JPS60232389A - 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] rTechnical field of invention] This invention relates to a curved escalator.

[Prior art]

2. Description of the Related Art A curved escalator in which steps move in a spiral manner is known, for example, as shown in Japanese Patent Publication No. 48-25559. Such a curved escalator will be explained with reference to FIGS. 1 to 3.

As shown in FIG. 1, in the curved escalator, a conveyance path 2 along which a step 1 moves is formed in a spiral shape, and in a horizontal projection plane, it is formed in an arc shape as shown in FIG.

The step 1 is connected to an endless step chain 4 housed within the main frame 3, and is driven together with a handrail 5 by a drive device 6. In this case, the step chain 4 is moved along a spiral curve, and the tension of the chain 4 acts as a center force in the radial direction.

Therefore, in order to bear this mental stress, side rollers are provided as shown in FIG. In Figure 3.

The same reference numerals as in FIGS. 1 and 2 indicate the same parts, 7 is a step shaft provided in the step 1, and both ends of the step shaft 7 are connected to the step chain 4.

Inner and outer drive wheels 8.9 are attached to the part of the step shaft 7 that protrudes from the step chain 4, and the side rollers 11 of the vertical shaft are attached to the part of the step shaft 7 that protrudes from the outer drive wheel 9 via a bracket 10. It is installed. driving wheel 8
, 9 and the side rollers 11 are fixed to the main frame 3 and are connected to the outgoing path 211 . It is supported by rails 12, 13 and 14 extending in the longitudinal direction of the return path 2b, respectively, so as to be freely movable. The force acting on the step chain 4 in the horizontal direction of the cross section of the main frame 3 due to the centripetal force is received by supporting the side rollers 11 on the rails 14.

Such a curved escalator requires some members such as the side rollers 11, and the steps 1 and handrails 5 move along the conveyance path 2 along a curved trajectory. For this reason - similar to a normal straight escalator in which the main equipment in the main frame is symmetrical, in a conventional curved escalator in which the main frame 3 is arranged symmetrically with respect to the center 15 of the trajectory of step 1, the width of the escalator Another problem is that the width of the main frame 3 is wider than that of a straight escalator.

[Summary of the invention]

This invention focuses on the fact that the side rollers required for a one-curve escalator can be functionally installed on either the left or right side of the step. The above-mentioned problem was solved by eliminating the wasted space between the frames and arranging the left and right sides of the main frame asymmetrically with respect to the trajectory of the steps.
This is an attempt to provide a curved escalator with a shortened main frame width.

[Embodiments of the invention]

An embodiment of the present invention will be described below with reference to FIGS. 4 to 8.

4 to 8, the same reference numerals as in FIGS. 1 to 3 indicate the same or equivalent parts, 16 is the center in the width direction of the main frame 3, and the step 1 By locating the center 15 of the trajectory on the inner circumferential side as shown in FIG. However, the width of the main frame 3 is shortened. As shown in FIGS. 5 to 7, the truss of the main frame 3 consists of upper and lower chord members 17. It is composed of a cross member and a diagonal member 21.

Generally, in a curved escalator, the escalator extends outward from the periphery of the line connecting the fulcrums (the chain line in FIG. 5) depending on the curvature of the escalator, but in the case of the curved escalator of the embodiment configured as shown in FIG.

Center 16 of main frame 3 relative to center 15 of the trajectory in step 1
Since the inner truss width is narrower than the outer truss width by placing it on the outside, the center of gravity of the one-curve escalator is located on the inner circumference side of the truss center of gravity.

This is preferable in terms of the strength of the main frame 3, since the force that twists the entire escalator, which is unique to curved escalators, can be alleviated. Furthermore, since the width of the main frame 3 is shortened, the total width of the one-curve escalator can be narrowed, making the whole slim and the members lightweight.

Note that the present invention can also be applied to a curved escalator in which the radius of curvature of the horizontal projection surface is different at the intermediate inclined portion, the upper and lower surface portions, and the upper and lower horizontal portions.

〔Effect of the invention〕

As explained above, the present invention arranges the left and right structural surfaces of the main frame asymmetrically with respect to the center of the locus of the step, eliminates wasted space on the side of the step where no side rollers are provided, and eliminates wasted space in the main frame. Since the width of the escalator is reduced by reducing the width of the escalator, it is possible to provide a curved escalator whose members are lighter by the narrower width and the cost of manufacturing and installation is reduced.

[Brief explanation of drawings]

Figure 1 is a front view showing an example of a conventional curved escalator;
Fig. 2 is a cross-sectional view, Fig. 3 is an enlarged cross-sectional view of the main frame, Fig. 4 is a plan view showing a curved escalator according to an embodiment of the present invention, and Fig. 5 is a plan view of the truss of the main frame. 6 and 7 are developed views of the outer and inner surfaces of the truss, and FIG. 8 is an enlarged cross-sectional view of the main frame. 1... Step, 2... Conveyance path, 3... Main frame, 1
1... Side roller, 15... Center of step locus, 16... Center of main frame. In addition, the same parts or corresponding parts in FIG. 1 are indicated by the same reference numerals. Agent Masuo Oiwa (2 others) Figure 1 Figure 2 Figure 3 Figure 4m

Claims (1)

[Claims] A curved escalator characterized by the left and right sides of the main frame being arranged asymmetrically with respect to the center of the trajectory of the steps.