JP5468669B1 - Protective device - Google Patents

Abstract

A lightning protection device is easily and reliably protected.
In a cover body 101 formed of a hard material capable of maintaining its shape, having a cylindrical shape with a space for accommodating a lightning arrester 400 inside, and having a break that can be opened and closed over the entire axial direction of the cylinder. The lightning protection device 100 is configured to accommodate the lightning arrester 400 and the both ends of the cover body 101 in a state in which the lightning protection device 400 is accommodated to the lightning protection device 400. Thereby, a lightning arrester can be protected easily and reliably.
[Selection] Figure 6

Description

  The present invention relates to a protection device that protects a lightning arrester.

  When a work (power failure work) is performed on a power transmission tower that supports a power transmission line, a tool used for the work is carried on the power transmission tower using a rope or a wire such as a tow rope. For example, on the ground, a tool is attached to the tip of a rope or wire such as a tow rope, and the operator on the power tower pulls up the rope or wire to which the tool is attached, so that the tool is placed on the power tower. It is transported to.

  Conventionally, for example, when a painting work is performed on a power transmission tower, a technique for preventing paint from adhering to the insulator of the lightning arrester by attaching a cover to the insulator of the lightning arrester provided on the power transmission tower. (For example, see Patent Documents 1 and 2 below.)

JP 2010-86905 A JP 2012-16662 A

  However, in the conventional technique described in Patent Document 1 described above, since the insulator of the lightning arrester is covered by the paint cover main body formed by the deformable sheet-like member, it is easy to carry the tool on the power transmission tower. When a rope or wire such as a rope swings due to wind, there is a concern that the rope or wire such as a swinging rope may impact the lightning arrester through the paint cover body and damage the lightning arrester insulator. was there.

  In addition, the conventional technique described in Patent Document 2 described above introduces the insulator of the lightning arrester into the inside of the insulator protective cover through the slit that is expanded by pressing the slit portion of the insulator protective cover against the insulator of the lightning arrester. By covering the lion. For this reason, there existed a problem that there existed a concern that the insulator of a lightning arrester might be damaged by pressing with an insulator protective cover.

  SUMMARY OF THE INVENTION An object of the present invention is to provide a protection device that can easily and surely protect a lightning arrester in order to solve the above-described problems caused by the prior art.

  In order to solve the above-described problems and achieve the object, the protection device according to the present invention is provided with an arc horn at one end fixed to one end side of a lever series that is continuous in a substantially horizontal direction and the other end being a free end. A protective device for protecting a lightning arrester having a cantilever structure, which is formed of a hard material capable of maintaining its shape, has a cylindrical shape with a space for accommodating the lightning arrester inside, and covers the entire axial direction of the cylinder. A cover main body having a break that can be opened and closed, and one end of the cover main body provided at one end in the axial direction of the cover main body and in which the lightning arrester is housed in a space opened by opening the cut A first fixing portion for fixing the lightning arrester to the lightning arrester, and the insulator at the other end of the cover main body provided in the other end in the axial direction of the cover main body. Characterized by comprising a second fixing portion for fixing the position relative to.

  In the protection device according to the present invention, in the above invention, the second fixing portion is fitted to the lever sequence, and a support member that can expand and contract between the other end of the cover body and the lever sequence. The cover main body in a state in which the lightning arrester is accommodated by stretching the support member between the fitting member fitted in the lever series and the other end of the cover main body. The position of the other end with respect to the insulator series is fixed.

  Moreover, the protection device according to the present invention is characterized in that, in the above invention, the first fixing portion and the second fixing portion fix the cover body in a state where the cut is closed.

  Moreover, the protection device according to the present invention is characterized in that, in the above invention, the cover body has a substantially cylindrical shape.

  In the protection device according to the present invention, in the above invention, the cover main body can rotate relative to the first fixed portion and the second fixed portion about the axis of the cover main body. It is provided in.

  According to the protection device according to the present invention, there is an effect that the lightning arrester can be easily and reliably protected.

It is explanatory drawing (the 1) which shows the structure of the protection apparatus of Embodiment 1 concerning this invention. It is explanatory drawing (the 2) which shows the structure of the protection apparatus of Embodiment 1 concerning this invention. It is explanatory drawing which shows an example of a structure of a supporting member and a connection metal fitting. It is explanatory drawing (the 1) which shows the structure of a lightning arrester. It is explanatory drawing (the 2) which shows the structure of a lightning arrester. It is explanatory drawing which shows the lightning arrester of the state which attached the protective device. It is explanatory drawing (the 1) which shows the attachment procedure of the protective device to a lightning arrester. It is explanatory drawing (the 2) which shows the attachment procedure of the protective device to a lightning arrester. It is explanatory drawing (the 3) which shows the attachment procedure of the protective device to a lightning arrester. It is explanatory drawing (the 1) which shows the protection apparatus of Embodiment 2 concerning this invention. It is explanatory drawing (the 2) which shows the protection apparatus of Embodiment 2 concerning this invention.

  Exemplary embodiments of a protection device according to the present invention will be described below in detail with reference to the accompanying drawings.

(Embodiment 1)
First, the configuration of the protection device according to the first embodiment of the present invention will be described. 1 and 2 are explanatory diagrams showing the configuration of the protection device according to the first embodiment of the present invention. 1A and 2A show a first mode of the protection device according to the first embodiment of the present invention, and FIG. 1B and FIG. 2B show the protection device according to the first embodiment of the present invention. The 2nd aspect of is shown.

  1 and 2, the protection device 100 according to the first embodiment of the present invention includes a cover body 101. The cover body 101 is a tubular member having a hollow inside and has a substantially cylindrical shape. The cover body 101 is made of a hard material that can maintain its shape. Moreover, it is preferable that at least the surface of the cover main body 101 is insulated. Specifically, the cover main body 101 can be formed using, for example, vinyl chloride.

  An elastic member may be provided on the inner peripheral surface of the cover main body 101. Specifically, the elastic member can be realized by a sheet-like member formed of rubber, for example. The illustration of the elastic member is omitted. By providing an elastic member on the inner peripheral surface of the cover main body 101, it is possible to prevent the lightning arrester from being damaged when the cover main body 101 and the lightning arrester (see reference numeral 400 in FIG. 4) contact each other.

  The cover main body 101 includes two cover members 102 and 103 that can be divided along the length direction (a plane parallel to the axial direction). The two cover members 102 and 103 each have a shape like an eaves when the cover main body 101 is divided (in a half-divided state). The two cover members 102 and 103 are connected at one edge portion of the edge portions facing each other. One cover member 102 is provided so as to be swingable with respect to the other cover member 103 with the connecting portion 104 as a fulcrum.

  In the cover body 101, the other edge portion which is not connected is formed with a cut 105 extending over the entire axial direction of the cylinder formed by the cover body. The cut 105 can be opened and closed over the entire axial direction of the cylinder formed by the cover main body 101. By swinging one cover member 102 with respect to the other cover member 103 with the connecting portion 104 of the two cover members 102 and 103 as a fulcrum, the cut 105 is closed to form a cylindrical shape, or the cover body 101 The space 106 formed on the inside can be opened to the outside.

  The two cover members 102 and 103 include fixing protrusions 107 and 108 that are overlapped in a state of facing each other. The fixing protrusions 107 and 108 are provided at the end of the cover main body 101 in the length direction. In this embodiment, the end portion on the side where the fixing protrusions 107 and 108 are provided in the length direction of the cover main body 101 will be described as the other end of the cover main body 101. The fixing protrusions 107 and 108 are provided with bolt holes 110 and 111 into which the bolts 109 are inserted, respectively. The bolt holes 110 and 111 respectively penetrate the two protruding pieces 107 and 108 in the plate thickness direction.

  The bolt 109 is inserted so as to pass through the bolt holes 110 and 111 provided in the two projecting pieces 107 and 108, and is screwed into the nut 112. By screwing the bolt 109 with the nut 112 while passing through the bolt holes 110 and 111, the positions of the two cover members 102 and 103 can be fixed while the cut 105 is closed.

  The nut 112 may be fixed to the one protruding piece 108. By fixing the nut 112 to one projecting piece 108, it is possible to prevent the nut 112 from being dropped or lost in a state where it is not screwed with the bolt 109, that is, in a state where the cut 105 of the cover body 101 is opened. .

  Or you may provide the bolt mountain (illustration omitted) of the pitch which meshes with the pitch of the volt | bolt 109 in the internal peripheral surface of each bolt hole 110,111. Accordingly, the positions of the two cover members 102 and 103 can be fixed in a state where the cut 105 is closed without providing the nut 112 that may be lost.

  The protruding piece 108 included in one of the two cover members 102 and 103 is larger than the protruding piece 107 included in the other cover member 102. Thus, in a state where the projecting pieces 107 and 108 are overlapped with each other when the two cover members 102 and 103 are opposed to each other, a surplus portion that does not overlap with the smaller projecting piece 107 on a part of the larger projecting piece 108. (Hereinafter referred to as a “connecting protrusion”) 201.

  A connecting member 113 is attached to a connecting protrusion 201 that forms part of the protrusion 108. It is preferable that at least the surface of the connecting member 113 is insulated. For example, the connecting member 113 can be formed of the same material as the cover main body 101. The connecting member 113 includes a slit 202 having a width equal to the plate thickness of the connecting protruding piece 201. The cover body 101 and the connecting member 113 are connected by fitting a connecting protrusion 201 into the slit 202 of the connecting member 113.

  The cover body 101 and the connecting member 113 are connected by bolting the connecting protruding piece 201 and the connecting member 113 in a state where the connecting protruding piece 201 is fitted in the slit 202 of the connecting member 113. May be. Moreover, the cover main body 101 and the connecting member 113 may be connected using an adhesive.

  In the connecting member 113, a support member 114 is attached to the side opposite to the opening direction of the slit 202 (the lower side in FIG. 1 and FIG. 2). The support member 114 has a bar shape that can be expanded and contracted. The support member 114 can be realized, for example, by the same configuration as a general-purpose telescopic pole. It is preferable that at least the surface of the support member 114 is insulated.

  The support member 114 is provided so as to be able to swing within a plane passing through edge portions facing each other in the two cover members 102 and 103 with the connection position with the connection member 113 as a fulcrum (see arrow A). Thereby, the angle formed by the axial direction of the cover main body 101 and the length direction of the support member 114 can be arbitrarily adjusted. As a result, the support member 114 is swung in accordance with the angle of the lightning arrester (see reference numeral 400 in FIG. 4) with respect to the insulator series (see reference numeral 410 in FIG. 4), and the axial direction of the cover body 101 The angle formed by the length direction of the support member 114 can be arbitrarily adjusted.

  The support member 114 may be swingable along a plane (cross section that cuts the length of the cover main body 101) orthogonal to the axis of the cover main body 101 with the connection position with the connection member 113 as a fulcrum ( (See arrow B). Accordingly, the orientation of the cover body 101 with respect to the lightning arrester is adjusted to the direction in which the operator can easily work without strictly adjusting the orientation of the cover body 101 so that the cut line 105 is positioned at the lowermost end in the vertical direction. Can do.

  A tip fitting 115 is provided at the end (free end) of the support member 114 opposite to the connecting member 113. The tip fitting 115 includes a slit 117 having a width equivalent to the diameter dimension of the clevis portion 410a of the insulator series 410. The support member 114 and the tip metal fitting 115 are connected via a connection metal fitting (see reference numeral 305 in FIG. 3). It is preferable that at least the surface of the connecting member 113 or the inside of the slit 117 is insulated.

  In the cover main body 101, a band member 118 is provided at an end portion in the length direction opposite to one end where the fixing protruding pieces 107 and 108 are provided. In this embodiment, the end portion on the side where the band member 118 is provided in the length direction of the cover body 101 will be described as one end of the cover body 101. The band member 118 is configured by connecting two metal band-shaped members 119 and 120 having a substantially half shape via a support shaft 121. One of the two strip members 119 and 120 is fixed to the cover member 103.

  In the band member 118, the two band-shaped members 119 and 120 are connected so as to be relatively swingable with the support shaft 121 as a fulcrum. In a state where the band member 118 is opened, the two band-like members 119 and 120 are connected so as to form an angle of 180 degrees or more around the support shaft 121.

  In the belt-shaped members 119 and 120, bolt holes 123 and 124 into which the bolts 122 are inserted are provided at the ends opposite to the support shaft 121, respectively. The bolt holes 123 and 124 penetrate the two strip members 119 and 120 in the plate thickness direction, respectively. The bolt 122 is inserted so as to pass through the bolt holes 123 and 124 in a state where the two belt-like members 119 and 120 are closed, and is screwed into the nut 125. The bolt 122 is screwed into the nut 125 while passing through the bolt holes 123 and 124, thereby fixing the positions of the two cover members 102 and 103 on the other end side of the cover body 101 with the cut 105 closed. can do.

  FIG. 3 is an explanatory diagram showing an example of the configuration of the support member 114 and the connecting metal fitting. In FIG. 3, the support member 114 includes an outer cylinder 301 and an inner cylinder 302 that is inserted inside the outer cylinder 301. A protrusion 302 a that protrudes toward the inner peripheral side of the inner cylinder 302 is provided at the end of the inner cylinder 302 that is inserted into the outer cylinder 301. A compression spring 303 that extends and contracts along the axial direction of the outer cylinder is provided inside the outer cylinder 301.

  One end of the compression spring 303 is fixed to the end of the outer cylinder 301 on the end fitting 115 side via a fixing member 304. A protrusion 302 a provided on the inner cylinder 302 is engaged with the compression spring 303 from the other end side of the compression spring 303. The compression spring 303 biases the inner cylinder 302 in the direction in which the support member 114 extends through the protrusion 302a. When the inner cylinder 302 rotates relative to the outer cylinder 301, the engagement position of the protrusion 302a with respect to the compression spring 303 changes, whereby the length of the support member 114 can be adjusted.

  The connecting metal fitting 305 is fitted in the concave portion 306 provided in the support member 114 and is fitted in the concave portion 307 provided in the tip metal fitting 115. The connecting metal fitting 305 is inserted into the recesses 306 and 307 so as to be rotatable with respect to the support member 114 and the front metal fitting 115 even when the support member 114 and the front metal fitting 115 are fixed. Thereby, when the support member 114 is rotated with the tip fitting 115 fixed, the rotation of the support member 114 is not transmitted to the tip fitting 115.

  4 and 5 are explanatory diagrams showing the configuration of the lightning arrester 400. FIG. 4 and 5, a lightning arrester 400 to which the protection device 100 according to the first embodiment of the present invention is attached includes an insulator 401, an arc horn 402, and a support fitting 403. The insulator 401 has a so-called cantilever structure, and is supported on one end side of the insulator series 410 via the support fitting 403 on one end side in the length direction. The arc horn 402 is provided on the free end side of the insulator 401.

  One end side of the insulator series 410 is provided on the arm metal 412 of the steel tower 501, and the other end side is connected to the power transmission line 502 to be supported by the arm metal 412 so that the arm metal 412 and the power transmission line 502 are insulated from each other. To do. The brace 412 supports a power transmission line 502 connected to the upstream side (power station side) from the steel tower 501 and a power transmission line 502 connected to the downstream side (distribution substation side) from the steel tower 501. A power transmission line 502 connected to the upstream side (power station side) from the steel tower 501 and a power transmission line 502 connected to the downstream side (distribution substation side) from the steel tower 501 are connected by a jumper line 503.

  At the time of installing the lightning arrester 400, the distance Z2 from the tip of the arc horn 402 to the tip of the opposing arc horn 402 and the distance Xc from the tip of the arc horn 402 to the insulator series 410 are specified distances. Is set. These distances Z2 and Xc need to be strictly managed, and when working around the lightning arrester 400, care must be taken not to change the distances Z2 and Xc by contacting the lightning arrester 400.

  FIG. 6 is an explanatory diagram showing the lightning arrester 400 with the protection device 100 attached. 7, 8, and 9 are explanatory diagrams illustrating a procedure for attaching the protection device 100 to the lightning arrester 400. 6, 7, 8, and 9, when attaching the protection device 100 to the lightning protection device 400, first, in a state where the cut 105 is opened and the space 106 inside the cover body 101 is opened, 2 One cover member 103 of the two cover members 102 and 103 is aligned with the insulator 401 of the lightning protection device 400 (see FIG. 7).

  Next, with the connecting portion 104 between the cover members 102 and 103 as a fulcrum, the other cover member 102 is swung with respect to the one cover member 103 to close the cut 105 of the cover main body 101. Thereby, the cover main body 101 can be made into a cylinder. Then, the bolt 109 is inserted into the bolt holes 110 and 111 with the cut 105 closed, and the bolt 109 and the nut 112 are screwed together to fix the other end of the cover body 101 in a closed state ( (See FIG. 8). In this embodiment, the first fixing portion can be realized by the fixing protrusions 107 and 108, the bolt 109, the nut 112, the support member 114, and the tip fitting 115.

  Further, the bolt 122 is inserted into the bolt holes 123 and 124 with the cut 105 closed, and the bolt 122 and the nut 125 are screwed together to fix the cover body 101 in a closed state (see FIG. 8). In the first embodiment, the second fixing portion can be realized by the band member 118, the bolt 122, and the nut 125. When attaching the protection device 100 to the lightning arrester 400, after closing the cut 105 of the cover main body 101, one end side of the cover main body 101 may be fixed and then the other end side may be fixed.

  Thereafter, the outer cylinder 301 is rotated relative to the inner cylinder 302 in the direction in which the support member 114 is extended until the slit 117 of the tip metal fitting 115 is fitted into the clevis portion 410a of the lever series 410 (see FIG. 9). reference). Then, after the slit 117 of the tip metal fitting 115 is fitted into the clevis portion 410 a of the lever series 410, the outer cylinder 301 is rotated relative to the inner cylinder 302 in a direction in which the support member 114 is further extended. Accordingly, the position of the end portion of the protective device 100 on the arc horn 402 side can be fixed without applying a load to the lightning arrester 400. In this embodiment, the fitting member can be realized by the tip fitting 115.

  Since the support member 114 and the front end fitting 115 are connected via the connection fitting 305, when the outer cylinder 301 is rotated in a state where the slit 117 of the front end fitting 115 is fitted to the clevis portion 410a of the lever series 410. However, the end fitting 115 does not rotate with respect to the clevis portion 410a. As a result, the length of the support member 114 can be easily adjusted, and the burden on the worker for the mounting operation of the protection device 100 can be reduced.

  As described above, the protection device 100 according to the first embodiment of the present invention includes the arc horn 402 at the other end which is fixed to one end of the insulator train 410 whose one end is continuous in a substantially horizontal direction. A protective device 100 for protecting a lightning arrester 400 having a cantilever structure, which is formed of a hard material capable of maintaining the shape, and has a cylindrical shape including a space 106 for accommodating the lightning arrester 400 on the inside. The cover main body 101 provided with a break 105 that can be opened and closed over the entire axial direction, and a state where the lightning arrester 400 is housed in a space 106 that is provided at one end in the axial direction of the cover main body 101 and is opened by opening the cut 105. A first fixing portion (fixing protrusions 107 and 108, bolt 109, nut 112, Holding member 114, tip metal fitting 115) and a second fixing that is provided at the other end in the axial direction of cover main body 101 and fixes the position of the other end of cover main body 101 in a state where lightning arrester 400 is accommodated with respect to insulator series 410. (Band member 118, bolt 122, nut 125).

  According to the protection device 100 according to the first embodiment of the present invention, the lightning arrester 400 can be protected by a simple mounting operation without placing a burden on the worker who performs the work at a high place such as on the steel tower 501. . As a result, during transportation of a work tool or the like to a high place such as on the steel tower 501, the transportation work is restricted in order not to contact the lightning arrestor 400 with the tool or the rope or wire used for transportation of the tool. Therefore, it is possible to suppress an increase in work load. In addition, this makes it possible to reduce a worker's mental burden caused by paying attention to transporting tools, ropes, wires, and the like so as not to contact the lightning protection device 400.

  Moreover, according to the protection apparatus 100 of Embodiment 1 concerning this invention, the said lightning arrester 400 is protected by accommodating the lightning arrester 400 inside the cover member formed of the hard material which can maintain a shape. Can do. As a result, when the tool or a rope or wire used for transporting the tool is in contact with the cover body 101 during transport of a work tool or the like to a high place such as on the steel tower 501, work is performed during the original work. Even when an operator, a tool, or the like comes into contact with the cover main body 101, damage to the lightning arrester 400 accommodated inside the cover main body 101 can be prevented. Thereby, it is possible to reduce a worker's mental burden due to paying attention to transporting tools, ropes, wires and the like so as not to contact the lightning protection device 400.

  As described above, according to the protection device 100 of the first embodiment of the present invention, the lightning arrester 400 can be easily and reliably protected. As a result, the work burden and mental burden on the operator can be reduced, and the work can be carried out smoothly.

  The protection device 100 according to the first embodiment of the present invention includes a support member 114 that can be expanded and contracted between the other end of the cover main body 101 and the lever series 410, and a tip metal fitting 115 that fits into the lever series 410. A cover in a state in which the lightning protection device 400 is accommodated by realizing the second fixing portion by each of the included portions and stretching the support member 114 between the tip metal fitting 115 fitted to the insulator series 410 and the other end of the cover main body 101. The position of the other end of the main body 101 with respect to the lever series 410 is fixed.

  According to the protection device 100 of the first embodiment of the present invention, the other end of the cover main body 101 in a state in which the lightning arrester 400 is accommodated by a simple configuration and a simple operation of simply stretching the support member 114. Can be fixed with respect to the lever series 410. As a result, the work burden and mental burden on the worker can be reduced, and the work can be performed smoothly.

  Further, the protection device 100 according to the first embodiment of the present invention is characterized in that each part realizing the first fixing part and the second fixing part fixes the cover body 101 with the cut 105 closed. Yes.

  According to the protection device 100 of the first embodiment of the present invention, the position of the cover main body 101 with respect to the insulator series 410 is fixed, and the tool or When the rope or wire used for transporting the tool comes into contact with the cover main body 101, or when an operator or a tool comes into contact with the cover main body 101 during the original work, the cut 105 of the cover main body 101 works. Opening inside can be prevented. As a result, the worker can be devoted to the original work, so the work burden and mental burden on the worker can be reduced, and the work can be carried out smoothly.

  Further, the protection device 100 according to the first embodiment of the present invention is characterized in that the cover main body 101 has a substantially cylindrical shape.

  According to the protection device 100 according to the first embodiment of the present invention, the cover body 101 has a substantially cylindrical shape, so that the tool or the tool is being transported during transportation of a working tool or the like to a high place such as on the steel tower 501. When a rope or a wire used for transporting the cover comes into contact with the cover main body 101, or when an operator, a tool, or the like comes into contact with the cover main body 101 during the original work, the impact applied to the cover main body 101 due to the contact. Can be dispersed. As a result, the lightning protection device can be reliably protected and the worker can concentrate on the original work, so the work burden and mental burden on the worker can be reduced and the work can be carried out smoothly. Can be done.

(Embodiment 2)
10 and 11 are explanatory views showing the protection device according to the second embodiment of the present invention. In the second embodiment, the same parts as those in the first embodiment are denoted by the same reference numerals, and the description thereof is omitted. FIG. 10 shows a first aspect of the protection device according to the second embodiment of the present invention, and FIG. 11 shows a second aspect of the protection device according to the second embodiment of the present invention.

  10 and 11, the protection device 1000 according to the second embodiment of the present invention includes a connecting member 113 provided in the protection device 100 according to the first embodiment described above, fixing protrusions 107 and 108, bolt holes 110, Instead of 111, a band member 1001 is provided. The protection device 1000 according to the second embodiment of the present invention includes a band member 1002 instead of the band member 118 included in the protection device 100 according to the first embodiment described above.

  The band member 1001 is configured by a band-shaped member having a substantially C shape. The band-shaped member of the band member 1001 can be formed using metal or the like, for example. In the band member 1001, both ends of the band-shaped member are opposed to each other, and bolt holes 1101 into which the bolts 109 are inserted are provided. Each bolt hole 1101 penetrates both ends of the band-shaped member of the band member 1001 in the plate thickness direction.

  The bolt 109 is inserted so as to pass through each bolt hole 1101 provided at both ends of the belt-like member, and is screwed into the nut 112. The position of the two cover members 102 and 103 on the other end side of the cover main body 101 is fixed with the cut 105 closed by screwing the nut 109 with the bolt 109 passing through each bolt hole 1101. Can do. In the second embodiment, the band member 1001 can realize the second fixing portion.

  The inner diameter of the ring of the band member 1001 formed by tightening the bolt 109 is equal to or slightly larger than the outer shape of the other end side of the cover main body 101. As a result, the cover main body 101 can be rotated with respect to the band member 1001 in a state of being inserted inside the ring of the band member 1001 formed by tightening the bolt 109.

  A connecting member 1003 is attached to one end of the band-shaped member constituting the band member 1001. The connecting member 1003 has a substantially L shape, and a bolt hole 1004 is formed at a position overlapping the bolt hole 1101 at one end of the belt-like member. The connecting member 1003 can be formed using, for example, metal. It is preferable that at least the surface of the connecting member 1003 is insulated.

  The band member 1002 has a configuration similar to that of the band member 1001 and is configured by a band-shaped member having a substantially C shape. The band-shaped member of the band member 1002 can be formed using, for example, metal. It is preferable that at least the surface of the band member 1002 is insulated. In the band member 1002, both ends of the band member are opposed to each other, and bolt holes 1102 into which the bolts 122 are inserted are provided. Each bolt hole 1102 penetrates both ends of the band-shaped member of the band member 1002 in the plate thickness direction.

  The bolt 109 is inserted so as to pass through each bolt hole 1101 provided at both ends of the belt-like member and the bolt hole 1104 of the connecting member 1003, and is screwed into the nut 112. The position of the two cover members 102 and 103 on the other end side of the cover main body 101 is fixed with the cut 105 closed by screwing the nut 109 with the bolt 109 passing through each bolt hole 1101. Can do. In the second embodiment, the band member 1002 can realize the first fixing portion.

  The inner diameter of the ring of the band member 1001 formed by tightening the bolt 109 is equal to or slightly larger than the outer shape of one end side of the cover main body 101. As a result, the cover main body 101 can be rotated with respect to the band member 1001 in a state of being inserted inside the ring of the band member 1001 formed by tightening the bolt 109.

  When the protective device 1000 is attached to the lightning arrester 400, first, the cover 105 with the band members 1001 and 1002 removed is opened, and the two covers are opened while the inner space 106 is opened. One cover member 103 of the members 102 and 103 is aligned with the insulator 401 of the lightning arrester 400.

  Next, with the connecting portion 104 between the cover members 102 and 103 as a fulcrum, the other cover member 102 is swung with respect to the one cover member 103 to close the cut 105 of the cover main body 101. Then, with the cut 105 closed, the band member 1001 with the bolt 109 removed (or the bolt 109 loosened) is fitted into one end side of the cover main body 101. Thereafter, the bolt 109 and the nut 112 are screwed together.

  In addition, the band member 1002 with the bolt 122 removed is fitted into the other end side of the cover body 101 with the cut 105 closed. Thereafter, the bolt 122 and the nut 125 are screwed together. Accordingly, the cover body 101 can be rotated with respect to the band members 1001 and 1002 while the cover body 101 is maintained in the cylindrical body.

  The band member 1002 may be applied to the lightning protection device 400 with the bolts 122 loosened before the cover body 101 is aligned with the insulator 401 of the lightning protection device 400. Further, after closing the cut 105 of the cover main body 101, the other end side of the cover main body 101 may be fixed and then the one end side may be fixed.

  In the first and second embodiments described above, the inner cylinder 302 is inserted inside the outer cylinder 301 and the support member 114 is expanded and contracted by rotating the outer cylinder 301 relative to the inner cylinder 302. However, it is not limited to this. For example, it is good also as a support member (illustration omitted) of the structure which expands-contracts by inserting an inner cylinder inside an outer cylinder, and sliding an outer cylinder with respect to an inner cylinder. In this case, the support member includes a stopper (not shown) that fixes the positions of the outer cylinder and the inner cylinder.

  As described above, in the protection device 1000 according to the second embodiment of the present invention, the cover main body 101 is relative to the band member 1001 and the parts that realize the band member 1002 around the axis of the cover main body 101. It is characterized by being provided rotatably.

  The protection device 1000 according to the second embodiment of the present invention is not limited to the above-described effect of the protection device 100 according to the first embodiment, and the tool is being transported to a high place such as on the steel tower 501 during transportation. When a rope or wire used for transporting the tool touches the cover main body 101, or when an operator or a tool touches the cover main body 101 during the original work, the cover main body 101 is moved to the cover main body 101. By rotating relative to the band member 1001 and the band member 1002 around the axis, the damage to the cover body 101 due to contact can be suppressed.

  Further, the protection device 1000 according to the second embodiment of the present invention is configured such that the tool, a rope, a wire, and the like used for transporting the tool are transported to a high place such as on the steel tower 501 while the cover body 101 is used. And when a worker or a tool or the like comes into contact with the cover main body 101 during the original work, the cover main body 101 is in contact with the band member 1001 and the band member 1002 around the axis of the cover main body 101. Accordingly, the external force applied to the protection device 1000 can be released and the external force can be prevented from concentrating on the band member 1001 and the band member 1002 that support the cover main body 101. Thereby, it is possible to prevent damage to the lightning arrester 400 or the insulator string 410 at the position where the protection device 1000 is attached to the lightning arrester 400.

  As described above, the protection device according to the present invention is useful for a protection device for protecting a lightning arrester provided in a steel tower or the like, and particularly suitable for a protection device for protecting a lightning arrester that requires complicated adjustment work at the time of installation. ing.

DESCRIPTION OF SYMBOLS 100 Protection apparatus 101 Cover main body 105 Cut | interruption 107,108 Fixing piece 109 Bolt 112 Nut 113 Connection member 114 Support member 115 Tip metal fitting 118 Band member 122 Bolt 125 Nut 400 Lightning arrester 1000 Protection apparatus 1001 Band member 1002 Band member

Claims (5)

A protection device that protects a lightning arrester with a cantilever structure that has one end fixed to one end side of an insulator series that extends in a substantially horizontal direction and has an arc horn on the other end that is a free end,
A cover body that is formed of a hard material capable of maintaining its shape, has a cylindrical shape with a space for accommodating the lightning arrester inside, and has a cut that can be opened and closed over the entire axial direction of the cylinder,
A first fixing that is provided at one end of the cover main body in the axial direction and fixes one end of the cover main body in a state where the lightning arrester is accommodated in a space opened by opening the cut. And
A second fixing portion that is provided at the other end of the cover body in the axial direction and fixes the position of the other end of the cover body in a state in which the lightning arrester is accommodated with respect to the lever series;
A protective device comprising: The second fixing portion includes a support member that can expand and contract between the other end of the cover body and the lever series, and a fitting member that fits into the lever series,
Position of the other end of the cover body with respect to the insulator series in a state in which the lightning arrester is accommodated by stretching the support member between the fitting member fitted to the insulator series and the other end of the cover body The protection device according to claim 1, wherein the protection device is fixed.   3. The protection device according to claim 1, wherein the first fixing portion and the second fixing portion fix the cover body in a state where the cut is closed.   The protection device according to claim 1, wherein the cover body has a substantially cylindrical shape.   The said cover main body is provided so that it can rotate relatively with respect to a said 1st fixing | fixed part and a said 2nd fixing | fixed part centering on the axis | shaft of the said cover main body. The protective device according to any one of the above.

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