail chain gears 21A, 21B, the tooth misalignment that occurs in the third handrail chain gears 21A, 21B, etc. is slight. Therefore, the handrail drive wheels 24A, 24B...
The wear of the movable handrail 3 is reduced, and pulsation of the movable handrail 3 is prevented. In particular, the second handrail chain gears 20A, 28A, the second handrail chain gears 20B, 28
The fact that B... is integrated greatly contributes to the above-mentioned tooth misalignment prevention function. In addition, shafts 19A, 1
Since the torsion acting on 9B is reduced, the shaft 19
A and 19B can be made thinner, and material costs and installation costs can be reduced due to weight reduction.

[Effect of idea]

As explained above, in this invention, the first handrail chain gear fixed to the drive shaft, the plurality of second handrail chain gears fixed to the plurality of shafts parallel to the drive shaft, and the The first
Since the chains are placed on one side of their respective shafts, tooth misalignment between the second handrail chain gear and the third handrail chain gear, which is coaxial, is reduced, reducing wear on the handrail drive wheels and moving handrails, and ensuring smooth operation. It has the effect of being able to operate a moving handrail.

[Brief explanation of the drawing]

FIG. 1 is a diagram showing an embodiment of a handrail drive device for a passenger conveyor according to this invention, and FIG.
2 and 3 are diagrams showing the handrail drive device of this invention and the conventional passenger conveyor. FIG. 2 is a longitudinal side view, and FIG.
Line sectional views, FIGS. 4 and 5 are diagrams showing a conventional handrail drive device for a passenger conveyor, and FIG.
FIG. 5 is a sectional view taken along the - line in the figure, and FIG. 5 is also a sectional view taken along the - line. In the figure, 3 is a movable handrail, 11 is a drive machine, 12 is a drive shaft, 17 is a first handrail chain gear, and 18 is a first
Chains, 19A, 19B... are shafts, 20A, 20B... are second handrail chain gears, 21A, 21B... are third handrail chain gears, 22A, 22B... are second chains, 26A,
26B... is the first chain, and 28A, 28B... are the second handrail chain gears. Note that the same reference numerals in the figures indicate the same parts.

Claims (1)

[Scope of Claim for Utility Model Registration] (1) A first handrail chain gear is fixed to a drive shaft driven by a drive machine installed in a machine room, and a plurality of handrail chain gears are installed on the return side of the moving handrail in parallel with the drive shaft. axes, and a plurality of second sheets on each of these axes.
Fix the handrail chain gear and the third handrail chain gear,
Between the first and second handrail chain gears and the second
Driving the second handrail chain gear by first chains respectively wound between the handrail chain gears,
The movable handrail is driven by a second chain wrapped around the third handrail chain gear, characterized in that the first and second handrail chain gears and the first chain are arranged on one side of each of the shafts. Passenger conveyor handrail drive system. (2) A handrail drive device for a passenger conveyor as set forth in claim 1 of the utility model registration claim, in which a plurality of second handrail chain gears are integrally formed.