JP2536323B2 - Parapets such as escalator - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an escalator, an electric road, etc. (hereinafter referred to as an escalator, etc.), and more particularly to a balustrade structure having an arcuate portion in which a handrail is inverted.

[0002]

2. Description of the Related Art Generally, an escalator and the like are shown in FIGS.
The configuration is as shown in. That is, in the figure, 1 is a step arranged endlessly for carrying passengers, 2 is a handrail also arranged endlessly, 3 is a balustrade panel,

Reference numeral 4 is a deck, 5 is a handrail frame, and the balustrade panel 3, the deck 4, and the handrail frame 5
The balustrade 6 is composed of and. Reference numeral 7 is a main frame for maintaining the strength of the balustrade 6, F is a building floor, 8 is a pressing roller for pressing the handrail 2 from above and below, and 9 is a driving means for driving the pressing roller via the chain 10. is there.

In the reversing area of the handrail 2, a guide roller 5a rotatably provided in the U-shaped groove of the handrail frame 5 as shown in FIGS. 6 or 7, a resin guide 5b may be provided in places instead of the guide roller 5a, or a resin guide may be provided over the entire circumference of the arc-shaped portion. There was something.

[0005]

[Problems to be Solved by the Invention] In particular, for example
In the case of the recent trend of slim type escalator such as JP-A-3-26386, as shown in FIGS. 8 and 9,
Since it is difficult to attach a roller that guides the handrail 2 due to space limitations, the resin guide 11 is inserted into the flange of the flanged frame 12 along the entire circumference of the arcuate portion to guide the handrail 2. The following problems are becoming more prominent.

Since the surface pressure of the handrail is large, it tends to change over time, the running resistance of the handrail increases over time, the handrail slips, and the life of the handrail drive device or the handrail itself is shortened. To do.

[0007] When the lift of the escalator becomes long, the running resistance of the handrail naturally increases, but as the running resistance of the handrail increases, the force applied to the arcuate portion increases and the balustrade strength becomes insufficient. ,
The increase in surface pressure increases the amount of wear of the resin guide, and the lift of the escalator is greatly limited.

The present invention has been made in view of the above points,
In particular, it is an object of the present invention to provide a balustrade that is most suitable for guiding a handrail having an arc-shaped portion in a slim type escalator or the like.

[0009]

According to the present invention, an upper edge of a balustrade panel is integrally formed by covering a frame with a flange made of a thin plate, and a resin guide is inserted into the flange of the flange with a hand. In an escalator or the like for guiding the rail, a part of the resin guide is removed within a range of approximately 15 ° to 65 ° from the vertical line in the handrail reversing arc portion, and the roller base is arranged along the frame with a flange in the removed portion. Rollers are rotatably provided on both sides of the balustrade panel in the width direction roller base, and a roller guide device for guiding the handrail by the rollers is provided.

[0010]

With the above construction, the handrail can be guided extremely smoothly.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is an arrangement view showing an arrangement state and an attachment state of a guide roller 24 according to an embodiment of the present invention. The guide roller 24 (consisting of 24a and 24b) for guiding the handrail 2 is approximately 15 ° from a vertical line. Approximately four pieces are arranged within an angle of up to 65 °, and resin guides 11a and 11b are arranged in the other arc-shaped portions.

FIG. 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. In the figure, the same reference numerals as those in FIGS. 8 and 9 indicate the same elements, but 11a and 11b are inserted into the frame with flange 12 shown in FIG. 9 (however, bent into an arc shape). The resin guide 11 is the same as the resin guide 11, and 21 is a stopper fitted in the notch 12a of the flanged frame 12 shown in FIG.
Constrain movement in the direction. 22 is a frame with flange 1
The roller base is arranged along the arc-shaped flanged frame 12 between the two convex portions 12b and the resin guides 11a and 11b (so as to fill the gap between the resin guides 11a and 11b). Resin guide 11a, 1
It is attached to 1b by Sarabis 23.

Reference numerals 24a and 24b denote screw holes 22a provided on the side surface of the roller base 22 (widthwise direction of the balustrade panel 3).
22b is a guide roller rotatably mounted on pins 22a and 25b by means of pins 25a and 25b. The heads of the pins 25a and 25b contact the rising side surface of the flanged frame 12 to move the guide rollers 24a and 24b in the Y and Z directions. to bound. 26
Is a spacer provided between the guide rollers 24a and 24b and the roller base 22, and the roller base 22, the plurality of guide rollers 24a and 24b, the pins 25a and 25b, and the spacer 26 constitute the roller guide device 20 shown in FIG. To do.

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

Next, the range of the arcuate portion to which the roller guide device 20 is attached is considered to be the most efficient and economical. In the upper reversal portion shown in FIG. 14, when the handrail is pulled through the arcuate portion, the tension T of the handrail is

[0016] the _{^{T = e x · T O ·····}} . Here, x = μθ, μ is the friction coefficient, T _O is the tension before entering the reversal portion, and θ is the winding angle (rad).

For example, when the ultra high molecular weight polyethylene is used as the resin guide, the dynamic friction coefficient μ varies as shown in FIGS. 15 and 16 with respect to the load and the moving speed. Therefore, the moving speed of the handrail of the escalator is 30 m / m.
In, it is estimated that μ = 0.3, and
= 0.3 and winding angles θ ≈ 0.26 (15 °), 1.13 (65
°), 2 (115 °), 2.88 (165 °), 3.14 (180 °)
The tension T of the handrail at each position where
It is 1.08T _O , 1.41T _O , 1.83T _O , 2.37T _O , 2.57T _O.

Here, the greater the tension T of the handrail, the greater the centripetal force, and naturally the greater the frictional force. Further, since the coefficient of friction of the resin guide increases as the surface pressure (centripetal force) increases, the resistance of the portion with a large centripetal force becomes very large due to the synergistic effect with the above, so the tension T
It can be seen that it is most effective to dispose the guide roller 24 in a large area of.

On the other hand, in consideration of the fact that the resin guide has a property that the coefficient of friction extremely increases with time, and that the higher the surface pressure is, the more likely it is to change with time. It is better to do it.

Next, FIG. 17 shows a case where the guide roller 24 is arranged in the range of P, Q, R and S in FIG. And the experimental data obtained by measuring the sliding resistance of the case where the all-round guide roller 24 is provided are shown. Here, the sliding resistance means the state when the pressure roller 8 shown in FIG. 18 is opened. , Force is applied to the handrail 2 in the direction of the arrow,
It is defined as the force T (Kg) at which the handrail 2 starts to move.

As can be seen from the experimental data, the sliding resistance of the full circumference guide roller is about half that of the full circumference resin guide. Even if the guide rollers are arranged only in the R range or the S range, the sliding resistance does not increase so much as compared with the full circumference guide rollers. Although theoretically the sliding resistance should be lowered when the rollers are arranged not only in the R range but also in the S range, practically no difference appears. I understand.

In particular, regarding the above-mentioned, that the own weight of the handrail 2 is moving in the direction of weakening the centripetal force,
It is considered that due to the rigidity of the handrail 2, the handrail 2 bulges outward at both ends of the reversing portion, and a gap is formed between the handrail 2 and the guide member. When the resin guide of the reversing part (all-round resin guide) of the escalator actually installed on the site was examined, almost no evidence that the handrail 2 hit strongly at both ends of the reversing part was found.

Therefore, when the cost and performance functions are comprehensively judged, only in the R range, that is, as shown in FIG.
It can be said that providing the roller guide device 20 is the most efficient and economical.

[0024]

As described above, according to the present invention, even in the recent trend of slim type escalator and the like, not only the roller guide device can be easily provided to suppress the running resistance of the handrail, but The existing escalator guided by the peripheral resin guide can be switched to the roller guide device very easily. Even in the arcuate part where the handrail running resistance becomes large, the roller guide device is installed only in the part where the surface pressure of the handrail is particularly large, and the inexpensive resin guide is arranged in the part where the surface pressure is relatively small. The rail can be prevented from coming off the frame, and the running resistance of the handrail can be effectively reduced at an appropriate cost.

Therefore, the present invention exhibits the following unique effects. (A) Since the handrail running resistance does not easily change over time, if the handrail driving force is adjusted at the beginning of installation, it is not necessary to readjust it for a long time. (B) Since the running resistance of the handrail 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. As a result, the life can be extended.

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

In the above description, an example in which the roller guide device is provided in the handrail reversing arc portion has been described. It may be arranged also in the concave curve portion or the direct portion to reduce the running resistance of the handrail.

[0028]

[Brief description of drawings]

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

FIG. 2 is a side view near the upper portion of the escalator.

FIG. 3 is a view taken along the line CC in FIG.

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

5 is a view taken along the line DD in FIG.

FIG. 6 is an internal structural diagram showing another example corresponding to FIG.

FIG. 7 is a diagram showing another example corresponding to FIG.

FIG. 8 is an exploded perspective view of a handrail support guide device such as a slim type escalator.

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

[0029]

10 is a view taken along the line AA in FIG.

FIG. 11 is a view taken along the line BB in FIG.

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

FIG. 13 is an arrangement view showing an arrangement and mounting state of a guide roller 20 according to another embodiment of the present invention.

[0030]

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

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

FIG. 16 is a characteristic diagram showing characteristics of 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 hand rail 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 (2)

(57) [Claims] 1. An escalator or the like in which a flanged frame made of a thin plate is covered on the upper edge of the balustrade panel to be integrally formed, and a resin guide is inserted into the flange of the flanged frame to guide the handrail, Approximately 15 ° to 65 from the vertical line in the handrail reverse arc
In the range of °, a part of the resin guide is removed, a roller base is arranged along the flanged frame in the removed part, and the rollers are rotatable on both side surfaces of the roller base in the width direction of the balustrade panel. A balustrade such as an escalator, which is provided with a roller guide device for guiding the handrail by the roller. 2. The balustrade for an escalator or the like according to claim 1, wherein the roller base is arranged along a convex portion of the flanged frame, and both ends thereof are attached to the resin guide.