JPH0736654B2 - Wire protector and method for protecting wires against strong winds - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention relates to a work for extending a transmission line, and in particular, it is possible to prevent the electric wire from being damaged by a strong wind when the work is interrupted during the extension of the work for some reason. The present invention relates to a wire protector for preventing the wire and a wire protection method for measures against strong winds.

[Conventional technology]

Damage to an electric wire due to a strong wind is a result of the electric wire being shaken by the strong wind and repeating "relative movement" with respect to the gold car, and to prevent this, the relative movement between the electric wire and the gold car is to prevent this. Should be restrained. Examples of such conventional techniques include, for example, Japanese Utility Model Laid-Open Nos. 56-32912, 56-147708, 59-66314, and Japanese Patent Laid-Open No. 60-141.
No. 108 and Japanese Patent Application Laid-Open No. 1-286709.

Among them, those of Japanese Utility Model Laid-Open Nos. 56-32912, 56-147708, and 59-66314 are designed to fix electric wires directly to the wheel of a gold wheel. In the No. 60-141108, the electric wire is indirectly fixed to the wheel of the gold wheel via a "fixing member". In Japanese Patent Laid-Open No. 1-286709, the electric wire is fixed to a portion other than the gold wheel.

[Problems to be Solved by the Invention] However, if the electric wire is directly fixed to the wheel of the gold wheel, it is not always possible to obtain a sufficient protective effect against an extremely strong wind such as a typhoon. In other words, if the wire is fixed enough to completely suppress the relative movement of the wire in the front-rear direction with respect to the wagon, the fixing length must be long if the fixing pressure is such that the wire is not adversely affected. However, due to the relationship with the catenary angle of the electric wire in the gold wheel portion, for example, as shown in FIG. 10, the wire W will be forcibly bent at the boundary with the fixed portion F, and the electric wire W will be bent in this state. If you are tortured violently by the wind, you will end up with damage to the boundary with this fixed part.

On the other hand, JP-A-60-141108 in which a "fixing member" is interposed
Issue does not have this problem. However, this technique also has major drawbacks. In other words, it is difficult to flexibly adapt to the catenary angle of the electric wire because the relationship between the fixed part of the "fixing member" to the gold wheel wheel and the electric wire fixed part is fixed.

Also, the one disclosed in Japanese Patent Laid-Open No. 1-286709, in which the electric wire is fixed to a portion other than the gold wheel, does not have the above-mentioned problem. There is room for improvement because no consideration has been given to collision with each other.

Therefore, the present invention provides a wire protection device and a wire protection method for strong winds that can flexibly adapt to the catenary angle of the wire and that does not damage the wire even in the case of extremely strong wind such as a typhoon. The purpose is.

[Means for Solving the Problems]

A specific example is to prevent the electric wire from being damaged at the supporting part by the gold wheel by repeatedly causing relative movement between the gold wheel and the electric wire due to wind shaking the gold wheel during construction interruption. As a wire protector for fixing the gold wheel and the electric wire, it has a gripping part for gripping the wire and a fixing part for fixing the wire to the wheel of the gold wheel, and the fixing part is fixed to the wheel of the gold wheel. In this state, there is provided an electric wire protector (claim 1 invention) in which the gripping portion and the fixing portion are rotatably connected so as to have an angular relationship according to the catenary angle of the electric wire. As a wire protection method for strong wind measures to prevent damage to the electric wire at the supporting part by the gold wheel by fixing the gold wheel and the electric wire using wire protection tools in pairs on the front and back of the gold wheel, Parts on the front and rear sides of the gold wheel are attached to the grip of each wire protector. Together to grip the wire, respectively,
Provided is a wire protection method for strong winds (claim 2 invention) in which the fixing portions of the respective wire protection devices are fixed to the front and rear sides of the wheel of the gold car, respectively. , In the area where the rolling wobble is likely to occur in the wagon, is it necessary to extend a mooring tool from the fixed part of each wire protective tool fixed to the wheel and moor this mooring tool to an appropriate part below the wire? Or, in the area where lateral vibration due to wind is unlikely to occur in the gold wheel, the fixed part of each wire protector fixed to the wheel is connected to the outer periphery of the wheel of the gold wheel with a tight fitting measure. A wire protection method for electric wires (claims 3 and 4) is provided, and further, relative movement between the gold car and the electric wire is repeatedly caused by the gold wheel swaying due to the wind during construction interruption, etc. The wires are damaged at the car support site. In order to prevent the electric wire from being damaged, a pair of wire protectors consisting of a gripping tool and a mooring tool is used on both front and rear sides of the gold wheel. This is a wire protection method for strong wind measures that prevents the relative movement of the above-mentioned wagon and the wire by mooring the metal fittings to an appropriate part above the wire with a mooring tool. Provided is a method for protecting a wire against strong winds (claim 5 invention) by connecting metal fittings to each other.

[Action]

An electric wire protector including a grip portion and a fixing portion is used so that the electric wire is fixed to the gold wheel by gripping the grip portion and fixing the fixing portion to the gold wheel. Therefore, without causing excessive bending that may cause damage to the electric wire as in the conventional technique of fixing the electric wire directly to the gold wheel, and without applying a large force that may adversely affect the electric wire. In addition, it is possible to easily give a fixing force sufficient to withstand a strong wind such as a typhoon. Moreover, since the fixing portion is rotatable with respect to the gripping portion and the angle between the fixing portion and the gripping portion can be freely changed, it can be easily applied to a portion having a different catenary angle (Claim 1). And 2 invention).

The wire protector used in this way is moored to an appropriate part below the wire by a mooring tool via the tip of the fixing part, so that the adjacent wires and the wagons collide with each other due to lateral vibration. In addition to being prevented, the wire protector is more reliably fixed to the gold wheel, and it can withstand even a very strong wind such as a typhoon (Claim 3 invention).

In addition, since there is little problem of lateral runout due to the tension of the wire itself in the area with a horizontal angle where the gold wheel is swung outward, the fixing parts of the wire protective equipment should be in close contact with the outer circumference of the wheel of the gold wheel. By connecting with the connecting tool, the wire protector is more securely fixed to the gold wheel (Claim 4 invention).

Further, in the case of using an electric wire protector including a holding metal fitting and a mooring tool, lateral grip is prevented by connecting the respective holding metal fittings of adjacent electric wires to each other (claim 5 invention).

〔Example〕

Embodiments of the present invention will be described below with reference to the drawings. still,
In the following description, the parts common or similar to the respective embodiments will be designated by the same reference numerals, and the overlapping description will be appropriately omitted.

First Embodiment (FIGS. 1 and 2) In this embodiment, an electric wire protector 1 as shown in FIGS. 1 and 2 is used as shown in FIG.

The wire protector 1 is composed of a grip portion 2 and a fixing portion 3. The grip portion 2 and the fixing portion 3 are connected via a hinge pin 4 so that an angle α formed between them can be freely changed. ing.

The grip portion 2 is composed of a clamp receiver 5 and a plurality of clamp levers 6 arranged in an alternating direction, and the clamp lever 5 is connected to the clamp receiver 5 by a bolt / nut member 7 connected to the clamp receiver 5. It can be tightened against. The clamp lever 6 is provided on the base end side of the clamp receiver 5.
The reason why the play part A without a fixed length is provided is
This is to prevent the electric wire W from being forced on the base end side when the electric wire W is shaken by the wind and the angle α is widened accordingly.

The fixing portion 3 is formed by fixing the fixing portion main body 3m to the clevis portion 3c connected to the connecting portion 5r formed on the clamp receiver 5 of the gripping portion 2 via the hinge pin 4.
A connection hole 9 for connecting a mooring tool 8 which will be described later is provided at the tip of 3 m.

As shown in FIG. 1, the wire protectors 1 are used as a pair on the front and rear sides of the gold wheel. The wire W is gripped by the gripping portion 2 of each wire protector 1, while each wire protector is held. Attach the fixing part 3 of the tool 1 to the wheel H of the gold wheel with rope or wire R.
It is used by bundling and fixing. Further, the tip of the fixed portion 3 is moored by a mooring tool 8 to an appropriate portion below the electric wire W, for example, an arm of a steel tower by applying an appropriate tension.

The fixing of the electric wire W by the electric wire protector 1 prevents movement of the electric wire W in the arrow X direction with respect to the wheel H of the gold wheel, that is, the front-rear direction, that is, the electric wire W moves forward and backward with respect to the wheel H of the gold wheel. This is to prevent a phenomenon in which the electric wire W is damaged due to repeated bending stress caused by the movement in the direction. And, the great advantage of this method is that it does not cause excessive bending that causes damage to the wire as in the above-mentioned conventional technique of fixing the wire directly to the gold wheel, and yet it may adversely affect the wire. That is, it is possible to easily provide a fixing force sufficient to withstand a strong wind such as a typhoon without applying a large force, and the angle α between the fixing portion 3 and the grip portion 2 can be freely set. Since it can be changed, it can be easily applied to a portion where the catenary angle of the electric wire W is different.

In addition, mooring the wire protector 1 with the mooring tool 8 serves to prevent collision between the adjacent electric wires W and rail cars due to lateral vibration, and further secures the wire protector 1 to the rail car. It will be reliable and will be able to withstand a very strong wind such as a typhoon.

Second Embodiment (FIG. 3) In this embodiment, the fixing portions 3 of the wire protectors 1 are connected to each other by a band-like connecting tool 20 which is brought into close contact with the outer periphery of the wheel H of the gold wheel. I am trying. This is particularly convenient when used on a portion having a horizontal angle such that the gold wheel is swung outward. That is, in the case of such a portion, since the problem of lateral vibration due to the tension of the electric wire W itself is small, it is possible to more securely fix the electric wire protector 1 to the gold wheel by the simpler method as described above. It is enough. However, if you do not expect that strong wind,
It is also possible to connect the parts other than the part having the horizontal angle by such a connecting tool 20.

Third Embodiment (FIGS. 4 and 5) This embodiment is a modification of the wire protector 1 described above. That is, the wire protector 21 is the grip portion 2 of the wire protector 1.
Further, a gripping portion 22 and a fixing portion which are obtained by further improving the fixing portion 3.
Formed from 23.

Specifically, the grip portion 22 is provided with a play portion B without the clamp lever 6 at a fixed length on the tip end side of the clamp receiver 25, and the tip end portion has a gentle curve shape. By providing the play portion B as described above, when the electric wire W is shaken by the wind and the angle α is widened as described above, the play portion B comes into contact with the electric wire W in its gently curved shape, and thus the electric wire W Will have less negative impact on.

The fixed portion 23 is formed by joining a pair of member pieces 23p, each of which has a substantially triangular shape as a whole and one side of which has an arc shape in close contact with the outer periphery of the wheel H. This structure is used to obtain higher strength and to improve the conformability of the fixing portion 23 to the wheel H so that the damage to the wheel H can be reduced.
Attached to the fixing portion 23 is a connection lever 24 for connecting the mooring tool 8 and the connecting tool 20 described above.

Fourth Embodiment (FIGS. 6 to 9) This embodiment is slightly different from each of the above-mentioned embodiments, and the gripping metal fittings are different.
An example of a method of using a pair of wire protectors 32 composed of 30 and a mooring tool 31 on both front and rear sides of the gold wheel K, particularly an example of a method suitable for being applied to a suspended portion and a portion having a small vertical load. is there. Specifically, as shown in FIG. 7, the electric wire W is held by the holding metal fitting 30 at a position slightly apart from the gold wheel K, and the holding portions of the adjacent electric wires W are connected to each other. The electric wire W is directly fixed to itself. If necessary, the wheel H of the gold wheel K
You may make it perform the process for stopping the rotation of.

The electric wire W is grasped by the grasping metal fitting 30 which is covered with a protective member 33 for protecting the electric wire W, and the grasping metal fitting 30 is rotatably grasped as shown by an arrow A. A mooring tool 31, which is composed of a rotating member 34 connected to the metal fitting 30 and a wire connected to the rotating member 34 and which can be tensioned and relaxed freely.
Is extended and is moored by the mooring tool 31 to the mooring plate 35 provided at the base end of the vertical frame Kv of the gold wheel K. However, the mooring destination of the mooring tool 31 may be the arm Tm of the steel tower T.

Such a method of fixing the electric wire W has the following advantages. That is, in order to obtain a gripping force (fixing force) sufficient to suppress the movement of the electric wire W even in an extremely strong wind such as a typhoon, a gripping length corresponding thereto is given, that is, the gripping metal fitting 30
The gripping pressure does not necessarily need to be increased so much, and even if the gripping length becomes long, it does not have any adverse effect on the electric wire W. In addition, the gripping metal fitting 30 allows the tensioning and loosening mooring. Since the tool 31 is moored so to speak, when the electric wire W is hit by wind, the gripping portion of the gripping metal piece 30 moves without countering the movement of the electric wire W, and the cause of damage to the electric wire W at the boundary with the gripping portion. The point is that it does not cause overload.

The mutual connection of the gripping parts of the adjacent electric wires W is performed by the adjacent gripping metal fittings.
30 and 30 are connected to each other by a connecting rod 36, and brace ropes 37 and 37 are used to connect and hold the gripping metal fittings 30 and 30 facing each other.

The connection between the grip fittings 30, 30 by the connecting rod 36 is as follows.
Swing in the Z direction indicated by the arrow, that is, adjacent electric wires W due to lateral shake,
This is to prevent damage caused by the contact between the Ws, and the connection between the gripping metal fittings 30, 30 facing the streak by the bracing rope 37 should be such that the adjacent electric wires W, W move in opposite directions in the front-rear direction. This is to prevent the connection rod 36 from being damaged due to bending or shearing of the connecting rod 36.

The electric wire W is fixed to the gold wheel K itself in order to prevent the electric wire W from being damaged by colliding with the vertical frame Kv or the like of the gold wheel K by the movement of the electric wire W in the arrow Y direction, that is, the vertical direction. The metal fittings 38 are used. As the fixing metal fitting 38, for example, one as shown in FIG. 9 can be used, but the essential point is that it can suppress the vertical movement of the electric wire W.

Incidentally, in the suspended portion where the vertical load is large, the movement of the electric wire W in the vertical direction hardly occurs, so that the fixing by the fixing metal fitting 38 can be omitted. For the tension-resistant portion where the vertical load is small, the suspension cord C of the gold wheel K is about 1 m, which is much shorter than the suspension cord C of the gold wheel K at the suspension portion, which is about the length of the insulator string. The lateral deflection of the electric wires W is small, and there is no need to worry about contact between the adjacent electric wires W. Therefore, in the case of the tensile strength portion, mutual connection of the gripping portions of the adjacent electric wires W can be omitted. Further, in the case of a tension-resistant portion having a large vertical load, the fixing by the fixing metal fitting 38 can be omitted for the same reason as in the case of the suspension portion described above.

〔The invention's effect〕

The wire protector and the wire protection method for strong wind measures according to the present invention are as described above, and have the following effects.

(A). To easily provide sufficient fixing force to withstand strong winds such as typhoons, without creating an unreasonable condition that may cause damage to the wires and without applying a large force that may adversely affect the wires. It is possible to realize a more reliable countermeasure against strong winds on electric wires.

(B). Since the angle between the fixed portion and the grip portion can be freely changed, it can be easily applied to a site having different catenary angles.

(C). By mooring the wire protector at an appropriate portion below the wire with a mooring tool, it is possible to prevent the adjacent wires and the gold wheels from colliding with each other due to lateral vibration, and also to prevent the wire protector from being used by the gold wheel. Will be fixed more securely,
The protection against extremely strong winds such as typhoons can be made more reliable.

(D). For a part with a horizontal angle such that the gold wheel swings outward, by connecting the fixing parts of the wire protector to the outer periphery of the wheel of the gold wheel with a connecting tool in a close contact state,
The electric wire protector can be fixed to the gold wheel more easily by a simple means.

(E). When using a wire protector consisting of a grip and a mooring tool, by connecting the grips of adjacent wires to each other, sideways movement is prevented and protection against extremely strong winds such as typhoons is more effective. It can be assured.

[Brief description of drawings]

FIG. 1 is a schematic side view showing a usage state of the wire protector according to the first embodiment, FIG. 2 is a schematic side view of the wire protector seen from the direction of arrow II in FIG. 1, and FIG. FIG. 4 is a schematic side view showing a use state of the wire protector according to the second embodiment, FIG. 4 is a schematic side view showing a use state of the wire protector according to the third embodiment, and FIG. 5 is shown in FIG. 2 is a schematic side view of the wire protector equivalent to FIG. 2, FIG. 6 is a schematic side view showing the state of the gold wheel at the suspended portion, and FIG. 7 is a suspension with a large vertical load applied with a wire protection method against strong winds. Fig. 8 is a schematic side view showing the front and rear of the gold wheel in a portion, Fig. 8 is a schematic plan view showing a simplified state as viewed from the direction of arrow VIII in Fig. 7, and Fig. 9 is a schematic side view of a fixing bracket. And, FIG. 10 is a schematic side view showing the vicinity of the gold wheel subjected to the conventional method. 1, 21, 32 ...... Wire protection device, 2, 22 ...... Grip part, 3, 23
...... Fixing part, 8 ...... Mooring tool, 20 ...... Coupling, 30 ...... Grip metal fitting, 31 ...... Mooring tool, K ...... Flat wheel, W ...... electric wire.

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Toshio Kaido 3-27-12 Horikiri Katsushika-ku, Tokyo Inside Yasuda Manufacturing Co., Ltd. (56) Reference JP-A-1-286709 (JP, A)

Claims (5)

[Claims] 1. To prevent the electric wire from being damaged at a supporting portion by the gold wheel by repeatedly causing relative movement between the gold wheel and the electric wire due to wind swaying the gold wheel during construction interruption. An electric wire protector for fixing an electric wire to a gold wheel, comprising a gripping part for gripping the electric wire and a fixing part for fixing the wheel to the gold wheel, and fixing the fixing part to the wheel of the gold wheel. A wire protector characterized in that the gripping part and the fixing part are rotatably connected in such a state that an angle relationship corresponding to the catenary angle of the wire can be obtained. 2. A wire protection method for strong winds, wherein the wire protector according to claim 1 is used to fix an electric wire to an electric wire to prevent the electric wire from being damaged at a supporting portion by the gold wheel.
Use wire protectors in pairs on the front and rear sides of the gold car,
For the strong wind measures, the electric wire protective equipment grips the electric wires at the front and rear sides of the gold wheel, and the fixed parts of the electric wire protective equipment are fixed at the front and rear sides of the gold wheel. Electric wire protection method. 3. A mooring tool is extended from a fixing portion of each wire protector fixed to a wheel at a portion where a horizontal shake due to wind is likely to occur in the gold wheel, and the mooring tool is moored to an appropriate portion below the electric wire. The electric wire protection method for strong wind measures according to claim 2. 4. In a portion where lateral vibration due to wind is unlikely to occur in the gold wheel, the fixing portions of the wire protectors fixed to the wheel are connected to the outer periphery of the wheel of the gold wheel by a connecting member in a close contact state. The electric wire protection method for strong wind measures according to claim 2. 5. To prevent the electric wire from being damaged at a supporting portion by the gold wheel by repeatedly causing relative movement between the gold wheel and the electric wire due to wind swaying the gold wheel during construction interruption. In addition, a pair of wire protectors consisting of a gripping tool and a mooring tool is used on both the front and rear sides of the gold wheel, and the gripping tool grips the wire at a position slightly apart from the gold wheel, and the gripping tool is used by the mooring tool. In the wire protection method for measures against strong winds, which is designed to prevent relative movement between the gold wheel and the wire by mooring it at an appropriate location above the wire, connect the grips of adjacent wires to each other. A wire protection method for measures against strong winds, which is characterized in that