Connecting device and switch cabinet

Abstract

The invention belongs to the technical field of electrical equipment, and discloses a connecting device and a switch cabinet. The switch cabinet comprises a cabinet body, a main busbar, a transformer and a connecting device, the connecting device is arranged in the cabinet body and specifically comprises a bracket structure, a driving assembly and a plurality of conductive blocks, the plurality of conductive blocks are arranged on the bracket structure at intervals by arranging the driving assembly and the bracket structure, and one end of each conductive block is connected with a wire. The wire is electrically connected with a transformer; the bracket structure is connected with the driving assembly, the driving assembly is used for driving the bracket structure to move, so that the other end of the conductive block is in contact with and electrically connected with the main busbar or separated from the main busbar, multiple conductive blocks are operated at the same time at a time, the conductive blocks do not need to be operated one by one, operation steps are simplified, and efficiency is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of electrical equipment, and particularly to a connecting device and a switch cabinet. Background Art

[0002] A transformer is a device that uses the principle of electromagnetic induction to change the AC voltage. When a transformer is connected to a switch cabinet, it needs to be connected through a main busbar.

[0003] In the prior art, a transformer is connected to a conductive block through a connecting wire, and the conductive block and a clamping plate are fixedly connected through a fixing block. First, the push plate is pulled forward and the spring is compressed to drive the fixing column to move forward. Then, the conductive block is inserted into the connection groove of the main busbar body and the clamping plate is inserted into the slot of the main busbar body. After that, the push plate is released, and the fixing column passes through the through hole of the clamping plate and is inserted into the fixing groove of the main busbar body by the reset action of the spring, so that the main busbar can be connected to the transformer through the conductive block. In this process, it is necessary to operate multiple conductive blocks one by one, and the operation steps are relatively cumbersome and the efficiency is low.

[0004] Therefore, there is an urgent need to provide a connecting device and a switch cabinet to operate multiple conductive blocks simultaneously at one time, simplify the operation steps and improve the efficiency. Summary of the Invention

[0005] The purpose of the present invention is to provide a connecting device and a switch cabinet to operate multiple conductive blocks simultaneously at one time, simplify the operation steps and improve the efficiency.

[0006] To achieve this purpose, the present invention adopts the following technical solutions:

[0007] The present invention provides a connecting device for being arranged in the cabinet body of a switch cabinet. A main busbar and a transformer are fixed in the cabinet body. The connecting device includes a bracket structure, a driving component and a plurality of conductive blocks. The plurality of conductive blocks are arranged on the bracket structure at intervals. One end of each conductive block is connected with a wire, and the wire is used for electrically connecting with the transformer. The bracket structure is connected with the driving component, and the driving component is used for driving the bracket structure to move so that the other end of the conductive block contacts and is electrically connected with the main busbar or is separated from the main busbar.

[0008] As an optional technical solution of the connecting device, the driving component includes a rotating shaft and a gear. The rotating shaft is used for rotatably connecting with the cabinet body, the gear is arranged on the rotating shaft, and a toothed plate meshing with the gear is arranged on the bracket structure. The rotation of the rotating shaft drives the gear to rotate, and the rotation of the gear drives the toothed plate to move so as to move the conductive block.

[0009] As an alternative technical solution of a connection device, the bracket structure includes a support plate and a fixing plate. The support plate is fixed to one side of the fixing plate, and a toothed plate is provided on the other side of the fixing plate. The conductive block is arranged on the support plate.

[0010] As an alternative technical solution of a connection device, a plurality of grooves are provided on the bracket structure, and the grooves are arranged in one-to-one correspondence with the conductive blocks, and the conductive blocks are clamped in the grooves.

[0011] As an alternative technical solution of a connection device, a socket communicating with the groove is further provided on the bracket structure. One end of the wire is fixedly connected to the transformer, and the other end of the wire passes through the socket and is fixedly connected to the conductive block.

[0012] As an alternative technical solution of a connection device, the driving assembly further includes a driving member located outside the cabinet body. One end of the rotating shaft extends out of the cabinet body and is connected to the driving member, and the driving member is used to drive the rotating shaft to rotate.

[0013] As an alternative technical solution of a connection device, the connection device further includes a locking structure. The locking structure is arranged on the cabinet body, and the locking structure selectively locks the driving member on the cabinet body to limit the rotation of the driving member.

[0014] As an alternative technical solution of a connection device, the connection device further includes two positioning plugs. First positioning holes are formed on both sides of the bracket structure, and second positioning holes are formed on the cabinet body. The second positioning holes are arranged in one-to-one correspondence with the first positioning holes. Each positioning plug detachably passes through the second positioning hole and is inserted into the corresponding first positioning hole.

[0015] As an alternative technical solution of a connection device, the positioning plug includes a plug rod, a positioning disc and a handle. The plug rod and the handle are respectively fixed on both sides of the positioning disc. The plug rod passes through the second positioning hole and is inserted into the first positioning hole, and the positioning disc fits against the outer side surface of the cabinet body.

[0016] The present invention provides a switch cabinet, which includes a cabinet body, a main busbar, a transformer and the above-mentioned connection device.

[0017] Beneficial effects:

[0018] The present invention provides a connection device for being arranged inside a switch cabinet. A main busbar and a transformer are fixed inside the switch cabinet. The connection device includes a bracket structure, a driving component, and a plurality of conductive blocks. The plurality of conductive blocks are arranged on the bracket structure at intervals. One end of each conductive block is connected with a wire, and the wire is used for electrically connecting with the transformer. The bracket structure is connected with the driving component, and the driving component is used for driving the bracket structure to move, so that the other end of the conductive block contacts and is electrically connected with the main busbar or is separated from the main busbar. By arranging the driving component and the bracket structure, the plurality of conductive blocks are placed on the bracket structure at intervals. One end of each conductive block is electrically connected with the transformer through a wire. The driving component is used for driving the bracket structure to move inside the switch cabinet, so that the other end of the conductive block contacts and is electrically connected with the main busbar or is separated from the main busbar, and a plurality of conductive blocks are operated simultaneously at one time without operating each conductive block one by one, thus simplifying the operation steps and improving the efficiency.

[0019] The present invention provides a switch cabinet, which includes a cabinet body, a main busbar, a transformer, and the above-mentioned connection device. By arranging the connection device, a plurality of conductive blocks can be operated simultaneously at one time, simplifying the operation steps and improving the efficiency. Brief Description of the Drawings

[0020] Figure 1 is a schematic structural diagram of the switch cabinet provided by an embodiment of the present invention;

[0021] Figure 2 is a sectional view of the switch cabinet from a first perspective provided by an embodiment of the present invention;

[0022] Figure 3 is a schematic structural diagram of the main busbar and the conductive block provided by an embodiment of the present invention;

[0023] Figure 4 is a sectional view of the switch cabinet from a second perspective provided by an embodiment of the present invention;

[0024] Figure 5 is a partial schematic structural diagram of the switch cabinet provided by an embodiment of the present invention;

[0025] Figure 6 is a sectional view of the switch cabinet from a third perspective provided by an embodiment of the present invention;

[0026] Figure 7 is a sectional view of the switch cabinet from a fourth perspective provided by an embodiment of the present invention.

[0027] In the figures:

[0028] 11. Cabinet body; 112. Ventilation pipe; 113. Dust-proof net; 114. Mounting plate; 115. Cabinet door; 116. Cabinet door handle; 117. Fan;

[0029] 12. Main busbar; 13. Transformer; 14. Conductive block; 15. Wire;

[0030] 20. Bracket structure; 21. Support plate; 211. Groove; 212. Socket; 22. Fixed plate; 221. First positioning hole; 23. Tooth plate; 24. Auxiliary plate;

[0031] 30. Driving assembly; 31. Rotating shaft; 32. Gear; 33. Driving member; 331. Rotating part; 332. Handle part;

[0032] 40. Positioning plug-in; 41. Plug rod; 42. Positioning disk; 43. Handle; 431. Connecting part; 432. Operating rod part. Detailed implementation manner

[0033] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It can be understood that the specific embodiments described herein are only used to explain the present invention, rather than limiting the present invention. In addition, it should be noted that, for the sake of convenience of description, only the parts related to the present invention rather than all the structures are shown in the drawings.

[0034] In the description of the present invention, unless otherwise clearly defined and limited, the terms "connected", "connected", and "fixed" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0035] In the present invention, unless otherwise clearly defined and limited, the first feature being "above" or "below" the second feature may include the direct contact between the first and second features, or may include the situation where the first and second features are not in direct contact but in contact through other features between them. Moreover, the first feature being "above", "above", and "on the top" of the second feature includes that the first feature is directly above and obliquely above the second feature, or merely means that the horizontal height of the first feature is higher than that of the second feature. The first feature being "below", "below", and "under the bottom" of the second feature includes that the first feature is directly below and obliquely below the second feature, or merely means that the horizontal height of the first feature is lower than that of the second feature.

[0036] In the description of this embodiment, the orientation or positional relationship such as "above", "below", "left", and "right" is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of description and simplifying the operation, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, so it cannot be understood as a limitation to the present invention. In addition, the terms "first" and "second" are only used for distinction in description and have no special meaning.

[0037] As shown Figures 1 to 7 in FIG. 1, the present invention provides a connection device and a switch cabinet. The switch cabinet includes a cabinet body 11, a main busbar 12, a transformer 13 and a connection device. The connection device is arranged in the cabinet body 11 of the switch cabinet. The main busbar 12 and the transformer 13 are both fixed in the cabinet body 11. The connection device includes a bracket structure 20, a driving assembly 30 and a plurality of conductive blocks 14. The plurality of conductive blocks 14 are arranged on the bracket structure 20 at intervals. One end of the conductive block 14 is connected with a wire 15, and the wire 15 is used for electrically connecting with the transformer 13. The bracket structure 20 is connected with the driving assembly 30, and the driving assembly 30 is used for driving the bracket structure 20 to move, so that the other end of the conductive block 14 contacts and electrically connects with the main busbar 12 or separates from the main busbar 12.

[0038] By arranging the driving assembly 30 and the bracket structure 20, the plurality of conductive blocks 14 are placed on the bracket structure 20 at intervals. One end of the conductive block 14 is electrically connected with the transformer 13 through the wire 15. The driving assembly 30 is used to drive the bracket structure 20 to move in the cabinet body 11, so that the other end of the conductive block 14 contacts and electrically connects with the main busbar 12 or separates from the main busbar 12. The operations on the plurality of conductive blocks 14 are carried out simultaneously at one time, without operating each conductive block 14 one by one, which simplifies the operation steps and improves the efficiency.

[0039] Referring to Figure 1 FIG. 2, two cabinet doors 115 are further arranged on the cabinet body 11. One side of the two cabinet doors 115 away from each other is hinged to the cabinet body 11; a cabinet door handle 116 is arranged on the cabinet door 115. By pulling the cabinet door handle 116, the cabinet door 115 is opened, providing a suitable force application position for the cabinet door 115.

[0040] Referring to Figure 3 FIG. 3, in this embodiment, the transformer 13 is fixed on the inner bottom wall of the cabinet body 11, and the main busbar 12 is fixed on the inner top wall of the cabinet body 11; a plurality of receiving grooves are arranged at the bottom of the main busbar 12. The shape of the receiving groove matches the shape of the conductive block 14. The conductive block 14 can be inserted into or removed from the receiving groove. The depth of the receiving groove is less than the thickness of the conductive block 14. When the bracket structure 20 moves and gradually approaches the main busbar 12, the conductive block 14 located on the bracket structure 20 gradually inserts into the receiving groove of the main busbar 12, and the conductive block 14 contacts the groove wall of the receiving groove, and then electrically connects with the main busbar 12; when the bracket structure 20 moves and moves away from the main busbar 12, the conductive block 14 is separated from the main busbar 12.

[0041] Further, the driving assembly 30 includes a rotating shaft 31 and a gear 32. The rotating shaft 31 is used for rotatably connecting with the cabinet body 11. The gear 32 is arranged on the rotating shaft 31. A toothed plate 23 meshing with the gear 32 is provided on the bracket structure 20. The rotation of the rotating shaft 31 drives the rotation of the gear 32, and the rotation of the gear 32 drives the toothed plate 23 to move, so as to move the conductive block 14. By providing the rotating shaft 31 and the gear 32, the rotation of the rotating shaft 31 drives the rotation of the gear 32, and the rotation of the gear 32 drives the toothed plate 23 on the bracket structure 20 to move, thereby driving the conductive block 14 to move. The structure is simple, and high-precision motion transmission can be achieved, ensuring the smoothness of the movement of the bracket structure 20 and the conductive block 14. In other embodiments, a hydraulic drive or a motor can also be used to drive the bracket structure 20 to move.

[0042] Specifically, the bracket structure 20 includes a support plate 21 and a fixing plate 22. The support plate 21 is fixed to one side of the fixing plate 22. Toothed plates 23 are provided on both sides of the fixing plate 22. The conductive block 14 is arranged on the support plate 21. By respectively providing the support plate 21 and the toothed plate 23 on both sides of the fixing plate 22, the support plate 21 located on one side of the fixing plate 22 is used for placing the conductive block 14, and the toothed plate 23 located on the other side of the fixing plate 22 is used for meshing with the gear 32 of the driving assembly 30, so that the meshing of the toothed plate 23 and the gear 32 and the setting of the conductive block 14 do not interfere with each other.

[0043] In this embodiment, the support plate 21 and the fixing plate 22 are of an integral structure, and the toothed plate 23 is embedded and fixed on the fixing plate 22; the support plate 21 extends in the horizontal direction, the fixing plate 22 extends in the vertical direction, the support plate 21 is connected to the middle of the fixing plate 22, and the overall cross-section of the toothed plate 23 and the fixing plate 22 is T-shaped; two toothed plates 23 are arranged side by side at intervals, and two corresponding gears 32 are also provided; the rotating shaft 31 extends in the horizontal direction, and the two gears 32 are symmetrically distributed with respect to the middle position of the rotating shaft 31; when the rotating shaft 31 rotates, the gear 32 meshes with the toothed plate 23, thereby driving the bracket structure 20 to lift and lower in the cabinet body 11 in the vertical direction. Among them, the toothed plate 23 and the fixing plate 22 can be fixed by welding.

[0044] In this embodiment, the bracket structure 20 further includes an auxiliary plate 24. The auxiliary plate 24 is attached to and fixed on the side of the fixing plate 22 where the support plate 21 is provided, and the auxiliary plate 24 is arranged above the support plate 21; the bottom surface of the auxiliary plate 24 is attached to the surface of the support plate 21, and the top surface of the auxiliary plate 24 is flush with the top surface of the fixing plate 22; for the bracket structure 20, the toothed plate 23 meshes with the gear 32, and the side of the auxiliary plate 24 away from the toothed plate 23 abuts against the main busbar 12, and the auxiliary plate 24 can move relative to the main busbar 12. In other embodiments, in order to ensure the stability of the bracket structure 20, a guide rail or the like can also be provided to limit the moving direction of the bracket structure 20.

[0045] Optionally, a plurality of grooves 211 are provided on the bracket structure 20, and the grooves 211 are arranged in one-to-one correspondence with the conductive blocks 14, and the conductive blocks 14 are clamped in the grooves 211. In this embodiment, the grooves 211 are provided on the support plate 21. By providing the grooves 211 on the bracket structure 20 and clamping the conductive blocks 14 in the grooves 211, the position of the conductive blocks 14 can be accurately restricted, and the displacement of the conductive blocks 14 can be avoided when the bracket structure 20 moves, so that the conductive blocks 14 can be accurately inserted into the main busbar 12.

[0046] Optionally, the bracket structure 20 is further provided with sockets 212 communicating with the grooves 211. One end of the wire 15 is fixedly connected to the transformer 13, and the other end of the wire 15 passes through the socket 212 and is fixedly connected to the conductive block 14. In this embodiment, both the conductive blocks 14 and the wires 15 are provided with five, and the corresponding grooves 211 and sockets 212 are also provided with five.

[0047] By providing the sockets 212, after the wire 15 is fixed to the conductive block 14, when the conductive block 14 is placed in the groove 211, the wire 15 is inserted into the bracket structure 20 from the socket 212 at the same time, which can ensure that each wire 15 is clearly distinguished, clearly arranged in an orderly manner, avoid the wires 15 from crossing and being chaotic, and help to reduce the occurrence of faults.

[0048] For the convenience of the staff to operate, the driving assembly 30 further includes a driving member 33. The driving member 33 is located outside the cabinet body 11. One end of the rotating shaft 31 extends out of the cabinet body 11 and is connected to the driving member 33, and the driving member 33 is used to drive the rotating shaft 31 to rotate. By providing the driving member 33 outside the cabinet body 11 and using the driving member 33 to drive the rotating shaft 31 to rotate, the internal space of the cabinet body 11 can be saved, and it is also convenient to maintain the driving member 33.

[0049] In this embodiment, the driving member 33 can be a rotating handle, and the rotating handle is fixedly connected to the rotating shaft 31; the staff can hold the rotating handle and drive the rotating shaft 31 to rotate by rotating the rotating handle. In other embodiments, the driving member 33 can also be a motor.

[0050] See Figure 5 , the driving member 33 includes a rotating part 331 and a handle part 332. The rotating part 331 is in the shape of a circular plate, and the rotating shaft 31 and the handle part 332 are respectively fixed on both sides of the rotating part 331. The rotating shaft 31 is connected to the center position of the rotating part 331, and the handle part 332 is connected to the edge position of the rotating part 331.

[0051] By providing the rotating part 331 and the handle part 332, when the handle part 332 rotates, it drives the rotating part 331 and the rotating shaft 31 to rotate. By connecting the rotating shaft 31 and the handle part 332 to different positions of the rotating part 331, the rotating part 331 can provide a good force-bearing position, which is convenient for operation.

[0052] Furthermore, the connecting device further includes two positioning plugs 40. First positioning holes 221 are formed on both sides of the bracket structure 20. Second positioning holes are formed on the cabinet body 11, and the second positioning holes are arranged in one-to-one correspondence with the first positioning holes 221. Each positioning plug 40 detachably passes through the second positioning hole and is inserted into the corresponding first positioning hole 221. By arranging the positioning plugs 40 on both sides of the cabinet body 11, the positioning plugs 40 can pass through the second positioning holes of the cabinet body 11 and be inserted into the first positioning holes 221 of the bracket structure 20, thereby restricting the further movement of the bracket structure 20 relative to the cabinet body 11 and achieving positioning.

[0053] In this embodiment, one second positioning hole is respectively formed on both side plates of the cabinet body 11, and one first positioning hole 221 is also respectively formed on both sides of the fixing plate 22, and the two first positioning holes 221 are not communicated with each other.

[0054] Optionally, the positioning plug 40 includes an insertion rod 41, a positioning disk 42 and a handle 43. The insertion rod 41 and the handle 43 are respectively fixed on both sides of the positioning disk 42. The insertion rod 41 passes through the second positioning hole and is inserted into the first positioning hole 221, and the positioning disk 42 is attached to the outer side surface of the cabinet body 11. By arranging the positioning plug 40 with the positioning disk 42 and the handle 43, the staff holds the handle 43 and inserts the insertion rod 41 into the second positioning hole and the first positioning hole 221 until the positioning disk 42 is attached to the outer side surface of the cabinet body 11, which is convenient for plugging and unplugging operations, and can easily and smoothly insert or extract the positioning plug 40, and can restrict the insertion depth and insertion direction of the insertion rod 41.

[0055] For easy operation, the handle 43 includes a connecting portion 431 and an operating rod portion 432. One end of the connecting portion 431 is connected to the positioning disk 42 and the other end is connected to the middle of the operating rod portion 431. The connecting portion 432 extends in a direction perpendicular to the positioning disk 42, and the operating rod portion 432 intersects with the extending direction of the connecting portion 431. By arranging the connecting portion 431 and the operating rod portion 432, the handle 43 can provide sufficient holding space.

[0056] In this embodiment, the positioning disk 42 is in the shape of a circular plate, the insertion rod 41 and the connecting portion 431 are both in the shape of a cylinder, and the cross section of the operating rod portion 432 is in the shape of a rectangle.

[0057] Optionally, the connecting device further includes a locking structure disposed on the cabinet body 11. The locking structure selectively locks the driving member 33 to the cabinet body 11 to restrict the rotation of the driving member 33. By providing the locking structure on the cabinet body 11, when the conductive block 14 contacts and is electrically connected to the main bus bar 12, the driving member 33 is locked to the cabinet body 11 by using the locking structure, thereby restricting the continuous rotation of the driving member 33, and thus realizing the positioning of the bracket structure 20; adding a locking structure on the basis of setting the positioning plug-in 40 can realize the double positioning of the bracket structure 20. Among them, the locking structure is detachably fixed to the cabinet body 11 by means of bolts, clamping, etc. The locking structure can restrict the rotation of the driving member 33 by clamping or plugging cooperation with the rotating part 331 or the handle part 332, such as a bolt; the locking structure can also adopt a mechanically or electronically controlled lock structure to restrict the rotation of the driving member 33.

[0058] Optionally, a ventilation pipe 112 is embedded and fixed on the cabinet body 11. The internal space of the cabinet body 11 communicates with the external environment through the ventilation pipe 112, and a dust-proof net 113 is provided on the inner wall of the ventilation pipe 112. Through the ventilation pipe 112 with the dust-proof net 113 on the cabinet body 11, air can flow between the external environment and the inside of the cabinet body 11, facilitating the heat dissipation inside the cabinet body 11 and ensuring that the electrical facilities inside the cabinet body 11 will not stop operating due to excessive heat. The dust-proof net 113 can effectively prevent impurities from entering the cabinet body 11.

[0059] In this embodiment, a ventilation pipe 112 is respectively embedded and fixed on both sides of the cabinet body 11, and dust-proof nets 113 are provided on the inner walls of the two ventilation pipes 112; an installation plate 114 is further fixed on the inner wall of one of the ventilation pipes 112. The installation plate 114 is located on the side of the dust-proof net 113 facing the inside of the cabinet body 11, and a fan 117 is provided on the installation plate 114. The fan 117 is located between the installation plate 114 and the dust-proof net 113; the installation plate 114 is in a cross shape.

[0060] By providing the cross-shaped installation plate 114 and the fan 117, the air flow inside the cabinet body 11 can be driven by the fan 117, thereby accelerating the dissipation of heat.

[0061] The following is the specific use process of the connecting device:

[0062] Fix one end of the wire 15 on the transformer 13, fix the other end of the wire 15 on the conductive block 14. After connecting each wire 15 and the corresponding conductive block 14, place the conductive block 14 in the groove 211 on the support plate 21, and insert the corresponding wire 15 into the socket 212; Extract the positioning plug-in 40, and use the driving member 33 to drive the rotating shaft 31 to rotate. At this time, the gear 32 meshes with the toothed plate 23, and then pushes the bracket structure 20 to rise in the cabinet body 11 and gradually approach the main busbar 12; As the driving member 33 rotates, the conductive block 14 rises and is inserted into the corresponding receiving groove at the bottom of the main busbar 12 (see Figure 7 ), and finally insert the positioning plug-in 40 through the second positioning hole of the cabinet body 11 and into the first positioning hole 221 of the bracket structure 20 to realize the positioning of the bracket structure 20, and the bracket structure 20 cannot continue to rise and fall; Subsequently, if the positioning plug-in 40 is extracted and the driving member 33 is used to drive the rotating shaft 31 to rotate in the reverse direction, the bracket structure 20 will descend in the cabinet body 11, and then the conductive block 14 will gradually separate from the main busbar 12.

[0063] Obviously, the above embodiments of the present invention are only examples for clearly explaining the present invention, rather than limiting the implementation manners of the present invention. For those of ordinary skill in the art, various obvious changes, re-adjustments and substitutions can be made without departing from the protection scope of the present invention. It is not necessary and impossible to enumerate all the implementation manners here. Any modifications, equivalent substitutions and improvements made within the spirit and principle of the present invention shall be included in the protection scope of the claims of the present invention.

Claims

1. A connection device, used for being arranged in a cabinet body (11) of a switch cabinet, wherein a main busbar (12) and a transformer (13) are fixed in the cabinet body (11), characterized in that: The connection device comprises a bracket structure (20), a drive assembly (30) and a plurality of conductive blocks (14), wherein the plurality of conductive blocks (14) are arranged at intervals on the bracket structure (20), one end of the conductive block (14) is connected to a wire (15), the wire (15) is used to be electrically connected to the transformer (13), the bracket structure (20) is connected to the drive assembly (30), and the drive assembly (30) is used to drive the bracket structure (20) to move so that the other end of the conductive block (14) contacts and is electrically connected to the main busbar (12) or is separated from the main busbar (12).

2. The connection device according to claim 1, characterized in that: The driving assembly (30) comprises a rotating shaft (31) and a gear (32); the rotating shaft (31) is used to be rotatably connected to the cabinet (11); the gear (32) is arranged on the rotating shaft (31); a toothed plate (23) meshing with the gear (32) is arranged on the bracket structure (20); the rotating shaft (31) rotates to drive the gear (32) to rotate; the gear (32) rotates to drive the toothed plate (23) to move, so that the conductive block (14) moves.

3. The connection device according to claim 2, characterized in that: The bracket structure (20) comprises a support plate (21) and a fixing plate (22); the support plate (21) is fixed to one side of the fixing plate (22); the tooth plate (23) is provided on the other side of the fixing plate (22); and the conductive block (14) is provided on the support plate (21).

4. The connection device according to claim 1, characterized in that: The bracket structure (20) is provided with a plurality of grooves (211), the grooves (211) being arranged in a one-to-one correspondence with the conductive blocks (14), and the conductive blocks (14) being clamped in the grooves (211).

5. The connection device according to claim 4, characterized in that: The bracket structure (20) is also provided with a socket (212) in communication with the groove (211); one end of the wire (15) is fixedly connected to the transformer (13); the other end of the wire (15) is passed through the socket (212) and fixedly connected to the conductive block (14).

6. The connection device according to claim 2, characterized in that: The driving assembly (30) further comprises a driving member (33) located outside the cabinet (11); one end of the rotating shaft (31) extends out of the cabinet (11) and is connected to the driving member (33); the driving member (33) is used to drive the rotating shaft (31) to rotate.

7. The connection device according to claim 6, characterized in that: The connection device further comprises a locking structure, the locking structure being arranged on the cabinet (11), the locking structure selectively locking the driving member (33) on the cabinet (11) to restrict the rotation of the driving member (33).

8. The connection device according to claim 2, characterized in that: The connection device further comprises two positioning plug-ins (40), first positioning holes (221) are provided on both sides of the bracket structure (20), a second positioning hole is provided on the cabinet body (11), the second positioning holes are arranged in a one-to-one correspondence with the first positioning holes (221), and each positioning plug-in (40) is detachably passed through the second positioning hole and inserted into the corresponding first positioning hole (221).

9. The connection device according to claim 8, characterized in that: The positioning plug-in unit (40) comprises an insertion rod (41), a positioning plate (42) and a handle (43); the insertion rod (41) and the handle (43) are respectively fixed to two sides of the positioning plate (42); the insertion rod (41) passes through the second positioning hole and is inserted into the first positioning hole (221); and the positioning plate (42) is attached to the outer side surface of the cabinet (11).

10. A switch cabinet, characterized in that: It comprises a cabinet (11), a main busbar (12), a transformer (13), and a connecting device as claimed in any one of claims 1 to 9.

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