KR102144016B1 - Actuator for electric power switch - Google Patents

Abstract

Disclosed is an actuator for switching electric power. According to an embodiment of the present invention, an actuator for switching electric power includes an input shaft, a first spiral spring having an inner support part and an outer support part, an inner winding support member to support the inner support part of the first spiral spring by hanging the inner support part of the first spiral spring, and an extension part extending in a radial direction, an output rotational member including a shaft connection part formed at the center thereof and connected to the output shaft, provided at an end portion of the extension part extending in the radial direction, supporting the outer support part of the first spiral spring by hanging the outer support part of the first spiral spring at one side thereof in a rotational direction, and supporting the extension part of the inner winding support by hanging the extension part of the inner winding support at an opposite side in the rotational direction, a first latch and a second latch installed at opposite sides of the output rotational member, a plurality of latch locking units spaced apart from each other in the rotational direction of the output rotational member such that the first latch or the second latch is locked, a winding control member including a winding control step rotating together with the input shaft, supporting the outer support part of the first spiral spring by hanging the outer support part of the first spiral spring at one side in the rotational direction, and supporting the extension part of the inner winding support member by hanging the extension part of the inner support member at the opposite side in the rotational direction, an unlocking part provide in the winding control member to selectively unlock the locking of the first latch or the second latch, a driving unit rotating the input shaft, a second spiral spring accumulating rotational energy for emergency opening, and a restriction device restricting the second spiral spring in the state that the rotational energy is accumulated and unlocking the locking of the second spiral spring when a fuse striker is stricken.

Description

Operation device for power switch {ACTUATOR FOR ELECTRIC POWER SWITCH}

The present invention relates to an operating device for a power switch that operates a power switch that blocks or connects a power line.

The power switch may be installed on a line that transmits power from a supply side that supplies power such as a substation to a load side that consumes power such as a factory or a house, and may supply or cut off power through input or opening.

The power switch can prevent an electric accident by opening the line when the power state of the load side is unstable. In addition, when maintenance of the load-side line or the load-side electrical equipment is required, the line can be opened to ensure the stability of work. The power switch can reconnect the lines on the supply side and the load side after maintenance is completed.

A typical power switch may include a stator connected to a supply side line, a mover connected to a load side line, and an insulating arm connected to the mover. The operating device for operating such a power switch implements power supply and interruption by inputting or opening the mover in a manner of moving forward or backward.

Republic of Korea Patent Publication No. 10-1247736 (2013.03.26. Announcement) and 10-1678002 (2016.11.21. Announcement) propose operating devices for operating the power switch. These operating devices employ tension springs and link mechanisms in order to implement quick closing and opening operations.

However, since such a power switch operation device employs a long tension spring and a link mechanism, it is difficult to apply it to a variety of power facilities due to the large size of the device as well as a complicated mechanical configuration.

Korean Registered Patent Publication No. 10-1247736 (announced on March 26, 2013) Korean Patent Publication No. 10-1678002 (announced on November 21, 2016)

An aspect of the present invention is to provide an operating device for a power switch capable of stably implementing an instantaneous input operation and an opening operation while miniaturizing the device, and maintaining a stable connection of the power switch after the input.

Another aspect of the present invention is to provide an operating device for a power waste machine capable of quickly opening a power switch when a fuse is blown.

According to an aspect of the present invention, the input shaft; A first spiral spring installed outside the input shaft and having an inner support portion and an outer support portion; An inner winding support member having a spring support portion installed so that a rotation center coincides with the input shaft and supporting the inner support portion of the first spiral spring and an extension portion extending in a radial direction; The rotation center is installed to coincide with the input shaft, has a shaft connection part connected to the output shaft in the center, is provided at the end of the extension part extending in the radial direction, and the outer support part of the first spiral spring is hooked and supported on one side in the rotation direction. An output rotating member having a locking protrusion on the other side in the rotation direction and supported by the extension part of the inner winding support member; First and second latches respectively installed on both sides of the output rotation member so as to limit rotation in the input direction and the rotation in the opening direction of the output rotation member, respectively; A plurality of latch engaging portions fixed at positions spaced apart from each other in the rotation direction of the output rotating member so that the first latch or the second latch can be caught; It is fixed to the input shaft so as to rotate with the input shaft, is provided at an end spaced apart in a radial direction, and is supported by hanging the outer support part of the first spiral spring on one side in the rotation direction, and the extension part of the inner winding support member on the other side in the rotation direction. A winding control member having a winding control jaw to be; A locking release part provided on the opposite side of the winding control jaw of the winding control member and releasing the locking of the first latch or the second latch according to rotation; A driving unit that rotates the input shaft in an input direction or an open direction; A second spiral spring for accumulating rotation energy for emergency opening when the input shaft rotates in the input direction; And a restraining device for restraining the second spiral spring in a state of accumulation of rotational energy, and releasing restraint of the second spiral spring by a blow of a fuse striker when the fuse is blown so that the input shaft rapidly rotates in the open direction. An operating device for a power switch including may be provided.

The operation device for the power switch is rotatably supported in the center of the input shaft, and accommodates the winding control member, the first spiral spring, the inner winding support member, and the output member, and one end in the axial direction is opened. Cylindrical housing; And a ring member installed on the open end side of the housing and supporting the plurality of latches.

The plurality of latch engaging portions are installed outside the ring member, and one end of the first latch and the second latch is rotatably supported by the output rotating member, and each free end is externally supported by the elasticity of the torsion spring. Can be unfolded in any direction.

The locking releasing unit includes a first locking releasing unit for releasing the locking of the first latch when the winding control member rotates in the input direction; And a second disengagement part which releases the second latch when the take-up control member rotates in the open direction.

The drive unit is fixed to the input shaft, rotates the input shaft by rotation, and a rotation cam having a cam protrusion protruding in a radial direction; A spiral transfer shaft provided at a position close to the rotation trajectory of the cam protrusion; A moving member that is coupled to the spiral transfer shaft and rotates the rotation cam in one direction or in a reverse direction for a set section in a manner that rotates the cam protrusion while moving by the rotation of the spiral transfer shaft; And a driving motor that rotates the helical transfer shaft in one direction or in a reverse direction.

The second spiral spring is installed outside the input shaft, an outer end is fixed to the frame, and an inner end may be coupled to a rotating bush rotatably supported on an outer surface of the input shaft.

The restraint device has a central portion fixed to the rotating bush, and a first engaging portion is provided on the side so that it can be rotated in the input direction by being caught by a take-up lever rotating together with the input shaft. A rotating plate provided with a second locking part on; A third latch that is rotatably installed outside the rotating plate and rotates so as to be caught by the second locking part; A cam groove which is rotatably installed on the outer periphery of the rotating plate in a state parallel to the input shaft, and which restrains the third latch or releases the restraint of the third latch while the third latch is engaged with the second locking part. A restraint control shaft that is provided and rotates in a direction to restrain the third latch; And an operation cam that is fixed to the restraint control shaft and rotates the restraint control shaft in a restraint release direction when hit by the fuse striker.

The operation device for the power switch includes a link device for releasing the second latch by interlocking with the operation of the restraint control shaft to allow rotation of the output rotation member in the open direction when the restraint control shaft rotates in the restraint release direction. It may contain more.

The link device includes a drive link mounted on the restraint control shaft; A driven link installed adjacent to the second latch and releasing the second latch by rotation; And a connection link for transmitting the rotation of the driving link to the driven link.

The third latch includes a rotation support part rotatably supported on a support shaft parallel to the restraint control shaft; A roller member provided at a position spaced apart from the rotation support part in a radial direction and caught on the second locking part; And a locking part spaced apart from the rotation support part and the roller member and caught in the cam groove of the restraint control shaft.

In the operating device for a power switch according to an embodiment of the present invention, since the means for accumulating rotational energy for the instantaneous closing operation and the instantaneous opening operation is composed of one first spiral spring, the operating device is more compact and stable than the conventional one. And open operation can be implemented.

In the operation device for a power switch according to an embodiment of the present invention, when the input shaft rotates in the input direction, the second spiral spring accumulates rotational energy, and when the fuse striker strikes by the fuse blow, the accumulated in the second spiral spring. Since the input shaft can be rotated in the open direction using rotational energy, the power switch can be quickly opened when the fuse is blown.

1 shows an example in which an operation device for a power switch according to an embodiment of the present invention is connected to a power switch through an output shaft.
2 is a perspective view showing a driving unit of an operating device for a power switch according to an embodiment of the present invention.
3 is an exploded perspective view showing parts of an operation device for a power switch according to an embodiment of the present invention.
4 is a perspective view showing a state in which parts of an operation device for a power switch according to an embodiment of the present invention are assembled.
5 is a perspective view showing a state in which parts of an operation device for a power switch according to an embodiment of the present invention are assembled from a different angle.
6 to 10 show step-by-step operations for inputting and opening an operation device for a power switch according to an embodiment of the present invention.
11 and 12 show examples in which the second spiral spring is wound up and accumulated during the input operation of the operating device for a power switch according to an embodiment of the present invention.
13 shows a link device for releasing a restraint of a second latch by interlocking with a restraint device of an operation device for a power switch according to an embodiment of the present invention.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings. The following examples are presented in order to sufficiently convey the spirit of the present invention to those of ordinary skill in the art to which the present invention pertains. The present invention is not limited to the exemplary embodiments presented here, but may be embodied in other forms. In the drawings, in order to clarify the present invention, portions not related to the description may be omitted, and sizes of components may be slightly exaggerated to aid understanding.

1 shows a state in which an operation device for a power switch according to an embodiment of the present invention is connected to a power switch through an output shaft.

Referring to FIG. 1, the operating device 10 may be connected to a mover (not shown) of the power switch through an output shaft 1, a rotating arm 2, and an advancing and retreating rod 3. The operating device 10 rotates the output shaft 1 in the input direction (A) or the opening direction (B) when the power switch needs to be input or opened. Therefore, the advance and retreat rod 3 connected to the output shaft 1 through the rotary arm 2 may advance for input of the power switch or retreat for opening.

Although not shown in the drawing, when the advance and retreat rod 3 is advanced, the mover of the power switch is brought into contact with the stator so that power is supplied. When the advance and retreat, the mover of the power switch is separated from the stator and You can make the supply cut off.

Here, as an example of a connection device connecting the operation device 10 and the power switch, the output shaft 1, the rotary arm 2, the advance and retreat rod 3, etc. are presented, and the operation device 10 and the power switch are connected. The shape of the connecting device is not limited thereto. The operating device 10 may be used to operate various types of power switches through a change in a connection device.

As shown in Figs. 2, 3, and 4, the operation device 10 operates the first operation unit 100 and the first operation unit 100 to implement a quick input or open operation of the power switch. The driving unit 200 may include a second operation unit 300 that implements an operation of rapidly opening the power switch when the fuse (not shown) used together with the power switch is blown.

The first operation unit 100 includes a housing 110, an input shaft 120, a first spiral spring 130, an inner winding support member 140, an output rotation member 150, a first latch 161, and a second latch. (162), a plurality of latch engaging portions (163, 164, 165), it may include a winding control member 170, a ring member 180.

The housing 110 may be provided in a cylindrical shape with one end in the axial direction open, as shown in FIG. 3. The input shaft 120 is rotatably installed in the center of the housing 110, and the winding control member 170, the first spiral spring 130, the inner winding support member 140, the output rotation member inside the housing 110 from the inside 150 is accommodated in a manner that is assembled sequentially.

As shown in FIGS. 2 and 3, the input shaft 120 extends from the inside of the housing 110 to the outside through the housing 110, and is connected to the driving unit 200 from the outside of the housing 110. The input shaft 120 may rotate in a forward direction or a reverse direction by the operation of the driving unit 200. The input shaft 120 may be configured as a spline shaft, and transmits the rotational force of the driving unit 200 to the winding control member 170 installed inside the housing 110.

The first spiral spring 130 is disposed outside the input shaft 120 inside the housing 110 and has inner support portions 131 and outer support portions 132 bent at both ends to accumulate rotational energy through winding. do. The inner support part 131 may be bent toward the center from the inner end of the first spiral spring 130 and then may extend a predetermined length. The outer support part 132 may be bent from the outer end of the first spiral spring 130 toward the outer side in the radial direction and then extend a predetermined length. In the present embodiment, one first spiral spring 130 is presented, but the first spiral spring 130 may be configured in plural.

The inner winding support member 140 is installed so that the rotation center coincides with the input shaft 120. The inner winding support member 140 may be rotatably supported on the outer surface of the input shaft 120 inside the housing 110. The inner winding support member 140 includes a rotation coupling portion 141 that is rotatably coupled, and an extension portion 142 extending radially from the rotation coupling portion 141. The inner winding support member 140 includes a spring support part 143 provided in a groove shape on the inner surface of the rotation coupling part 141 so that the inner support part 131 of the first spiral spring 130 can be caught and supported.

Since the inner support member 140 is supported by the inner support part 131 of the first spiral spring 130 connected to the rotation coupling part 141, rotation energy is generated by winding the first spiral spring 130 from the inside by rotation. It can be accumulated and rotated by the rotational energy accumulated in the first spiral spring 130.

The output rotation member 150 is installed so that the rotation center coincides with the input shaft 120. The output rotating member 150 may have a center rotatably supported on the outer surface of the input shaft 120. Therefore, the output rotation member 150 may rotate separately from the input shaft 120 and the inner winding support member 140.

The output rotating member 150 has a cylindrical shaft connection part 151 to which an output shaft (1, see FIG. 1) is separated and connected at the center, an extension part 152 extending radially from the shaft connection part 151, and an extension It includes a locking protrusion 153 extending from the end of the part 152 toward the outer support part 132 of the first spiral spring 130. As shown in FIG. 5, the outer support part 132 of the first spiral spring 130 is hooked and supported on the locking protrusion 153 of the output rotating member 150, and the inner winding support member ( 140) of the extension 142 is hooked and supported.

The first latch 161 and the second latch 162 are rotatably installed on both shoulder portions of the shaft connection portion 151 of the output rotating member 150, respectively. Each of the first and second latches 161 and 162 has one end rotatably coupled to the output rotating member 150, and each free end has a first torsion spring 161a and a second latch installed at the 2 The torsion spring (162a) maintains the unfolded state in the usual outward direction by the elasticity of the spring.

The plurality of latch engaging portions 163, 164, and 165 are fixed at positions spaced apart from each other in the rotation direction of the output rotating member 150 so that the first latch 161 or the second latch 162 can be caught. The plurality of latch engaging portions 163, 164, and 165 may be fixed to the outside of the ring member 180 mounted on the open end of the housing 110, respectively. Therefore, the first latch 161 and the second latch 162 are normally held in a plurality of latch engaging portions 163, 164, and 165, thereby limiting the rotation in the input direction and the opening direction of the output rotating member 150, respectively. .

The winding control member 170 may be provided by cutting and bending a metal plate. The winding control member 170 is disposed at the innermost side of the housing 110, and the shaft support part 171 provided at the rotation center is fixed to the outer surface of the input shaft 120 and thus rotates together when the input shaft 120 rotates.

The winding control member 170 includes a winding control jaw 172 that extends bent toward the outer support portion 132 of the first spiral spring 130 from an end spaced from the rotation center in the radial direction, and a winding control jaw based on the rotation center. (172) It is provided on the opposite side and includes a locking release part 173 capable of selectively releasing the locking of the first latch 161 or the second latch 162 according to rotation.

As shown in Figure 5, the winding control jaw 172 is supported by hanging the outer support 132 of the first spiral spring 130 on one side in the rotation direction, and the extension of the inner winding support member 140 on the other side in the rotation direction 142 is hooked and supported.

As shown in FIG. 3, the jam release part 173 is a first disengagement part 173a that releases the catch of the first latch 161 when the take-up control member 170 rotates in the input direction (A direction). ), and a second disengagement part 173b for releasing the second latch 162 when the winding control member 170 rotates in the opening direction (direction B).

When the winding control member 170 rotates in the input direction (A direction), the winding control jaw 172 can rotate by walking the outer support portion 132 of the first spiral spring 130. At this time, the rotation of the output rotating member 150 is restricted by the first latch 161, and the inner winding support member 140 is also caught by the locking protrusion 153 of the output rotating member 150 and thus rotation is restricted. As 130 is wound from the outside, rotational energy can be accumulated. In addition, the winding control member 170 rotates over a set period, and the first latch release part 173a pushes the first latch 161 to release the first latch 161, thereby rotating the inner winding support member 140 and the output. The member 150 can rapidly rotate in the input direction (A direction) by the rotation energy accumulated in the first spiral spring 130 to rotate the output shaft 10 in the input direction (A).

Contrary to the above case, when the winding control member 170 rotates in the opening direction (B direction), the winding control jaw 172 engages the extension part 142 of the inner winding support member 170 and rotates in the opening direction (B direction). I can make it. At this time, the rotation of the output rotation member 150 is restricted by the second latch 162, and the outer support part 132 of the first spiral spring 130 is caught by the locking protrusion 153 of the output rotation member 150 and rotates. This is limited, and the inner support part 131 of the first spiral spring 130 rotates reversely together with the inner winding support member 140. Therefore, in this case, the first spiral spring 130 is wound in reverse from the inside, thereby accumulating rotational energy. In addition, the winding control member 170 rotates in the reverse direction over a set section, so that the second latch release part 173b pushes the second latch 162 to release the second latch 162, so that the output rotation member 150 The output shaft 10 may be rotated in the open direction by instantaneous rapid rotation in the opening direction (B direction) by the rotational energy accumulated in the first spiral spring 130.

Referring to FIGS. 2 and 5, the driving unit 200 rotates the input shaft 120 from the outside of the housing 110 in a forward or reverse direction so that the winding control member 170 inside the housing 110 can be rotated. The driving unit 200 may include a rotating cam 210, a helical transmission shaft 220, a moving member 230, a driving motor 240, a reduction gear unit 250, and a driving unit frame 260.

The driving unit frame 260 may include a support panel 161 fixed to the outside of the housing 110 and shaft support members 262 provided on both lower sides of the support panel 261.

The rotation cam 210 has a rotation center portion fixed to the input shaft 120 so as to rotate the input shaft 120 by rotation, and a cam protrusion 211 protruding in the radial direction. The rotation cam 210 may be provided with a steel plate having a predetermined thickness, and may be installed to rotate while spaced apart from the surface of the support panel 261.

The spiral transfer shaft 220 is provided at a position close to the rotational trajectory of the cam protrusion 211, and both ends are rotatably supported by a shaft support member 262 fixed to the support panel 261.

The moving member 230 is installed on the outer surface of the spiral transfer shaft 220 and includes a locking portion 231 capable of rotating by hooking the cam protrusion 211 on one side. Although not shown in the drawing, the locking portion 231 may be supported by a guide means formed to be elongated in the longitudinal direction of the spiral transport shaft 220. Therefore, when the helical transfer shaft 220 rotates, the movable member 230 moves in the longitudinal direction of the helical transfer shaft 220 in a state where rotation is restricted, and in this process, the locking part 231 is a cam of the rotation cam 210 It can be rotated by hanging the protrusion 211.

The driving motor 240 is installed under the spiral transfer shaft 220. The driving motor 240 may operate to rotate forward or reverse according to a control signal for inputting or opening a power switch. The reduction gear unit 250 includes a drive gear 251 coupled to the shaft of the drive motor 240, and a driven gear 252 coupled to one end of the spiral transfer shaft 220 in a state engaged with the drive gear 251. Can include.

When the helical transfer shaft 220 rotates in one direction by the operation of the driving motor 240, the driving unit 200 rotates the rotating cam 210 in one direction while the moving member 230 moves in the lateral direction, and the driving motor ( When the spiral transfer shaft 220 rotates in the reverse direction by the operation of 240), the moving member 230 may move in the opposite direction and rotate the rotation cam 210 in the reverse direction.

Referring to FIG. 5, the locking part 231 of the moving member 230 is located on the right side of the cam protrusion 211 of the rotating cam 210 in the initial state, and moves to the left while walking the cam protrusion 211 It can be rotated and positioned on the left side of the cam protrusion 211 beyond the cam protrusion 211 while being close to the left end of the helical transfer shaft 220. Therefore, when the moving member 230 moves in the reverse direction, the moving member 230 may re-engage the cam protrusion 211 and rotate it in the reverse direction.

5 and 6, buffer members 271 and 272 supporting the moving member 230 moving at high speed at both ends of the spiral transfer shaft 220, and the moving member 230 are provided with the spiral transfer shaft 220 Limit switches 281 and 282 for detecting whether or not they have moved toward both ends of the may be installed, respectively.

When the operation device 10 rotates the input shaft 120 in the input direction (A direction) or the opening direction (B direction) while the rotation cam 210 rotates by the operation of the driving unit 200, the housing (110) It is possible to accumulate rotational energy by rotating the first spiral spring 130 while the internal winding control member 170 rotates with the input shaft 120, and the output rotation member 150 by the accumulated rotational energy It is possible to implement an operation of instantaneous rapid rotation in the input direction (A) or the open direction (B). This operation may be performed while the rotation cam 210 rotates within a set range.

Next, the overall operation of the first operation unit 100 according to the operation of the driving unit 200 will be described with reference to FIGS. 6 to 10.

6 to 8 show the operation of the first operation unit 100 for inputting the power switch step by step. In the initial state, the output rotating member 150 connected to the output shaft 10 maintains a state in which the first latch 161 is caught by the latch engaging portion 163, as shown in FIG. 6, so that the input direction (A) is rotated. It is limited, and since the extension portion 142 of the inner winding support member 140 is also caught by the locking projection 153 of the output rotating member 150, rotation in the input direction (A) is also limited. When the rotation of the inner winding support member 140 is restricted, the inner support portion 131 of the first spiral spring 130 is maintained in a fixed state.

In this state, when the winding control member 170 is rotated in the input direction (A) by the operation of the driving unit 200, as shown in FIG. 7, the winding control jaw 172 of the first spiral spring 130 The outer support part 132 is hooked and rotated. At this time, since the rotation of the output rotating member 150 is limited by the first latch 161 and the rotation of the inner winding support member 140 is also limited, the first spiral spring 130 is wound from the outside to accumulate rotational energy.

In the state of FIG. 7, the take-up control member 170 further rotates in the input direction (A) for more than a set section, and the first latch release part 173a pushes the first latch 161 and the first latch 161 is caught. At the moment of release, the inner winding support member 140 and the output rotation member 150 rapidly rotate in the input direction (A) by the rotational energy accumulated in the first spiral spring 130 as shown in FIG. Rotate (10) in the input direction (A). Therefore, the power switch is connected to the power as the mover is in close contact with the stator quickly by the rapid advance of the advance and retract rod 3.

In the input state of the power switch, as shown in FIG. 8, the second latch 162 is caught by the latch engaging portion 165 to limit the reverse rotation of the output rotating member 150, and the first spiral spring 130 Since elasticity is transmitted to the power switch through the output rotating member 150 and the output shaft 10 to pressurize the mover, the mover is in strong contact with the stator to maintain a stable connection of power.

When opening the power switch in the state of FIG. 8, as shown in FIG. 9, the winding control member 170 rotates in the opening direction (B) by the operation of the driving unit 200, and the winding control jaw 172 is internally wound. Hook the extension 142 of the support member 140 to rotate in the opening direction (B). At this time, the rotation of the output rotating member 150 is restricted by the second latch 162 being caught by the latch locking part 165, and the outer supporting part 132 of the first spiral spring 130 is caught by the output rotating member 150. Since rotation is restricted by being caught by the jaw 153, the inner support part 131 of the first spiral spring 130 rotates in the opening direction (B) together with the inner winding support member 140 and is wound from the inside, contrary to the closing operation. It accumulates rotational energy.

And in the state of FIG. 9, the winding control member 170 further rotates in the opening direction (B) for more than a set section, and the second disengagement part 173b pushes the second latch 162 to engage the second latch 162 At the moment of releasing, the output rotating member 150 rapidly rotates in the opening direction (B) by the rotational energy accumulated in the first spiral spring 130 as shown in FIG. 10 to open the output shaft 10 in the opening direction ( B) rotate. Accordingly, the power switch is cut off as the mover is rapidly separated from the stator by the rapid retraction of the advance and retract rod 3.

After completion of the opening operation, the first operation unit 10 returns to the initial state as in the example of FIG. 6. Accordingly, the operating device 10 may repeat the instantaneous closing operation and the instantaneous opening operation as described above as necessary.

Since the operating device 10 is composed of the first spiral spring 130 as a means for accumulating rotational energy for the instantaneous closing operation and the instantaneous opening operation, the operating device 10 is more compact than the conventional one, while the stable closing operation and opening operation Can be implemented.

Since the first spiral spring 130 accumulates rotation energy while being wound from the inside or outside by rotation of the winding control member 170, the volume of the first spiral spring 130 does not increase compared to the initial state even though it is operated to accumulate rotation energy. In addition, the winding control member 170, the inner winding support member 140, and the output rotation member 150 are also limited to rotation. Therefore, the operation device 10 can accommodate a plurality of components constituting the first operation unit 100 in the compact cylindrical housing 110, thereby significantly reducing the volume and stably operating.

High-voltage power supply equipment such as the Ring Main Unit uses a fuse that protects the load-side equipment while being blown when an abnormal current flows along with a power switch. In the operation device 10 of the present embodiment, the second operation unit 300 functions to protect the load side by quickly opening the power switch when the fuse is blown even if the driving unit 200 does not operate.

2 to 5, the second operation unit 300 includes a second spiral spring 310 and a restraining device 330 capable of restraining the second spiral spring 310 in a wound state.

The second spiral spring 310 is installed outside the input shaft 120 between the support panel 261 and the housing 110 of the first operation unit 100. The second spiral spring 310 is wound when the input shaft 120 rotates in the initial input direction (direction A) to accumulate rotational energy for emergency opening.

As shown in FIG. 3, the second spiral spring 310 is fixed by hooking the outer end 311 to the fixing pin 301 of the support panel 261, and the inner end 312 is the outer surface of the input shaft 120. It is coupled to the rotating bush 320 that is rotatably supported on. Accordingly, the second spiral spring 310 may accumulate rotation energy while being wound from the inside when the rotating bush 320 rotates in the input direction (direction A). Here, the case where there is one second spiral spring 310 is presented, but the second spiral spring 310 may be configured in plural.

The restraint device 330 may restrain the second spiral spring 310 into an accumulated state of rotational energy, and release the restraint of the second spiral spring 310 by a blow of the fuse striker 400 when the fuse is blown. The input shaft 120 may rapidly rotate in the open direction.

2, 3, 5, 11 and 12, the restraint device 330 includes a rotation plate 331, a third latch 332, a restraint control shaft 333, and an operation cam 334 can do.

The rotating plate 331 is coupled to the rotating bush 320 so as to rotate with the rotating bush 320. The rotating plate 331 is caught by the take-up lever 270 rotating together with the input shaft 120, and has a first locking part 331a provided on the side so that it can rotate in the input direction, and the outside so that it can be caught while rotating in the input direction. It has a second engaging portion (331b) provided at the periphery.

The rotating plate 331 may be provided in an approximately disk shape, and one side may be installed so as to contact the side surface of the second spiral spring 310. As shown in FIG. 2, the first engaging portion 331a protrudes to the opposite side of the support panel 261 through the arc-shaped groove 261a formed in the support panel 261, and is opposite to the support panel 261. It can be rotated in the input direction by being caught by the located take-up lever 270.

The third latch 332 is rotatably installed on the outer periphery of the rotating plate 331 so as to be caught by the second locking part 331b of the rotating plate 331 as shown in FIGS. 3, 11 and 12. The third latch 332 is provided at a position radially spaced from the rotation support part 332a and the rotation support part 332a rotatably supported on the support shaft 336 parallel to the restraint control shaft 333, and the rotation plate ( The roller member (332b), the rotation support (332a) and the roller member (332b) caught in the second locking part (331b) of 331), and the locking part (332c) is separated from the cam groove (333a) of the restraint control shaft (333). It may include.

The restraint control shaft 333 is rotatably installed on the outer periphery of the rotating plate 331 in a state parallel to the input shaft 120. The restraint control shaft 333 has a cam groove 333a for restraining the third latch 332 or releasing the restraint of the third latch 332 while the third latch 332 is caught in the second engaging portion 331b. Include. As shown in FIG. 12, the cam groove 333a has a shape in which a part of the restraint control shaft 333 is cut in a semicircular shape.

The restraint control shaft 333 is rotatably supported on the support panel 261 with one side passing through the support panel 261, and is torsion on the outer surface so that it can rotate in a direction to restrain the third latch 332 A spring (not shown) may be installed.

The operating cam 334 is fixed to one end of the restraint control shaft 333 so as to rotate together with the restraint control shaft 333. The operation cam 334 may rotate the restraint control shaft 333 in the restraint release direction when being hit by the fuse striker 400.

The second operation unit 300 is constrained to allow rotation of the output rotating member 150 in the open direction when the constrained control shaft 333 rotates in the releasing direction as shown in FIGS. 4 and 12. It may include a link device 360 for releasing the jamming of the second latch 162 in conjunction with the operation of the control shaft 333.

The link device 360 is installed to be adjacent to the driving link 361 mounted on the restraint control shaft 333 and the second latch 162, and is a driven link that unlocks the second latch 162 by rotation. 362 and a connection link 363 for transmitting the rotation of the driving link 361 to the driven link 362. When the restraint control shaft 333 is rotated in the restraint release direction by the blow of the fuse striker 400, the driven link 362 strikes the second latch 162 while the driven link 362 rotates. 162). Therefore, the output rotating member 150 is in a state capable of rotating in the open direction.

Next, the operation of the second operation unit 300 will be described.

3 and 11, when the drive unit 200 rotates the input shaft 120 in the input direction (A direction) to input the power switch, the take-up lever 270 coupled to the input shaft 120 is also inputted. While rotating to the rotation plate 331 by hooking the first engaging portion (331a) to rotate in the input direction. Accordingly, the rotating plate 331 rotates the rotating bush 320 coupled to the center of the second spiral spring 310 in the input direction, and the second spiral spring 310 is wound from the inside to accumulate rotational energy.

When the rotating plate 331 rotates in the state of FIG. 12, the second engaging portion 331b of the rotating plate 331 is caught by the roller member 332b of the third latch 332 and reverse rotation is restricted, and in this state The third latch 332 is restrained so as not to be pushed by the cam groove 333a of the restraint control shaft 333 by rotation of the restraint control shaft 333. In this way, the restraint device 330 restrains the rotating plate 331 to maintain a state in which the rotating plate 331 rotates in the input direction (a state in which rotational energy is accumulated in the second spiral spring).

This state is maintained as long as the fuse striker 400 strikes the operating cam 334 by the fuse blow and the restraint control shaft 333 does not rotate in the restraint release direction. Therefore, the usual operation device 10 can repeat the input and open operation while maintaining this state.

When the fuse is blown while the operating device 10 has the power switch turned on and the fuse striker 400 strikes the operating cam 334, the operating cam 334 rotates to release the restraint control shaft 333 Rotate in the direction Therefore, at this time, the restraint of the third latch 332 by the restraint control shaft 333 is released, and the restraint of the second engaging portion 331b of the rotating plate 331 by the third latch 332 is released.

When the restraint of the rotating plate 331 is released, the rotating plate 331 rotates in the open direction by the rotational energy accumulated in the second spiral spring 310, and the first engaging portion 331a is wound up connected to the input shaft 120 By rotating the lever 270 in the open direction, the input shaft 120 rapidly rotates in the open direction. At this time, since the restraint control shaft 333 rotates in the restraint release direction and the link device 360 releases the second latch 162, the output rotation member 150 is allowed to rotate in the open direction. While 150 rapidly rotates in the opening direction together with the input shaft 120, the power switch is quickly opened.

As described above, in the operating device 10 for a power switch according to the present embodiment, the second spiral spring 310 accumulates rotational energy when the input shaft 120 rotates in the input direction, and then the fuse striker 400 is blown by the fuse. When is blown, the input shaft 120 can be rotated in the open direction using the rotational energy accumulated in the second spiral spring 310, so that the power switch can be quickly opened when the fuse is blown.

10: operation device, 100: first operation unit,
110: housing, 120: input shaft,
130: first spiral spring, 140: inner winding support member,
150: output rotating member, 161: first latch,
162: second latch, 163,164,165: latch engaging portion,
170: winding control member, 180: ring member,
200: driving unit, 210: rotating cam,
220: spiral transfer shaft, 230: moving member,
240: drive motor, 250: reduction gear unit,
270: take-up lever, 300: second operation part,
310: second spiral spring, 320: rotating bush,
330: restraint device, 331: rotating plate,
332: third latch, 333: restraint control shaft,
334: operating cam, 360: link device.

Claims (10)

Input shaft;
A first spiral spring installed outside the input shaft and having an inner support portion and an outer support portion;
An inner winding support member having a spring support portion installed so that a rotation center coincides with the input shaft and supporting the inner support portion of the first spiral spring and an extension portion extending in a radial direction;
The rotation center is installed to coincide with the input shaft, has a shaft connection part connected to the output shaft at the center, is provided at the end of the extension part extending in the radial direction, and the outer support part of the first spiral spring is hooked and supported at one side in the rotation direction. An output rotating member having a locking protrusion on the other side in the rotation direction and supported by the extension part of the inner winding support member;
First and second latches respectively installed on both sides of the output rotation member so as to limit rotation in the input direction and the rotation in the opening direction of the output rotation member, respectively;
A plurality of latch engaging portions fixed at positions spaced apart from each other in the rotation direction of the output rotating member so that the first latch or the second latch can be caught;
It is fixed to the input shaft so as to rotate with the input shaft, provided at an end spaced apart in a radial direction, and supported by hanging the outer support part of the first spiral spring on one side in the rotation direction, and the extension part of the inner winding support member hanging on the other side in the rotation direction. A winding control member having a winding control jaw to be;
A locking release part provided on the opposite side of the winding control jaw of the winding control member and releasing the locking of the first latch or the second latch according to rotation;
A driving unit that rotates the input shaft in an input direction or an open direction;
A second spiral spring for accumulating rotation energy for emergency opening when the input shaft rotates in the input direction; And
And a restraining device for constraining the second spiral spring to an accumulation state of rotational energy, and releasing the restraint of the second spiral spring by a blow of a fuse striker when the fuse is blown so that the input shaft rapidly rotates in the open direction; Control device for power switch. The method of claim 1,
A cylindrical housing in which the input shaft is rotatably supported in the center, and accommodates the winding control member, the first spiral spring, the inner winding support member, and the output rotation member, and one end in the axial direction is opened; And
A ring member installed on the open end side of the housing and supporting the plurality of latches; Operation device for a power switch further comprising a. The method of claim 2,
The plurality of latch engaging portions are installed outside the ring member,
One end of the first and second latches is rotatably supported by the output rotating member, and each free end is extended outwardly by the elasticity of a torsion spring. The method of claim 1,
The jam release part,
A first disengagement part for releasing the catch of the first latch when the take-up control member rotates in the input direction; And
An operating device for a power switch, comprising a second disengagement unit for releasing the second latch when the take-up control member rotates in an open direction. The method of claim 1,
The driving unit,
A rotation cam fixed to the input shaft, rotating the input shaft by rotation, and having a cam protrusion protruding in a radial direction;
A spiral transfer shaft provided at a position close to the rotation trajectory of the cam protrusion;
A moving member that is coupled to the spiral transfer shaft and rotates the rotation cam in one direction or in a reverse direction for a set section in a manner that rotates the cam protrusion while moving by the rotation of the spiral transfer shaft; And
Power switch operating device comprising a; drive motor for rotating the spiral transfer shaft in one or reverse direction. The method of claim 1,
The second spiral spring is installed outside the input shaft, the outer end is fixed to the frame, and the inner end is coupled to a rotating bush rotatably supported on the outer surface of the input shaft. The method of claim 6,
The restraint device,
The central part is fixed to the rotating bush, and a first locking part is provided on the side so that it can be rotated in the input direction by being caught by a take-up lever that rotates with the input shaft, and a second locking part is provided on the outer periphery to be caught while rotating in the input direction A rotating plate provided with an additional;
A third latch installed on the outer side of the rotating plate and rotating so as to be caught by the second locking part;
It is installed on the outer periphery of the rotating plate in a state parallel to the input shaft, and has a cam groove for restraining the third latch or releasing the restraint of the third latch while the third latch is caught by the second latch, A restraint control shaft that rotates in a direction that normally rests the third latch; And
And an operation cam fixed to the restraint control shaft and rotates the restraint control shaft in a restraint release direction when struck by the fuse striker. The method of claim 7,
Operation for a power switch, further comprising a link device for releasing the locking of the second latch by interlocking with the operation of the restraint control shaft to allow rotation of the output rotating member in the open direction when the restraint control shaft rotates in the restraint release direction Device. The method of claim 8,
The link device,
A drive link mounted on the restraint control shaft;
A driven link installed adjacent to the second latch and releasing the second latch by rotation; And
Power switch operating device comprising a; connection link for transmitting the rotation of the drive link to the driven link. The method of claim 7,
The third latch,
A rotation support part rotatably supported on a support shaft parallel to the restraint control shaft;
A roller member provided at a position spaced apart from the rotation support part in a radial direction and caught on the second locking part; And
And a locking part spaced apart from the rotation support part and the roller member and caught in the cam groove of the restraint control shaft.

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