JPH0211511B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Technical Field of the Invention] This invention relates to a curved escalator.

[Prior art]

A prior art curved escalator proposed by the applicant of the present invention will be explained with reference to FIGS. 1 and 2.

In Figures 1 and 2, 1 is the main frame of the curved escalator, 2 is a conveyance path configured in the main frame 1, and the conveyance path 2 has an intermediate slope that slopes upward and downward at a constant inclination angle. Upper and lower horizontal sections 2c are provided on both sides of the section 2a via upper and lower curved sections 2b, and upper and lower inverted sections 2d connect the outward and return routes at the ends of these horizontal sections 2c. are continuous, and the horizontal projection plane is curved into an arc with the same radius of curvature. 3 is a step with a fan-shaped plane;
A large number of steps 3 are arranged in succession on the conveyance path 2. Reference numeral 4 designates an endless inner and outer step chain that connects the step shafts provided on the steps 3 and is arranged along the conveyance path 2, and 5 represents a drive device provided at the upper part of the main frame 1. The drive device 5 moves the step chain 4 to the conveyance path 2 via the winding transmission mechanism 5b by driving the drive machine 5a.
It is configured to rotationally drive the chain gear 5c meshed with the upper inverted portion 2d. 6 is provided at the lower part of the main frame 1, and a step chain 4 is provided at the upper inversion part 2d of the conveyance path 2.
7 is a balustrade that is erected on the main frame 1 and placed on the side edge along the longitudinal direction of the conveyance path 2; 8 is movably engaged with the peripheral edge of the balustrade 7 on the outbound side; It is an endless handrail.

The curved escalator configured as above is
The steps 3 are circulated through the conveyance path 2 via the step chain 4 by driving the drive device 5 .

In such a curved escalator, the steps 3 move in a vertical plane in the inverted section 2d of the conveyance path 2, rotate in a horizontal plane in the horizontal section 2c, and rotate in the horizontal plane in the intermediate inclined section 2.
a, rotates within the inclined plane at the curved portion 2b. On the other hand, the tread of the step 3 must always be moved horizontally at least on the outward journey, but the roller attached to the step,
If the guide rails that support and guide these were constructed in the same way as a normal straight escalator,
There is a drawback that the circular movement of the steps cannot be carried out stably, and there is a desire to improve this drawback.

[Summary of the invention]

This invention connects a step shaft to a three-dimensionally bendable step chain, and also includes a guide roller that receives a radial component of the tension of the step chain on a mounting bracket pivotally supported on the inner or outer end of the step shaft. By pivotally supporting drive rollers arranged in pairs on both sides of this roller, stable and smooth movement of the steps on the outbound path of the transport path can be achieved in response to the above-mentioned needs, and the curved line has less wear on the guide rollers. The purpose is to provide escalators.

[Embodiments of the invention]

An embodiment of the present invention will be described below with reference to FIGS. 3 to 6.

In the figures from FIG. 3 to FIG. 6, the same reference numerals as in FIGS. 1 and 2 indicate the same or corresponding parts, and 9 is a mounting bracket, and the mounting bracket 9 is one end of the step 3 in the front and back direction. The step shaft 10 is provided at the outer end of the step shaft 10 provided along the radial direction of the conveyance path 2, and is pivotally supported via a radial bearing 11 and a thrust bearing 12 so as to be rotatable around the step shaft 10 but immovable in the axial direction. In addition, the mounting bracket 9 has a step shaft 10 rotatably penetrated through it.
It is arranged on the outside of the outer step chain 4 which can be bent in the dimension direction. The guide roller 1 is attached to the mounting bracket 9 above.
3 is rotatably supported around a shaft 14, and the shaft 14 is disposed on an extension of the step shaft 10 so as to be perpendicular thereto. Furthermore, the guide roller 1 is attached to the mounting bracket 9.
A pair of outer drive rollers 15 are rotatably supported on the front and rear sides of the step shaft 16 about a shaft 16, and the shaft 16 is disposed parallel to the step shaft 10. Step axle 10-3
An inner drive roller 17 is attached to the inner end protruding from the inner step chain 4 which can be bent in the dimension direction so as to be rotatable around the step shaft 10, and driven rollers 18 are mounted on both sides of the other end of the step 3 in the front and back direction. The driven roller 18 is mounted so as to be rotatable about an axis parallel to the step shaft 10, and the driven roller 18 is disposed closer to the center of the step 3 in the width direction than the drive rollers 15 and 17. inner and outer drive rollers 15;
17. The driven rollers 18 are rotatably supported by guide rails 19, 20, and 21 that are parallel to the conveyance path 2, respectively, and the guide roller 13 is integrated with the guide rail 19 of the outer drive roller 15 and is perpendicular to the guide surface thereof. It is rotatably supported by a guide rail 22 provided with a guide surface. Above guide rail 1
9, 20, 21, and 22 are fixed to the main frame of the curved escalator. Note that the configuration of this embodiment other than that described above is the same as that of the curved escalator shown in FIGS. 1 and 2.

In the curved escalator, the steps 3 circulate through the conveyance path 2 as described above, and the tread surface of the steps 3 must always be moved horizontally at least on the outward journey, so it is necessary to move the step shaft 10 horizontally. be. Therefore, the step shaft 10 of each step 3
The three-dimensionally bendable inner and outer step chains 4, which are connected to the step shaft 10, can bend in any direction in the space with respect to the step shaft 10, and receive a component force in the radial direction of the conveyance path due to the movement of the step shaft 10. The guide roller 13 that determines the direction of movement of the step shaft 10 is also required to be oriented in any direction with respect to the step shaft 10. In the intermediate inclined section 2a of the conveyance path 2, the inclination angle of the guide roller 13 disposed at the outer edge of the step shaft 10 and the inclination angle of the step chain 4 are expressed as in the following equation.

R ₁ tanθ ₁ = R ₂ tanθ ₂ = R ₃ tanθ ₃ where R ₁ , R ₂ , and R ₃ are the radius of curvature of the inner step chain, outer step chain, and guide roller θ ₁ , θ ₂ , and θ ₃ are the inner step chain , the inclination angle of the outer step chain and guide roller.

Then, as shown in FIG. 4, the radius of curvature R ₁ ,
Since R ₂ and R ₃ are different, the inclination angles θ ₁ , θ ₂ and θ ₃ are different. However, in the horizontal section 2c, the step shaft 10 only moves horizontally, so the inside
The inclination angle of the outer step chain and guide roller is θ ₁ = θ ₂ = θ ₃
=0 matches. To explain this with reference to Fig. 3, the horizontal section 2c is a plane formed by A ₁ A ₂ B ₁ B ₂ , and the inclination angle of the inner and outer step chains and guide rollers is 0, but the slope angle of A ₂ A ₃ B ₃ B ₂ , the inclination angles θ ₁ , θ ₂ , and θ ₃ are different from each other. Therefore, the connecting portions of the inner and outer step chains 4 and the guide roller 13 to the step shaft 10 are required to be freely rotatable with respect to the step shaft 10.

In the curved escalator of one embodiment of this invention,
As described above, the mounting bracket 9 is attached to the outer end of the step shaft 10 so as to be rotatable around the axis.
The guide roller 13 is connected to a shaft 14 perpendicular to the step shaft 10.
The outer drive rollers 15 are arranged perpendicularly to the guide roller 13 in pairs, and the two outer drive rollers 15
This controls the attitude of the mounting bracket 9, thereby regulating the angle of inclination of the guide roller 13.
The guide roller 13 is therefore the outer drive roller 1
By giving the guide rail 19 of No. 5 a predetermined inclination angle, it becomes possible to orient it in any direction with respect to the step shaft 10. Therefore, the guide roller 13 receives the radial component of the tension of the step chain 4, and can satisfy the above-mentioned requirements for the step shaft 10 of the curved escalator, keeping the step shaft 10 horizontal on the outbound path of the conveyance path 2. That is, the step 3 can be moved stably and smoothly while keeping the tread horizontal.

Further, in this embodiment, the outer drive roller 15 and the transfer surface of the guide rail 19 are configured so that the transfer surface of the guide roller 13 and the guide rail 22 has the same radius of curvature on the horizontal projection plane, so that The inclination angle of the guide roller 22 and the inclination angle of the guide roller 13 can be made to match, so that the step slip of the guide roller 13 can be eliminated and the amount of wear of the guide roller can be reduced.

Further, the step shaft 10 includes the step chain 4, the roller 13,
15, etc., the step shaft 10 is not subject to the twist peculiar to curved escalators, and the step shaft 10 can be made compact.

In this invention, the mounting bracket, the guide roller, and the pair of driving rollers may be provided at the inner end of the step shaft instead of being arranged at the outer end of the step shaft as in the above embodiment.

〔Effect of the invention〕

As explained above, the curved escalator of the present invention includes a three-dimensionally bendable step chain connected to a step shaft, and a mounting that is rotatably supported around the step shaft at the inner or outer end of the step shaft. a guide roller that is rotatably supported on the mounting bracket to be rotatable about an axis perpendicular to the step chain and receives a radial component of the tension of the step chain; By providing a drive roller rotatably supported around parallel axes, the step shaft and the tread surface are ensured horizontally at least on the outbound path of the conveyance path.
This has the effect that the steps can be moved stably and smoothly, and the amount of wear on the guide rollers can be reduced.

[Brief explanation of drawings]

Figure 1 is a schematic front view of a curved escalator, Figure 2 is a schematic front view of a curved escalator;
3 is a schematic perspective view showing the upper part of the conveyance path of a curved escalator according to an embodiment of the present invention, FIG. 4 is a partial plan view of the steps, and FIG. 5 is the outside of FIG. 4. The side view and FIG. 6 are enlarged plan views with some of the essential parts cut away. [Explanation of main symbols] 1... Main frame, 2... Conveyance path,
2a... intermediate slope section, 2b... curved section, 2c... horizontal section, 2d... inverted section, 3... step, 4... step chain, 5...
Drive device, 9...Mounting bracket, 10...Step shaft, 13...
Guide roller, 14... shaft, 15... outer drive roller,
16... shaft, 17... inner drive roller, 18... driven roller, 19, 20, 21, 22... guide rail.
In addition, the same parts or corresponding parts in the figures are indicated by the same reference numerals.

Claims (1)

[Claims] 1. Upper and lower horizontal sections with varying inclination angles are provided on both sides of the intermediate slope section that slopes vertically at a constant slope angle, and the outbound and return paths are connected to the ends of these horizontal sections. In addition, there is an endless conveyance path in which the lower inversion part is continuous and the horizontal projection plane is curved, a large number of fan-shaped steps that circulate through this conveyance path, and a step connected to the step axis of these steps. Three-dimensionally bendable inner and outer step chains that drive the
A mounting bracket is rotatably supported around the step shaft at the inner or outer end of the step shaft, and a mounting bracket is pivotally supported to the mounting bracket to be rotatable around an axis perpendicular to the step shaft to reduce the tension of the step chain. a guide roller that receives a radial component force;
The guide roller of the mounting bracket is characterized by comprising a pair of drive rollers rotatably supported on both sides of the guide roller about an axis parallel to the step shaft, and a guide rail that supports and guides each of the rollers. A curved escalator.