JP3165675B2 - Electrical insulation rail fastening device and insulation pad for iron sleepers - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electrically insulating rail fastening device and an insulating pad for an iron sleeper.

[0002]

2. Description of the Related Art A traffic signal for controlling the operation of a railway vehicle is operated by a current flowing in a track. For example, when a signal current flowing in a left rail is passed to the right rail through wheels and axles of a passing vehicle, a constant signal is generated. It is well known that a signal circuit for a section is completed and a traffic light is operated (switched to red, yellow, and blue).

However, when the railroad sleepers are replaced with iron sleepers, even if the current path (left rail → left wheel → axle → right wheel → right rail) is set, the connection between the iron sleepers and the rails Without complete electrical insulation, the iron sleeper body would connect the left and right rails with current, resulting in a signal failure and the vehicle unable to operate. Therefore, an electrically insulated rail fastening device for an iron sleeper in which this disadvantage is improved is provided, and an iron sleeper track is configured.

[0004]

However, in the conventional electrically insulated rail fastening device for iron sleepers, the insulation is not perfect, and in the case of heavy rain, sideways rain, or the like,
The rain that falls on the left rail flows out from the top of the rail fastening device to the iron sleeper surface to form a water film, and if an accident occurs that electrically connects the left and right rails, the signal circuit is disturbed. Was.

[0005]

The present invention has been proposed to solve the above-mentioned problems, and the following points are points of improvement. (1) The insulation pad for an iron sleeper according to the present invention, the length of the rail in the longitudinal direction is longer than the width of the sleeper, and a water film is not formed on the side surface of the iron sleeper by rainwater flowing from the rail to the pad. I did it. (2) In addition, the following design has been applied to the insulation pad to prevent rainwater that has run down from the rail onto the fastening device or insulation pad from flowing down to the upper surface of the iron sleeper and forming a water film. . (2a) A flat U-shaped water-stop ridge is provided on the contact surface of the rail-holding insulation block, and the insulation block compresses the water-stop ridge with the fastening pressure to stop the water, and rainwater flows around the fastening bolt. Was not reached. (2b) A water-blocking flange is provided on the upper surface of the exposed portion (four corners) of the insulating pad to deflect the rainwater flowing from the rail onto the pad without flowing it to the upper surface of the iron sleeper.

In the present invention, as described above, it is designed to cope with an unexpected itself, for example, an unpredictable heavy rainfall, and is designed to prevent an accident even if it is useless in normal times. It has a structure.

[0007] Based on the above-mentioned viewpoint, the electric sleeper rail fastening device for an iron sleeper according to the present invention has a rail installed on an upper surface of the iron sleeper via an insulating pad, and an upper surface of the iron sleeper on both sides of the rail. The engaging portion of the fastening bolt is engaged with the engaging hole formed at the same time, the leg of the gauge block is fitted and engaged, and the fastening bolt rising from the engaging hole is provided with the insulating block, the spring clip and the circular spring. Each bolt insertion hole is fitted, each member is loaded, and a nut is screwed into a fastening bolt on the upper side of the circular spring to press the lower flange of the rail with the insulating pad, and the longitudinal length of the rail of the insulating pad The length dimension (L) in the direction is larger than the width (W) of the iron sleeper, and a recess for fitting a fastening bolt is provided on both sides in the rail width direction of the insulating pad. Around the lower part of the insulating block, a water-stop ridge is provided at the outer edge of the abutting surface to be in water-tight pressure contact with the side edge of the lower projecting part. A water-blocking flange is provided at four corners of the upper surface of the insulating pad exposed from the lower flange to guide rainwater flowing down from the rail to the upper surface of the insulating pad to the rail longitudinal edge of the insulating pad. Also, the insulating pad in the electric sleeper rail fastening device for an iron sleeper according to the present invention is formed such that the length (L) of the insulating pad in the rail longitudinal direction is longer than the width (W) of the iron sleeper. In addition, on the upper surface of the insulating pad, a concave portion for fitting a fastening bolt is provided on both sides in the rail width direction. The outer edge of the contact surface is provided with a waterproof ridge that is in water-tight contact with the side edge of the lower protruding portion, and at the four corners of the upper surface of the insulating pad, which is exposed from the lower flange of the insulating block and the rail, from the rail. It is characterized in that a water-blocking flange is provided to guide rainwater flowing down to the upper surface of the insulating pad to the longitudinal edge of the rail of the insulating pad. Further, in the present invention, at a position surrounding the concave portion, a reinforcing member made of canvas having a substantially U-shaped plane is embedded in the thick portion of the insulating pad.

According to the present invention, the insulating pad has a length dimension (L) longer than the iron sleeper width (W) in the rail longitudinal direction to guide rainwater flowing from the rail onto the pad to the side of the rail. Since the water film is not formed on the side of the iron sleeper by rainwater, electric insulation is improved. In addition, on the upper surface of the insulating pad, a waterproof ridge is provided on the contact surface with the rail holding insulating block, and the waterproof ridge is compressed by the fastening pressure of the insulating block with the fastening bolt to stop water, and around the fastening bolt. The rainwater was prevented from reaching, and a water-blocking flange was provided on the upper surface of the four corners of the insulating pad and exposed from the side of the rail and from the fastening block, so that the rainwater flowing from the rail onto the pad could be used as an iron pillow. In combination with the fact that the water is not diverted to the upper surface of the hook, water is not formed on the rail surface even in the event of heavy rain, and electrical insulation can be ensured.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a diagram showing an iron sleeper, FIGS. 2 and 3
Fig. 4 is a sectional view of a nabla type electrically insulating rail fastening device, and Fig. 4
2 is a plan view of FIG. 2, FIG. 5 is a component diagram, FIGS. 6 to 8 are enlarged views of the insulating pad, and FIG. 9 is a mounting view of the insulating pad of FIG.

As shown in FIG. 1, the iron sleeper 1 has a substantially gate-shaped cross section perpendicular to the longitudinal direction, the upper surface 2 is flat, has a predetermined length and a predetermined width (W), and 2, two plane-shaped substantially T-shaped engagement holes 3 are provided on each of the right and left sides, and rails 4 are installed between the paired engagement holes 3 on the left and right sides, as shown in FIG. The rail 4 is fixed to the iron sleeper 1 by an electrically insulating fastening device.

As shown in FIG. 2 and subsequent figures, a rail 4 is provided with track pads (hereinafter referred to as insulating pads) on the upper surface 2 of the iron sleeper 1.
5, a T-bolt 6 is inserted into the engaging hole 3, and the engaging arm 7 is locked to the edge of the engaging hole 3. The lower flange 13 of the rail 4 is fastened to the upper surface of the insulating pad 5 by the T-bolt 6 and the nut 22 via the spring clip 11 and the circular spring 12.

Each component will be described in order with reference to FIG. 5. The insulating pad 5 is made of synthetic rubber (for example, vulcanized and molded from ordinary rubber and high-damping rubber).
As shown in the figure, a plane rectangle having a predetermined length dimension (L) extending in the longitudinal direction of the rail 4, a predetermined width dimension extending in the width direction of the rail 4, and a predetermined thickness, and both sides in the width direction Is formed with a recess 15 into which the shaft of the T-bolt 6 is fitted. A reinforcing material such as a substantially U-shaped canvas 16 is buried inside the thickness of the insulating pad 5 so as to surround the concave portion 15 so that the concave portion 15 is not broken by the T-bolt 6. It is configured.

Further, as shown in FIG. 6, the insulating pad 5 has a length (L) longer than the width (W) of the iron sleeper 1 shown in FIG. When the rainwater flowing from the insulating pad 5 to the insulating pad 5 falls from the rail longitudinal edge 17 of the insulating pad 5, the rain water does not fall on the upper surface 2 and the side surface 18 of the iron sleeper 1, but The film is not made.

Further, in order to prevent rainwater that has flowed down from the rail 4 onto the components of the fastening device and the insulating pad 5 from flowing down to the upper surface 2 of the iron sleeper 1, a water film cannot be formed on the upper surface 2. The upper surface of the insulating pad 5 is configured as follows. First, on both sides in the rail width direction of the insulating pad 5, a thin contact surface 19 is formed around the concave portion 15 over a predetermined range, and a substantially U-shaped water stop is formed so as to surround the thin contact surface 19. A ridge 20 is provided.

That is, the lower projecting portion 21 of the rail-holding insulating block 10 shown in FIGS. 5C and 5D is brought into contact with the upper surface of the thin contact surface 19. When the side edge portion 21 abuts on the inner surface of the U-shaped water blocking ridge 20 and the insulating block 10 is fastened from above and below by the T-bolt 6 and the nut 22, the insulating block 10 made of elastic plastic is fastened. It is compressed by pressure and presses against the inner surface of the water stopping ridge 20 to stop water.
It is provided so that rainwater that has fallen on the upper surface of the T-bolt does not reach the T-bolt 6.

Further, at the exposed portions at the four corners of the insulating pad 5, that is, at the positions separated from the lower flange 13 of the rail 4 and the mounting side edge of the insulating block 10, two water-impervious flanges 23, 24 are formed in the rail longitudinal direction. Is provided along,
A gutter portion 25 is formed by the water-blocking flanges 23 and 24, and the rainwater flowing out from the rail 4 onto the insulating pad 5 is configured not to flow to the upper surface 2 of the iron sleeper 1 by the gutter portion 25. In addition, as described above, the length (L) of the edge 17 in the rail longitudinal direction of the insulating pad 5 is provided longer than the width (W) of the iron sleeper 1, so that the gutter portion 25 is provided.
Rain water flowing down from does not fall on the side surface 18 of the rail 4,
A water film is not formed on the side surface 18.

It is to be noted that the space between the inner water-blocking flanges 23 and 24 located on the left and right sides of the upper surface of the insulating pad 5 and the entire lower surface is spaced along the rail longitudinal direction and at intervals in the longitudinal direction. A plurality of grooves 28 with peaks 26 and valleys 27
6 and 7, the grooves 28 on the upper surface and the grooves 28 on the lower surface of the insulating pad 5 are formed with their positions shifted in the rail width direction of the insulating pad 5. ing. Each groove 28 is formed to give the insulating pad 5 a vibration absorption function more ideal for a sleeper.

When the rail 4 is installed on the upper surface of the insulating pad 5 described above, the side edge of the lower flange 13 of the rail 4 is connected to the bottom 29 of the U-shaped water blocking ridge 20 of the insulating pad 5 and the inner waterproof flange. Close contact with 23.

Next, the leg 31 of the gauge block 8 having the shape shown in FIG. 3 is fitted into the large diameter portion 30 of the engagement hole 3 in the upper surface 2 of the iron sleeper 1. Then, the insulating block 10 is disposed so as to straddle the gauge block 8 and the lower flange 13 of the rail 4. As shown in FIG. 5D, the insulating block 10 has a bolt insertion hole 32 formed at the center thereof, and the lower protruding portion 21 formed around the bolt insertion hole 32 is formed around the recess 15 in the insulating pad 5. The one side 34 of the insulating block 10 presses the lower flange 13 of the rail 4, and the other side 35 presses the upper part of the gauge block 8.

A plurality of small protrusions 36 are provided along the upper surface side edge of the insulating block 10.
A rectangular plate spring-shaped spring clip 11 having a bolt insertion hole 37 is placed on the upper surface of the spring, and is positioned by the small projection 36. Bolt hole 38 above spring clip 11
Is mounted.

Each of the above-mentioned parts includes a T-shaped bolt 6 and a nut 22.
Are tightened together. The T-shaped bolt 6 is inserted from above the large diameter portion 30 of the engaging hole 3 with the engaging arm 7 aligned with the longitudinal direction of the engaging hole 3 on the upper surface of the iron sleeper 1. Is moved to a predetermined fastening position, as shown in FIGS. 2 and 3, the engagement arm 7 can be engaged with the lower side edges of the engagement hole 3.

The T-bolt 6 is arranged as shown in FIGS. 2 and 3, and each part is placed as shown in the figure, and the nut 22 is fastened.
The rail 4 can be fastened to the iron sleeper 1 with electrical insulation via the insulating block 10 and the gauge block 8.

[0023]

As described above, according to the present invention,
The insulation pad for iron sleepers has a length dimension (L) longer than the width of the iron sleeper (W), and the rainwater flowing from the rail to the pad forms a water film on the side of the iron sleeper. Since it is not provided, there is an effect that the electric insulation is improved. In addition, on the upper surface of the insulating pad, a water stopping ridge is provided on the contact surface with the rail holding insulating block, and the insulating block compresses the water stopping ridge by the fastening pressure of the fastening bolt to stop the water and fastens. Rainwater was prevented from reaching around the bolts, and a water-blocking flange was provided on the top of the four corners of the insulating pad and exposed from the side of the rail and the exposed part from the fastening block. In combination with the fact that the rainwater was not diverted to the top of the iron sleeper, instead of diverting the water, heavy rain such as heavy rain that could not be predicted,
Even in the case of side-hitting rain, etc., it is possible to secure electrical insulation in the rail fastening device for iron sleepers, and it is possible to prevent an electrical short circuit accident due to a water film on the rail surface and a signal circuit disturbance due to this. .

[Brief description of the drawings]

1A is a plan view of an iron sleeper, FIG. 1B is a front view, and FIG. 1C is a cross-sectional view taken along the line CC of FIG. 1B.

FIG. 2 is a partial sectional view of a rail fastening device for an iron sleeper.

FIG. 3 is a sectional view of the rail fastening device at a position different from that of FIG. 2;

FIG. 4 is a plan view of FIG. 2;

FIGS. 5A and 5B are a plan view and a sectional view of a spring clip, FIGS. 5C and 5D are a plan view and a sectional view of an insulating block, and FIGS. 5E and 5F are circular springs. Plan view and cross section of the
(G), (H), and (L) are a plan view, a front view, and a side view of a gauge block, and (NU), (L), and (E) are a plan view, a front view, and a side view of an insulating pad.

FIG. 6 is an enlarged plan view of an insulating pad.

FIG. 7 is a sectional view taken along line AA of FIG. 6;

FIG. 8 is a sectional view taken along the line BB of FIG. 6;

FIG. 9 is an enlarged side sectional view showing a state of attachment of an insulating pad to an iron sleeper.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Iron sleeper 2 Top surface 3 Engagement hole 4 Rail 5 Insulation pad 6 T-bolt 7 Engagement arm part 8 Gauge block 10 Insulation block 11 Spring clip 12 Circular spring 13 Lower flange 15 Depression 16 Canvas 17 Longitudinal edge 18 Side surface DESCRIPTION OF SYMBOLS 19 Thin contact surface 20 Water stop ridge 21 Lower projecting part 22 Nut 23 Waterproof flange 24 Waterproof flange 25 Gutter part 26 Peak part 27 Valley part 28 Groove 29 Bottom side 30 Large diameter part 31 Leg part 32 Bolt insertion hole 34 One Side 35 Other side 36 Small protrusion 37 Bolt insertion hole

Claims (3)

(57) [Claims] 1. A rail is provided on an upper surface of an iron sleeper via an insulating pad, and an engaging portion of a fastening bolt is engaged with an engaging hole formed on the upper surface of the iron sleeper on both sides of the rail, and a gauge block is provided. The bolts of the insulating block, the spring clip, and the circular spring are fitted to the fastening bolts that rise from the engagement holes, and these members are stacked on the fastening bolts. The lower flange of the rail is pressed by the insulating pad by screwing a nut to the fastening bolt on the upper side of the rail, and the length (L) of the insulating pad in the rail longitudinal direction is larger than the width (W) of the iron sleeper. A concave portion for fastening bolts is provided on both sides of the insulating pad in the rail width direction, and the lower surface of the lower projecting portion of the insulating block abuts around the concave portion on the upper surface of the insulating pad. Face Water ridges are provided at the outer edges of the insulating pads and water-tightly pressed against the side edges of the lower protruding portions. An electrically insulating rail fastening device for an iron sleeper, wherein a water-blocking flange is provided for guiding the rail to the rail longitudinal edge of the insulating pad. 2. A length dimension (L) of the insulating pad in the rail longitudinal direction is longer than a width dimension (W) of the iron sleeper, and fastening bolts are provided on both sides in the rail width direction on the upper surface of the insulating pad. And the periphery of the recess on the upper surface of the insulating pad is a contact surface with which the lower surface of the lower protruding portion of the insulating block contacts, and the outer edge of this abutment surface is watertight with the side edge of the lower protruding portion. Water-stopping ridges are provided so as to be in pressure contact with each other, and rain water flowing down from the rail to the upper surface of the insulating pad is provided at the four corners of the upper surface of the insulating pad which is exposed from the lower flange of the insulating block and the rail. An insulating pad in an electrically insulated rail fastening device for an iron sleeper, wherein a water-blocking flange leading to an edge is provided. 3. The electrically insulated rail fastening device for an iron sleeper according to claim 2, wherein a reinforcing member made of a substantially U-shaped canvas is buried in a thick portion of the insulating pad at a position surrounding the concave portion. Insulation pads.