JPS60232388A - Main frame for 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 [Technical Field of the Invention] Conventionally, as shown in Japanese Utility Model Application Laid-Open No. 58-140997, a curved escalator in which steps move in a spiral manner is known. Such a curved escalator will be explained with reference to FIGS. 1 to 5.

As shown in FIG. 1, the conveyance path 2 of the curved escalator along which the 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. 2.

It's a trench, and in the side projection, the upper and lower horizontal running parts 2
11.21), an intermediate inclined part 2e is provided via the upper and lower parts 2c and 2d. Figure 1.

As shown in FIG. 3, the step 1 is connected to an endless step chain 4 housed in the main frame 3, and the step chain 4 extends from the upper and lower ends 3m of the main frame 3.

The chain gear 5a is meshed with the chain gears 5m, 5m of a step reversing device 5.6 installed in the machine room in the machine room 3b.

6m are fixed to the main shafts 5b, 6b of the reversing devices 5, 6, and one main shaft 5b, 6b is rotatably supported by the main frame 3. A drive device @7 is provided in the machine room in the upper end 3a of the main frame 3, and the drive device 7 is connected to a drive chain 7b from a drive electric motor 7a.
The driving force is transmitted to the chain gear 7c provided on the main shaft 5b of the reversing device 5 at the upper end 3a.

The reversing device 5 at the upper end 3a of the main frame 3 is provided with a braking device 8 for braking the rotation of the main shaft 5b, and this braking device 8 includes a ratchet wheel 8a and the like. Then, the step chain 4 is driven by the driving device 7 via the reversing device 5, so that the step 1 moves along the conveyance path 2 and the handrail 9 moves.

In such a curved escalator, the step 1 moves along the conveyance path 2 along an arcuate curve with a constant radius of curvature in the horizontal projection plane, so the main frame 3 moves as shown in FIG. It has a curved line following the conveyance path 2 or a polygonal horizontal projection surface that approximates this curve, and has both horizontal end portions 3a, 3b and an intermediate space between them, as shown in FIGS. It is configured in a shape having a side projection surface consisting of an inclined part 3c, and is supported by a building by a support part 10.

However, since the main frame of the conventional curved escalator had the shape of the horizontal projection plane described above, 5. There was a problem with the installation of the drive device 7, etc.

That is, in the machine room within the upper end portion 3a of the main frame 3.

The chain gear 5' + main shaft 5b of the reversing device 5 is stored.

The chain gear 7c of the drive device 7 and the ratchet wheel 8a of the brake device 8 are provided on the main shaft 5b, and the electric motor 7a of the drive device 7 and the drive chain 7b that transmits driving force from it to the chain gear 7c are connected to the reversing section of step 1. It is placed on the end side of the main frame 3.

For this reason, the chain gear 7c, the drive chain 7b, the electric [J7
It is necessary to arrange the motor 7a in a straight line and the electric motor 7a at right angles to the main shaft 5b, but these arrangements are difficult. If the electric motor 7a cannot be arranged at right angles to the main shaft 5b, it is necessary to bend the path of the drive chain 7b.

Furthermore, as shown in FIGS. 4 and 5, the main frame 3 is supported by providing support portions 10 at a plurality of locations in the longitudinal direction at both ends and in the middle of the escalator.

Depending on the curvature of the horizontal projection plane, a line connecting the supporting parts (third
The dotted line in the figure) also protrudes to the outer periphery, and this shifts the center of gravity, creating a moment that twists the entire escalator.
With conventional escalators, there is a large amount of protrusion, so the force required to twist the escalator is also large.

There is a problem that it is disadvantageous in terms of strength.

[Summary of the invention]

This invention was made by focusing on the fact that in a one-curve escalator, the steps only need to move along the conveyance path along a curve, and that the main frame of any shape can be used outside the conveyance path. By extending the end on the side closer to the target in a direction perpendicular to the main axis of the reversing device, the above-mentioned problem can be solved and the installation of a drive device etc. in the end of the main frame can be facilitated. The present invention aims to provide a main frame for a curved escalator that has an advantageous main frame in terms of strength.

[Embodiments of the invention]

An embodiment of the present invention will be described below with reference to FIGS. 6 to 9.

In the figures from FIG. 6 to FIG. 9, the same reference numerals as those in FIGS. 1 to 5 indicate the same or corresponding parts. Both ends 3a,
3b is the main shaft 5b of the reversing device 5.6.

6b, and the number of supporting parts 1o to the building at the middle part of the main frame 3 is reduced to form a supporting part 1o at the upper end and a supporting part at the intermediate part adjacent thereto. 10.

The main frame 3 of the curved escalator according to this embodiment is as follows.

The end side of the reversing device 5.6 is connected to these main shafts 5b, 5b.
5.6 If it is extended in the direction perpendicular to
The shaft of the electric motor 7a of the drive device 7 is connected to the main shaft 5b of the reversing device 5 by effectively utilizing the machine room formed in both ends 3a, 3b of the main frame 3 on the end side, especially the machine room in the upper end 3a. The driving chain 7b can be easily arranged parallel to the longitudinal direction of the truss at the upper end 3a, that is, at right angles to the main shaft 5b.

Therefore, the driving device 7 and the braking device 8 can be easily installed.

Further, in this embodiment, both ends 3a of the main frame 3.

Since the planar shape of 3b is linear, the amount of protrusion beyond the line connecting the support portions of the main frame to the outer circumferential side can be reduced if the support portions are provided in the same way as in the conventional two-way structure.

This is advantageous in terms of the strength of the shaft 1, since the screw thread caused by the shift of the center of gravity due to the above-mentioned protrusion is small. And main frame 3
The distance between the support part 10 at the upper end and the support part 10 at the intermediate part adjacent thereto is increased.

The number of support parts 10 can be reduced at the same floor height as before by making it possible to obtain a line connecting the support parts 10 shown in the nodal line in FIG. 7, and the space above and below the escalator can be expanded. This allows for a variety of layouts for single-curve escalators.

Note that the present invention can also be applied to a curved escalator in which the radius of curvature of the horizontal projection plane is different in the intermediate inclined part, the upper and lower curved parts, the -F part, and the lower horizontal part.

〔Effect of the invention〕

As explained above, in this invention, the end of the main frame on the side closer to the step reversing device is extended in a direction perpendicular to the main axis of the reversing device. In addition, the main frame can be made stronger in terms of strength, and the number of supporting parts of the main frame can be reduced.

[Brief explanation of drawings]

Figure 1 is a front view showing an example of a conventional curved escalator;
Fig. 2 is an open plan view, Fig. 3 is a plan view of the main parts, Figs. 4 and 5 are developed views of the outer and inner surfaces of the truss of the main frame, and Fig. 6 is an embodiment of the present invention. A plan view of a curved escalator having a main frame according to an example, FIG. 7 is a plan view of the main part, and FIGS. 8 and 9 are developed views of the outer and inner surfaces of the truss of the main frame. 1...Step, 2...Transport path, 3...Main frame-3
a. 3b...End m-4...Step chain, 5,6°
°° step reversing device, 5b, 6b... main shaft, 7...
・Drive device-78...Electric motor-7b...Drive chain-7c...Chain gear, 8...Brake device-10...
Support part. In addition, the same parts or corresponding parts in FIG. 1 are indicated by the same reference numerals. Agent Masuo Ookimi (2 others) Figure 1 Figure 5 Figure 4 Figure 7

Claims (1)

[Claims] 1. A main frame of a curved escalator, characterized in that the end of the step on the side of the reversing device extends in a direction perpendicular to the main axis of the reversing device.