JPH04308182A - Railing for escalator - Google Patents

Abstract

PURPOSE:To provide a railing structure reducing the traveling resistance of the handrail of a slim type escalator and the like. CONSTITUTION:A roller base 22 with double rollers 24 is provided between resin guides 11a, 11b on a flanged frame 12 fitted at the upper edge of a railing panel, and a handrail at a reversed circular arc section is guided by the double rollers 24.

Description

[Detailed description of the invention]

0001

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an escalator or an electric road (hereinafter referred to as an escalator), and particularly to a parapet structure of an arcuate portion where a handrail is reversed.

0002

[Prior Art] Generally, escalators etc. are shown in Figs. 2 to 5.
The configuration is shown in . That is, in the figure, 1 is an endless array of steps for carrying passengers, 2 is an endlessly arranged handrail, 3 is a handrail panel,

0
[003] 4 is a deck, 5 is a handrail frame, and the balustrade panel 3, the deck 4, and the handrail frame 5 constitute the balustrade 6. 7 is a main body frame that maintains the strength of the handrail 6, F is the building floor, 8 is a clamping pressure roller that clamps and drives the handrail 2 from above and below, and 9 is a chain 10 that connects the clamping pressure roller.
This is a driving means that drives the vehicle via the

In the reversing area of the handrail 2, as shown in FIGS. 4 and 5, a guide roller 5a rotatably provided in the U-shaped groove of the handrail frame 5 is rotated around the entire circumference of the arc-shaped portion. As shown in FIGS. 6 and 7, resin guides 5b may be provided here and there instead of the guide rollers 5a, or resin guides may be provided over the entire circumference of the arc-shaped portion. There was something.

[0005]

[Problem to be solved by the invention] In particular, for example,
In the case of a recently popular slim type escalator such as the one disclosed in Publication No. 3-26386, as shown in FIGS. 8 and 9,
Since it is difficult to install rollers to guide the handrail 2 due to space limitations, a structure is adopted in which the resin guide 11 is inserted into the flange of the flanged frame 12 around the entire circumference of the arcuate part to guide the handrail 2. The following problems have become prominent.

[0006] Because the surface pressure exerted by the handrail is large, it is susceptible to aging, and the running resistance of the handrail increases over time, causing handrail slippage and shortening the lifespan of the handrail drive device or the handrail itself. Hidden.

[0007] As the lift of the escalator becomes longer, the running resistance of the handrail naturally increases, but as the running resistance of the handrail increases, the force applied to the arc-shaped part increases and the strength of the handrail becomes insufficient. Or,
The increase in surface pressure increases the amount of wear on the resin guide, which greatly limits the lift of the escalator.

[0008] The present invention has been made in view of the above points.
The purpose of the present invention is to provide a parapet that is particularly suitable for guiding the arc-shaped handrail of a slim type escalator or the like.

[0009]

[Means for Solving the Problems] The present invention consists of: (i) A flanged frame made of a thin plate is integrally constructed by covering the upper edge of the balustrade panel, and a resin guide is inserted into the flange of the flanged frame. In an escalator that guides a handrail, a part of the resin guide is removed and a roller base is placed in the removed part along a flanged frame, and rollers are rotatably provided on both sides of the roller base in the width direction of the handrail panel. , A roller guide device is provided for guiding the handrail by the roller. ■ The roller guide device is installed at the inverted arc portion of the handrail. It is installed inside.

0010

[Operation] With the construction as described above, the handrail can be guided extremely smoothly.

[0011]

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a layout diagram showing the arrangement and attachment state of the guide roller 24 according to an embodiment of the present invention, in which the guide roller 24 (consisting of 24a, 24b) that guides the handrail 2 is approximately 15 degrees from the vertical line. Approximately four resin guides 11a and 11b are arranged between the angles of 65° and 65°, and resin guides 11a and 11b are arranged in the other arcuate portions.

10 is a view taken along the line AA in FIG. 1, FIG. 11 is a view taken along the line BB in FIG. 1, and FIG. 12 is an enlarged view of the roller guide device 20 to which a plurality of guide rollers 24 are attached. 8 and 9 indicate the same parts, and 11a and 11b are inserted into the flanged frame 12 shown in FIG. 9 (however, it is bent into an arc shape). 21 is a stopper fitted into the notch 12a of the flanged frame 12 shown in FIG.
Constrain movement in a direction. 22 is frame 1 with flange
A roller base is disposed along the arc-shaped flanged frame 12 between the convex portion 12b of No. 2 and the resin guides 11a and 11b (so as to fill the gap between the resin guides 11a and 11b), and both ends are Resin guide 11a, 1
It is attached to 1b by Sarabis 23.

24a and 24b are screw holes 22a and 24b provided on the side surface of the roller base 22 (in the width direction of the balustrade panel 3),
The guide rollers are rotatably attached to the guide rollers 22b by pins 25a and 25b, and the heads of the pins 25a and 25b contact the rising side surfaces of the flanged frame 12 to control the movement of the guide rollers 24a and 24b in the Y and Z directions. to bound. 26
is a spacer provided between the guide rollers 24a, 24b and the roller base 22, and the roller guide device 20 shown in FIG. do.

FIG. 13 is a diagram showing another embodiment in which the roller guide device 20 is provided both above and below the inverted portion of the handrail, and the mounting structure of the roller guide device 20 is exactly the same as in the above case. .

Next, we will consider which range of the arcuate portion the roller guide device 20 should be installed in the most efficient and economical manner. When pulling the handrail through the arc-shaped part in the upper inversion part shown in Fig. 14, the tension T of the handrail is

[
[0016]T=ex・TO...■. However, x=μθ, μ is the friction coefficient, TO is the tension before entering the reversal part, and θ is the wrap angle (rad).

For example, when ultra-high molecular weight polyethylene is used as a resin guide, the dynamic friction coefficient μ varies with load and moving speed as shown in FIGS. 15 and 16.
n, it is estimated that μ = 0.3, and in formula (■) μ = 0.3 and each winding angle θ≒0.26 (15°)
, 1.13 (65°), 2 ( 115°), 2.88 (
By substituting 165°) and 3.14 (180°), the handrail tension T at each position is 1.08TO.
, 1.41TO , 1.83TO , 2.37TO ,
It becomes 2.57TO.

[0018] Here, the greater the tension T of the handrail, the greater the centripetal force, which naturally increases the frictional force. In addition, the friction coefficient of the resin guide increases as the surface pressure (centripetal force) increases, so due to the synergistic effect with the above, the resistance becomes extremely large in the area where the centripetal force is large, so the guide roller 24 is placed in the area where the tension T is large. It turns out that the most effective way is to

On the other hand, the coefficient of friction of the resin guide tends to increase dramatically over time, and considering that the higher the surface pressure is, the more the resin guide changes over time, the guide rollers 24 are arranged in the parts where the tension T is large. I'd say it's better to do so.

Next, FIG. 17 shows two cases in which guide rollers 24 are provided in the ranges P, Q, R, and S in FIG. Experimental data is shown in which the sliding resistance was measured when the clamping roller 8 was opened as shown in FIG. , apply force to the handrail 2 in the direction of the arrow,
It is defined as the force T (Kg) at which the handrail 2 starts moving.

As can be seen from this experimental data, the sliding resistance of the full-circumference guide roller is about half that of the full-circumference resin guide. ■Compared to full-circumference guide rollers, the sliding resistance does not increase significantly even when the guide rollers are arranged only in the R range or the S range. ■Theoretically, the sliding resistance should be lower if the rollers are placed in the S range instead of just the R range, but in reality there is almost no difference. I understand.

[0022] In particular, regarding the above-mentioned item (2), the weight of the handrail 2 is moving in a direction that weakens the centripetal force;
This is thought to be because the handrail 2 bulges outward at both ends of the reversing section due to its rigidity, creating a gap between it and the guide member. Even when the resin guide of the inverted section (all-around resin guide) of an escalator actually installed at the site was investigated, there was hardly any evidence that the handrail 2 had hit hard at both ends of the inverted section.

[0023] Therefore, when considering the cost and performance/function aspects comprehensively, only in the R range, that is, as shown in Fig. 1,
It can be said that disposing the roller guide device 20 is the most efficient and economical.

[0024]

[Effects of the Invention] As described above, according to the present invention, even in the slim type escalators that have become popular recently, it is possible not only to easily install a roller guide device to suppress the running resistance of the handrail, but also to completely reduce the running resistance of the handrail. Existing escalators guided by circumferential resin guides can be extremely easily replaced with roller guide devices. In addition, even in the arcuate portion where the handrail running resistance is large, roller guide devices are installed only in the areas where the surface pressure of the handrail is particularly large, and inexpensive resin guides are placed in the areas where the surface pressure is relatively small. It is possible to prevent the rail from coming off the frame and effectively reduce the running resistance of the handrail at an appropriate cost.

Therefore, the present invention exhibits the following unique effects. (b) Handrail running resistance is less likely to change over time, so if the handrail driving force is adjusted at the time of installation, there will be no need to readjust it over a long period of time. (b) Since the handrail running resistance is reduced, the driving force of the handrail can be reduced, and the influence on the handrail itself and the handrail drive device can be reduced. This makes it possible to extend the lifespan.

(c) The lift range applicable to slim type escalators and the like can be expanded.

[0027] In the above explanation, an example has been described in which the roller guide device is provided on the inverted circular arc portion of the handrail. However, for example, in the case of an escalator with a very high height, the roller guide device is not limited to the inverted circular arc portion, but may be installed on a convex curved portion or the like. It may also be arranged on a concave curved portion or a direct portion to reduce running resistance of the handrail.

[0028]

[Brief explanation of drawings]

FIG. 1 is a layout diagram showing the arrangement and attachment state of a guide roller 20 according to an embodiment of the present invention.

FIG. 2 is a side view of the vicinity of the top of the escalator.

FIG. 3 is a view taken along line CC in FIG. 2;

FIG. 4 is a partial internal structure diagram of FIG. 2;

FIG. 5 is a view taken along line DD in FIG. 2;

FIG. 6 is an internal structure diagram showing another example corresponding to FIG. 4;

FIG. 7 is an arrow view showing another example corresponding to FIG. 5;

FIG. 8 is an exploded perspective view of a handrail support and guide device for a slim type escalator or the like.

FIG. 9 is a sectional view of a handrail guide device such as a slim type escalator.

[0029]

FIG. 10 is a view taken along line A-A in FIG. 1;

FIG. 11 is a view taken along line BB in FIG. 1;

FIG. 12 is an enlarged view of a roller guide device according to the present invention.

FIG. 13 is a layout diagram showing the arrangement and attachment state of the guide roller 20 according to another embodiment of the present invention.

[0030]

FIG. 14 is an explanatory diagram illustrating one effect of the present invention.

FIG. 15 is a characteristic diagram showing the characteristics of the dynamic friction coefficient of ultra-high molecular weight polyethylene.

FIG. 16 is a characteristic diagram showing the characteristics of the dynamic friction coefficient of ultra-high molecular weight polyethylene.

FIG. 17 is a diagram showing experimental data of the present invention.

FIG. 18 is a diagram showing the definition of sliding resistance.

[0031]

[Explanation of symbols]

1 step 2 Handrail 3. Balustrade panel 11, 11a, 11b Resin guide 12 Frame with flange 22 Roller base 24, 24a, 24b Guide roller 20 Roller guide device

Claims (3)

[Claims] [Claim 1] A balustrade for an escalator, etc., which is integrally constructed by covering the upper edge of the balustrade panel with a flanged frame made of a thin plate, and a resin guide is inserted into the flange of the flanged frame to guide a handrail. In,
A part of the resin guide is removed, and a roller base is arranged in the removed part along the flanged frame, and rollers are rotatably provided on both sides of the roller base in the width direction of the balustrade panel, and the roller base A handrail for an escalator or the like, characterized in that it is provided with a roller guide device for guiding the handrail. 2. A handrail for an escalator or the like according to claim 1, wherein the roller guide device according to claim 1 is provided at an inverted circular arc portion of the handrail. 3. The handrail for an escalator or the like according to claim 2, wherein the roller guide device according to claim 2 is provided within an angle of approximately 15° to 65° from the vertical line.