JPS59230983A - Guide rail for step shaft of curve escalator - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an improvement of a step shaft guide rail for a curved escalator.

First, a conventional curved escalator will be explained with reference to FIG. In Fig. 1, 1 is a conveyance path, and this conveyance path 1 has a slope part A that is inclined at a constant angle in the vertical direction as the middle, and the slope part A changes its inclination angle on both the upper and lower sides. Part I,
Two upper and lower horizontal parts are formed through the upper and lower horizontal parts, and a reversing part and a part connecting the outbound and return routes are formed at both ends of these parts, and the horizontal projection plane is formed into a curved semicircle. 2 is a large number of fan-shaped steps that move along the conveyance path 1; 3 is a parapet erected on the main frame 4 along the longitudinal direction of the conveyance path 1; and 5 is supported by the parapet 3 and driven in synchronization with the step 2. It is a moving handrail.

The conventional curved escalator as described above is configured to support and guide fan-shaped steps with guide rails having a constant radius of curvature. However, in a curved escalator, the inclination angles of the outer guide rail and the inner guide rail are different, so if the radius of curvature of the guide rail is constant as described above, in order to equalize the angular velocity of the inner and outer circumference of the fan-shaped step, It is necessary to change the spacing between the step axes that connect the adjacent steps to the step chain in parts where the inclination angle changes, such as the upper and lower convex parts A and A, and for this purpose, the structure is The problem is that it gets complicated.

Therefore, the applicant of this invention formed the guide rail to have a constant radius of curvature at the entire middle inclined part, and the upper part of the guide rail.

We proposed a method in which the radius of curvature increases as the inclination angle decreases in the lower curved part, and a constant radius of curvature that is larger than the radius of curvature in the horizontal part. We have previously proposed a curved escalator that does not require changing the distance 11iI between step axes and has a simple structure (see Japanese Patent Application No. 57-183315).

This invention further improves on the applicant's previous proposal by arranging a return guide rail with a projected planar shape that is almost the same as that of the outward guide rail when viewed from above the main frame. To provide a step shaft guide rail for a curved escalator that is narrow in width and easy to manufacture.

An embodiment of the present invention will be described below with reference to FIGS. 2 to 4. In these figures, the same reference numerals as in FIG. 1 indicate the same or corresponding parts, 6 and 7 are the outer outgoing side and return side guide rails, 8 and 9 are the inner outgoing side and return side guide rails, and 1.
0 is a step shaft provided on the fan-shaped step, 11 is a drive roller rotatably fitted to the step shaft 10 and rolls on the guide rail 6.7°8.9, and 12 and 13 are the step shafts 10. Endless outside, connecting the above steps through
Inside step chains, 14 and 15 are the above chain 1
2 and 13 are the outsides hung by the upper inversion work.

This is the inner chain drive sprocket. Although not shown, the chains 12 and 13 are hung on a chain sprocket having a tensioning device at the lower inverted portion. Reference numeral 16 denotes a restraining rail that is disposed above the upper horizontal portion of the inner return-side guide rail 9 to prevent the driving roller 11 from floating, and is also provided above the lower horizontal portion.

In this embodiment, by driving the drive sprockets (14, 15'i) in forward and reverse directions using a drive device (not shown), the fan-shaped steps are raised and lowered via the step chains 12, 13, and the step axes, and the outer drive Since the sprocket 14 has a larger diameter than the inner driving sprocket 15, it absorbs the difference in angular velocity between the outer and inner step chains 12, 13 and the fan-shaped step.

Further, in the slope part A having a constant inclination angle, the return side guide rail 7.9 is arranged directly below the outbound side guide rail 6.8 for both the outer guide rail 6j7 and the inner guide rail 8.9, and the outer guide rail 6. .7, inner guide rail 8.9 is 02
It is formed to have a radius of curvature of R1 and R2 centered at . At the upper horizontal part, the outer and inner outbound guide rails 6.8 are R11.8 with 01 center. With a radius of curvature of B/2.

The return side guide rail 7.9 is R'j centered on 01
, is provided in the section D1D5JE1E2E3 with a radius of curvature of R'2. Note that the inner outbound and return guide rails 7.9 are B1B2. In the section B1B2, there is a slight slope approaching the end of the drive sprocket (15). At the upper curved part A, the outer and inner outward guide rails 6.8
The center changes from 02 to 01 and the radius of curvature changes from R1 to R/
, , R12 changes to R'2 and becomes A, 5A4,
It is curved in the B3B4 section and is on the outside.

The outer and inner return guide rails 7.9 are arranged vertically below the inner outward guide rail 6.8, and the centers of these rails change from 02 to 01, and the radius of curvature changes from R1 to "j h R.
2 to R'2 and is curved in the section of B5B4 h "3E4.The radius of curvature is R'+
> R1, R'2) Formed in R2, the center of the radius of curvature is 03, which is opposite to 01, compared to 02 even in the horizontal part and lower curved part of the upper end, and the horizontal part and upper curved part of the upper end as described above. Similarly to the section, outer and inner return guide rails are provided directly below the outer and inner outbound guide rails. In addition, in Figures 3 and 4, D is the depth of the main frame 4, FIFl h F
2F2 is the vertical center line along the longitudinal direction of the step chains 12 and 13, and θ1. θ2 is the guide rail 6.7.8
．． As mentioned above, the guide rail of this embodiment has outer and inner outgoing guide rails 6 and 8 directly below these and outer and inner return guide rails whose projected planar shapes are approximately the same. 7.9, the outbound and return guide rails are almost vertically symmetrical on both the inside and outside, making it easy to manufacture these rails. Furthermore, since the outbound and return guide rails are not misaligned when viewed from above, the width of the main frame, that is, the escalator is small, and the space required for its installation is small. Furthermore, above.

There is no need to change the distance between the step axes even in the downward direction, and the structure of the curved escalator can be simplified. Therefore, according to this embodiment, a curved escalator can be provided at low cost.

In this embodiment, the driven rollers are provided at different positions in the step movement direction from the drive roller of the fan-shaped step, and the driven roller is also supported and guided by the guide rail. Since it is placed at the center in the width direction, there is no problem of increasing the width of the main frame.

As explained above, the present invention has the following features:
It is equipped with a conveyance path having a horizontal portion with a radius of curvature larger than the radius of curvature of the inclined portion on both lower sides, and a large number of fan-shaped steps that move along this conveyance path.

In a curved escalator in which the step axes of these steps are connected to the outer and inner step chains, and the step axes are supported and guided by the guide rail, there is a projection plane shape that is approximately the same as these directly below the outgoing guide rail. Since equal return-side guide rails are provided, the width as seen from above the main frame is narrow without losing the above-mentioned advantages of the curved escalator, so the installation space can be reduced, and the guide rails can be manufactured easily. There is an effect.

[Brief explanation of drawings]

Fig. 1 is a schematic front view showing a conventional curved escalator, Fig. 2 is a plan principle view showing a curved escalator equipped with a step axis guide rail according to an embodiment of the present invention, and Fig. 3 is a diagram of the outside guide rail section. Developed side principle view showing the upper part, No. 4
The figure is a developed side view showing the upper part of the inner guide rail section. 1... Conveyance path, 2... Fan-shaped step, 4... Main frame, 6.7... Outside outgoing side, return side guide rail, 8°9... Inner outgoing side, return side Guide rail, 10...
Step shaft, 11... Drive roller, 12, 13...
・Step chain, 14, 15... Drive sprocket. Note that the same or corresponding parts in the figures are indicated by the same reference numerals. Agent Masuo Oiwa (2 others) t1 Seki? 2. Figure Procedure Sleeve Measurement (Spontaneous) Showa Re June 2 'L1 2. Title of Invention Step Axis Guide Rail of Curved Escalator; 3. To Katayuni, representative of the person making the amendment, Part 5, Subject of amendment (1) Drawing 6, Contents of amendment (1) Figure 4 of the drawing shall be amended in the attached document. 7. Attached documents (1) One amended drawing

Claims (1)

[Claims] It is equipped with a conveyance path having horizontal parts with a radius of curvature larger than the radius of curvature of the inclined part on both sides of the upper and lower sides of the intermediate inclined part, and a large number of fan-shaped steps that move along this conveyance path, and the step axes of these steps. In a curved escalator in which the step shafts are connected to the outer and inner step chains, and the step shafts are supported and guided by the guide rails, a return guide rail is provided directly below the outbound guide rail and has a projected planar shape that is approximately the same as these. A step axis guide rail for a curved escalator characterized by the following: