JPS5840740Y2 - Tie-down jumper insulator tension support device - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a tie-down type jumper insulator chain tension support device used for UHV-class large-capacity power transmission lines, and its purpose is to apply a constant load to the jumper insulator chain.

Recently, the development of power transmission lines has also increased to cope with the growth in electricity demand.
The use of HV transmission lines is progressing.

The shape of the tower for this UHV power transmission line is of a large type that is incomparable to the scale of conventional high-voltage power transmission towers.

However, in today's era where environmental pollution is a concern, it has become necessary to reduce the silhouette of steel towers as much as possible in order to improve the appearance of buildings, and so-called environmentally friendly design has become necessary.

In view of the above-mentioned circumstances, the present invention aims to make the jumper more compact by using a tie-down type jumper, which is a high-performance suspension type, and thereby to reduce the size of the steel tower. There is a jumper method, but
In this case, the tension means consisted of a simple spring arrangement, so it was not possible to apply a constant load to the jumper insulator chain.)

That is, the present invention provides an insulator chain tension support device that applies a constant load to the lower jumper insulator chain that supports the jumper wire using a weighted lever, and also limits the range of movement by installing an upper limit stopper. be.

Hereinafter, the present invention will be explained with reference to the drawings showing the implementation thereof.

1 and 2 show an embodiment of a fixed arm tie-down device.

Reference numeral 1 denotes an arm that projects laterally from the steel tower main body 2, and a fixed auxiliary arm portion 1' for extending laterally is formed at the tip of the arm 1.

Reference numeral 3 denotes a jumper wire drawn out from the main wire 5 which is held down by the tension insulator chain 4 whose base end is attached to the arm 1 section, and a connecting member 6 (in the drawings) attached to the center of the jumper wire 3.
In order to make the jumper wire have a multi-conductor configuration in a circular arrangement similar to the main line, the connecting member has a circular frame f), and its upper and lower ends are tied between the auxiliary arm parts 1' and 1' of the upper and lower arms 1°1. Upper jumper insulator series 7 and lower jumper insulator series 1 that go down
The jumper wire 3 is connected to the steel tower body 2 side and extends outward from the steel tower body 2 side.

Reference numeral 8 denotes an insulator tension support device attached to the lower end of the lower jumper insulator chain 7', and the insulator tension support device 8 is shown in FIG.
As shown in FIG. 4, there is a horizontal lever 11 whose base end is pivoted by a pivot pin 10 to a mounting seat 9 provided on the side surface of the auxiliary arm 1', and a horizontal lever 11 that is suspended from the tip of the lever 11. It consists of a disk-shaped weight 12 made of an iron plate or the like which can be handled appropriately, and an integral upper limit stopper 13 disposed on the lever 11 section.

The structure of this upper limit stopper integral 13 is, for example, as shown in FIGS. 4 and 5, the support pin 15 of the intermediate adjustment plate part 14 is guided into the long hole 17 of the clamping plate part 16 on both sides, and the length can be freely expanded and contracted. It consists of an adjustable stopper unit 13', whose upper end is connected to the lower part of the connecting pin 18 to which the upper jumper insulator chain 7 of the lever rod 11 is attached, and whose lower end is connected to the lower edge of the auxiliary arm part 1'. It locks onto the mounting seat 9' provided in the.

That is, this insulator continuous tension support device 8 is set in the arm interior 1a' constituting the auxiliary arm portion 1'.

To attach the weight 12, hold the upper end of the hanger part 20 disposed on the support shaft 19 penetrating through the center with the shaft pin 21, and attach it to the lever lever 11.
Becomes attached to.

In addition, this lever 11 has a fulcrum a that becomes the shaft pin 10 at the base end.
It is located between the center point and the center point which becomes the shaft pin 21 at the tip.

The point C, which becomes the connecting pin 1B, is on a straight line and constitutes a kind of secondary lever.

To explain the action of the shield, first, the horizontally extending jumper wire 3, which is in a stationary state, is suspended from the upper auxiliary arm 1' section and the lower jumper insulator chain 1. The lever rods 11 connected to the lower ends of the upper and lower jumper insulator chains 7, 7' are placed at a position with a predetermined clearance at T', and are moved downward by the force point of a weight 120 attached to the tip of the lever rods 11. It is stretched and exhibits a horizontal state.

In this case, the length adjustable stopper unit 13' which becomes the upper limit stopper unit 13 is the support pin 1 of the intermediate adjustment plate part 14.
5 is at the lowest position in the elongated hole 17 of the clamping plate part 16 and is in a shortened state (see Fig. 5).1st, a lateral load such as wind force is applied to the jumper wire 3 and moves it to the leeward side. When the flow occurs, the upper and lower jumper insulators 7 support the upper and lower sides accordingly.
．． γ also bends, giving a lifting force to the lever rod 11 connected to the lower jumper insulator chain T', and causing the lever rod 11 to bend.
is lifted against the force point load of the weight 12 (
Of course, if the force point load of the weight 12 is less than the lifting force, it is immobile).

As a result, due to the deflection of the lateral load on the upper and lower jumper insulator chains 7, 7', the lever 11 tilts upward from the horizontal position about the fulcrum.

However, in this case, the weight 12 suspended from the tip of the lever 11
follows, so a constant load is constantly applied to the upper and lower jumper insulator chains 1, 7' connected to the lever 11, but no more harmful stress than necessary is generated.

Further, as the lever 11 is tilted upward, the length-adjustable stopper 13' is extended by the guide of the elongated hole 17.

Here, when the horizontal deflection of the jumper wire 3 reaches its maximum and reaches the limit of clearance with the steel tower, the support pin 15 of the length adjustable stopper integral 13' connected to the lever rod 11 is inserted into the elongated hole 1.
The length adjustable stopper 13' is in contact with the uppermost edge of the T.
A kind of stopper mechanism works to prevent the lever from becoming any longer, thereby regulating the upward inclination of the lever 11.

That is, the length t of the elongated hole 17 of the integrated length-adjustable stopper 13' becomes the movable range of the jumper wire 3.

Further, the structure of this upper limit stopper integral 13 is as shown in FIG. 6A in addition to the length adjustable stopper integral 13'.

The same effect can be obtained by making the upper edge 11a of the lever 11 come into contact with the stopper roller 23 which is placed at the top of the support 22 placed at the base of the lever 11 at a certain angle as shown in FIG. get.

Further, as shown in FIG. 7, a fixed locking piece 24 protruding from the side surface of the auxiliary arm 1' is disposed above the upper edge 11a of the lever lever 11 with a certain gap in between. They may also come into contact with each other on an upward slope.

Further, as shown in FIG. 8, both ends of two adjustment links 25° 25' connected at the middle are connected to the side surface of the auxiliary arm 1' and the lever 11, so that when the lever 11 is at its maximum inclination, the 2
The adjustment links 25 and 25' may be straight to act as a stopper.

FIG. 9 shows another embodiment of the movable arm type tie-down device.

This connects the jumper wires 3 of each phase to the top, the bottom arm 1,
1, and is supported by lower jumper insulators 7, 7'.

In this case, the auxiliary arm 1 placed at the tip of the intermediate punching arm 1
The ′ part is a movable arm whose base end is pivoted.

In the so-called movable arm type tie-down device in which each jumper insulator series T and 1' are successively connected in this way, the insulator series tension support device 8 is installed interposed between the lowest jumper insulator series T' and the lowest arm 1. do.

At this time, the action of the insulator tension support device 80 is to restrict the movable range in which the jumper wire 3 and the jumper insulator chains 7, 7' flow due to wind pressure, etc., as described above, and to
, 7' by applying a constant load.

As mentioned above, the present invention is a tie-down type jumper that supports horizontally extending jumper wires, and a lever rod equipped with a weight that serves as a force point load is placed at the lower end of the lower jumper insulator chain to provide a constant load. As a result, there is no undue stress on the upper and lower jumper insulators and jumper wires, and since the upper limit stopper is integrated into the lever, the range of movement is reliably regulated and the specified clearance is maintained at all times. It will maintain the

In other words, the horizontally extending jumper wire becomes a high-performance jumper that controls lateral swing with a constant load that is a safe load, and has a compact structure, which leads to the downsizing of the tower and makes it a suitable type for UHV line power transmission lines. .

In addition, since the insulator tension support device of the present invention is a combination of a lever and a weight, it is small and can be stored inside the arm of the auxiliary arm for horizontal extension as shown in the embodiment, and can be used as a weight, etc. From this point of view, the change in the constant load applied to the upper and lower jumper insulators can be minimized.
・It has practical effects such as being able to bind and therefore being suitable for power transmission lines that pass through areas with heavy snowfall.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention: Fig. 1 is a front view in use, Fig. 2 is a side view of the same, Fig. 3 is an enlarged front view of the auxiliary arm, and Fig. 4 is an insulator continuous tension support. Old view of the equipment section,
FIG. 5 is a front view showing the main parts of the same length adjustable stopper, FIG. FIG. 9 is a front view of the same upper limit stopper integrated therein, and FIG. 9 is a front view of another embodiment in a state of use. 1... Arm, 1'... Auxiliary arm, 3... Jumper wire, 6... Connecting member, 7, 7'... Upper and lower jumper insulator series, 8... Insulator series tension support Device, 11...
・Lever rod, 12... Weight, 13... Upper limit stopper.

Claims (1)

[Scope of utility model registration request] The center part of the horizontally extending jumper wire is connected to a tie-down type jumper device that is supported by upper and lower jumper insulators, and the lower end of this lower jumper insulator is connected to the base that is placed inside the arm of the lower auxiliary arm. The end is supported at the middle part of a horizontal lever rod to which the fulcrum is pivoted, a weight is attached to the tip of the lever, and the base end is fixed to the ubiquitous location of the lever, and the tip is integrated with an upper limit stopper. An insulator tension support device for a tie-down type jumper that restricts the rise of the facing lever.