JPH0357025B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Technical Field of the Invention] This invention relates to an improvement in a driven chain gear system used in a passenger conveyor such as a curved escalator or a moving walkway.

[Prior art]

Curved passenger conveyors are disclosed in Japanese Patent Application Laid-open No. 59-74881, for example.
As shown in the figure, a large number of endless treads are arranged in an arc shape. A tread chain, also formed in an endless shape, is arranged along the tread plate, and each tread plate is connected to the tread chain. This tread chain is driven at one side of the reversing section (the upper floor in the case of an escalator), and is reversely guided by a driven chain gear at the other side of the reversing section (the lower floor in the case of an escalator). It is conceivable that the shaft of this driven chain gear is provided with a tension device as shown in, for example, Japanese Utility Model Application No. 54-133592, to apply tension to the tread chain. These first
This will be explained with reference to the drawings and FIG.

In the figure, 1 is the main frame of a curved passenger conveyor (shown as an escalator in Figure 1), which has an arcuate horizontal projection and is installed at an angle. 1a is the upper floor of main frame 1, 1b is also the lower floor, 2 is main frame 1
A conveyance path 3 is arranged in the conveyance path 2, each having a fan-like planar shape, and a large number of tread plates are continuously formed in an endless shape. 4 is an endless tread plate arranged on both sides of the tread plate 3. A tread chain to which each tread 3 is connected; 5 is a drive unit disposed on the upper floor part 1a of the main frame 1 and drives the tread chain 4; 6 is a drive machine installed in the lower floor part 1b of the main frame 1 for driving the tread chain 4; A driven chain gear is wound around the reversing part, 6a is its shaft, 7 is a support that supports the shaft 6a, 8 is a tension bar fixed to the support 7, and 9 is a tension bar that tensions the tension bar 8 to the tread chain 4. 10 is a guide rail fixed to the main frame 1 and placed opposite to the support 7, 10a is its horizontal surface, 10b is also a vertical surface, and 11 is a guide rail that is placed opposite the support 7.
A roller 12 is mounted on the support body 7 and rolls on the vertical surface 10b of the guide rail 10;
Reference numeral 13 indicates a handrail which is erected on the main frame 1 and arranged on both sides of the footboard 3, and reference numeral 14 is a movable handrail which is formed in an endless shape and circulates around the periphery of the handrail 13 and within the main frame 1.

That is, when the tread chain 4 is driven by the driver 5, the tread 3 connected thereto is also driven, and at the same time, the movable handrail 14 moves on the parapet 13 in the same direction as the tread 3.

Tension is applied to the tread chain 4 by a push spring 9 at the lower floor portion 1b, and when the tread chain 4 stretches, the driven chain gear 6 is moved on the guide rail 10 via rollers 11 and 12. Thus, the tension of the tread chain 4 is maintained at a predetermined value. However, in a normal linear passenger conveyor, since the pitch of the elements constituting the left and right tread chains 4 is the same, uneven elongation of the left and right tread chains 4 is relatively rare.
The situation is different for curved passenger conveyors. In other words, in the curved passenger conveyor, the pitches of the elements constituting the left and right tread chains 4 are different (large on the outside and small on the inside), so
Non-uniform elongation is likely to occur. Therefore, the driven chain gear 6a is likely to deviate from its theoretical position due to non-uniform elongation of the tread chain 4.

[Summary of the invention]

The present invention improves the above-mentioned problems by constructing a support body that supports the driven chain gear from a guide member that supports the driven chain gear and a connecting member that connects both ends of the guide member to each other. A driven chain gear device for a curved passenger conveyor that constitutes a highly rigid support body, always maintains the position of the driven chain gear shaft at an appropriate position relative to the guide rail, and enables smooth reversal guidance of the treadle. The purpose is to provide.

[Embodiments of the invention]

FIGS. 1, 3, and 4 are diagrams showing an embodiment of the present invention.

In the figure, 4A and 4B are treadle chains, and 6A and 6B are shafts 6a.
A driven chain gear 7 is fixedly attached to a driven chain gear 6A,
A support body consisting of a rectangular frame that surrounds the shaft 6B and supports the shaft 6a, and includes guide members 7A and 7B that support both ends of the shaft 6a and are orthogonal to the shaft 6a, and these at their front and rear ends. It is composed of connecting members 7C and 7D that engage with each other. 8A, 8B
are tension rods 9A and 9B pivotally connected to the connecting member 7C;
10A is a push spring that urges the tension rods 8A, 8B in the direction in which tension is applied to the tread chains 4A, 4B, and 10A is the main frame 1.
A linear inner guide rail 10B is fixed to the main frame 1 and is arranged parallel to the guide member 7A, and is also fixed to the main frame 1 and faces the guide member 7B, and has a curvature approximately the same as the center line A of the passenger conveyor on its upper surface. an outer guide rail having a curved groove 10Ba formed in a curved line with a center;
11A and 11B are rollers that are attached to the guide member 7B and roll on the wall of the curved groove 10Ba of the outer guide rail 10B; 12A and 12B are rollers that are attached to the guide member 7A and roll on the upper surface of the inner guide rail 10A;
12C and 12D are rollers mounted on the guide member 7B and rolling on the upper surface of the outer guide rail 10B.

That is, the support body 7 is pulled by the push springs 9A, 9B via the tension rods 8A, 8B, and tension is applied to the tread chains 4A, 4B. At this time, the rollers 12A and 12B roll on the upper surface of the inner guide rail 10A, and the rollers 12C and 12D roll on the upper surface of the outer guide rail 10B. In addition, the roller 11
A, 11B are curved grooves 10 of the outer guide rail 10B
Rolling down the wall of Ba. These guide the movement of the frame 7, that is, the step chain gears 6A, 6B,
The tension of the tread chains 4A, 4B is maintained at a predetermined value.

Since the support body 7 is formed into a rectangular shape as described above, it has high rigidity, and even if a horizontal force is applied to the rollers 11A, 11B due to uneven extension of the tread chains 4A, 4B, the support body 7 will not be deformed. It is possible to minimize the That is, the main shaft 6a due to the horizontal force
The change in the angle formed by the guide members 7A and 7B can be suppressed within the limit angle. In this way, it is possible to always maintain the position of the shaft 6a at an appropriate position by connecting it to the guide rails 10A and 10B, and the tread plate 7
A smooth reversal can be expected.

〔Effect of the invention〕

As described above, in the present invention, the support body supporting the driven chain gear of the curved passenger conveyor includes a guide member that supports both ends of the shaft of the vertical chain gear and intersects with the axis, and a front end portion of the guide member and a support body that supports the driven chain gear of the curved passenger conveyor. Since the rear end is constructed with a connecting member that connects to each other, the support body can be constructed with high rigidity, and the driven chain gear shaft is always held in the appropriate position by the guide rail, and the treadle can be smoothly reversed. be able to.

[Brief explanation of drawings]

FIG. 1 is a front view of the curved passenger conveyor, FIG. 2 is an enlarged view of the tension device on the lower floor of FIG. 1, and FIG. 3 is an embodiment of the driven chain gear device of the curved passenger conveyor according to the present invention. This is a plan view showing - in Figure 1.
FIG. 4 is a view taken from the - line in FIG. 1. In the figure, 3 is a treadle, 4A and 4B are treadle chains, 5 is a drive unit, 6A and 6B are driven chain gears, 6a is the same left shaft,
7 is a support body, 7A, 7B are guide members, 7C, 7D
is a connecting member, and 9A and 9B are compression springs. In addition,
The same reference numerals in the figures indicate the same parts.

Claims (1)

[Claims] 1. A large number of treads arranged in an arc shape, each connected to an endless tread chain, is driven by one of the reversing parts of the tread chain, and the other part of the reversing part is guided by a driven chain gear. , wherein the driven chain gear is supported by a support body, and the support body is biased in a direction to apply tension to the tread chain, wherein the support body supports both ends of the shaft of the driven chain gear. A driven chain gear device for a curved passenger conveyor, characterized in that it comprises a guide member that intersects the axis, and a connecting member that connects the front end and rear end of the guide member to each other.