Switch cabinet combination auxiliary device based on large-scale power grid safety

Abstract

The invention relates to the technical field of electric power engineering, in particular to a large-scale power grid safety-based switch cabinet combination auxiliary device, which comprises a cart, and a push handle is mounted on the cart; the placing mechanism is used for placing the switch cabinet, the placing mechanism comprises a fixed plate which is fixedly installed with the cart, a movable groove is formed in the fixed plate, a movable plate is installed in the movable groove in a sliding mode, an anti-retreating plate is installed at the upper end of the movable plate in a sliding mode, and a moving mechanism used for moving the movable plate and the anti-retreating plate cooperatively is arranged on the fixed plate; and the pushing mechanism is used for cabinet combination of the switch cabinets, the pushing mechanism comprises a rotating plate rotationally installed with the cart, two alignment plates are installed at the lower end of the rotating plate, an alignment mechanism used for moving the two alignment plates is arranged on the rotating plate, and a pushing plate is jointly installed on the two alignment plates. Compared with the prior art, when the switch cabinets are combined, time and labor are saved, manpower and material resources are saved, and safety is high.

Description

Technical Field

[0001] This invention relates to the field of power engineering technology, specifically to a switchgear paralleling auxiliary device based on large-scale power grid security. Background Technology

[0002] Switchgear used for large-scale power grid security is a critical piece of equipment in power systems, and its design must meet the requirements of high security, high reliability, and intelligence. These switchgear typically employ a metal-enclosed structure, integrating core components such as circuit breakers, disconnectors, and instrument transformers, and possessing functions such as five-proof interlocking and internal arc protection. The modular design supports parallel operation, meaning that multiple switchgear units can be spliced ​​together into a unified system through standardized interfaces. Compared to independent units without parallel operation, the parallel operation mode has significant advantages: First, it forms a continuous busbar system, enabling flexible power dispatch and redundant allocation, improving power supply reliability; second, it reduces contact impedance and heating risks, enhances dynamic and thermal stability, and can withstand higher short-circuit current impacts; third, it supports on-demand capacity expansion, requiring only the addition of cabinets and connection to the original busbar for new circuits, without modifying the existing structure; fourth, it unifies protection levels and intelligent monitoring modules, facilitating centralized management and maintenance, reducing operation and maintenance costs. This design is particularly suitable for complex scenarios such as substations and industrial and mining enterprises, enabling the construction of a robust and reliable power grid architecture.

[0003] Because the switchgear is large in size, it is not convenient to hoist it when installed indoors due to the small indoor space. When merging the switchgear on the base, multiple people are needed to move the switchgear to the base, align it and install it, which is quite labor-intensive and resource-intensive. Moreover, because the switchgear is heavy, the handling and installation process is more dangerous.

[0004] Therefore, based on the above problems, we have invented a switchgear paralleling auxiliary device based on large-scale power grid security. Summary of the Invention

[0005] To address the shortcomings of existing technologies, this invention provides a switchgear paralleling auxiliary device based on large-scale power grid security, in order to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a switchgear paralleling auxiliary device based on large-scale power grid security, comprising, A trolley, on which a push handle is installed; A placement mechanism for placing switch cabinets includes a fixed plate fixedly mounted to a trolley, a movable groove on the fixed plate, a movable plate slidably mounted in the movable groove, an anti-reverse plate slidably mounted on the upper end of the movable plate, and a moving mechanism on the fixed plate for coordinated movement of the movable plate and the anti-reverse plate. A pushing mechanism is used to connect switch cabinets. The pushing mechanism includes a rotating plate rotatably mounted with a trolley. Two alignment plates are installed at the lower end of the rotating plate. An alignment mechanism for moving the two alignment plates is provided on the rotating plate. A push plate is installed on both alignment plates. A driving mechanism for driving the push plate is provided on the rotating plate. A limit rod is fixedly connected to one end of the push plate. The limit rod slides through the rotating plate.

[0007] Furthermore, the moving mechanism includes a movable screw rotatably mounted to the inner wall of the movable groove. One end of the movable screw is threadedly connected to a movable plate. The movable plate is provided with a sliding groove, and an anti-reverse screw is rotatably mounted in the sliding groove. An anti-reverse threaded block is threaded onto the external thread of the anti-reverse screw. The anti-reverse threaded block is fixedly mounted to the anti-reverse plate. One end of the anti-reverse screw rotatably passes through the movable plate and is connected to the movable screw via a gear set. The other end of the anti-reverse screw rotatably passes through the movable plate and is coaxially mounted with a return handle. A drive motor is mounted outside the fixed plate. The drive shaft of the drive motor rotatably passes through the fixed plate and is coaxially mounted with the movable screw.

[0008] Furthermore, the gear set includes an inner cylinder slidably sleeved outside the movable screw, an outer cylinder sleeved outside the inner cylinder, both the inner and outer cylinders being rotatably mounted to the outer wall of the movable plate, a first gear coaxially mounted on the outer cylinder, a second gear coaxially mounted on the outer screw, the second gear meshing with the first gear, a turning wheel fixedly mounted outside the inner cylinder, turning teeth rotatably mounted on the turning wheel, multiple wave grooves arrayed on the inner wall of the outer cylinder, the turning teeth matching the wave grooves, a groove provided on the turning wheel, a limit block slidably mounted in the groove, a limit motor mounted in the groove, the drive shaft of the limit motor being threadedly connected to the limit block, and the limit block matching the turning teeth.

[0009] Furthermore, the alignment mechanism includes an alignment groove disposed at the lower end of the rotating plate, an alignment screw is rotatably installed in the alignment groove, two alignment thread blocks are threaded onto the external thread of the alignment screw, the two alignment thread blocks are respectively fixedly connected to two alignment plates, an alignment motor is installed outside the rotating plate, and the drive shaft of the alignment motor rotates through the rotating plate and is coaxially installed with the alignment screw.

[0010] Furthermore, the driving mechanism includes two push grooves respectively disposed on the upper ends of two alignment plates. A push screw is rotatably installed in the push groove. A push thread block is threaded onto the external thread of the push screw. Both push thread blocks are slidably installed with the push plate and slidably installed with the inner walls of the two push grooves. A vertical plate is fixedly installed on the upper end of each of the two alignment plates. A drive shaft rotatably passes through the vertical plate. The drive shaft is connected to the push screw via a second bevel gear set. A square plate is fixedly installed on one side of the rotating plate. Baffles are provided on both sides of the square plate. The baffles are fixedly connected to the rotating plate. A transition shaft rotatably passes through the square plate. The two ends of the transition shaft are rotatably installed with the two baffles respectively. A power motor is installed on the baffle. The drive shaft of the power motor rotatably passes through the baffle and is coaxially installed with the transition shaft. A sliding sleeve is slidably fitted on the outside of the transition shaft. The sliding sleeve is rotatably installed with the vertical plate via two limiting baffles. The sliding sleeve is connected to the drive shaft via a first bevel gear set.

[0011] Furthermore, the second bevel gear set includes a third bevel gear and a fourth bevel gear that mesh with each other. The third bevel gear is coaxially mounted with the drive shaft, and the fourth bevel gear is coaxially mounted with the push screw.

[0012] Furthermore, the first bevel gear set includes a first bevel gear and a second bevel gear that mesh with each other. The first bevel gear is coaxially mounted with the sliding sleeve, and the second bevel gear is coaxially mounted with the transmission shaft.

[0013] Furthermore, the push plate is provided with two adjustment holes, and an adjustment screw is rotatably inserted between the two adjustment holes. Two adjustment thread blocks are threaded onto the external thread of the adjustment screw. The two adjustment thread blocks are slidably installed with the inner walls of the two adjustment holes respectively. An adjustment motor is installed on the outside of the push plate. The drive shaft of the adjustment motor rotatably passes through the push plate and is coaxially installed with the adjustment screw. Two fixing clips are installed on each of the two adjustment thread blocks. A support rod is installed at one end of the push plate, and the support rod matches the trolley.

[0014] Compared with the prior art, the present invention provides a switchgear paralleling auxiliary device based on large-scale power grid security, which has the following beneficial effects: By setting up placement and pushing mechanisms, the placement and merging of switchgear is relatively simple, and the merging operation can be completed without the cooperation of multiple people, which saves time and effort, saves manpower and material resources, and does not require manual handling or support during the merging process, thus ensuring high safety.

[0015] This application offers time-saving and labor-saving advantages when connecting switchgear cabinets, conserving manpower and resources, and ensuring high safety. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the front structure of the present invention; Figure 2 This is a side view of the placement mechanism in this invention; Figure 3 for Figure 2 Enlarged view of point A in the middle; Figure 4 This is a perspective view of the actuating wheel in this invention; Figure 5 This is a schematic diagram of the rear structure of the pushing mechanism in this invention; Figure 6 This is a front view of the pushing mechanism in this invention. Figure 7 This is a perspective view of the drive mechanism in this invention; Figure 8 for Figure 7 Enlarged view of point B in the middle; Figure 9 This is a perspective view of the rear structure of the pushing mechanism in this invention.

[0017] In the diagram: 1. Trolley; 2. Placement mechanism; 3. Pushing mechanism; 4. Push handle; 5. Fixed plate; 6. Movable plate; 7. Anti-reverse plate; 8. Slide groove; 9. Anti-reverse screw; 10. Anti-reverse threaded block; 11. Movable groove; 12. Movable screw; 13. Gear set; 14. Reverse handle; 15. Drive motor; 16. Inner cylinder; 17. Outer cylinder; 18. Actuating wheel; 19. First gear; 20. Second gear; 21. Wavy tooth groove; 22. Actuating tooth; 23. Groove; 24. Limit motor; 25. Limit block; 26. Rotating plate; 27. Alignment plate; 28. Alignment mechanism; 29. ​​Alignment threaded block; 30. Alignment 31. Screw; 32. Alignment groove; 33. Alignment motor; 34. Push plate; 35. Support rod; 36. Limiting rod; 37. Adjusting hole; 38. Adjusting threaded block; 39. Adjusting screw; 40. Fixing clamp; 41. Pushing screw; 42. Square plate; 43. Baffle; 44. Transition shaft; 45. Pushing slide; 46. Pushing threaded block; 47. Vertical plate; 48. Limiting baffle; 49. Drive shaft; 50. Sliding sleeve; 51. First bevel gear set; 52. First bevel gear; 53. Second bevel gear; 54. Third bevel gear; 55. Fourth bevel gear; 56. Second bevel gear set; 57. Power motor. Detailed Implementation

[0018] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0019] As described in the background section, there are shortcomings in the existing technology. In order to solve the above-mentioned technical problems, this application proposes a switchgear paralleling auxiliary device based on large-scale power grid security.

[0020] like Figures 1-9 As shown, a switchgear paralleling auxiliary device based on large-scale power grid security includes a trolley 1 with a push handle 4 installed on the trolley 1.

[0021] The placement mechanism 2 is used to place the switch cabinet. The placement mechanism 2 includes a fixed plate 5 that is fixedly installed with the trolley 1. The fixed plate 5 is provided with a movable groove 11. A movable plate 6 is slidably installed in the movable groove 11. An anti-retraction plate 7 is slidably installed at the upper end of the movable plate 6. The fixed plate 5 is provided with a moving mechanism for the coordinated movement of the movable plate 6 and the anti-retraction plate 7.

[0022] To place the switchgear on the base, a moving mechanism is provided. This mechanism includes a movable screw 12 rotatably mounted to the inner wall of the movable slot 11. One end of the movable screw 12 is threadedly connected to the movable plate 6. The movable plate 6 has a sliding groove 8, within which an anti-reverse screw 9 is rotatably mounted. An anti-reverse threaded block 10 is threaded onto the external side of the anti-reverse screw 9. The anti-reverse threaded block 10 is fixedly mounted to the anti-reverse plate 7. One end of the anti-reverse screw 9 rotatably passes through the movable plate 6 and is connected to the movable screw 12 via a gear set 13. It should be noted that the gear set 13 includes an inner cylinder 16 slidably sleeved outside the movable screw 12, and an outer cylinder 17 surrounding the inner cylinder 16. Both the inner cylinder 16 and the outer cylinder 17 are rotatably mounted to the outer wall of the movable plate 6. A first gear 19 is coaxially mounted on the outer cylinder 17, and the anti-reverse screw 9 is coaxially mounted on the outer side. A second gear 20 is installed, which meshes with the first gear 19. An actuating wheel 18 is fixedly installed on the outside of the inner cylinder 16. Actuating teeth 22 are rotatably installed on the actuating wheel 18. Multiple wave grooves 21 are arrayed on the inner wall of the outer cylinder 17. The actuating teeth 22 match the wave grooves 21. A groove 23 is provided on the actuating wheel 18. A limit block 25 is slidably installed in the groove 23. A limit motor 24 is installed in the groove 23. The drive shaft of the limit motor 24 is threadedly connected to the limit block 25. The limit block 25 matches the actuating teeth 22. The other end of the anti-reverse screw 9 rotates through the movable plate 6 and is coaxially installed with a return handle 14. A drive motor 15 is installed on the outside of the fixed plate 5. The drive shaft of the drive motor 15 rotates through the fixed plate 5 and is coaxially installed with the movable screw 12.

[0023] Through the above technical features: the drive motor 15 drives in the forward direction, the drive shaft of the drive motor 15 drives the movable screw 12 to rotate, the movable screw 12 drives the movable plate 6 to move, and the movable plate 6 drives the switch cabinet to move until it reaches the appropriate position. At this time, the drive motor 15 drives in the reverse direction, the drive shaft of the drive motor 15 drives the movable screw 12 to rotate, the movable screw 12 drives the movable plate 6 to move, so that the movable plate 6 moves toward the inside of the movable slot 11. The movable screw 12 drives the inner cylinder 16 to rotate, the inner cylinder 16 drives the actuating wheel 18 to rotate, the actuating wheel 18 drives the wave gear 21 to rotate through the actuating teeth 22, the wave gear 21 drives the outer cylinder 17 to rotate, and the outer cylinder 17 drives the anti-reverse screw 9 to rotate through the first gear 19 and the second gear 20. The anti-reverse screw 9... The anti-reverse threaded block 10 drives the anti-reverse plate 7 to move, and the anti-reverse plate 7 moves relative to the movable plate 6. At this time, the position of the anti-reverse plate 7 is fixed relative to the base, so the movable plate 6 can be slowly pulled away from under the switch cabinet. During the pulling process, due to the obstruction of the anti-reverse plate 7, the switch cabinet is always kept above the base. After the movable plate 6 is pulled away from under the switch cabinet, the limit block 25 is driven to move by the drive shaft of the limit motor 24, so that the limit block 25 does not limit the toggle tooth 22. At this time, the toggle wheel 18 cannot drive the wave tooth groove 21 to rotate. Then, the return handle 14 is rotated, and the return handle 14 drives the anti-reverse screw 9 to rotate. The anti-reverse screw 9 drives the anti-reverse plate 7 to move through the anti-reverse threaded block 10 until the anti-reverse plate 7 moves to the initial position.

[0024] The pushing mechanism 3 is used to connect the switch cabinets. The pushing mechanism 3 includes a rotating plate 26 that is rotatably mounted with the trolley 1. Two alignment plates 27 are installed at the lower end of the rotating plate 26. An alignment mechanism 28 for moving the two alignment plates 27 is provided on the rotating plate 26. A push plate 33 is installed on both alignment plates 27. A drive mechanism for driving the push plate 33 is provided on the rotating plate 26. A limit rod 35 is fixedly connected to one end of the push plate 33. The limit rod 35 slides through the rotating plate 26.

[0025] To align the switch cabinet with the base, an alignment mechanism 28 is provided. The alignment mechanism 28 includes an alignment groove 31 located at the lower end of the rotating plate 26. An alignment screw 30 is rotatably installed in the alignment groove 31. Two alignment threaded blocks 29 are threaded onto the external threads of the alignment screw 30. The two alignment threaded blocks 29 are fixedly connected to two alignment plates 27 respectively. An alignment motor 32 is installed outside the rotating plate 26. The drive shaft of the alignment motor 32 rotates through the rotating plate 26 and is coaxially installed with the alignment screw 30.

[0026] In this invention, the driving mechanism includes two push grooves 45 respectively disposed on the upper ends of two alignment plates 27. A push screw 41 is rotatably mounted in the push groove 45, and a push thread block 46 is threaded onto the external thread of the push screw 41. Both push thread blocks 46 are slidably mounted with the push plate 33 and slidably mounted with the inner walls of the two push grooves 45 respectively. A vertical plate 47 is fixedly mounted on the upper end of each of the two alignment plates 27. A transmission shaft 49 rotatably passes through the vertical plate 47. The transmission shaft 49 and the push screw 41 are connected by a second bevel gear set 56. It should be noted that the second bevel gear set 56 includes a third bevel gear 54 and a fourth bevel gear 55 that mesh with each other. The third bevel gear 54 is coaxially mounted with the transmission shaft 49, and the fourth bevel gear 55 is coaxially mounted with the push screw 41. One side of the rotating plate 26 is fixed. A square plate 42 is fixedly installed, and baffles 43 are provided on both sides of the square plate 42. The baffles 43 are fixedly connected to the rotating plate 26. A transition shaft 44 is rotatably installed through the square plate 42. The two ends of the transition shaft 44 are rotatably installed with the two baffles 43 respectively. A power motor 57 is installed on the baffle 43. The drive shaft of the power motor 57 rotatably passes through the baffle 43 and is coaxially installed with the transition shaft 44. A sliding sleeve 50 is slidably fitted on the outside of the transition shaft 44. The sliding sleeve 50 is rotatably installed with the vertical plate 47 through two limiting baffles 48. The sliding sleeve 50 is connected to the transmission shaft 49 through a first bevel gear set 51. It is worth mentioning that the first bevel gear set 51 includes a first bevel gear 52 and a second bevel gear 53 that mesh with each other. The first bevel gear 52 is coaxially installed with the sliding sleeve 50, and the second bevel gear 53 is coaxially installed with the transmission shaft 49.

[0027] In this invention, the push plate 33 is provided with two adjustment holes 36, and an adjustment screw 38 is rotatably inserted between the two adjustment holes 36. Two adjustment thread blocks 37 are threaded onto the external thread of the adjustment screw 38. The two adjustment thread blocks 37 are slidably installed with the inner walls of the two adjustment holes 36 respectively. An adjustment motor 39 is installed on the outside of the push plate 33. The drive shaft of the adjustment motor 39 rotatably passes through the push plate 33 and is coaxially installed with the adjustment screw 38. Two fixing clips 40 are installed on each of the two adjustment thread blocks 37. A support rod 34 is installed on one end of the push plate 33, and the support rod 34 matches the trolley 1.

[0028] Through the above technical features: After the switchgear is placed on the base, the rotating plate 26 is rotated so that the two alignment plates 27 are placed on both sides of the base. At this time, the drive shaft of the alignment motor 32 drives the alignment screw 30 to rotate. The alignment screw 30 drives the two alignment threaded blocks 29 to rotate. The alignment threaded blocks 29 drive the alignment plates 27 to move until the two alignment plates 27 are fixed to both sides of the base. Then, the switchgear is clamped by the fixing clamp 40. At this time, the drive shaft of the power motor 57 drives the transition shaft 44 to rotate. The transition shaft 44 drives the push screw 41 to rotate through the transmission shaft 49. The push screw 41 drives the push threaded block 46 to move. The push threaded block 46 drives the push plate 33 to move. The push plate 33 can then push the switchgear to move through the fixing clamp 40 until it reaches the appropriate position, thus completing the merging of the switchgear. When merging the switchgear, multiple people are not required to complete the merging operation, which is more time-saving and labor-saving, saving manpower and material resources. Moreover, the merging process does not require manual intervention, so the safety is high.

[0029] Working principle: For switch cabinet placement: Driven in the forward direction by drive motor 15, the drive shaft of drive motor 15 drives the movable screw 12 to rotate, the movable screw 12 drives the movable plate 6 to move, and the movable plate 6 drives the switch cabinet to move until it reaches the appropriate position. At this time, drive motor 15 drives in the reverse direction, the drive shaft of drive motor 15 drives the movable screw 12 to rotate, the movable screw 12 drives the movable plate 6 to move towards the inside of the movable slot 11, the movable screw 12 drives the inner cylinder 16 to rotate, the inner cylinder 16 drives the actuating wheel 18 to rotate, the actuating wheel 18 drives the wave groove 21 to rotate through the actuating teeth 22, the wave groove 21 drives the outer cylinder 17 to rotate, the outer cylinder 17 drives the anti-reverse screw 9 to rotate through the first gear 19 and the second gear 20, the anti-reverse screw 9 drives the anti-reverse screw 9 to rotate through the first gear 19 and the second gear 20. The anti-retraction threaded block 10 drives the anti-retraction plate 7 to move. The anti-retraction plate 7 moves relative to the movable plate 6. At this time, the position of the anti-retraction plate 7 is fixed relative to the base, so the movable plate 6 can be slowly pulled away from under the switch cabinet. During the pulling process, due to the obstruction of the anti-retraction plate 7, the switch cabinet is always kept above the base. After the movable plate 6 is pulled away from under the switch cabinet, the limit block 25 is driven to move by the drive shaft of the limit motor 24, so that the limit block 25 does not limit the toggle tooth 22. At this time, the toggle wheel 18 cannot drive the wave tooth groove 21 to rotate. Then, the return handle 14 is rotated, and the return handle 14 drives the anti-retraction screw 9 to rotate. The anti-retraction screw 9 drives the anti-retraction plate 7 to move through the anti-retraction threaded block 10 until the anti-retraction plate 7 moves to the initial position. For merging switchgear: After the switchgear is placed on the base, rotate the rotating plate 26 so that the two alignment plates 27 are placed on both sides of the base. At this time, the alignment screw 30 is rotated through the drive shaft of the alignment motor 32. The alignment screw 30 drives the two alignment threaded blocks 29 to rotate. The alignment threaded blocks 29 drive the alignment plates 27 to move until the two alignment plates 27 are fixed to both sides of the base. Then, the switchgear is clamped by the fixing clamp 40. At this time, the transition shaft 44 is rotated through the drive shaft of the power motor 57. The transition shaft 44 drives the push screw 41 to rotate through the transmission shaft 49. The push screw 41 drives the push threaded block 46 to move. The push threaded block 46 drives the push plate 33 to move. The push plate 33 can then push the switchgear to move through the fixing clamp 40 until it reaches the appropriate position, thus completing the merging of the switchgear. When merging the switchgear, multiple people are not required to complete the merging operation, which is time-saving, labor-saving, and saves manpower and resources. Moreover, the merging process does not require manual intervention, so the safety is high.

[0030] It should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This way of describing the specification is only for clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

[0031] The detailed descriptions listed above are merely specific descriptions of feasible implementation methods of this application, and are not intended to limit the scope of protection of this application. All equivalent implementation methods or modifications made without departing from the spirit of the art of this application should be included within the scope of protection of this invention.

Claims

1. A switchgear paralleling auxiliary device based on large-scale power grid security, characterized in that... :include, A trolley (1) is equipped with a push handle (4); A placement mechanism (2) is used to place the switch cabinet. The placement mechanism (2) includes a fixed plate (5) fixedly installed with the trolley (1). The fixed plate (5) is provided with a movable groove (11). A movable plate (6) is slidably installed in the movable groove (11). An anti-retraction plate (7) is slidably installed on the upper end of the movable plate (6). The fixed plate (5) is provided with a moving mechanism for the coordinated movement of the movable plate (6) and the anti-retraction plate (7). A pushing mechanism (3) is used to connect switch cabinets. The pushing mechanism (3) includes a rotating plate (26) rotatably mounted with the trolley (1). Two alignment plates (27) are installed at the lower end of the rotating plate (26). An alignment mechanism (28) for moving the two alignment plates (27) is provided on the rotating plate (26). A push plate (33) is installed on both alignment plates (27). A driving mechanism for driving the push plate (33) is provided on the rotating plate (26). A limit rod (35) is fixedly connected to one end of the push plate (33). The limit rod (35) slides through the rotating plate (26).

2. The switchgear paralleling auxiliary device based on large-scale power grid security according to claim 1, characterized in that... The moving mechanism includes a movable screw (12) rotatably mounted on the inner wall of the movable groove (11). One end of the movable screw (12) is threadedly connected to the movable plate (6). The movable plate (6) is provided with a sliding groove (8). An anti-retraction screw (9) is rotatably mounted in the sliding groove (8). An anti-retraction threaded block (10) is threaded on the external thread of the anti-retraction screw (9). The anti-retraction threaded block (10) is fixedly mounted with the anti-retraction plate (7). One end of the anti-retraction screw (9) rotatably passes through the movable plate (6) and is connected to the movable screw (12) through a gear set (13). The other end of the anti-retraction screw (9) rotatably passes through the movable plate (6) and is coaxially mounted with a return handle (14). A drive motor (15) is mounted on the outside of the fixed plate (5). The drive shaft of the drive motor (15) rotatably passes through the fixed plate (5) and is coaxially mounted with the movable screw (12).

3. The switchgear paralleling auxiliary device based on large-scale power grid security according to claim 2, characterized in that... The gear set (13) includes an inner cylinder (16) slidably sleeved on the movable screw (12), an outer cylinder (17) sleeved on the inner cylinder (16), both the inner cylinder (16) and the outer cylinder (17) being rotatably mounted to the outer wall of the movable plate (6), a first gear (19) being coaxially mounted on the outer cylinder (17), a second gear (20) being coaxially mounted on the outer side of the anti-reverse screw (9), the second gear (20) meshing with the first gear (19), and a turning wheel (18) being fixedly mounted on the outer side of the inner cylinder (16). A rotatable tooth (22) is rotatably mounted on the wheel (18), and multiple wave grooves (21) are arrayed on the inner wall of the outer cylinder (17). The rotatable tooth (22) matches the wave groove (21). The rotatable wheel (18) is provided with a groove (23). A limit block (25) is slidably mounted in the groove (23). A limit motor (24) is installed in the groove (23). The drive shaft of the limit motor (24) is threadedly connected to the limit block (25). The limit block (25) matches the rotatable tooth (22).

4. The switchgear paralleling auxiliary device based on large-scale power grid security according to claim 1, characterized in that... The alignment mechanism (28) includes an alignment groove (31) located at the lower end of the rotating plate (26). An alignment screw (30) is rotatably installed in the alignment groove (31). Two alignment threaded blocks (29) are threaded onto the external thread of the alignment screw (30). The two alignment threaded blocks (29) are fixedly connected to two alignment plates (27) respectively. An alignment motor (32) is installed on the outside of the rotating plate (26). The drive shaft of the alignment motor (32) rotates through the rotating plate (26) and is coaxially installed with the alignment screw (30).

5. A switchgear paralleling auxiliary device based on large-scale power grid security according to claim 1, characterized in that... The driving mechanism includes two push grooves (45) respectively disposed on the upper ends of two alignment plates (27). A push screw (41) is rotatably installed in the push groove (45). A push screw block (46) is threaded onto the external thread of the push screw (41). Both push screw blocks (46) are slidably installed with the push plate (33). The two push screw blocks (46) are slidably installed with the inner walls of the two push grooves (45). A vertical plate (47) is fixedly installed on the upper end of each of the two alignment plates (27). A drive shaft (49) rotatably passes through the vertical plate (47). The drive shaft (49) is connected to the push screw (41) through a second bevel gear set (56). A square plate is fixedly installed on one side of the rotating plate (26). (42) Both sides of the square plate (42) are provided with baffles (43). The baffles (43) are fixedly connected to the rotating plate (26). The square plate (42) is rotatably connected with a transition shaft (44). The two ends of the transition shaft (44) are rotatably installed with the two baffles (43) respectively. A power motor (57) is installed on the baffle (43). The drive shaft of the power motor (57) rotatably passes through the baffle (43) and is coaxially installed with the transition shaft (44). A sliding sleeve (50) is slidably sleeved on the outside of the transition shaft (44). The sliding sleeve (50) is rotatably installed with the vertical plate (47) through two limiting baffles (48). The sliding sleeve (50) is connected to the transmission shaft (49) through a first bevel gear set (51).

6. The switchgear paralleling auxiliary device based on large-scale power grid security according to claim 5, characterized in that... The second bevel gear set (56) includes a third bevel gear (54) and a fourth bevel gear (55) that mesh with each other. The third bevel gear (54) is coaxially mounted with the transmission shaft (49), and the fourth bevel gear (55) is coaxially mounted with the push screw (41).

7. A switchgear paralleling auxiliary device based on large-scale power grid security according to claim 5, characterized in that... The first bevel gear set (51) includes a first bevel gear (52) and a second bevel gear (53) that mesh with each other. The first bevel gear (52) is coaxially mounted with the sliding sleeve (50), and the second bevel gear (53) is coaxially mounted with the transmission shaft (49).

8. A switchgear paralleling auxiliary device based on large-scale power grid security according to claim 1, characterized in that... The push plate (33) is provided with two adjustment holes (36), and an adjustment screw (38) is rotatably inserted between the two adjustment holes (36). Two adjustment thread blocks (37) are threaded on the external thread of the adjustment screw (38). The two adjustment thread blocks (37) are slidably installed with the inner walls of the two adjustment holes (36). An adjustment motor (39) is installed on the outside of the push plate (33). The drive shaft of the adjustment motor (39) rotatably passes through the push plate (33) and is coaxially installed with the adjustment screw (38). Two fixing clips (40) are installed on each of the two adjustment thread blocks (37). A support rod (34) is installed on one end of the push plate (33). The support rod (34) is matched with the trolley (1).

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