JP2014193068A - Insulator string shape holder, mounting method of tension insulator using the same, and handling method of tension insulator - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve workability in newly providing or maintaining a tension insulator that is an insulator string, by preventing a length dimension of the tension insulator from being reduced even in the case where tension applied to both ends of the tension insulator is removed.SOLUTION: An insulator string shape holder is prepared which comprises a shape holding part for holding a shape in the case where a tension insulator 11 (insulator string) formed by connecting a plurality of solid earthenware rods 11a, is fitted to a housing 101 accommodating the tension insulator 11 and tension is applied to both ends of the tension insulator. The shape is held by fitting the tension insulator 11 to the shape holding part (shape holding step), a power transmission line 3 which is supported by a steel tower via the tension insulator 11 is tensed by a wire rope 202 and made closer to the steel tower (attraction step), the steel tower and the power transmission line 3 are connected by the shape-held tension insulator 11 (connection step), the insulator string shape holder is removed from the tension insulator 11 (shape hold cancellation step), and a device tensing the power transmission line 3 with the wire rope 202 is removed (restitution step).

Description

  TECHNICAL FIELD The present invention relates to an insulator-retaining shape holder for maintaining the shape of an insulator ream, and a method for mounting a tension-resistant insulator and a method for handling a tension-resistant insulator using the same.

  As an instrument for supporting a transmission line (electric wire) on a steel tower (support), a tension insulator, which is an insulator series in which a plurality of solid ceramic rods are connected, is widely used. The tension insulator is connected to the steel tower at one end via a support fitting, and the other end connection is connected to a clamp that clamps and fixes the power transmission line via the support fitting (see FIG. 1, FIG. 2, FIG. 10 (a), (b) reference).

  For example, Patent Document 1 describes support of a power transmission line using a tension insulator (see paragraph 0002 and FIG. 11).

JP 2001-155568 A

  When exchanging all or part of the ceramic rods of the tension insulators that form the insulator series, call the transmission line supported by the tension insulators to the side of the steel tower, and remove the tension on the tension insulators. There is a need.

  In this state, the tension insulator is removed, and all or a part of the ceramic rods are replaced. However, when the tension at both ends is removed, the tension insulator is loosened into an arcuate shape with the middle hanging down (FIG. 10 ( b)). Therefore, the length dimension between the ends of the tension insulator connected to the support bracket is the original length of the tension insulator, that is, the length when the tension is applied between the tower and the transmission line. Shorter than For this reason, it becomes difficult to remove or attach the tension insulators in the state of being bent into an arcuate shape. Therefore, conventionally, when the tension insulator is removed or attached, it is necessary to devise a technique for hanging the tension insulator as a work target on the power transmission line and maintaining the length in the original posture.

  However, the tension insulator is heavy so that one pot is about 5kg. For this reason, it is not easy to hang the tension insulator on the transmission line. Therefore, there is a problem that workability is poor.

  The present invention has been made in view of the above points, and even when the tension applied to both ends of the tension insulator, which is an insulator series, is removed, the length of the tension insulator is not shortened. The purpose is to improve workability in new installation and maintenance.

  The insulator continuous form holder of the present invention has a housing in which a plurality of solid ceramic rods connected to each other are accommodated, leaving the connecting portions at both ends, and the both ends are fitted with tension. The above-described problem has been solved by including a shape holding portion provided in the housing that holds the shape in the shape of the time.

  The tension insulator mounting method according to the present invention includes a housing for storing a plurality of tension insulators, each having a solid ceramic rod connected thereto, with the connecting portions at both ends being accommodated, and the tension insulators are fitted to each other so that tension is applied to both ends. A shape holding portion provided in the housing that holds the shape as it is when hung, and using a lever continuous shape holding tool to fit the tension insulator to the shape holding portion to maintain the shape A shape holding step, a calling step of pulling an electric wire to be supported on the support via the tension insulator with a string-like member and bringing the electric wire close to the support, and the support and the electric wire with the tension insulator being held in shape. And a current state returning step of removing a device for pulling the electric wire with the string-like member, and a connecting step for connecting the wire, a form holding releasing step for removing the lever continuous form holding tool from the tension insulator, and It solved the problem.

  The method for handling a tension insulator according to the present invention includes a housing that houses a plurality of tension insulators connected to a solid ceramic bar, leaving connection portions at both ends, and the tension insulators are fitted to each other so that tension is applied to both ends. The form retainer provided in the housing that retains the form as it is hung, and a form-supporting form retainer provided in the housing, and the tension insulator in use supporting the electric wire is in the form A first form holding step for fitting the holding part to hold the form, and pulling the electric wire supported by the tension insulator in use with a string member to remove the tension from the tension insulator in use. The above-described problems have been solved by providing a tension removing step and a removing step of removing the tension insulator in use, which has been held in shape by the lever continuous form holder, from the support and the electric wire.

  According to the present invention, the shape holding part holds the insulator string (tension resistant insulator) in the shape when the tension is applied to both ends, so when the tension applied to both ends of the tension insulator is removed. In addition, it is possible to prevent the occurrence of inconvenience that the length of the tension insulator is shortened. Therefore, the workability at the time of newly installing or maintaining the tension insulator can be improved. In addition, the tension insulator can be protected during transportation.

The front view which shows the state in which the tension insulator attached to the steel tower is supporting the power transmission line. The front view which shows the tension insulators interposed between the steel tower and the power transmission line. The top view of the insulator continuous form holder which shows 1st and 2nd embodiment. The front view of the state which a pair of half housing which shows 2nd Embodiment has faced. The side view of the insulator continuous form holder of 2nd Embodiment. The front view of the state which a pair of half housing which shows 3rd Embodiment is facing. The side view of the insulator continuous form holder of 3rd Embodiment. The front view of the state which a pair of half housing which shows 4th Embodiment is facing. The side view of the insulator continuous form holder of 4th Embodiment. It is a figure which shows 5th-6th embodiment, (a) is for demonstrating the mounting method of the tension insulator performed using the insulator continuous form holder of this Embodiment, and the handling method of a tension insulator. (B) is a front view which shows the state at the time of mounting | wearing and handling a tension insulator without using the insulator continuous form holder of this Embodiment.

  First, the usage state of the tension insulator 11 will be described with reference to FIGS. 1 and 2. One end of two tension insulators 11 is attached to the arm 2 of the steel tower 1, and each tension insulator 11 supports the transmission line 3 on the other end side. The tension insulator 11 shown in FIGS. 1 and 2 is an insulator series in which a plurality of solid ceramic rods 11a are connected. One end of such a tension insulator 11 is attached to the side of the steel tower 1 as a support via a support fitting 32 having an arcing horn 31, and the other end side is a clamp 34 that clamps and fixes the power transmission line 3. Is attached via a support fitting 33 having an arcing horn 31. In this way, the tension insulator 11 is interposed between the steel tower 1 and the power transmission line 3 and supports the power transmission line 3 in a state where the tension due to the weight of the power transmission line 3 is applied. The two power transmission lines 3 are connected via a jumper line 4 clamped and fixed to a clamp 34.

  Next, an embodiment will be described. Here, the embodiment of the lever continuous form holder, the embodiment of the method of attaching the tension insulator, and the embodiment of the method of handling the tension insulator will be introduced separately. The first to fourth embodiments are embodiments of a lever continuous form holder, the fifth embodiment is an embodiment of a tension insulator mounting method, and the sixth embodiment is the handling of a tension insulator. 1 is an embodiment of a method.

<< First Embodiment >>
A first embodiment will be described with reference to FIG.

  As shown in FIG. 3, the lever continuous form holder according to the present embodiment is provided with a form holding portion 102 in a housing 101 that houses a tension-resistant lever 11 that is a lever series, leaving connection portions at both ends. . The shape holding portion 102 has a fitting hole 103 into which the tension insulator 11 is fitted. The fitting hole 103 has the same shape as that of the tension insulator 11 mounted between the steel tower 1 and the power transmission line 3 that is an electric wire. Accordingly, the tension insulator 11 fitted in the fitting hole 103 is maintained in the shape as it is attached. In the present embodiment, the depth of the fitting hole 103 is formed so that the tension insulator 11 can be fitted completely.

  In such a configuration, when the tension insulator 11 is newly installed or maintained, when the tension insulator 11 is fitted to the holding portion 102, the tension insulator 11 remains in the shape when tension is applied to both ends. It can hold | maintain (refer Fig.10 (a)). Thereby, when the tension applied to both ends of the tension insulator 11 is removed, the conventional inconvenience (see FIG. 10B) in which the length of the tension insulator 11 is bent to shorten the length can be surely prevented. . Therefore, the workability at the time of newly installing or maintaining the tension insulator 11 can be improved. Moreover, by accommodating the tension insulator 11 in the housing 101, the tension insulator 11 can be protected during transportation.

<< Second Embodiment >>
A second embodiment will be described with reference to FIGS. The same parts as those of the first embodiment are denoted by the same reference numerals, and description thereof is also omitted.

  In this embodiment, the housing 101 is formed by joining a pair of half-cylindrical housings 101a. Both of the pair of half housings 101a are provided with a form holding portion 102 for fitting the tension insulator 11 only in the radius region of the ceramic rod 11a. Therefore, if these half housings 101a are joined and fixed, the tension insulators 11 can be stored and held in a sealed state with the shape held.

  As shown in FIG. 5, in order to fix the pair of half housings 101a in a joined state, the periphery of the joined pair of half housings 101a may be secured by a binding band 111 as a binding member.

  According to the present embodiment, it is possible to further strengthen the shape retention of the tension insulator 11 that remains in the shape when tension is applied to both ends. Therefore, it becomes easier to handle the work more easily. In addition, since the tension insulator 11 can be hermetically sealed in the housing 101 while leaving the connecting portions at both ends, the protection of the tension insulator 11 during transportation can be further enhanced.

<< Third Embodiment >>
A third embodiment will be described with reference to FIGS. The same parts as those of the second embodiment are denoted by the same reference numerals, and description thereof is also omitted.

  In the present embodiment, a band thread 104 is provided on the outer surface of the housing 101 as a binding member thread for passing a binding band 111 that secures and secures the periphery of the pair of bonded half housings 101a. Two band loops 104 are arranged at the lower part of one half housing 101a positioned below and two at the upper part of the other half housing 101a positioned above. These band throughs 104 form through holes 105 through which the binding band 111 passes.

  Therefore, as shown in FIG. 7, the binding band 111 that secures and secures the periphery of the pair of halved housings 101 a can be passed through the through hole 105 of the band passage 104, thereby preventing the binding band 111 from being displaced or dropped off. can do.

<< Fourth Embodiment >>
A fourth embodiment will be described with reference to FIGS. The same parts as those of the third embodiment are denoted by the same reference numerals, and description thereof is also omitted.

  In the present embodiment, the band-through 104 is also arranged on both sides of the housing 101. Accordingly, four banding 104 are arranged at the bottom of one half housing 101a positioned below and four at the top of the other half housing 101a positioned above.

  As shown in FIG. 9, the binding band 111 that secures the periphery of the pair of half housings 101 a that are joined by passing through the band throughs 104 disposed on both sides of the housing 101 is positioned above the housing 101. The hook 121 is attached. In this way, when the tension insulator 11 is newly installed or maintained, the hook 121 is hooked on the wire rope 202 as a string-like member used to call the power transmission line 3 to the tower 1 side, and the tension insulator 11 is attached to the wire rope 202. Can be supported.

<< Fifth Embodiment >>
A fifth embodiment will be described with reference to FIGS. 10 (a) and 10 (b). The same parts as those in the first to fourth embodiments are denoted by the same reference numerals, and description thereof is also omitted.

  The present embodiment is a method of mounting the tension insulator 11 using the above-mentioned insulator continuous form holder. FIG. 10A shows an example using the lever continuous form holder of the fourth embodiment. However, the embodiment is not limited to this, and the lever continuous form holding of the first to third embodiments is performed. Tools may be used. The method of the present embodiment is executed by the following steps.

(1) Form holding step Using a lever continuous form holder, the tension insulator 11 is fitted into the fitting hole 103 of the form holding portion 102 to hold the form. More specifically, the following (sub-process 1) to (sub-process 3) are performed.

(Sub-process 1) Storage process The tension insulator 11 which is joined to the pair of shape holding portions 102 by joining the pair of half housings 101a and held in the housing 101 is housed in the housing 101 (FIGS. 4-5 and 6-6). (Refer FIG. 7, FIG. 8-9).

(Sub-process 2) Stopping process The binding band 111 is passed through the through hole 105 of the band threading 104, and the periphery of the pair of half housings 101a joined together is secured by the binding band 111 (see FIGS. 7 and 9).

(Sub process 3) Hook mounting process The hook 121 is attached to the binding band 111 that is passed through the through hole 105 of the band thread 104 arranged on both sides of the housing 101 (see FIG. 9).

(2) Calling process The power transmission line 3 supported by the steel tower 1 through the tension insulator 11 is brought close to the pulling steel tower 1 with a wire rope 202 as a string-like member. A fixing tool 201 is fixed to the power transmission line 3, and a wire rope 202 connected to the fixing tool 201 is guided to a power machine (not shown) such as a winch by a gold wheel 203, and a pulling force of the winch is applied to transmit the wire rope 202. The electric wire 3 can be brought close to the steel tower 1.

(3) Connection process The steel tower 1 and the power transmission line 3 are connected with the tension insulator 11 that has been held in shape using the insulator continuous form holder. In other words, the connecting portion on one end side of the tension insulator 11 is connected to the support fitting 32 attached to the arm 2 of the tower 1, and another end of the tension insulator 11 is attached to the support fitting 33 attached to the clamp 34 for clamping the transmission line 3. Connect the side connection. At this time, the next sub-step 1 is executed in advance.

(Sub process 1) Support process The tension rope 11 accommodated in the housing 101 is supported by the wire rope 202 by hooking the hook 121 attached to the binding band 111 to the wire rope 202 that pulls the power transmission line 3.

  In the connecting step, the tension insulator 11 is held in shape by using the insulator continuous form holder, so that the shape of the tension insulator 11 can be maintained as it is when tension is applied to both ends (see FIG. 10 (a)). Thereby, when the tension applied to both ends of the tension insulator 11 is removed, the conventional inconvenience (see FIG. 10B) in which the length of the tension insulator 11 is bent to shorten the length can be surely prevented. . Therefore, workability in the connection process can be improved. Moreover, workability | operativity can be made still better by implementation of the sub process 1 (attachment of the hook 121) in a connection process.

(4) Form holding release step The lever continuous form holding tool is removed from the tension insulator 11.

(5) Current status returning step A device that pulls the power transmission line 3 with the wire rope 202, that is, a power machine (not shown) such as a winch, the fixture 201, the wire rope 202, and the gold wheel 203 is removed.

  In each of the above steps, the tension insulator 11 may be handled as an insulator device assembled by attaching an overhead wire fitting including the arcing horn 31 to the tension insulator 11.

<< Sixth Embodiment >>
A sixth embodiment will be described with reference to FIGS. 10 (a) and 10 (b). The same parts as those in the first to fourth embodiments are denoted by the same reference numerals, and description thereof is also omitted.

  The present embodiment is a method of handling the tension insulator 11 using the above-mentioned insulator continuous form holder. FIG. 10A shows an example using the lever continuous form holder of the fourth embodiment. However, the embodiment is not limited to this, and the lever continuous form holding of the first to third embodiments is performed. Tools may be used. The method of the present embodiment is executed by the following steps.

(1) 1st form holding process The tension | pulling tension insulator 11 in use is fitted to the fitting hole 103 of the form holding part 102, and a form is hold | maintained using the insulator continuous form holder. More specifically, the following (Sub-step 1) and (Sub-step 2) are executed.

(Sub-process 1) Storage process The tension insulator 11 which is joined to the pair of shape holding portions 102 by joining the pair of half housings 101a and held in the housing 101 is housed in the housing 101 (FIGS. 4-5 and 6-6). (Refer FIG. 7, FIG. 8-9).

(Sub-process 2) Stopping process The binding band 111 is passed through the through hole 105 of the band threading 104, and the periphery of the pair of half housings 101a joined together is secured by the binding band 111 (see FIGS. 7 and 9).

(2) Tension removing step The transmission line 3 supported by the tension insulator 11 in use is pulled in the direction of the steel tower 1 with a wire rope 202 as a string-like member, and the tension is removed from the tension insulator 11 in use. . A fixing tool 201 is fixed to the power transmission line 3, and a wire rope 202 connected to the fixing tool 201 is guided to a power machine (not shown) such as a winch by a gold wheel 203, and a pulling force of the winch is applied to transmit the wire rope 202. The electric wire 3 can be pulled in the direction of the steel tower 1.

(3) Detachment process The tension insulator 11 in use, which is held in the form with the insulator continuous form holder, is removed from the tower 1 and the power transmission line 3. That is, the connecting portion on one end side of the tension insulator 11 is removed from the support fitting 32 attached to the arm 2 of the tower 1, and another end side of the tension insulator 11 is attached to the support fitting 33 attached to the clamp 34 for clamping the power transmission line 3. Remove the connection.

  In the detaching process, the tension insulator 11 is held in shape by using the insulator continuous form holder, so that the shape of the tension insulator 11 can be maintained as it is when tension is applied to both ends (see FIG. 10 (a)). Thereby, when the tension applied to both ends of the tension insulator 11 is removed, the conventional inconvenience (see FIG. 10B) in which the length of the tension insulator 11 is bent to shorten the length can be surely prevented. . Therefore, workability in the removal process can be improved.

(4) 2nd form holding process A new tension insulator 11 is fitted to the fitting hole 103 of the form holding part 102, and a form is hold | maintained using an insulator continuous form holder. The term “new tension insulator 11” as used herein means a tension insulator 11 in which a ceramic bar 11a of a part of the removed tension insulator 11 is replaced in addition to a completely new tension insulator 11. Yes. In the second form holding step, the following (sub-step 1) to (sub-step 4) are executed.

(Sub-process 1) Storage process The tension insulator 11 which is joined to the pair of shape holding portions 102 by joining the pair of half housings 101a and held in the housing 101 is housed in the housing 101 (FIGS. 4-5 and 6-6). (Refer FIG. 7, FIG. 8-9).

(Sub-process 2) Stopping process The binding band 111 is passed through the through hole 105 of the band threading 104, and the periphery of the pair of half housings 101a joined together is secured by the binding band 111 (see FIGS. 7 and 9).

(Sub process 3) Hook mounting process The hook 121 is attached to the binding band 111 that is passed through the through hole 105 of the band thread 104 arranged on both sides of the housing 101 (see FIG. 9).

(Sub process 4) Support process The tension insulator 11 housed in the housing 101 is supported by the wire rope 202 by hooking the hook 121 attached to the binding band 111 to the wire rope 202 that pulls the power transmission line 3.

(5) Connection process The tower 1 and the power transmission line 3 are connected with the tension insulator 11 that has been retained in the form using the insulator continuous form holder. In other words, the connecting portion on one end side of the tension insulator 11 is connected to the support fitting 32 attached to the arm 2 of the tower 1, and another end of the tension insulator 11 is attached to the support fitting 33 attached to the clamp 34 for clamping the transmission line 3. Connect the side connection.

  In the connecting step, the tension insulator 11 is held in shape by using the insulator continuous form holder, so that the shape of the tension insulator 11 can be maintained as it is when tension is applied to both ends (see FIG. 10 (a)). Thereby, when the tension applied to both ends of the tension insulator 11 is removed, the conventional inconvenience (see FIG. 10B) in which the length of the tension insulator 11 is bent to shorten the length can be surely prevented. . Therefore, workability in the connection process can be improved. Moreover, workability | operativity can be made still better by implementation of the sub process 4 in the 2nd form holding process (attachment of the hook 121).

(6) Form holding release process The lever continuous form holding tool is removed from the tension insulator 11.

(7) Current status returning process The device for pulling the power transmission line 3 with the wire rope 202, that is, a power machine (not shown) such as a winch, the fixture 201, the wire rope 202, and the gold wheel 203 is removed.

  In each of the above steps, the tension insulator 11 may be handled as an insulator device assembled by attaching an overhead wire fitting including the arcing horn 31 to the tension insulator 11.

≪Modification≫
The present invention is not limited to the above-described embodiment, and various modifications and changes are allowed. For example, in order to prevent the tension insulator 11 from being damaged, the shape holding portion 102 may be provided with a protective sheet on a portion that contacts the tension insulator 11. As a material for the protective sheet, for example, rubber or felt can be used.

  The tension insulator 11 to which the present invention is applied is not limited to connecting the steel tower 1 and the power transmission line 3, but is also a insulator for a DC double-track electric railway line in a railway or a tram line in a tram. These insulators may be interposed and connected to these supports.

1 Support (steel tower)
11 Tensile tension insulator (lion lion)
11a Pottery bar 101 Housing 101a Half housing 102 Form holding part 104 Banding (through binding member)
111 Cable tie (bonding member)

Claims (11)

A housing that stores a plurality of solid ceramic rods that are connected to each other, leaving the connecting portions at both ends;
A shape holding portion provided in the housing that holds the shape as it is when the tension is applied to both ends by fitting the lever series, and
An insulator continuous form holder characterized by comprising.   A pair of half housings provided with the form holding part for fitting the insulator series only in a radius region of the pottery bar are provided, and the form of the insulator series is held by joining these half housings. Item 2. The insulator continuous form holder according to Item 1.   The lever continuous form holder according to claim 2, further comprising: a binding member passage for passing a binding member that secures and holds the periphery of the pair of the half housings joined to each other on an outer surface of the housing.   4. The lever continuous form holder according to claim 3, wherein the binding member passages are arranged on both side portions of the housing. A housing in which a plurality of solid earthenware rods connected to each other are accommodated, leaving the connecting portions at both ends, and the tension insulators are fitted together to hold the shape as it is when tension is applied to both ends. A form holding step for fitting and holding the shape of the tension insulator to the form holding part using a form continuous form holding tool provided with a form holding part provided in the housing;
A calling step of pulling an electric wire to be supported on the support through the tension insulator with a string-like member and bringing it close to the support,
A connecting step of connecting the support and the electric wire with the tension insulator that is held in a form;
A form holding release step of removing the lever continuous form holder from the tension insulator;
A current return step of removing a device for pulling the electric wire with the string-like member;
A method of mounting a tension insulator, comprising:   6. The tension insulator mounting method according to claim 5, wherein the tension insulator is handled as an insulator device assembled by attaching an overhead wire fitting including an arcing horn to the tension insulator. A housing in which a plurality of solid earthenware rods connected to each other are accommodated, leaving the connecting portions at both ends, and the tension insulators are fitted together to hold the shape as it is when tension is applied to both ends. And a shape holding part provided in the housing, and a shape holding part that is in use and supporting the electric wire is fitted into the form holding part to hold the form. 1 form holding step;
A tension removing step of pulling the electric wire supported by the tension insulator in use with a string-like member and removing the tension from the tension insulator in use;
A removal step of removing the tension insulators in use that have been retained in the shape-retained form retainer from the support and the wire,
A method of handling a tension insulator, comprising: A second form holding step of holding the form by fitting the new tension insulator to the form holding part;
A connecting step of connecting the support and the electric wire with the new tension insulator that is retained in form;
A form holding releasing step of removing the lever continuous form holding tool from the new tension insulator;
A current return step of removing a device for pulling the electric wire with the string-like member;
The handling method of the tension insulator of Claim 7 characterized by the above-mentioned. A housing for storing the tension insulators in the housing which are joined to a pair of the shape holding portions by joining a pair of half housings provided with the shape holding portions to be fitted only in the radius region of the pottery bar. Process,
A securing step of securing and stopping the periphery of the pair of half housings joined by a binding member passed through a binding member passage provided on the outer surface of the housing;
The handling method of the tension insulator according to claim 6 to 8, characterized by comprising: A hook mounting step of attaching a hook to the binding member passed through the binding member passage disposed on both sides of the housing;
A supporting step of supporting the tension insulators stored in the housing by hooking the hook attached to the binding member to the string-like member that pulls the electric wire;
The handling method of the tension insulator of Claim 9 characterized by the above-mentioned.   The handling of the tension insulator according to any one of claims 6 to 10, wherein the tension insulator is handled as an insulator device assembled by attaching an overhead wire fitting including an arcing horn to the tension insulator. Method.

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