JPH07291000A - Tensile force temporary receiving device for stringing - Google Patents

Abstract

PURPOSE:To correspond to high lift work by applying tensile force by electric power force by way of mechanizing tensile force temporary receiving work of stringing and improving workability. CONSTITUTION:A band 2 is fixed on a utility pole P. A bracket 3 is fixed on the band 2. A small pulley 4 is fixed on one end side of the bracket 3, and a vise 5 is fixed on the other end side. A trigger fitting 6 is connected to a yoke Y to which a wire rope W1 to draw is connected. A chain 8 is drawn around by driving the vise 5 by an electric torque wrench 9 by way of suspending the chain 8 between a large pulley 7 installed on the trigger fitting 6, the vise 5 and the small pulley 4. A nut is fixed on the upper end of a spindle projected from a case of the vise 5, and the electric torque wrench 9 has a socket free to engage with the nut. A reaction force receiver 10 is installed between a main body of the electric torque wrench 9 and the bracket 3, and rotational reaction force following driving of the vise 5 is supported.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention tentatively receives the tension of an existing overhead wire that is retained on a utility pole or the like to perform automatic tension on the utility pole side in maintenance and inspection work of an automatic tension adjusting device for a suspension overhead wire of a railway line. The present invention relates to a temporary tension receiving device for an overhead wire for eliminating maintenance load on an adjusting device and the like and facilitating maintenance and inspection work.

[0002]

2. Description of the Related Art Conventionally, as a temporary tension receiving device for overhead lines,
It is known to use a manual wire tensioner. In this tensioner, a handle is hooked on a main shaft of a pulley in a ratchet manner, and the handle is repeatedly turned to wind up a chain and pull an overhead wire.

[0003]

However, the above-mentioned conventional wire tensioner has a drawback in that it is poor in workability because it is a manual type, it requires a lot of labor, and it is not suitable for work in high places. Therefore, it is an object of the present invention to mechanize the temporary tension receiving work so as to apply tension by electric force, improve workability, and cope with work in high places.

[0004]

In the present invention, in order to solve the above problems, a utility pole band 2 fixed to a utility pole P is used.
A fitting 3 fixed to the utility pole band 2, a small pulley 4 fixed to one end of the fitting 3, a tensioner 5 fixed to the other end, and an overhead wire to be pulled are connected. The puller metal fitting 6 fixed to the fixed yoke Y, the large pulley 7 attached to the puller metal fitting 6, and the tensioner 5, the large pulley 7, and the small pulley 4 are wound around the three parts, A chain 8 drawn around by the wire tensioner 5 and an electric torque wrench 9 for driving the wire tensioner are provided to form a temporary wire tension receiving device,
The wire tensioner 5 is provided with a nut 29 fixed to one end of the main shaft 22 protruding from the main body case 28, and the electric torque wrench 9 is detachable from the nut 29 of the main shaft 22 of the tensioner 5. With a rotating shaft having 30
The reaction force receiving arm 10 is provided so as to be installed between the main body and the mounting member 3.

[0005]

When the work is performed by using the temporary wire tension receiving device 1 of the present invention, first, the telephone pole band 2 is fixed to the telephone pole P, and the telephone pole band 2 is provided with the small pulley 4 and the wire tensioner 5. Fix the mounting bracket 3 holding the. A chain 8 is preliminarily laid between the tensioner 5, the large pulley 7, and the small pulley 4.
Then, the pull tab 6 to which the large pulley 7 is connected is connected to the yoke Y connected to the overhead wire to be pulled. When the end of the reaction force receiving arm 10 of the wire tensioner 5 is brought into contact with the side surface of the fitting 3 and the wire tensioner 5 is started, the overhead wire is pulled and the tension is temporarily received. Therefore, the load on the holding equipment such as the automatic tension adjusting device holding the overhead wire is reduced, so that replacement of the equipment and maintenance and inspection work can be easily carried out.

[0006]

An embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a plan view of a state in which the temporary tension receiving device for overhead lines is used,
2 is a plan view of a part of the temporary tension receiving device for the overhead wire, FIG. 3 is a side view of a part of the temporary tension receiving device for the overhead wire, FIG. 4 is a vertical sectional view of the tensioner, and FIG. It is a front view of a part of receiving device.

In FIG. 1, an overhead wire (not shown) such as a suspension overhead wire of a train line is connected to a pulling wire W via an insulator I and a yoke Y, and the pulling wire W is passed through equipment such as an automatic tension adjusting device. It is assumed that it is retained on a utility pole. By temporarily receiving the tension applied to the pulling wire W by the temporary tension receiving device 1 to reduce the tension, the pulling wire W or the automatic tension adjusting device prior to this and other various equipments are replaced and maintenance inspection work is performed. I shall.

The temporary tension receiving device 1 includes a utility pole band 2 fixed to a utility pole P, a mounting bracket 3 fixed to the utility pole band 2, and a small pulley 4 fixed to one end of the mounting bracket 3. A wire tensioner 5 fixed to the other end side, a pull metal fitting 6 fixed to a yoke Y to which an overhead wire to be pulled is connected,
The large pulley 7 attached to the puller fitting 6 and the chain 8 which is hung between the tensioner 5, the large pulley 7, and the small pulley 4 and is routed by the tensioner 5, and the tensioner An electric torque wrench 9 for driving the device, and a reaction force receiving arm 10 installed between the main body of the electric torque wrench 9 and the mounting member 3.

The utility pole band 2 includes a band fitting 11 and a holding fitting 12. The band fitting 11 has a curved portion 13 that holds the electric pole P, and bracket portions 14 at both ends that extend to face each other. The press fitting 12 has a bending portion 15 that faces the bending portion 13 of the band fitting 11 and holds the electric pole P, and an overlapping portion 16 fixed along the inside of the bracket portion 14.

The mounting bracket 3 comprises a body 17 made of sheet metal bent in a U-shape, to which a supporting leg 18 and a supporting piece 19 of the electric torque wrench 9 are mounted, and which is mounted on the bracket portion 14 of the telephone pole band 2. , Are fixed by bolts 20 and 21 penetrating the bracket portion 14. The small pulley 4 is fixed to one end of the main body 17 of the fitting 3.

The wire tensioner 5 is fixed to the other end of the main body 17 of the fitting 3. As shown in FIG. 4, the tensioner 5 transmits the rotation of the main shaft 22 to the chain pulley 25 via gears 23 and 24. A ratchet gear 26 is attached to the main shaft 22 and is prevented from rotating in one direction by a ratchet pawl 27. The ratchet gear 26
Is inserted into the main shaft 22 so as to be rotatable relative to the main shaft 2.
The nut 29 screwed onto the brake plate 3
When it is tightened in the axial direction via the brake linings 33 and 34 between the first and second shafts, it integrally rotates with the main shaft 22. The nut 29 having a square screw is screwed onto the upper end of the main shaft 22 protruding from the main body case 28, and when this is tightened, the ratchet gear 26 and the main shaft 22 rotate integrally to wind up the chain 8. When loosened, the main shaft 22 rotates relative to the ratchet gear 26.
One end of the chain 8 is locked to the body case 28 of the wire tensioner 5, and the other end of the chain 8 is engaged with the pulley 25.

The electric torque wrench 9 has a socket 30 at the tip of its rotating shaft, which is engageable with and disengageable from the nut 29 of the main shaft 22 of the tensioner 5. The electric torque wrench 9 is the support fitting 3
It is supported by the support piece 19 of the mounting member 3 via 1.

The reaction force receiving arm 10 extends obliquely downward from the main body of the electric torque wrench 9 as shown in FIG.
The lower end portion is in contact with the mounting member 3.

When carrying out work using the temporary wire tension receiving device 1 of this embodiment, first, the utility pole band 2 is attached to the utility pole P.
Then, the fitting 3 holding the small pulley 4 and the wire tensioner 5 is fixed to the telephone pole band 2. A chain 8 is preliminarily laid between the tensioner 5, the large pulley 7, and the small pulley 4. Then, the pull tab 6 to which the large pulley 7 is connected is connected by a bolt to the yoke Y to which the overhead wire to be pulled is connected. When the end of the reaction force receiving arm 10 of the wire tensioner 5 is brought into contact with the side surface of the mounting member 3 and the wire tensioner 5 is started, the overhead wire is pulled, and the tension is temporarily received and applied to the anchor wire W. Tension is reduced.

[0015]

As described above, in the present invention, the utility pole band 2 fixed to the utility pole P, the mounting metal fitting 3 fixed to the utility pole band 2, and the one end side of the mounting metal fitting 3 are fixed. Small pulley 4 and tensioner 5 fixed to the other end
A pull metal fitting 6 fixed to a yoke Y to which an overhead wire to be towed is connected, a large pulley 7 attached to the pull metal fitting 6, the tensioner 5, the large pulley 7, and the small pulley 4. A chain 8 that is hung between three parties and pulled around by the tensioner 5.
And an electric torque wrench 9 for driving the wire tension device to constitute a tension receiving device for an overhead wire, and the tension wire 5 has a nut 29 fixed to one end of the main shaft 22 protruding from the main body case 28. The electric torque wrench 9 is equipped with a tensioner 5
The nut 29 of the main shaft 22 is provided with the rotating shaft having the socket 30 which can be engaged and disengaged, and the reaction force receiving arm 10 is provided so as to be installed between the main body and the mounting bracket 3. The temporary tension receiving work is mechanized by the force, the workability is improved, and the work at high places can be coped with.

[Brief description of drawings]

FIG. 1 is a plan view of a state in which a temporary tension receiving device for an overhead wire is used.

FIG. 2 is a plan view of a part of a temporary wire tension receiving device.

FIG. 3 is a side view of a part of the temporary tension receiving device for an overhead wire.

FIG. 4 is a vertical cross-sectional view of the wire tensioner.

FIG. 5 is a front view of a part of the temporary tension receiving device for an overhead wire.

[Explanation of symbols]

 P Utility pole 2 Utility pole band 3 Mounting bracket 4 Small pulley 5 Stretcher 6 Puller bracket 7 Large pulley 8 Chain 9 Electric torque wrench 10 Reaction force receiving arm 22 Spindle 28 Case 29 Nut 30 Socket Y Yoke

 ─────────────────────────────────────────────────── ─── Continuation of front page (72) Inventor Shoichi Nakatani 6-5-19 Minami-Shinagawa, Shinagawa-ku, Tokyo Sanwa Tech Co., Ltd. (72) Masato Osawa 2703, Nakaokamoto, Kawachi-cho, Tochigi Prefecture Wa Tech Co., Ltd. Utsunomiya Factory

Claims (1)

[Claims] 1. A utility pole band fixed to a utility pole, a mounting fixture fixed to the utility pole band, a small pulley fixed to one end side of the mounting fixture, and a tensioner fixed to the other end side. , A pull metal fitting fixed to a yoke to which an overhead wire to be towed is connected, a large pulley attached to this pull metal fitting, and the wire tensioner, the large pulley, and the small pulley are hung around A chain drawn by a wire tensioner and an electric torque wrench for driving the wire tensioner are provided, and the wire tensioner is provided with a nut fixed to one end of a main shaft protruding from the main body case. The lux wrench has a rotating shaft having a socket that can be engaged with and disengaged from a nut of the main shaft of the wire tensioner, and a reaction force receiving arm that is installed between the torque wrench body and the mounting bracket. Tension temporary receiving device for overhead lines.