JPH085861Y2 - Fasteners for auxiliary catenary wire retractor - Google Patents

Description

[Detailed Description of the Invention] [Industrial field of application] The present invention relates to a fastener for an auxiliary catenary line anchoring device used in a so-called compound type train line, and particularly for a train line located below the auxiliary catenary line. The present invention relates to a fastening tool for an auxiliary catenary wire anchorage device that is fastened to a utility pole or the like built along a line by a wire together with a curved pulling metal to be fastened.

[Prior Art] A fastening device for an auxiliary catenary cable anchoring device that prevents electrolytic corrosion caused by a circulating current caused by a potential difference generated when a train passes along with an electric line that is retained together with the auxiliary catenary line. It is disclosed in Japanese Utility Model Laid-Open No. 63-123330.

This fastener includes a fastener provided with a holding portion having a semicircular end face recessed portion and a bolt insertion hole at the tip of a support arm that is vertically attached to the attachment portion to the retaining wire, and a fastener body of the fastener body. A holding piece having a semicircular end face concave portion corresponding to the concave portion of the holding portion hingedly coupled to the tip and a bolt insertion hole, and a protruding piece having a bolt insertion hole formed therein, and a tube divided in two in the axial direction. -Shaped insulating cover, the holding part and the holding piece are overlapped, and the auxiliary catenary wire in which the insulating cover is fitted by the two recesses is sandwiched between the through holes formed and inserted into the two insertion holes communicating with each other. The nut is tightened and fixed to the bolt.

[Problems to be Solved by the Invention] However, in the fastening device for the auxiliary catenary wire described in the above publication, the concave portion formed in the support arm is opened in a direction perpendicular to the vertical direction thereof. It has a stopper at the tip of which a holding piece is hinged.

Therefore, a bolt insertion hole for connecting the holding piece on the holding portion side is formed in the support arm, and there is a problem that the suspension strength of the support arm is reduced.

In addition, during the fastening work, it is necessary to rotate the holding piece that has hung down and rotate it 180 degrees upward so that it is overlapped with the holding part, and the nut that is screwed to the bolt is attached to the retention rod and the holding piece. Since it will be located between and, the tightening tool for tightening the nut is disturbed by them,
Further, the insulating cover is divided into two parts, and each divided body must be held between the holding part and the holding piece while being pressed against the auxiliary catenary wire, which is a problem of extremely poor workability. .

The present invention has been made in view of the above point, and it is of course that the insulation from the electric power line is perfect, and the auxiliary catenary detention line has sufficient hanging strength and is extremely easy to fasten. A fastener for a device is provided.

[Means for Solving the Problem] The present invention provides a stopper fitting provided with a holding portion having a recess and a bolt insertion hole at the tip of a supporting arm that is vertically provided on a mounting portion to a straining rod, and the holding portion. A holding piece hinged to the holding portion on a side facing the projection having a projection formed with a recess corresponding to the recess and a bolt insertion hole corresponding to the bolt insertion hole, and a side opposite to the projection with the recess interposed therebetween, A cylindrical insulating cover is provided, and an auxiliary catenary wire in which a sandwiching piece is overlapped with the sandwiching portion and the insulating cover is fitted is sandwiched between the two recesses and is inserted into the two bolt insertion holes communicating with each other. In a fastener of an auxiliary catenary wire retractor for tightening and fastening a nut to a bolt, the fastener has a recess formed in the vertical direction of the support arm and one opening end of the recess. Protruding on the edge Further, the bolt insertion hole is formed in the projecting piece extending in the direction perpendicular to the vertical direction of the support arm, and the insulating cover is divided into two in the axial direction so that the divided body is hinged at one joint edge. The above-mentioned structure is used to solve the above-mentioned problems.

[Operation] After inserting the auxiliary catenary wire into the insulating cover with the divided body opened, the divided body is closed and fitted, and it is sandwiched and sandwiched between the respective holding portions and the holding pieces in the expanded state. Insert the bolt into the bolt insertion hole formed in the sandwiching part and the sandwiching piece that rotate and close each other and communicate with each other, and then tighten the nut to connect the sandwiching part and the sandwiching piece to each other. Fasten.

[Embodiment] Next, an embodiment of the present invention will be described with reference to the drawings.

The drawings show an embodiment of the present invention, in which a fastener 1
Is mainly composed of a stopper 2, a holding piece 3, and an insulating cover 4.

The stopper 2 has one U bolt 6 at the tip of the pulling rod 5.
The support arm 8 is vertically provided at substantially the center of the mounting portion 7 and has a T-shape as a whole, and the holding portion 9 is integrally provided at the tip of the support arm 8. This holding part 9 has a semicircular recess 10 on the end face that opens toward the tip and a bolt insertion hole.
It has a projecting piece 12 projecting from one opening edge of a recess 10 extending in a direction perpendicular to the direction in which the support arm 8 having 11 is formed.

The holding piece 3 has a semicircular concave portion 15 having the same width as the holding portion 9 and corresponding to the concave portion 10 of the holding portion 9, and this concave portion.
A projecting piece 14 facing the projecting piece 12 is provided on one opening end edge of 15, and a bolt inserting hole 13 corresponding to the bolt inserting hole 11 is formed in the projecting piece 14, and the holding portion 9 has a concave portion 10. Clamping piece 14
Is hinged on the opposite side.

The insulating cover 4 has an inner diameter substantially equal to the outer diameter of the auxiliary catenary wire 16 made of a hard synthetic resin having electrical insulation such as polycarbonate resin, and the outer diameter of the through hole is formed by the recesses 10 and 15. It is formed in a cylindrical shape having a diameter substantially equal to that of the holding piece 3, has a length equal to the width of the holding piece 3 and the holding portion 9, and is provided with collars 17, 17 at both ends. In addition, it is divided into two in the axial direction and these divided bodies 18,1
8 is hinged at one joint edge 19 so that it can be opened and closed freely.

As shown in FIG. 5, the fastener 1 having such a structure is built along the track, for example, along with the curved metal fitting 21 of the electric line 20 suspended below the auxiliary catenary wire as in the conventional one. It is used by being attached to an anchor rod 5 connected to the tip of a wire 23 that is retained on a utility pole 22 or the like.

In use, first, the attachment portion 7 is attached to the retracting rod 5 using the U bolt 6. Then, after inserting the fastening portion of the auxiliary catenary wire 16 into the insulating cover 4 in which the divided bodies 18 and 18 are expanded, the divided bodies 18 and 18 are closed and fitted, and this is held in the expanded state. 9 and the recesses 10 and 15 of the holding piece 3, respectively.
Sandwich between. Next, the holding piece 3 is pivotally closed by a hinge to join the projecting pieces 12 and 14 to each other, the bolt 24 is inserted into the communicating insertion holes 11 and 13, and the nut 25 is tightened using a wrench or the like. The clamping portion 9 and the clamping piece 3 are tightened and the auxiliary catenary line 16 is fixed.

[Effects of the Invention] The present invention secures the auxiliary catenary wire via the insulating cover, so that the insulation from the electric power line is complete, and also the holding part and the holding piece of the fastener connected by the hinge. A bolt inserted through two bolt insertion holes that are in communication with each other, sandwiching an auxiliary catenary wire fitted with an insulating cover between the two recesses formed in The fastening work can be done by simply tightening the nut on the
In particular, the concave part of the holding part is formed toward the vertical direction of the support arm, and the holding part is hinged so that the joint surface with the holding arm faces the direction perpendicular to the vertical direction of the support arm. Not only can it be opened and closed simply by rotating it, but also when tightening the nut, fastening tools such as spanners can be carried out very easily without being obstructed by the attachment part or the holding part. . In addition, since the insulating cover is divided into two parts and each divided body is hinged at one joint edge, it is necessary to fit the auxiliary catenary wire and sandwich it between the holding part and the holding piece. Can be easily performed with one hand. Further, the support arm vertically provided on the mounting portion does not have a bolt insertion hole or the like formed therein, so that the suspension strength does not decrease and may be damaged by the weight of the auxiliary catenary wire and vibrations when passing the train. There is none.

[Brief description of drawings]

1 is a front view, FIG. 2 is a side view, and FIGS. 3 and 4 are showing a closed state and an open state of respective insulating covers. FIG. 5 is a perspective view and FIG. 5 is an explanatory view showing a usage state. 1 ... Stopper, 2 ... Stopper, 3 ... Holding piece, 4 ... Insulating cover, 5 ... Retaining rod, 7 ... Supporting part, 8 ... Supporting arm, 9 ... Holding part, 10 ...... Concave part, 11 ...... bolt insertion hole, 13 ...... bolt insertion hole, 14 ...... projection piece. 15 …… Concave, 16
...... Auxiliary catenary wire, 18,18 ...... divided body, 19 ...... joint edge, 24 ...... bolt, 25 ...... nut.

Claims (1)

[Scope of utility model registration request] 1. A holding part (9) having a recess (10) and a bolt insertion hole (11) is provided at the tip of a support arm (8) which is hung vertically on a mounting part (7) to a retracting rod (5). With a retaining metal fitting (2), a recess (15) corresponding to the recess (10) of the holding portion (9), and a bolt insertion hole (13) corresponding to the bolt insertion hole (11). A holding piece (3) which has a (14) and is hinged to the holding part (9) on the side facing the projecting piece (12) with the recess (15) interposed therebetween, and a cylindrical insulating cover (4). ) And an auxiliary catenary wire (16) in which a holding piece (3) is placed on the holding portion (9) and the insulating cover (4) is fitted, is sandwiched between the two recesses (10, 15). Auxiliary catenary wire drawing in which the nut (25) is fastened and fixed to the bolt (24) inserted through the two bolt insertion holes (11, 13) communicating with each other. In the fastener of the retaining device, the recess (10) of the fastener (2) is formed in the vertical direction of the support arm (8) and one opening edge of the recess (10). The bolt insertion hole (11) is formed in a projecting piece (12) extending in a direction perpendicular to the vertically extending direction of the supporting arm (8) projecting from the above, and the insulating cover (4) is divided into two in the axial direction. Being divided into those (18,1
8) A fastener for an auxiliary catenary wire retractor, characterized in that one joint edge (19) is hinged.