KR102251963B1 - 3-phase live elbow open and closing device - Google Patents

Abstract

The present invention provides a three-phase live wire elbow switchgear in which a three-phase elbow connection material, which is a replacement target installed in a transformer, is separated and inserted individually or simultaneously in a rapid and safe manner. The above objective of the present invention is achieved by the three-phase live wire elbow switchgear, wherein a cylinder support plate (160) screw-coupled with a screw rod (230) moves forward by an operation of a reduction motor (M) of a restraining unit moving unit (200), while a single-phase restraint body (110) matches an elbow reception groove (121) of an elbow binding body (120) at an elbow connection material (E/B), and a front setting ring (150) and a rear friction ring (151) are clamped by operating a setting rod (132) of a block cylinder (130) in a setting adjustment hole (141) of a setting plate (140), three phases of the single-phase restraint body (110) are simultaneously moved forward by an operation of a forward/rearward movement cylinder (170) to receive the elbow connection material (E/B) in the elbow reception groove (121) of the elbow binding body (120), and while horizontal separation to a lower opening (122) caused by a rotation of a binding ring (123) is prevented, three phases of the elbow connection material (E/B) are simultaneously separated and connected by a rearward movement operation of the forward/rearward movement cylinder (170).

Description

3-PHASE LIVE ELBOW OPEN AND CLOSING DEVICE}

The present invention relates to an elbow connector separation and connection device for a ground transformer that safely separates and connects a single-phase or three-phase elbow connector in a state where high-voltage electricity flows, and more particularly, an elbow according to the simultaneous separation and connection of a single-phase or three-phase elbow connector. A three-phase live elbow switchgear that ensures the safety and reliability of the device by eliminating malfunctions due to separation by improving the elbow restraint part according to the simple and convenient setting of the center point between the connector and the bushing of the transformer. It is about.

In general, an underground distribution line is a means of lowering the voltage from 22.9kV supplied through the transmission line from a power plant to a low voltage of 220/380V suitable for various household or industrial facilities when power is supplied to various household or industrial facilities. As a result, a ground-mounted transformer (hereinafter, abbreviated as'transformer') is being used.

Such a transformer should be replaced with a transformer that operates normally when an abnormality (breakdown) occurs in the transformer due to aging or overload. When replacing the old transformer, use an uninterruptible transformer replacement vehicle to connect the power source to the home or office. It is performed by the uninterruptible method of continuously supplying power to customers such as factories, etc., or by replacing the transformer with a normal operating transformer after all the transformers between the switch and the switch are turned off.

In the uninterruptible method of replacing the transformer, the extra high voltage side cable and the low voltage side cable of the transformer are separated and connected to the mobile transformer vehicle in a live state, and the power is continuously supplied and replaced.

As shown in Fig. 1, the transformer 1 is a left/right elbow connector (H1A to H3A) (H1B to H3B) provided at the tip of a cable wired underground to an extra-high voltage side cable (primary side). As shown, the elbow connector in the bushing (B) is in a live state while being connected to the bushing insert (B/I) of each bushing (B) of the transformer (1) having different heights of the three phases. Separated.

In this state, as shown in FIG. 3, a toggle clamp (T) on the junction fixing stand (3) mounted using the parking stand (4) of the transformer (1) with the cable junction (5) connected to one side of the mobile transformer vehicle (1). The remaining left elbow connector (H2A, H3A) is separated into a live state by repeating the process of connecting and separating the left elbow connector (H1A) separated in a live state while temporarily attached to the cable junction (5), The right elbow connectors H1B to H3B are connected to and separated from the insulating plug (SOP: 6) mounted on the parking stand 4 of the transformer 10.

In this temporarily separated state, the elbow connector connected to the cable junction 5 or the insulation plug 6 is separated again and connected to the bushing insert (B/I) of the new transformer. Will be replaced.

In connection with such transformer replacement, the applicant has selected Patent Document 1 (Registration No. 10-0824584), Patent Document 2 (Registration No. 10-842321), and Patent Document 3 (Registration No. 10-1017093). I have been registered.

The applicant of the present invention has a disadvantage in that the source technology requires a lot of work time according to the replacement of the transformer because it is not a separation/injection technology by collectively separating/injecting the three-phase elbow joints, but by separating/injecting each phase.

Thus, recently, as in Patent Documents 4 to 6, devices for simultaneously separating a three-phase elbow connection member from a transformer have been disclosed.

Patent Document 4 (Registration No. 10-072251) separates the three-phase elbow connection member in a state bound together by a fixing frame and a connection plate.

Patent Document 5 (Registration No. 10-1656805) separates one elbow connection member or three elbow connection members at the same time by using three detachable members that individually detach three elbow connection members.

Patent Document 6 (Registration No. 10-1765097) separates the three elbow connecting members in a state locked by a restraining part by a locking member that moves left and right by simultaneously operating the central detachable device and the upper and lower detachable devices.

Patent Documents 4 to 6 described above are in a state in which the body (housing) of the elbow connector is enclosed in a state where the restraining part is wrapped when the three elbow joints are separated at the same time, and the operating ring (clasp) is locked (locked) by the cylinder operation of the locking member. Since the constraining part is separated or inputted by the forward and backward control, there are disadvantages in that it takes a lot of time when the elbow connection member is bound, and the adjustment operation of the constraint part for binding the elbow connection member is complicated.

In addition, when the elbow connector is separated and connected from the transformer, if accurate centering is not performed, sparks, etc., may occur, causing an accident by damaging the contact bar or bushing, or putting the operator at risk.

In particular, the restraint part of the elbow connector is set by coordinate control of each horizontal and vertical control cylinder, so if you are not a skilled engineer who controls the coordinates by electric operation, the elbow connector and the transformer can be adjusted during setting work or input for restraining the elbow connector. The matching work with the bushing was rather cumbersome and difficult.

In addition, the structure of the constraining part that binds each of the three-phase elbow connectors is complex, and the overall weight is large due to the use of a number of constituent members, and there is a disadvantage that it takes a lot of labor due to installation by transporting it to the transformer.

Patent Document 1: Korean Patent Registration No. 10-0824584 (registered on April 17, 2008) Patent Document 2: Korean Patent Registration No. 10-0842321 (registered on June 24, 2008) Patent Document 3: Korean Patent Registration No. 10-1017093 (registered on February 16, 2011) Patent Document 4: Korean Patent Registration No. 10-0722251 (registered on May 21, 2007) Patent Document 5: Korean Patent Registration No. 10-1656805 (registered on September 6, 2016) Patent Document 6: Korean Patent Registration No. 10-1765097 (registered on July 31, 2017)

The present invention was developed to solve the disadvantages of the prior art as described above, and the three-phase live line elbow switching device of the present invention is an elbow according to the simultaneous separation of the three-phase elbow connector from the transformer and the simultaneous input according to the connection with the transformer. It is to provide a safe operation in the state that the joint material is reliably bound.

In addition, an object of the present invention is the simultaneous separation and simultaneous input of the three-phase elbow connector, and the input and setting work between the three-phase elbow connector and the bushing of the transformer in a bound state is simple and quick, so that it is possible without a skilled worker. It is to provide a three-phase live line elbow opening and closing device that guarantees the convenience of use.

An object of the present invention is to provide a simple structure to safely separate and connect the three-phase elbow connector connected to the transformer, and at the same time, it is possible to secure safety by providing fast and solid binding with each elbow connector to be separated by simple operation. It is to provide a three-phase live line elbow opening and closing device.

In order to achieve the above object, in the three-phase live line elbow opening and closing device of the present invention,

The setting adjustment hole corresponding to the three-phase elbow connector or the connection bushing of the transformer penetrates in an X-shaped cross state, and is supported by an expansion flange larger than the diameter of the setting adjustment hole and freely moves to the shaft bush of a small diameter. A front setting ring disposed in a state capable of being able to move, a front setting ring disposed in a state capable of free axial movement with a small-diameter shaft bush in a state supported by an expansion flange in front of the setting adjustment hole, and the rear of the setting adjustment hole A setting plate provided with a rear friction ring disposed on the,

An elbow binding body, the elbow binding body provided with an elbow repair groove having a lower opening to accommodate the elbow connector, and having a binding ring closing the front opening of the lower opening by rotation in front of the outer circumferential surface of the elbow connection It is assembled at the rear of the front setting ring and the rear friction ring by a fixing nut screwed from the rear friction ring side in a state where the shaft is assembled with a setting rod, without the horizontal shaft being removed, and one side of the front setting ring. And a spacer of a hollow pipe interposed between the front end of the block body and inserted into the outer circumferential surface of the setting rod, and installed in a state where the expansion flange of the front setting ring is supported in the front of the setting adjustment hole and maintained at a distance. Single-phase confinement for each phase composed of one block cylinder,

A pair of forward and backward moving cylinders for moving the setting plate forward and backward, assembled as a cylinder body on the cylinder support plate disposed at the rear of the setting plate and connected by a cylinder rod,

3 consisting of a front support plate arranged from the front with an opening through which the setting plate passes and a pair of locking pieces are provided at the top, and slide guides to a guide bush assembled at four corners of the cylinder support plate by four guide rods. Upper elbow restraints; And,

A rear support plate disposed at the rear of the cylinder support plate and assembled with the ends of the four guide rods, a motor plate and a finish cover plate fixed to the middle and end of the four fixing rods fixed to the four corners of the rear support plate, the A reduction motor assembled on a motor plate, a driving pulley of the reduction motor and an interlocking pulley driven by a belt, penetrate the motor plate and the rear support plate, assemble the screw nut assembled on the cylinder support plate, and pass through the setting plate. A restraining part moving part configured as a screw rod to be installed to move the cylinder support plate 160 screwed with the screw rod forward and backward by the operation of the reduction motor;

It characterized in that it comprises a.

According to the present invention, when an uninterruptible replacement of a transformer is performed, a quick phase-by-phase setting according to the replacement and separation of the three phases of the elbow connector to be replaced and the elbow connector to be input is provided, thereby providing a convenient advantage.

In addition, according to the present invention, there is an advantage of providing a safe operation without malfunction during separation due to solid binding with the elbow connection member.

In addition, according to the present invention, there is an advantage in that complicated use is eliminated by simplification of component parts, and the labor of installation can be reduced as much as possible by reducing the weight of the device.

1 is a front view showing an extra-high voltage cable connection structure of a transformer.
FIG. 2 is an excerpted side view showing a connection state of an elbow connector and a bushing insert of a bushing connected to a transformer in FIG. 1.
3 is an excerpt illustrating an installation state of a junction and an insulation plug in a transformer.
4 is an exploded perspective view illustrating assembly of a vertical/horizontal moving frame installed on the front side of a transformer according to the installation of a three-phase live line elbow switching device to which the present invention is applied.
5 is a perspective view of an installation state of a three-phase live line elbow switch to which the present invention is applied to a vertical/horizontal moving frame installed on the front side of a transformer.
6 is a perspective view of a three-phase live line elbow opening and closing device to which the present invention is applied.
7 is an exploded perspective view of a three-phase live line elbow opening and closing device to which the present invention is applied.
8 is an enlarged view of the excerpt of FIG. 7 and is an exploded perspective view of an elbow restraint portion of the present invention.
9 is an exploded perspective view of an excerpt of a single-phase restraint constituting an elbow restraint of the present invention.
10 is an exploded perspective view of an excerpt illustrating an assembly state of an elbow binding body and a binding ring, which are components of the present invention.
Fig. 11 is an exploded perspective view illustrating binding with an elbow connecting member viewed from the front direction of a single-phase restraint constituting the present invention.
12 is an excerpted cross-sectional view illustrating the free shaft center movement when the setting rod of the single-phase constrainer constituting the present invention is axially assembled to the front setting ring in the setting adjustment hole of the setting plate.
13 is a state diagram of the elbow binding body of the single-phase restraint of the present invention and the elbow connecting member before setting on the center line.
14 is an enlarged view of an excerpt of “F” in FIG. 13.
15 is a state diagram of the elbow binding body and the elbow connecting member of the single-phase constraining body of the present invention after setting on the center line.
FIG. 16 is an enlarged view of the “G” part of FIG. 13, and FIG. 17 is a state diagram after setting by pulling the cylinder rod of the block cylinder in the state of FIG.
18 is a perspective view of a state in which the elbow connector is accommodated in the receiving groove of the elbow binding body according to the operation of the present invention.
Figure 19 is a perspective view of the rotation setting state of the binding ring in the state inserted into the receiving groove of the elbow binding body of the present invention.

Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

In the description of the present invention, the structure and size of the components shown in the drawings may be simplified or simplified unless there is a problem in the description of the invention.

4 and 5 shows a state of use according to the use of the three-phase live line elbow opening and closing device of the present invention.

That is, FIG. 4 is an exploded perspective view illustrating the assembly of the vertical/horizontal moving frame 10 installed on the front side of the transformer (T/R) according to the installation of the three-phase live line elbow switching device to which the present invention is applied, and FIG. 5 Is a perspective view of the installation state on the vertical/horizontal moving frame 10 installed in the front of the transformer (T/R).

Referring to these drawings, the vertical/horizontal moving frame 10 is installed on the front side of the transformer T/R.

The vertical/horizontal movable frame 10 is horizontally movable in the vertical movement inner frame 21 and the vertical guide frame provided with vertical movement by ball screws 12 assembled on both front sides of the square frame body 11. A horizontal inner plate 22 is provided.

The square frame body 11 has a pair of locking pieces assembled on the upper side of the vertical frame body on both sides, each of which is supported while being held on the upper part of the transformer (T/R), at the top, and the balls on both sides The screw 12 is each screw nut 14 which vertically moves by the vertical control motor operation of an interlocking sprocket installed in the enclosure 15 on the upper frame of the square frame 11 and a driving sprocket installed in a chain drive mechanism. In the vertical motion inner frame 21 is assembled, the vertical motion inner frame 21 is guided by the vertical LM guide guide rail 16 to move up and down.

And the vertical motion inner frame 21 is a screw of the ball screw 27 screwed by the drive pulley 26 of the horizontal control motor 25 installed at the bottom and the interlocking pulley 28 interlocked with the belt (B). The horizontal moving inner plate 22 assembled to the nut is guided by the horizontal LM guide guide rail 29.

This vertical/horizontal moving frame 10 is to install the present invention on a transformer (T/R) to position the horizontal moving inner plate 22 at a corresponding position of the elbow connector (E/B) for replacement or new construction. It will be understood that it is sufficient to omit the detailed description as it has already been suggested in the source technology as an equipment of one medium for the purpose.

Of course, the horizontal transfer inner plate 22 is formed in correspondence with the opening 23 so that there is no limit to the forward and backward movement of the three-phase elbow restraining unit 100 constituting the three-phase live line elbow opening and closing device of the present invention to be described later.

The three-phase live line elbow opening and closing device of the present invention is shown in detail in FIGS. 6 to 12.

6 to 8, the present invention is an elbow binding body 120, a block cylinder 130, a single-phase restraint body 110 for each phase including a setting plate 140, and a forward and backward moving cylinder 170, The three-phase elbow restraint portion 100 including the front support plate 180 and the three-phase elbow restraint portion are largely divided into a restraining portion moving portion 200 that moves forward and backward.

The elbow binding body 120 constituting the three-phase elbow restraint portion 100 is installed in a transformer (T/R) or has a lower opening 122 to accommodate a new elbow connector (E/B). 121 is formed, and a binding ring 123 for closing the front opening of the lower opening 122 by rotation in front of the outer peripheral surface of the el maintenance groove 121 is provided.

In other words, the binding ring 123 assembled to the elbow binding body 120 is the upper portion of the cable receiving portion (E/B-1) of the insulating housing constituting the elbow connecting member (E/B) and the bushing coupling portion ( E/B-2) The voltage detection unit (E/B-3) provided at the rear and the rear opposite to the bushing coupling unit accommodates the lower opening 122 and is attached to the binding ring 123 when detached by horizontal movement. Accordingly, it is possible to block the cable receiving portion E/B-1 from being removed through the lower opening 122.

9 to 12, the binding ring 123 is fitted into the ring groove 120a formed on the front outer circumferential surface of the elbow binding body 120, and the ring groove 120a in the front of the binding ring 123 ) Is made to be blocked by the snap ring 124 fitted in, and the binding ring 123 is assembled in a state in which an opening is formed larger than the width of the lower opening 122.

In addition, the binding ring 123 may be set by temporarily fixing a rotating state by installing a ball plunger 125.

In the ball plunger 125, a part of the ball is elastically installed to the inner circumferential surface, and the lower opening 122 is set by rotation in which the ball exposed to the stopping groove 120b provided in the annular groove 120a is engaged. Closed.

The block cylinder 130 is assembled with a block body 131 at the rear end of the elbow binding body 120 and is provided with a setting rod 132 extending rearward at a predetermined distance.

At this time, the setting rod 132 is a front setting ring 150 disposed at the rear of the setting adjustment hole 141 of the setting plate 140 and the setting adjustment in a state in which the spacer 133 of the hollow tube is assembled on the outer circumferential surface. Through the rear friction ring 151 disposed at the rear of the hole, the threaded portion 132 and the fixing nut 152 at the end are screwed.

The setting adjustment hole 141 of the setting plate 140 is penetrated in an X-shaped cross state corresponding to the three-phase elbow connection member or connection bushing of the transformer.

And the front setting ring 150, which is shaft-assembled through the setting rod 132, is supported by an expansion flange 150b larger than the diameter of the setting adjustment hole 141 and has a small diameter shaft bush ( 150a), and as shown in FIG. 12, the setting adjustment hole 141 is disposed in a state capable of free axial movement (±10 mm range from the center point), and the rear friction ring 151 is also The size of the expansion flange 150b of the front setting ring 150 is shaft-assembled to the setting rod 132 in a state disposed at the rear of the setting adjustment hole 141 to constitute a phase-by-phase single-phase restraint body 110.

Here, the phase-by-phase single-phase restraint body 110 is assembled at the rear of the elbow binding body 120, and the front setting ring 150 and the rear friction ring 151 are axially assembled with a setting rod 132, and the It is assembled without a horizontal shaft by a fixing nut 152 that is screw-assembled from the rear friction ring 151 side, and the spacer is provided between one side of the front setting ring 150 and the front end of the block body 131 ( 133 is installed to be spaced while supporting the expansion flange 150b of the front setting ring 150.

And the block cylinder 130 is the rear friction ring 151 is compressed to the rear surface of the setting plate 140 by the pulling of the setting rod 132, and at the same time, the expansion flange 150b of the front setting ring 150 The front side is closely supported to the front end of the spacer 133 so that the axial center setting of the elbow binding body 120, that is, can be fixed on the center line of the bushing coupling portion E/B-2 of the elbow connector (E/B). have.

It is preferable that the front setting ring 150 and the rear friction ring 151 are formed of a resin material having a friction sound or adhesion strength according to the movement of the axis of the setting rod 132.

Meanwhile, the shaft bush 150a of the front setting ring 150 directly contacts the setting adjustment hole 141 according to the forward and backward movement of the setting rod 132 of the block cylinder 130 to prevent wear. It is reasonable to understand that it is constituted.

In addition, the single-phase restraint body 110 for each phase is assembled as a cylinder body to the cylinder support plate 160 disposed at the rear of the setting plate 140 and connected by a cylinder rod 171, a pair of forward and backward moving cylinders 170 ) To move forward and backward.

In front of the setting plate 140, a horizontal movement that moves horizontally from the front of the inner frame 12 while the vertical movement operates in the vertical/horizontal movement frame 10 temporarily mounted on the front of the transformer (T/R). A front support plate 180 mounted on the guide plate 22 is provided.

The front support plate 180 has an opening 181 through which the setting plate 140 passes, corresponding to the opening 23 of the horizontal inner plate 22, and a pair of a pair provided at the upper end of the horizontal inner plate 22. It is supported by a pair of locking pieces 182 mounted in the locking groove 25 in a locking state, and the lower end is attached to the'b'-shaped locking hook 24 provided on the lower front surface of the horizontal inner plate 22. By this, it is mounted in a bound state without supporting vertical load and front lifting (see FIGS. 4 and 5).

At this time, as a quadrangular plate body of the front support plate 180 and the cylinder support plate 160, the four guide rods 183 are connected to each other at the corners, and the cylinder support plate 160 is a guide assembled at four corners. It is assembled to be able to slide forward and backward with the bush 161.

The guide bush 161 is assembled so that the outer circumferential surfaces of the four guide rods 183 can be slidably moved, so that a synthetic resin ring or a resin ring is inserted inside the metal ring to accompany the purpose of replacement according to friction noise or long-term use. It is possible to minimize the wear of the guide rod 183.

The restraining part moving part 200 is configured at the rear of the cylinder support plate 160 to control the three-phase elbow restraining part 100 forward and backward.

That is, as the operating distance of a pair of forward and backward moving cylinders 17 provided on the cylinder support plate 160, an elbow connector connected to the transformer (T/R) by the single-phase constrainer 110 for each phase (E/ It controls the movement of the separation of B) or the new elbow connector (E/B) bound to the elbow binding body 120 to the input distance to the connection bushing of the transformer (T/R).

The restraining part moving part 200 is provided with the rear support plate 210 assembled with the ends of the four guide rods 183 passing through the guide bushes 161 provided at the corners of the cylinder support plate 160, The finishing cover plate 240 is assembled at the ends of the four fixing rods 240 fixed to the four corners of the rear support plate 210.

At this time, between the rear support plate 210 and the finish cover plate 240, the motor plate 220 is fixed to the four fixing rods 240 in a shaft-fixed state in the through-holes of the four corners, and the motor plate 220 The reduction motor (M) assembled in the motor, the drive pulley (M-1) assembled in the reduction motor (M), and the screw rod (230) assembled with an interlocking pulley (232) driven by the belt (B) The screw nut 231 assembled to the cylinder support plate 160 and the screw nut 231 assembled to the cylinder support plate 160 through the penetration through the plate 220 and the rear support plate 210 and are installed through the setting plate 140.

The restraining part driving part 200 moves the cylinder support plate 160 screwed with the screw rod 230 forward and backward by the operation of the reduction motor M, so that the cylinder support plate 160 and the front support plate The three-phase elbow restraints 100 of the single-phase restraints 110 for each phase configured in the setting plate 140 between 180 may be moved forward and backward.

It will be described in detail with respect to the operation according to the embodiment of the present invention.

That is, the present invention, as described above, in a state where the front support plate 180 is mounted on the horizontal transfer inner plate 22 of the vertical/horizontal moving frame 10 by the control of the restriction unit driving unit 200 Under the control of 200, the three-phase elbow restraining unit 100 is moved forward.

In other words, the cylinder support plate 160 screwed with the screw nut 231 to the screw rod 230 is moved forward by the operation of the reduction motor M, and the cylinder support plate 160 is located at four corners. The operating distance of the cylinder rod 171 of the pair of forward and backward moving cylinders 170 assembled on the cylinder support plate 160 by sliding the guide rod 183 through the shaft through the installed guide bush 161, That is, as the operating distance of the setting plate 140 fixed to the end of the cylinder rod 171, it moves forward to the operating distance of the single-phase restraint body 110 for each phase.

In this state, as shown in Figure 13, as shown in Figure 15, in a state in which the center lines (C1, C2) of the single-phase restraint 110 and the corresponding elbow connector (L/B) are inconsistent, as shown in Figure 15, the single-phase restraint 110 for each phase ), the center line (C2) of the elbow binding body 120 and the elbow connector (E/B) and the center line (C1) are aligned and set.

In this process, as shown in the enlarged view of FIG. 14, the operator moves the elbow binding body 120 to move the setting rod 132 of the block cylinder 130 to the setting adjustment hole of the setting plate 140 ( 141), it is adjusted by moving the shaft center.

Of course, in this state, as shown in FIG. 15, free axial movement in the setting adjustment hole 141 of the setting plate 140 together with the front setting ring 150 and the rear friction ring 151 assembled on the setting rod 132 Adjust.

This free axial movement is a state in which the front setting ring 150 and the rear friction ring 151 are slidable on the front and rear surfaces of the setting plate 140, so that the setting rod 132 is not rigidly bound, that is, the pulling operation of the setting rod 132 This is possible because is not provided.

In this state, as shown in the enlarged view of FIG. 16, the setting rod 132 is pulled by the operation of the block cylinder 130.

As a result, the fixing nut 152 screwed to the threaded portion 132a of the setting rod 132 moves backward while pulling the rear friction ring 151 and presses it, and the front setting ring 150 is The expansion flange 150b is closely supported at the front end of the spacer 133 shaft-assembled on the outer circumferential surface of the setting rod 132, and as shown in the enlarged view of FIG. 16, the front of the setting adjustment hole 141 of the setting plate 140 ,The front setting ring 150 and the rear friction ring 151 are crimped and clamped at the rear, so that the axial center setting of the elbow binding body 120 is fixed.

Of course, in a state in which all three phases are performed, the setting plate 140 assembled on the cylinder rod 171 is operated forward by the operation of the cylinder 170 moving forward and backward of the cylinder support plate 160.

With this operation, as shown in FIG. 18, the elbow connection member (E/B) is accommodated in the elbow repair groove 121 of the elbow binding body 120 for each phase.

In this state, as shown in FIG. 19, the inlet of the lower opening 122 is closed by rotating the binding ring 123 in a state accommodated in the elbow repair groove 121 of the elbow binding body 120.

Specifically, the single-phase constraining body 110 for each phase constituting the three-phase elbow constraining part 100 is the elbow-binding body 120 is a cable receiving part (L/B) of the insulating housing constituting the elbow connecting material (L/B). -1) The upper and lower bushing coupling part (L/B-2) and the voltage detection part (L/B-3) provided at the rear of the opposite side of the bushing coupling part are inserted into the elbow maintenance groove ( 121), and the binding ring 123 is rotated to close the lower opening 122 of the front of the cable receiving portion (L/B-1), and the forward and backward moving cylinder 170 By reversing the setting plate 140 assembled on the cylinder rod 171 by the reverse operation of, the three-phase elbow connector (E/B) is removed at once,

After the three-phase elbow restraining part 100 is moved backward by the operation of the restraining part moving part 200, the elbow connecting material (E/B) for each phase of the new target is removed from the state of separating the elbow connecting material (E/B) to be replaced. After binding to the elbow binding body 120, it is replaced by inserting it into the bushing of the transformer (T/R) in the reverse order of the above operation.

Briefly summarizing the operation of the present invention, the cylinder support plate 160 screwed with the screw rod 230 is moved forward by the operation of the reduction motor M of the restraining part moving part 200, and the single-phase restraint Match the sieve 110 to the elbow connector (E/B) to be replaced with the elbow repair groove 121 of the elbow binding body 120, and the block cylinder in the setting adjustment hole 141 of the setting plate 140 ( In a state in which the setting rod 132 of 130) is operated to clamp the front setting ring 150 and the rear friction ring 151, the three-phase single-phase constrainer 110 is removed by the operation of the forward and backward moving cylinders 170. Simultaneously advances to accommodate the elbow connector (E/B) in the elbow repair groove 121 of the elbow binding body 120, and blocks the horizontal dropout to the lower opening 122 by the rotation of the binding ring 123. At the same time, the three-phase elbow connector (E/B) to be replaced is simultaneously separated by the reverse operation of the forward and backward moving cylinders 170 again in the state,

A state in which a three-phase elbow connector to be replaced is bound to the elbow binding body 120 of the single-phase constrainer 110 for each phase when the transformer (T/R) is inserted into the bushing according to the replacement of the newly established elbow connector (E/B). The cylinder support plate 160 is moved forward by the screw rod 230 rotated by the operation of the reduction motor M, and a new elbow connector (E/B) bound to the single-phase restraint body 110 In a state that coincides with the center point of the bushing of the transformer (T/R), the setting rod 132 of the block cylinder 130 is pulled back through the setting adjustment hole 141 of the setting plate 140, and the front setting ring ( 150) and the rear friction ring 151 are set by crimping clamping on the front and rear surfaces of the setting adjustment hole 141 of the setting plate 140 with the cooperation of the fixing nut 152 and the spacer 133, and move forward and backward. It is possible to simultaneously advance and insert the single-phase restraints 110 for each phase by the forward motion of the cylinder 170, and then replace them with the reverse motion of the forward and reverse moving cylinder 170 and the reverse motion of the restraint moving part 200.

As described above, the three-phase live line elbow opening and closing device according to the present invention has the advantage of being able to quickly and safely replace the elbow connecting member (E/B) to be replaced.

In addition, there is an advantage that the operator can conveniently use the shaft center fixing operation is provided by a simple setting operation.

The present invention has been described with reference to an embodiment illustrated in the drawings, but is not limited to the embodiment, and can be carried out with modifications and variations without departing from the gist of the present invention, and the modifications and variations are made in the spirit of the present invention. Included.

The present invention makes it possible to easily replace switchgear and transformers and diagnose VLF by safely disconnecting and connecting the elbow connector from the ground transformer even in a live wire state where electricity is supplied. It can be very useful in the industry by making it possible to perform it properly.

100: three-phase elbow restraint 110: single-phase restraint
120: elbow binding body 121: elbow repair groove
122: lower opening 123: binding ring
124: snap ring 125: ball plunger
130: block cylinder 131: block body
132: setting rod 133: spacer
140: setting plate 141: setting adjustment hole
150: front setting ring 150a: shaft bushing
150b: expansion flange 151: rear friction ring
152: fixing nut 160: cylinder support plate
161: guide bush 170: forward and backward moving cylinder
171: cylinder rod 180: front support plate
181: opening 182: locking piece
183: guide rod
200: restraint part moving part 210: rear support plate
220: motor plate 230: screw rod
231: screw nut 232: interlocking pulley
M: reduction motor M-1: drive pulley

Claims (7)

The setting adjustment hole 141 corresponding to the three-phase elbow connector or the connection bushing of the transformer penetrates in an X-shaped cross state, and is supported by an expansion flange 150b larger than the diameter of the setting adjustment hole 141. A setting plate provided with a front setting ring 150 disposed in front of the shaft bush 150a having a small diameter, and a rear friction ring 151 disposed at the rear of the setting adjustment hole 141 (140) Wow,
The elbow connector (E/B) is formed with a lower opening (122) for an elbow repair groove (121) is formed, the front side of the lower opening (122) by rotation in front of the outer circumferential surface of the elbow connector (121) An elbow binding body 120 provided with a binding ring 123 that closes the opening, and a setting rod assembled at the rear of the elbow binding body 120 and on the front setting ring 150 and the rear friction ring 151 ( In the state of being shaft-assembled to 132, it is assembled without horizontal shaft dropping by a fixing nut 152 that is screw-assembled from the rear friction ring 151 side, and one side of the front setting ring 150 and the block body 131 ) Interposed between the front end of the setting rod 132 in a state of being fitted to the outer circumferential surface of the setting rod 132 and supporting the expansion flange 150b of the front setting ring 150 in front of the setting adjustment hole 141 A single-phase constrainer 110 for each phase composed of a block cylinder 130 having a spacer 133 of a hollow tube installed as a retainer,
A pair of forward and backward moving cylinders for moving forward and backward the setting plate 140 assembled as a cylinder body on the cylinder support plate 160 disposed at the rear of the setting plate 140 and connected to the cylinder rod 171 ( 170) and,
The opening 181 through which the setting plate 140 passes and a pair of locking pieces 182 are provided at the top and are disposed from the front side, and the corner of the cylinder support plate 160 by four guide rods 183 A three-phase elbow restraining part 100 composed of a front support plate 180 that slides to guide bushes 161 assembled at four parts; And,
The rear support plate 210 is disposed at the rear of the cylinder support plate 160 and assembled with the ends of the four guide rods 183, and four fixing rods 240 fixed to the four corners of the rear support plate 210 The motor plate 220 fixed to the middle and end of the end cover plate 240 are assembled, the reduction motor (M) assembled to the motor plate (220), the driving pulley (M-1) of the reduction motor (M) ) And a belt (B) with an interlocking pulley 232 driven by the motor plate 220 and the rear support plate 210, and screw nut 231 assembled to the cylinder support plate 160 and screw assembly, Consisting of a screw rod 230 installed through the setting plate 140, the cylinder support plate 160 screwed with the screw rod 230 by the operation of the reduction motor M is moved forward and backward. The restraint part moving part 200 to make;
Three-phase live line elbow opening and closing device comprising a.
The method of claim 1,
The elbow binding body 120 of the three-phase elbow constraining portion 100 includes an upper portion of the cable receiving portion (L/B-1) of the insulating housing constituting the elbow connecting member (L/B) and the bushing coupling portion (L/B). -2) The voltage detection unit (L/B-3) provided at the rear and the rear opposite to the bushing coupling unit is accommodated in the elbow maintenance groove 121 by the front and lower openings 122, and the elbow binding body 120 ), the binding ring 123 is configured to close the lower opening 122 of the front side of the cable receiving part (L/B-1) by rotation to prevent the binding ring from being removed by the horizontal movement. A three-phase live line elbow switch.
The method of claim 1 or 2,
The binding ring 123 is fitted in an annular groove 120a formed on the front outer circumferential surface of the elbow binding body 120 with an opening formed larger than the width of the lower opening 122, and the binding ring 123 A three-phase live line elbow opening and closing device, characterized in that it is installed in a state that is cut off by a snap ring 124 fitted in the ring groove (120a) in the front of the.
The method of claim 3,
The binding ring 123 includes a ball plunger 125 in which a part of the ball is elastically installed on the inner circumferential surface of the ring body 123a and is exposed, so that the ball exposed to the stopping groove 120b provided in the ring groove 120a is A three-phase live line elbow opening and closing device, characterized in that the lower opening (122) is blocked by the closed section of the ring body (123a) and the rotational state is temporarily fixed.
The method of claim 1,
When the elbow binding body 120 is pulled by the setting rod 132 of the block cylinder 130, the rear friction ring 151 is compressed to the rear surface of the setting plate 140 by the fixing nut 152. The front setting ring 150 and the rear friction ring 151 adjust the setting of the setting plate 140 as the front of the expansion flange 150b of the front setting ring 150 is in close contact with the front end of the spacer 133 Three-phase live line elbow opening and closing device, characterized in that clamping to the front and rear surfaces of the shaft hole 141 to fix the setting state of the shaft center.
The method of claim 1,
The shaft bush (150a) of the front setting ring 150 is configured to prevent abrasion by contacting the setting adjustment hole 141 according to the forward and backward movement of the setting rod 132 of the block cylinder 130 Three-phase live line elbow switchgear.
The method of claim 1,
The front setting ring 150 and the rear friction ring 151 are formed of an insulating synthetic resin material that guarantees friction according to surface contact with the surface of the setting plate 140 made of a metal material. Device.

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