JP4530347B2 - Temporary fastening device for connecting trolley wires - Google Patents

Description

  The present invention replaces, for example, a connection fitting in which connection end portions of adjacent trolley wires are aligned and fixed integrally at a plurality of positions with a single connection fitting that abuts the end surfaces of the trolley wires and fixes them in one place. Trolley wire connection work for temporarily fastening between adjacent trolley wires until the existing connection fittings are removed, the parallel portions of the ends of the trolley wires are once cut, and new connection fittings are attached. The present invention relates to a temporary fastening device.

  Conventionally, the connection metal fittings of a trolley wire have the connection ends of the trolley wires arranged side by side, and the parallel portions are integrally fixed at a plurality of positions. This connecting bracket has a pair of ear pieces disposed between both sides of the ear middle piece interposed between the two train lines, a pair of ear pieces disposed on both sides in order to sandwich the train line on both sides of the ear middle piece, and the outer ear piece. It consists of bolts and nuts that penetrate the pieces and tighten each other (see Patent Document 1).

  In this connection fitting, since it is attached at multiple positions for strength, a point that partially suppresses the movement of the trolley wire, so-called hard points are generated at multiple positions, and a spark is generated at the time of contact with the pantograph, or the trolley wire Cause partial wear. Therefore, it is desirable to connect the end faces of the trolley wires at one place by using a single connection fitting having a necessary connection strength.

When replacing an existing connection bracket with a new connection bracket, the trolley wire is already in a state of high tension, so it is difficult to simply cut the parallel part and join the cut surfaces. Equipment that temporarily secures the trolley wire so that the tension is temporarily stored is required.
JP-A-6-166351

  In the present invention, the connecting portion of the trolley wire that has been stretched is temporarily cut in a state where tension is applied, and temporarily held, and the trolley wire can be drawn to bring the cut end surfaces into contact with each other. It is an object of the present invention to provide a butt tentative fastening device for replacing a trolley wire having a relatively simple structure that facilitates an operation of replacing a metal fitting with a new connection metal fitting.

In the first invention, the trolley wire connecting work temporary fastening device 1 is configured for the work of once cutting the connecting portions of the adjacent trolley wires T and T and then reconnecting the connecting end portions . The trolley wire connection work tacker 1, trolley wire T before cutting, respectively gripping the connecting end portion of the T at the two end fittings 3. One holding fitting 3 is fixed to one end of the temporary fixing frame 2 along the trolley line T, and the other holding fitting 3 is supported at the other end of the temporary fixing frame 2 so as to be movable along the trolley line T. To do. The other end fittings 3, by extending and retracting the hydraulic cylinder 12, the temporarily fixed frame 2 above the trolley wire T is moved closer to one of the end fittings 3 I along. One end of the trolley wire gripped by the other gripping bracket 3 by the hydraulic cylinder is held by one gripping bracket 3 while the ends of the trolley wires T, T after the cutting are held by the two gripping brackets 3, 3. It joined to the end surface of the gripped trolley wire.
In the second invention, the temporarily fixed frame 2, extends along the trolley wire T, and a pair of parallel guide bars 4, 4 which face each other at intervals in the vertical direction, the opposite of these guide bars 4, 4 And a pair of fixed pieces 5 and 6 for connecting the end portions to each other, and a movable piece 7 that is slidably supported along the guide bar 4 through the guide bar 4 between the fixed pieces 5 and 6. To do. One holding fitting 3 is fixed to one fixed piece 5, the other holding fitting 3 is fixed to the movable piece 7, and a hydraulic cylinder 12 is disposed between the movable piece 7 and the other fixed piece 6.
In the third aspect of the invention, the temporary fixing frame body 2 is suspended from the suspension wire M by the suspension fitting 10.
In the fourth invention, the anti - repellent member 13 extending between the trolley wire T and the frame body 2 is attached to the front and rear positions on the trolley wire sandwiching the planned cutting position of the trolley wire T, and the distance between the two is fixed. To prevent splashing when cutting.

  In the present invention, the adjacent trolley wires are respectively gripped by gripping metal fittings, and the two are temporarily fixed via a frame, so that the tension of both trolley wires can be entrusted to them and connected from the connecting portion of the trolley wires. The bracket can be removed and cut at one point, and the trolley wire can be pulled together with the hydraulic cylinder to butt the cut end faces, and new connection brackets can be easily installed, eliminating the need for extensive equipment. There is an effect that the mounting work can be performed.

An embodiment of the present invention will be described with reference to the drawings.
1 to 4, tacker 1, trolley wire T adjacent connected together side by side ends laterally attached to the connecting portion of the T. The tacker device 1 is configured trolley wire T, the end fitting 3 which respectively grip T, 3 is provided in the temporarily fixed frame 2. As shown in FIGS. 5 and 6, temporarily fixed frame 2 is fixed piece a pair of parallel spaced vertically between 5,6 guide bars 4, 4 is fixed to the movable piece 7 the guide bar 4 It is penetrated and supported slidably. The movable piece 7 is pressed against a collar 9 attached between the movable piece 7 and the fixed piece 6 by a compression spring 8 whose one end is locked to the guide bar 4. The fixed piece 5 and the movable piece 7 are suspended from the suspension line M by a suspension fitting 10.

  The holding metal fitting 3 is fixed to the mounting recesses 5 a and 7 a in the middle of one fixed piece 5 and the movable piece 7 with a bolt 11. The holding metal fitting 3 includes a long ear piece 3a that causes the lower end claw to bite into the groove of the trolley wire T, and a short ear piece 3b that opposes the long ear piece 3a across the trolley wire T and similarly causes the lower end claw to bite into the groove. And a bolt 3c for fastening the short ear piece 3b to the long ear piece 3a.

  Hydraulic cylinders 12 are respectively provided at both upper and lower ends of the movable piece 7. The hydraulic cylinder 12 extends so that the actuating rod 12a brought into contact with the other fixed piece 6 protrudes by hydraulic pressure and moves the movable piece 7 to the connection fitting C1 side against the spring 8. The hydraulic cylinder 12 is connected to a pump (not shown) and is manually operated.

  Between the trolley wire T and the guide bar 4, two repelling members 13 for fixing a mutual interval are attached. The anti-repellent member 13 is attached to different guide bars 4 with the planned cutting portions of the trolley wire T disposed therebetween. As shown in FIG. 7, the anti-repellent member 13 has an insertion ring 13b inserted into one end portion of the connecting rod 13a and fastened with a butterfly bolt 13c, and at the other end portion of the connecting rod 13a. It has a U-shaped bolt 13d that inserts a parallel portion of the adjacent trolley wire T and prevents it from coming off with a presser plate 13e.

In the temporary fastening device 1, the eye of the fixed piece 5 and the movable piece 7 is suspended from the suspension wire M by the hanging metal fitting 10 by being arranged in a parallel portion of the end portion of the connection portion of the adjacent trolley wires T and T. The trolley wire T is gripped by the gripping fitting 3 of the fixed piece 5 and the movable piece 7, and the anti-repellent members 13 are attached to the approximate cutting positions at the center of the parallel portions of the adjacent trolley wires T, that is, both sides of the central double ear C 1. . After adjusting the operating rod 12a of the hydraulic cylinder 12 to contact the fixed piece 6, the hydraulic cylinder 11 is operated to slightly move the gripping bracket 3 away from the fixed piece 6, so that the fixed piece 5 and the movable piece 7 are moved. Leave the tension of the trolley wire T. In this state, the double ear C1 between the holding metal fittings 3 and 3 is removed, and the trolley wires T and T are cut together with a cutting tool at approximately the center between the anti-repellent members 13 and 13. At this time, since the distance between the trolley wires T and T and the trolley wires T is fixed by the anti-repellent member 13, the anti-repelling force due to the repulsive force accumulated for twisting and winding is prevented. To do. The trolley wires T and T are arranged such that the burr on the cut end face is removed, the groove position is matched, the movable piece 7 is moved by the hydraulic cylinder 12, the cut end face is brought into contact with each other, and a new connection is made. A metal fitting C2 is attached to connect the trolley wires T and T.
In this way, it is possible to easily replace the connection fitting in a tensioned state without replacing the existing trolley wire T and without using a large-scale facility. Since the attached connection fitting is single at the connection portion, the so-called hard point that partially suppresses the movement of the trolley wire is also single, and the hard point on the train line is reduced as a whole.
In order to prevent the temporary fastening device 1 from being accidentally detached from the trolley wires T and T during operation and the trolley wires T and T are not separated, the suspension wire M and the connecting portion of the trolley wires T and T are connected to the connecting wire 14, You may connect with the attachment metal fitting 15.

  The present invention can be widely used to temporarily connect adjacent trolley wires during an operation of once cutting a stretched trolley wire, butting the end faces together and fixing with a connection fitting.

It is a front view of the use condition of the temporary fixing apparatus which concerns on this invention. It is a front view of a temporary fixing device. It is a top view of a temporary fixing device. It is a side view of a temporary fixing device. It is a front view of a holding metal fitting. It is VI-VI arrow line view of FIG. It is a front view of a repelling stopper metal fitting.

Explanation of symbols

1 tacker 2 temporarily fixed frame 3 end fittings 4 guide bar 5 hanging fixing piece 6 fixed piece 7 movable piece 8 spring 10 fitting 11 volt 12 hydraulic cylinder 13 hit stop members T trolley wire

Claims (4)

In the temporary fastening device for trolley wire connection work for the work of reconnecting by connecting the connection ends of the trolley wire once cut the connection portion of the adjacent trolley wire,
Two gripping brackets each gripping the connecting end of the trolley wire before cutting ,
The one holding fitting is fixed to one end, extends along the trolley wire, and the other holding fitting is supported temporarily so that the other holding fitting can move in the direction along the trolley wire,
A hydraulic cylinder that can be extended and contracted so as to move the other gripping bracket closer to the one gripping bracket along the trolley line on the temporary fixing frame body;
While detained each end of the tension of took the trolley wire after cutting by two of said end fitting, the hydraulic cylinder by the other of the end fitting is gripped trolley line trolley end faces said one end fitting grasps the A temporary fixing device for connecting a trolley wire, characterized by being joined to an end face of the wire. The temporary fixing frame body extends along the trolley line, and a pair of parallel guide bars facing each other with an interval in the vertical direction;
A pair of fixed pieces in which opposite ends of these guide bars are coupled to each other, and the one holding fitting is fixed to one of the guide bars;
A movable guide bar penetrates between these fixed pieces and is supported slidably along the guide bar, the other gripping bracket is fixed, and the hydraulic cylinder is disposed between the other fixed pieces. The trolley wire connecting work temporary fixing device according to claim 1, further comprising a piece. The temporary fixing device for trolley wire connection work according to claim 1 or 2, further comprising a hanging metal fitting for hanging the temporary fixing frame body to a suspension line. The longitudinal position of the trolley line sandwiching cut position of the trolley wire, respectively mounted over therebetween so as to fix the distance between the trolley wire and the temporary fixing frame, the splash preventing member for preventing the splashing during cutting The temporary fixing device for trolley wire connection work according to any one of claims 1 to 3, further comprising:

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