JP3023501B2 - Jumper suspension system - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a jumper suspension system for suspending jumper wires of a plurality of transmission lines.

[0002]

2. Description of the Related Art A line-side yoke 71 of a conventional device of this kind is used.
For example, as shown in FIG. 4, arms 74 are radially protruded at four corners of a body 73 having a cross-section of a b-shape with an insulator connecting portion 72 protruding from the upper surface. A clamp 77 for holding the jumper wire 76 is attached to the clamp body 78 by a clamp body 78, which is the tip of an arm 74, a bolt 79, and a nut 80. The clamp body 82 is opposed to the wire receiving groove 75 of the clamp main body 78 by a press groove 81.
Is attached.

[0003]

However, the main body 73
Since the wire receiving groove 75 of the arm 74 projecting obliquely downward from the lower surface corner of the lower surface of the clamp 74 faces downward, the presser fitting 82 attached to the lower surface of the clamp body 78 may cause the swing of the jumper wire 76, gear ropping, light wind vibration and other causes. By bolt 79,
Since the nut 80 is opened obliquely downward by loosening, and further tilted downward by the weight of the jumper wire 76, the jumper wire 7
6 came off from the clamp 77.

On the other hand, in a configuration in which the holding groove of the holding member is pressed obliquely downward with respect to the upward wire receiving groove of the clamp body (for example, Japanese Utility Model Publication No. 51-8460), the jumper wire is connected to the wire receiving groove and the holding groove. As a result, the jumper wire that could not be pressed properly rubbed against the clamp body, causing wear and wire breakage.

The yoke body 71 is formed by bending a plate material into a mouth shape and joining the butted ends thereof by welding to form a main body portion 73. When the main body portion 73 is formed, an insulator continuous mounting portion 72 is welded to the upper surface thereof. The wire receiving groove 75 is formed by cutting at the corner.
Since the arm 74 formed with the ribs and the rib 84 for reinforcing the base of the arm 74 are welded, there is a problem that the manufacturing cost is increased.

SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and provides a jumper suspension apparatus which reduces the manufacturing cost of a yoke body provided with a clamp and a weight and has an improved function of preventing a clamp from falling off a jumper wire. The purpose is to do.

[0007]

SUMMARY OF THE INVENTION A jumper suspension apparatus according to the present invention comprises a yoke body 8 provided at the lower end of a suspension insulator string 5 and a jumper suspension clamp 9 and a weight 28. In the device, the yoke body 8 having the weight 28
A middle vertical portion of a vertical mounting plate 10 provided with a suspension insulator connecting portion at an upper portion below a suspension insulator connecting portion is sandwiched by intermediate portions 13, 13 of a pair of U-shaped mounting plates 12, 12; 1
The weights 28, 28 in contact with the outer end surfaces of the members 3, 13 and the pair of U-shaped mounting plates 12, 12 are integrally connected to the vertical mounting plate 10 by a plurality of fasteners 15, 16. The clamp 9 fixed to the upper and lower ends of the U-shaped mounting plate 12 at the base 39 of the main body 38 respectively has a groove 44 at the middle on the upper surface of the main body 38 and a line parallel to the groove 44 at the front end. A clamp body 34 having a receiving groove 42 and a projection (43) projecting outward and obliquely upward at the distal end thereof; a projection 48 at the base end on the lower surface of the holding body 45;
In the state where the protrusion 46 is fitted in the groove 44, the lower end edge of the holding groove 47 at the distal end side is formed as described above. One clamp 35, 36 penetrating through the clamp body 34 and each intermediate portion of the retainer 37 with the retainer 37 positioned inside the middle of the inner surface of the projection 43.
And are detachably connected with each other.

According to the above means, the yoke body 8 includes the vertical mounting plate 10 and the pair of U-shaped mounting plates 12, 12, which are attached to the central vertical portion by the intermediate portions 13, 13, with the fasteners 15, 16.
Because of the simple configuration obtained by connecting the above, it can be manufactured at low cost. In addition, the intermediate portions 1 of the pair of U-shaped mounting plates 12, 12 are attached to the vertical mounting plate 10 by using the fasteners 15, 16.
Since the weight 28 is fixed via the members 3 and 13, the hanging length of the jumper suspension device does not change even if the weight is increased or decreased.

In the clamp 9, the press fitting 3 is inserted into the groove 44 of the clamp body 34 fixed to the tip of the U-shaped mounting plate 12.
7, the rotation of the holding member 37 is prevented by the clamp body 34. For this reason,
The clamps 37 can be efficiently tightened by one of the fasteners 35 and 36, and also help to prevent loosening of the fastener due to swing of the jumper wire. When the projection 46 of the holding member 37 is fitted in the groove 44 of the clamp body 34, the holding member 37
Since the lower end edge on the distal end side of the holding groove 47 is located inside the middle of the inner side surface of the projection 43 of the clamp body 34, the lower end edge on the distal end side of the holding fixture 37 and the projection 43 on the clamp body 34 are formed.
The jumper wire does not fall off unless the presser fitting 37 is lifted until the distance between the end of the jumper wire and the end of the jumper wire becomes larger than the diameter of the jumper wire. Therefore, as in a non-hinge type clamp having an opening gap on the side of the jumper wire insertion / removal side (for example, FIG. 4, Japanese Utility Model Publication No. Sho 51-618), a movable-side presser is provided above the distal end edge of the wire receiving groove of the clamp body. The function of preventing the jumper wire from falling off can be significantly improved as compared with the case where the holding groove of the metal fitting has the front end edge.

Reinforcing wire clamp 30 for reinforcing a jumper wire
Are mounted on both sides of the yoke body 8 via weights 28.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS In FIG. 1, a suspension insulator 5 is suspended from a support arm 1 of a tower via a U-bolt 2, a U clevis 3, and a ball clevis 4. The yoke body 8 is connected via the socket clevis 6 and the right-angle clevis 7. This yoke body 8 has clamps 9 for holding jumper wires 76 at the upper and lower portions at the center of both sides, respectively.
Is installed.

The yoke body 8 has a bolt hole 11 for mounting the clevis portion 21 of the right-angle clevis 7 with a bolt and a nut at the upper center, and a power-supply-side anti-shock device 14 on both sides slightly below the bolt hole and the nut. A vertical mounting plate 10 having a plurality of suspension insulator connecting portions formed with a plurality of bolt holes 18 for mounting by means of a bolt, and an intermediate portion 13, 13 attached to a central vertical portion of the vertical mounting plate 10 below the hanging insulator continuous connecting portion. The pair of U-shaped mounting plates 12 and 12 are integrally connected to each other by a plurality of through bolts 15 and a plurality of nuts 16 inserted through the intermediate portions 13 and 13 and the vertical mounting plate 10.

The width of the U-shaped mounting plate 12 of the yoke body 8 is substantially equal to the width of the clamp 9, and the clamp mounting portions 17 above and below the U-shaped mounting plate 12 and protruding substantially horizontally with respect to the vertical mounting plate 10. , 17 with two bolts 19, 1
The clamp 9 is mounted by the nut 9 and the nuts 20, 20.

The yoke body 8 with the weight attached thereto sandwiches the central vertical portion of the vertical mounting plate 10 below the suspension insulator connecting portion between the intermediate portions 13, 13 of the pair of U-shaped mounting plates 12, 12. Weights 28, 2 abutting on the outer end faces of the portions 13, 13
8 and a pair of U-shaped mounting plates 12
5 and a nut 16 are integrally connected to the vertical mounting plate 10. As shown in FIGS. 2 and 3, a reinforcing wire clamp 30 (shown by a virtual line) for holding a reinforcing wire used for reinforcing the jumper wire includes a plurality of bolts drilled on the weights 28, 28 on both sides of the yoke body 8. It is attached to the weight 28 with a bolt 32 and a nut 33 inserted into the hole 31.

The clamp 9 comprises a clamp body 34 attached to the distal end of the clamp attachment section 17 of the yoke body 8 by a base 39 of a body section 38, and a holding member 37 attached to the clamp body 34 by bolts 35 and nuts 36. The clamp body 34 has a step portion 40 formed on the lower surface of the base portion of the body portion 38 to contact the upper surface and the end surface of the distal end portion of the clamp mounting portion 17, and a groove portion 44 having an inverted trapezoidal cross section is formed on the upper surface of the intermediate portion in the line direction. In addition, a wire receiving groove 42 is formed on the upper surface of the distal end portion of the main body 38, and a projection 43 projecting outward and obliquely upward, for example, at a 45 ° angle from the distal end of the wire receiving groove 42 is provided.

The presser fitting 37 has a protrusion 48 projecting from the base end of the lower surface of the presser main body 45, a projecting portion 46 that fits loosely into the groove 44 of the clamp body 34 at the intermediate portion, and a projecting portion from the distal end. A holding groove 47 facing the wire receiving groove 42 of the clamp body 34 is formed. The lower end edge on the distal end side of the holding groove 47 is slightly inside the middle of the inner surface of the projection 43 of the clamp body 34 when the projection 46 is fitted in the groove 44. The holding member 37 and the clamp body 34 are connected to each other by a nut 3.
The bolt 35 connected to the holding member 6 is inserted through a hollow hole formed in an intermediate portion of the main body portion 38 and an intermediate portion of the presser main body portion 45.

Although the insulator string 5 is a single suspended insulator string, it may be replaced by a double suspended insulator string or a V-suspended insulator string.

[0018]

As described above, according to the present invention, a yoke body provided with a clamp and a weight can be manufactured simply and inexpensively, and a jumper of a non-hinge type clamp having an opening gap on the side of the jumper wire. The line drop prevention function can be improved.

[Brief description of the drawings]

FIG. 1 is a front view of the device of the present invention.

FIG. 2 is an enlarged front view of the yoke body with the clamp and the weight shown in FIG.

FIG. 3 is a partially cutaway side view of the yoke body with the clamp and the weight shown in FIG. 2;

FIG. 4 is a front view of a yoke body with a clamp and a weight in a conventional product.

FIG. 5 is a diagram for explaining detachment of a jumper wire attached to a conventional product.

[Explanation of symbols]

 Reference Signs List 5 Suspended insulator series 8 Yoke body 9 Clamp 10 Vertical mounting plate 12 U-shaped mounting plate 13 Intermediate part 28 Weight 30 Reinforcement wire clamp 34 Clamp body 37 Presser fitting 38 Main body 39 Base 42 Wire receiving groove 43 Projection 44 Groove 45 Presser main body Part 46 Projecting part 47 Holding groove 48 Projecting 76 Jumper wire

──────────────────────────────────────────────────続 き Continuation of the front page (72) Inventor Hiroki Sakamoto 13-1 Isojima Minamicho, Hirakata City, Osaka Prefecture Inside Nippon Katan Co., Ltd. (56) References JP-A-50-26085 (JP, A) JP-A-4 −26315 (JP, A) Fully open 1987-108623 (JP, U) Fully open 1987-82,421 (JP, U) Fully open 1986, 2726 (JP, U) Fully open, 62-101333 (JP, U) Japanese Utility Model Publication No. 5-78138 (JP, U) Japanese Patent Publication No. 42-6109 (JP, B1) Japanese Public Utility Model No. 58-54831 (JP, Y2) Japanese Utility Model No. 2-46201 (JP, Y2) Japanese Public Utility Model No. 51- 618 (JP, Y1) Jiko 51-8460 (JP, Y1) Jiko 49-7110 (JP, Y1) Jiko 47-28638 (JP, Y1) Jiko 48-36620 (JP, Y1) (58) Field surveyed (Int. Cl. ⁷ , DB name) H02G ^7/ 00-7/22

Claims (2)

(57) [Claims] A clamp (9) for a jumper wire and a weight are attached to a yoke body (8) suspended from a lower end of a suspension insulator string (5).
In jumper hanging suspension device provided with a (28), the weight
The yoke body (8) provided with (28) has a suspension insulator
Suspension insulator connecting part of vertical mounting plate (10) provided with connecting part
The lower central vertical portion is connected to a pair of U-shaped mounting plates (12, 12).
Between the intermediate portions (13, 13), and both intermediate portions (13, 1).
A weight (28, 28) in contact with the outer end face of 3) and a pair of
And the plurality of fasteners (15, 1).
6) Integrally connected to the vertical mounting plate (10) in
At the upper and lower ends of the U-shaped mounting plate (12).
Clamps fixed at the base (39) of the main body (38) respectively
(9) has a groove (4) in the middle on the upper surface of the main body (38).
4) A wire receiving groove (42) parallel to the groove (44) at the tip.
And a projection (4
A clamp body (34) formed with 3) and a presser body section
A projection (48) at the base end on the lower surface of (45), and
The protrusion (46) fitted into the groove (44), and the line
Forming a holding groove (47) facing the receiving groove (42);
Has a shape in which the protrusion (46) is fitted in the groove (44).
In the state, the lower end edge on the tip side of the holding groove (47) is forward.
So that it is located inside the middle of the inner surface of the projection (43).
The clamp (37) that has been pressed is clamped to the clamp body (34).
One fastener (3) penetrating each intermediate part of the metal fitting (37)
5. The jumper suspension device according to claim 5, wherein the jumper suspension device is detachably connected . 2. A reinforcing wire is provided on a vertical surface of an outer end of the weight (28).
2. The suspension system according to claim 1, further comprising a ramp .