JPH09322365A - Device for holding electric wire of non-circular section - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a device for holding an electric wire, a device capable of holding the electric wire easily and firmly without impairing such an electric wire of non- circular section by providing the connected part of a clamp body and a clamp cover on a direction where the electric wire of non-circular section is easily hold. SOLUTION: No bolt is used on a load connecting shaft 6 which pulls a clamp cover 2 toward a clamp body 1 when the clamp cover 2 is in a closed state against the clamp body 1. A cylindrical split collar 3, which has recessed and projected parts on its inside surface to fit the projected and recessed parts on the external circumferential part of an electric wire of non-circular section, is provided on the internal circumferential part of the holding groove of the clamp body 1 and that of the clamp cover 2. This collar is split into two pieces at the circumferential direction and these two split bodies are connected by a connecting plate 5. In addition, a connecting strip 4 surrounding the external circumference of the collar is passed through a guiding part attached to the load connecting shaft 6 so as to be able to slide and also passed through each hole provided on the external circumferential part of the two split bodies of the collar. Then, a design for preventing the strip from coming off is provided at both ends of the strip.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to the field of overhead power transmission lines, and more particularly to a non-circular cross-section electric wire gripping device for attaching a spacer or the like to a transmission line using a non-circular cross-section structure in a boltless manner.

[0002]

2. Description of the Related Art A boltless gripping device is used for a wire gripping portion of a transmission line spacer. This gripping device includes a clamp main body having a substantially semicircular gripping groove, a clamp lid having a substantially semicircular gripping groove that can be opened and closed with respect to the clamp main body, and a state in which the clamp lid is closed. At times, the skeleton of the gripping portion is constituted by the load connecting shaft that pulls the clamp lid toward the clamp body side. The pulling force of the load connecting shaft is mainly caused by the compressive force of the spring that causes the axial force to the shaft.

The electric wire gripping device as described above was originally developed on the basis of a circular cross-section electric wire, but it is necessary to grip a separately developed non-circular cross-section electric wire with respect to this kind of gripping device. It has occurred. Conventionally, an electric wire gripping device for gripping an electric wire having a non-circular cross section has been proposed, and is disclosed in, for example, Japanese Patent Laid-Open No. 6-70432. In this proposed example, a recess that matches the outer shape of the half-divided cross section of a non-circular cross-section electric wire, for example, a split collar that forms a groove or the like that can accommodate a diagonal projection is hinged so that it can be opened and closed. It has a cylindrical shape that holds a non-circular cross-section electric wire inside by closing. In addition, a clamp body having a substantially semicircular grip groove and a clamp lid having a substantially semicircular grip groove are provided to form a clamp mechanism for sandwiching the tubular split collar, and the clamp body side push With the bolts tightened and spring compressed, T at the load connecting shaft
Remove the shaped bolt from the clamp lid, sandwich the split collar with the non-circular electric wire inserted between the clamp body and the clamp lid, rotate the T-shaped bolt 90 degrees to temporarily fix it, then loosen the push bolt and remove it. The T-shaped bolt is attached to the clamp lid by the restoring force of the spring in the state, and the clamp lid is further pulled toward the clamp body side, and the conductor is gripped by the clamping force between the clamp body and the clamp lid. .

In the above-mentioned tubular split collar, the end portion of the split collar is fixed to each of the split collars by using a loop-shaped belt-like connecting member so that the split collar holding the conductor does not drop from the clamp body. ing. The outer peripheral surface of the split collar and the inner peripheral surfaces of the clamp body and the clamp lid are aligned with each other, so that the tubular split collar can rotate 180 ° inside the clamp body and the clamp lid. The strip-shaped connecting member slidably passes through an intermediate portion of the clamp body and a guide portion provided on the clamp lid of the clamp lid so that the strip-shaped connecting material does not drop from the wire gripping portion and allows the rotation.

[0005]

In the above-described conventional non-circular cross-section electric wire gripping device, when the clamp lid is opened and the non-circular electric wire is sandwiched, there is a T-shaped bolt on the side for receiving the electric wire, which is one of the halves of the collar. There is a problem that the part hits, the split collar is difficult to open, and the electric wire is caught in the T-shaped bolt and damages the electric wire.

Therefore, the problems to be solved by the present invention (objects)
By providing the connecting portion of the clamp main body and the clamp lid in the direction in which the electric wire having the non-circular cross section can be easily gripped, the other end side in the circumferential direction of the clamp lid is pivotally attached to the end of the external extension portion of the load connecting shaft, for example. It is an object of the present invention to provide a non-circular cross-section electric wire gripping device that can easily and surely hold the non-circular cross-section electric wire without damaging the non-circular cross-section electric wire by configuring the connecting portion with the non-circular cross-section electric wire.

[0007]

An electric wire gripping device having a non-circular cross section provided by the present invention is a clamp body having a gripping groove of a substantially semicircular shape, and a substantially semicircular shape that can be opened and closed with respect to the clamp body. The skeleton of the gripping portion is composed of a clamp lid having a grip groove and a load connecting shaft that pulls the clamp lid toward the clamp body side when the clamp lid is closed.
Further, in the inner peripheral portions of the holding groove of the clamp body and the holding groove of the clamp lid, a non-circular cross-section electric wire having a structure in which a tubular split collar having inner surface irregularities matching the irregularities of the outer peripheral portion of the non-circular cross-section electric wire is provided. In the gripping device, the collar is divided into two in the circumferential direction, and the two divided bodies are connected by a connecting plate. Therefore, a band-shaped connecting member that surrounds the outer periphery of the collar is provided. , While slidably passing through a guide part attached to the load connecting shaft,
The collar is divided into two parts, which are also passed through holes provided in the outer peripheral part of the collar and are provided with stoppers on the end side.

According to the above structure, the tubular split collar can freely move within the range of about 180 ° over which the belt-shaped connecting member extends, so that the unevenness of the non-circular cross-section electric wire and the unevenness of the inner surface of the collar match. Hold the non-circular electric wire in the open,
The split collar holding the electric wire is placed in the grip groove of the clamp body, the clamp lid is closed, and temporarily fixed to the clamp body. At this time, since the band-shaped connecting material is passed through the guide part of the load connecting shaft for the clamp lid, the split collar and the free end side of the clamp lid can be freely opened, and the non-circular electric wire can be gripped without being caught. You can set it to the position you want.

The retaining means may be a stopper integrated with the end of the belt-like connecting member. In addition, the clamp lid has a hook on one end side in the circumferential direction, and the other end side in the circumferential direction is pivotally attached to the end portion of the external extension portion of the load connecting shaft, and at the external extension portion of the load connecting shaft. It is preferable to provide the guide part.

[0010]

1 to 3 show an embodiment of the present invention, in which FIG. 1 shows an entire non-circular cross-section electric wire gripping device, and FIGS. 2 and 3 show a split collar and a belt-like connection in the same device. The material is shown. The non-circular cross-section electric wire gripping device of this embodiment, as shown in FIG. 1, has a clamp body 1, a clamp lid 2, a load connecting shaft 6 for attracting the clamp lid 2 to the clamp body 1 side, and an axial force applied thereto. A coil-shaped spring 12 (compression spring) to be generated and a push bolt 10 externally screwed into the frame portion of the clamp body 1 for pushing the load connecting shaft 6 to the outside and compressing the spring 12 are provided. Further, it is provided with a split collar 3 for holding the electric wire 9 having a non-circular cross section, and a strip-shaped connecting member 4 for connecting the split cover 3 to the clamp side.

As shown in FIG. 3, the split cover 3 has a tubular shape by connecting one side edge with a connecting plate 5 made of an elastic material such as a leaf spring. In FIG. 1, as shown in FIG. 1, the electric wire 9 having a non-circular cross-section has irregularities corresponding to the irregular shape of the outer peripheral portion. Therefore, the non-circular cross-section electric wire 9 is opened by opening from the side edge portion on the opening side of the split cover so as to be sandwiched.

Further, as shown in FIG. 2, each split cover of the split cover 3 is provided with holes 11, 11 at the outer peripheral portion thereof, and both ends of the strip-shaped connecting member 4 are provided in these holes 11, 11. A stopper 13 is provided at the protruding end to prevent the stopper from coming off. Further, the strip-shaped connecting member 4 has a load connecting shaft 6 at a substantially middle portion, as shown in FIGS. 1 and 3.
Is slidably passed through a hole of a guide 7 provided on the outer protruding portion of the. With this, the split cover 3
Can rotate about 180 ° with respect to the guide 7.

A gripping procedure for an electric wire having a non-circular cross section by the gripping device of the present embodiment having the above-mentioned respective parts will be described below.
First, as shown in FIG. 1, the load connecting shaft 6 is pushed up by screwing a predetermined amount of the push bolt 10 and the clamp lid 2 is opened, and then the split collar 3 is opened to interrupt the non-circular cross-section electric wire 9. The electric wire 9 is sandwiched between the two collars 3. At this time, the halved collar 3 is made so that the irregularities of the non-circular cross-section electric wire 9 and the undulated collar 3 are aligned.
Is adjusted to rotate. The rotation adjustment is performed by sliding the guide 7 with the belt-shaped connecting member 4. If the rotation adjustment is performed in this way, the split collar 3 is restored to the original tubular shape by the elastic return force of the connecting plate 5 at the split portion, and thus the holding posture by the split collar 3 is supported. It The split collar 3 in the state of holding the electric wire is set in the grip groove of the clamp body 1.

When the holding condition of the electric wire 9 having the non-circular cross section is adjusted as described above, the clamp lid 2 is closed, and the hook 8 on the open end side is hooked on the clamp main body 1 and then the push bolt 10 is loosened. The load restoring shaft 6 is pulled toward the clamp body 1 side by the elastic restoring force of the compressed spring 12, and is attached to the clamp body 1 side along with it, so that the load connecting shaft 6 is divided into two by the clamping force by the clamp body 1 and the clamp lid 2. The electric wire 9 having a non-circular cross section is clamped and held via the collar 3.

[0015]

According to the present invention as described above, by providing the connecting portion between the clamp body and the clamp lid in the direction in which the non-circular cross-section electric wire can be easily gripped, the non-circular cross-section electric wire is not damaged. It is possible to achieve the intended problem (objective) of providing a non-circular cross-section electric wire gripping device capable of easily and reliably gripping a wire, which is excellent in workability.

[Brief description of drawings]

FIG. 1 is a side view of a non-circular electric wire gripping device according to an embodiment of the present invention.

FIG. 2 is a side view of the split collar in the non-circular electric wire gripping device according to the embodiment of the present invention.

FIG. 3 is a front view of the split collar in the non-circular electric wire gripping device according to the embodiment of the present invention.

[Explanation of symbols]

 1 Clamp main body 2 Clamp lid 3 Divided collar 4 Band-shaped connecting material 5 Connecting plate 6 Weighted connecting shaft 7 Guide 8 Hook 9 Non-circular electric wire 10 Push bolt 11 Band-shaped connecting material through hole 12 Spring 13 Stopper

Claims (3)

[Claims] 1. A clamp body having a substantially semicircular gripping groove, a clamp lid having a substantially semicircular gripping groove that can be opened and closed with respect to the clamp body, and a state in which the clamp lid is closed. At times, the skeleton of the gripping portion is constituted by the load connecting shaft that pulls the clamp lid toward the clamp body side, and further, in the inner peripheral portion of the gripping groove of the clamp body and the gripping groove of the clamp lid, the outer peripheral portion of the non-circular cross-section electric wire. A non-circular cross-section electric wire gripping device having a structure in which a tubular split collar having inner surface irregularities conforming to irregularities is provided, and the collar is divided into two in the circumferential direction, and the two divided bodies are connected by a connecting plate. There is provided a belt-like connecting member that surrounds the outer periphery of the collar. The belt-like connecting member is slidably passed through a guide portion attached to the load connecting shaft, and each of the two divided bodies of the collar is provided. Through even the holes with the peripheral portion, stopper is granted missing at the end side, a non-circular cross-section wire gripping device. 2. The non-circular cross-section electric wire gripping device according to claim 1, wherein the retaining means comprises a stopper integrated with an end of the belt-shaped connecting member. 3. The clamp lid has a hook on one end side in the circumferential direction, and the other end side in the circumferential direction is pivotally attached to the end portion of an external extension portion of the load connecting shaft, and the outside of the load connecting shaft. The non-circular cross-section electric wire gripping device according to claim 1, wherein the guide portion is provided in the extension portion.