JPS59118679A - Circular 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 This invention relates to a circular escalator, and more particularly to a tensioning mechanism for the step chains thereof.

In a circular escalator, as shown in Japanese Patent Publication No. 48-25559, a main frame having an arc shape is arranged to be inclined in a horizontal projection plane, and an endless conveyance path is formed in the main frame. A large number of steps connected on both sides by step chains are disposed on the conveyance path and are operated in circulation. Additionally, tension is applied to the step chain by a tensioning mechanism installed at the reversing part of the conveyance path, but if the tensioning mechanism applies tension in a straight line in the horizontal projection plane, it is difficult to move the step smoothly. There was a drawback that movement was hindered.

This invention solves the above-mentioned drawbacks and provides a circular escalator equipped with a tensioning mechanism that applies tension along the arc of the conveyance path to the step chain. An example will be described.

In the figure, (1) is the main frame of a circular escalator, which is arranged in an arc shape and inclined in the horizontal projection plane.

(1a) is the upper end of the main frame (1), (1b+ is the lower end, (
2) is a conveyance path composed of a main frame (1)K, with an outgoing path (2a) on the top side of the main frame (11) and a reversing section (2a) at the end of the main frame (1).
b), return paths (2C) are formed on the bottom side of the main frame (1), forming an endless path. (3) is a step with a fan-shaped plane and a large number of steps are arranged in succession on the conveyance path (2), (3a) is a shaft with a longitudinal end arranged in the width direction;
(3b) is the front wheel of the steps (31) pivoted to both ends of the shaft (3a), (3c) is the rear wheel pivoted to the steps (3), and (3cl) is the step (3) K provided. A roller pivotally supported via a shaft perpendicular to the tread surface, (
A) is a front wheel rail fixed to the main frame (1) and provided along the conveyance path (2) to guide the front wheel (3a), and (4a) is a front wheel rail provided inside the circular arc of the conveyance path (2). (4)
(5) is a rear wheel rail fixed to the main frame (1) and provided along the conveyance path (2) to guide the rear wheel (6C); ) is the transport path (
2) Along the conveying path (2), the axis (3) is placed inside the circular arc.
The inner step chain (6f) is disposed along the conveying path (2) on the outside of the circular arc of the conveying path (2), and the inner step chain (6f) is engaged with one end of a).
The outer step chain (7) engaged with the other end of 3a) is provided at the upper end (1a) of the main frame (1) and is disposed at the end (2b) of the conveying path (2).

The chain wheel with the outer step chain wrapped around it, (8) is the main frame (1)
A drive machine that is provided at the upper end (1a) of the chain wheel (7) and drives the chain wheel (7).

(9) is a chain wheel device provided at the lower end (1b) of the main frame (1) and arranged at the end (2b) of the conveyance path (2).
a) is this axis.

(9b) is a small chain wheel that is fixed to the shaft (9a) and has an inner step chain (6) wrapped around it. (9C) is a small chain wheel that is fixed to the shaft (9a) and has an outer step chain (61' wrapped around it). large chain car,
(9d) is a bearing stand that pivotally supports the shaft (9a) and is provided at each end of the shaft.

01 is a guide tool on which a bearing stand (9d) is attached, and the flat surface (1
0a) and an elevational surface (10b), + (100) is a slot provided in the plane (10a) and whose longitudinal axis is arranged in the direction along the axis of the shaft (9a), (10a) is the end surface of the guide Oa. (ioe) is a first end plate fixed at one end to the elevation (10b) and pivoted on a horizontally disposed shaft;
0-L+ (10f) is an L-shaped metal fitting, (10g)
is the first pole inserted into the vertical surface of the metal fitting (10f) and screwed into the vertical surface (10b) of the guide tool 00), (10h)
is screwed into the elevation of the metal fitting (10f), F fitting QOI
(10i) is a shaft that is placed upright on the plane of the metal fitting (10f) and loosely pushed through the slot (10C); (10j) is the shaft (10i) The 20th-La, U held by a 10kl
is fixed to the lower end (1b) of the main frame (1) and
) An inner rail provided along the inside of the circular arc, which has an L-shaped cross section and guides the 10th-ra (108) in a plane,
An end plate (11a) is provided on the end surface of the main frame (1), which guides the 20th frame (10j) on the vertical surface. 01y
(11
'a) is the end plate of this; ).

(It is loosely inserted into the 11th system, and a nut Q31 is screwed into the protruding end. αa is the end plate f11a), (Il'a)
This is a compression coil spring disposed between the U3 and the nut U3 and fitted to the tension bolt D.

That is, both sides of the step (3) arranged on the conveyance path (2) are connected to the inner and outer step chains (61, (GY), and the inner and outer step chains (61, (61') are connected to the conveyor path (2). The upper end of the end is the chain wheel (7).

Wrap the lower end around the chain wheel device (9). And the chain wheel device (9) guide tool uO), inner and outer v-ru (1-D
, (11+') are arranged so as to be displaceable with respect to the main frame (1), and tension bolts α2 and compression coil springs α4
) is biased toward the end of the main frame (1), and tension is applied to the inner and outer steps 6N +6) and (61').Then, when the driver (8) is biased, the chain wheel' (7 ), the inner and outer step chains +61 and (61' are driven) and the step (31
is operated in circulation, and the front wheels (3b) are placed on the front wheel rails (4).

The rear wheel (6C) is mounted on the rear wheel rail (5) and on the roller (3d).
) rolls while being guided by the vertical wall (4a) of the front wheel rail (4). In addition, the chain wheel device (9) includes inner and outer step chains (61,
+6 Due to which elongation, the main frame (1) is displaced toward the end, but at this time the guide tool α0 moves towards the inner and outer rails (II), (
11y, it is displaced along the circular arc of the conveyance path (2). Therefore, the movement path of the step (31) is
be able to move the steps (3) smoothly while maintaining the In addition, in this embodiment, the 20th-ra (
10j), the first bolt (10g), and the second bolt (10g), (10
h) Can be displaced horizontally through slots (10C), inner and outer rails Qll, Qi! The position of the 20th wheel (10j) can be adjusted according to the curvature of ', and the displacement path of the chain wheel device (9) can be made to match the arc of the conveying node (2) with high precision.

As explained above, the present invention provides 9
Provided at the end of the circular arc-shaped and endless conveyance path,
A chain wheel device, on which the step chains provided on both sides 1 of the steps are wrapped around and which applies tension to the step chains, is fixed to the main frame and is displaced by a rail formed in an arc shape along the conveyance path. This is what I did. As a result, even if the step chain stretches, the movement path of the steps can be maintained normally and the steps can be moved smoothly.

[Brief explanation of drawings]

Figure 1 is a conceptual front view of a circular escalator, and Figure 2 is a conceptual front view of a circular escalator.
3 is an enlarged cross-sectional view taken along the line III--III in FIG. 1, showing an embodiment of the circular escalator according to the present invention, and FIG. 4 is a cross-sectional view taken along the lines n and -I'V in FIG. 3. Figure 5 is an enlarged view of the V part in Figure 3, and Figure 6 is the V part of 51\l.
It is a sectional view taken along the line I-Vl. (1)...Main frame, (2)...Conveyance path, (2al・
...Outbound trip, (2b)...Reversal section, (20)...Return trip, (3)...Steps, (6)...Inner step chain. (6Y...outer step chain, (9)...chain wheel device, ασ
. . . Guide tool, (11) . . . Inner rail, . . . Outer rail. Note that the same parts in FIG. Agent Makoto Kuzuno - l 1 ρ Hou Z I'Q pole 4 The affair is also sudden X a

Claims (1)

[Claims] A main frame that is arranged in an arc shape in a horizontal projection plane and inclined, and a main frame that is configured with this main frame so that the outgoing path is on the top side of the main frame, and the inverted part is on the bottom side of the main frame. A return path is formed at each end of the conveyance path to form an endless conveyance path, and a plurality of steps having a fan-shaped plane are arranged in succession on the conveyance path. A step chain provided along the step chain, a chain wheel device provided at the reversing part of the conveyance path and around which the step chain is wound to apply tension to the step chain, and a chain wheel device fixed to the end of the main frame. A circular escalator comprising: a rail that extends in a horizontal projection plane; and a rail that is formed in an arc shape along the conveyance path and guides a guide tool of the chain wheel device.