KR100801543B1 - Electrical power line insulator with an end clamp - Google Patents

Abstract

An electrical power line insulator with an end clamp is provided to use a work tool to move a wire by easily mounting the work tool and firmly fix and release the wire to/from a saddle with a keeper by simply rotating a bolt. An electrical power line insulator comprises a saddle(111), a clamp(110), a keeper(150), an end clamp(100), and an insulating housing. The saddle supports a wire. The clamp is constructed by a track formed on a front surface of the saddle. The keeper presses and fixes the wire received in the saddle. The end clamp has a bolt(160) and a nut(163) to screw-couple the keeper and the saddle to horizontally move the keeper held in the track. The insulating housing is mounted to a support. The end clamp and the insulating housing are separated and assembled by a cylindrical clamp base of the clamp and a bolt(180) and a nut(182) for coupling an assembly cylindrical unit(172) of an upper fixing unit(170).

Description

ELECTRICAL POWER LINE INSULATOR WITH AN END CLAMP

1 is an exploded perspective view of an end clamp that is an important configuration of the present invention.

Figure 2 is a side cross-sectional view showing the overall coupling structure of the insulator of the present invention.

3 is a partially enlarged view of FIG. 2;

Figure 4 is a partial cutaway cross-sectional perspective view of the clamp which is an important member of the present invention.

5 is a rear view of the clamp which is an important member of the present invention.

6 to 8 is an installation implementation of the present invention.

9A and 9B are front and side cross-sectional views of some excerpts of another embodiment of the present invention.

10A and 10B are front and side cross-sectional views of some excerpts of yet another embodiment of the present invention.

** Description of symbols for the main parts of the drawing **

100: end clamp 110: clamp

111: saddle 112: seating part

113: expansion 114: reinforcement

120: clamp base 121, 121a: hole

130: track 131, 131a: hole

140: vertical walls 141, 142, 143: drain holes

150: keeper 151: screw hole

152: pressure surface 153: guide surface

160, 180: Bolt 161: O-ring 162,

181: washers 163 and 182: nuts

170: upper fixing bracket 171: crimping cylindrical portion

172: assembly cylinder 190: auxiliary tool for tool hook

200: insulation housing 210: post

220: insulating rubber 230: lower side base bracket

250: protective layer film 260: protective tube

The present invention relates to a power line insulator having an end clamp, and in particular, the end clamp and the insulating housing are separated and configured to replace the damaged parts only in case of partial damage of the insulating housing or the end clamp, thereby ensuring economic feasibility, and installing the site. And, the movement of the keeper can be operated on both sides of the bolt, providing convenience of operation, while forming drainage drain holes for the inside of the track and the clamp base to block rainwater due to the installation to prevent corrosion. The present invention relates to a power line insulator having an end clamp that ensures safety and reliability by minimizing insulation breakdown caused by the insulation.

In general, power line insulators with end clamps are used to support the wires of a distribution line and are used to press-fix the wires from outside by placing the wires in the saddle and allowing the keeper to move within the track.

Power line insulators having such end clamps have been developed in various technologies over the decades, and recently, techniques for improving safety and convenience of installation work have been disclosed in various directions.

Such power line insulators have been constructed by separately molding and molding an end housing for supporting and fixing a power line and an insulating housing assembled and fixed to a support such as pole rod, and an integrated type in which the end clamp and the insulating housing have a single structure. .

The separate structure of the former end clamp and the insulated housing is ended by screwing bolts penetrated inwardly opposite the upper fixing bracket by the extension legs of the end clamp for fixing the electric wire to the upper fixing bracket of the insulating housing. The clamp is engaged.

In this separation structure, the end clamp can be freely rotated by loosening the bolt of the fixing bracket to some extent by a ring groove formed on the outer circumferential surface of the extension leg, so that the end clamp can be freely replaced in the wiring direction or angle of the wire. However, after installation, the bolt should be tightened securely and the safety device to prevent the bolt from loosening is weak.

In other words, this separation structure causes the loosening of the screw due to the vibration of the electric wire caused by the external force such as strong wind after the installation for a long time even after the tight tightening of the bolt that binds the end clamp and the insulating housing to the insulator. As a result, the end clamp flows freely and the saddle end portion of the clamp acts as shear stress on the wire against the wiring direction of the wire, which causes a safety accident such as disconnection.

In recent years, a single-piece power line insulator has been disclosed in which an integrated bridge, that is, an extension leg of an end clamp and an insulating housing are press-bonded and fixedly assembled.

However, these single piece insulators also have a number of disadvantages compared to the separation type.

Looking at the disadvantages of such a single-piece power line insulator in detail,

First, the insulator of a single piece structure is an uneconomical problem in that the whole of the insulator is inseparable when partial damage occurs in either the end clamp or the insulating housing.

Power line insulators may be damaged after installation or during the installation process, for example, damage to birds constituting the end clamp, damage to the insulated housing caused by careless handling during installation (movement), or pecking of birds (eagles, hawks). Torn or damaged rubber due to base in the coastal area has been pointed out as a cause of power failure due to insulation breakdown, and the replacement of the insulator to solve such an accident is a very uneconomical disadvantage as it can be replaced entirely. .

Second, power line insulator of single piece structure was inconvenient for immediate tightening of conductor (power line).

The single-sided power line insulator is assembled with an auxiliary tool (eye nut) at the protruding end of the bolt assembled with the saddle of the clamp and the keeper moving to the clamp, and then a work tool such as a pulley is installed. The user can't move the keeper (clamping) by immediately tightening the bolt, and the worker can tighten the bolt after removing the work tool for tightening the bolt. Has inconvenience and time inefficiency.

Third, single-piece power line insulators have a shortcoming in saddle structure that accommodates keeper, which does not guarantee lifetime due to corrosion.

The single-piece power line insulator is a sealed structure at the bottom of the track where the keeper is guided, so that the water accumulated in the track is not drained, and the non-drained water promotes corrosion of the clamp, especially in coastal areas with high bases. As a result, the problem of lowering the insulation performance due to insulation breakdown, as well as the lifetime was not guaranteed.

The power line insulator having the end clamp of the present invention was developed to solve the problems of the conventional single piece insulator.

According to the present invention, the end clamp and the insulating housing may be composed of a separate structure of a rigid assembly structure by bolts, thereby enabling replacement of only parts having partial damage, thereby ensuring economical efficiency.

The present invention can install and use an auxiliary work tool on the bolt for fastening the end clamp and the insulated housing, and can provide the convenience and promptness of the keeper immediately after the saddle of the wire is seated.

The present invention has a structure in which the tightening of the bolt for operating the keeper can tighten both the bolt head and the nut, thereby providing convenience of operation.

The present invention can minimize the corrosion during use by installing a drainage hole so that rain water does not remain in the track of the saddle or the inside of the clamp base to ensure a long life, in particular, to prevent insulation breakdown to the maximum, such as a safety accident Can be prevented as much as possible.

The present invention provides a clamp for forming the wires to which the wires are seated to fix the wires, a keeper for pressing and fixing the wires cooperatively fixed with the birds by moving on opposite sides of the birds, and an end clamp consisting of bolts and nuts for assembling them; In the power line insulator of the one-piece structure in which the end clamp is integrally coupled to the insulating housing,

The lower part of the clamp consists of a hollow cylindrical coupling part so that the end clamp and the insulating housing can be assembled in a separate configuration.

The insulating housing is formed by assembling a cylindrical portion assembled to the upper portion of the clamp base cylindrical portion and a compressed cylindrical portion assembled by crimping by assembling the post of the insulated housing and bolting the assembled cylindrical portion of the clamp base and the upper fixed bracket. Fastening by fastening,

The clamp is achieved by forming drainage holes on the bottom of the track and the upper circumferential surface of the clamp base on the vertical wall inside the track where the keeper is guided in front of the saddle.

The power line insulator having the end clamp of the present invention has a saddle supporting a wire (power line), a track configured in front of these birds, a clamp composed of a cylindrical clamp base configured at the bottom of the track and the saddle, and seated on the saddle. An end clamp consisting of a keeper for pressing and fixing the electric wires, and a bolt and a nut for screwing the keeper and the saddle to horizontally move the keeper accommodated in the track;

An upper side fixing bracket including an upper assembly cylindrical portion engaging with the cylindrical clamp base of the saddle, and a lower pressing cylindrical portion compressively coupled to the post of the insulating housing;

It is characterized by consisting of a bolt and nut for fastening the cylindrical clamp base of the clamp and the assembly cylinder of the upper fixture.

In addition, the drain hole is formed on the inner vertical wall of the track of the clamp, the lower surface and the upper circumferential surface of the clamp base to prevent rain water from accumulating.

In addition, the saddle of the clamp is characterized in that the reinforcement is further configured on the outside of the seating portion to which the wire is seated to give strength.

Hereinafter, a power line insulator having an end clamp of the present invention will be described in more detail with reference to the accompanying drawings.

As illustrated in FIGS. 1 to 5, the present invention can be easily separated from each other by fastening the entire end clamp 100 coupled to the upper end of the insulating housing 200 using bolts and nuts.

Insulation housing 200 is a post 210 of the FRP rod is coupled to the insert molding by the insulating rubber 220 therein, the post 210 is the upper side, the lower side is inserted into a certain distance protruding and the upper fixing bracket ( 170 and the lower base bracket 230 are assembled.

The structure of the insulating housing 200, that is, the post 210, the insulating rubber 220, the base bracket 230 is the same as the conventional configuration, the insulating rubber 220 is a plurality of corrugated in order to increase the insulation distance The skirt can be configured in various ways.

The base bracket 230 is cylindrical and has a screw hole yoke 231 for assembling the electric pole inside the lower side, and the upper side has an assembly cylindrical groove 232 to which the post 210 can be fitted, thereby forming the assembly cylindrical groove. The lower end of the post 210 is fitted to the 232, and is compressed by using a crimping tool (not shown) such as a die.

In addition, the upper fixing bracket 170 is assembled by pressing the upper end of the post 210 to the pressing cylindrical portion 171 of the lower side and using a pressing tool such as a die in the same manner as the assembly method of the base bracket 230. do.

The end clamp 100 includes a saddle 111 capable of receiving electric wires (power line P / C), a track 130 formed in front of these birds, and a cylindrical shape formed at the bottom of the track and saddle 111. Clamp 110 consisting of a clamp base 120, a keeper 150 for pressing and fixing the wire (P / C) guided to the track 130 and seated on the saddle 111, and the track 130 Largely composed of a bolt 160 and a nut 163 to guide and move the keeper 150,

The upper fixing bracket 170 coupled to the post 210 of the insulating housing 200 to be coupled to the clamp base 130 of the clamp 110 is configured to integrally project the assembly cylindrical portion 172 on the upper side.

The saddle 111 has a semicircular seating portion 112 cut open at one side to allow the wire P / C to be seated, and an extension portion 113 extending outwardly at both sides of the semicircular seating portion 112. Has

The seating portion 112 is integrally molded in a state in which the reinforcing teeth 114 for reinforcing strength along the outer main surface have a predetermined interval between the extension portions 113 integrally formed on both sides and protrude on both sides.

The reinforcement bar 114 prevents deformation or breakage of the load of the wire P / C acting by an external force such as strong wind after installation to extend the life.

In addition, the track 130 is formed on one side of the saddle 111 is protruded in a square shape, the lower side of the track 130 is formed with a cylindrical clamp base 120 with a lower opening. The vertical wall 140 constituting the track 130 on the other side of the saddle 111 is formed with a bolt hole 131 for screwing the keeper 150 and a vertical wall under the saddle 111 on the opposite side thereof. The bolt holes 131a are formed in the 140, and the bolt holes 121 and 121a are formed through the clamp base 120 in the same direction.

The track 130 has a bottom surface 132 which is opened at a predetermined distance from the vertical wall 140 and extends to the clamp base 120 on the side of the saddle 111, and the vertical wall extending perpendicular to the bottom surface ( On the upper and lower surfaces of the 140, drain holes 141 and 142, through which rainwater that penetrates does not collect, are discharged.

In addition, a drainage hole 143 for draining rainwater is formed through the upper main surface of the clamp base 120.

The keeper 150 has a pressing surface 152 whose surface in contact with the electric wire P / C is concave like the external shape of the electric wire, and the keeper 150 can be moved forward and backward on the rear lower portion of the pressing surface. The female threaded screw hole 151 is formed, and the guide surface 153 in both longitudinal directions further protruded to the rear so as to stably contact with the upper surface of the track 130 when the keeper 150 moves forward and backward.

The keeper 150 accommodated in the track 130 is screwed with the bolt 160 to be moved back and forth horizontally, and the bolt 160 coupled to the keeper 150 and the track 130 is coupled to the bolt head side. An O-ring 161, a washer 162 and a nut 163 coupled to the other end of the bolt 160 protruding out of the saddle 111.

The use of the O-ring 161 is used for the purpose of preventing damage due to friction between the bolt 160 of the steel screwed to the saddle 111 of the aluminum material to be cast molding, as well as for the prevention of loosening.

The saddle 111 is formed to be inclined slightly downward with respect to the post 210, which is a central longitudinal axis of the insulating housing 200.

In other words, the present invention provides that the depth of the seating portion 112 of the saddle 111 is provided and seated therein when the insulating housing 200 is attached to the support in a vertical or horizontal manner at the support of the pole (whole). Support of the electric wire P / C to be stabilized can be fixed stably and effectively.

Since the inclination of the saddle 111 is already widely commercialized in the related art, a detailed description thereof will be omitted.

The end clamp 100 configured as described above is coupled to the upper fixing bracket 170 coupled to the post 200.

The upper fixing bracket 170 is a solid cylindrical assembly cylindrical portion 172 having the same shape as the cylindrical clamp base 120, and a hollow cylindrical crimp that is integrally formed at the lower portion of the assembly cylindrical portion and compressed to the post 210. The coupling part 171 is included.

The assembly cylindrical portion 172 is formed to an outer diameter that is coupled to the inner diameter of the clamp base 120, the holes 173, 173a are formed through the corresponding to the holes 121, 121a of the cylindrical clamp base 120.

The assembly cylindrical portion 172 and the cylindrical clamp base 120 are fixed to the rotation by the bolt 180 and the nut 182 to prevent rotation, the washer 181 to the bolt 180 to prevent the nut 182 from loosening. More combined.

The bolt 180 has a length at which an end thereof protrudes a predetermined distance, and may be used by coupling an auxiliary tool for working tool hook, for example, an eye nut 190, to the protruding bolt end.

In the present invention, the end clamp 100 and the insulating housing 200 are separated and configured, and the auxiliary tool 190 for the work tool hook is coupled to the bolt 180 fixed after assembly thereof, and a pulley (not shown) as in the related art. The wire (P / C) can be moved using a moving mechanism, such as), and the keeper 150 immediately after seating the wire (P / C) on the seating portion 112 of the saddle 111 of the clamp 110. The screw can be screwed in for stable fixing.

The power line insulator having the end clamp of the present invention configured as described above has an upper housing bracket 170 fixed to an end (exposed part) of the post 210 of the FRP rod material in which the insulating housing 210 of the silicone rubber material is formed on the outside. By fitting the cylindrical clamp base 120 to the assembly cylindrical portion 172 of each of the holes 121, 121a; 173, 173a to align.

Then, the fastening and fixing using the bolt 180, washer 181 and nut 182 is fastened to the upper fixing bracket 170 and the end clamp 100 of the insulating housing 200.

Afterwards, the eye nut 190 for the work tool hook is fastened to the screw part of the protruding bolt 180.

Meanwhile, when the keeper 150 is accommodated in the track 130 of the saddle 111, the guide surface 153 of the keeper 150 contacts the upper surface around the track 130, and the female screw hole 153 of the keeper 150 is provided. And the holes 131, 131a of the track 130 are aligned. At this time, the O-ring 161 is coupled to the bolt 160 to pass through the aligned holes 131, 151, and 151 a, and the washer 162 and the nut 163 are coupled to the bolt 160 protruding outward from the saddle. Fix it.

As described above, the power line insulator having the end clamp 100, which is fastened to the end clamp 100 by using the upper fixing bracket 170 on the post 200, is fixedly installed on the wire post or the steel tower 300, and the like. When the P / C is seated on the saddle 111 and the bolt 160 coupled to the saddle 111 is rotated clockwise or counterclockwise, the keeper 150 screwed with the bolt 160 is tracked. Guided to the 130 is moved in the front and rear direction by pressing the wire (P / C) in the saddle 111 is made of a pressing fixed.

At this time, since the pressing surface 152 of the keeper 150 pressing the outer circumferential surface of the wire P / C is concave, the pressing contact area between the keeper 150 and the wire P / C is made larger. You lose.

And the bolt 180 end of the upper fixing bracket 170 can be utilized by screwing the eye nut 190 for the work tool hanger, and as a means of temporary mounting of electric wire (power line) by screwing a separate auxiliary tool It can be utilized.

In the power line insulator having the end clamp of the present invention, as shown in FIGS. 7 and 8, the post 210, which is the central longitudinal axis of the insulating housing 200, may be installed with a predetermined slope on the horizontal direction.

In this installation, the installation as shown in Figure 7 is the same as the installation in the vertical direction, the discharge of rainwater is smoothly provided by the drain hole 141 penetrated to the lower surface of the vertical wall 140 as the inside of the track 130 It prevents corrosion as much as possible and prevents breakdown

8, that is, when the end clamp 110 is located below the insulating housing 200 than the horizontal direction, the clamp base 120, which is a connection portion between the end clamp 110 and the insulating housing 200, is formed. The drainage of the rainwater penetrated by the drainage hole 143 penetrated in the upper main surface and the drainage hole 142 penetrated in the upper surface of the vertical wall 140 of the track 130 is smoothly provided to prevent corrosion to the maximum. Destruction is prevented.

9 and 10 show another embodiment of the present invention,

According to another embodiment of the present invention, when the wire (P / C) of the supported distribution line is constructed of the coated wire, the outer cover of the conductor constituting the wire (P / C) is wound in the clamping process. Protective layer 250 or protective tube 250 made of a semiconductive polymer material to prevent damage to the wire coating due to vibration friction after clamping support, to prevent electrical stress due to clamp connection (clamping) of the coated wire, and to prevent electrical tracking. ) Is configured to include more.

Specifically, as shown in FIGS. 9A and 9B, a semiconductive polymer material is formed on the inner surface of the pressing surface 152 of the keeper 150 and the seating portion 112 and the both side expansion portions 113 of the saddle 1110. The protective layer 250 may be formed by coating a predetermined thickness,

As shown in FIGS. 10A and 10B, a protective tube 260 of semi-conductive polymer material having a cutout 261 in the longitudinal direction may include a pressing surface 152 of the keeper 150 and a seating portion of the saddle 111. It may be configured to protect the sheath of the wire (P / C) by being clamped in the state of being fitted by the cutout (261) on the outer peripheral surface of the wire (P / C) to be clamped between 112.

Although the power line insulator of the present invention is separated from the insulating housing and the end clamp, it is a rigid structure without flow after binding by bolts, and structure that prevents breakdown due to smooth drainage of rainwater collected in the connection part and track according to installation. The end clamp can be easily and easily replaced to fit the wire size.

In addition, in the case of the wire coated wire to construct the distribution line, the universality of the product is further guaranteed by using a protective layer film or a protective tube for stable support even after the wire coating is clamped or clamped.

The power line insulator having the end clamp of the present invention as described above can be easily mounted and used a work tool capable of moving the wire, and by simply rotating the bolt to the wire seated on the saddle, the wire is firmly fixed to the saddle by the keeper. It can be released or released, and prevents the accumulation of rain on the clamp, thereby providing the effect of preventing the life and safety accidents caused by corrosion protection.

Claims (9)

delete Power line insulators include saddles that support the wires, clamps consisting of tracks configured on the front of these birds, keepers that press and hold the wires seated on the saddles, and screw the keeper and saddles to horizontally move the keeper housed in the tracks An end clamp consisting of bolts and nuts to be joined together with an insulating housing attached to the support, a clamp base formed in a cylindrical shape integrally with the track of the clamp and the bottom of the saddle, and an upper assembly cylindrical part engaged with the cylindrical clamp base. The end clamp and the insulating housing are separated and assembled by an upper fixing bracket composed of a lower compression cylinder portion which is pressed against the post of the insulating housing, and a bolt and a nut that fastens the assembly cylinder of the cylindrical clamp base and the upper fixture of the clamp. In the power line insulator configured to The bolt for fastening the clamp base and the assembly cylinder bolts protrude a certain distance to the end of the power line insulator having an end clamp, characterized in that can be used in combination with the tool holder eye nut or wire mounting auxiliary tool. The method of claim 2, A power line insulator having an end clamp, wherein a bolt to which a work tool for a tool hook is coupled and a bolt for moving the keeper forward and backward are separately installed. The method of claim 2, A power line insulator having an end clamp, wherein a drainage hole is formed in the clamp track to prevent rain from accumulating in the clamp base. The method of claim 2, The saddle of the clamp is a power line insulator having an end clamp, characterized in that it has a certain interval on the outside of the mounting portion to which the wire is seated, and further constitutes a reinforcement. The method of claim 2, The keeper has a pressing surface in which the surface in contact with the wire is concave like the appearance of the wire, a hole formed with a female thread in the rear lower portion of the pressing surface to enable the keeper to move forward and backward, and an upper portion of the track when the keeper moves forward and backward. A power line insulator having an end clamp, characterized in that it comprises both longitudinal guide surfaces protruding further rearward in contact with the surface to guide them stably. The method according to claim 5 or 6, An end surface of the keeper's pressing surface, the saddle's seating portion, and the inner surface of both side expansion portion further includes a protective layer film coated with a semi-conductive polymer material to protect the covering of the electric wire constituting the distribution line. Power line insulator with clamp. The method according to claim 5 or 6, The pressing surface of the keeper, the seating portion of the saddle, and the inner surface of both expansion portions further include a protective tube of semiconductive polymer material having a cut in the longitudinal direction, and is clamped in the state of being fitted by the cut portion on the outer circumferential surface of the wire to protect the covering of the wire. Power line insulator having an end clamp. delete

Images