Intelligent high-voltage switch cabinet

Abstract

This invention relates to the field of switchgear technology and provides an intelligent high-voltage switchgear, including a switchgear body and a vehicle-type circuit breaker; the vehicle-type circuit breaker includes a trolley chassis; a rotating rod is rotatably arranged between the vertical frame and the support base; a first bevel gear is fixed to the end of the rotating rod; a rotating shaft is rotatably arranged on the surface of the trolley chassis; a second bevel gear is fixed to the circumferential side of the rotating shaft and meshes with the first bevel gear; a main gear is fixed on the rotating shaft; an L-shaped seat is fixed to the side of the circuit breaker body and slides with the trolley chassis; a toothed plate is fixed to the bottom surface of the L-shaped seat and meshes with the main gear; this switchgear replaces the traditional screw drive method by meshing the main gear with the toothed plate and teeth. When the sprite contact and the stationary contact are connected, the main gear will mesh with the moving teeth. Continuing to rotate the rotating rod will only compress the return spring, and the toothed plate will no longer move, avoiding hard squeezing damage between the sprite contact and the stationary contact and ensuring good contact.

Description

Technical Field

[0001] This invention relates to the field of switchgear technology, and more specifically, to an intelligent high-voltage switchgear. Background Technology

[0002] High-voltage switchgear, as the core equipment in the power system used to receive, distribute and control high-voltage electrical energy, is widely used in power plants, substations, industrial and mining enterprises and other power distribution scenarios. Its operational stability, safety and ease of operation are directly related to the reliable operation of the entire power distribution system.

[0003] Currently, traditional intelligent high-voltage switchgear on the market mostly uses manual screw drive to connect and disconnect the internal vehicle-type circuit breaker from the stationary contact. The adjustment precision of the screw drive is difficult to control precisely, which can easily lead to the problem of hard compression when the sprite contact and the stationary contact are connected, causing contact wear, poor contact, affecting the stability of the electrical connection, and shortening the service life of the equipment. At the same time, traditional switchgear lacks an effective one-way anti-rotation limit structure. During normal operation, the circuit breaker is prone to displacement due to external vibration, misoperation, and other factors, causing the sprite contact to separate from the stationary contact and triggering a power supply failure. Summary of the Invention

[0004] In view of the shortcomings of the existing technology, the purpose of this invention is to provide an intelligent high-voltage switchgear. Through the coordinated operation of various components, intelligent mechanical limit and linkage protection can be achieved without complex electrical control. The equipment has high operational reliability and low maintenance cost. It solves many technical defects of traditional equipment from the mechanical structure level, and takes into account the operational stability, operational safety, ease of assembly and economical maintenance.

[0005] To achieve the above objectives, the present invention provides the following technical solution:

[0006] A smart high-voltage switchgear includes a switchgear body, a vehicle-mounted circuit breaker disposed inside the switchgear body, and an intelligent monitoring device for the mechanical characteristics of the circuit breaker. The vehicle-mounted circuit breaker includes: a trolley chassis, a vertical frame and a support base fixed to the surface of the trolley chassis; a rotating rod rotatably connected between the vertical frame and the support base; a first bevel gear fixed to the end of the rotating rod; a rotating shaft rotatably mounted on the surface of the trolley chassis; a second bevel gear meshing with the first bevel gear fixed to the circumferential side of the rotating shaft; a main gear fixed on the rotating shaft; and a circuit breaker body, with a sliding contact fixed to the side of the circuit breaker body that slides with the trolley chassis. The device includes an L-shaped base; a toothed plate that meshes with the main gear is fixed to the bottom surface of the L-shaped base; teeth that mesh with the main gear are symmetrically slidably arranged on the bottom surface of the toothed plate; stop blocks are symmetrically fixed on both opposite sides of the toothed plate; a return spring is connected between the teeth and a stop block; a matching one-way anti-rotation component is provided on the rotating rod and the vertical frame; a horizontal plate is fixed to the side of the circuit breaker body; a protective component matching the horizontal plate is snapped into the inside of the switch cabinet body; a sealing door is hinged to the side of the switch cabinet body; an unlocking component matching the rotating rod and the one-way anti-rotation component is inserted through the side of the sealing door.

[0007] The invention is further configured such that: the protective component includes a protective plate; a plurality of contact arms are evenly arranged on the side of the circuit breaker body; the end of each contact arm is provided with a staggered contact; a plurality of stationary contacts that mate with the corresponding staggered contacts are provided inside the switch cabinet body; the protective plate has a hollow internal structure, and its side is evenly provided with clearance holes for avoiding the corresponding staggered contacts; the protective plate has clearance grooves on its side that slide with the horizontal plate.

[0008] The invention is further configured such that: a plurality of rollers are symmetrically installed on both sides of the protective plate; sleeves are symmetrically fixed on both sides of the protective plate; a sliding plate is slidably arranged in the vertical direction inside the sleeve; a first support spring is connected between the sliding plate and the bottom of the sleeve; an L-shaped groove is opened on the outer wall of the sleeve; a post is rotatably arranged on the surface of the sliding plate; an ear rod adapted to the L-shaped groove is fixed on the periphery of the post; and a positioning hole is opened on the inner wall of the switch cabinet body to engage with the corresponding post.

[0009] The present invention is further configured such that: a storage cavity is provided on the bottom surface of the switch cabinet body for sliding cooperation with the handcart chassis; an insertion hole is provided on the bottom surface of the storage cavity; and a plug rod is threaded through the surface of the handcart chassis for insertion cooperation with the insertion hole.

[0010] The invention is further configured such that: a lifting groove is provided on the side of the protective plate; a lifting component is slidably disposed inside the protective plate; the lifting component includes a lifting plate that slides in cooperation with the inside of the protective plate; a second support spring is symmetrically fixed between the bottom surface of the lifting plate and the inner bottom surface of the protective plate; an extension plate that slides in cooperation with the lifting groove is fixed to the bottom surface of the lifting plate; an inclined plate is fixed to the surface of the extension plate; an L-shaped plate is connected between the inclined plate and the extension plate; and a guide post adapted to the inclined plate and the L-shaped plate is fixed to the end of the horizontal plate.

[0011] The present invention is further configured such that: a first clearance opening is provided on the surface of the L-shaped seat; a second clearance opening is provided on the L-shaped plate and the extension plate; a plurality of pulleys are symmetrically installed on the bottom surface of the L-shaped seat; guide rods are symmetrically fixed on the side of the vertical frame; and the two pulleys are slidably arranged on the corresponding guide rods.

[0012] The invention is further configured such that: the one-way anti-rotation component includes a ratchet fixed on the rotating rod and a pawl rotatably disposed on the side of the vertical frame; an arc-shaped tube is fixed on the side of the vertical frame; an arc-shaped rod that slides with the arc-shaped tube is fixed on the side of the pawl; and a first arc-shaped spring is connected between the arc-shaped rod and the arc-shaped tube.

[0013] The invention is further configured such that: a through hole is provided on the side of the sealing door; a sliding groove is provided on the inner wall of the through hole; the unlocking component includes a semi-outer tube with a hollow internal structure; a slide rail is fixed on the outer wall of the semi-outer tube and slides in cooperation with the sliding groove; a fixing ring is fixed inside the semi-outer tube; an inner tube is rotatably provided on the inner wall of the fixing ring; a hexagonal plug is fixed at one end of the inner tube and a ring handle is fixed at the other end; and a hexagonal groove is provided at the end of the rotating rod to engage with the hexagonal plug.

[0014] The invention is further configured such that: an arc-shaped groove is formed on the inner wall of the semi-outer tube; an arc-shaped plate is slidably arranged inside the semi-outer tube; an arc-shaped rail that slides with the arc-shaped groove is fixed on the outer wall of the arc-shaped plate; a second arc-shaped spring is connected between the arc-shaped plate and the inside of the semi-outer tube; an ear seat is fixed on the outer wall of the arc-shaped plate; an abutment rod is threaded through the surface of the ear seat; and an abutment hole is formed on the outer wall of the semi-outer tube that engages with the abutment rod.

[0015] The present invention is further configured such that: the intelligent monitoring device for the mechanical characteristics of the circuit breaker includes a data acquisition module, a signal processing module, a wireless communication module, and a display and early warning module; the data acquisition module includes a stroke sensor installed on the contact arm, a speed sensor installed at the root of the contact arm, a current and voltage sensor installed in the secondary control circuit and the inlet of the stationary contact, a contact pressure sensor embedded inside the plum blossom contact, and temperature sensor patches installed on the plum blossom contact, contact arm, and stationary contact; and a vibration sensor installed on the trolley chassis and the circuit breaker body housing; the signal processing module is used for data filtering, feature extraction, and state discrimination; the wireless communication module is used to upload the monitoring data to the background monitoring system; and the display and early warning module is used for local data display and abnormal audible and visual alarms.

[0016] The advantages of this invention are:

[0017] 1. This invention replaces the traditional screw drive method by meshing the main gear with the toothed plate and teeth. After the plum blossom contact and the stationary contact are connected, the main gear will mesh with the moving teeth. Continuing to rotate the rod will only compress the return spring, and the toothed plate will no longer move. Structurally, this avoids hard squeezing damage between the plum blossom contact and the stationary contact, ensures good contact, and effectively extends the service life of the contacts and the circuit breaker.

[0018] 2. This invention uses a one-way anti-rotation component consisting of a ratchet and a pawl, which ensures that the rotating rod can only rotate clockwise when the device is not unlocked, and the circuit breaker body can only move towards the stationary contact, preventing it from disengaging in the opposite direction. This effectively prevents the contact from disengaging due to vibration, misoperation, or other factors during normal operation of the equipment, ensuring the stability of the electrical connection and avoiding power supply failures.

[0019] 3. The protective plate of this invention achieves quick engagement and disassembly with the switch cabinet body through the cooperation of sleeve, sliding plate and plug, without the need for additional tools and is easy to operate; the handcart chassis achieves quick fixation by plugging the plug rod into the plug hole of the storage cavity, effectively preventing chassis shaking, and is convenient to disassemble and assemble, which greatly improves the operational efficiency of equipment assembly and maintenance and reduces labor costs.

[0020] 4. By adding an intelligent monitoring device for the mechanical characteristics of the circuit breaker, this invention can collect and intelligently analyze the circuit breaker's opening and closing stroke, movement speed, contact contact pressure, circuit electrical parameters, contact temperature rise, and mechanism vibration status in real time. It can provide early warning of potential faults such as contact wear, mechanism jamming, poor contact, and abnormal temperature rise, and supports local audible and visual alarms and remote data transmission. This enables the high-voltage switchgear to achieve "status perception - fault early warning - intelligent operation and maintenance", significantly improving the intelligence level of the equipment and the safety of power grid operation. Attached Figure Description

[0021] Figure 1This is a structural schematic diagram of an intelligent high-voltage switchgear according to the present invention.

[0022] Figure 2 For the present invention Figure 1 A structural diagram from the right-hand perspective.

[0023] Figure 3 For the present invention Figure 2 Enlarged view of region A.

[0024] Figure 4 This is a schematic diagram of the switch cabinet body of the present invention.

[0025] Figure 5 For the present invention Figure 4 A structural diagram from a frontal viewpoint.

[0026] Figure 6 This is a schematic diagram of the structure of the vehicle-type circuit breaker of the present invention in its deployed state.

[0027] Figure 7 For the present invention Figure 6 Enlarged view of region B.

[0028] Figure 8 This is a schematic diagram of the structure of the vehicle-type circuit breaker of the present invention in its stowed state.

[0029] Figure 9 This is a schematic diagram of the handcart chassis of the present invention.

[0030] Figure 10 For the present invention Figure 9 A structural diagram from a top-down perspective.

[0031] Figure 11 This is a schematic diagram of the circuit breaker body of the present invention.

[0032] Figure 12 For the present invention Figure 11 A structural diagram from another angle.

[0033] Figure 13 This is a schematic diagram of the protective component of the present invention with the clearance hole blocked.

[0034] Figure 14 This is a schematic diagram of the protective component of the present invention with the clearance hole in the open state.

[0035] Figure 15 This is a schematic diagram of the structure of the protective plate of the present invention.

[0036] Figure 16 This is a schematic diagram of the lifting component of the present invention.

[0037] Figure 17This is a schematic diagram of the unlocking component of the present invention.

[0038] Figure 18 This is a block diagram of the intelligent monitoring device for the mechanical characteristics of circuit breakers according to the present invention.

[0039] Figure 19 This is a block diagram of the data acquisition module of the present invention.

[0040] In the diagram: 1. Switchgear body; 2. Cart circuit breaker; 3. Cart chassis; 4. Vertical frame; 5. Support base; 6. Rotating rod; 7. First bevel gear; 8. Rotating shaft; 9. Second bevel gear; 10. Main gear; 11. Circuit breaker body; 12. L-shaped base; 13. Gear plate; 14. Gear teeth; 15. Stop block; 16. Return spring; 17. Horizontal plate; 18. Protective component; 19. Sealing door; 20. Unlocking component; 21. Protective plate; 22. Contact arm; 23. Plum blossom contact; 24. Stationary contact; 25. Clearance hole; 26. Clearance groove; 27. Roller; 28. Sleeve; 29. ​​Slide plate; 30. First support spring; 31. L-shaped groove; 32. Insert post; 33. Ear 34. Positioning hole; 35. Storage cavity; 36. Insertion hole; 37. Insertion rod; 38. Lifting groove; 39. Lifting component; 40. Lifting plate; 41. Second support spring; 42. Extension plate; 43. Inclined plate; 44. L-shaped plate; 45. Guide post; 46. First clearance opening; 47. Second clearance opening; 48. Pulley; 49. Guide rod; 50. Ratchet; 51. Pawl; 52. Arc-shaped tube; 53. Arc-shaped rod; 54. Through hole; 55. Slide groove; 56. Semi-outer tube; 57. Fixing ring; 58. Inner tube; 59. Hexagonal plug; 60. Ring handle; 61. Hexagonal groove; 62. Arc-shaped plate; 63. Arc-shaped rail; 64. Ear seat; 65. Abutment rod. Detailed Implementation

[0041] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0042] It should be noted that, unless otherwise specified, all technical and scientific terms used in this application have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains.

[0043] In this invention, unless otherwise stated, the directional terms such as "up" and "down" generally refer to the directions shown in the accompanying drawings, or to the vertical, perpendicular, or gravitational direction; similarly, for ease of understanding and description, "left" and "right" generally refer to the left and right shown in the accompanying drawings; "inner" and "outer" refer to the inner and outer contours of each component itself, but the above directional terms are not intended to limit this invention.

[0044] Example 1, please refer to Figure 1-19 The present invention provides the following technical solutions:

[0045] A smart high-voltage switchgear specifically includes a switchgear body 1, a vehicle-type circuit breaker 2 installed inside the switchgear body 1, and an intelligent monitoring device for the mechanical characteristics of the circuit breaker. The vehicle-type circuit breaker 2 includes: a trolley chassis 3, with a vertical frame 4 and a support base 5 fixed to the surface of the trolley chassis 3; a rotating rod 6 rotatably connected between the vertical frame 4 and the support base 5; a first bevel gear 7 fixed to the end of the rotating rod 6; a rotating shaft 8 rotatably connected to the surface of the trolley chassis 3; a second bevel gear 9 meshing with the first bevel gear 7 fixed to the circumferential side of the rotating shaft 8; a main gear 10 fixed on the rotating shaft 8; and a circuit breaker body 11, with an L-shaped seat 1 slidably engaged with the trolley chassis 3 fixed to the side of the circuit breaker body 11. 2; A toothed plate 13 is fixed on the bottom surface of the L-shaped base 12 to mesh with the main gear 10; Teeth 14 that mesh with the main gear 10 are symmetrically slidably arranged on the bottom surface of the toothed plate 13; Stoppers 15 are symmetrically fixed on both sides of the toothed plate 13; A return spring 16 is connected between the teeth 14 and a stopper 15; One-way anti-rotation components are provided on the rotating rod 6 and the vertical frame 4; A horizontal plate 17 is fixed on the side of the circuit breaker body 11; A protective component 18 that matches the horizontal plate 17 is snapped into the inside of the switch cabinet body 1; A sealing door 19 is hinged on the side of the switch cabinet body 1; An unlocking component 20 that matches the rotating rod 6 and the one-way anti-rotation component is inserted through the side of the sealing door 19.

[0046] Working principle of this embodiment:

[0047] By snapping the protective component 18 into the switch cabinet body 1, the vehicle-mounted circuit breaker 2 is pushed into the switch cabinet body 1. The protective component 18 physically isolates the vehicle-mounted circuit breaker 2 from the stationary contact 24 inside the switch cabinet body 1, thereby structurally avoiding the risk of electric shock during operation and improving the safety performance of equipment operation.

[0048] By setting a one-way anti-rotation component, the rotating rod 6 can only rotate clockwise and not counterclockwise when it is not unlocked. This ensures that the circuit breaker body 11 can only move towards the protective component 18 and not away from it, thus preventing the plum blossom contact 23 from separating from the stationary contact 24 during normal use of the intelligent high-voltage switchgear and ensuring the stability of the electrical connection.

[0049] When the sealing door 19 is closed, the unlocking component 20 is rotated clockwise, causing the rotating rod 6 to rotate clockwise. This causes the first bevel gear 7 to rotate clockwise synchronously, which in turn causes the second bevel gear 9 to rotate clockwise synchronously. This causes the rotating shaft 8 and the main gear 10 to rotate clockwise synchronously, which in turn causes the toothed plate 13, which meshes with the main gear 10, to move towards the protective component 18. When the sprite contact 23 aligns with the corresponding stationary contact 24, the main gear 10 meshes with the corresponding tooth 14. Continuing to rotate the unlocking component 20 clockwise causes the main gear 10 to rotate, causing the tooth 14 to move towards the stationary contact 24. The corresponding return spring 16 is compressed. In this state, even if the rotating rod 6 continues to rotate, the toothed plate 13 will not move towards the stationary contact 24. This replaces the traditional method of moving the circuit breaker body 11 by rotating the screw, preventing the sprite contact 23 from continuing to move towards the corresponding stationary contact 24. From a mechanical structure perspective, this completely avoids the hard compression between the sprite contact 23 and the stationary contact 24, preventing problems such as contact wear and poor contact.

[0050] Example 2, please refer to Figure 1-19 This second embodiment is an improvement on the first embodiment as follows: Specifically, the protective component 18 includes a protective plate 21; a plurality of contact arms 22 are evenly arranged on the side of the circuit breaker body 11; the end of the contact arm 22 is provided with a plum blossom contact 23; a plurality of stationary contacts 24 are provided inside the switch cabinet body 1 to connect with the corresponding plum blossom contacts 23; the protective plate 21 has a hollow structure inside, and its side is evenly provided with clearance holes 25 for avoiding the corresponding plum blossom contacts 23; the side of the protective plate 21 is provided with clearance grooves 26 that slide with the horizontal plate 17.

[0051] The protective plate 21 is symmetrically equipped with several rollers 27 on both sides; the protective plate 21 is symmetrically fixed with sleeves 28 on both sides; the sleeve 28 is vertically slidably mounted with a sliding plate 29 inside; a first support spring 30 is connected between the sliding plate 29 and the bottom of the sleeve 28; an L-shaped groove 31 is opened on the outer wall of the sleeve 28; a plug 32 is rotatably mounted on the surface of the sliding plate 29; an ear rod 33 that matches the L-shaped groove 31 is fixed on the periphery of the plug 32; the inner wall of the switch cabinet body 1 is provided with a positioning hole 34 that is inserted and matched with the corresponding plug 32.

[0052] By sliding the protective plate 21 into the designated position inside the switch cabinet body 1, under the elastic action of the first support spring 30, the sliding plate 29, along with the insertion post 32 on its surface, is driven into the corresponding positioning hole 34 on the switch cabinet body 1, thus completing the rapid installation of the protective plate 21 and the switch cabinet body 1. When it is necessary to remove the protective plate 21 from the switch cabinet body 1, simply press the corresponding lug 33, the first support spring 30 is compressed, and the lug 33 drives the insertion post 32, along with the sliding plate 29, to slide synchronously along the sleeve 28, causing the insertion post 32 to disengage from the corresponding positioning hole 34. Rotate the lug 33 to rotate it into the straight section of the L-shaped groove 31. Under the elastic action of the first support spring 30, the lug 33 abuts against the straight section of the L-shaped groove 31, and the protective plate 21 can be directly removed from the switch cabinet body 1. The operation is simple and easy to use, improving the assembly efficiency of the protective plate 21.

[0053] The bottom surface of the switch cabinet body 1 is provided with a storage cavity 35 that slides with the handcart chassis 3; the bottom surface of the storage cavity 35 is provided with a socket 36; a plug rod 37 is threaded through the surface of the handcart chassis 3 and is engaged with the socket 36.

[0054] After the protective plate 21 is installed, the vehicle-type circuit breaker 2 is pushed into the switch cabinet body 1. When the plug rod 37 and the socket 36 are coaxially set, the plug rod 37 is rotated to make it rotate and descend into the socket 36, thus completing the fixed installation of the truck chassis 3 and the bottom surface of the switch cabinet body 1, preventing the truck chassis 3 and the switch cabinet body 1 from shaking, and improving the stability of the truck chassis 3.

[0055] The protective plate 21 has a lifting groove 38 on its side; a lifting component 39 is slidably arranged inside the protective plate 21; the lifting component 39 includes a lifting plate 40 that slides with the inside of the protective plate 21; a second support spring 41 is symmetrically fixed between the bottom surface of the lifting plate 40 and the inner bottom surface of the protective plate 21; an extension plate 42 that slides with the lifting groove 38 is fixed to the bottom surface of the lifting plate 40; an inclined plate 43 is fixed to the surface of the extension plate 42; an L-shaped plate 44 is connected between the inclined plate 43 and the extension plate 42; and a guide post 45 that is adapted to the inclined plate 43 and the L-shaped plate 44 is fixed to the end of the horizontal plate 17.

[0056] The surface of the L-shaped base 12 is provided with a first clearance opening 46; the L-shaped plate 44 and the extension plate 42 are provided with interconnected second clearance openings 47; a number of pulleys 48 are symmetrically installed on the bottom surface of the L-shaped base 12; guide rods 49 are symmetrically fixed on the sides of the vertical frame 4; the two pulleys 48 are slidably arranged on the corresponding guide rods 49.

[0057] By setting the first clearance opening 46 and the second clearance opening 47, the extension plate 42 and the inclined plate 43 on the lifting member 39 will not be blocked by the L-shaped seat 12 and the toothed plate 13 during the descent process. That is, the extension plate 42 and the inclined plate 43 slide between the inner walls of the first clearance opening 46, while the toothed plate 13 slides between the inner walls of the second clearance opening 47.

[0058] The one-way anti-rotation component includes a ratchet 50 fixed on the rotating rod 6 and a pawl 51 rotatably disposed on the side of the vertical frame 4; an arc-shaped tube 52 is fixed on the side of the vertical frame 4; an arc-shaped rod 53 that slides with the arc-shaped tube 52 is fixed on the side of the pawl 51; and a first arc-shaped spring is connected between the arc-shaped rod 53 and the arc-shaped tube 52.

[0059] When the ratchet 50 rotates clockwise synchronously with the lever 6, the pawl 51 is pushed by the corresponding ratchet tooth on the ratchet 50 and rotates counterclockwise. The first arc spring is compressed. When the pawl 51 disengages from the ratchet tooth, under the elastic reset action of the first arc spring, the pawl 51 rotates clockwise synchronously with the arc lever 53 to reset and engage with the next set of ratchet teeth. The ratchet tooth engaged with the pawl 51 is limited by the pawl 51. Therefore, in the unlocked state, the ratchet 50 and the lever 6 cannot rotate counterclockwise, realizing the one-way anti-rotation of the lever 6.

[0060] The sealing door 19 has a through hole 54 on its side; the inner wall of the through hole 54 has a groove 55; the unlocking component 20 includes a semi-outer tube 56 with a hollow internal structure; a slide rail that slides with the groove 55 is fixed to the outer wall of the semi-outer tube 56; a fixing ring 57 is fixed inside the semi-outer tube 56; an inner tube 58 is rotatably arranged on the inner wall of the fixing ring 57; a hexagonal plug 59 is fixed to one end of the inner tube 58, and a ring handle 60 is fixed to the other end; a hexagonal groove 61 that is inserted into the rotating rod 6 is provided at the end of the rod.

[0061] An arc-shaped groove is formed on the inner wall of the semi-outer tube 56; an arc-shaped plate 62 is slidably arranged inside the semi-outer tube 56; an arc-shaped rail 63 that slides with the arc-shaped groove is fixed on the outer wall of the arc-shaped plate 62; a second arc-shaped spring is connected between the arc-shaped plate 62 and the inside of the semi-outer tube 56; an ear seat 64 is fixed on the outer wall of the arc-shaped plate 62; an abutment rod 65 is threaded through the surface of the ear seat 64; an abutment hole that is inserted into the outer wall of the semi-outer tube 56 to engage with the abutment rod 65.

[0062] The intelligent monitoring device for the mechanical characteristics of the circuit breaker includes a data acquisition module, a signal processing module, a wireless communication module, and a display and early warning module. The data acquisition module includes a travel sensor installed on the contact arm 22 (parallel to the linear motion direction of the circuit breaker, real-time acquisition of the contact stroke and overtravel of the sprite contact 23), a speed sensor installed at the root of the contact arm 22 (synchronously acquisition of opening and closing speed and motion smoothness), a current and voltage sensor installed in the secondary control circuit and at the input end of the stationary contact 24 (acquiring the opening and closing coil current, circuit voltage, and contact resistance), and a contact pressure sensor embedded inside the sprite contact 23. The system includes sensors (for real-time monitoring of contact contact pressure) and temperature sensor patches installed on the plum blossom contact 23, contact arm 22, and stationary contact 24 (for collecting contact temperature rise and hot spot temperature); vibration sensors installed on the trolley chassis 3 and the circuit breaker body 11 housing (for monitoring mechanism vibration, jamming, and impact); a signal processing module for data filtering, feature extraction, and status judgment, automatically identifying abnormal data; a wireless communication module for uploading monitoring data to the background monitoring system for remote viewing and operation and maintenance management; and a display and early warning module for local data display and abnormal audible and visual alarms to remind maintenance personnel to handle issues promptly.

[0063] It enables online acquisition and intelligent analysis of key parameters such as opening and closing time, stroke, speed, contact pressure, temperature rise, and contact resistance. It can provide early warning of potential faults such as contact wear, jamming, poor contact, and mechanical fatigue. It supports remote data transmission and back-end operation and maintenance, truly realizing "status perception - fault early warning - intelligent operation and maintenance" for high-voltage switchgear, significantly improving the intelligence level of equipment and the safety of power grid operation.

[0064] Working principle of this embodiment two:

[0065] After closing the sealing door 19, insert the slide rail on the outer tube 56 into the slide groove 55 on the inner wall of the through hole 54, align the hexagonal plug 59 and insert it into the hexagonal slot 61, and turn the ring handle 60 clockwise to drive the inner tube 58 to rotate clockwise, thereby driving the hexagonal plug 59 and the rotating rod 6 to rotate clockwise synchronously. Through the cooperation between the various components, the toothed plate 13 is driven to move towards the protective member 18; the guide post 45 at the end of the horizontal plate 17 moves towards the protective plate 21. During this process, the guide post 45 squeezes... The inclined plate 43 slides down, and the corresponding second support spring 41 is compressed. During this process, the lifting plate 40 slides down along the inner wall of the protective plate 21, so that each set of clearance holes 25 is opened. When the guide column 45 moves to the straight section of the L-shaped plate 44, the lifting plate 40 remains stationary, and the horizontal plate 17 slides into the clearance groove 26. Each set of plum blossom contacts 23 passes through the corresponding clearance holes 25 on the protective plate 21. After each set of plum blossom contacts 23 and stationary contacts 24 are connected, the main gear 10 meshes with the corresponding teeth 14.

[0066] When it is necessary to remove the vehicle-type circuit breaker 2 from the switchgear body 1, the unlocking piece 20 is passed through the through hole 54 and inserted into the hexagonal slot 61. The abutment rod 65 is rotated to disengage it from the abutment hole on the outer wall of the semi-outer tube 56, releasing the fixed limit on the arc plate 62 and the semi-outer tube 56. Under the elastic reset action of the second arc spring, the arc plate 62 is driven to slide out of the semi-outer tube 56. After sliding out of the semi-outer tube 56, the arc plate 62 moves towards the pawl 51, squeezing the pawl 51 to rotate counterclockwise around the hinge point. The first arc spring is compressed, releasing the pawl 51 from limiting the ratchet 50. Once unlocking is complete, rotating the lever 6 counterclockwise causes the main gear 10 to rotate counterclockwise, which in turn causes the toothed plate 13 to move away from the protective plate 21, disengaging the plum blossom contact 23 from the corresponding stationary contact 24. When the main gear 10 meshes with the corresponding tooth 14, the main gear 10 continues to rotate counterclockwise, and the tooth 14 moves away from the protective plate 21, compressing the corresponding reset spring 16. Even if the main gear 10 continues to rotate counterclockwise, the toothed plate 13 will not move accordingly, preventing the circuit breaker body 11 from being forcibly pressed against the vertical frame 4, which could cause equipment damage.

[0067] When the circuit breaker body 11 moves in the reverse direction, the guide post 45 slides out from the straight section of the L-shaped plate 44 and no longer presses against the inclined plate 43. Under the elastic action of the second support spring 41, the lifting plate 40 slides upward to reset and covers the avoidance hole 25 of the protective plate 21 again, restoring physical isolation protection and ensuring the safety of subsequent operations.

[0068] Obviously, the embodiments described above are merely some, not all, embodiments of the present invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort should fall within the scope of protection of the present invention.

[0069] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0070] It should be noted that the terms "first," "second," etc., used in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of this application described herein can be implemented in sequences other than those illustrated or described herein.

[0071] The above description is merely a preferred embodiment of the present invention and is not intended to limit the invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

[0072] The above description is merely a preferred embodiment of the present invention. The scope of protection of the present invention is not limited to the above embodiments. All technical solutions falling within the scope of the present invention's concept are within the scope of protection of the present invention. It should be noted that for those skilled in the art, any improvements and modifications made without departing from the principles of the present invention should also be considered within the scope of protection of the present invention.

Claims

1. An intelligent high-voltage switchgear, comprising a switchgear body (1), a vehicle-type circuit breaker (2) disposed inside the switchgear body (1), and an intelligent monitoring device for the mechanical characteristics of the circuit breaker; characterized in that: The vehicle-mounted circuit breaker (2) includes: A handcart chassis (3) has a vertical frame (4) and a support seat (5) fixed on its surface; a rotating rod (6) is rotatably connected between the vertical frame (4) and the support seat (5); a first bevel gear (7) is fixed at the end of the rotating rod (6); a rotating shaft (8) is rotatably connected on the surface of the handcart chassis (3); a second bevel gear (9) that meshes with the first bevel gear (7) is fixed on the circumferential side of the rotating shaft (8); and a main gear (10) is fixed on the rotating shaft (8). The circuit breaker body (11) has an L-shaped seat (12) fixed on its side, which slides with the handcart chassis (3); the bottom surface of the L-shaped seat (12) has a toothed plate (13) that meshes with the main gear (10); the bottom surface of the toothed plate (13) has teeth (14) that mesh with the main gear (10) symmetrically slidably arranged; the toothed plate (13) has stops (15) symmetrically fixed on both sides; and a return spring (16) is connected between the teeth (14) and a stop (15). The rotating rod (6) and the vertical frame (4) are provided with matching one-way anti-rotation parts; the circuit breaker body (11) is fixed with a horizontal plate (17) on the side; the switch cabinet body (1) is fitted with a protective part (18) that matches the horizontal plate (17) inside; the switch cabinet body (1) is hinged with a sealing door (19) on the side; the sealing door (19) is fitted with an unlocking part (20) that matches the rotating rod (6) and the one-way anti-rotation parts through the side.

2. The intelligent high-voltage switchgear according to claim 1, characterized in that: The protective component (18) includes a protective plate (21); a number of contact arms (22) are evenly arranged on the side of the circuit breaker body (11); the end of the contact arm (22) is provided with a plum blossom contact (23); a number of stationary contacts (24) that are connected to the corresponding plum blossom contact (23) are provided inside the switch cabinet body (1); the protective plate (21) is hollow inside, and its side is evenly provided with clearance holes (25) for avoiding the corresponding plum blossom contact (23); the side of the protective plate (21) is provided with clearance grooves (26) that slide with the horizontal plate (17).

3. The intelligent high-voltage switchgear according to claim 2, characterized in that: The protective plate (21) is symmetrically equipped with several rollers (27) on both sides; the protective plate (21) is symmetrically fixed with sleeves (28) on both sides; a sliding plate (29) is slidably arranged in the vertical direction inside the sleeve (28); a first support spring (30) is connected between the sliding plate (29) and the bottom of the sleeve (28); an L-shaped groove (31) is opened on the outer wall of the sleeve (28); a plug (32) is rotatably arranged on the surface of the sliding plate (29); an ear rod (33) that matches the L-shaped groove (31) is fixed on the periphery of the plug (32); a positioning hole (34) that is inserted and matched with the corresponding plug (32) is opened on the inner wall of the switch cabinet body (1).

4. The intelligent high-voltage switchgear according to claim 3, characterized in that: The bottom surface of the switch cabinet body (1) is provided with a storage cavity (35) that slides with the handcart chassis (3); the bottom surface of the storage cavity (35) is provided with a socket (36); a plug rod (37) that is screwed through the surface of the handcart chassis (3) and engages with the socket (36).

5. The intelligent high-voltage switchgear according to claim 4, characterized in that: The protective plate (21) has a lifting groove (38) on its side; a lifting component (39) is slidably arranged inside the protective plate (21); the lifting component (39) includes a lifting plate (40) that slides with the inside of the protective plate (21); a second support spring (41) is symmetrically fixed between the bottom surface of the lifting plate (40) and the inner bottom surface of the protective plate (21); an extension plate (42) that slides with the lifting groove (38) is fixed on the bottom surface of the lifting plate (40); an inclined plate (43) is fixed on the surface of the extension plate (42); an L-shaped plate (44) is connected between the inclined plate (43) and the extension plate (42); and a guide post (45) that is adapted to the inclined plate (43) and the L-shaped plate (44) is fixed at the end of the horizontal plate (17).

6. The intelligent high-voltage switchgear according to claim 5, characterized in that: The L-shaped seat (12) has a first clearance opening (46) on its surface; the L-shaped plate (44) and the extension plate (42) have a second clearance opening (47) that are interconnected; the bottom surface of the L-shaped seat (12) is symmetrically equipped with several pulleys (48); the side of the vertical frame (4) is symmetrically fixed with guide rods (49); the two pulleys (48) are slidably arranged on the corresponding guide rods (49).

7. The intelligent high-voltage switchgear according to claim 6, characterized in that: The one-way anti-rotation component includes a ratchet (50) fixed on the rotating rod (6) and a pawl (51) rotatably disposed on the side of the vertical frame (4); an arc-shaped tube (52) is fixed on the side of the vertical frame (4); an arc-shaped rod (53) that slides with the arc-shaped tube (52) is fixed on the side of the pawl (51); a first arc-shaped spring is connected between the arc-shaped rod (53) and the arc-shaped tube (52).

8. The intelligent high-voltage switchgear according to claim 7, characterized in that: The sealing door (19) has a through hole (54) on its side; the through hole (54) has a groove (55) on its inner wall; the unlocking component (20) includes a semi-outer tube (56) with a hollow internal structure; a slide rail that slides with the groove (55) is fixed to the outer wall of the semi-outer tube (56); a fixing ring (57) is fixed inside the semi-outer tube (56); an inner tube (58) is rotatably arranged on the inner wall of the fixing ring (57); a hexagonal plug (59) is fixed to one end of the inner tube (58), and a ring handle (60) is fixed to the other end; a hexagonal groove (61) is opened at the end of the rotating rod (6) to engage with the hexagonal plug (59).

9. The intelligent high-voltage switchgear according to claim 8, characterized in that: The inner wall of the semi-outer tube (56) is provided with an arc-shaped groove; an arc-shaped plate (62) is slidably arranged inside the semi-outer tube (56); an arc-shaped rail (63) that slides with the arc-shaped groove is fixed on the outer wall of the arc-shaped plate (62); a second arc-shaped spring is connected between the arc-shaped plate (62) and the inside of the semi-outer tube (56); an ear seat (64) is fixed on the outer wall of the arc-shaped plate (62); an abutment rod (65) is threaded through the surface of the ear seat (64); an abutment hole that is inserted and engaged with the abutment rod (65) is provided on the outer wall of the semi-outer tube (56).

10. The intelligent high-voltage switchgear according to claim 9, characterized in that: The intelligent monitoring device for the mechanical characteristics of the circuit breaker includes a data acquisition module, a signal processing module, a wireless communication module, and a display and early warning module. The data acquisition module includes a stroke sensor installed on the contact arm (22), a speed sensor installed at the root of the contact arm (22), a current and voltage sensor installed at the secondary control circuit and the inlet of the stationary contact (24), a contact pressure sensor embedded in the plum blossom contact (23), and temperature sensor patches installed on the plum blossom contact (23), the contact arm (22), and the stationary contact (24); and a vibration sensor installed on the handcart chassis (3) and the circuit breaker body (11) housing. The signal processing module is used for data filtering, feature extraction, and state determination; the wireless communication module is used to upload monitoring data to the background monitoring system; and the display and early warning module is used for local data display and abnormal sound and light alarms.

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