JP2018085811A - Insulator support net - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an insulator support net capable of safely and promptly performing work and preventing an insulator or the like from falling when exchanging a specific insulator in an insulator chain.SOLUTION: An insulator support net comprises: a net body 21 which has a mesh size enough for preventing a connection pin 6 connecting an insulator 1 from being passed, and is capable of holding the insulator 1; and fixtures 22 which are provided at edge parts of the net body 21 for fixing the net body 21 to an insulator exchanger 10. The net body 21 is fixed to the insulator exchanger 10 by the fixtures 22, such that a lower side of the insulator 1 held by the insulator exchanger 10 is covered by the net body 21.SELECTED DRAWING: Figure 1

Description

  The present invention relates to an insulator support net that is attached to an insulator changer used for exchanging a specific insulator from among a plurality of insulator chains in which a plurality of insulators are connected.

  Many of the overhead transmission line insulators are used by connecting a plurality of suspension insulators. When replacing one or two insulators that have become defective from this insulator series, it has been conventional to take insulators. An exchange device is used (for example, refer to Patent Document 1). When exchanging the insulator using this insulator exchanger, first, the two insulators (at both ends sandwiching the middle two) are gripped by the gripping metal fittings at both ends of the insulator exchanger. Thereby, a frame-like insulator replacement device is mounted so as to sandwich the four insulators that are connected. At this time, the tension is applied to the insulator series.

  Secondly, the tension of the lever series is weakened by reducing the dimension between the gripping brackets of the lever replacement. Third, the connecting pin that connects the defective insulator and the adjacent insulator is removed. Fourth, remove the defective insulator and replace it with a new insulator. Fifth, a new insulator and an adjacent insulator are connected by a connecting pin. 6thly, the dimension of the connection direction (between gripping metal fittings) of the insulator changer is expanded, and tension is applied to the insulator series.

JP 2013-46535 A

  By the way, when replacing a defective insulator using such an insulator changer, an operator on the tower has an insulator to be replaced with one hand, and the connecting pin between the insulators is removed with the other hand. It must be made. For this reason, the burden on the worker is great, and not only does the work take time, but there is a risk that the insulator or the connecting pin may be accidentally dropped.

  SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to provide an insulator support net that can be operated safely and quickly when a specific insulator in the insulator series is exchanged and that prevents the insulator or the like from falling. And

  In order to solve the above-mentioned problems, the invention of claim 1 is an insulator support net attached to an insulator replacement unit used for exchanging a specific insulator from among a plurality of insulators connected to an insulator. A net body having a mesh size through which a connecting pin for connecting the insulator cannot pass, and capable of holding the insulator; and provided at a peripheral edge of the net body, the net body being used as the insulator replacement device. An attachment for attaching to the insulator, and the net body covers the lower side of the insulator sandwiched between the insulator replacement by attaching the net body to the insulator replacement with the attachment. It is characterized by.

  According to a second aspect of the present invention, in the lever support net according to the first aspect, the fixture is configured by a hook, and the net main body is configured by hooking the fixture on a rod-shaped turnbuckle of the lever changer. It is attached to the said insulator replacement | exchange device, It is characterized by the above-mentioned.

  The invention of claim 3 is the insulator support net according to claim 1 or 2, wherein the net body is formed in a semi-cylindrical shape, and the lower side of the insulator sandwiched between the insulator changers is formed in a semi-cylindrical shape. It is characterized by covering.

  According to the first aspect of the present invention, by attaching the net body to the insulator replacement device with the fixture, the lower side of the insulator sandwiched between the insulator replacement devices is covered with the net body capable of holding the insulator. For this reason, it is not necessary for the worker to hold the lever by hand, the burden on the worker can be reduced, and the replacement operation of the lever can be performed safely, easily and quickly. In addition, since the mesh size of the net body is such that the connecting pin cannot pass therethrough, it is possible to prevent the insulator and the connecting pin from falling. Moreover, since the net body is a net, it is light and easy to carry and handle.

  According to the second aspect of the present invention, the lever support net can be manufactured at a low cost because of the simple structure in which the fixture is formed of a hook. In addition, since the net body is attached to the insulator replacement device by simply hooking the attachment device as a hook on the turnbuckle of the insulator replacement device, the insulator support net can be attached easily and quickly.

  According to the invention of claim 3, since the net body has a simple configuration of a semi-cylindrical shape, the insulator support net can be manufactured at a low cost. In addition, the lower side of the insulator sandwiched by the insulator replacement is covered in a semi-cylindrical shape with the net body (because the net body surrounds the lower side of the insulator), so that the insulator and connecting pins can be more reliably dropped. Can be prevented.

It is a perspective view which shows the state before attaching the insulator support net which concerns on embodiment of this invention to an insulator replacement device. It is a top view which shows the state which covered the lever support net | network of FIG. 1 on the lever changer. It is a side view which shows the state which covered the lever support net | network of FIG. 1 on the lever changer. It is a front view which shows the state just before covering the insulator support net | network of FIG. 1 on an insulator replacement device. It is a front view which shows the state immediately after putting the insulator support net | network of FIG. 1 on the insulator replacement device. It is a top view which shows the state which put the insulator support net | network of FIG. 1 on the insulator replacement device, and reversed the insulator replacement device. It is a side view which shows the state which put the insulator support net | network of FIG. 1 on the insulator replacement device, and reversed the insulator replacement device.

  The present invention will be described below based on the illustrated embodiments.

  1 to 7 show an embodiment of the present invention, and FIG. 1 is a perspective view showing a state before the insulator support net 20 according to this embodiment is attached to a turnbuckle-type insulator changer 10. is there. This insulator support net 20 is a net attached to an insulator changer 10 used for exchanging a specific insulator 1 from among the insulator series 7 in which a plurality of insulators 1 are connected. And a fixture 22.

  Here, first, the insulator 1 and the insulator replacement device 10 will be described.

  As shown in FIG. 6, the insulator 1 is made of porcelain, and an umbrella part 2 and a head part 3 are integrally formed, and a connecting metal fitting is provided at each of the end part of the umbrella part 2 and the end part of the head part 3. 4 and 5 are fixedly embedded. Of the two insulators 1, 1, the connecting pin 6 is inserted into the connecting bracket 4 on the umbrella 2 side of one insulator 1 and the connecting bracket 5 on the head 3 side of the other insulator 1. Thus, the two insulators 1 and 1 are connected. In this way, a plurality of insulators 1 are connected to form an insulator series 7.

  As shown in FIG. 3, a hooking protrusion 3 a having a triangular cross section is formed on the base peripheral surface of the head 3 of the lever 1, and a hooking groove formed in a gripping portion of the lever changer 10 described later. 16 is engaged.

  Further, although not shown in the figure, the insulator series 7 has an insulator 1 on the tower side connected to a steel tower via a grounding yoke, and an insulator 1 on the overhead transmission line side connected to a transmission line via a line side yoke. Has been. Thereby, the tension | tensile_strength always works in the direction in which the insulator string 7 is pulled from a steel tower by the dead weight of a power transmission line.

  As shown in FIG. 1, the insulator changer 10 connects the holding metal fitting 11 that holds the two insulators 1 and the insulator 1 separated from each other in the insulator series 7, and connects both ends of the two holding metal fittings 11. And a rod-shaped turnbuckle 17 extending in the connecting direction of the lever series 7, and has a frame shape as a whole.

  The gripping metal 11 is formed with a ring-shaped gripping portion at the center, and the head 3 of the lever 1 is gripped and engaged with the gripping portion. That is, the holding metal fitting 11 is configured such that a lower fixing metal fitting 12 and an upper movable metal fitting 13 that are substantially semicircular and extend at both ends horizontally form a ring.

  The upper movable bracket 13 is connected to the lower fixed bracket 12 so that the upper movable bracket 13 can be pivoted (opened / closed) at one end by a hinge 14, and the other end is attached to and detached from the lower fixed bracket 12 by a thumbscrew 15 (lock and lock). Release) is free. Thereby, the holding | grip metal fitting 11 can open the ring-shaped holding part by removing the thumbscrew 15 and opening the upper movable metal fitting 13, and can position the head 3 of the insulator 1 in a holding part. Then, by closing the movable metal fitting 13 and tightening the thumbscrew 15, the head 3 of the insulator 1 can be sandwiched and held between the lower fixed metal fitting 12 and the upper movable metal fitting 13.

  Further, the ring-shaped gripping portion formed by the lower fixed metal fitting 12 and the upper movable metal fitting 13 is formed with a hooking groove 16 that engages with the hooking protrusion 3a of the head 3 of the lever 1 on the inner peripheral surface thereof. ing. As a result, when the head 3 of the insulator 1 is gripped by the gripping metal 11, it can be firmly gripped.

  The turnbuckle 17 is composed of two pairs of screw rods 18 and 18 respectively connected to the two holding fittings 11 and 11 and a body nut 19 screwed into the two pairs of screw rods 18 and 18. A ratchet rod 30 having a ratchet function is attached to the nut 19. That is, two opposing gripping fittings 11 and 11 and four screw rods 18 and 18 are arranged in a substantially rectangular frame shape, and two screw rods 18 and 18 whose end portions are opposed to each other through a trunk nut 19. It is connected.

  Further, the two screw rods 18 and 18 whose end portions face each other are formed with reverse screws, and by rotating the body nut 19, both ends of the screw rods 18 and 18, that is, the distance between the two holding metal fittings 11 and 11. Can be expanded or narrowed. At this time, since the ratchet rod 30 is attached to the body nut 19, the interval between the gripping metal fittings 11, 11 can be easily increased or decreased by reciprocating the ratchet rod 30 in the arc direction. Is.

  Next, the configuration of the insulator support net 20 will be described.

  The net body 21 has a mesh size that cannot pass through the connecting pins 6 that connect the insulator 1, and is a net-like body that can hold the insulator 1. That is, it is made of a material having high strength and high hardness (for example, an aluminum alloy or stainless steel), and even if the operator accidentally removes the insulator 1 from the hand when the insulator 1 is replaced, it is received by the net body 21. It can be (can be held).

  Here, the material of the net body 21 is not limited to aluminum alloy, stainless steel, or the like, but may be any material that has relatively high strength and high hardness, and may be, for example, hard plastic. Since the insulator 1 is normally about 5 kg, it should just have the intensity | strength etc. which can endure this. However, in the case of a stretchable material such as cloth, the size of the mesh also changes, and an object to be received (such as the insulator 1 and the connecting pin 6) may be spilled from the mesh, which is not preferable.

  Further, the size of the mesh of the net body 21 is such that the connecting pin 6 of the insulator series 7 does not fall out. This is to prevent the connecting pin 6 from dropping when the defective insulator 1 is replaced as will be described later. Here, if the connecting pin 6 is the smallest among the objects to be received and the connecting pin 6 is received, all objects including the insulator 1 can be received. That is, the size of the mesh of the net body 21 may be set such that the smallest item among the items to be received does not fall out.

  Such a net body 21 is formed in a semi-cylindrical shape, and covers the lower side of the insulator 1 sandwiched by the insulator replacement device 10 in a semi-cylindrical shape. That is, as shown in FIG. 1, it is a semi-cylindrical shape (outer shape is bowl-shaped) provided with fan-shaped (semi-circular) end faces at both ends, and is attached to the insulator replacement device 10 as will be described later. The lower side of the insulator 1 sandwiched between the exchangers 10 is covered in a semi-cylindrical shape (covered so as to surround the lower periphery of the insulator 1), and the side surfaces of the insulator 1 at both ends are covered.

  Here, in a state where the net main body 21 is attached to the insulator replacement device 10, a space for an operator to replace the insulator 1 and the like is secured, and the operation can be easily performed while holding the insulator 1. The shape and size of the net body 21 are set (so that the net body 21 can be held close to the lower surface of the insulator 1). In addition, the plane size of the net body 21 is set to be slightly larger than the plane shape of the insulator replacement device 10, so that even if the operator accidentally releases the insulator 1 etc., the insulator 1 etc. The net body 21 can be surely received.

  A plurality of attachments 22 are provided on the peripheral edge of the net body 21 and are used to attach the net body 21 to the insulator replacement device 10. In this embodiment, it comprises a hook, and the net body 21 is attached to the insulator changer 10 by hooking the attachment 22 on the rod-shaped turnbuckle 17 of the insulator changer 10.

  That is, as shown in FIG. 1, the fixture 22 is configured by a hairpin-like hook, and a plurality of fixtures 22 are provided on both side edges (long sides) facing the turnbuckle 17 of the net body 21. Here, the material / strength and the number of the fixtures 22 can be stably received (held) by the net body 21 even if the operator accidentally releases the insulator 1 or the like. Is set to

  Then, the net main body 21 is attached to the insulator replacement device 10 by hooking these attachments 22 to the screw rod 18 and the body nut 19 of the turnbuckle 17. At this time, since the fixture 22 is in the shape of a hairpin, the fixture 22 is hugged and cannot be easily detached by hooking it after making the tip of the fixture 22 slightly open. Yes.

  By attaching the net body 21 to the insulator replacement device 10 with the fixture 22 in this manner, the net body 21 covers the lower side of the insulator 1 sandwiched between the insulator replacement devices 10 as will be described later. . Here, the attachment 22 may be formed integrally with the net body 21, or a separate attachment 22 may be attached to the net body 21.

  Next, a procedure for attaching the lever support net 20 having such a configuration to the lever changer 10 and a method for replacing the lever 1 using the lever support net 20 will be described. In addition, about the procedure which attaches the insulator replacement | exchange device 10 to the insulator series 7, it is as above-mentioned.

  1stly, the insulator replacement | exchange device 10 is attached to the insulator series 7 so that this may be pinched | interposed into the part containing the defective insulator 1 used as the exchange object of the insulator series 7. FIG. Secondly, as shown in FIG. 4, the net body 21 is covered from above the insulator exchanger 10 attached to the insulator series 7. Third, as shown in FIG. 5, the fixture 22 around the net body 21 is hooked on the turnbuckle 17 of the insulator changer 10. As a result, as shown in FIGS. 2 and 3, the net body 21 covers the upper surface side (the side that becomes the lower surface when rotated 180 degrees) of the insulator string 7.

  Fourth, as shown in FIGS. 6 and 7, the insulator replacement device 10 is rotated 180 degrees from this state. Thereby, the net main body 21 is located on the lower side of the insulator replacement device 10 and covers the lower side of the insulator 1 sandwiched between the insulator replacement devices 10. Thus, without covering the insulator support net 20 by dropping the insulator replacer 10 and the insulator support net 20 by 180 degrees after attaching the net body 21 from above the insulator exchanger 10 and attaching it, The insulator support net 20 can be attached safely and easily.

  Fifth, the turnbuckle 17 is operated to narrow the gap between the gripping metal 11 and the gripping metal 11 that are located apart from each other in the connecting direction. Sixth, the tension between the insulator 1 and the insulator 1 is loosened, and the connecting pin 6 connecting the both is removed, and the defective insulator 1 is removed. At this time, since the net body 21 is located below the insulator replacement device 10, the operator does not have to support the defective insulator 1 by hand, and the defective insulator 1 is received (held) by the net body 21. ) Of course, the operator may perform the work while supporting the defective insulator 1 by hand. Further, even if the connecting pin 6 and the defective insulator 1 are removed by mistake, the net main body 21 can receive the connection pin, so that a fall accident can be prevented.

  Seventh, the new insulator 1 is disposed and the connecting pin 6 is inserted into the adjacent insulator 1 to attach the new insulator 1. In this case as well, since the work is performed above the net body 21, even if the lever 1 and the connecting pin 6 are removed by mistake, they are received by the net body 21.

  Eighth, after the new insulator 1 is attached, the turnbuckle 17 is operated to expand the connecting direction of the insulator changer 10, and tension is applied to the insulator chain 7. Finally, the insulator replacement device 10 is rotated 180 degrees from this state. As a result, the net body 21 is positioned above the insulator exchanger 10, the attachment 22 is removed from the turnbuckle 17, and the insulator support net 20 is removed from the insulator exchanger 10.

  As described above, according to this insulator support net 20, by attaching the net body 21 to the insulator exchanger 10 with the fixture 22, the lower side of the insulator 1 sandwiched between the insulator exchangers 10 It is covered with a net body 21 that can be held. For this reason, it is not necessary for the operator to hold the insulator 1 by hand, the burden on the operator can be reduced, and the replacement operation of the insulator 1 can be performed safely, easily and quickly. Further, since the mesh size of the net body 21 is such that the connecting pin 6 and the like cannot pass therethrough, it is possible to prevent the insulator 1 and the connecting pin 6 from falling. Moreover, since the net body 21 is a net, it is light and easy to carry and handle.

  Further, since the fixture 22 is a simple configuration including a hook, the insulator support net 20 can be manufactured at a low cost. In addition, since the net body 21 is attached to the insulator changer 10 simply by hooking the fixture 22 that is a hook onto the turnbuckle 17 of the insulator changer 10, the insulator support net 20 can be easily and quickly attached. .

  Furthermore, since the net body 21 has a simple configuration of a semi-cylindrical shape, the insulator support net 20 can be manufactured at a low cost. In addition, since the lower side of the insulator 1 sandwiched between the insulator changers 10 is covered in a semi-cylindrical shape by the net body 21 (because the net body 21 covers the lower periphery of the insulator 1), the insulator 1 and the connection It becomes possible to prevent the pin 6 from dropping more reliably.

  Although the embodiment of the present invention has been described above, the specific configuration is not limited to the above embodiment, and even if there is a design change or the like without departing from the gist of the present invention, Included in the invention. For example, in the above-described embodiment, the case where the net body 21 has a semi-cylindrical shape has been described. However, other shapes (for example, a semi-rectangular tube shape) may be used. Further, the net body 21 may be constituted by a plurality of nets and connected, and the net body 21 may be constituted by a padding plate in which a plurality of holes are provided in a plate material.

  On the other hand, although the fixture 22 is hooked on the turnbuckle 17 of the insulator changer 10, it may be hooked on another part (for example, the holding metal fitting 11). Further, the shape and structure of the fixture 22 are not limited to the hairpin-like hooks, and may be constituted by, for example, a clip that holds the turnbuckle 17.

  Furthermore, the attachment procedure of the insulator support net 20 may be other than the above procedure depending on the working environment. For example, the net body 21 may be directly attached to the lower side of the insulator replacement device 10 instead of covering the net body 21 from above the insulator replacement device 10 and rotating it 180 degrees. Moreover, although the case where the insulator replacement | exchange device 10 was a turnbuckle type was demonstrated, it is applicable also to a hydraulic-type insulator replacement device as shown to Unexamined-Japanese-Patent No. 2000-59936.

DESCRIPTION OF SYMBOLS 1 Insulator 7 Insulator ream 6 Connection pin 10 Insulator changer 17 Turn buckle 20 Insulator support net 21 Net body 22 Attachment

Claims (3)

An insulator support net attached to an insulator changer used for exchanging a specific insulator from a plurality of insulators connected to each other,
A net body having a mesh size through which a connecting pin for connecting the insulator cannot pass, and capable of holding the insulator;
A fitting provided on a peripheral portion of the net body, for attaching the net body to the insulator replacement;
And the net main body covers the lower side of the insulator sandwiched between the insulator replacement devices by attaching the net body to the insulator replacement device with the fixture. The fitting is composed of a hook, and the net body is attached to the insulator changer by hooking the attachment on a rod-like turnbuckle of the insulator changer.
The insulator support net according to claim 1, wherein: The net body is formed in a semi-cylindrical shape and covers the lower side of the insulator sandwiched between the insulator replacement devices in a semi-cylindrical shape,
The insulator support net according to any one of claims 1 and 2.

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