JP2010168029A - Rigid electric traction support device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a support device suppressing height change of a trolley wire smoothly allowing displacement accompanying expansion/contraction in the wire extension direction of a rigid electric traction. <P>SOLUTION: The support device 1 supporting the rigid electric tractions M<SB>1</SB>, M<SB>2</SB>is constituted to be attached to the ceiling of a tunnel through an attaching member S. The support device 1 includes a support frame 2 horizontally fastened to the attaching member S by bolts, flange supports 3 respectively arranged in lower parts of both sides in the direction orthogonal to the wire extension direction of the support frame 2, and contact bodies 7 fixed on the flange supports 3 and mounted with flange parts M<SB>11</SB>, M<SB>21</SB>of the rigid electric tractions M<SB>1</SB>, M<SB>2</SB>. The flange supports 3 include horizontal shelf plates 6 opposing to each other through brackets 5. The contact bodies 7 are fixed onto step parts 6a of the shelf plates 6 by bolts 8. The contact bodies 7 are constructed of a high-strength brass-based alloy embedded with solid lubricant, have low friction resistance against the rigid electric tractions M<SB>1</SB>, M<SB>2</SB>supporting thereabove, and allow smooth relative displacement, and therefore height change of the trolley wire T can be suppressed. <P>COPYRIGHT: (C)2010,JPO&amp;INPIT

Description

  The present invention relates to a support device for supporting a rigid train line that grips a trolley line inside a narrow tunnel from the ceiling of the tunnel.

  Conventionally, there is a support member described in Patent Document 1 that supports a rigid train line. A plurality of support members for the rigid train lines are fixed to the ceiling of the tunnel at intervals along the track, and simultaneously support two rigid train lines that are parallel to the left and right. The rigid train line is a long aluminum mold material having a grip portion for gripping the trolley wire at the lower portion and a horizontal flange portion at the upper portion. A support member has a pair of support part which supports the lower part of a flange part about each rigid electric train line. The rigid train line is supported by placing a flange portion on the support portion, and has a structure that does not hinder movement in the extending direction. There are two types of rigid train lines, one having a saddle shape and the other having a T shape, and both have a flange portion at the top and are supported by a similar support method.

Japanese Patent Laid-Open No. 2005-008038

Since the rigid train line that supports the trolley wire has a large weight, the flange portion and the support are supported by directly placing the flange portion of the rigid train line on the support portion as in the conventional support device described above. The frictional resistance between the parts becomes excessive. For this reason, the displacement in the extending direction of the rigid train line due to the expansion and contraction due to the temperature change is hindered by the support part, and as a result, the rigid train line is bent between the support parts, and the change in the height of the trolley line is reduced. It becomes a cause to enlarge.
Accordingly, an object of the present invention is to provide a support device that smoothly allows a necessary displacement of a rigid train line and suppresses a change in the height of the trolley line.

In order to solve the above-mentioned problems, a rigid train wire support device according to the present invention includes a support frame 2 that is fixed substantially horizontally to a support structure, and a pair of flanges that are attached to the lower portions of both sides of the support frame 2 in the direction orthogonal to the extension line. A support portion 3 and a contact body 7 mounted on the flange support portion 3 and receiving the flange portions M ₁₁ and M ₂₁ of the rigid train lines M ₁ and M ₂ are provided. The contact member 7, by relative rolling or low friction sliding the flange portion _{M 11, M 21} of the rigid catenary _M 1, _{M 2,} facilitates displacement in the extension line direction of the rigid catenary _M 1, _{M 2} Tolerate.
On both sides of the support frame 2 in the direction perpendicular to the extension line, sub-contact bodies that are brought into contact with the side surfaces of the flange portions M ₁₁ and M ₂₁ of the rigid train lines M ₁ and M ₂ to perform relative rolling or low friction sliding are provided.
The contact body 7 and the sub-contact body that allow low friction sliding of the flange portions M ₁₁ and M ₂₁ are selectively composed of a high-strength brass alloy, a fluororesin, and MC nylon (registered trademark) embedded with a solid lubricant. To do.
As a contact body that allows smooth relative rolling of the flange portions M ₁₁ and M ₂₁ , a roller 14 that is rotatably supported so as to roll on the lower surface of the flange portion is used.
Flange M _11, as the sub contact body to permit smooth relative rolling of M _21, the flange portion M _11, the sub-roller is rotatably supported in a horizontal direction so as to roll on the side of the M ₂₁ 20 Is used.

In the present invention, a pair of flange support portions 3 and 11 are provided at lower portions on both sides of the support frame 2 in the direction orthogonal to the extension line, and contact bodies 7 and 14 are provided on the flange support portions 3 and 11, thereby providing rigid train lines M ₁ and M _2. Since the flange portions M ₁₁ and M ₂₁ are mounted on the contact bodies 7 and 14 so as to be smoothly moved relative to each other, the displacement of the rigid train lines M ₁ and M _{2 due to} the temperature change is not hindered, and the trolley wire T The change in height can be suppressed.
In addition, a sub-contact body such as a sub-roller 20 is provided at both lower portions in the direction perpendicular to the extending direction of the support frame 2 and is brought into contact with the side surfaces of the flange portions M ₁₁ and M ₂₁ of the rigid train lines M ₁ and M _2. The train lines M ₁ and M ₂ can move relatively smoothly.

1 is a longitudinal sectional view of a rigid train line device according to a first embodiment of the present invention. 1 is a side view of a rigid train line device according to a first embodiment. It is a longitudinal cross-sectional view of the rigid-train line apparatus which concerns on 2nd Embodiment of this invention. It is a side view of the rigid body line device concerning a 2nd embodiment. It is a longitudinal cross-sectional view of the rigid-train line apparatus which concerns on 3rd Embodiment of this invention. It is a side view of the rigid body line device concerning a 3rd embodiment. It is a top view of the rigid body line device concerning a 3rd embodiment.

A first embodiment of the present invention will be described with reference to the drawings.
1 and 2, a plurality of support devices 1 are fixed to the ceiling of a tunnel, which is a support structure, at intervals in the traveling direction of the train. Rigid catenary M ₁ indicated by a solid line in FIG. 1 as the cross-sectional shape of the Π-type, but rigid catenary M ₂ shown in phantom are those cross-sectional shape of the type T, both the upper horizontal flange portion M with a _{11, M 21.} Since the support device 1 has a structure for receiving and supporting the flange portions M ₁₁ and M ₂₁ , the support device 1 can be applied to both types of rigid train lines M ₁ and M ₂ in common.

The support frame 2 of the support apparatus 1 is fixed under the attachment member S fixed to the ceiling of a tunnel via a lever. The support frame 2 is a rectangular plate-like member that is fixed substantially horizontally. The support frame 2 includes a bolt hole 2 a for bolting to the mounting member S, and a pair of flange support portions 3 at both lower portions.
Each flange support portion 3 includes a bracket 5 fixed at a right angle to the lower portion of the support frame 2 with bolts 4, a shelf plate 6 fixed horizontally from the lower portion of the bracket 5 toward the other bracket 5, and a shelf plate 6 and a contact body 7 fixed on the upper surface. The shelf board 6 has a stepped portion 6 a at the inner edge, and a contact body 7 is fixed on the stepped portion 6 a with a bolt 8. The contact member 7 is embedded solid lubricant is composed of high-strength brass alloy plate, small contact resistance with the rigid catenary M _1, M _2, a smooth relative displacement of the rigid catenary M _1, M ₂ Allow. The contact body 7 may be made of a fluororesin or MC nylon (registered trademark), and may be any material having a low frictional resistance that does not hinder the smooth relative displacement of the rigid train wire M.

The support device 1 supports and supports the flanges M ₁₁ and M ₂₁ of the rigid train lines M ₁ and M ₂ on the contact body 7. Since the contact body 7 having a small frictional resistance allows the temperature expansion and contraction without hindering the displacement of the rigid train lines M ₁ and M ₂ , the change in the height of the trolley line T can be suppressed.

A second embodiment of the present invention is shown in FIGS. In the following, in the figure, the same components as those of the previous embodiment are denoted by the same reference numerals and description thereof is omitted.
In the figure, the support device 10 has a pair of flange support portions 11 fixed to both lower portions of the support frame 2. The flange support portion 11 has a bracket 13 fixed to the support frame 2 with bolts 12. A highly rigid roller 14 as a contact body is rotatably supported on the bracket 13. A bearing 15 is incorporated in the bracket 13 and rotatably supports the shaft 14 a of the roller 14.

In the support device 10, the flange portions M ₁₁ and M ₂₁ of the rigid train lines M ₁ and M ₂ are supported on the roller 14. The roller 14 rolls along with the expansion and contraction of the rigid train lines M ₁ and M _{2 in} the extending direction, and allows the expansion and contraction smoothly.

A third embodiment of the present invention is shown in FIGS.
In the figure, the support device 16 includes a high-rigidity sub-roller 20 that is a sub-contact member that is adjacent to the support frame 2 with the flange support portion 11 sandwiched in the front-rear direction of the train wire extending direction. Each sub-roller 20 is rotatably supported in the horizontal direction while being prevented from coming off by a bearing 19 incorporated between a pair of upper and lower bracket plates 17 and 17 that are fixed to each other with a countersunk screw 18 facing the support frame 2 therebetween. The When the rigid train lines M ₁ and M ₂ supported on the rollers 14 expand and contract in the extending direction, the auxiliary roller 20 moves along the side of the displacement, and the side surfaces of the flange portions M ₁₁ and M ₂₁ of the rigid train lines M ₁ and M _2. Even if it touches, it rolls freely without resistance, so that expansion and contraction is allowed smoothly.

In the third embodiment of the present invention, the sub-contact body that contacts the side surfaces of the flange portions M ₁₁ and M ₂₁ of the rigid train lines M ₁ and M ₂ is composed of the sub-roller 20, but instead of this, A high-strength brass-based alloy plate embedded with a solid lubricant as a contact body in one embodiment, or a fluororesin or MC nylon may be adopted. A material having a small frictional resistance that does not prevent relative displacement may be used.

  The present invention is a rigid railway line support device that is effective for supporting a rigid railway line that supports a trolley line in a narrow tunnel so as to be extendable and contractible.

DESCRIPTION OF SYMBOLS 1 Support apparatus 2 Support frame 2a Bolt hole 3 Flange support part 5 Bracket 6 Shelf board 7 Contact body 10 Support apparatus 11 Flange support part 13 Bracket 14 Roller 16 Support apparatus 17 Bracket 20 Sub roller S Mounting member M ₁ Rigid electric train line M ₁₁ flange portion M ₂ rigid catenary M ₂₁ flange portion T trolley line

Claims (7)

The lower part has a gripping part that grips the trolley wire, and the upper part has a horizontal flange part. Rigid train line support device that supports
A support frame fixed substantially horizontally to the support structure;
A pair of flange supports attached to the lower portions on both sides of the support frame in the direction orthogonal to the extension line;
A contact body mounted on the flange support portion and receiving the flange portion of the rigid electric train line;
The contact body smoothly allows displacement of the rigid train line in the extending direction by causing the flange portion of the rigid train line to relatively roll or slide with low friction.   The sub-contact body which contacts the side surface of the flange part of a rigid-traffic line, and carries out a relative rolling or a low friction sliding is provided in the both sides of the extending direction of the said support frame at the orthogonal direction of a extending line. Rigid train line support device.   3. The rigid body wire support device according to claim 1, wherein at least one of the contact body and the sub-contact body is made of a high-strength brass alloy in which a solid lubricant is embedded.   At least one of the said contact body or a subcontact body is comprised with a fluororesin, The rigid body line support apparatus of Claim 1 or 2 characterized by the above-mentioned.   At least one of said contact body or subcontact body is comprised by MC nylon (trademark), The rigid body line support apparatus of Claim 1 or 2 characterized by the above-mentioned.   The rigid contact line support device according to claim 1, wherein the contact body is a roller rotatably supported so as to relatively roll on a lower surface of the flange.   3. The rigid body wire support device according to claim 2, wherein the sub-contact body is a roller rotatably supported so as to relatively roll on a side surface of the flange.

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