JP3476597B2 - Yoke bracket - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a conductor retaining yoke fitting for retaining conductors of a multi-conductor transmission line at predetermined intervals. The present invention relates to a yoke fitting, and more particularly, to a yoke fitting for preventing a wire for tightening of a semi-ferrous wheel for tightening from contacting a vertical yoke fitting or the like when tightening a conductor. [0002] FIG. 2 is a perspective view showing a schematic configuration of the conductor portion of the anchor four conductors i ~ D but insulator device. [0003] Each of the conductors Y to D is positioned at the vertex of the square so that the conductor yoke fitting Y
A predetermined interval is maintained by the first and second yoke fittings Y3 and the vertical yoke fitting Y3. That is, the conductors A and B are clamped on both sides of the long side of the triangular conductor retaining yoke fitting Y1.
2, via a vernier bracket B1, B2, etc., and the conductor c,
D is attached to both sides of the long side of the triangular conductor retaining yoke fitting Y2 via clamps C3 and C4, vernier fittings B3 and B4, and the like. The apexes of the triangles of both conductor retaining yoke fittings Y1 and Y2 are conductors.
(A), (b) and conductors ( c) and (d) at predetermined intervals,
It is connected to the vertical yoke fitting Y3 so as to be kept at the same intervals as the a , b and conductors c and d . Although the conductors A to D are located at the vertices of the square array as described above, the spacing between the conductors is usually about 400 mm for a transmission voltage of 500 kv class. The vertical yoke fitting Y3 is connected to a triangular yoke fitting Y0. That is, the long side of the yoke fitting Y0 is connected to two insulator rows A1 and A2 each having one end attached to a steel tower (not shown), and a vertical yoke fitting Y3 is attached to the triangular vertex.
Are connected. [0005] In Fig. 2, reference numerals 1 and 2 denote semi-ferrous wheel mounting holes provided in the yoke fitting Y0, which are provided on opposite sides of the mounting positions of the insulator trains A1 and A2. Of these semi-metallic wheel mounting holes 1 and 2, the semi-metallic wheel mounting hole 1 is a conductor A ,
It is used for mounting a semi-wheel (not shown) for tightening the conductor C. On the other hand, the hole 2 for attaching the semi-wheel is used for tightening the conductor B and D. Utilized for mounting. However, in the above-described conventional yoke fitting Y0, only one semi-wheel mounting hole is provided at each of the right and left positions for each conductor. to attach the semi-gold car on Article 2 of the conductor Lee,
After finishing the tightening of (b) , when trying to tighten the lower two conductors ( c) and (d) , depending on the direction of the tightening, a semi-metal wheel or a wire for pulling the semi-metal wheel, etc. May contact the vertical yoke fittings or the connecting fittings for connecting the vertical yoke fittings to the conductor retaining yoke fittings, and may be mutually damaged. Accordingly, the present invention has been made to solve the above-mentioned problems, and an object of the present invention is to provide a possibility that a tightening tool such as a semi-ferrous wheel may come into contact with a conductor retaining yoke fitting. There is no yoke fitting in providing. [0008] In order to achieve the above object, a yoke fitting according to the present invention is for holding conductors of a multi-conductor transmission line at a predetermined distance from each other. A yoke fitting for connecting a conductor retaining yoke via another yoke fitting, a yoke fitting attached to a steel tower via an insulator string, and a semi-wheel-mounting hole for tightening each of the conductors provided on the yoke fitting. Is the other yoke fitting
It is characterized in that a plurality is provided on each of both sides of the mounting position at a distance along a direction perpendicular to the direction in which the power transmission line is stretched and at which a strength at the time of tightening can be secured. In the above construction, the semi-wheel is selected from a plurality of semi-wheel-attaching holes so that the tightening wire or the like does not contact the vertical yoke fitting or the like. Embodiments of the present invention will be described below with reference to the drawings. The same components as those in FIG. 2 will be described using the same reference numerals. FIG. 1 is a plan view showing a schematic configuration of a conductor-side portion of the insulator device. FIG. 1 roughly corresponds to a state in which FIG. 2 is viewed from above, and shows a state in the middle of a tightening operation. The yoke fitting Y0 is formed of a metal plate having a substantially triangular shape, and has a pair of ends (right sides in FIG. 1) attached to a steel tower (not shown) on both sides of a long side of the triangle. It is connected to the insulator series A1 and A2. As shown in FIG. 2, another yoke of the present invention is provided at a portion corresponding to the vertex of the triangle of the yoke fitting Y0.
A pair of the same triangular conductor yoke fittings Y1 and Y2 are connected via a vertical yoke fitting Y3 corresponding to a fitting. In FIG. 1, in order to simplify the drawing,
The clamps and vernier fittings shown in FIG. 2 are omitted. Also, the conductor retaining yoke metal fitting Y located above
FIG. 1 shows a state in which the conductors A and B are already retained. The apexes of the triangles of the conductor retaining yoke fittings Y1 and Y2 are connected to the vertical yoke fitting Y3 via connecting fittings Y1 'and Y2', and correspond to both sides of the long side of the triangle. Conductor a, a2 and conductor b for attaching conductors a and b and conductors d and c
1 and b2 are provided. As shown in FIG. 2, the distance between the conductor retaining yoke fittings Y1 and Y2 is equal to the distance between the conductors A and C and the conductors B and D with respect to the vertical yoke fitting Y3. Yoke metal fitting Y for both conductors
1, Y2 when each conductor i-d is attached, each conductor Lee
~ D will be located at each vertex of the square. [0016] Now, on both side portions of the long sides of the triangle of the yoke member Y0, in a direction perpendicular to the stretched direction of the transmission line, i.e. in Figure 1, already緊線conductors Lee, and stretched direction of B A plurality (four in the illustrated example) of semi-wheeled wheel mounting holes 1a to 1d, 2a to 2d at appropriate intervals in the orthogonal direction.
Are provided respectively. Here, the appropriate interval is
This means that the cross-sectional area between the holes of the semi-ferrous wheel mounting holes 1a to 1d is set so as to secure sufficient strength against the load applied during tightening, and the interval is variable depending on the thickness of the yoke fitting. I do. These semi-metal wheel mounting holes 1a to 1d,
Of the 2a to 2d, the semi-metal wheel attachment holes 1d and 2d substantially correspond to the conventional semi-metal wheel attachment holes 1 and 2 shown in FIG. Then, the other semi-wheel drive mounting holes 1a to 1
c, 2a to 2c are respectively provided in such a manner as to maintain a symmetrical positional relationship in an outward direction of the respective semi-wheel drive mounting holes 1d, 1d. Next, the semi-wheeled wheel K is attached to the yoke fitting Y0.
An example in which the conductors C and D are attached to the conductor retaining yoke fitting Y2 by attaching 1, K2, K3, and K4 will be described. First, the semi-wheels K1 and K3 are respectively mounted in the semi-ferrous wheel mounting holes 1a and 2a of the yoke fitting Y0. Each of the semi-gold wheels K1 and K3 is connected with a wire W1 and W2 for a tension line.
Semi-wheels K2 and K4 connected to conductors C and D through the wire
And each is configured as a pair. The semi-wheeled wheels K2 and K4 are connected to the conductors via cam-alongs D1 and D2.
They are connected to c and d , respectively. The engagement position of the conductors C and D with the steel tower arm (not shown) on the wire-drawing wheel is usually X in FIG.
In the direction, conductor in semi-gold wheels K1, K2, K3, K4
In the course of tightening each of c and d , the tightening wire W
The angles 1, W2 have the angles indicated by θ in FIG. The angle θ is not uniform depending on the position where the extended conductors C and D are taken in for tightness, but increases when the tower has a horizontal angle. Have a relationship. The tension wires W1 and W2 are pulled by a winch (not shown) so that the semi-gold wheels K2 and K4 are
1, K3, and finally, the conductor C is in the conductor retention hole b1 of the conductor retention yoke fitting Y2, and the conductor D is the conductor retention hole of the conductor retention yoke fitting Y2. Attachment to b2 completes the tightening work. The conductors C and D after the completion of the tightening work are in the same direction as the extending directions of the conductors A and B attached to the upper conductor retaining yoke fitting Y1. That is, the angle θ in FIG. Incidentally, the semi-ferrous wheel K1 is connected to the yoke fitting Y0.
Is attached to the semi-ferrous wheel mounting hole 1d located on the innermost side of the wire, the tightening wire W1 or the semi-ferrous wheel K2 is moved by the angle θ to the vertical yoke fitting Y3 and the connecting fittings Y1 ', Y.
However, if the semi-wheel K1 is attached to the semi-wheel attachment hole 1a located outside the semi-wheel attachment hole 1d as in the present embodiment, the tightening wire W
There is no danger that 1 etc. will contact the vertical yoke fitting Y3 etc. Which of the semi-metal wheel attachment holes 1a to 1d is to be fitted with the semi-metal wheel K1 is determined by the angle θ in FIG. As the size increases, the semi-wheel-mounted hole located on the outer side is selected. The tension wire W2 on the conductor D side and the semi-metal wheel K
4, since there is no possibility of contact with the vertical yoke member Y3, etc., can be attached to semi-metal wheel K3 for either semi-metal wheel mounting holes 2 a to 2 d, the conductor C, when緊線of two The semi-metal wheel K3 is mounted by selecting a semi-metal wheel mounting hole 2a symmetrical to the semi-metal wheel mounting hole 1a in which the semi-metal wheel K1 on the conductor C side is mounted in order to balance the force of the semi-metal wheel K1. Can be The description of the attachment of the conductor retaining yoke fitting Y1 of the conductors A and B is omitted, but prior to the attachment of the lower conductors C and D , the semi-metal wheels K1 and K are attached.
2. Mounting is performed in the same procedure as the above-described conductors C and D using K3 and K4. Further, in the above-described embodiment, an example in which four conductors are used as the multiple conductors has been described, but it is a matter of course that the number of multiple conductors may be larger. In the yoke fitting according to the present invention, the semi-wheel-wheel mounting holes for tightening the conductors provided on the yoke fitting are provided on both sides around the mounting position of another yoke fitting.
Each along the direction perpendicular to the direction of transmission line stretching,
Since a plurality of semi-wheels are installed at intervals so that the strength at the time of tightening can be secured, the mounting position of the semi-wheel can be selected appropriately, and the semi-wheel and the wire for tightening contact the vertical yoke fittings etc. Can be eliminated. Therefore, it is possible to prevent damage to the tightening wire , the vertical yoke fitting, and the like .

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a plan view showing a state in the middle of a tightening operation using a yoke fitting according to one embodiment of the present invention. FIG. 2 is a perspective view showing an example of use of a conventional four-conductor yoke fitting. [Description of Signs] Y0 Yoke fittings Y1, Y2 Yoke fitting Y3 for conductor retention Vertical yoke fittings 1a to 1d, 2a to 2d Holes a1, a2, b1, b2 for semi-metal wheel attachment Holes A1, A2 for conductor retention, insulator K1 ~K4 semi gold wheel W1, W2緊線wires b ~ two conductors

Claims (1)

(57) [Claims 1] A conductor retaining yoke metal fitting for holding each conductor of a multi-conductor power transmission line at a predetermined interval from each other via another yoke metal fitting. Through the insulator ream
In the yoke fitting to be attached to the steel tower, the semi-wheeled wheel mounting hole for tightening the conductors provided on the yoke fitting is used to set the mounting position of the another yoke fitting.
A yoke fitting comprising a plurality of yoke fittings provided on both sides of the center along a direction perpendicular to the direction in which the transmission lines are stretched, with an interval capable of securing strength at the time of tightening.