KR940004948B1 - Operating mechanism for disconnecting switch - Google Patents

Abstract

No content.

Description

Disconnect Mechanism

1 is a front view showing an off state of the operation mechanism for the disconnector according to an embodiment of the present invention.

2 is a front view showing a first on state.

3 is a front view showing the grounding state of FIG.

4 is a side view showing the off-on state of FIG.

5 is a side view showing the off-ground state of FIG.

Figure 6 is a front view showing an off state of the operation mechanism for the disconnector according to another embodiment of the present invention.

7 is a front view showing an on state of FIG.

8 is a front view showing a ground state of FIG.

9 is a side view showing the off state of FIG.

10 is a front view showing an off state of the operation mechanism for the disconnecting device according to another embodiment of the present invention.

11 is a side view showing the off state of FIG.

12 is a front view showing the individuality state of the operation mechanism for the disconnecting device according to another embodiment of the present invention.

13 is a side view of the operation mechanism for the disconnector of FIG.

14 is a side view showing the main part of the operation mechanism for the disconnecting device of FIG.

FIG. 15 is a side view showing the main part of the operation mechanism for the disconnecting device of FIG.

FIG. 16 is a side view showing the grounding state of the operation mechanism for the disconnector shown in FIG. 15; FIG.

FIG. 17 is a front view showing the closed state of the operation mechanism for the disconnector shown in FIG.

Fig. 18 is a front view showing the grounding state of the operating mechanism for the disconnector shown in Fig. 12;

19 is a side view showing an on state of a conventional operation mechanism for disconnectors.

FIG. 20 is a front view showing the on state of FIG. 19. FIG.

FIG. 21 is a front view showing an off state of FIG. 19; FIG.

FIG. 22 is a front view showing separation of the link mechanism in the off state of FIG. 19; FIG.

23 is a front view showing the grounding state of FIG.

* Explanation of symbols for the main parts of the drawings

1: spindle, 2: manual operation shaft

3: Clutch operation lever 4: Driven lever

7: External drive device 8: Disconnector body

11: spindle, 12: crank,

12b: eccentric shaft, 12c: central shaft

13: Crank lever 13a: home,

14: Driven lever

The present invention relates to an operation mechanism for a disconnector in a disconnector used in water distribution facilities and the like.

19 is a view showing a conventional operation mechanism for a three-position disconnector. In the drawing, reference numeral 50 denotes a main shaft which transmits the required rotational force to the three-position disconnector, and 51 denotes a fixed shaft fitted to the main shaft 50. The shaft coupling lever 52 is a driven lever which allows the on-off operation to be performed on the spindle 50 in a state where it is superimposed on the shaft coupling lever 51, and 53 is a driven lever 52 of the driven lever 52. It is a clutch lever fitted to the main shaft 50 at the outer side, and protrudes three switching pins 54, 55, 56 on the same radius about the main shaft 50 on the inner side thereof. Installed. In addition, a pin hole 51a into which the switching pin 55 or 56 of the clutch lever 53 is fitted is inserted into the shaft coupling lever 51, and the clutch lever 53 is formed into the driven lever 52. Pin holes 52a into which the switching pins 54 of the pins are fitted are formed. Reference numeral 62 is an external drive device mounted on an outer side of the attachment plate 60, and the driven lever 52 is operated through the lever 62a and the connecting rod 61 for forward and reverse rotation of the external drive device 62. And the rotational operation of the driven lever 52, that is, on-off operation, is transmitted to the main shaft 50 through the clutch lever 53, the switching pins 54, 56, and the shaft coupling lever 51. do. Reference numerals 57 and 58 are stopper pins arranged and protruding from the outside of the attachment plate 60, whereby the range of rotational motion of the shaft coupling lever 51 is defined.

Next, the operation procedure will be explained with reference to Figs. 20 to 23 showing the operation mode. First, the operation of the external drive device 62 is shown in Figs. 20 and 21 for the on-off operation. It is transmitted to the driven lever 52 through the lever 62a and the connecting rod 61, and rotates it. This rotational operation is performed through the clutch lever 53 coupled to the switching pins 54 and 56. It transmits to 51, the main shaft 50 is rotated, and the on-off operation of the 3-position disconnector 8 is performed through the drive link 59. As shown in FIG. The three-position disconnector 8 is composed of an operation rod 8a movable blade 8b, a fixed main circuit terminal 8c, and a ground terminal.

Next, for the off-ground operation, as shown in FIGS. 22 and 23, the clutch lever 53 is pulled out to insert the switching pin 55 into the pin hole 51a of the shaft coupling lever 51. As a result, the driven lever 52 and the shaft coupling lever 51 are separated. In this state, when the clutch lever 53 is rotated as shown in FIG. 23, the grounding operation of the three-position disconnector is performed.

In addition, the disconnecting device used in the water substation facility is provided with a three-position disconnecting device for driving the secondary contact points to the three positions of the "on" position, the "off" position, and the "ground" position. There is something. This 3-position disconnector operating mechanism has on-off operation of opening and closing between the primary and secondary converters by an external drive device, and grounding operation of grounding the contacts of the secondary converter in the "off" position by manual operation. There are two types of operation. The grounding operation is an important operation for safely performing maintenance work on electrical equipment connected to the secondary side converter, and, unlike the mechanically driven on-off operation, is operated manually to confirm safety. This grounding operation is a manual operation in which the contact of the secondary side converter in the "off" position is reliably separated from the drive mechanism of the external drive device, and thereafter, the contact of the secondary side converter is electrically connected to the ground side manually.

Since the conventional three-position disconnecting device operating mechanism is constituted as described above, the switching pins 54, 55, 56 disposed on the clutch lever 53 in switching the on-off operation or the off-on operation. It is necessary to remove or plug in, but it is difficult to align the switching pins 54, 55 and 56 with the pinholes 51a and 52a. As a result, the pins 54, 55, There was a problem that the switching was performed in a state where a certain load was applied in the driving direction between the 56 and the pinholes 51a and 52a, and a large force was required for the switching operation.

In addition, the conventional three-position disconnector operating mechanism needs to perform a clutch operation at each operation of "off"-"ground", "ground"-"off", and the structure of the device is complicated and expensive. There was a problem.

In addition, the conventional disconnecting device operating mechanism requires complicated operation in order to reliably and safely switch the contact point of the secondary side converter from the above-described on-off operation to the grounding operation. In addition, since the disconnecting device is for electric power, a large part with heavy weight is used for the mechanism part of the manual operation in the grounding operation, which requires a great force for the manual grounding operation.

This invention is made | formed in order to solve the above problems, It aims at obtaining the operation mechanism for disconnectors which can switch a clutch smoothly.

In addition, the present invention eliminates the need to operate the clutch at each of the operations of "off"-"ground", "ground"-"off", and obtains an operation mechanism for the 3-position disconnector that is easy to operate with a simple configuration. It is done.

In addition, another object of the present invention is to obtain an operation mechanism for a disconnecting device which can reliably and safely perform the switching operation between the opening and closing operation and the grounding operation, and moreover, without directly driving a heavy component.

The operation mechanism for a three-position disconnector according to the present invention is to provide a clutch for transmitting and disconnecting driving force between the three-position disconnector and the driving device, and a manual operation shaft for directly supporting the clutch and simultaneously driving the three-position disconnector. .

Another operation mechanism for a three-position disconnector according to the invention is connected between the three-position disconnector and the drive device through a crank having a crank lever and an eccentric shaft.

The operation mechanism for a three-position disconnector according to another invention does not employ a clutch, but instead uses a crank between a driven lever and a crank lever secured to a main shaft, and uses " off "-" on " Each operation of " off " was operated by an external drive device, and each operation of " off "-" ground " and " ground "-" off "

Another operation device for a disconnector according to the present invention is a drive means for driving by receiving an opening / closing command between a primary side converter and a secondary side converter, and operated by a driving force of the driving means, and opening / closing operation between the primary side converter and the secondary side converter. And an opening and closing means for driving the casting operation shaft, and a clutch mechanism removable from the opening and closing means, to transfer the driving force of the driving means to the casting operation shaft when engaged with the opening and closing means, and engaging with the opening and closing means It is provided with a grounding means for manipulating the casting work shaft when peeled off to ground the secondary converter separated from the primary side converter, and a separating means that always engages with the grounding means and disengages the grounding means from the opening and closing means.

Engage and disassociate the clutch between the drive system and the main shaft of the 3-position disconnector, and in engagement, drive the 3-position disconnector with the drive, and disengage the 3-position disconnector to the manual operation side that supports the clutch. do.

Moreover, the operation mechanism for 3 position disconnectors which concerns on another invention performs an on-off operation by rotating the crank lever and the crank which has an eccentric shaft integrally between a 3 position disconnector and a drive apparatus, and a crank rotates on a crank lever. This is to perform off-ground operation.

In addition, the operating mechanism for the three-position disconnector according to another aspect of the present invention includes a driven lever, a crank, and a crank lever integrated at each of the operations "off", "on", "on" and "off" by an external driving device. In order to rotate the main shaft, and to operate the "off"-"ground", "ground"-"off", the main shaft through the crank lever by rotating the crank by a predetermined angle with the external drive device in the "off" position. Rotate the

In addition, the operating mechanism for the disconnector according to the present invention removes the engagement between the opening and closing means and the grounding means by the separating means, for example, the clutch plate, in order to ground the contact of the secondary side converter separated from the primary side converter. It is forbidden to transfer the driving force to the casting shaft that opens and closes the contact of the secondary converter. Next, the grounding means separated from the driving means is grounded by the manual operation to contact the secondary converter with the casting shaft.

Example 1

1 is a front view showing an operation mechanism for a three-position disconnector according to an embodiment of the present invention, and FIG. 4 is a right side view showing the external drive device 7 omitted. In FIG. 1 and FIG. 4, a disconnector shows the state set to the neutral "off" position.

In each of these drawings, reference numeral 1 denotes a main shaft that rotates clockwise and counterclockwise to drive the disconnector main body (typically indicated by (8) in FIG. 4), and (2) denotes the main shaft 1. It is a manual operation shaft which is mounted in the state covered with the tip and engages with the main shaft 1 in the rotational direction by a pin 1a typed on the main shaft 1.

Since the engagement is made by the pin 1a and the hole 2c on the groove on the manual operation shaft 2, the manual operation shaft 2 can be pulled out by sliding forward with the main shaft 1 engaged. have.

Denoted at 2b is a clutch portion of the manual control shaft 2, and 2a is a pin engaged with a handle (not shown) when the manual control shaft 2 is manually operated. (3) is a clutch operation lever for drawing the manual operation shaft 2 forward or returning it to its original position, and is engaged with the manual operation shaft 2 by the pin 3a. 3b is a hole for inserting a handle (not shown) for operating the clutch control lever 3, 3c is a shaft for supporting the clutch operation lever 3 to rotate, and 3d is mounted. It is.

(4) is a driven lever. When the manual control shaft 2 is not pulled forward, the recess 4a and the convex portion of the clutch portion 2b of the manual control shaft 2 are connected. By engagement, the rotational force applied from the outside is transmitted to the main shaft 1 via the manual operation shaft 2. Further, (4b) is a pin typed on the driven lever (4), always engaged with the groove (1b) formed in the cylindrical surface of the main shaft (1), the slide in the axial direction of the driven lever (4) To prevent.

Denoted at 5 is an operating mechanism mounting plate, and 5a is a bearing of a main shaft. (6) is a connecting rod connected to the driven lever (4), (7) is an external drive device, and (7a) is its output lever. In addition, (8) is the main body of the 3-position disconnector shown typically. In addition, (15) and (16) shown to FIG. 9, FIG. 11 are pipe-shaped spacers, and penetrate through the main shaft 1. As shown in FIG.

Next, the operation will be described. 5 and 8 show a state where the three-position disconnector main body 8 is in a neutral "off" position. In this state, when the external drive device 7 is operated and the output lever 7a is rotated a predetermined angle clockwise, the connecting rod 6 rotates the driven lever 4 counterclockwise. In the state of FIG. 8 in which the clutch operating lever 3 is not operated, the driven lever 4 is engaged with the manual operating shaft 2, so that the main shaft 1 rotates together with the driven lever 4. The 3-position disconnector main body 8 is driven to the "on" position. The state of the operation mechanism up to this "on" position is shown in FIG. In addition, the "on"-"off" operation is performed by operating the external drive device 7 in the reverse direction to the above.

In the above " off " position, when the handle (not shown) is inserted into the handle hole 3b of the clutch operating lever 3 and rotated downward by a predetermined angle, the clutch operating lever 3 The upper pin 3a draws the manual control shaft 2 forward (left in FIG. 8). This state is shown in FIG. In this state, the clutch portion 2b on the manual control shaft 2 and the recessed portion 4a of the driven lever 4 are disengaged, so that the spindle 1 can rotate freely with respect to the driven lever 4. Can be. In this state, when the handle (not shown) is engaged with the pin 2a of the manual operation shaft 2 and rotated clockwise by a predetermined angle, the 3-position disconnector main body 8 is located on the side opposite to the above-mentioned " on " position. Drive to the "ground" position. This state is shown in FIG. In addition, "ground"-"off" operation | movement is performed by operation | movement reversed to the above.

Example 2

Next, another embodiment of the present invention will be described with reference to the drawings. FIG. 6 is a front view showing this embodiment, and FIG. 9 is a right side view with the external drive device 7 omitted. 11) is the main shaft rotated clockwise and counterclockwise to drive the three-position disconnector main body (shown schematically as (8) in FIG. 11), (13) is a crank lever fixed to the main shaft (11) , Grooves or groove-shaped holes 13a, roller pins 13b and push springs 13c are mounted as shown.

In addition, 14 is a driven lever having a bearing portion and a connecting rod mounting hole, and is rotatably mounted on the main shaft 11, 12 is a crank, and is rotatable on the driven lever 14. The roller 12c on the eccentric shaft 12b is mounted in the groove or the groove-shaped hole 13a of the crank lever 13 described above, and the crank lever 13 can be driven by rotating the predetermined angle. It is configured to be. 12a is a pin for engaging the handle (not shown) when rotating the crank 12. The driven lever 14 is connected to the output lever 7a of the external drive device 7 via the connecting rod 6 by the connecting rod mounting hole 14a. Denoted at 5 is an operating mechanism mounting plate, and 5a is a bearing of the main shaft 11. In addition, (8) is the 3-position disconnector main body shown typically.

6 and 9 show a state in which the three-position disconnector main body is in a neutral "off" position. In this state, when the external drive device 7 is operated so that the output lever 7a rotates by a predetermined angle clockwise, the connecting rod 6 rotates the driven lever 14 counterclockwise. At this time, as shown in FIG. 6, the line connecting the main axis 11, the eccentric shaft 12b, and the central axis 12e of the crank 12 and the eccentric shaft 12b is at a substantially right angle, and this eccentricity is also present. The shaft 12b is pressed against the upper end of the groove 13a of the crank lever through the roller 12c by the pressing spring 13c and the roller pressing pin 13b.

For this reason, the crank lever 13 is integrated with the driven lever 14 and is driven counterclockwise. Since the crank lever 13 is fixed to the main shaft 11, the three-position disconnector main body connected to the main shaft 11 by being rotated counterclockwise by a predetermined angle by the rotation of the crank lever 13. 8) is driven to the "on" position. The state of the operating mechanism at this "on" position is shown in FIG. In addition, "on"-"off" operation is performed by operating the external drive device 7 in the direction opposite to the above.

In the state of the " off " position shown in Figs. 6 and 9, the crank 12 is engaged by engaging the handle not shown on the manual operation pin 12a without operating the external drive device 7. When rotated clockwise, the roller 12c attached to the eccentric shaft 12b of the crank 12 rotates on the inner side surface of the groove 13a of the crank lever 13, and thus the crank lever 13 Is driven clockwise with the main shaft 11 as the axis.

The rotation of this crank 12 is regulated by the position where the roller 12c stops again by the upper end of the groove 13a of the crank lever 13, and the main shaft 11 and the eccentric shaft 12b in this position. And a line connecting the central axis 12e and the eccentric shaft 12b of the crank 12 to be approximately at a right angle. In this state, the eccentric shaft 12b is pressed against the upper end of the groove 13a of the crank lever 13a via the roller 12c by the pressing spring 13c and the roller pressing pin 13b. By this operation, the crank lever 13 is rotated clockwise by a predetermined angle. Thus, the main body 11 drives the 3-position disconnector main body 8 to the "ground" position opposite to the "on" position. . 8 shows a state of the operating mechanism at this ground position. In addition, the "ground"-"off" operation is performed by operating the crank 12 in the reverse direction as described above.

Example 3

Further, in the above embodiment, the crank 12 is disposed on the driven lever 14, and the external drive device 7 shows an example of a three position disconnecting device operating mechanism connected to the driven lever 14, but the external In the case where the drive device 7 is omitted, the driven lever 14 is fixed, or the bearing part of the crank 12 is disposed on a separate fixed center of gravity, thereby fixing the center of rotation of the crank, thereby making it possible to operate the two-position disconnector. You may make it.

Example 4

In addition, in the above embodiment, the case of the disconnector has been described, but it may be a grounding switch or another switch, and the same effect as in the above embodiment is obtained.

Example 5

Next, another embodiment of the disconnecting device operating mechanism of the present invention will be described with reference to the drawings.

FIG. 12 is a front view showing an embodiment of another operation mechanism for disconnectors of the present invention, and FIG. 13 is a side view of the operation mechanism for disconnectors in FIG. In FIG. 12, the drive means, for example, the contact opening / closing apparatus 7 is arrange | positioned at the operation mechanism mounting plate 5 attached to the disconnector 15. As shown in FIG. This contact opening and closing device 7 is driven based on the contact opening and closing instruction from the outside of the primary and secondary side contacts. In this embodiment, the lever 7a is driven by the shaft 7b based on this contact opening and closing instruction. Is rotated by a predetermined angle. 12 shows the position of the lever 7a when this contact is in the "off" position. The connecting rod 6 connected to the lever 7a is approximately left and right according to the rotational operation between predetermined angles of the lever 7a (an angle of about 60 degrees in the direction of arrow A from the state shown in FIG. 12 in this embodiment). Reciprocating motion

The connecting rod 6 shown in FIG. 12 is a position when it moves to the rightmost direction, and the connecting rod 6 moves to the left direction by the lever 7a rotating to the arrow A direction. The drive lever 4 is supported by the shaft 4c at the right end of the connecting rod 6. This drive lever 4 is comprised so that the circumference | surroundings of the casting work shaft 1 of the opening-closing mechanism 10 which drive the contact 8 of the secondary side converter shown in FIG. The "insertion" position, which is the position of the contact 8a indicated by the dashed-dotted line in FIG. 13, is when the disconnector 15 is in the closed state, and the "grounding" position, which is the position of the contact 8b, is the disconnector 15 When is grounded. A recessed portion 4a is formed on the left end surface of the cylindrical portion 4a of the drive lever 14 penetrating the casting work shaft 1, and the recessed portion 4 of the manually operated rod 2 is formed on the recessed portion 4b. 2b) is engaged.

14 is a sectional view showing the main parts of the driving lever 14, the casting working shaft 1, and the casting working shaft 1 and the manual operating rod 2, respectively. As shown in FIG. 14, the casting shaft 1 which is rotatably supported by the bearing 13 is formed with a circumference 1a along the periphery, and a hole 4d drilled in the drive lever 4. The first pin 12 fitted in the) is engaged with this groove 1a. For this reason, the drive lever 4 is rotatable around the casting work shaft 1, but the slide in the axial direction (arrow B direction) is prohibited.

In addition, as shown in Fig. 14, the engagement between the casting shaft 1 and the manual operation shelf 2 is the second pin 11 disposed so as to penetrate the vicinity of the left end of the casting shaft 1 up and down. The two holes 2c and 2c formed at both ends of the upper and lower ends of the manual operating rod 2 are engaged with each other. The holes 2c and 2c are formed in the axial direction of the casting work shaft 1. The same direction as the (arrow B direction) is formed so that the longitudinal direction may be carried out. For this reason, the manual operation rod 2 is slidable by the length of the longitudinal direction of the long hole 2c, 2c.

FIG. 15 is an enlarged side view of the main part of the disconnecting device operating mechanism shown in FIG. 13. As shown in FIG. 15, a groove 2d is formed on the outer circumferential surface of the manual operation rod 2, and this groove 2d is shown. The projection 3a of the clutch operating plate 3 is engaged. Accordingly, the manual operating rod 2 is rotatable about the casting axis 1, but the projection 3a of the clutch operating plate 3 engages the groove 2d of the manual operating rod 2, Therefore, the movement of the casting shaft 1 in the axial direction (arrow B direction) is prohibited. The clutch operating plate 3 is axially supported by the attachment table 9 and is rotatable about the axis 3c. The clutch operating plate 3 inserts a rod-shaped clutch operating handle (not shown) into the hole 3d formed in the arc-shaped surface of the clutch operating plate 3 shown in the front view of FIG. It rotates by FIG.

In this way, by rotating the clutch operating plate 3 in the direction of arrow C, the manual operation rod 2 moves in the direction of arrow B. FIG. The main part side view of FIG. 16 shows the state at the time of rotating the clutch operating plate 3 to arrow C direction. As shown in FIG. 17, by rotating the clutch operating plate 3 in the direction of arrow C, the clutch mechanism by the convex portion 2b of the manual operation rod 2 and the recessed portion 4b of the drive lever 4 Break out of engagement.

The operation of the disconnecting device operating mechanism according to the embodiment of the present invention configured as described above will be described.

The above-mentioned operation mechanism for the disconnector shown in FIGS. 12 to 15 shows the individuality state of the disconnector 15. 17 is a front view of each of the operating mechanism for the disconnecting device, which shows the closed state and FIG. 18 shows the grounded state. The transition from the open state shown in FIG. 12 to the closed state shown in FIG. 17 is in accordance with the rotational operation in the direction of arrow A at a predetermined angle (about 60 degrees) of the lever 7a of the contact opening and closing device 7 as described above. It is done by.

In the individual state of the disconnector 15 shown in FIG. 12, when the contact 8 of the secondary side converter of the disconnector 15 is set to the "ground" position, as described in the description of FIG. 16, the clutch operation is performed. By rotating the plate 3 in the direction of arrow C to release the clutch mechanism of the recessed portion 4b of the drive lever 4 and the convex portion 2b of the manual operation rod 2, the cast shaft 1 is driven. By (4), it becomes a state which cannot open and close operation.

Next, a ground handle (not shown) is attached to the projection 2a formed on the manual operation rod 2, and the manual operation rod 2 is rotated clockwise in FIG. Rotate). As the casting work shaft 1 rotates to the ground side, the contact 8 of the secondary side converter becomes the position of the contact 8b of the "ground" position indicated by the dashed-dotted line in FIG. The secondary converter is grounded. 18 is a front view of the disconnecting contact operating device brought into the ground state at this time. The operation from the "ground" position of the contact 8 of the secondary converter to the "off" position is performed by the operation inversely to the above operation.

In the present embodiment, the opening and closing means refers to the drive lever 4 and the connecting rod 6, the ground means means the manual operation rod.

As described above, according to the present invention, since the clutch operation lever for separating the manual operation shaft is provided, the clutch can be easily and smoothly switched, which is the switching between the on-off operation and the on-ground operation.

Moreover, according to another invention, since the operation mechanism for 3-position disconnector was comprised using the crank, there exists an effect which can obtain the apparatus of a simple structure and easy operation.

Moreover, according to another invention, since the operation mechanism for the 3-position disconnector is configured by using a crank instead of the clutch, there is an effect that a device having a simple configuration and easy operation can be obtained.

Moreover, the operation mechanism for disconnectors of another invention arranges a separation means, for example, a clutch operation plate, and a clutch mechanism which disengages the opening / closing means and the grounding means, thereby ensuring the switching operation and the grounding operation between the grounding operation between the opening and closing operations of the disconnecting device. There is an effect that can be easily performed.

Claims (6)

At least one driving device, a main shaft connected to the movable contact portion of the three-position disconnector, a link mechanism connecting the driving device and the main shaft, and manual operation means connected to the link mechanism, and on-off operation of the three-position disconnector. And the off-ground operation of the 3-position disconnector is performed between the drive mechanism and the link mechanism connected to the main shaft with respect to the link mechanism connected to the drive device between the off-position of the 3-position disconnector and the ground position. And an off-ground operation by relatively displacing the manual operation means. Insert the driven lever into the main shaft connected to the movable contact of the disconnector, and then insert the manual operation shaft into the main shaft with the pin, and align the groove-shaped hole and the main shaft with the pin open in the axial direction. The groove is formed in the circumferential direction of the manual operation shaft, while the groove is formed in the circumferential direction of the manual operation shaft, while the groove is formed in the groove of the manual operation shaft, And a clutch operation lever having a mating pin disposed therein. 3. The operation mechanism for a disconnecting device according to claim 2, wherein a concave mold is provided on the manual operating shaft, and an iron mold on which the concavity of the manual operating shaft is fitted is provided on the driven lever. A crank lever having a main shaft connected to the movable contact portion of the disconnecting unit, and having a long hole protruding in the shape of a female from the main shaft and opened toward the axial direction of the main shaft, and having a female portion and rotatably mounted on the main shaft. A crank having two driven levers and two shafts parallel and eccentric with each other, the one of which is rotatably connected to the long hole of the crank lever and the other of which to rotate through the arm of the driven lever; Operation mechanism for disconnectors characterized in that it comprises a. A crank lever having a main shaft connected to the movable contact portion of the disconnecting unit, a long hole which protrudes in the shape of a rotor arm to the main shaft, and is opened toward the axial direction of the main shaft, and has a female portion and is rotatably mounted on the main shaft. A driven lever and two shafts parallel to each other and eccentric, each of which has a shaft connected to the crank lever's long hole and the other shaft rotated through the arm of the driven lever, respectively. An operation mechanism for a disconnector, characterized by having a crank. A driving means for receiving the opening and closing command between the primary converter and the secondary converter, the opening means for driving the casting work shaft to be operated by the driving force of the driving means and to open and close the primary converter and the secondary converter; It has a clutch mechanism removable to the opening and closing means, and when the engagement with the opening and closing means transmits the driving force of the driving means to the casting shaft, and when the engagement with the opening and closing means is peeled off by operating the casting shaft 1 And a disconnecting means for grounding the secondary side converter separated from the vehicle side converter, and a disconnecting means that always engages with the grounding means and disengages the grounding means from the opening and closing means.