JP2011171256A - Device and method for fixing insulator chain - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a device capable of easily performing release of a connecting condition with overhead line metal fitting and return work of the connecting condition of an insulator chain. <P>SOLUTION: In the insulator chain fixing device 1 wherein an insulator chain 25 formed by connecting a plurality of insulators 26 in series is fixed in the axial tension state, the insulator chain fixing device 1 includes a screw fastening body 2 arranged along the insulator chain 25 and expanding and contracting in an axial direction of the insulator chain 25, and an operation member 20 which makes the screw fastening body 2 expand and contract. The screw fastening body 2 is provided with a pair of fixed side screws 3, 3 wherein one end is connected with the insulator 26 on both ends of the insulator chain 25, and a movable side screw 15, wherein both ends are engaged with the other end of the pair of fixed side screws 3, 3, being rotatable around axes of the pair of fixed side screws 3, 3. The operation member 20 is arranged on the movable side screw 15. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  TECHNICAL FIELD The present invention relates to an insulator series fixing device and a fixing method, and more particularly, to an insulator series fixing apparatus and a fixing method suitable for fixing an insulator series formed by connecting a plurality of insulators in series in an axially pulled state.

  Conventionally, in overhead wire work such as electric wire repair, a tensioner such as a shimmer is installed between the utility pole and the electric wire, and the load from the electric wire is borne by the tensioner to cause slack in the insulator chain. Then, the connection state between the insulator series and the overhead wire fitting such as a clamp is released to perform work such as electric wire repair, and after the work is completed, the insulator series is again connected to the overhead wire fitting.

  In such an overhead wire work, when the insulator series is connected to the overhead wire fitting again after the work such as repairing the electric wire, the insulator series is fixed by using a rope or the like to eliminate the slack. It is supported by human power, and lion smelting is connected to overhead wire fittings.

  For example, since the above-described insulator series is formed by connecting 5 to 7 insulators having a weight of 5.8 kg, the total weight is 7.29 to 40.6 kg. Since the worker supports the overhead ladder by human power, the work is very time-consuming and the burden on the worker increases.

  In addition, the insulators that have been loosened by removing the load from the electric wires are designed so that each insulator can move freely. It is difficult for inexperienced workers to secure the lion chain in a state where the slack is eliminated.

  In order to cope with the above-described problems, a method of mechanically fixing the insulator series by a device without using human power can be considered. An example of an apparatus for mechanically fixing an insulator series is described in FIGS.

  The device described in FIG. 1 of Patent Document 1 includes a pair of attachments and a hydraulic cylinder, a link rod, and a turnbuckle that are provided in series between the attachments. It is used by attaching to the insulators at both ends.

  The device described in FIG. 4 of Patent Document 1 includes a pair of arms, a pair of crank rods provided between the arms, and a hydraulic ram provided between intermediate portions of the crank rods. The pair of arms are used by attaching to the insulators at both ends of the insulator series.

  By the way, in the apparatus configured as described above, by operating the hydraulic cylinder in a state of being attached to the insulator series and shortening the link rod, or by operating the hydraulic ram and bending the crank rod, Although the lever series can be fixed in a state in which the slack has occurred, it cannot be structurally fixed in a state in which the slack has been eliminated by pulling the lever series in the axial direction.

  For this reason, when applying to the work where the operator supports the insulator series by manpower on the overhead ladder, it is not possible to eliminate the slack of the insulator series. The slack must be eliminated, the work is troublesome, the burden on the operator is increased, and further skill is required.

  In addition, the above apparatus is a large and heavy apparatus comprising a hydraulic cylinder for shortening the link rod, a hydraulic ram for bending the crank rod, a hydraulic cylinder, a hydraulic supply device for operating the hydraulic ram, etc. It is difficult for the worker to support with the Choshiren above.

JP 2000-59936 A

  The present invention has been made in view of the conventional problems as described above, and in an overhead wire work such as electric wire repair, the operation of releasing the connection between the lever series and the overhead wire fitting such as a clamp and the return of the connection are skillful. It is an object of the present invention to provide a lever continuous fixing device and a fixing method that can be easily performed without requiring a load on the operator and without burdening the operator.

In order to solve the above problems, the present invention employs the following means.
That is, the present invention is an insulator continuous fixing device that fixes an insulator series formed by connecting a plurality of insulators in series in an axially pulled state, and is provided along the insulator series. An axially extendable screw fastening body, and an operation member for extending and contracting the screw fastening body, wherein the screw fastening body includes a pair of fixed-side screws whose one ends are connected to the levers at both ends of the lever series, Both ends are screwed to the other ends of the pair of fixed side screws, and the movable side screws are rotatable around the axis of the pair of fixed side screws, and the operating member is provided on the movable side screws. It is characterized by being.

  According to the lever continuous fixing device of the present invention, the relative screwing length of the movable side screw to the pair of fixed side screws of the screw fastening body is changed by rotating the movable side screw of the screw fastening body by the operation member. The total length of the screw fastening body can be expanded and contracted. Therefore, by rotating the movable side screw in the direction in which the screw fastening body is extended by the operating member, the lever series is pulled in the axial direction via the levers at both ends according to the extension amount of the screw fastening body, and the lever series is loosened. It will be fixed to the state that lost.

  Moreover, in this invention, it is good also as a pair of the said screw fastening body being provided in the both sides of the said lever series in the state which pinched | interposed the said lever series.

  According to the lever series fixing device of the present invention, by extending the pair of screw fastening bodies, the lever series is pulled in the axial direction via the levers at both ends according to the extension amount of the pair of screw fastening bodies. Will be fixed in a state where the slack is eliminated.

  Furthermore, the present invention is a fixing method for fixing an insulator series formed by connecting a plurality of insulators in series in a state of being pulled in the axial direction, wherein a screw fastening body is provided along the insulator series, and the screw fastening body One end of the pair of fixed side screws is connected to the levers at both ends of the lever series, and the movable side screw of the screw fastening body, the both ends of which are screwed to the other end of the pair of fixed side screws, is connected to the fixed side screw. By rotating around the axis and extending the screw fastening body, the lever series is fixed in a state of being pulled in the axial direction.

  According to the fixing method of the present invention, one end of the pair of fixed-side screws of the screw fastening body is fixed to the insulators at both ends of the lever series, and the movable side screw of the screw fastening body is rotated in the direction in which the screw fastening body extends. Thus, the lever series is pulled in the axial direction via the levers at both ends in accordance with the extension amount of the screw fastening body, and the lever series is fixed in a state in which the loosening is eliminated.

As described above, according to the lever continuous fixing device and the fixing method of the present invention, by rotating the movable side screw of the screw fastening body and extending the screw fastening body, according to the extension amount of the screw fastening body. The insulator series is pulled in the axial direction through the insulators at both ends, and the insulator series is fixed in a state where slack is eliminated.
Therefore, in the wire work such as electric wire repair, when the insulator is supported by the worker manually and applied to the connected state with the overhead wire fittings such as the clamp, or when the connection state is restored, the state where the slack of the insulator is eliminated Because it is possible to perform these operations, it is possible to easily release or connect the connection state between the lever series and the overhead wire fitting such as a clamp without requiring any skill and without burdening the operator. The work for returning the state can be performed, and the efficiency of the overhead line work can be greatly increased.

It is the top view which showed one Embodiment of the insulator continuous fixing device by this invention. It is the top view of one screw fastening body of the insulator continuous fixing device of FIG. 1, and the side view of an attaching part. It is the top view of the other screw fastening body of the insulator continuous fixing device of FIG. 1, and the side view of an attaching part. It is the top view which showed other embodiment of the insulator continuous fixing device by this invention.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
1 to 3 show an embodiment of an insulator continuous fixing device according to the present invention. The insulator series fixing device 1 of the present embodiment is effective for fixing the insulator series 25 that supports the electric wire in a state insulated from the utility pole in the overhead wire work such as electric wire repair, and the insulator series 25 is fixed. Thus, it is used for the operation of releasing the connection state between the lever series 25 and the overhead wire fitting such as a clamp or returning the connection state.

  As shown in FIG. 1, the insulator series 25 is configured by connecting a plurality of umbrella-shaped insulators 26 in series via connecting metal fittings 27 and 28. The strip-shaped first arc horn mounting bracket 30 is mounted so as to be orthogonal to the axis of the lever series 25, and the strip-shaped second arc horn mounting bracket 31 is mounted on the bottom of the lever 26 at the other end. It is attached so as to be orthogonal to 25 axes.

  A rod-shaped first arc horn 32 bent into a predetermined shape is attached to the end of the first arc horn mounting bracket 30, and the end of the second arc horn mounting bracket 31 is bent into a predetermined shape. A rod-shaped second arc horn 33 is attached, a first clamp 34 is attached to the center portion of the first arc horn attachment fitting 30, and a second clamp 35 is attached to the center portion of the second arc horn attachment fitting 31. Is attached.

  The insulator series 25 is interposed between the power pole and the electric wire by connecting the first clamp 34 on one end side to the electric pole side and connecting the second clamp 35 on the other end side to the electric wire side. Is transmitted to the power pole side through the second clamp 35, the second arc horn mounting bracket 31, each lever 26 of the lever series 25, the first arc horn mounting bracket 30, and the first clamp 34, thereby the load from the power pole. Has come to support.

  The insulator series fixing device 1 of the present embodiment used for fixing the insulator series 25 having the above-described configuration extends and contracts a pair of screw fastening bodies 2 and 2 that can extend and contract in the axial direction, and each screw fastening body 2. The operation member 20 is provided, and both ends of the screw fastening bodies 2 and 2 in the axial direction are connected to both ends of the lever connection 25 in the axial direction in a state where the lever series 25 is sandwiched between the pair of screw fastening body stages 2 and 2. By doing so, the insulator series 25 is fixed.

  Each screw fastening body 2 has a pair of fixed-side screws 3 and 3 whose one ends are respectively connected to the first arc horn mounting bracket 30 and the second arc horn mounting bracket 31 and between the other ends of the both fixed-side screws 3 and 3. And both ends of the fixed side screws 3 and 3 are screwed to the other end of the fixed side screws 3 and 3, and the movable side screw 15 is rotatable around the axis of the fixed side screws 3 and 3.

  Each fixed-side screw 3 includes a rod-shaped screw body 4 having a male screw 5 provided on the outer peripheral surface, and a mounting portion 6 provided integrally at one end of the screw body 4 in the axial direction. The first arc horn mounting bracket 30 and the second arc horn mounting bracket 31 are respectively attached to the end portion and the second arc horn mounting bracket 31.

  The attachment portion 6 includes a band type composed of a pair of U-shaped bands 7 and 7 and a connecting screw 9 for connecting the flanges 8 and 8 of both U-shaped bands 7 and 7, a U-shaped clevis 10, There is a clevis type consisting of a connecting pin 11 penetrating the letter-shaped clevis 10. In this embodiment, the fixed side screw 3 of the screw fastening body 2 on the side of the first arc horn 32 and the second arc horn 33 is used. A band type is used, and a clevis type is used for the fixed side screw 3 of the screw fastening body 2 on the opposite side.

  In the band-type mounting portion 6, one U-shaped band 7 is integrally connected to one end of the screw body 4 in the axial direction by welding or the like, and the other U-shaped band 7 is connected to the one U-shaped band 7 with a connecting screw 9. It is connected so that attachment or detachment is possible.

  In the clevis-type mounting portion 6, the base portion of the U-shaped clevis 10 is integrally connected to one end in the axial direction of the screw body 4 by welding or the like, and the connecting pin 11 is detachably penetrated through the distal end portion of the U-shaped clevis 10. It is like that.

  The movable-side screw 15 includes a rod-like operation portion 16 and a pair of cylindrical screw bodies 17 and 17 that are integrally provided with axial lines coincident with both axial ends of the operation portion 16. 17 is provided with a female screw 18 that can be screwed together with the male screw 5 of the screw body 4 of each fixed side screw 3.

  The movable side screw 15 has one screw body 17 formed as a left-handed female screw 18 and the other screw body 17 formed as a right-handed female screw 18, and the direction of the female screws 18, 18 of the screw bodies 17, 17. The screw bodies 4 and 4 of the fixed side screws 3 and 3 are formed on the left or right male screws 5 and 5 so as to be in the same direction.

  The operation member 20 is a ratchet wrench, and includes a gear 21 provided on the outer peripheral surface of the central portion of the operation portion 16 of the movable side screw 15, and a handle 23 having a locking claw 22 that can mesh with the gear 21. By operating the handle 23 and rotating the operating portion 16 integrally with the gear 21 via the locking claw 22, the pair of screw bodies 17, 17 can be rotated integrally with the operating portion 16.

  Note that the operation member 20 is not limited to the ratchet wrench, and any member that can rotate the movable side screw 15 may be used. For example, the outer peripheral surface of the operation unit 16 is formed in a quadrangular cross section and formed in this quadrangular shape. For example, a wrench may be hung on the outer peripheral surface of the operation unit 16 and the movable side screw 15 may be rotated by operating the wrench.

  In order to fix the insulator series 25 by the insulator series fixing device 1 according to this embodiment configured as described above, first, one screw fastening body stage 2 is connected to the first arc horn 32 and the second arc horn of the insulator series 25. The first arc horn 32 and the root of the second arc horn 33 are sandwiched between the pair of U-shaped bands 7 and 7 of the attachment portions 6 at both ends, arranged on the side of the insulator 33 and along the axial direction of the insulator series 25. By connecting the flanges 8 and 8 of the U-shaped bands 7 and 7 with a connecting screw 9, both ends of one screw fastening body 2 are connected to the end of the first arc horn mounting bracket 30 at one end of the insulator series 25, and The other end of the second arc horn mounting bracket 31 is connected to the other end.

  Next, the other screw fastening body 2 is arranged on the side opposite to the one screw fastening body 2 and is along the axial direction of the lever series 25, and is inserted into the grooves 11 of the pair of U-shaped clevises 10 of the attachment portions 6 at both ends. By inserting the end of the first arc horn mounting bracket 30 and the end of the second arc horn mounting bracket 31 and passing the connecting pin 12 through the U-shaped clevis 10, both ends of the other screw fastening body 2 are connected to the insulator. 25 is connected to the end of the first arc horn mounting bracket 30 at one end and the end of the second arc horn mounting bracket 31 at the other end.

  Next, the handle 23 of each operation member 20 is operated to rotate the movable side screw of each screw fastening body 2 in the direction in which each screw fastening body 2 is extended, so that the female screws of both screw bodies 17 and 17 of the movable side screw are provided. The total length of each screw fastening body is extended by changing the screwing length of the male screw of both screw bodies of the both fixed side screws 18 and 18. As a result, the lever series is pulled in the axial direction by the two screw fastening bodies 2, so that there is no slack between the adjacent levers of the lever series, and the lever series is fixed linearly.

  Then, in a state where the insulator series 25 is fixed by the insulator series fixing device 1 of the present embodiment as described above, the insulator series 25 is connected to the overhead wire fitting such as a clamp while supporting the insulator series 25 together with the insulator series fixing device 1. The state is released and work such as electric wire repair is performed. After the work is completed, the lever series 25 is again connected to the overhead wire fitting, and after the state is changed to the connected state, the lever series fixing device 1 is removed from the lever series 25. Can be interposed between the utility pole and the electric wire.

  In the insulator continuous fixing device 1 according to the present embodiment configured as described above, it includes a pair of screw fastening bodies 1 and 2 and an operation member 20 that rotates the movable side screw 15 of each screw fastening body 2. Since it is small and lightweight, the worker places a burden on the operator to release the connected state of the lever series 25 and the overhead wire fitting and to return the connected state while the worker supports the overhead wire ladder together with the insulator series 25. And can be performed efficiently.

  Further, since it is not necessary to secure the lion string 25 with a rope or the like, it does not require skill, and even an inexperienced worker can support the lion string 25 and the overhead wire fitting while supporting the insulator string 25. The connection state can be released and the connection state can be restored.

  FIG. 4 shows another embodiment of the insulator series fixing device 1 according to the present invention. In the insulator continuous fixing device 1 according to the present embodiment, the mounting portion 6 of the pair of fixed side screws 3 and 4 of the screw fastening body 2 is configured by a U-shaped clevis 10 and a connecting pin 12 for both the screw fastening bodies 2 and 2. The other configurations are the same as those shown in the embodiment.

  In this case, the U-shaped clevises 10 of the U-shaped clevises 10 and 10 of the two mounting parts 6 and 6 of one screw fastening body 2 and the U-shaped clevises 10 and 10 of the both mounting parts 6 and 6 of the other screw fastening body 2 10, both ends of the first arc horn mounting bracket 30 and both ends of the second arc horn mounting bracket 31 are inserted into the grooves 11 and 11, respectively, and both ends of the first arc horn mounting bracket 30 and the second arc horn mounting. Since both ends of the metal fitting 31 and each U-shaped clevis 10 are connected by the connecting pin 12, the first arc horn 32 and the second arc horn 33 are attached to the first arc horn mounting metal 30 and the second arc horn. It will be attached closer to the center of the metal fitting 31.

  And even if it exists in the insulator continuous fixing device 1 of this Embodiment, there exists an effect similar to what is shown in the said embodiment.

  In the above description, the case where the lever series fixing device 1 according to the present invention is used for releasing the connected state between the lever series 25 and the overhead wire fitting and returning the connected state has been described. You may use the insulator continuous fixing device 1 of invention.

  In the above description, the male screw 5 is provided in the screw main body 4 of the fixed side screw 3 of the screw fastening body 2 and the female screw 18 is provided in the screw main body 17 of the movable side screw 15. 4 may be provided with a female screw, and the screw main body 17 of the movable side screw 15 may be provided with a male screw.

  Further, in the above description, the pair of screw fastening bodies 2 and 2 are provided along the insulator series 25. However, depending on the size and number of the insulators 26 of the insulator series 25, the single screw fastener 2 may be used as the insulator. The ream 25 may be configured to be fixed.

DESCRIPTION OF SYMBOLS 1 Insulator continuous fixing device 2 Screw fastening body 3 Fixed side screw 4 Screw main body 5 Male screw 6 Mounting part 7 U-shaped band 8 Flange 9 Connection screw 10 U-shaped clevis 11 Groove 12 Connection pin 15 Movable side screw 16 Operation part 17 Screw body 18 Female screw 20 Operating member 21 Gear 22 Locking claw 23 Handle 25 Insulator link 26 Insulator 27 Connecting bracket 28 Connecting bracket 30 First arc horn mounting bracket 31 Second arc horn mounting bracket 32 First arc horn 33 Second arc horn 34 First Clamp 35 Second clamp

Claims (3)

An insulator series fixing device for fixing an insulator series formed by connecting a plurality of insulators in a stretched state in an axial direction,
A screw fastening body that is provided along the lever series and that can be expanded and contracted in the axial direction of the lever series, and an operation member that extends and contracts the screw fastening body,
The screw fastening body includes a pair of fixed-side screws whose one ends are connected to insulators at both ends of the lever series, and both ends screwed to the other ends of the pair of fixed-side screws, and the pair of fixed-side screws. And a movable side screw that is rotatable around the axis thereof, wherein the operating member is provided on the movable side screw.   2. The insulator chain fixing device according to claim 1, wherein a pair of the screw fastening bodies are provided on both sides of the insulator string with the insulator string sandwiched therebetween. A fixing method for fixing an insulator chain formed by connecting a plurality of insulators in series to a state in which the insulator is pulled in an axial direction,
A screw fastening body is provided along the lever series, one end of a pair of fixed-side screws of the screw fastening body is connected to a lever at both ends of the lever series, and both ends are screwed to the other end of the pair of fixed-side screws. The movable side screw of the screw fastening body is rotated about the axis of the fixed side screw, and the screw fastening body is extended to fix the lever chain in a state of being pulled in the axial direction. Fixing method.

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