JP4082677B2 - Support device for rigid railway line for tunnel - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
[0002]
The present invention relates to a support device for a rigid train line that supports a trolley line in a narrow tunnel.
[Prior art]
Conventionally, a method described in Patent Document 1 is known as a method for supporting a rigid train line in a tunnel. This method of supporting a rigid train line is one in which a saddle-shaped rigid train line is suspended from a ceiling via a special metal fitting and an insulator.
[Patent Document 1]
Japanese Patent Laid-Open No. 7-9896
[Problems to be solved by the invention]
The conventional overhead wire system requires a large space in the vertical direction, and therefore, a rigid train line cannot be installed in a narrow tunnel. Further, when two trolley wires are suspended in parallel to cope with high-speed driving of a train, it is necessary to support the two trolley wires in parallel to the track surface, but it is difficult to adjust the trolley wires. When supporting the train line close to the ceiling of the tunnel, there is a problem that sufficient insulation cannot be obtained by a normal insulation system.
An object of the present invention is to provide a rigid railway line for tunnels that can support two rigid train lines with a sufficient insulation interval in a small space in a narrow tunnel, and that can easily fine-tune the support position of the rigid train lines. It is to provide a support device.
[0004]
[Means for Solving the Problems]
In order to solve the above problem, in the present invention, the anchor bolt 2 is fixed so as to protrude downward on the ceiling T of the tunnel, and the receiving metal fitting 3 is fixed in contact with the ceiling surface of the tunnel with the anchor bolt 2. The base metal 4 is fixed to the ceiling by the anchor bolt 2 together with the base metal 3 in contact with the lower surface of the metal base 3, and the upper part of the columnar insulator 5 is fixed to the base metal 4. The support device 1 is configured by fixing the center of the support fitting 6 that supports the train line 31. The support fittings 6 are supported so as to extend to the left and right, which are the direction orthogonal to the extension of the train line, and the rigid train lines 31 are respectively supported at the lower portions of the left and right symmetrical positions. The base metal fitting 4 is provided with a bolt insertion hole 4a that allows the anchor bolt 2 to pass therethrough with sufficient play. The receiving metal fitting 3 has a lower surface in a fixed state to the ceiling as a cylindrical surface 3a having an axis along the extending direction of the train line. The base metal fitting 4 is provided with an arc concave surface 4b which comes into surface contact with the cylindrical surface 3a of the receiving metal fitting 3, and the fixing angle with respect to the receiving metal fitting 3 is set around the cylindrical surface 3a in the relative free movement range between the bolt insertion hole 4a and the anchor bolt 2. Can be adjusted. The support bracket 6 can be adjusted around the cylindrical surface 3 a of the seat bracket 3 by receiving the support position of the pair of rigid electric wires 31 by adjusting the fixing angle with the base bracket 4 integrally with the base bracket 4.
[0005]
DETAILED DESCRIPTION OF THE INVENTION
Embodiments of the present invention will be described with reference to the drawings. FIG. 1 shows a rigid railcar supporting device for a tunnel according to the present invention. FIG. 1 is a front view, FIG. 2 is a side view, FIG. 3 is a bottom view, and FIG. FIG. 5 is an enlarged front view of the rigid train wire and the insulating cover, and FIG. 6 is a perspective view of the insulating cover.
[0006]
In the figure, a plurality of support devices 1 are fixed to the ceiling T of the tunnel at intervals between each other in the direction of the train line (direction of travel of the train). A pair of rigid train lines 31 are supported along the plurality of support devices 1 at the lower portions on both sides of each support device 1. The rigid train line 31 is composed of an aluminum rigid body 32 that is a long mold material that is electrically connected to each other at longitudinal ends, and a trolley wire 33 that is sandwiched between the aluminum rigid bodies 32 and the lower portion thereof. . As shown in FIG. 1, the aluminum rigid body 32 has a bowl-shaped cross section in the direction orthogonal to the extension line (left and right direction) of the train line, and has a horizontal top plate 32 a protruding from the left and right ends at the upper part in the attached state. In addition, a pair of parallel sandwiching plates 32b extending downward from the top plate 32a and sandwiching the trolley wire 33 between the lower end portions are provided.
[0007]
The support device 1 has an anchor bolt 2 fixed to the tunnel ceiling T so as to protrude downward, a receiving metal fitting 3 fixed to the ceiling by the anchor bolt 2, a base metal fitting 4, and an upper portion fixed to the base metal fitting 4. A columnar insulator 5 and a support fitting 6 that is fixed to the lower portion of the insulator 5 and supports the rigid electric train line 31 are provided.
[0008]
A pair of anchor bolts 2 are fixed at a distance from each other in the direction of extension of the train line, and a pair of receiving metal fittings 3 are fixed to the ceiling by each anchor bolt 2. The lower surface of the receiving metal fitting 3 is a cylindrical surface 3a having an axial center in the extending direction of the train line when fixed to the ceiling.
[0009]
The base metal fitting 4 is extended between the pair of receiving metal fittings 3 in the extending direction of the train line, and is attached to the ceiling by the anchor bolt 2 together with the receiving metal fittings 3 in the pair of bolt insertion holes 4a formed at both ends. Fixed. The bolt insertion hole 4a of the base metal fitting 4 has an inner diameter that allows the anchor bolt 2 to pass through with sufficient play. The base metal fitting 4 has an arc concave surface 4b that comes into surface contact with the cylindrical surface 3a of the receiving metal fitting 3, and the fixing angle with respect to the receiving metal fitting 3 is fixed to the cylindrical surface 3a in the relative free movement range between the bolt insertion hole 4a and the anchor bolt 2. Adjustable around. The insulator 5 is substantially cylindrical and has an upper end fixed to the center of the base metal fitting 4 in the direction of extension of the train line, and extends downward substantially vertically. The support bracket 6 is fixed at the lower end of the insulator 5 at the center, extends to the left and right in the direction orthogonal to the extension of the train line, and supports the rigid train line 31 at the lower part of the symmetrical position. As shown in FIG. 4, the support bracket 6 adjusts the support position of the pair of rigid train wires 31 by adjusting the fixing angle with respect to the seat bracket 3 integrally with the base bracket 4 and the insulator 5 around the cylindrical surface 3 a. Is possible. By this adjustment, the position of the pair of rigid train lines 31 can be adjusted to be parallel to the train track. As shown in FIG. 4, reference lines 3b and 4c are displayed on the side surfaces of the receiving metal fitting 3 and the base metal fitting 4, and the mutual inclination angles with respect to the standard position where the reference metal lines 3b and 4c are arranged in a straight line are shown. It can be confirmed by the deviation and the adjustment work can be easily performed. Moreover, it can carry out, without attaching the direction of the cylindrical surface 3a in the case of attachment.
[0010]
The support fitting 6 supports the rigid electric train line 31 at both ends. The support fitting 6 includes a mounting portion 6a that is fixed to the lower end of the insulator 5 with a bolt 5a, and arm portions 6b that extend left and right from both ends of the mounting portion 6a. The arm portion 6b rises slightly upward in the middle and extends horizontally, and supports the rigid electric train line 31 by clamp metal fittings 6c, bolts, and nuts 6d at the ends.
[0011]
An insulating cover 7 made of synthetic resin is interposed between the top plate 32a of the rigid train line and the support bracket 6. The insulating cover 7 is movable relative to the top plate 32 a in the direction of the train wire extension, and is fixed to the support fitting 6. As shown in FIGS. 5 and 6, the insulating cover 7 includes a pair of cover members 7a that can be mounted so as to sandwich the top plate 32a from both left and right ends of the top plate 32b. Each cover member 7a includes an upper plate 7b along the upper surface of the top plate 32a of the rigid train line, a side plate 7c along the left or right end surface of the top plate 32b, and a lower plate 7d along the lower surface of the top plate 32b. It has a U-shaped cross section and has a pair of locking projections 7e on the upper surface of the upper plate 7b. Each pair of locking projections 7e protrudes at a distance from each other so as to extend along both end faces of the arm portion 6b of the support metal fitting 6 in the train wire extending direction, thereby fixing the insulating cover 7 to the arm portion 6b of the support metal fitting 6. . The rigid train line 31 is slidable in the extending direction with respect to the insulating cover 7. The insulation performance is improved by interposing the insulating cover 7 between the rigid train wire 31 and the support bracket 6, and the rigid train wire 31 is also installed in a narrow space where a sufficient insulation interval cannot be secured between the ceiling T and the ceiling. Installation is possible.
[0012]
【The invention's effect】
As described above, in the present invention, the base metal fitting 4 is provided with the bolt insertion hole 4a through which the anchor bolt 2 penetrates with sufficient play, the lower surface of the receiving metal fitting 3 is the cylindrical surface 3a, and the upper surface of the base metal fitting 4 is provided. Is a circular arc concave surface 4b in surface contact with the cylindrical surface 3a, and the fixing angle with respect to the receiving metal fitting 3 can be adjusted around the cylindrical surface 3a in the range of relative movement between the bolt insertion hole 4a and the anchor bolt 2, so that the ceiling surface is narrow. It has the effect that it can be easily installed in an old tunnel that is not flat. In addition, the adoption of the insulating cover 7 enables the rigid train line system to be applied even in a narrow tunnel where the installation space is limited, and this has the effect of being able to cope with higher speed trains.
[Brief description of the drawings]
FIG. 1 is a front view of a rigid railway line device for a tunnel according to the present invention.
FIG. 2 is a side view of the rigid railway line device for tunnel according to the present invention.
FIG. 3 is a bottom view of the rigid railway line device for tunnel according to the present invention.
FIG. 4 is an explanatory diagram of an angle adjustment operation for a receiving metal fitting.
FIG. 5 is an enlarged front view of a rigid train line and an insulating cover.
FIG. 6 is a perspective view of an insulating cover.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Supporting device 2 Anchor bolt 3 Base metal fitting 3a Cylindrical surface 4 Base metal fitting 4a Bolt insertion hole 4b Arc concave surface 5 Insulator 5a Bolt 6 Support metal fitting 6a Mounting part 6b Arm part 6c Clamp metal fitting 6e Bolt, nut 7 Insulating cover 7a Cover member 7b Upper plate 7c Side plate 7d Lower plate 7e Locking projection 31 Rigid train line 32 Aluminum rigid body 32a Top plate 32b Holding plate 33 Trolley line T Tunnel ceiling

Claims (5)

An anchor bolt fixed to protrude downward on the ceiling of the tunnel;
A receiving metal fitting fixed to the ceiling with the anchor bolt in contact with the ceiling surface of the tunnel;
A base bracket fixed to the ceiling with the anchor bolt together with the receiving bracket in contact with the lower surface of the receiving bracket;
A columnar insulator whose upper part is fixed to the base metal fitting and extends downward,
The center is fixed to the lower part of this insulator, it extends to the left and right that are the direction perpendicular to the extension of the train line, and comprises a support bracket that supports the rigid train line at the lower part of the left and right symmetrical position,
The base metal fitting has a bolt insertion hole that allows the anchor bolt to penetrate with play ,
The lower surface of the receiving bracket in a fixed state to the ceiling is a cylindrical surface along the axis in the direction of extension of the train line,
The base metal fitting has an arc concave surface that is in surface contact with the cylindrical surface of the receiving metal fitting, and a fixing angle with respect to the receiving metal fitting is adjusted around the cylindrical surface in a range of relative movement between the bolt insertion hole and the anchor bolt. Is possible,
The support bracket is capable of adjusting the support position of the pair of rigid train lines around the cylindrical surface of the receiving bracket by adjusting a fixed angle with respect to the receiving bracket integrally with the base bracket. A device for supporting rigid railway lines for tunnels. The anchor bolts are fixed as a pair at intervals in the direction of extension of the train line,
The receiving bracket is fixed to the ceiling by each anchor bolt,
The base metal fitting is fixed between the pair of receiving metal fittings and a pair of bolt insertion holes formed at both ends thereof, together with the receiving metal fittings, and fixed to the ceiling by the anchor bolts,
The apparatus for supporting a rigid railway wire for a tunnel according to claim 1, wherein an upper end of the insulator is fixed at a center of the base metal fitting in the direction of extension of the train wire. Anchor bolts that are fixed so as to protrude downward on the ceiling of the tunnel, base brackets that are in contact with the ceiling surface of the tunnel and are fixed to the ceiling by the anchor bolts, and columnar insulators that are fixed to the top of the base brackets In the support device for a rigid railway wire for a tunnel, comprising a support bracket fixed to the lower part of the insulator and supporting the rigid train wire,
The rigid train line has a bowl-shaped cross section, and has a horizontal top plate protruding from the left and right ends at the top in the mounted state, and extends downward from the top plate and sandwiches the trolley wire between the bottom ends. A pair of clamping plates,
The support bracket comprises an arm portion that crosses the top surface of the top plate of the rigid train line, and a clamp bracket that grips both left and right edges of the top plate,
In addition, an insulating cover made of synthetic resin is fixed between the top of the rigid train line and the support bracket, and can be moved relative to the top of the rigid train line in the direction of extension of the train line and fixed to the support bracket. An apparatus for supporting a rigid railway line for tunnels, wherein the apparatus is interposed. The insulating cover is composed of a pair of cover members that can be mounted so as to sandwich the top plate from both the left and right ends of the top plate of the rigid train line,
Each of these cover members is a U-shaped cross section comprising an upper plate along the top surface of the top of the rigid train line, a side plate along the left or right end surface of the top plate, and a lower plate along the bottom surface of the top plate. The upper surface of the upper plate is provided with a pair of locking projections protruding at a distance from each other so as to extend along both end surfaces of the arm portion of the support metal fitting in the direction of the train line. The apparatus for supporting a rigid railway line for tunnels according to claim 3. An anchor bolt fixed to protrude downward on the ceiling of the tunnel;
A receiving metal fitting fixed to the ceiling with the anchor bolt in contact with the ceiling surface of the tunnel;
A base bracket fixed to the ceiling with the anchor bolt together with the receiving bracket in contact with the lower surface of the receiving bracket;
A columnar insulator whose upper part is fixed to the base metal fitting and extends downward,
The center is fixed to the lower part of this insulator, extends to the left and right in the direction perpendicular to the extension of the train line, and the support brackets that respectively support the rigid train line at the lower part of the symmetrical position,
An insulating cover interposed between the rigid train line and the support bracket so as to be movable relative to the rigid train line in the direction of extension of the train line, and
The base metal fitting has a bolt insertion hole that allows the anchor bolt to penetrate with play ,
The lower surface of the receiving bracket in a fixed state to the ceiling is a cylindrical surface along the axis in the direction of extension of the train line,
The base metal fitting has an arc concave surface that is in surface contact with the cylindrical surface of the receiving metal fitting, and a fixing angle with respect to the receiving metal fitting is adjusted around the cylindrical surface in a range of relative movement between the bolt insertion hole and the anchor bolt. Is possible,
The support bracket is capable of adjusting the support position of the pair of rigid train lines around the cylindrical surface of the receiving bracket by adjusting a fixed angle with respect to the receiving bracket integrally with the base bracket. A device for supporting rigid railway lines for tunnels.

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