JP5279020B2 - Wedge wedge clamp - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a wedged anchor clamp wherein assembly on a support, such as a steel tower or a utility pole, is facilitated and it is possible to improve workability and completely prevent a part from falling during assembling work. <P>SOLUTION: The wedged anchor clamp includes: a clamp body 10 having a groove 10b in which an electric wire 1 is inserted; a wedge retainer 14 placed on the electric wire 1 in the groove 10b; a center bolt 13a that penetrates the clamp body 10 and the wedge retainer 14 and fixes them; a wedge 16 press fit in between the wedge retainer 14 and the electric wire 1 to fix the electric wire 1; a pair of parallel coupling plates 12 whose one ends are pivotably supported by the inserted center bolt 13a; and a reinforcement plate 15 that is attached to the lower part of the exterior of the clamp body 10 and whose upper part covers the coupling plates 12 to allow the center bolt 13a to penetrate. The anchor clamp is provided with collars 11. The collars are cylindrically extended in the areas between both sides of the clamp body 10 and the reinforcement plate 15 where the center bolt 13a is inserted and communicate with them. Thus the collars separately pivotably support the coupling plates 12 on both sides of the clamp body 10. <P>COPYRIGHT: (C)2010,JPO&amp;INPIT

Description

  The present invention relates to a wedge-shaped retention clamp, and more particularly to a wedge-shaped retention clamp that connects a clamp body, in which an electric wire is held and fixed by a wedge effect, to a support such as a steel tower via a connection plate.

2. Description of the Related Art Conventionally, a wedge-shaped retention clamp includes a wedge presser in which an electric wire is inserted into a groove portion having a U-shaped cross section of a clamp body and pivoted by a center bolt that penetrates the upper portion of the groove portion. The electric wire is gripped and fixed by the wedge effect of a wedge inserted (press-fitted) in between, and one end of a pair of parallel connection plates is pivotally supported at both ends of the center bolt, and the other end is connected to a support such as a steel tower. The structure of a wedge-shaped retention clamp that stretches an electric wire in a tight-wire state is well known (see, for example, Patent Document 1 and Patent Document 2 below).
Registered Utility Model No. 2586645 Registered Utility Model No. 2596287

A conventional wedge-shaped retaining clamp having the above-described structure will be described with reference to FIGS. FIG. 5 is an exploded perspective view showing an embodiment of a conventional wedge-shaped retention clamp. FIG. 6 is a perspective view showing a state in which the wedge-shaped retention clamp shown in FIG.
As shown in FIG. 5, an embodiment of a conventional wedge-shaped retention clamp includes a clamp body 20 having a U-shaped groove 20 b into which the electric wire 1 is inserted, and the electric wire 1 within the groove 20 b of the clamp body 20. The wedge retainer 14 to be disposed, the center bolt 13a extending outward from the inside of the groove portion 20b and passing through the clamp body 20 and the wedge retainer 14 together, and the wedge retainer 14 and the electric wire 1 are inserted. The wedge 16 that presses (fixes) the electric wire 1 in the groove portion 20b by the wedge effect and the ends of the center bolt 13a that pass through the clamp body 20 are extended in parallel to each other. And a connecting plate 22 that connects the other end to a support (not shown: steel tower, utility pole, etc.). Further, the clamp body 20 extends in a band shape on both outer sides of the body, the lower part is closely attached to the U-shape and is integrally fixed, and the upper part is bent outward to cover the connecting plate 22 so as to cover the center bolt 13a. Further provided is a reinforcing plate 25 that penetrates both ends of the shaft.

  Here, the clamp body 20 is bent so that the cross section has a U-shaped groove portion 20b, and is formed so that the shape of both side surfaces thereof is a substantially right-angled triangle, so that the wire 1 is received in the groove portion 20b bent in the U shape. It has become. Therefore, the diameter of the groove 20b, that is, the distance between both side surfaces is substantially equal to the diameter of the electric wire 1. The clamp body 20 is provided with a reinforcing plate 25 in which holes 20a through which the center bolts 13a pass are opened on both sides of the U-shape, and holes 25a through which the center bolts 13a further pass are opened on both outer sides of the holes 20a. It is formed to reinforce. That is, the hole 20a of the clamp body 20 through which the center bolt 13a passes and the hole 25a of the reinforcing plate 25 for reinforcing the hole are provided so as to be aligned in a straight line. Further, the reinforcing plate 25 is fixed by a screw 25b below the U-shape of the clamp body 20.

  Further, as shown in FIG. 5, the center bolt 13a is inserted (penetrated) into the holes 20a and 25a of the clamp body 20 and the reinforcing plate 25 and fastened with the center nut 13b. The wedge retainer 14 and the connecting plate 22 are arranged between the outer side of the clamp body 20 and the reinforcing plate 25 in the groove 20b of the clamp body 20, and are inserted so as to penetrate and pivot together. The wedge retainer 14 has a side surface formed in an isosceles triangle, the thickness thereof is substantially equal to the interval between the groove portions 20b of the clamp body 20, and a lower surface corresponding to the bottom of the isosceles triangle has a wedge receiving surface in contact with the wedge 16. It has become. Further, the wedge retainer 14 has a hole 14a in the vicinity of the center of the side surface of the isosceles triangle so that the center bolt 13a passes therethrough. On the other hand, the connecting plate 22 extends in a strip shape in parallel with a pair of thin plate-like surfaces facing each other, and is bent so that its substantially central portion is in X-shape contact. The coupling member 22b is integrally coupled. The connecting plate 22 has a hole 22a at one end of both ends extending in parallel with a pair, and the hole 22a side is installed between the clamp body 20 and the reinforcing plate 25, and the center bolt 13a. It is pivoted by inserting. Further, a hole (not shown) is opened at the other end different from the hole 22a at one end of the connecting plate 22 pivotally supported by the center bolt 13a, and the rear coupling member 22c of the bolt and nut is attached. Are connected to supports such as steel towers and utility poles.

  Then, as shown in FIG. 5, the electric wire 1 is inserted into the groove portion 20 b of the clamp body 20 by inserting (pressing) the wedge 16 between the wedge retainer 14 pivotally supported by the center bolt 13 a and the electric wire 1. Grip and fix. A jumper fitting 17 for guiding the electric wire 1 shown in FIG. 1 is secured to the wedge 16 by fastening a U-shaped bolt 18a and a nut 18b.

By the way, the conventional wedge-shaped detent clamp having such a configuration is such that an operator is placed at an unstable high position of the support in a state where the electric wire 1 is previously stretched on a support (not shown) such as a steel tower or a utility pole. It was installed by climbing, and workability was poor, and it was not easy to position and assemble. Specifically, the worker climbs up each support shown in FIG. 5 on the support, and as shown in FIG. 6, first, the tensioned electric wire 1 has a U-shaped cross section of the clamp body 20. It arrange | positions so that the groove part 20b may be covered upside down. Then, after positioning the wedge retainer 14 and the connecting plate 22 between the clamp body 20 and the reinforcing plate 25 and positioning (maintaining) them in the groove 20b of the clamp body 20, the center bolt 13a is inserted. (Penetration) and the wedge retainer 14 and the connecting plate 22 are pivotally supported integrally with the clamp body 20.
However, in such a conventional wedge-shaped retention clamp, one center bolt is maintained in a state in which an operator positions the connecting plate 22 and the wedge retainer 14 on the clamp body 20 and maintains the three parts on the support. Since the work at a high place where 13a is inserted (penetrated) and assembled together is very unstable and difficult, it was necessary to pay careful attention not to drop the parts.

As described above, the conventional wedge-shaped retaining clamp is used for assembling the three parts of the clamp body 20, the connecting plate 22, and the wedge retainer 14 together with one center bolt 13a at an unstable high place of the support. The workability was poor, and meticulous attention was required not to drop the parts.
Further, in the conventional wedge-shaped retention clamp, as shown in FIG. 6, the electric wire 1 is assembled with the clamp main body 20 covered, so that the clamp main body 20 rotates due to contact or strong wind during the assembling work and is detached from the electric wire 1. There is also a problem that the possibility of falling is high.
Further, in the conventional wedge-shaped retention clamp, as described above, when the center bolt 13a is inserted, one operator grips the center bolt 13a, and then clamps the two parts of the connecting plate 22 and the wedge retainer 14. Since positioning to the main body 20 is difficult, there has been a problem that a plurality of workers are required for assembly work.

  The present invention has been made in view of the above points, and its purpose is to facilitate assembly on a support such as a steel tower or a utility pole, to improve workability, and to prevent complete fall of components during assembly work. It is an object of the present invention to provide a wedge-shaped retention clamp capable of realizing the above.

  In order to solve the above-described problems, the present invention includes a clamp body having a U-shaped groove portion into which an electric wire is inserted, a wedge presser disposed on the electric wire in the groove portion, and the clamp body and the wedge presser. A center bolt that penetrates and is fixed, a wedge that is press-fitted between the wedge retainer and the electric wire to fix the electric wire in the groove, and one end that extends in parallel with each other at both ends of the shaft of the center bolt that penetrates the clamp body A connecting plate that pivotally supports the other end and connects the other end to the support, and a center bolt that covers the connecting plate with the lower part of the clamp body being fixed in a U-shape and fixed integrally, and the upper part being bent outward. A wedge-shaped retention clamp having a reinforcing plate that penetrates both ends of the shaft, and extends in a cylindrical shape from the hole on both sides of the clamp body to the hole of the reinforcing plate that covers the outside so that the center bolt can penetrate. The cylinder Each separately on both sides of the clamp body by the outer peripheral shaft of providing a color to be pivoted to advance integrally a pair of connecting plates.

  Here, with the U-shaped groove of the clamp body turned upside down and covered from the upper part of the electric wire, a wedge retainer and a center bolt are attached, and the connecting plate pivoted integrally with the clamp body is suspended by its own weight. It is preferable to use instead of the weight. The collar extends in a cylindrical shape between the holes on both sides of the clamp body and the holes on the reinforcing plate that covers the outside, and both ends of this cylindrical shape are fixed by caulking to the holes on the clamp body and the reinforcing plate. It is preferred that

As described above, according to the wedge-shaped retaining clamp according to the present invention, since the clamp body having a large part mass and the connecting plate are integrated in advance by the collar, it is necessary to pay close attention to dropping the part even on a support such as a steel tower or a utility pole. Otherwise, it can be easily assembled and workability can be improved.
In addition, according to the wedge-shaped retention clamp according to the present invention, the connecting plate substitutes for the weight when assembling the clamp body on the electric wire, and after covering the electric wire, it is difficult to come off from the electric wire. This is a complete fall prevention during assembly work.
Further, according to the wedge-shaped retention clamp according to the present invention, when the center bolt is inserted into the clamp body, the clamp body and the connecting plate are connected in advance so that the connecting plate can be operated by hand. It becomes a simple operation of just inserting, and it is easy to assemble without requiring a plurality of workers.

Next, an embodiment of a wedge-shaped retention clamp according to the present invention will be described in detail with reference to the accompanying drawings. FIG. 1 is an exploded perspective view showing an embodiment of a wedge-shaped retention clamp according to the present invention. FIG. 2 is a perspective view showing a mounting structure of the connecting plate 12 shown in FIG. FIG. 3 is a cross-sectional view showing a state after assembly in the cross section taken along the line AA shown in FIG. 4 is a perspective view showing a state in which the wedge-shaped retention clamp shown in FIG.
The components other than the clamp body 10, the reinforcing plate 15, the collar 11, and the connecting plate 12 shown in FIG. 1 are the same as those in the prior art shown in FIG. 5, and the same reference numerals are used for the same components. doing.

  As shown in FIG. 1, an embodiment of a wedge-shaped retention clamp according to the present invention includes a clamp body 10 having a U-shaped groove portion 10b into which a wire 1 is inserted, as in the prior art shown in FIG. A wedge retainer 14 disposed on the electric wire 1 in the groove 10b, a center bolt 13a that penetrates and fixes the clamp body 10 and the wedge retainer 14 together, and the wedge retainer 14 and the electric wire 1 are inserted (press-fit) A wedge 16 for fixing the electric wire 1 in the groove 10b, and a connecting plate 12 for pivotally supporting a pair of parallel extending ends on both side surfaces of the clamp body 10 and connecting the other end to a support. The lower part of the clamp body 10 is closely attached to the U-shape and fixed integrally, and the upper part is bent outward to cover the connecting plate 12 and include a reinforcing plate 15 that penetrates both ends of the shaft of the center bolt 13a. . Further, in the present embodiment, unlike the prior art shown in FIG. 5, the two thin plate-like connecting plates 12 are integrated in advance by connecting members such as bolts and nuts (see reference numeral 22b shown in FIG. 5). The clamp body 10 extends in a cylindrical shape from both sides of the clamp body 10 so as to penetrate the center bolt 13a so as to penetrate therethrough, and communicates with the outer periphery of the clamp body 10 by the cylindrical outer shaft. A collar 11 for pivotally supporting the pair of connecting plates 12 separately in advance is provided on each of the two sides.

  That is, in one embodiment of the wedge-shaped retention clamp according to the present invention, the collar 11 is inserted and communicated between the bolt holes through which the center bolt 13a between the clamp body 10 and the reinforcing plate 15 passes, and this collar 11 is a component. The clamp main body 10 and the connecting plate 12 having a large mass are integrated in advance so that the connecting plate 12 can be operated by hand (not touched) during assembly.

  Here, the clamp body 10 is bent so that the cross section has a U-shaped groove portion 10b, and is formed so that the shape of both side surfaces thereof is a substantially right triangle, so that the electric wire 1 is received in the groove portion 10b bent in the U shape. It has become. Therefore, the diameter of the groove 10b, that is, the distance between both side surfaces is substantially equal to the diameter of the electric wire 1. As shown in FIG. 2, the clamp body 10 has a hole 10a through which a center bolt 13a (see FIG. 1) passes on both side surfaces of a U-shaped cross section, and a cylindrical shape from both outer sides of the U-shaped side surface. And a reinforcing plate 15 having a hole 15a in which the other end of the collar 11 extending outside the hole 10a is further inserted and fixed. . That is, the holes 10a and 15a of the clamp body 10 and the reinforcing plate 15 are arranged side by side on a straight line in the direction through which the center bolt 13a passes, and are opened to a hole diameter matched to the cylindrical outermost periphery of the collar 11. It is provided so that both ends can be fixed by inserting the collar 11. As described above, the collar 11 is inserted so as to be communicated between the hole 15a of the reinforcing plate 15 that covers the outside of the clamp body 10 and to the hole 10a of the clamp body 10. The connecting plate 12 is pivotally supported integrally by being simultaneously inserted into a hole 12a opened at one end of the plate 12. Then, a new collar 11 is inserted into the other side of the clamp body 10 shown in FIG. 2 to pivotally support the connecting plate 12, so that the pair of connecting plates 12 shown in FIG. 10 is provided. As described above, in the present embodiment, two connecting plates that are previously coupled in pairs as in the prior art shown in FIG. 5 are not provided, but are separately provided by the collars 11 on both sides of the clamp body 10 shown in FIG. It is characterized by providing a pair of connecting plates 12 that are pivotally supported by the two.

  Further, as shown in FIG. 3, the collar 11 extends in a cylindrical shape between both side surfaces of the U-shaped groove portion 10 b of the club body 10 and the reinforcing plate 15, and both ends of the cylindrical shape are clamped body 10. It is desirable to fix each of the holes 10a and 15a (see FIG. 2) between the reinforcing plate 15 and the reinforcing plate 15 by caulking. In addition, it is not limited to crimping the collar 11, For example, it is also possible to fix by welding, a screw, etc. As shown in FIG. 3, the collar 11 fixed in this way can be formed as a guide path when the center bolt 13a is inserted through a hollow hole extending in a cylindrical shape. Further, when the center bolt 13a is inserted (penetrated) into the clamp body 10 via the collar 11, the center bolt 13a is pivotally supported by simultaneously penetrating the wedge retainer 14 in the groove portion 10b as in the prior art. As shown in FIG. 1, the wedge retainer 14 has a side surface formed in an approximately isosceles triangle, the thickness thereof is substantially equal to the interval between the groove portions 10b of the clamp body 10, and the lower surface corresponding to the bottom of the isosceles triangle is formed. The wedge receiving surface is in contact with the wedge 16. Further, the wedge retainer 14 has a hole 14a in the vicinity of the center of the side surface of the isosceles triangle so that the center bolt 13a passes therethrough. Thus, in this embodiment, when the pair of connecting plates 12 are pivotally supported by the clamp body 10 with the collar 11 in advance, the center bolt 13a penetrates the clamp body 10 and is fixed by fastening the center nut 13b. By providing only the presser 14 together, the assembly is completed so as to improve workability.

  Then, by inserting (pressing in) the wedge 16 between the wedge retainer 14 pivotally supported by the center bolt 13a shown in FIG. 1 and the electric wire 1, the electric wire 1 is connected to the clamp body 10 as shown in FIG. Can be held and fixed in the groove 10b. Further, after the electric wire 1 is held and fixed to the wedge 16, a jumper fitting 17 for guiding the electric wire 1 shown in FIG. 1 is fixed by fastening a U-shaped bolt 18a and a nut 18b.

  In an embodiment of the wedge-shaped retention clamp according to the present invention formed as described above, the electric wire 1 is stretched in advance on a support (not shown) such as a steel tower or a utility pole as in the prior art shown in FIG. In this state, a worker climbs and attaches to an unstable high place of the support, and as shown in FIG. 4, a section U of the clamp body 10 in which the connecting plate 12 is pivotally supported integrally with the stretched electric wire 1. The character-shaped groove portion 10b is installed so as to be turned upside down and the assembly work is executed. Then, as shown in FIG. 4, when the tensioned electric wire 1 is installed so as to cover the clamp main body 10, the connecting plate 12 integrally supported by the clamp main body 10 hangs down by its own weight and instead of the weight. It can be used, and even if an external force such as contact or strong wind is applied during work at a high place, it can be maintained in a stable installation state (covered state) without rotating and coming off from the electric wire 1.

  Further, when the electric wire 1 is covered with the clamp body 10, the two connecting plates 12 are not integrated but are pivotally supported by the clamp body 10 with separate collars 11, respectively, as in the prior art shown in FIG. It is not necessary to couple with a coupling member, and the electric wire 1 can be inserted from between these separate parts, and the clamp body 10 can be easily covered and installed. The pair of connecting plates 12 pivotally supported on both sides of the clamp body 10 are installed after the clamp body 10 is placed on the electric wire 1 and then the other free end that is not pivoted (hangs as shown in FIG. 4). A lower end) has a hole 12b, and a bolt and nut rear coupling member is attached and integrally coupled so that it can be connected to a support such as a steel tower or a utility pole as in the prior art shown in FIG.

Then, as shown in FIG. 4, the wedge retainer 14 is positioned and the center bolt 12a is inserted into the groove 10b of the clamp body 10 installed on the electric wire 1, so that the wedge retainer 14 is inserted into the groove 10b. Pivot to one. That is, in this embodiment, since the clamp body 10 and the connecting plate 12 are connected in advance, the connecting plate 12 can be operated by hand, and a simple assembly is performed simply by inserting the center bolt 13a while holding the wedge retainer 14. As a result, a single worker can easily perform the assembly without requiring a plurality of workers.
Thereafter, by inserting (pressing in) the wedge 16 shown in FIG. 1, the electric wire 1 can be held and fixed in the groove portion 10 b of the clamp body 10, and the assembly work for attaching the wedge-shaped retention clamp to the electric wire 1 is completed.

As described above, according to an embodiment of the wedge-shaped retention clamp according to the present invention, the clamp body 10 having a large component mass and the connecting plate 12 shown in FIG. Even at an unstable high place on the support, it is possible to easily assemble even if it is not necessary to pay careful attention to dropping the parts, and the workability can be improved.
In addition, according to the present embodiment, as shown in FIG. 4, when the electric wire 1 is covered with the clamp body 10 and assembled, the connecting plate 12 serves as a weight, and after the electric wire 1 is covered, it is difficult to come off the electric wire 1. Therefore, the center bolt 13a can be easily inserted thereon, and it is possible to completely prevent the parts from being detached or dropped during the assembly operation.
Furthermore, according to the present embodiment, when the center bolt 13a is inserted into the clamp body 10, the clamp body 10 and the connecting plate 12 are connected in advance so that the connecting plate 12 can be operated by hand. However, it becomes a simple operation of only inserting the center bolt 13a, and the assembly becomes easy without requiring a plurality of workers.

As mentioned above, although the embodiment of the wedge-shaped retention clamp by this invention was described in detail, this invention is not limited to embodiment mentioned above, It can change in the range which does not deviate from the summary.
For example, the embodiment having a pair of connecting plates extending in parallel has been described in detail, but the embodiment is not limited to this, and the clamp body holding the electric wire is pulled by the connecting plate so that the electric wire is in a tight state. When a pulling metal fitting for the connecting plate to be used is necessary, it may be appropriately provided on the connecting plate, and it is also possible to prepare a pulling metal fitting to be separately assembled to the connecting plate.

The disassembled perspective view which shows one Embodiment of the wedge-shaped retention clamp by this invention. The perspective view which shows the attachment structure of the connection board shown in FIG. Sectional drawing which shows the state after the assembly in the AA line cross section shown in FIG. The perspective view which shows the state which attaches the wedge-shaped retention clamp shown in FIG. 1 to an electric wire. The disassembled perspective view which shows embodiment of the conventional wedge-shaped retention clamp. The perspective view which shows the state which attaches the wedge-shaped retention clamp shown in FIG. 5 to an electric wire.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Electric wire 10 Clamp main body 10a Hole 10b Groove part 11 Collar 12 Connection board 12a Hole 13a Center bolt 13b Center nut 14 Wedge holder 14a Hole 15 Reinforcement board 15a Hole 16 Wedge 17 Jumper metal fitting 18a U-shaped bolt 18b Nut

Claims (3)

A clamp body having a U-shaped groove portion into which an electric wire is inserted; a wedge retainer disposed on the electric wire in the groove portion; a center bolt for penetrating and fixing the clamp body and the wedge retainer together; and the wedge A wedge for press-fitting between the presser and the electric wire to fix the electric wire in the groove, and a pair of one end extending in parallel to the shaft ends of the center bolt penetrating the clamp body are pivotally supported. A connecting plate for connecting the other end to the support, and a lower portion of the clamp body that is in close contact with the U-shape and is integrally fixed, and the upper portion is bent outward to cover the connecting plate, and both ends of the shaft of the center bolt In a wedge-shaped retention clamp comprising a reinforcing plate that penetrates
Between the holes on both sides of the clamp body and the holes of the reinforcing plate covering the outside so as to penetrate the center bolt, it extends in a cylindrical shape and communicates with both sides of the clamp body by the cylindrical outer peripheral shaft. A wedge-shaped retention clamp characterized in that a collar for pivotally supporting the pair of connecting plates in advance is provided separately. The wedge-shaped retention clamp according to claim 1,
With the U-shaped groove of the clamp body turned upside down and covered from the upper part of the wire, the wedge retainer and the center bolt are respectively attached, and the connecting plate pivoted integrally with the clamp body is suspended by its own weight. A wedge-shaped retention clamp that is used in place of a weight when lowered. The wedge-shaped retention clamp according to claim 1 or 2,
The collar extends in a cylindrical shape from a hole on both sides of the clamp body to a hole in the reinforcing plate that covers the outside, and both ends of the cylindrical shape are caulked to holes in the clamp body and the reinforcing plate, respectively. A wedge-shaped retention clamp characterized by being fixed by

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