A switch cabinet equipment operating mechanism

Abstract

The application relates to the field of vacuum circuit breakers, in particular to a switch cabinet equipment operating mechanism, which has the technical scheme as follows: the switch cabinet equipment operating mechanism comprises a mounting plate, a first connecting piece hinged to the mounting plate, a connecting rod hinged to the first connecting piece, and a driving assembly used for driving the first connecting piece to rotate on the mounting plate, a fixing assembly used for fixing a moving contact of a vacuum circuit breaker is hinged to the connecting rod, a guide pin is arranged on the connecting rod, a guide hole is arranged on the mounting plate, and the guide pin can slide in the guide hole along the moving direction of the moving contact of the vacuum circuit breaker; the machining difficulty of the switch cabinet operating mechanism is reduced, and the service life of the switch cabinet operating mechanism is prolonged.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of vacuum circuit breakers, in particular to a switch cabinet equipment operating mechanism. BACKGROUND

[0002] The high-voltage switch cabinet is one of the important devices for power transmission and distribution in the power grid system, and the switch cabinet equipment operating mechanism is a very important operating device in the high-voltage switch cabinet for ensuring power transmission and distribution in the power grid system.

[0003] Reference Figure 1 The related art discloses a switch cabinet equipment operating mechanism, which comprises a first connecting rod 13 fixedly connected with a moving contact of a vacuum circuit breaker 6, a mounting plate 1 fixed in a cabinet body 10, and a second connecting rod 14 hingedly connected with an upper end of the first connecting rod 13; a support pin 12 horizontally arranged is fixed to an end of the second connecting rod 14 away from the first connecting rod 13, a guide hole 8 in the shape of an involute is formed in the mounting plate 1, the support pin 12 is inserted into the guide hole 8 and can slide in the guide hole 8, and a limiting piece is arranged in the cabinet body 10 to limit the first connecting rod 13 to move only in the vertical direction; the moving contact and a conductive terminal 111 at an electrical interface of a three-position switch 11 are electrically connected through a moving end copper bar 9.

[0004] When it is necessary to control the vacuum circuit breaker 6 to be turned off, the support pin 12 is driven to slide in the guide hole 8, and in this process, the support pin 12 drives the upper end of the second connecting rod 14 to move along the extension direction of the guide hole 8, and the lower end of the second connecting rod 14 in turn drives the first connecting rod 13 to move upward by 1-2 mm under the action of the limiting piece, and the first connecting rod 13 drives the moving contact of the vacuum circuit breaker 6 to move upward to separate from a static contact, so as to realize the turning off of the vacuum circuit breaker 6.

[0005] For the above-mentioned related technical solution, the inventors find that on the one hand, the machining precision requirement of the guide hole 8 is high, and the shape of the guide hole 8 is complex, so the machining difficulty of the guide hole 8 is high; on the other hand, in the process of sliding of the support pin 12 in the guide hole 8, the support pin 12 is always in contact with and slides against the hole wall of the guide hole 8, and after a period of time, the hole wall of the guide hole 8 will be worn, which will reduce the up-down movement precision of the first connecting rod 13, and since the movement stroke precision of the first connecting rod 13 driving the moving contact is in the millimeter level, the wear of the hole wall of the guide hole 8 will adversely affect the precise opening and closing of the vacuum circuit breaker 6, and the service life of the switch cabinet operating mechanism is low. SUMMARY

[0006] In order to reduce the machining difficulty of the switch cabinet operating mechanism and improve the service life of the switch cabinet operating mechanism, the present application provides a switch cabinet equipment operating mechanism.

[0007] The switch cabinet equipment operating mechanism provided by the application adopts the following technical scheme:

[0008] The switch cabinet equipment operating mechanism comprises a mounting plate, a first connecting plate hinged to the mounting plate, a connecting rod hinged to the first connecting plate, and a driving assembly for driving the first connecting plate to rotate on the mounting plate, the connecting rod is hinged with a fixing assembly for fixing a moving contact of a vacuum circuit breaker, the connecting rod is provided with a guide pin, the mounting plate is provided with a guide hole, and the guide pin can slide in the guide hole along the moving direction of the moving contact of the vacuum circuit breaker.

[0009] By adopting the above technical scheme, the wear between the guide pin and the guide hole wall is only in the horizontal direction, and the moving direction of the moving contact of the vacuum circuit breaker is the vertical direction, so that the influence of the wear between the guide pin and the guide hole wall in the horizontal direction on the displacement of the guide pin in the vertical direction, i.e., on the displacement of the moving contact of the vacuum circuit breaker, is greatly reduced, thereby improving the service life of the switch cabinet operating mechanism; in addition, the guide hole of the application greatly reduces the processing difficulty compared with the involute guide hole, thereby reducing the processing difficulty of the entire switch cabinet operating mechanism.

[0010] Optionally, the driving assembly comprises a second connecting plate hinged to the first connecting plate, the second connecting plate is hinged with a driving piece, and the driving piece is fixed with a transmission main shaft.

[0011] By adopting the above technical scheme, the transmission main shaft drives the driving piece to rotate around the axis, the driving piece drives the second connecting plate to move in the plane, the second connecting plate pulls the hinge joint between the first connecting plate and the connecting rod and makes the first connecting plate swing around the axis, and in the above process, the lower end of the connecting rod moves vertically under the guidance of the guide pin and the guide hole, thereby driving the moving contact of the vacuum circuit breaker to move up and down.

[0012] Optionally, the fixing assembly comprises a connecting shaft hinged to the connecting rod, and the moving contact of the vacuum circuit breaker is fixed on the connecting shaft; the connecting shaft is fixed with a moving end copper bar, and the moving end copper bar is used for conducting electricity between the three-position switch and the moving contact of the vacuum circuit breaker.

[0013] By adopting the above technical scheme, the lower end of the connecting rod drives the connecting shaft to move up and down, and the connecting shaft in turn drives the moving contact of the vacuum circuit breaker to move up and down, and in this process, the end of the moving end copper bar close to the connecting shaft produces a slight deformation in the vertical direction, so as to ensure that the moving end copper bar is always in conduction with the moving contact of the vacuum circuit breaker.

[0014] Optionally, the connecting shaft is sleeved with a first spring seat and an overtravel spring, and the connecting shaft is further provided with a second spring seat, and the overtravel spring is compressed between the first spring seat and the second spring seat; the first spring seat is in sliding connection with the connecting shaft, the guide pin can push the first spring seat to move towards the second spring seat, and the connecting shaft is provided with a pin hole, and the guide pin can slide in the pin hole along the axial direction of the connecting shaft.

[0015] By adopting the above technical scheme, under the action of the elastic potential energy accumulated by the overtravel spring, the dynamic contact of the vacuum circuit breaker is always subjected to downward pressure, thereby hindering the up-and-down vibration of the dynamic contact of the vacuum circuit breaker.

[0016] Optionally, the end of the connecting shaft is screwed with a stud bolt, the stud bolt is provided with two first nuts and a pressing block for pressing and fixing the dynamic copper bar, and the dynamic contact of the vacuum circuit breaker is fixed on the stud bolt.

[0017] Optionally, the stud bolt is screwed with a second nut, and the second nut is pressed on the end surface of the connecting shaft.

[0018] By adopting the above technical scheme, the stud bolt is screwed with a second nut, and the upper surface of the second nut is attached to the lower end surface of the connecting shaft, so that the pre-tightening force can be provided for the threaded connection relationship between the stud bolt and the connecting shaft, and the possibility of mutual loosening between the connecting shaft and the stud bolt is reduced.

[0019] Optionally, the transmission main shaft is provided with a sealing shaft for achieving sealed rotary connection between the transmission main shaft and the cabinet body.

[0020] By adopting the above technical scheme, the sealing performance of the cabinet body is improved, and dust and the like are prevented from entering the inside of the cabinet body to interfere with the electronic components inside the cabinet body.

[0021] Optionally, the peripheral surface of the connecting shaft is formed with at least one first anti-rotation plane, and the first spring seat is formed with at least one second anti-rotation plane attached to the first anti-rotation plane.

[0022] By adopting the above technical scheme, after the guide pin is separated from the pin shaft slot, the first spring seat and the connecting shaft are prevented from rotating relative to each other to cause the guide pin to be difficult to enter the pin shaft slot again.

[0023] In summary, the present application has the following technical effects:

[0024] 1. By setting the mounting plate, the first connecting piece, the connecting rod, the driving assembly, the guide pin and the guide hole, the guide pin and the guide hole wall only have horizontal wear, and the moving direction of the moving contact of the vacuum circuit breaker is vertical, the wear between the guide pin and the guide hole wall in the horizontal direction greatly reduces the displacement of the guide pin in the vertical direction, that is, the displacement of the moving contact of the vacuum circuit breaker, thereby prolonging the service life of the switch cabinet operating mechanism; 2. By setting the first spring seat, the overtravel spring and the second spring seat, under the action of the elastic potential energy accumulated by the overtravel spring, the moving contact of the vacuum circuit breaker is always subjected to downward pressure, thereby preventing the moving contact of the vacuum circuit breaker from vibrating up and down. BRIEF DESCRIPTION OF DRAWINGS

[0025] Figure 1 is a mechanism diagram of a switch cabinet equipment operating mechanism described in the related art;

[0026] Figure 2 is a whole structure schematic diagram of a switch cabinet in the embodiment of the application;

[0027] Figure 3 is Figure 2 is a partial enlarged view of A in

[0028] Figure 4 is a three-dimensional structure schematic diagram of a switch cabinet equipment operating mechanism in the embodiment of the application;

[0029] Figure 5 is Figure 4 is a partial enlarged view of B in

[0030] Figure 6 is a three-dimensional structure schematic diagram of a switch cabinet equipment operating mechanism in the embodiment of the application, and the first spring seat in the figure is shown in section;

[0031] Figure 7 is Figure 6 is a partial enlarged view of C in

[0032] Figure 8 is a mounting structure schematic diagram of the connecting rod, the guide pin, the connecting shaft and the first spring seat in the embodiment of the application.

[0033] In the figure, 1, mounting plate; 2, first connecting piece; 3, connecting rod; 4, driving assembly; 41, second connecting piece; 42, transmission main shaft; 43, driving piece; 44, sealing shaft; 5, fixing assembly; 51, connecting shaft; 511, pin shaft hole; 512, first anti-rotation plane; 52, first spring seat; 521, pin shaft groove; 522, second anti-rotation plane; 53, overtravel spring; 54, second spring seat; 56, double-headed bolt; 57, first nut; 58, pressing block; 59, second nut; 6, vacuum circuit breaker; 7, guide pin; 8, guide hole; 9, moving end copper bar; 10, cabinet body; 11, three-position switch; 111, conductive terminal; 12, supporting pin; 13, first connecting rod; 14, second connecting rod. DETAILED DESCRIPTION

[0034] In the description of the present application, it should be noted that the terms "upper", "lower", "vertical", "horizontal" and the like are based on the relative relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the processes or modules referred to must have a specific orientation, state and operation, and therefore cannot be understood as a limitation on the present application.

[0035] The present application will be further described in detail below with reference to the accompanying drawings.

[0036] Reference Figure 2 The present application provides a switch cabinet, which comprises a cabinet body 10, three 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 the conductive terminals 111 of the three-position switches 11 extend into the interior of the cabinet body 10, the housings of the vacuum circuit breakers 6 are fixed on the cabinet body 10, a moving end copper bar 9 for realizing the conductive connection between the interface of the vacuum circuit breaker 6 and the three-position switch 11 is arranged between the moving contact of the vacuum circuit breaker 6 and the conductive terminal 111, and three switch cabinet equipment operating mechanisms 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 static contact of the vacuum circuit breaker 6 are further arranged inside the cabinet body 10; when the moving contact and the static contact of the vacuum circuit breaker 6 are in contact with each other, the circuit between the three-position switch 11 and the vacuum circuit breaker 6 is conducted.

[0037] Specifically, reference is made to Figure 3 and Figure 4The switch cabinet equipment operating mechanism comprises two mounting plates 1 fixed vertically inside the cabinet body 10, a first connecting piece 2 arranged between the two mounting plates 1, and a connecting rod 3, 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 is hinged to the first connecting piece 2; an axis-horizontal guide pin 7 is arranged on the connecting rod 3, the guide pin 7 is fixed or hinged to the connecting rod 3, and the guide pin 7 is located below the hinged point between the connecting rod 3 and the first connecting piece 2; the switch cabinet equipment operating mechanism further comprises a driving assembly 4 for driving the first connecting piece 2 to swing around the hinged point between the first connecting piece 2 and the mounting plate 1; a guide hole 8 is formed in the mounting plate 1 and can be inserted by the guide pin 7, and the guide hole 8 is a half-waist type hole extending in the vertical direction, so that when the first connecting piece 2 swings around the hinged point between the first connecting piece 2 and the mounting plate 1, the first connecting piece 2 will drive the connecting rod 3 to move in the plane between the two mounting plates 1, and under the cooperation of the guide pin 7 and the guide hole 8, the moving track of the lower end of the connecting rod 3 is in the vertical direction.

[0038] Accordingly, a fixing assembly 5 is arranged between the moving contact of the vacuum circuit breaker 6 and the lower end of the connecting rod 3 for fixing them to each other, and in the process of the up-and-down movement of the lower end of the connecting rod 3, the moving contact of the vacuum circuit breaker 6 moves up and down, thereby realizing the opening and closing of the moving contact and the static contact of the vacuum circuit breaker 6.

[0039] Compared with the switch cabinet equipment operating mechanism described in the related art, only horizontal wear exists between the guide pin 7 and the hole wall of the guide hole 8, and the moving direction of the moving contact of the vacuum circuit breaker 6 is in the vertical direction, so that the horizontal wear between the guide pin 7 and the hole wall of the guide hole 8 greatly reduces the displacement of the guide pin 7 in the vertical direction, that is, the displacement of the moving contact of the vacuum circuit breaker 6, thereby improving the service life of the switch cabinet operating mechanism.

[0040] In addition, the support pin 12 of the switch cabinet equipment operating mechanism in the related art completely overlaps the hole wall of the guide hole 8, so that the gravity load of the support pin 12, the first connecting rod 13, the second connecting rod 14 and the moving contact of the vacuum circuit breaker 6, and the resistance load generated in the process of driving the moving contact of the vacuum circuit breaker 6 to move, almost all act on the hole wall of the guide hole 8, further aggravating the wear of the hole wall of the guide hole 8; while in the present application, the gravity load directions of the support pin 12, the connecting rod 3, the fixing assembly 5 and the moving contact of the vacuum circuit breaker 6 are the same as the extending direction of the hole wall of the guide hole 8, only the horizontal component of the resistance load generated in the process of driving the moving contact of the vacuum circuit breaker 6 to move acts, and the wear degree of the hole wall of the guide hole 8 is reduced compared with the related art.

[0041] Compared with the involute-shaped or arc-shaped guide hole 8, the machining difficulty of the linearly extending guide hole 8 of the present application is obviously greatly reduced.

[0042] Referring toFigure 4 Specifically, the driving assembly 4 in the embodiment comprises a second link plate 41 hingedly connected with the first link plate 2, a driving plate 43 hingedly connected with the end of the second link plate 41 away from the first link plate 2, and a transmission main shaft 42 for driving the driving plate 43 to rotate around the axis. The transmission main shaft 42 is rotationally connected with the cabinet 10, the driving plate 43 is fixed on the transmission main shaft 42, the transmission main shaft 42 is rotationally connected with the cabinet, and the transmission main shaft 42 is made of an insulating material, such as plastic with good insulation performance. In order to improve the sealing performance of the inside of 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 link plate 2 and the second link plate 41 can coincide with or not coincide with the hinge point between the first link plate 2 and the connecting rod 3. In order to facilitate the production and processing of the above-mentioned two hinge points coinciding with each other and sharing the same hinge shaft, the transmission main shaft 42 is driven to rotate around its own axis by a motor or the like, and the driving plate 43 in turn rotates around the axis of the transmission main shaft 42. The driving plate 43 transmits torque to the first link plate 2 through the second link plate 41, and the first link plate 2 in turn swings around the hinge point between itself and the mounting plate 1. The three driving assemblies 4 share the same transmission main shaft 42, and in turn facilitate the simultaneous opening and closing of the three vacuum circuit breakers 6.

[0043] In other embodiments, the driving assembly 4 comprises a transmission main shaft 42 coaxial with the hinge point between the first link plate 2 and the mounting plate 1, and the transmission main shaft 42 directly drives the first link plate 2 to swing.

[0044] Referring to Figure 4 and Figure 5 , the fixing assembly 5 comprises a connecting shaft 51 hingedly connected with the connecting rod 3, the connecting shaft 51 is vertically arranged, and the hinge shaft between the connecting shaft 51 and the connecting rod 3 is the guide pin 7. A double-headed bolt 56 is screwed to the lower end of the connecting shaft 51, a first nut 57 and a pressing block 58 are screwed to the lower end of the double-headed bolt 56, the double-headed bolt 56 penetrates the movable copper bar 9, and the movable copper bar 9 is tightly fixed between the first nut 57 and the pressing block 58. The movable contact of the vacuum circuit breaker 6 is fixed to the lower end of the double-headed bolt 56. The connecting rod 3 drives the connecting shaft 51 to move up and down, and the connecting shaft 51 in turn drives the movable contact of the vacuum circuit breaker 6 to move up and down through the double-headed bolt 56. In this process, the first nut 57 and the pressing block 58 make the movable copper bar 9 elastically deform to enable the end of the movable copper bar 9 to move up and down by 1-2 mm.

[0045] Referring to Figures 6-8But in the process of the moving contact and the static contact of the vacuum circuit breaker 6, the moving contact is prone to up and down vibration, which further affects the contact stability between the moving contact and the static contact. Therefore, the connecting shaft 51 is sleeved with the first spring seat 52 which is in sliding connection with the connecting shaft 51, the connecting shaft 51 is provided with the pin shaft hole 511 through which the guide pin 7 passes, the pin shaft hole 511 is a waist-shaped hole and the length direction of the pin shaft hole 511 is the sliding direction of the guide pin 7 in the guide hole 8, that is, the vertical direction, and the first spring seat 52 is provided with the pin shaft groove 521 which penetrates the upper end surface of the first spring seat 52 along the radial direction of the first spring seat 52; the connecting shaft 51 is coaxially provided with the second spring seat 54 which is integrally formed with the connecting shaft 51, the second spring seat 54 is arranged close to the lower end of the connecting shaft 51, and the connecting shaft 51 is coaxially sleeved with the over-travel spring 53 which is compressed between the first spring seat 52 and the second spring seat 54.

[0046] When it is needed to make the moving contact of the vacuum circuit breaker 6 move downward to contact the static contact, the first connecting piece 2 is axially swung and drives the swing rod to make plane motion, in this process, the guide pin 7 moves downward in the guide hole 8 and abuts against the groove bottom of the pin shaft groove 521, the guide pin 7 presses the first spring seat 52 downward, in this process, the first spring seat 52 compresses the over-travel spring 53 downward, the over-travel spring 53 further presses the second spring seat 54 downward, the second spring seat 54 drives the connecting shaft 51 to move downward, thereby realizing the downward movement of the moving contact of the vacuum circuit breaker 6; when the moving contact of the vacuum circuit breaker 6 contacts the static contact, the transmission main shaft 42 stops rotating, under the action of the elastic potential energy accumulated by the over-travel spring 53, the downward pressure on the moving contact of the vacuum circuit breaker 6 is always exerted, thereby hindering the up and down vibration of the moving contact of the vacuum circuit breaker 6.

[0047] When it is needed to make the moving contact of the vacuum circuit breaker 6 move upward to separate from the static contact, the first connecting piece 2 is reversely swung, the guide pin 7 moves upward until the guide pin 7 abuts against the upper hole wall of the pin shaft hole 511 first, the guide pin 7 drives the connecting shaft 51 to move upward, the connecting shaft 51 further drives the moving contact of the vacuum circuit breaker 6 to move upward through the stud bolt 56, in this process, the over-travel spring 53 continuously releases the elastic potential energy and drives the first spring seat 52 to move upward, finally, the lower groove wall of the pin shaft groove 521 is again attached to the guide pin 7, at this time, the over-travel spring 53 is still compressed between the first spring seat 52 and the second spring seat 54, similarly, under the action of the compression elastic potential energy accumulated by the over-travel spring 53, the downward pressure on the moving contact of the vacuum circuit breaker 6 is always exerted, thereby hindering the up and down vibration of the moving contact of the vacuum circuit breaker 6.

[0048] Reference Figure 8In order to prevent the guide pin 7 from being separated from the pin shaft groove 521, and the first spring seat 52 and the connecting shaft 51 from rotating relative to each other, and the guide pin 7 from being difficult to enter the pin shaft groove 521 again, two first anti-rotation planes 512 are formed on the circumferential surface of the connecting shaft 51, the first anti-rotation planes 512 are parallel to the axis direction of the connecting shaft 51, and two second anti-rotation planes 522 are formed on the first spring seat 52, the second anti-rotation planes 522 are respectively matched with the first anti-rotation planes 512, and the first spring seat 52 and the connecting shaft 51 are prevented from rotating relative to each other.

[0049] Wherein, the driving piece 43 is formed with a crank arm extending along the radial direction of the transmission main shaft 42, when the moving contact of the vacuum circuit breaker 6 contacts the static contact, the position of the crank arm at this time is recorded as A; when the moving contact of the vacuum circuit breaker 6 moves up by 1-2 mm to separate from the static contact, the position of the crank arm at this time is recorded as B, the included angle between the position A and the position B along the circumferential direction of the transmission main shaft 42 is 20-30°, and is selected as 27° in the embodiment, that is, the stroke of the moving contact of the vacuum circuit breaker 6 is 1-2 mm, and the rotation angle of the transmission main shaft 42 during the conversion between the two stations is 27°.

[0050] Referring to Figure 5 The second nut 59 is screwed on the double-headed bolt 56, and the upper surface of the second nut 59 is matched with the lower end surface of the connecting shaft 51, so that the pre-tightening force is provided for the threaded connection relationship between the double-headed bolt 56 and the connecting shaft 51, and the possibility of mutual loosening between the connecting shaft 51 and the double-headed bolt 56 is reduced; in addition, when the up-down movement precision of the moving contact of the vacuum circuit breaker 6 decreases after a long time, the compression degree of the over-travel spring 53 can be adjusted by adjusting the up-down height of the second nut 59, or the extension length of the double-headed bolt 56 outside the connecting shaft 51 can be adjusted.

[0051] The specific embodiment is only an explanation of the application, and is not a limitation of the application, and those skilled in the art can make modifications to the embodiment without creative contribution according to the needs after reading the specification, but as long as the scope of the claims of the application is within the protection of the Patent Law.

Claims

1. A switch cabinet equipment operating mechanism, characterized in that: The invention 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) for driving the first connecting piece (2) to rotate on the mounting plate (1); a fixing assembly (5) for fixing a moving contact of a vacuum circuit breaker (6) is hinged to the connecting rod (3); a guide pin (7) is provided on the connecting rod (3); a guide hole (8) is provided on the mounting plate (1); and the guide pin (7) can slide inside the guide hole (8) along the moving direction of the moving contact of the vacuum circuit breaker (6); The fixed assembly (5) includes a connecting shaft (51) hingedly connected to the connecting rod (3), and the moving contact of the vacuum circuit breaker (6) is fixed on the connecting shaft (51); a moving end copper bar (9) is fixed on the connecting shaft (51), and the moving end copper bar (9) is used to conduct electricity between the three-position switch (11) and the moving contact of the vacuum circuit breaker (6); A first spring seat (52) and an overtravel spring (53) are sleeved on the connecting shaft (51), and a second spring seat (54) is also provided on the connecting shaft (51). The overtravel spring (53) is compressed between the first spring seat (52) and the second spring seat (54). The first spring seat (52) is slidably connected to the connecting shaft (51), and the guide pin (7) can push the first spring seat (52) to move toward the second spring seat (54). A pin hole (511) is provided on the connecting shaft (51), and the guide pin (7) can slide inside the pin hole (511) along the axial direction of the connecting shaft (51).

2. The switch cabinet equipment operating mechanism according to claim 1, characterized in that: The driving assembly (4) comprises a second connecting piece (41) hingedly connected to the first connecting piece (2); a driving piece (43) is hingedly connected to the second connecting piece (41); and a transmission main shaft (42) is fixed to the driving piece (43).

3. The switch cabinet equipment operating mechanism according to claim 1, characterized in that: The end of the connecting shaft (51) is screwed with a stud bolt (56), and the stud bolt (56) is provided with two first nuts (57) and a pressing block (58) for pressing and fixing the moving end copper bar (9), and the moving contact of the vacuum circuit breaker (6) is fixed on the stud bolt (56).

4. The switch cabinet equipment operating mechanism according to claim 3, characterized in that: A second nut (59) is screwed onto the stud bolt (56), and the second nut (59) is pressed tightly against the end surface of the connecting shaft (51).

5. The switch cabinet equipment operating mechanism according to claim 2, characterized in that: A sealing shaft (44) is provided on the transmission main shaft (42) for achieving a sealed rotation connection between the transmission main shaft (42) and the cabinet (10).

6. The switch cabinet equipment operating mechanism according to claim 1, characterized in that: 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) that fits the first anti-rotation plane (512) is formed on the first spring seat (52).

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