JP2001001337A - Third rail protecting plate - Google Patents

Abstract

PROBLEM TO BE SOLVED: To reduce treatment costs, to protect environment, to improve the dimensional precision of a third rail protecting plate, to reduce installation labor, to extend a service life, and to facilitate maintenance by recycling railway business waste such as used thickets, commuter pass, and coupon tickets, into a third rail protecting plate. SOLUTION: Waste of a composite material made of paper and resin is crushed and kneaded with a thermoplastic resin, the kneaded raw material is heated, pressurized, and extrusion-molded to mold a long-sized plate-shaped recycled board. The board is heated and pressurized in a mold to form a lengthy molded material 18 having an approximately L-shaped cross section. The molded material 18 is fitted to arms 26 installed at constant intervals on one side of a third rail 23 by making a screw bolt penetrate it to cover the back and upper surface of the third rail 23.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a protection plate for a third rail laid along a track rail for supplying power to a vehicle.

[0002]

2. Description of the Related Art As is well known, in a vehicle such as a subway, a third rail for supplying power is provided along a track rail.
Conventionally, the third rail is surrounded by an insulating protective plate to prevent a person from accidentally touching the third rail and causing an electric shock accident.

In the conventional third rail protection plate, arms are erected on one side of the third rail at appropriate intervals, and wood such as Yonematsu is for example 55 mm thick and 190 m wide.
m, a length of 4000 mm, and a thickness of 18 mm, a width of 300 mm, and a length of 4000 mm are processed into two kinds of members, and both plate-like members are respectively attached to arms so that the upper surface and the back surface of the third rail are covered. It was fixed with a screw bolt.

[0004] Incidentally, natural materials such as rice pine have variations in individual trees, so that the processed materials are also likely to vary. Therefore, a curing period of at least one month is required to maintain dimensional accuracy, and both members weigh about 35 kg.
It requires a lot of labor for installation work because it is heavy, and even if Yonematsu is used, the effect of water resistance treatment does not last for a long time and it is easily corroded due to exposure to wind and rain, so its service life is short and maintenance costs are high. There was such a problem.

On the other hand, a large number of used tickets, commuter passes, coupons and the like are collected every day on the basis of the company operating the railway, and these wastes are made of a composite material of paper, resin and magnetic powder. As such, it is difficult to recycle, and in the past it was exclusively incinerated. However, as is well known, incineration requires a great deal of cost for treating incinerated ash and the like, and has problems such as destruction of the environment due to generation of dioxin.

[0006]

SUMMARY OF THE INVENTION Accordingly, the present invention is directed to a third rail system which uses a railway business waste such as a used ticket, a commuter pass or a coupon made of a composite material of paper, resin and magnetic powder as described above. By enabling recycling to the protection plate, the processing cost is reduced, environmental destruction is eliminated, and the dimensional accuracy of the third rail protection plate is improved, the labor required for installation is reduced, the service life is extended, and maintenance is improved. It is intended to have a remarkable effect such as making it easier.

[0007]

For this purpose, the third rail protection plate of the present invention crushes waste made of a composite material of paper and resin, kneads it with a thermoplastic resin, and heats the kneaded raw material. A long flat reclaimed board is formed by pressing and extruding, and the reclaimed board is heated and pressed by a mold to form a long molded material having a substantially L-shaped cross section. The long molded material is fixed to a metal arm standing upright on one side of the rail by penetrating a screw bolt so as to cover the back and top surfaces of the third rail. Further, the present invention is characterized in that in the above third rail protection plate, the waste is a railway business waste such as a used ticket, a commuter pass, a coupon and the like made of a composite material of paper, resin and magnetic powder. .

[0008]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, embodiments of the present invention will be described with reference to the drawings. Generally, a ticket is a composite material of paper, resin and magnetic powder because magnetic powder is coated on the back surface for data recording for automatic ticket gates. Commuter tickets and coupons are generally made of PET ( (Polyethylene terephthalate) resin and magnetic powder. Therefore, a large amount of the used product is discharged as waste by the daily railway business without being mixed with other foreign substances. The present invention recycles such waste. That is, railway business wastes such as tickets, commuter passes, and coupons are crushed to a size of 5 mm or less by passing them through a crusher 1 and a crusher 2 shown in FIG. This is put in the storage tank 3, and a thermoplastic resin having a melting point of 110 ° C to 205 ° C, such as polypropylene or polyethylene, is mixed as a binder. The mixing ratio is as follows: tickets: 20 to 60 (weight)%, commuter pass or coupon: 10 to 30 (weight)%, thermoplastic resin: 20
６０60 (weight)%. In addition, several percent of a flame retardant is mixed.

[0009] Then, the pulverized waste of the railway business and the thermoplastic resin are kneaded in the storage tank 3, and the kneaded raw materials are charged into the board machine 6 via the conveyors 4 and 5. The board machine 6 is configured such that heating chambers 7 to 9 are connected in a straight line, and endless belts 10, 11 are guided by a number of rollers 12, 12,. The kneaded raw material is adjusted to a constant thickness by a large-diameter roller 13 provided on the inlet side of the heating chamber and a plurality of sub-rollers 14 provided therearound, and moves in the heating chamber, thereby heating and heating the material. The plate is extruded by pressure into a flat recycled board having a thickness of 12 mm. Then, the recycled board 15 is cut into a long dimension of 380 mm in width and 2500 mm in length by the cutter 16 according to the product shape.

Then, the recycled board 15 is heated to 200 ° C. to 220 ° C. through an infrared heating device 17 to soften the thermoplastic resin, and is pressed in this state by a mold of a stamping press 19, as shown in FIG. As described above, the long molded material 18 whose cross section is curved in a substantially L-shape is formed. The one side edge 18a of the long molded material is further curved inward, and the other side edge 18b is formed to be thin by pressing. Reference numeral 21 denotes a mounting through hole formed in an intermediate portion of the elongated molded material, and reference numeral 22 denotes a connecting through hole formed at both ends of the elongated molded material.

FIGS. 3 and 4 show a state in which the long molded material 18 thus formed is attached as a third rail protection plate. In the figure, reference numeral 23 denotes a third rail supported by a support insulator 24. The third rail is of the same shape as the track rail 25 of the vehicle. Reference numeral 26 denotes an arm which is erected on one side of the third rail 23 by fixing the base 27 to the sleeper 20 with a screw bolt 28. The arm is erected at regular intervals along the third rail. . The arm bar 26 is bent in an inverted U-shape so as to extend above the third rail 23 as shown in the figure, and the long molded material 18 is formed so as to cover the back and upper surfaces of the third rail.
The screw bolts 31 and 32 are passed through the mounting through-holes 21 through the vertical column portions 29 and the horizontal beam portions 30 of the nut 3 respectively.
It is fastened by tightening 3,34. As described above, since the long molded material 18 has a substantially L-shaped cross section, the back surface and the upper surface of the third rail 23 can be covered by one member.

Reference numeral 35 denotes a connecting plate for connecting the elongated molded material in the longitudinal direction by overlapping the screw between the two ends of the elongated molded material 18, inserting a screw bolt 36 into the connecting through hole 22 and tightening a nut 37. is there. The long molded material 18 thus formed can be cut freely with a saw like wood, and can be nailed, canned, drilled, screwed, and the like. In addition, since it is lightweight, has a substantially L-shaped cross section, and can cover the back surface and the top surface of the third rail 23 with a single member, the mounting work becomes easy.

Reference numeral 38 denotes a front protection plate fixed to one side surface of the third rail by a screw bolt 39.
The front protection plate can also be formed by the reclaimed board.

In addition, the long molded material 18 formed as described above using the thermoplastic resin and the waste made of the composite material of the paper, the resin and the magnetic powder as the raw materials has water resistance, water repellency, and water resistance. It has corrosion resistance and alkali resistance, does not rot like wood, and can maintain excellent mechanical properties for a long period of time.

Incidentally, Table 1 shows the mixing ratio of the ticket: 25
(Weight)%, commuter pass or coupon: 15 (weight)%, thermoplastic resin: 60 (weight)%, shows the mechanical properties of a long molded material. In addition, this long molded material has the advantage of being excellent in low temperature resistance (resistant to -30 ° C.) as compared with those made of polyethylene or polypropylene, and also has such features as heat insulation due to low thermal conductivity. is there.

[Table 1]

[0016]

As described above, the third rail protection plate of the present invention pulverizes waste made of a composite material of paper and resin, kneads it with a thermoplastic resin, and extrudes the kneaded raw material by heating, pressurizing, and pressing. A long flat reclaimed board is formed by molding, and the reclaimed board is heated and pressed by a mold to form a long molded material having a substantially L-shaped cross section. This long molded material is fastened to the arm which is erected at regular intervals by screw bolts so as to cover the back and upper surfaces of the third rail. Railway business waste such as tickets and coupons can be recycled to third rail protection plates, which not only reduces waste disposal costs, but also has high dimensional accuracy, reduces the labor required for installation, reduces corrosion, and reduces service life. There is a significant effect, such as long maintenance is facilitated.

[Brief description of the drawings]

FIG. 1 is an explanatory view showing a forming process of a third rail protection plate according to the present invention.

FIG. 2 is a perspective view of a third rail protection plate according to the present invention.

FIG. 3 is a cross-sectional view showing an attached state of a third rail protection plate according to the present invention.

FIG. 4 is a front view showing an attached state of a third rail protection plate according to the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Crusher 2 Crusher 3 Storage tank 6 Board machine 15 Regeneration board 16 Infrared heating device 17 Stamping press 18 Long molding material 21 Mounting through hole 23 Third rail 26 Arm metal 31, 32 Screw bolt

 ──────────────────────────────────────────────────続 き Continued on the front page F term (reference) 4D004 AA07 AA12 AA21 CA03 CA04 CA14 CA15 CA29 CB15 CB31 CC17 4F301 AA25 AC13 AC14 BA02 BA12 BA21 BA29 BB02 BC02 BC11 BE01 BE07 BE09 BE15 BE29 BF12 BF15 BF32

Claims (2)

[Claims] 1. A long and flat reclaimed board obtained by crushing waste consisting of a composite material of paper and resin, kneading a thermoplastic resin with the crushed waste, and heating and pressurizing and extruding the kneaded raw material. The reclaimed board is heated and pressed with a mold to form a long molded material having a substantially L-shaped cross section. A third rail protection plate characterized in that the long molded material is fixed by penetrating a screw bolt so that the back and top surfaces of the third rail are covered. 2. The third rail protection plate according to claim 1, wherein the waste is a railway business waste such as a used ticket, a commuter pass, and a coupon made of a composite material of paper, resin and magnetic powder.