CN114899031A - Operating mechanism of switch cabinet equipment - Google Patents

Abstract

The application relates to the field of vacuum circuit breakers, in particular to an operating mechanism of switch cabinet equipment, which has the technical scheme that: the switch cabinet equipment operating mechanism comprises a mounting plate, a first connecting piece hinged with the mounting plate, a connecting rod hinged with the first connecting piece and a driving assembly for driving the first connecting piece to rotate on the mounting plate, wherein the connecting rod is hinged with a fixing assembly for fixing a moving contact of the vacuum circuit breaker; the purposes of reducing the processing difficulty of the operating mechanism of the switch cabinet and prolonging the service life of the operating mechanism of the switch cabinet are achieved.

Description

Operating mechanism of switch cabinet equipment

Technical Field

The application relates to the field of vacuum circuit breakers, in particular to an operating mechanism of switch cabinet equipment.

Background

The high-voltage switch cabinet is one of important equipment for power grid power transmission and distribution in a power system, and the switch cabinet equipment operating mechanism is an extremely important operating device used for guaranteeing the power grid power transmission and distribution in the high-voltage switch cabinet.

Referring to fig. 1, an operating mechanism of a switch cabinet device described in the related art includes a first link 13 fixedly connected to a moving contact of a vacuum circuit breaker 6, a mounting plate 1 fixed inside a switch cabinet body, i.e., a cabinet body 10, and a second link 14 hinged to an upper end of the first link 13; a horizontally arranged supporting pin 12 is fixedly connected to one end of the second connecting rod 14, which is far away from the first connecting rod 13, an involute-shaped guide hole 8 is formed in the mounting plate 1, the supporting pin 12 is inserted into the guide hole 8 and can slide in the guide hole 8, and a limiting part for limiting the first connecting rod 13 to move up and down only in the vertical direction is arranged in the cabinet body 10; the moving contact is electrically connected with a conductive terminal 111 at an electrical interface of the three-position switch 11 through a moving end copper bar 9.

When the vacuum circuit breaker 6 needs to be controlled to be turned off, the supporting pin 12 is driven to slide in the guide hole 8, in the process, the supporting pin 12 drives the upper end of the second connecting rod 14 to move along the extending direction of the guide hole 8, the lower end of the second connecting rod 14 then drives the first connecting rod 13 to move upwards for 1-2mm under the action of the limiting part, and the first connecting rod 13 drives the moving contact of the vacuum circuit breaker 6 to upwards separate from the fixed contact so as to turn off the vacuum circuit breaker 6.

In view of the above-mentioned related art solutions, the inventors found that: on one hand, the machining precision requirement of the guide hole 8 is high, and the shape of the guide hole 8 is complex, so that the machining difficulty of the guide hole 8 is high; on the other hand, the in-process that supporting pin 12 slided inside the guiding hole 8, supporting pin 12 constantly with the pore wall of guiding hole 8 with it sliding friction, the pore wall of guiding hole 8 will produce wearing and tearing after a period of time, will make the precision decline that reciprocates of first connecting rod 13 like this, because the removal stroke precision that first connecting rod 13 drove the moving contact is at the millimeter level, therefore the wearing and tearing of 8 pore walls of guiding hole will cause harmful effects to the accurate opening and shutting of vacuum circuit breaker 6, cubical switchboard operating device's life is lower.

Disclosure of Invention

In order to reduce cubical switchboard operating device's the processing degree of difficulty and improve cubical switchboard operating device's life, this application provides a cubical switchboard equipment operating device.

The application provides a cubical switchboard equipment operating device adopts following technical scheme:

the utility model provides a cubical switchboard equipment operating device, includes the mounting panel, link the first even piece mutually articulated with the mounting panel, link the articulated connecting rod mutually with first link to and be used for driving first link pivoted drive assembly on the mounting panel, it has the fixed subassembly that is used for fixed vacuum circuit breaker's moving contact to articulate on the connecting rod, be provided with the uide pin on the connecting rod, the guiding hole has been seted up on the mounting panel, the uide pin can slide along vacuum circuit breaker's moving contact moving direction in the guiding hole inside.

By adopting the technical scheme, only abrasion in the horizontal direction exists between the guide pin and the wall of the guide hole, the moving direction of the moving contact of the vacuum circuit breaker is in the vertical direction, and the influence on the displacement of the moving contact of the vacuum circuit breaker, namely the displacement of the moving contact of the vacuum circuit breaker, caused by the abrasion in the horizontal direction between the guide pin and the wall of the guide hole is greatly reduced, so that the service life of the operating mechanism of the switch cabinet is prolonged; in addition, the guiding hole of this application is compared in involute-shaped guiding hole processing degree of difficulty greatly reduced, and then has reduced whole cubical switchboard operating device's the processing degree of difficulty.

Optionally, the driving assembly includes a second connecting piece hinged to the first connecting piece, a driving piece is hinged to the second connecting piece, and a transmission main shaft is fixed on the driving piece.

Through adopting above-mentioned technical scheme, the transmission main shaft drives the rotation of driving plate dead axle, and the driving plate drives the second and links the piece and be planar motion, and the second links the piece and stimulates the pin joint between first even piece and the connecting rod and makes the swing of first link dead axle, and the lower extreme of above-mentioned in-process connecting rod vertically removes under the guide action of uide pin and guiding hole mutually supporting, and then drives vacuum circuit breaker's moving contact and reciprocate.

Optionally, the fixing assembly includes a connecting shaft hinged to the connecting rod, and a moving contact of the vacuum circuit breaker is fixed to the connecting shaft; a movable end copper bar is fixed on the connecting shaft and used for conducting electricity between the three-position switch and a movable contact of the vacuum circuit breaker.

Through adopting above-mentioned technical scheme, the lower extreme of connecting rod drives the connecting axle and reciprocates, and the connecting axle and then drives vacuum circuit breaker's moving contact and reciprocate, and moves the one end that the end copper bar is close to the connecting axle at this in-process and produce the small deformation in the vertical side to guarantee to move the end copper bar and switch on with vacuum circuit breaker's moving contact constantly.

Optionally, a first spring seat and an over travel spring are sleeved on the connecting shaft, a second spring seat is further arranged on the connecting shaft, and the over travel spring is compressed between the first spring seat and the second spring seat; first spring holder and connecting axle sliding connection, the uide pin can promote first spring holder to the direction removal of being close to the second spring holder, has seted up the round pin shaft hole on the connecting axle, and the uide pin can be inside along the axial slip of connecting axle in round pin shaft hole.

Through adopting above-mentioned technical scheme, under the elastic potential energy effect of over travel spring accumulation, constantly to the moving contact effect decurrent pressure of vacuum circuit breaker, and then hinder vacuum circuit breaker's moving contact from top to bottom to make a round trip to vibrate.

Optionally, the end of the connecting shaft is screwed with a stud bolt, the stud bolt is provided with two first nuts and two pressing blocks for pressing and fixing the movable end copper bar, and the movable contact of the vacuum circuit breaker is fixed on the stud bolt.

Optionally, a second nut is screwed on the stud bolt, and the second nut is pressed on the end face of the connecting shaft.

Through adopting above-mentioned technical scheme, stud is screwed up and is twisted there is the second nut, and the upper surface laminating of second nut is on the lower terminal surface of connecting axle, can provide the pretightning force for the threaded connection relation between stud and the connecting axle like this, reduces the possibility that becomes flexible each other between connecting axle and the stud.

Optionally, a sealing shaft for realizing sealed rotary connection between the transmission main shaft and the cabinet body is arranged on the transmission main shaft.

Through adopting above-mentioned technical scheme, improve the sealing performance of the internal portion of cabinet, prevent that dust etc. from getting into the internal portion of cabinet and causing the interference to the inside electronic components of solid.

Optionally, at least one first anti-rotation plane is formed on the circumferential surface of the connecting shaft, and at least one second anti-rotation plane attached to the first anti-rotation plane is formed on the first spring seat.

Through adopting above-mentioned technical scheme, prevent that the uide pin from the round pin axle inslot from breaking away from the back, take place rotation each other between first spring holder and the connecting axle and lead to the uide pin to be difficult to get into the round pin axle groove once more.

In summary, the present application has the following technical effects:

1. the installation plate, the first connecting piece, the connecting rod, the driving assembly and the guide pin are arranged, and the guide hole is formed, so that only abrasion in the horizontal direction exists between the guide pin and the hole wall of the guide hole, the moving direction of the movable contact of the vacuum circuit breaker is in the vertical direction, and the influence of the abrasion in the horizontal direction between the guide pin and the hole wall of the guide hole on the displacement of the guide pin in the vertical direction, namely the displacement of the movable contact of the vacuum circuit breaker is greatly reduced, so that the service life of the operating mechanism of the switch cabinet is prolonged;

2. through having set up first spring holder, overtravel spring and second spring holder, under the elastic potential energy effect of overtravel spring accumulation, constantly to vacuum circuit breaker's moving contact effect decurrent pressure, and then the moving contact that hinders vacuum circuit breaker makes a round trip to vibrate from top to bottom.

Drawings

Fig. 1 is a mechanical schematic diagram of a switchgear operating mechanism described in the related art;

fig. 2 is a schematic overall structure diagram of a switch cabinet in the embodiment of the present application;

FIG. 3 is an enlarged view of a portion of FIG. 2 at A;

fig. 4 is a schematic perspective view of an operating mechanism of a switchgear apparatus in an embodiment of the present application;

FIG. 5 is a partial enlarged view at B in FIG. 4;

fig. 6 is a perspective view of an operating mechanism of a switchgear apparatus in an embodiment of the present application, in which a first spring seat is shown in a cut-away view;

FIG. 7 is an enlarged view of a portion of FIG. 6 at C;

fig. 8 is a schematic view of the mounting structure of the link, the guide pin, the connecting shaft, and the first spring seat in the embodiment of the present application.

In the figure, 1, mounting plate; 2. a first connecting piece; 3. a connecting rod; 4. a drive assembly; 41. a second connecting piece; 42. a transmission main shaft; 43. a driving plate; 44. a seal shaft; 5. a fixing assembly; 51. a connecting shaft; 511. a pin shaft hole; 512. a first anti-rotation plane; 52. a first spring seat; 521. a pin shaft slot; 522. a second anti-rotation plane; 53. an over travel spring; 54. a second spring seat; 56. a stud bolt; 57. a first nut; 58. a compression block; 59. a second nut; 6. a vacuum circuit breaker; 7. a guide pin; 8. a guide hole; 9. a movable end copper bar; 10. a cabinet body; 11. a three-position switch; 111. a conductive terminal; 12. a support pin; 13. a first link; 14. a second link.

Detailed Description

In the description of the present application, it is to be noted that the terms "upper", "lower", "vertical", "horizontal", and the like are based on the relative relationships shown in the drawings, and are only for convenience of describing the present invention and simplifying the description, but do not indicate or imply that the process or module referred to must have a specific orientation, state, and operation, and thus, should not be construed as limiting the present invention.

The present application is described in further detail below with reference to the attached drawings.

Referring to fig. 2, the application provides a switch cabinet, which includes a cabinet body 10, three-position switches 11 vertically fixed on the cabinet body 10, and three vacuum circuit breakers 6 vertically arranged inside the cabinet body 10, wherein the three-position switches 11 are arranged outside the cabinet body 10, but conductive terminals 111 of the three-position switches 11 extend towards the inside of the cabinet body 10, a housing of the vacuum circuit breaker 6 is fixed on the cabinet body 10, a moving end copper bar 9 for realizing conductive connection between interfaces of the vacuum circuit breaker 6 and the three-position switches 11 is arranged between a moving contact of the vacuum circuit breaker 6 and the conductive terminals 111, and three switch cabinet equipment operating mechanisms respectively used for driving the moving contact of the corresponding vacuum circuit breaker 6 to move up and down to realize the opening and closing of the moving contact and the fixed contact of the vacuum circuit breaker 6 are also arranged inside the cabinet body 10; when the moving contact and the fixed contact of the vacuum circuit breaker 6 are contacted with each other, the circuit between the three-position switch 11 and the vacuum circuit breaker 6 is conducted.

Specifically, referring to fig. 3 and 4, the operating mechanism of the switch cabinet device includes two mounting plates 1 vertically fixed inside the cabinet body 10, a first connecting piece 2 and a connecting rod 3 arranged between the two mounting plates 1, wherein the first connecting piece 2 is hinged to the mounting plates 1, and the connecting rod 3 is arranged below the first connecting piece 2 and hinged to the first connecting piece 2; the connecting rod 3 is provided with a guide pin 7 with a horizontal axis, the guide pin 7 can be fixed or hinged on the connecting rod 3, and the guide pin 7 is positioned below a hinged point between the connecting rod 3 and the first connecting piece 2; the operating mechanism of the switch cabinet equipment also comprises a driving component 4 for driving the first connecting piece 2 to swing around a hinge point between the first connecting piece 2 and the mounting plate 1; offer on the mounting panel 1 and supply the uide pin 7 male guiding hole 8, guiding hole 8 is for following the half waist type hole that vertical direction extends, like this when first even piece 2 swings around the pin joint between self and the mounting panel 1, first even piece 2 will drive connecting rod 3 and be planar motion between two mounting panels 1 for the lower extreme removal orbit of connecting rod 3 is vertical direction under the mating reaction of uide pin 7 and guiding hole 8.

In view of the above, set up the fixed subassembly 5 that is used for making the two reciprocal anchorage between the moving contact of vacuum circuit breaker 6 and the lower extreme of connecting rod 3, the lower extreme of connecting rod 3 is at the in-process that reciprocates, and vacuum circuit breaker 6's moving contact reciprocates thereupon, and then realizes the deciliter between vacuum circuit breaker 6's moving contact and the static contact.

Compared with the switch cabinet equipment operating mechanism recorded in the related art, only abrasion in the horizontal direction exists between the guide pin 7 and the hole wall of the guide hole 8, the moving direction of the moving contact of the vacuum circuit breaker 6 is in the vertical direction, and the influence on the displacement of the moving contact of the vacuum circuit breaker 6 is greatly reduced due to the abrasion in the horizontal direction between the guide pin 7 and the hole wall of the guide hole 8 on the displacement of the guide pin 7 in the vertical direction, so that the service life of the switch cabinet operating mechanism is prolonged.

In addition, the supporting pin 12 of the operating mechanism of the switch cabinet equipment in the related art is completely overlapped on the hole wall of the guiding hole 8, so that the supporting pin 12, the first connecting rod 13, the second connecting rod 14, the gravity load of the movable contact of the vacuum circuit breaker 6 and the resistance load generated in the process of driving the movable contact of the vacuum circuit breaker 6 to move almost completely act on the hole wall of the guiding hole 8, and further the abrasion of the hole wall of the guiding hole 8 is aggravated; in the application, the gravity load direction of the movable contact of the supporting pin 12, the connecting rod 3, the fixed component 5 and the vacuum circuit breaker 6 is the same as the hole wall extending direction of the guide hole 8, only the action of the horizontal component of the resistance load generated in the moving process of the movable contact of the vacuum circuit breaker 6 is driven, and the hole wall abrasion degree of the guide hole 8 is slowed down compared with that in the related technology.

Compare in involute shape or curved guiding hole 8, the processing degree of difficulty of the guiding hole 8 of this application sharp extension is obviously greatly reduced.

Referring to fig. 4, specifically, the driving assembly 4 in this embodiment includes a second connecting piece 41 hinged to the first connecting piece 2, a driving piece 43 hinged to an end of the second connecting piece 41 away from the first connecting piece 2, and a transmission main shaft 42 for driving the driving piece 43 to rotate in a fixed axis manner, the transmission main shaft 42 is rotatably connected to the cabinet 10, the driving piece 43 is fixed on the transmission main shaft 42, the transmission main shaft 42 is rotatably connected to the cabinet, and the transmission main shaft 42 is made of an insulating material, such as plastic with good insulating property; in order to improve the sealing performance inside the cabinet 10, a sealing shaft 44 is arranged at the connecting position between the transmission main shaft 42 and the cabinet 10; the hinge point between the first connecting piece 2 and the second connecting piece 41 can be overlapped or not overlapped with the hinge point between the first connecting piece 2 and the connecting rod 3, and the two hinge points are overlapped with each other and share the same hinge shaft for the convenience of production and processing; the transmission main shaft 42 is driven by a motor and the like to rotate around the axis of the transmission main shaft 42 in a fixed-shaft mode, the driving sheet 43 then rotates around the axis of the transmission main shaft 42 in a fixed-shaft mode, the driving sheet 43 transmits torque to the first connecting sheet 2 through the second connecting sheet 41, and the first connecting sheet 2 further swings around a hinge point between the first connecting sheet 2 and the mounting plate 1. The three driving assemblies 4 share the same transmission main shaft 42, so that the simultaneous opening and closing of the three vacuum circuit breakers 6 are realized conveniently.

In other embodiments, the driving assembly 4 comprises a transmission main shaft 42 coaxial with the hinge point between the first link 2 and the mounting plate 1, and the transmission main shaft 42 directly drives the first link 2 to swing.

Referring to fig. 4 and 5, the fixing assembly 5 includes a connecting shaft 51 hinged to the connecting rod 3, the connecting shaft 51 is vertically disposed, and a hinge shaft between the connecting shaft 51 and the connecting rod 3 is a guide pin 7; a stud bolt 56 is screwed at the lower end of the connecting shaft 51, a first nut 57 and a pressing block 58 are screwed at the lower end of the stud bolt 56, the stud bolt 56 penetrates through the movable end copper bar 9, the movable end copper bar 9 is pressed and fixed between the first nut 57 and the pressing block 58, and a movable contact of the vacuum circuit breaker 6 is fixed at the lower end of the stud bolt 56. The connecting rod 3 drives the connecting shaft 51 to move up and down, the connecting shaft 51 further drives the moving contact of the vacuum circuit breaker 6 to move up and down through the stud 56, and in the process, the first nut 57 and the pressing block 58 enable the moving end copper bar 9 to generate elastic deformation so that the end part of the moving end copper bar 9 can move up and down by 1-2 mm.

Referring to fig. 6 to 8, in the process of opening and closing the moving contact and the fixed contact of the vacuum circuit breaker 6, the moving contact is prone to vibrate up and down, and thus the contact stability between the moving contact and the fixed contact is affected. Therefore, a first spring seat 52 connected with the connecting shaft 51 in a sliding manner is sleeved on the connecting shaft 51, a pin shaft hole 511 through which the guide pin 7 can pass is formed in the connecting shaft 51, the pin shaft hole 511 is a kidney-shaped hole, the length direction of the pin shaft hole 511 is the sliding direction of the guide pin 7 in the guide hole 8, namely the vertical direction, a pin shaft groove 521 is formed in the first spring seat 52, and the pin shaft groove 521 penetrates through the upper end face of the first spring seat 52 along the radial direction of the first spring seat 52; a second spring seat 54 integrally formed with the connecting shaft 51 is coaxially arranged on the connecting shaft 51, the second spring seat 54 is arranged near the lower end of the connecting shaft 51, and an over-travel spring 53 compressed between the first spring seat 52 and the second spring seat 54 is coaxially sleeved on the connecting shaft 51.

When the moving contact of the vacuum circuit breaker 6 needs to move downwards to contact the fixed contact, the first connecting piece 2 swings with a fixed shaft and drives the swing rod to do plane motion, in the process, the guide pin 7 moves downwards in the guide hole 8, the guide pin 7 abuts against the bottom of the pin shaft groove 521, the guide pin 7 presses the first spring seat 52 downwards, in the process, the first spring seat 52 compresses the overtravel spring 53 downwards, the overtravel spring 53 further presses the second spring seat 54 downwards, and the second spring seat 54 drives the connecting shaft 51 to move downwards, so that the moving contact of the vacuum circuit breaker 6 moves downwards; when the moving contact of the vacuum circuit breaker 6 contacts the fixed contact, the transmission main shaft 42 stops rotating, and downward pressure is constantly applied to the moving contact of the vacuum circuit breaker 6 under the action of the elastic potential energy accumulated by the over-travel spring 53, so that the moving contact of the vacuum circuit breaker 6 is prevented from vibrating back and forth.

When the moving contact of the vacuum circuit breaker 6 needs to move upwards to be separated from the fixed contact, the first connecting piece 2 swings reversely, the guide pin 7 moves upwards until the guide pin 7 is pressed against the upper hole wall of the pin shaft hole 511, the guide pin 7 drives the connecting shaft 51 to move upwards, the connecting shaft 51 further drives the moving contact of the vacuum circuit breaker 6 to move upwards through the stud 56, the over travel spring 53 continuously releases elastic potential energy and pushes the first spring seat 52 to move upwards in the process, finally, the lower groove wall of the pin shaft groove 521 is attached to the guide pin 7 again, the over travel spring 53 at the moment is still compressed between the first spring seat 52 and the second spring seat 54, and downward pressure is constantly exerted on the moving contact of the vacuum circuit breaker 6 under the action of the compressed elastic potential energy accumulated by the over travel spring 53, so that the moving contact of the vacuum circuit breaker 6 is prevented from vibrating back and forth.

Referring to fig. 8, in order to prevent the guide pin 7 from being separated from the pin groove 521, the first spring seat 52 and the connecting shaft 51 rotate relative to each other, so that the guide pin 7 is difficult to enter the pin groove 521 again, two first anti-rotation planes 512 are formed on the circumferential surface of the connecting shaft 51 in a cutting manner, the first anti-rotation planes 512 are arranged oppositely, the first anti-rotation planes 512 are parallel to the axial direction of the connecting shaft 51, two second anti-rotation planes 522 are formed on the first spring seat 52 in a cutting manner, and are respectively attached to the corresponding first anti-rotation planes 521, so that the anti-rotation function between the first spring seat 52 and the connecting shaft 51 is achieved.

Wherein, a crank arm extending along the radial direction of the transmission main shaft 42 is formed on the driving sheet 43, and when the moving contact of the vacuum circuit breaker 6 is contacted with the static contact, the position of the crank arm is recorded as A; when the moving contact of the vacuum circuit breaker 6 moves up by 1-2mm to be separated from the fixed contact, the position of the crank arm at the moment is recorded as B, the circumferential included angle between the position A and the position B along the transmission main shaft 42 is 20-30 degrees, in the embodiment, 27 degrees is selected, namely, the moving contact stroke of the vacuum circuit breaker 6 is 1-2mm, and the rotation angle of the transmission main shaft 42 is 27 degrees in the process of switching between two stations.

Referring to fig. 5, the stud 56 is screwed with the second nut 59, and the upper surface of the second nut 59 is attached to the lower end surface of the connecting shaft 51, so that a pretightening force can be provided for the threaded connection between the stud 56 and the connecting shaft 51, and the possibility of mutual looseness between the connecting shaft 51 and the stud 56 is reduced; in addition, the moving contact of the vacuum circuit breaker 6 can move up and down with reduced precision after a long time, and the degree of compression of the over travel spring 53 can be adjusted by adjusting the height of the second nut 59, or the extension length of the stud 56 outside the connecting shaft 51 can be adjusted.

The present embodiment is only for explaining the present application, and it is not limited to the present application, and those skilled in the art can make modifications of the present embodiment without inventive contribution as needed after reading the present specification, but all of them are protected by patent law within the scope of the claims of the present application.

Claims (8)

1. The utility model provides a cubical switchboard equipment operating device which characterized in that: the vacuum circuit breaker moving contact device comprises a mounting plate (1), a first connecting piece (2) hinged to the mounting plate (1), a connecting rod (3) hinged to the first connecting piece (2), and a driving assembly (4) used for driving the first connecting piece (2) to rotate on the mounting plate (1), a fixing assembly (5) used for fixing the moving contact of a vacuum circuit breaker (6) is hinged to the connecting rod (3), a guide pin (7) is arranged on the connecting rod (3), a guide hole (8) is formed in the mounting plate (1), and the guide pin (7) can slide in the guide hole (8) along the moving contact moving direction of the vacuum circuit breaker (6).

2. The switchgear apparatus operating mechanism of claim 1, wherein: the driving assembly (4) comprises a second connecting piece (41) hinged with the first connecting piece (2), a driving piece (43) is hinged on the second connecting piece (41), and a transmission main shaft (42) is fixed on the driving piece (43).

3. The switchgear apparatus operating mechanism of claim 1, wherein: the fixed component (5) comprises a connecting shaft (51) hinged with the connecting rod (3), and a moving contact of the vacuum circuit breaker (6) is fixed on the connecting shaft (51); a movable end copper bar (9) is fixed on the connecting shaft (51), and the movable end copper bar (9) is used for conducting electricity between the three-position switch (11) and the movable contact of the vacuum circuit breaker (6).

4. The switchgear apparatus operating mechanism of claim 3, wherein: a first spring seat (52) and an over travel spring (53) are sleeved on the connecting shaft (51), a second spring seat (54) is further arranged on the connecting shaft (51), and the over travel spring (53) is compressed between the first spring seat (52) and the second spring seat (54); the first spring seat (52) is connected with the connecting shaft (51) in a sliding mode, the guide pin (7) can push the first spring seat (52) to move towards the direction close to the second spring seat (54), a pin shaft hole (511) is formed in the connecting shaft (51), and the guide pin (7) can slide in the pin shaft hole (511) along the axial direction of the connecting shaft (51).

5. The switchgear device operating mechanism according to claim 3 or 4, characterized in that: the end part of the connecting shaft (51) is in threaded connection with a stud bolt (56), the stud bolt (56) is provided with a first nut (57) and a pressing block (58) which are used for pressing and fixing the movable end copper bar (9), and the movable contact of the vacuum circuit breaker (6) is fixed on the stud bolt (56).

6. The switchgear apparatus operating mechanism of claim 5, wherein: a second nut (59) is screwed on the stud bolt (56), and the second nut (59) is pressed on the end face of the connecting shaft (51).

7. The switchgear apparatus operating mechanism of claim 2, wherein: the transmission main shaft (42) is provided with a sealing shaft (44) which is used for realizing sealed rotary connection between the transmission main shaft (42) and the cabinet body (10).

8. The switchgear apparatus operating mechanism of claim 4, wherein: at least one first anti-rotation plane (512) is formed on the circumferential surface of the connecting shaft (51), and at least one second anti-rotation plane (522) attached to the first anti-rotation plane (512) is formed on the first spring seat (52).

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