JPS6328816B2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a rigid overhead wire device for supporting contact wires and its connection structure, which facilitates the installation of contact wires and enables strong connections without welding. It is characterized by making it.

[Prior Art] A structure in which a pair of J-shaped cross-section rods are abutted against each other and a contact wire is gripped by the teeth at the leg ends is known in Japanese Utility Model Publication No. 51-23889. . With this structure, when attaching the contact wire, it is difficult to set the groove of the contact wire accurately at the position of the teeth on both legs. Sometimes it's too much, sometimes it's not enough. In that case, the contact wire will be installed at an angle. Since the contact wire is a long metal rod, this structure does not make it easy to install the contact wire or correct incorrect installation.

The above-mentioned known example does not mention the connection structure of the formed rod. Conventionally, all connections were welded to prevent them from becoming hard spots during current collection. However, this welding is carried out in a narrow passage underground or above a girder, with various work teams coming and going, and is therefore fraught with many difficulties.

[Problems to be solved by the invention] A stopper is provided between a pair of molded rods,
The inserted contact wire should have its groove aligned exactly with the teeth of the forming rod.

When connecting formed rods, the leg connection part is sandwiched between an inner contact plate with no clearance that matches the width of the groove on the leg side, and a corresponding outer contact plate, and the bolts are tightened. At this time, the ends of the pair of molded rods are crossed so that the connecting portion of one becomes the smooth portion of the other, thereby preventing the occurrence of hard spots.

[Example] The drawings will be explained. The molded rod 1 has a J-shaped cross section with a top side 1a and a leg side 1b. The leg side ends are toothed, and a protruding edge 1C is provided on the inside thereof. A pair of these molded rods are assembled symmetrically, the opposite ends of the top sides 1a are abutting edges, and the contact wire T is held between the teeth. bolt 2
penetrates the central box-shaped space and integrates the two. At this time, the contact wire inserted between the opposing tooth parts has a protruding edge 1c.
As long as the groove is in contact with the tooth, the groove should be in a position corresponding to the tooth. Therefore, the trouble of positioning the contact wire is eliminated. The box-shaped space increases the overall strength of the rigid overhead wire, and is also useful for lengthening the support span.

FIG. 3 shows another embodiment in which a spring 3 is inserted around the outer periphery of the bolt 2. As a result, the pair of molded rods can be temporarily assembled in advance and transported to the construction site. When a contact wire is attached horizontally to the side of a running girder, such as in a monorail, the upper molded rod may sag under its own weight, leaving both the upper and lower teeth closed, but even in this case, open them. This makes it easier.

Figures 4, 5 and 6 show the connection structure. The end of one molded rod is abutted against the end of the other molded rod, and the inner and outer abutment plates 4, 4 are applied to both sides of the leg side 1b over this connection portion, and are integrated with the through bolts 5. The inner contact plate shall be able to be fitted into the U-shaped groove of the formed rod without any clearance. Further, as shown in FIG. 6, the pair of molded rods is made such that one end protrudes appropriately from the other end, and the positions of the connecting portions of the two rods are made to be different from each other. In other words, the connecting part on one side becomes the smooth part on the other, and since both are tightly integrated by the inner and outer contact plates,
The occurrence of hard spots is avoided.

[Effect] Attachment of contact wire during field work becomes extremely easy.
A strong connection is possible without welding, and there is no risk of hard spots.

[Brief explanation of drawings]

Fig. 1 is a side view of the present device, Fig. 2 is a cross-sectional view taken along AA, Fig. 3 is a side view of another embodiment, Fig. 4 is a side view of the connection structure, Fig. 5 is a front view of the same, FIG. 6 is a layout diagram of the connecting portion. 1... Molded rod, 1a... Top side, 1b... Leg side,
1c...projection, 2...bolt, 3...spring, 4...
...Top plate, 5... Bolt, T... Tram line, G... Insulator.

Claims (1)

[Scope of Claims] 1. Consists of a pair of symmetrical molded rods formed into a J-shaped cross section with a top side and a leg side, the opposite ends of the top side are abutting edges, and a contact wire can be held between the ends of the leg sides. A box-shaped rigid overhead wire device that is provided with teeth and a protruding edge on the inside thereof, and is tightened between both leg sides with a penetrating bolt. 2. Consists of a pair of symmetrical molded rods with a J-shaped cross section formed by a top side and a leg side, the opposite ends of the top side are abutting edges, and the leg side ends are provided with teeth and a ridge on the inside thereof,
In a box-shaped rigid overhead wire system in which the legs are tightened with through-bolts, each formed rod end is connected to another formed rod, and the inner wire is fitted into the U-shaped groove of the formed rod by straddling the connection part. The front and back of the leg sides are sandwiched between the backing plate and the corresponding outer backing plate, each is fixed with a through bolt, and a pair of parallel molded bars are arranged so that one end protrudes from the other end. The connection structure of the box-shaped rigid body overhead wire system is characterized by: