JPH0214274B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Technical Field of the Invention] The present invention relates to a curved escalator having an arcuate conveyance path in a horizontal projection plane, and particularly to an improvement in the guide structure of steps.

[Prior art]

1 to 3 show a conventional curved escalator, and in the figures, reference numeral 1 denotes a main frame of the curved escalator, which is arranged to form an arc shape and be inclined in a horizontal projection plane. 2 is a conveyance path configured in the main frame 1, with an outgoing path 2a on the upper surface side of the main frame 1;
There is a reversing section 2b at the end of the main frame 1, and a return section 2b at the bottom side of the main frame 1.
c are respectively formed and are configured in an endless shape. Reference numeral 3 denotes a step with a fan-shaped plane and a large number of steps are successively arranged on the conveyance path 2, 3a is a step shaft provided in the width direction of the step 3, and outer drive rollers (not shown) are located near both ends of the step shaft 3a. 1) and an inner drive roller 3b are provided, respectively, and the outer drive roller (not shown) is guided along the conveyance path 2 by an outer rail device (not shown). Reference numeral 4 denotes an outgoing inner drive rail which is fixed to the main frame 1 and guides the inner drive roller 3b along the outgoing path 2a, and 4a indicates an outgoing inner drive rail 4 formed at the end of the transport path 2 on the lower reversing section 2b side. The horizontal portion 4b is an inclined portion that is continuous with the horizontal portion 4a and whose tip is inclined toward the axis of the lower inverted portion 2b.
5 is fixed to the main frame 1 and is connected to the outward inner drive rail 4.
5a is a horizontal portion of the forward inner drive presser rail 5 formed at the end of the lower reversing section 2b side of the transport path 2, and 6 is the main A return inner drive rail fixed to the frame 1 and guiding the inner drive roller 3b along the return path 2c; 6a is a horizontal portion of the return inner drive rail 6 formed at the end of the transport path 2 on the lower reversing portion 2b side; 6b is this horizontal part 6a
7 is an inner drive roller 3b that is fixed to the main frame 1 and guided by the return inner drive rail 6.
The return inner drive presser rail 7a is a horizontal portion of the return inner drive presser rail 7 corresponding to the horizontal portion 6a of the return inner drive rail 6.
b denotes an inclined portion of the return inner drive presser rail 7 corresponding to the inclined portion 6b of the return inner drive rail 6; 8a indicates an outer step chain arranged along the conveyance path 2 and connects the arcuate outer end side of the step shaft 3a; 8b is an inner step chain that similarly connects the arcuate inner end side of the step shaft 3a, 9 is a drive device provided at the upper end of the main frame 1, and 9a is an upper reversal section of the conveyance path 2 of both step chains 8a, 8b. 2b is a chain gear of the driving device 9 which is wound around and driven by the driving device 9b, and 10 is a tensioner provided at the lower reversible portion 2b at the lower end of the main frame 1 to apply tension to both step chains 8a, 8b. A wheel device 10a is an outer chain gear 1 of a tension wheel device 10 around which an outer step chain 8a is wound.
0b is the inner chain gear of the tension wheel device 10, around which the inner step chain 8b is wound, and the outer chain gear 10a.
It is formed with a smaller diameter than the

The conventional curved escalator is constructed as described above, and when the drive device 9 is energized, the chain gear 9a rotates, the steps 3 are driven via the step chains 8a and 8b, and the conveyance path 2 is circulated. At this time, each inner rail 4, 6, which guides the inner drive roller 3b,
At the end of the lower inverted portion 2b side of the horizontal portion 4a,
Slanted portions 4b, 6b, and 7b are provided which are continuous to 6a and 7a, respectively, and the inner step chain 8b is smoothly attached to the inner chain gear 10b having a smaller diameter than the outer chain gear 10a around which the outer step chain 8a is wound at the lower inverted portion 2b. It plays the role of interlocking with the

By the way, the rail of a conventional curved escalator is fixed to the main frame 1, and the structure is such that only the tension wheel device 10 moves along an arc to absorb wear and elongation of the step chains 8a and 8b. There is. In this case, horizontal parts 4a, 5 such as an outer rail device (not shown) of a curved escalator or each inner rail 4, 5, 6, 7 of a straight escalator shown in FIG.
If there is no inclined portion at the ends of a, 6a, and 7a, that is, in front of the reversing portion 2b, there will be no problem even if the inner chain gear 10b moves by the dimension (W), as shown in FIG. 4, for example. do not have.

However, like the inner rails 4, 6, 7 of the curved escalator shown in FIG.
In the case of a rail having inclined portions 4b, 6b, and 7b at the ends of the rail 7a, for example, if the inner chain gear 10b moves by a distance (W), a problem occurs as shown in FIG. 5. That is, there are drawbacks such as the rollers floating off the rails and becoming unstable, or the rollers colliding with the rails instead of moving smoothly, causing vibrations, noise, and equipment damage.

[Summary of the invention]

This invention was made for the purpose of improving such drawbacks, and the end of the inner rail device on the tension wheel device side is separated at the horizontal portion to form a movable inclined rail device, and the inclined rail device and the tension wheel device are made movable. The present invention proposes a curved escalator in which the relative positional relationship between the inclined rail device and the inner chain gear is fixed by connecting the device with a bracket, thereby making it possible to always stabilize the guidance of the steps.

[Embodiments of the invention]

6 and 7 show an embodiment of the present invention, and the same reference numerals as in the conventional curved escalator described above indicate the same or corresponding parts. Reference numerals 11 denote horizontal portions 4a and 6 of the outward inner drive rail 4, the return inner drive rail 6, and the return inner drive presser rail 7;
a, 7a and the inner chain gear 10b, and is formed to be horizontally movable along the arc shape of the conveyance path 2; 11a is the horizontal portion 4a,
The horizontal part 11b of the inclined rail device 11 connected to the ends of 6a and 7a via the recessed joint part 12 is continuous with the end of this horizontal part 11a, and its tip is inclined toward the axis of the inner chain gear 10b. Inclined rail device 11
The inclined portion 13 is a bracket that connects the inclined rail device 11 and the frame 14 of the inner chain gear 10b and fixes the relative positional relationship between the inclined rail device 11 and the inner chain gear 10b.

In the curved escalator configured as described above, even if the inner step chain 8b is stretched due to wear etc. and the frame 14 moves downward by the dimension (W) as shown in FIGS. 6 and 7, the slope The rail device 11 also moves together with the inner chain gear 10a, and the relative positional relationship thereof is always maintained constant. Therefore, the relationship between the lower reversing portion 2c of the conveyance path 2 and the rails 4, 6, 7 immediately before the lower reversing portion 2c and the inner step chain 8b is always constant, and problems unlike the conventional ones do not occur.

〔Effect of the invention〕

As explained above, the present invention includes separating the end of the inner rail device on the tension wheel device side at the horizontal portion to form a horizontally movable inclined rail device, and connecting the inclined rail device and the tension wheel device with a bracket. Since the relative positional relationship between the inclined rail device and the inner chain gear is fixed, the rollers do not float off the rail and become unstable, or the rollers do not transfer smoothly to the rail and collide. This has the effect of constantly stabilizing the guidance.

[Brief explanation of drawings]

Fig. 1 is a front view of a conventional curved escalator, Fig. 2 is a plan view of Fig. 1, Fig. 3 is an enlarged sectional view taken along the - line in Fig. 2, and Fig. 4 shows the lower inverted section of a straight escalator. Figure 5 is a diagram equivalent to Figure 3, Figure 5 is a diagram equivalent to Figure 3 showing the state in which the inner chain gear has moved, and Figure 6 is a diagram equivalent to Figure 3.
The figure is a view corresponding to FIG. 5 showing an embodiment of the present invention, and FIG. 7 is a sectional view taken along the line -- in FIG. 6. 1: Main frame, 2: Conveyance path, 2a: Outward path, 2b: Reversing section, 2c: Return path, 3: Steps, 3a: Step axis, 3
b: Inner drive roller, 4: Outbound inner drive rail,
4a, 5a, 6a, 7a, 11a: horizontal part, 5:
Outbound inner drive rail, 6: Return inner drive rail, 7: Return inner drive rail, 8a: Outer step chain, 8b: Inner step chain, 10: Tension wheel device, 1
0a: Outside chain gear, 10b: Inside chain gear, 11:
Inclined rail device, 11b: Inclined portion, 12: Recessed joint portion, 13: Bracket, 14: Frame. In each figure, the same reference numerals indicate the same or corresponding parts.

Claims (1)

[Claims] 1 A main frame that forms an arcuate shape in a horizontal projection plane, is arranged at an angle, and has an outgoing path on the top surface side, an inverted portion on the longitudinal end, and a return path on the bottom surface side, forming an endless conveyance path, and a flat surface. A large number of fan-shaped steps are successively arranged on the conveyance path and guided along the conveyance path, and each step has an outer drive roller and an inner drive roller extending in the width direction thereof and near both ends thereof. A step shaft, an outer step chain and an inner step chain that are arranged on both sides of the step and connect each step, and an outer chain gear and an inner step chain that are provided in the reversing part and around which the outer step chain is wound. a tension wheel device each having an inner chain gear to apply tension to both step chains; and an outer rail device that guides the outer drive roller along a conveyance path and has a horizontal portion at an end on the tension wheel device side. an inner rail device that guides the inner drive roller along the conveyance path and has a horizontal portion at an end on the tension wheel side; and an inner rail that is horizontally movably disposed between the inner rail device and the inner chain gear. Outgoing and return side horizontal parts that are permanently connected to the outgoing and return side horizontal parts of the device via phase-notched joints, and each inclined part that is continuous with these and whose tip is inclined toward the axis of the inner chain gear. 1. A curved escalator comprising: a sloped rail device having a slanted rail device; and a bracket that connects the sloped rail device and the tension wheel device and fixes the relative positional relationship between the sloped rail device and the inner chain gear.