Automatic circuit breaker handcart for switch cabinet

Abstract

The invention discloses an automatic circuit breaker handcart for a switch cabinet, and belongs to the technical field of circuit breakers, the automatic circuit breaker handcart for the switch cabinet comprises a bottom frame, the bottom frame is movably provided with a circuit breaker handcart, the circuit breaker handcart is provided with a plurality of arc extinguish chambers, and the arc extinguish chambers are provided with moving contacts. A front frame is installed at one end, far away from the circuit breaker handcart, of the bottom frame, an aviation socket located on one side, far away from the circuit breaker handcart, of the front frame is arranged on the bottom frame, a signal lead is installed on the aviation socket, and a pushing assembly connected with the circuit breaker handcart is arranged between the circuit breaker handcart and the front frame. A movable transmission assembly movably connected with the pushing assembly is arranged in the bottom frame, moving assemblies movably connected with the movable transmission assembly are arranged on the two sides of the bottom frame, a camera and a temperature sensor are installed on the top of one side of the front frame, and a third contact sensor is installed on the bottom frame. The device has the advantages of intelligent detection, ordered movement, full contact of moving and static contacts, safety, reliability, convenient operation, simplicity, convenience and practicability.

Description

Technical Field

[0001] The present invention relates to the technical field of circuit breakers, in particular to an automatic circuit breaker trolley for a switch cabinet. Background Art

[0002] Automatic circuit breaker trolleys are core components of high-voltage switchgear, used to install, move, and operate circuit breakers. Their operating principle is based on the coordination of mechanical structure and electrical control. Achieving automation of circuit breaker trolleys is a key means of improving power system automation, enhancing operation and maintenance efficiency, and enhancing safety.

[0003] When using the existing switch cabinet automatic circuit breaker trolley, the staff usually uses a crank to drive the trolley propulsion mechanism to achieve the connection between the moving and static contacts. However, this connection method cannot ensure the contact effect between the moving and static contacts, and cannot ensure sufficient contact between the moving and static contacts, resulting in local heating inside the switch cabinet, causing certain safety hazards.

[0004] Therefore, it is necessary to provide an automatic circuit breaker trolley for a switch cabinet to solve the above problems. Summary of the Invention

[0005] In view of the deficiencies in the prior art, an object of the embodiments of the present invention is to provide an automatic circuit breaker trolley for a switch cabinet to solve the problems in the above-mentioned background technology.

[0006] To achieve the above object, the present invention provides the following technical solutions:

[0007] An automatic circuit breaker trolley for a switch cabinet comprises a base frame, on which a circuit breaker trolley is movably mounted, a plurality of arc extinguishing chambers being equidistantly mounted on the circuit breaker trolley, movable contacts being mounted on the arc extinguishing chambers, a front frame being mounted on an end of the base frame away from the circuit breaker trolley, an aviation socket being mounted on the base frame and located on a side of the front frame away from the circuit breaker trolley, a signal lead being mounted on the aviation socket, a push assembly connected to the circuit breaker trolley being disposed between the circuit breaker trolley and the front frame, a movable transmission assembly movably connected to the push assembly being disposed within the base frame, movable assemblies movably connected to the movable transmission assembly being disposed on both sides of the base frame, a camera and a temperature sensor being mounted on a top portion of a side of the front frame close to the circuit breaker trolley, and a third contact sensor being mounted on an end of the base frame close to the movable contact.

[0008] As a further solution of the present invention, the pushing assembly includes several through slots arranged at the end of the signal lead bottom frame away from the front frame, and a support slide connected to the circuit breaker trolley is slidably provided at the through slot, and a side panel is symmetrically installed on the side of the circuit breaker trolley close to the front frame, and a guide slide is provided on the side panel. A slide rod is movably provided between the circuit breaker trolley and the front frame, and the ends of the slide rod slide with the corresponding guide slide grooves respectively. A vertical pole located between the circuit breaker trolley and the front frame is installed on the bottom frame, and a top plate is connected to the end of the vertical pole away from the bottom frame. A screw is rotatably connected between the top plate and the bottom frame, and the screw is movably connected to the movable transmission assembly. A lifting frame threadedly connected to the screw is slidably provided on the vertical pole, and a connecting seat connected to the slide rod is provided on the lifting frame.

[0009] As a further solution of the present invention, the moving assembly includes four moving wheels symmetrically distributed on the outside of the bottom frame, and a rotating rod passing through the bottom frame is connected between the corresponding moving wheels. The rotating rod rotates in coordination with the inner wall of the bottom frame. Both rotating rods are provided with pulleys, and a transmission belt is connected between the two pulleys.

[0010] As a further solution of the present invention, the movable transmission assembly includes a mounting plate symmetrically mounted on the top inner side of the bottom frame, a rotating shaft is provided for rotation between the mounting plates, the end of the rotating shaft is connected to a driving motor, a cross bar is connected between the two mounting plates, a movable frame is provided for sliding on the outside of the cross bar, one end of the movable frame is connected to a limiting bevel gear ring movably sleeved on the outside of the rotating shaft, the other end of the movable frame is connected to a collar, a rotating bevel gear ring sleeved on the outside of the rotating shaft is provided for rotation inside the collar, a plurality of first clips are distributed circumferentially on the rotating shaft, a clip groove which slides with the first clip is provided inside the rotating bevel gear ring, and a clip groove which slides with the screw extending into the bottom frame is provided for rotation inside the bottom frame A transmission bevel gear is connected to one end of the bottom frame, and the transmission bevel gear is alternately meshed with the rotating bevel gear ring and the limiting bevel gear ring. A rotating gear that is movably meshed with the transmission gear ring is installed on the rotating rod. Several second clips are distributed circumferentially on the rotating rod, and a clip that is movably engaged with the second clip is provided on the outer side of the rotating rod. The clip is connected to the moving frame, and an electric cylinder connected to the moving frame is installed on the mounting plate. A third contact sensor is provided on the side of the bottom frame close to the inside of the switch cabinet, a first contact sensor that is movably in contact with the top of the lifting frame is provided on the top of the bottom frame, and a second contact sensor that is movably in contact with the bottom of the lifting frame is provided on the top of the bottom frame.

[0011] As a further solution of the present invention, the guide groove includes a straight groove one, an inclined groove and a straight groove two, the two ends of the inclined groove are respectively connected to the bottom end of the straight groove one and the top end of the straight groove two, the height of the straight groove one is greater than the height of the straight groove two and the straight groove one is located on the side of the straight groove two away from the circuit breaker trolley.

[0012] As a further solution of the present invention, the lifting frame is configured as a square frame.

[0013] As a further solution of the present invention, the distance between the limiting bevel gear ring and the transmission bevel gear is consistent with the distance between the transmission gear ring and the rotating gear.

[0014] As a further solution of the present invention, the distance between the transmission gear ring and the rotating gear is consistent with the clamping length between the second clamping strip and the clamping ring.

[0015] In summary, the embodiments of the present invention have the following beneficial effects compared with the prior art:

[0016] 1. In the present invention, the movable transmission assembly drives the bottom frame to move toward the inside of the switch cabinet by being connected with the moving assembly. The third contact sensor will send a signal after contacting the inner wall of the switch cabinet. The control module will control the corresponding components in the movable transmission assembly to work, release the transmission between the movable transmission assembly and the movable assembly, and fix the position of the movable assembly. At the same time, the connection between the movable transmission assembly and the pushing assembly is realized. The control module controls the movable transmission assembly to work in the forward direction. The movable transmission assembly pushes the circuit breaker trolley away from the front frame by being connected with the pushing assembly, so that the moving contact on the arc extinguishing chamber is in full and complete contact with the static contact in the switch cabinet, and the contact pressure is balanced, thereby avoiding the safety hazard caused by the lack of full contact between the moving contact and the static contact, resulting in local heating. At the same time, the automatic and orderly operation of the movable assembly and the pushing assembly is realized, thereby improving the reliability of the device operation.

[0017] 2. In the present invention, when the temperature sensor detects that the temperature inside the switch cabinet exceeds a preset range, the temperature sensor sends abnormal data to the control module, and the control module controls the movable transmission assembly to work in the reverse direction. The movable transmission assembly drives the circuit breaker trolley close to the front frame by connecting with the push assembly, so that the distance between the circuit breaker trolley and the front frame is at a minimum value, thereby releasing the connection between the moving contact and the static contact;

[0018] 3. In the present invention, when the device needs to be withdrawn, the control module releases the connection between the movable transmission assembly and the push assembly by controlling the corresponding components in the movable transmission assembly to work, and connects the movable transmission assembly to the moving assembly. The movable transmission assembly then reverses and drives the bottom frame to move toward the outside of the switch cabinet by driving the moving assembly to work, thereby withdrawing the device and facilitating subsequent maintenance of the device.

[0019] 4. In the present invention, by fixing the horizontal distance between straight slot 1 and straight slot 2, it is possible to ensure that the contact distance between the moving contact and the static contact is sufficient, thereby ensuring full and complete contact between the moving contact and the static contact, and avoiding the safety hazard caused by local heating due to insufficient contact between the moving contact and the static contact.

[0020] In order to more clearly illustrate the structural features and effects of the present invention, the present invention is described in detail below with reference to the accompanying drawings and specific embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a three-dimensional view of an automatic circuit breaker trolley for a switch cabinet in an embodiment of the invention.

[0022] Figure 2 It is a rear view of the automatic circuit breaker trolley for the switch cabinet in the embodiment of the invention.

[0023] Figure 3 It is a structural schematic diagram of the pushing component in an embodiment of the invention.

[0024] Figure 4 This is an internal bottom view of the bottom frame in the embodiment of the invention.

[0025] Figure 5 for Figure 4 A partial enlarged view of point A in the middle.

[0026] Figure 6 This is an exploded view of the moving frame and the rotating bevel gear ring in an embodiment of the invention.

[0027] Reference numerals: 1, bottom frame;

[0028] 2. Circuit breaker trolley;

[0029] 3. Front frame;

[0030] 4. Pushing assembly; 401. Side plate; 402. Guide chute; 403. Slide rod; 404. Connecting seat; 405. Lifting frame; 406. Vertical rod; 407. Screw; 408. Top plate; 409. Through slot; 410. Support slide;

[0031] 5. Moving assembly; 501. Moving wheel; 502. Rotating rod; 503. Pulley; 504. Transmission belt;

[0032] 6. Movable transmission assembly; 601. Mounting plate; 602. Drive motor; 603. Rotating shaft; 604. First clamping bar; 605. Crossbar; 606. Moving frame; 607. Positioning bevel gear ring; 608. Collar; 609. Rotating bevel gear ring; 6091. Clamping slot; 610. Transmission bevel gear; 611. Transmission gear ring; 612. Rotating gear; 613. Second clamping bar; 614. Snap ring; 615. Electric cylinder; 616. First contact sensor; 617. Second contact sensor;

[0033] 7. Arc extinguishing chamber;

[0034] 8. Moving contact;

[0035] 9. Aviation socket;

[0036] 10. Signal lead;

[0037] 11. Third contact sensor;

[0038] 12. Camera;

[0039] 13. Temperature sensor. DETAILED DESCRIPTION

[0040] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0041] The specific implementation of the present invention is described in detail below with reference to specific embodiments.

[0042] In one embodiment of the present invention, see Figure 1-Figure 2 , an automatic circuit breaker trolley 2 for a switch cabinet, comprising a bottom frame 1, on which a circuit breaker trolley 2 is movably provided, a plurality of arc extinguishing chambers 7 are equidistantly provided on the circuit breaker trolley 2, and a moving contact 8 is mounted on the arc extinguishing chamber 7, a front frame 3 is mounted on the end of the bottom frame 1 away from the circuit breaker trolley 2, an aviation socket 9 is provided on the bottom frame 1, and a signal lead 10 is mounted on the aviation socket 9, a pushing assembly 4 connected to the circuit breaker trolley 2 is provided between the circuit breaker trolley 2 and the front frame 3, a movable transmission assembly 6 movably connected to the pushing assembly 4 is provided inside the bottom frame 1, and a moving assembly 5 movably connected to the movable transmission assembly 6 is provided on both sides of the bottom frame 1, a camera 12 and a temperature sensor 13 are respectively mounted on the top of the side of the front frame 3 close to the circuit breaker trolley 2, and a third contact sensor 11 is mounted on the end of the bottom frame 1 close to the moving contact 8.

[0043] In this embodiment, in the initial state, the position of the pushing component 4 is fixed and at the lowest point. At this time, the circuit breaker trolley 2, the arc extinguishing chamber 7 and the moving contact 8 are close to the front frame 3, and the movable transmission component 6 drives the bottom frame 1 to move toward the inside of the switch cabinet by connecting with the moving component 5. The third contact sensor 11 will send a signal after contacting the inner wall of the switch cabinet, and the control module (not shown in the figure) will control the corresponding components in the movable transmission component 6 to work, release the transmission between the movable transmission component 6 and the moving component 5, and fix the position of the moving component 5. At the same time, the connection between the movable transmission component 6 and the pushing component 4 is realized, and the control module controls the movable transmission component 6 to work in the forward direction. The movable transmission component 6 pushes the circuit breaker trolley 2 away from the front frame 3 by connecting with the pushing component 4, so that the moving contact 8 on the arc extinguishing chamber 7 is fully and completely in contact with the static contact in the switch cabinet, and the contact pressure is balanced, thereby avoiding the local heating caused by the inability of the movable contact 8 and the static contact to fully contact. Safety hazard problem; when the temperature sensor 13 detects that the temperature inside the switch cabinet exceeds a preset range, the temperature sensor 13 sends the abnormal data to the control module, and the control module controls the movable transmission component 6 to work in reverse. The movable transmission component 6 drives the circuit breaker trolley 2 close to the front frame 3 by connecting with the pushing component 4, so that the distance between the circuit breaker trolley 2 and the front frame 3 is at the minimum value, thereby releasing the connection between the moving contact 8 and the static contact; when the device needs to be pulled out, the control module releases the connection between the movable transmission component 6 and the pushing component 4 by controlling the corresponding components in the movable transmission component 6 to work, and realizes the connection between the movable transmission component 6 and the moving component 5. The movable transmission component 6 drives the bottom frame 1 to move toward the outside of the switch cabinet by driving the moving component 5 to work, thereby realizing the extraction of the device, facilitating subsequent maintenance and processing of the device, and has the effects of intelligent detection, automatic and orderly movement, full contact between the movable and static contacts, safety and reliability, convenient operation, and simple and practical operation.

[0044] In one embodiment of the present invention, see Figure 1-Figure 3The pushing assembly 4 includes a plurality of through slots 409 provided on the end of the bottom frame 1 of the signal lead 10 away from the front frame 3. A support slide 410 connected to the circuit breaker trolley 2 is slidably provided at the through slot 409. A side plate 401 is symmetrically installed on the side of the circuit breaker trolley 2 close to the front frame 3. A guide slot 402 is provided on the side plate 401. A slide rod 403 is movably provided between the circuit breaker trolley 2 and the front frame 3. The ends of the slide rod 403 are respectively connected to the corresponding guide slots 40 2 sliding fit, a vertical pole 406 is installed on the bottom frame 1 and is located between the circuit breaker trolley 2 and the front frame 3. The end of the vertical pole 406 away from the bottom frame 1 is connected to a top plate 408. A screw 407 is rotatably connected between the top plate 408 and the bottom frame 1. The screw 407 is movably connected to the movable transmission assembly 6. A lifting frame 405 is slidably provided on the vertical pole 406 and is threadedly connected to the screw 407. The lifting frame 405 is provided with a connecting seat 404 connected to the sliding rod 403.

[0045] In this embodiment, in the initial state, the distance between the circuit breaker trolley 2 and the front frame 3 is the smallest, the slide rod 403 is located at the lowest point of the guide slot 402, and the lifting frame 405 is located at the lowest point. When the moving and static contacts need to be connected, the control module adjusts the components of the movable transmission assembly 6 so that the movable transmission assembly 6 is connected to the screw rod 407. The movable transmission assembly 6 drives the screw rod 407 to rotate forward. The screw rod 407 drives the lifting frame 405 by being threadedly connected to the lifting frame 405 and the vertical rod 406 slidingly cooperates with the lifting frame 405. When the circuit breaker trolley 2 moves upward, the lifting frame 405 drives the slide bar 403 to move upward synchronously by being connected to the connecting seat 404. The slide bar 403 drives the circuit breaker trolley 2 to move away from the front frame 3 by slidingly cooperating with the guide slide groove 402 and the supporting slide plate 410 and the through groove 409. The circuit breaker trolley 2 drives the moving contact 8 and the arc extinguishing chamber 7 to move synchronously, achieving full contact between the moving contact 8 and the static contact, ensuring balanced contact pressure, and avoiding safety hazards caused by insufficient contact between the moving contact 8 and the static contact, resulting in local heating.

[0046] The guide slot 402 includes a straight slot 1, an inclined slot, and a straight slot 2. The two ends of the inclined slot are respectively connected to the bottom end of the straight slot 1 and the top end of the straight slot 2. The height of the straight slot 1 is greater than that of the straight slot 2, and the straight slot 1 is located on the side of the straight slot 2 away from the circuit breaker trolley 2. In the initial state, the slide bar 403 slides with the straight slot 2. When the moving contact 8 is fully and completely in contact with the static contact, the slide bar 403 slides with the straight slot 1. By fixing the horizontal distance between the straight slot 1 and the straight slot 2, it can be ensured that the contact distance between the moving contact 8 and the static contact is sufficient, thereby ensuring full and complete contact between the moving contact 8 and the static contact, and avoiding the safety hazard caused by insufficient contact between the moving contact 8 and the static contact, resulting in local heating.

[0047] The lifting frame 405 is configured as a square frame to facilitate heat dissipation inside the device.

[0048] In one embodiment of the present invention, see Figure 1-Figure 5 The moving component 5 includes four moving wheels 501 symmetrically distributed on the outside of the bottom frame 1, and a rotating rod 502 passing through the bottom frame 1 is connected between the corresponding moving wheels 501. The rotating rod 502 rotates with the inner wall of the bottom frame 1. A pulley 503 is provided on each of the two rotating rods 502, and a transmission belt 504 is connected between the two pulleys 503.

[0049] In this embodiment, the control module controls the components of the movable transmission assembly 6 to connect the movable transmission assembly 6 with the rotating rod 502. At this time, the position of the circuit breaker trolley 2 is fixed.

[0050] When the bottom frame 1 needs to be moved into the switch cabinet, the movable transmission assembly 6 drives the rotating rod 502 to rotate forward. The rotating rod 502 is connected to the pulley 503 and the transmission belt 504 to drive another rotating rod 502 to rotate synchronously. The two rotating rods 502 drive the moving wheels 501 at both ends to rotate forward, driving the bottom frame 1 to move into the switch cabinet.

[0051] When the bottom frame 1 needs to be moved to the outside of the switch cabinet, the movable transmission assembly 6 drives the rotating rod 502 to rotate in the opposite direction. The rotating rod 502 drives another rotating rod 502 to rotate synchronously by being connected to the pulley 503 and the transmission belt 504. The two rotating rods 502 drive the bottom frame 1 to move to the outside of the switch cabinet by driving the moving wheels 501 at both ends to rotate in the opposite direction.

[0052] In one embodiment of the present invention, see Figures 1-6, the movable transmission assembly 6 includes a mounting plate 601 symmetrically mounted on the top inner side of the bottom frame 1, a rotating shaft 603 is rotatably provided between the mounting plates 601, the end of the rotating shaft 603 is connected to a driving motor 602, a cross bar 605 is connected between the two mounting plates 601, a movable frame 606 is slidably provided on the outer side of the cross bar 605, one end of the movable frame 606 is connected to a limiting bevel gear ring 607 movably sleeved on the outer side of the rotating shaft 603, and the other end of the movable frame 606 is connected to a collar 608, and a rotating bevel gear ring 609 sleeved on the outer side of the rotating shaft 603 is rotatably provided inside the collar 608, and a plurality of first clips 604 are distributed circumferentially on the rotating shaft 603, and a clip groove 6091 is provided inside the rotating bevel gear ring 609 that slides with the first clip 604, and a clip groove 6091 that slides with the first clip 604 is provided inside the bottom frame 1, and a clip groove 6091 that slides with the screw 407 and extends into the bottom frame 1 is provided inside the bottom frame 1 A transmission bevel gear 610 is connected to one end of the interior, and the transmission bevel gear 610 is alternately meshed with a rotating bevel gear ring 609 and a limiting bevel gear ring 607. A rotating gear 612 that is movably meshed with a transmission gear ring 611 is installed on the rotating rod 502. Several second clamping strips 613 are distributed circumferentially on the rotating rod 502. A clamping ring 614 that is movably engaged with the second clamping strip 613 is provided on the outer side of the rotating rod 502. The clamping ring 614 is connected to the moving frame 606. An electric cylinder 615 connected to the moving frame 606 is installed on the mounting plate 601. A third contact sensor 11 is provided on the side of the bottom frame 1 close to the interior of the switch cabinet, a first contact sensor 616 that is movably in contact with the top of the lifting frame 405 is provided on the top plate 408, and a second contact sensor 617 that is movably in contact with the bottom of the lifting frame 405 is provided on the top of the bottom frame 1.

[0053] In this embodiment, in the initial state, the limiting bevel gear ring 607 is engaged with the transmission bevel gear 610, so that the screw 407 cannot rotate, and the position of the circuit breaker trolley 2 can be fixed. The transmission gear ring 611 is engaged with the rotating gear 612, and the snap ring 614 is away from the second clamping strip 613. At this time, the rotating rod 502 is in a movable state, and the screw 407 is in a fixed state.

[0054] When the device needs to be moved into the switch cabinet, the drive motor 602 drives the rotating shaft 603 to rotate forward. The rotating shaft 603 drives the rotating bevel gear ring 609 and the transmission gear ring 611 to rotate synchronously by slidingly engaging with the first clamping strip 604 and the clamping slot 6091. The transmission gear ring 611 drives the rotating rod 502 to rotate forward by meshing with the rotating gear 612, thereby moving the bottom frame 1 into the switch cabinet.

[0055] When the third contact sensor 11 contacts the inner wall of the switch cabinet, the control module receives the signal and controls the electric cylinder 615 to work. The electric cylinder 615 contracts and pulls the moving frame 606 to move accordingly by sliding cooperation between the moving frame 606 and the cross bar 605 and the limiting bevel gear ring 607 and the rotating shaft 603, thereby releasing the meshing state between the limiting bevel gear ring 607 and the transmission bevel gear 610. At the same time, the moving frame 606 drives the rotating bevel gear ring 609 and the transmission gear ring 611 to move synchronously through the ring 608 and the rotating bevel gear ring 609, thereby realizing the meshing between the rotating bevel gear ring 609 and the transmission bevel gear 610, releasing the meshing between the transmission gear ring 611 and the rotating gear 612, and the moving frame 606 drives the snap ring 614 to move synchronously, so that the snap ring 614 is in a clamping state with the second clamping strip 613, thereby fixing the angle of the rotating rod 502, and then fixing the position of the bottom frame 1, which can effectively prevent the moving wheel 501 from rotating.

[0056] The driving motor 602 drives the rotating shaft 603 to continue to rotate forward. The rotating shaft 603 drives the rotating bevel gear ring 609 and the transmission gear ring 611 to rotate synchronously by sliding with the first clamping strip 604 and the clamping slot 6091. The rotating bevel gear ring 609 drives the screw rod 407 to rotate forward by meshing with the transmission bevel gear 610. The screw rod 407 drives the lifting frame 405 to move upward by being threadedly connected to the lifting frame 405 and the vertical rod 406 slidingly cooperates with the lifting frame 405. The lifting frame 405 drives the sliding rod 403 to move upward synchronously by being connected to the connecting seat 404. The slide bar 403 drives the circuit breaker trolley 2 to move away from the front frame 3 by slidingly cooperating with the guide slide groove 402 and the supporting slide plate 410 and the through groove 409. The circuit breaker trolley 2 drives the moving contact 8 and the arc extinguishing chamber 7 to move synchronously, achieving full contact between the moving contact 8 and the static contact, ensuring balanced contact pressure. When the moving contact 8 and the static contact are fully in contact, the top of the lifting frame 405 contacts the first contact sensor 616. The control module receives the signal and controls the drive motor 602 to stop working, thereby ensuring stable connection between the moving contact 8 and the static contact.

[0057] The camera 12 can be used to capture the working status of the switch cabinet device, and the temperature sensor 13 can be used to detect the temperature in the switch room of the switch cabinet in real time. When the switch cabinet is working, if the temperature of the switch room in the switch cabinet exceeds a preset range, the control module receives the signal and controls the drive motor 602 to work in the reverse direction. The drive motor 602 drives the rotating shaft 603 to rotate in the reverse direction. The rotating shaft 603 drives the rotating bevel gear ring 609 and the transmission gear ring 611 to rotate synchronously by sliding with the first clamping strip 604 and the clamping slot 6091. The rotating bevel gear ring 609 rotates synchronously with the transmission bevel gear 610. The meshing manner drives the screw rod 407 to rotate in the opposite direction, the screw rod 407 drives the lifting frame 405 downward by being threadedly connected to the lifting frame 405 and the vertical rod 406 slidingly cooperates with the lifting frame 405, the lifting frame 405 drives the slide rod 403 to move downward synchronously by being connected to the connecting seat 404, the slide rod 403 drives the circuit breaker trolley 2 to move toward the front frame 3 by slidingly cooperating with the guide slide groove 402 and the supporting slide plate 410 slidingly cooperating with the through groove 409, the circuit breaker trolley 2 drives the moving contact 8 and the arc extinguishing chamber 7 to move synchronously, realizing the separation between the moving contact 8 and the static contact,

[0058] When the bottom of the lifting frame 405 contacts the second contact sensor 617, the control module receives the signal and controls the electric cylinder 615 to work. The electric cylinder 615 extends and pushes the moving frame 606 to move accordingly by sliding cooperation between the moving frame 606 and the cross bar 605 and the limiting bevel gear ring 607 and the rotating shaft 603, thereby realizing the engagement between the limiting bevel gear ring 607 and the transmission bevel gear 610. At the same time, the moving frame 606 drives the rotating bevel gear ring 609 and the transmission gear ring 611 to move synchronously through the ring 608 and the rotating bevel gear ring 609, thereby releasing the engagement between the rotating bevel gear ring 609 and the transmission bevel gear 610, and realizing the engagement between the transmission gear ring 611 and the rotating gear 612. In addition, the moving frame 606 drives the snap ring 614 to move synchronously, releasing the engagement between the snap ring 614 and the second clamping strip 613, and the rotating rod 502 is in a movable state.

[0059] The driving motor 602 drives the rotating shaft 603 to continue rotating in the reverse direction. The rotating shaft 603 drives the rotating bevel gear ring 609 and the transmission gear ring 611 to rotate synchronously by slidingly engaging with the first clamping strip 604 and the clamping slot 6091. The transmission gear ring 611 drives the rotating rod 502 to rotate in the reverse direction by meshing with the rotating gear 612, thereby moving the bottom frame 1 to the outside of the switch cabinet to facilitate maintenance of the device.

[0060] The spacing between the limiting bevel gear ring 607 and the transmission bevel gear 610 is consistent with the spacing between the transmission gear ring 611 and the rotating gear 612 , and the spacing between the transmission gear ring 611 and the rotating gear 612 is consistent with the clamping length between the second clamping strip 613 and the clamping ring 614 .

[0061] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. An automatic circuit breaker trolley for a switchgear, comprising a base frame, a circuit breaker trolley movably mounted on the base frame, a plurality of arc extinguishing chambers equidistantly mounted on the circuit breaker trolley, movable contacts mounted on the arc extinguishing chambers, a front frame mounted on an end of the base frame away from the circuit breaker trolley, an aviation socket mounted on the base frame on a side of the front frame away from the circuit breaker trolley, a signal lead mounted on the aviation socket, and characterized in that: A sliding assembly connected to the circuit breaker trolley is provided between the circuit breaker trolley and the front frame, a movable transmission assembly movably connected to the sliding assembly is provided inside the bottom frame, and moving assemblies movably connected to the movable transmission assembly are provided on both sides of the bottom frame. A camera and a temperature sensor are respectively installed on the top of the side of the front frame close to the circuit breaker trolley, and a third contact sensor is installed on the end of the bottom frame close to the moving contact.

2. The automatic circuit breaker trolley for switchgear according to claim 1, characterized in that: The pushing assembly includes several through slots arranged at the end of the signal lead bottom frame away from the front frame, and a supporting slide connected to the circuit breaker trolley is slidably provided at the through slot, and a side plate is symmetrically installed on the side of the circuit breaker trolley close to the front frame, and a guide slide is provided on the side plate. A slide rod is movably provided between the circuit breaker trolley and the front frame, and the ends of the slide rod slide with the corresponding guide slide grooves respectively. A vertical pole located between the circuit breaker trolley and the front frame is installed on the bottom frame, and a top plate is connected to the end of the vertical pole away from the bottom frame. A screw is rotatably connected between the top plate and the bottom frame, and the screw is movably connected to the movable transmission assembly. A lifting frame threadedly connected to the screw is slidably provided on the vertical pole, and a connecting seat connected to the slide rod is provided on the lifting frame.

3. The automatic circuit breaker trolley for switchgear according to claim 2, characterized in that: The moving assembly includes four moving wheels symmetrically distributed on the outside of the bottom frame. A rotating rod passing through the bottom frame is connected between the corresponding moving wheels. The rotating rod rotates in conjunction with the inner wall of the bottom frame. Both rotating rods are provided with pulleys, and a transmission belt is connected between the two pulleys.

4. The automatic circuit breaker trolley for a switch cabinet according to claim 3, characterized in that: The movable transmission assembly includes a mounting plate symmetrically mounted on the top inner side of the bottom frame, a rotating shaft is provided for rotation between the mounting plates, the end of the rotating shaft is connected to a driving motor, a cross bar is connected between the two mounting plates, a movable frame is provided for sliding on the outer side of the cross bar, one end of the movable frame is connected to a limiting bevel gear ring movably sleeved on the outer side of the rotating shaft, the other end of the movable frame is connected to a collar, a rotating bevel gear ring sleeved on the outer side of the rotating shaft is provided for rotation inside the collar, a plurality of first clips are distributed circumferentially on the rotating shaft, a clip groove is provided inside the rotating bevel gear ring for slidingly cooperating with the first clip, and a clip groove is provided inside the bottom frame for rotation with a screw extending into one end of the bottom frame The transmission bevel gears are connected to each other, and the transmission bevel gears are alternately meshed with the rotating bevel gear ring and the limiting bevel gear ring. A rotating gear that is movably meshed with the transmission gear ring is installed on the rotating rod. Several second clips are distributed circumferentially on the rotating rod. A clip that is movably engaged with the second clip is provided on the outer side of the rotating rod. The clip is connected to the moving frame. An electric cylinder connected to the moving frame is installed on the mounting plate. A third contact sensor is provided on the side of the bottom frame close to the inside of the switch cabinet, a first contact sensor that is movably in contact with the top of the lifting frame is provided on the top of the bottom frame, and a second contact sensor that is movably in contact with the bottom of the lifting frame is provided on the top of the bottom frame.

5. The automatic circuit breaker trolley for switchgear according to claim 2, characterized in that: The guide chute includes a straight chute 1, an inclined chute and a straight chute 2. The two ends of the inclined chute are respectively connected to the bottom end of the straight chute 1 and the top end of the straight chute 2. The height of the straight chute 1 is greater than that of the straight chute 2 and the straight chute 1 is located on the side of the straight chute 2 away from the circuit breaker trolley.

6. The automatic circuit breaker trolley for switchgear according to claim 2, characterized in that: The lift box is set to a square box.

7. The automatic circuit breaker trolley for a switch cabinet according to claim 4, characterized in that: The distance between the limiting bevel gear ring and the transmission bevel gear is consistent with the distance between the transmission gear ring and the rotating gear.

8. The automatic circuit breaker trolley for a switch cabinet according to claim 4, characterized in that: The distance between the transmission gear ring and the rotating gear is consistent with the clamping length between the second clamping strip and the clamping ring.

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