KR102339717B1 - Deflection prevention device for power lines in the sky - Google Patents

Abstract

A deflection prevention device for an overhead distribution line of the present invention comprises: an extension extending from a support installed on a pole to a cable side; a driving unit installed on the extension and providing power; a winding drum connected to the driving unit so that a cable supported by an insulator installed on the support can be wound; a restraining ring member for maintaining a state in which a cable is adjacent to the winding drum to wind the cable on the winding drum by arranging the cable adjacent to the winding drum when the winding drum rotates; and a detachable unit for detachably connecting the restraining ring member to the winding drum.

Description

Deflection prevention device for power lines in the sky}

The present invention relates to an apparatus for preventing sagging for overhead distribution lines, and more particularly, when the horizontal degree of a cable extending from a support of a post exceeds a set range and is inclined in the downward direction, it is determined that sagging of the cable has occurred. It prevents the cable from sagging while winding the cable on the winding drum, and when the amount of winding of the cable wound on the winding drum reaches the set value, it sends a work request to the control unit to perform tensioning work or cable replacement work to prevent cable sagging. It relates to a deflection prevention device for overhead distribution lines that allows

In general, the large power generated in a power plant is transmitted to each substation as high-voltage power through a transmission line such as a power transmission tower, and then the substation undergoes several stages of transformation to transform the electric wire so that it can be used by consumers such as homes or buildings. It is a well-known fact that it goes through a distribution process that is supplied to each region using

At this time, power supply to general consumers is supplied through poles installed at regular intervals, and the wires at each pole are connected using jumper wires. It was used by constructing upward.

Connect the wires and cables to be connected to the pole through a suspension insulator from both sides of the pole installed horizontally on both sides of the pole, and connect the suspension insulator and another suspension insulator with a jumper wire, but the connected jumper wire is at the top of the pole. It was used by constructing upward so that it could be supported through the installed support insulator.

On the other hand, when a distribution line is installed between an electric pole and an adjacent electric pole, it sags downward due to its own weight or temperature change. .

In order to solve this problem, the patent document (Registered Patent No. 10-1444886) has a guide hole that is horizontally penetrated on one side and has a protrusion formed on the penetrated inner peripheral surface, and is fixed in parallel to a telephone pole. A rack movably installed between the mounts via a member, a first pinion having left and right threaded tabs opposite to each other on the inner circumferential surface, disposed between the guide grooves of the mount and rotating in engagement with the rack; An insulator for fixing the overhead distribution line, a coupling groove is formed along the longitudinal direction, and a screw part having a left or right spiral on the outer circumferential surface is provided, inserted into the protrusion of the guide groove and fastened to the first pinion, A reciprocating transfer member whose length is adjusted by rotation, a temperature sensor installed on the mount to measure the ambient temperature and output a measured temperature value, and a temperature sensor that receives a temperature value and outputs a forward/reverse rotation signal to the drive motor A drive motor having a control unit, a second pinion engaged with the rack, installed on the mounting table, receiving a forward/reverse rotation signal from the control unit, and forcibly rotating the second pinion in a forward/reverse direction; Formed between a connecting rod having a 'TT'-shaped cross-section that is installed in parallel to be spaced apart and interconnected to each other, a receiving portion formed inside the upper surface, a guide portion formed on the lower surface and movably fitted to the connecting rod, and the guide portion and a stopper receiving portion into which the stopper is inserted, a workbench having a protruding piece formed on the inner surface of the stopper receiving portion and protruding to face each other to guide the guide piece, and a guide piece inserted into the protruding piece, the stopper reserving portion of the work material It consists of a workbench assembly composed of a stopper inserted into the workbench to limit the reciprocating movement of the workbench, and the structure is very complicated, and it is difficult to control the initial wiring of the distribution line and the movement distance of the distribution line.

To solve the above problems, a sag prevention device for overhead distribution lines has been developed, and the sagging prevention device according to the prior art is a sagging prevention base pipe that is connected to the Gyeongwangeum body fixed to the electric pole, the Gyeongwangeum body and the movement guide pipe. and a plurality of guide rods screwed to a nut having one side fixed to the periphery of the anti-sag base pipe while being spaced apart from each other in the circumferential direction, and the guide rod passing through the guide rod and being supported by the guide rod. The insulator, the fixing nut that is screwed to the guide rod to fix the fixing insulator, and the guide rod in front of the fixing insulator of the guide rod are installed so as to be movable. A moving insulator that pulls the distribution wire taut, a telescopic corrugated pipe connecting the fixed insulator and the moving insulator, and a driving motor installed in the sag prevention base pipe of Kyungwangeum and receiving power by the operator's operation to generate rotational force , while one side is meshed with the driving gear of the driving motor, the other side is connected to the moving insulator and moves toward the electric pole by the rotational force of the driving motor. While coupled to the periphery of the prevention rod, both sides in the longitudinal direction are respectively fixed to the anti-sag base tube and the fixed insulator of the Kyungwan-Geum to protect the anti-sag rod, and a clamp protection cover installed at the end of the guide rod.

The background technology of the present invention is disclosed in Republic of Korea Patent Publication No. 10-1705344 (published on February 09, 2017, title of the invention: anti-sag device for overhead distribution lines).

The sagging prevention device according to the prior art prevents the sagging of the wire because it requires technical configurations to be installed long in the vertical direction to pull the wire upward because it pulls the wire upward by the technical configurations moving in the vertical direction. Since the size of the device is larger than the set value, it is difficult to reduce the time and cost required for manufacturing the anti-sag device. There is a problem that is difficult to proceed.

Therefore, there is a need to improve it.

The present invention determines that sagging of the cable has occurred when the horizontality of the cable extending from the support of the holding exceeds the set range and is inclined downward, and the cable is wound around a plurality of winding drums to prevent the sagging of the cable, , When the amount of cable wound on the winding drum reaches the set value, it sends a work request to the control unit to provide a sag prevention device for overhead distribution lines that enables tensioning or cable replacement to prevent sagging of cables. There is a purpose.

The present invention, the extension extending toward the cable side from the support installed on the pole; a driving unit installed on the extension and providing power; a winding drum connected to the driving unit so that a cable supported by an insulator installed on the support can be wound; a restraining ring member for maintaining a state in which the cable is in close contact with the winding drum so that the cable is in close contact with the winding drum and wound around a portion of the winding drum when the winding drum is rotated; and a detachable part for removably connecting the restraining ring member to the winding drum.

In addition, the driving unit of the present invention is installed in the bent portion bent from the extension to the cable side, the motor for providing power; a driving shaft protruding from the motor and disposed to protrude from the bottom surface of the bent part to which the winding drum is connected; and a bearing installed in the bent portion so that the driving shaft is rotatably installed in the bent portion.

In addition, the detachable portion of the present invention, a hook member formed on any one of the restraining ring member or the winding drum; a coupling groove formed in the other one of the restraining ring member or the winding drum, into which the hook member is inserted; a locking hook which is installed to protrude into the coupling groove and is engaged with the hook member; and a first elastic member for maintaining the engaging state between the hook member and the engaging hook by pressing the engaging hook in the inner direction of the engaging groove.

In addition, in the present invention, when the winding drum is rotated by the operation of the driving unit, the cable sagging in the downward direction is pulled upward while the cable is wound around the winding drum, and even if the power to the motor is cut off after the pulling operation is completed, the It characterized in that it further comprises a winding holding part for preventing the drive shaft from being reversely rotated and the cable from being unwound from the winding drum.

The anti-sag device for an overhead distribution line according to the present invention is provided with a winding drum that can be pulled up while winding a cable extending from a pole. Since a tensile force is provided while being wound around the winding drum, there is an advantage in that the cable can be prevented from sagging in the downward direction.

In addition, the anti-sag device for overhead distribution lines according to the present invention is provided with a sensing unit that transmits an output signal requesting repair work or cable replacement work to the control unit when the amount of winding of a cable wound on a winding drum exceeds a set value When the cable is wound more than necessary on the drum and there is concern about deformation or damage of the cable, it is possible to determine the timing of pulling up or replacing the cable to correct the sagging of the cable. have.

1 is a block diagram showing an apparatus for preventing sagging for overhead distribution lines according to an embodiment of the present invention.
2 is a block diagram showing a driving unit, a detachable unit, and a winding holding unit of the anti-sag device for an overhead distribution line according to an embodiment of the present invention.
3 is a block diagram showing a winding holding unit of the sagging device for overhead distribution lines according to an embodiment of the present invention.

Hereinafter, an embodiment of the anti-sag device for an overhead distribution line according to the present invention will be described with reference to the accompanying drawings.

In this process, the thickness of the lines or the size of the components shown in the drawings may be exaggerated for clarity and convenience of explanation.

In addition, the terms to be described later are terms defined in consideration of functions in the present invention, which may vary according to intentions or customs of users and operators.

Therefore, definitions of these terms should be made based on the content throughout this specification.

1 is a block diagram showing a sag preventing device for an overhead distribution line according to an embodiment of the present invention, and FIG. 2 is a driving unit, a detachable part and a winding of the sagging preventing device for an overhead distribution line according to an embodiment of the present invention. It is a configuration diagram showing a holding part, and FIG. 3 is a configuration diagram showing a winding holding part of a sagging device for overhead distribution lines according to an embodiment of the present invention.

1 to 3 , the anti-sag device for an overhead distribution line according to an embodiment of the present invention includes an extension 16 extending from the support 12 installed on the pole 10 to the cable side, and the extension The winding drum 30 installed on the stand 16 and connected to the driving unit 36 so that the driving unit 36 providing power and the cable supported by the insulator 14 installed on the support 12 can be wound. And, when the winding drum 30 is rotated, the cable is in close contact with the winding drum 30 and is wound around a part of the winding drum 30 so that the cable is kept in close contact with the winding drum 30, a restraining ring member 32 ) and a detachable part 50 for removably connecting the restraining ring member 32 to the winding drum 30 .

Therefore, when the cable sags more than the set value in the downward direction by the operation of the measuring unit that detects the sagging of the cable, power is applied to the driving unit 36 to rotate the winding drum 30 and to be wound by the restraining ring member 32 . As the cable in close contact with the drum 30 is wound around a portion of the winding drum 30 , a tensile force is provided to the cable, so that the cable is pulled upward.

In FIG. 1 of this embodiment, only one support 12 of a plurality of supports 12 is provided with an extension 16 and a bent portion 18 so that a sagging prevention device is installed, but each support 12 is provided with an extension (16), it is preferable that the bending portion 18 and the anti-sag device are installed, and a plurality of anti-sag devices are driven at the same time to significantly reduce the cable sagging downward even when a small amount of the cable is wound around the plurality of winding drums 30 A striking effect is produced.

The measuring unit of this embodiment may include a laser installed at the bottom of the insulator 14, and the degree of sagging of the cable by the lasers transmitted from a plurality of laser sensors installed at the bottom of the insulator 14 at intervals in the vertical direction. As the cable sags downward, the cable is detected by the laser sensor located at the bottom, so it is possible to measure the degree of sagging of the cable.

Of course, since the laser sensor can be driven by foreign substances contained in the air or animals passing around the electric pole, the cable detected by the laser sensor may sag if more than the set value is detected, for example, 10 times or more per unit time. judge what has happened.

As described above, when the cable is sensed more than 10 times by the laser sensor disposed on the lowermost side during the set time by the operation of the measuring unit, it is determined that the cable has sagging and a driving signal is transmitted from the control unit, so that the operation of the driving unit 36 is affected. As the winding drum 30 is rotated by the rotation of the cable, only a predetermined amount is wound on a portion of the plurality of winding drums 30, and the length of the cable wound around the plurality of winding drums 30 is sufficiently raised upward by the sum of the lengths.

The driving unit 36 of this embodiment is installed on the bent portion 18 bent from the extension 16 to the cable side, and a motor 37 that provides power, protrudes from the motor 37 and the bent portion 18 bottom surface and a drive shaft 38 to which the winding drum 30 is connected and disposed to protrude to and a bearing 39 installed on the bent portion 18 so that the drive shaft 38 is rotatably installed on the bent portion 18 .

Therefore, when power is applied to the motor 37 and the winding drum 30 is rotated in the forward direction, the cable that is in close contact with the winding drum 30 is in close contact with the winding drum 30 while the winding drum 30 is rotated by a predetermined amount. The cable is pulled upwards while winding with

At this time, since the restraining ring member 32 detachably installed on the winding drum 30 surrounds the circumferential surface of the cable and is coupled to the winding drum 30 by the detachable part 50, the cable is separated from the winding drum 30. separation can be prevented.

The detachable part 50 of this embodiment is the other one of the hook member 52 formed on any one of the restraining ring member 32 or the winding drum 30 and the restraining ring member 32 or the winding drum 30 . Formed in the, engaging groove 54 into which the hook member 52 is inserted, and the engaging hook 56 which is installed to protrude into the engaging groove 54, and is engaged with the hook member 52, and the engaging hook It includes a first elastic member 58 for pressing the engaging groove 54 inwardly to maintain the engaging state between the hook member 52 and the engaging hook 56 .

Therefore, when the restraining ring member 32 is rotated around the hinge shaft 34 toward the winding drum 30, the hook member 52 is inserted into the coupling groove 54 and presses the inclined surface of the engaging hook 56 to press the hook member. When the hook member 52 is inserted to the inner end of the coupling groove portion 54, the hook 56 is protruded inward by the restoring force of the first elastic member 58 that was compressed while the hook member 52 is inserted into the coupling groove 54. It is engaged with the member 52 .

After the winding operation as described above is finished, since the reverse rotation of the driving shaft 38 is restricted by the winding holding unit 80, even if the power to the motor 37 is cut off, the driving shaft 38 rotates in the reverse direction and the winding drum 30 ) to prevent a malfunction of the cable from being unwound.

The winding holding part 80 of this embodiment has a gear member 82 installed on the drive shaft 38, and a restraining protrusion ( 84 , and a second elastic member 86 interposed between the restraining protrusion 84 and the bending portion 18 to provide an elastic force for pressing the restraining protrusion 84 toward the gear member 82 .

Since the gear teeth formed on the gear member 82 are inclined in one direction, and the inclined surfaces on which the gear teeth slide are formed on the restraining protrusion 84 to face each other, the restraining protrusion is formed by the elastic force provided by the second elastic member 86 . Even when the gear member 84 is pressed toward the gear member 82, the gear member 82 can be rotated while the inclined surface of the gear teeth slides along the inclined surface of the restraining projection 84 when the gear member 82 is rotated in the forward direction, and the gear member 82 is rotated in the reverse direction. When the gear teeth and the restraining protrusion 84 are engaged with each other when rotated, the reverse rotational movement of the gear member 82 is constrained.

In addition, in this embodiment, when the winding operation of the winding drum 30 is repeated and the rotation amount of the winding drum 30 is rotated exceeding a set value, it is detected and an output signal requesting a repair operation or a cable replacement operation is transmitted. Since the part 90 is further included, it is possible to prevent the cable from being deformed or damaged by being wound more than necessary on the circumferential surface of the winding drum 30 .

The sensing unit 90 of this embodiment is installed on the inner wall of the sensing protrusion 92 installed on the driving shaft 38 and the bent unit 18, and when the driving shaft 38 is rotated to a set angle, the sensing protrusion 92 is in contact. and a touch sensor 94 for outputting a detection signal, and a transmitter 96 for transmitting a detection signal transmitted from the touch detection sensor 94 to the control unit.

Therefore, the winding operation is repeated a number of times, and as the sensing protrusion 92 comes into contact with the contact sensing sensor 94, a sensing signal is transmitted from the transmitting unit 96 to the control unit to inform that the cable repair work or replacement work is required, so the operator is installed on the electric pole The work of raising additional cables or replacing the cables will be carried out.

At this time, the operator operates the detachable release part 70 provided in the detachable part 50 to separate the restraining ring member 32 from the winding drum 30 while releasing the restraint of the cable wound around the winding drum 30 . The cable may be separated from the winding drum 30 .

The detachable release unit 70 of this embodiment includes a release wire 72 extending outside the winding drum 30 from the locking hook 56, and a release lever 74 installed at the end of the release wire 72, and bent and a guide roller 76 installed on the winding drum 30 to rotatably support the extended release wire 72 .

Therefore, when the release lever 74 is pulled by a worker or a tool, the first elastic member 58 is compressed and the locking hook 56 is retracted to release the engagement between the hook member 52 and the locking hook 56. there will be

In addition, in the present embodiment, the unwinding part 87 for releasing the winding state of the winding drum 30 is provided, and the unwinding part 87 is extended from the restraint protrusion 84 to the bent part 18 to the outside. It includes a winding wire 88 and a lever member 89 connected to the winding wire 88 .

Therefore, when the lever member 89 is pulled by the operator's manipulation or a tool, the locking protrusion 84 is retracted while the winding wire 88 is pulled, so that the engagement between the gear member 82 and the restraining protrusion 84 is released. The drive shaft 38 is converted into a state rotatable in the reverse direction.

Accordingly, if the horizontality of the cable extending from the support of the pole exceeds the setting range and is inclined downward, it is determined that the cable sag has occurred, and the cable is wound around the winding drum to prevent the cable from sagging, and to the winding drum. When the amount of winding of the winding cable reaches a set value, it is possible to provide a sag prevention device for overhead distribution lines that transmits a work request to the control unit to perform a tensioning operation or a cable replacement operation to prevent sagging of the cable.

Although the present invention has been described with reference to one embodiment shown in the drawings, this is merely exemplary, and various modifications and equivalent other embodiments are possible by those skilled in the art to which the art pertains. will understand

In addition, although the anti-sag device for overhead distribution lines has been described as an example, this is only exemplary, and the anti-sag device of the present invention may be used for products other than the anti-sag device for overhead distribution lines.

Accordingly, the true technical protection scope of the present invention should be defined by the following claims.

10: support 12: support
14: insulator 16: extension rod
18: bending part 30: winding drum
32: constraining ring member 34: hinge shaft
36: driving unit 37: motor
38: drive shaft 39: bearing
50: detachable part 52: hook member
54: coupling groove 56: engaging hook
58: first elastic member 70: detachable part
72: release wire 74: release lever
76: guide roller 80: winding holding part
82: gear member 84: restraint projection
86: second elastic member 87: unwinding part
88: winding wire 89: lever member
90: sensing unit 92: sensing protrusion
94: touch sensor 96: transmitter

Claims (4)

an extension extending from the support installed on the pole to the cable side;
a driving unit installed on the extension and providing power;
a winding drum connected to the driving unit so that a cable supported by an insulator installed on the support can be wound;
a restraining ring member for keeping the cable in close contact with the winding drum so that the cable is in close contact with the winding drum and wound around a portion of the winding drum when the winding drum is rotated; and
and a detachable part for removably connecting the restraining ring member to the winding drum,
The driving unit,
a motor installed in a bent portion bent from the extension to the cable side and providing power;
a driving shaft protruding from the motor and disposed to protrude from a bottom surface of the bent part to which the winding drum is connected; and
and a bearing installed in the bent portion so that the drive shaft is rotatably installed in the bent portion,
The detachable part,
a hook member formed on either the restraining ring member or the winding drum;
a coupling groove formed in the other one of the restraining ring member or the winding drum, into which the hook member is inserted;
a locking hook which is installed to protrude into the coupling groove and is engaged with the hook member; and
and a first elastic member for maintaining the engaging state between the hook member and the engaging hook by pressing the engaging hook in the inner direction of the engaging groove,
When the winding drum is rotated by the operation of the driving unit, the cable that sags downward while the cable is wound around the winding drum is pulled upward, and even when the power to the motor is cut off after the pulling operation is completed, the drive shaft is reversely rotated and the Further comprising a winding holding part to prevent the cable from being unwound in the winding drum,
When the amount of rotation of the winding drum 30 is rotated to a set angle, it detects this and further includes a detection unit 90 that transmits an output signal requesting repair work or cable replacement work,
The sensing unit 90,
a sensing protrusion 92 installed on the drive shaft 38;
a contact detection sensor 94 installed on the inner wall of the bent portion 18 and contacting the detection protrusion 92 to output a detection signal when the drive shaft 38 is rotated to a set angle; and
Deflection prevention device for overhead distribution line, characterized in that it comprises a transmission unit (96) for transmitting the detection signal transmitted from the touch detection sensor (94) to the control unit.
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