JP2011210506A - Insulator cap cover and method of manufacturing the same - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a compact and lightweight insulator protector.SOLUTION: An insulator cap cover 201 mainly has a cap 107 made of iron on one side of porcelain in the shape of substantially a disc and a pin 204 to connect with the cap on the other side, and is attached to the cap 107 of a plurality of insulators 200 connected to one another when used. The cover is formed into the shape of a cup covering the cap 107 by a material having elasticity, has an opening 206 through which the pin 204 to connect the insulators is inserted in the bottom surface in the shape of the cup, and has a notch 202 on the side surface in the shape of the cup, by opening the side surface to cover the cap 107.

Description

  The present invention relates to provision of an insulator protector useful when replacing an insulator used for an overhead power transmission line.

  As shown in FIG. 8, the conventional insulator protector protects the outer side 105 of the insulator porcelain by covering it with a cotton cloth 104 so that it will not be damaged even if it hits the outer side 105 of the porcelain during transportation or work. Protected.

  However, this cotton-filled cloth 104 protects only the outer side 105 of the porcelain and does not protect the porcelain collar 106. Here, the insulator replacement work on the power transmission tower is performed by fixing the insulators before and after the defective insulator 103 with the insulator replacement device 101 and loosening the tension applied to the defective insulator 103. In this operation, when the defective insulator 103 is removed from the normal insulator 102, the defective insulator 103 is lowered by its own weight, and the iron cap 107 comes into contact with the porcelain flange 106 of the normal insulator 102, and this flange 106 is damaged. There was a fear.

  Therefore, it was necessary to work while carefully supporting the defective insulator 103, which was troublesome. Further, when the porcelain collar portion 106 of the normal insulator 102 is damaged, the damaged insulator must be replaced, and extra work time and a replacement insulator are required.

  As a technique for solving this problem, there is a “construction insulator cover” (Patent Document 1). This construction insulator cover has a two-part structure and is pin-joined on one side of the divided part to form an opening / closing structure, and has a locking means on the opening / closing side. Also, the cover is shaped so as to cover the peripheral part and the back (saddle) side part of the porcelain part of the insulator, and it is preferable to provide a notch in the part covering the peripheral part so that the insulator mark can be exposed. Yes.

JP 2000-67671 A

  However, the “construction insulator cover” described in Patent Document 1 covers the entire insulator porcelain, and a large one has a diameter of 40 cm and a thickness of 10 cm. Therefore, it was bulky and heavy, and it was inconvenient to transport it over the transmission tower.

  Accordingly, an object of the present invention is to provide a compact and lightweight insulator protector.

  A typical configuration of the insulator cap cover according to the present invention is an insulator that is used by connecting a plurality of insulators having an iron cap on one side of a substantially disk-shaped porcelain and a pin connected to the cap on the other side. An insulator cap cover attached to the cap, formed in a cup shape that covers the cap with an elastic material, and having an opening for inserting a pin for connecting the insulators to the bottom surface of the cup shape. It has a notch for opening the side and covering the cap on the side.

  According to this configuration, by covering the insulator cap with the elastic cover, there is no possibility of damaging the cap even if it collides with the flange portion of the adjacent insulator. Therefore, a compact and lightweight insulator protector can be provided.

  The material having elasticity is preferably formed by solidifying addition-type liquid silicone rubber. The addition type liquid silicone rubber is a type of silicone rubber in which a platinum catalyst is mixed and is cured by an addition reaction. By adjusting the amount of the platinum catalyst, it can be cured at room temperature, and by heating, the curing rate can be accelerated.

  A typical manufacturing method of the insulator cap cover according to the present invention is to inject an additional liquid silicone rubber into a fixed mold, and then insert and fix the insulator cap into the mold. Is formed in a cup shape that covers the iron cap of the insulator, and an opening for inserting a pin that connects the insulators to each other and a notch for opening the side surface of the cup shape are formed. .

  According to this manufacturing method, an insulator cap cover that faithfully reproduces the shape of the insulator cap can be easily manufactured.

  According to the present invention, a compact and lightweight insulator protector can be provided by covering an insulator cap with a cover made of addition-type liquid silicone rubber.

It is a mounting view of the insulator cap cover according to the embodiment of the present invention. It is a front view of the insulator cap cover which concerns on embodiment of this invention. It is a top view of the insulator cap cover which concerns on embodiment of this invention. It is an opening top view of an insulator cap cover concerning an embodiment of the present invention. It is a perspective view of the insulator cap cover manufacturing method which concerns on embodiment of this invention. It is sectional drawing of the insulator cap cover manufacturing method which concerns on embodiment of this invention. It is process drawing of the insulator cap cover manufacturing method which concerns on embodiment of this invention. It is a schematic diagram of the insulator replacement | exchange by an insulator replacement device.

  Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. The dimensions, materials, and other specific numerical values shown in the embodiments are merely examples for facilitating understanding of the invention, and do not limit the present invention unless otherwise specified. In the present specification and drawings, elements having substantially the same function and configuration are denoted by the same reference numerals, and redundant description is omitted, and elements not directly related to the present invention are not illustrated. To do.

  The insulator cap cover according to the embodiment of the present invention will be described.

  1 is a mounting view of an insulator cap cover according to the embodiment of the present invention, FIG. 2 is a front view of the insulator cap cover according to the embodiment of the present invention, and FIG. 3 is an insulator cap cover according to the embodiment of the present invention. FIG. 4 is an opening plan view of an insulator cap cover according to the embodiment of the present invention.

  As shown in FIG. 1, the insulator 200 has an iron cap 107 on one side of a disc-shaped porcelain 205 as a main body, and a pin 204 connected to the cap 107 on the other side. A pin hole 203 is formed in the cap 107. By combining the pin 204 and the pin hole 203, a plurality of insulators 200 can be connected and used.

  The insulator cap cover 201 is used by being attached to the insulator cap 107 when the insulator 200 is attached or detached. Here, the insulator porcelain 205 is large and has a diameter of 40 cm and a height of 10 cm, whereas the insulator cap 107 is compact with a diameter of 10 cm and a height of 10 cm. Therefore, the insulator cap cover 201 is also compact.

  The insulator cap cover 201 shown in FIGS. 2 to 4 is formed in a cup shape covering the cap 107 with an elastic material having a thickness of 1 cm to 2 cm. In this embodiment, the addition-type liquid silicone rubber is solidified as a material having elasticity. Accordingly, even if the insulator cap cover 201 attached to the cap of the defective insulator 103 (see FIG. 8) contacts the flange 106 (see FIG. 8) of the porcelain of the normal insulator 102, the shock absorption is such that the flange is not damaged. Powerful, compact and light.

  Note that the thickness is not limited to 1 cm to 2 cm, and even if the insulator cap cover 201 attached to the cap 107 of the defective insulator 103 (see FIG. 8) contacts the porcelain flange 106 (see FIG. 8) of the normal insulator 102. It is sufficient if it has an impact absorption capacity that does not damage the flange and is not inconvenient for transporting onto the power transmission tower.

  The insulator cap cover 201 has an opening 206 through which the pin 204 is inserted in the cup-shaped bottom surface. The cup-shaped side surface has a notch 202 for opening the side surface and covering the cap 107. Thus, by extending the notch 202 by hand, the insulator cap cover 201 can be attached and detached with a single touch in a state where the insulators are connected to each other. After the mounting, the insulator cap cover 201 is not detached from the insulator cap 107 by fixing the periphery of the insulator cap cover 201 with tape or the like.

  Thus, by covering the insulator cap 107 with the cover formed of the addition type liquid silicone rubber, a compact and light insulator protector can be provided. Since there is no risk of the insulator porcelain 205 being damaged, it is not necessary to support the defective insulator 103 (see FIG. 8) when replacing the insulator on the power transmission tower. This eliminates the need for extra work time and replacement insulators. The removed insulator cap cover 201 can be reused.

  Next, the manufacturing method of the insulator cap cover which concerns on embodiment of this invention is demonstrated.

  5 is a perspective view of a method for manufacturing an insulator cap cover according to an embodiment of the present invention, FIG. 6 is a cross-sectional view of the method for manufacturing an insulator cap cover according to an embodiment of the present invention, and FIG. 7 is an embodiment of the present invention. It is process drawing of the insulator cap cover manufacturing method which concerns.

  First, in step ST1, as a preliminary procedure, a typical value of viscosity before curing at 23 ° C. is 20,000 mPa · s, and a standard curing time of 12 cm at a thickness of 1 cm at 23 ° C. is 12 hours. Or prepare a drum.

  In step ST2, the mold 303 is installed inside the can 304. By installing the mold 303 inside the can 304, the mold 303 can be fixed.

  Next, in step ST3, the addition type liquid silicone rubber 305 is injected into the mold 303. The addition-type liquid silicone rubber 305 has a very small shrinkage when cured at room temperature, exhibits an excellent release effect, and faithfully reproduces the original shape. The addition-type liquid silicone rubber 305 according to the embodiment has a low viscosity and a high fluidity of a representative value of viscosity before curing at 23 ° C. of 20,000 mPa · s. Thus, the mold can be taken faithfully by pouring into the mold 303.

  The representative value of the viscosity of the addition-type liquid silicone rubber before curing at 23 ° C. is not limited to 20,000 mPa · s, as long as the mold of the insulator cap 107 can be faithfully taken.

  Next, in step ST4, a plate 301 having a hole 302 having the same shape as the insulator cap 107 is placed on the mold 303. Thereby, the insulator cap 107 can be fixed. Then, an insulator cap 107 having a pin hole 203 (see FIG. 1) covered with tape is inserted into the hole 302 and fixed. This prevents the addition-type liquid silicone rubber 305 from flowing into the pin hole 203 (see FIG. 1).

  Next, in step ST5, the addition type liquid silicone rubber 305 is cured at room temperature or by heating. The standard curing time of 1 cm thickness of the addition type liquid silicone rubber 305 at 23 ° C. is 12 hours, and this is cured by heating with a lamp or the like to accelerate the curing, at 35 ° C. for 3 hours and at 70 ° C. for 60 minutes. Can be made. Thus, production can be performed in a short time.

  If the time constraint is not taken into consideration, the standard curing time of the addition type liquid silicone rubber 305 having a thickness of 1 cm at 23 ° C. is not limited to 12 hours.

  Next, in step ST6, after the cured addition type liquid silicone rubber 305 is removed from the mold 303 and the cap 107 of the insulator, an opening 206 and a notch 202 (see FIGS. 1 to 4) are formed, and burrs are removed and molded. Get the finished product.

  As described above, by using the can 304, the mold 303, and the plate 301, the insulator cap cover 201 (see FIGS. 1 to 4) can be easily manufactured. The typical value of the viscosity before curing at 23 ° C. is 20,000 mPa · s, which is a low viscosity and high fluidity, so that the shape of the insulator cap 107 can be taken faithfully. The standard curing time with a thickness of 1 cm at 23 ° C. is 12 hours, and productivity is improved by heating to accelerate curing.

  As mentioned above, although preferred embodiment of this invention was described referring an accompanying drawing, it cannot be overemphasized that this invention is not limited to the example which concerns. It will be apparent to those skilled in the art that various changes and modifications can be made within the scope of the claims, and these are naturally within the technical scope of the present invention. Understood.

  As an addition type liquid silicone rubber 305, RTV-2 silicone rubber ELASTOSIL M4648 from Asahi Kasei was used. This rubber has a typical viscosity value before curing at 23 ° C. of 20,000 mPa · s and a standard curing time of 12 hours with a thickness of 1 cm. By heating this with a lamp, curing was promoted to produce an insulator cap cover 201 (see FIGS. 1 to 4). When the prototype insulator cap cover 201 (see FIGS. 1 to 4) is used for the insulator replacement work on the actual power transmission tower, the porcelain flange 106 (see FIG. 8) of the normal insulator 102 is not damaged. It was.

DESCRIPTION OF SYMBOLS 101 insulator replacement machine 102 normal insulator 103 defective insulator 104 cloth with cotton 105 outer side of porcelain 106 porcelain collar 107 cap 200 insulator 201 insulator cap cover 202 notch 203 pin hole 204 pin 205 porcelain 206 opening 301 plate 302 hole 303 type Frame 304 Can 305 Addition type liquid silicone rubber

Claims (3)

An insulator cap cover attached to the cap of the insulator used by connecting a plurality of iron caps on one side of the substantially disk-shaped porcelain and having a pin connected to the cap on the other side,
It is formed in a cup shape that covers the cap with an elastic material, and has an opening for inserting a pin for connecting the insulators to the bottom surface of the cup shape, and the side surface is opened on the side surface of the cup shape. An insulator cap cover having a notch for covering the cap.   The insulator cap cover according to claim 1, wherein the elastic material is formed by solidifying addition-type liquid silicone rubber. Addition-type liquid silicone rubber is injected into the fixed mold, and then an insulator cap is inserted and fixed into the mold, and the additional-type liquid silicone rubber is cured to form a cup shape covering the iron cap of the insulator And the opening for inserting the pin which connects insulators, and the notch for opening the said cup-shaped side surface are formed, The manufacturing method of the insulator cap cover characterized by the above-mentioned.