Primary and secondary fused package circuit breaker

Abstract

The application discloses a primary and secondary fusion complete set of pole-mounted circuit breaker, which comprises a mounting seat, a movable plate and a closing pole, the movable plate is arranged at the rear side of the mounting seat, the closing pole is rotatably arranged at the rear side of the mounting seat, the middle section of the closing pole is rotatably connected with the movable plate, the end of the closing pole extending into the mounting seat is provided with a plurality of sliding grooves, each sliding groove is slidably provided with a protrusion, the front and back surfaces of the protrusion are convex, a transmission ring is rotatably arranged on the inner wall of the mounting seat, a clamping groove is formed in the middle section of the transmission ring, when the closing pole is pushed into the mounting seat, the edge of the clamping groove pushes the protrusion, so that the protrusions are contracted along the sliding grooves to the axial direction of the closing pole, the closing pole is connected with the transmission ring, a cable is arranged at the rear side of the mounting seat, an enclosure is fixed on the movable plate, the middle section of the enclosure is sleeved with the outer periphery of the middle section of the cable, the enclosure and the movable plate move synchronously with the closing pole, the connection or disconnection of the closing pole and the closure or exposure of the connection end of the cable are synchronously completed through one-time push-pull action, and the switching between the operation and the maintenance state is concentrated in the action of the closing pole.

Description

Technical Field

[0001] This invention relates to the field of circuit breaker technology, specifically to a primary and secondary integrated pole-mounted circuit breaker. Background Technology

[0002] The integrated primary and secondary pole-mounted circuit breaker is an outdoor power distribution device that integrates the circuit breaker body with secondary equipment such as instrument transformers and control units. It is widely used for the segmentation and protection of overhead lines in power distribution networks. Pole-mounted equipment is exposed outdoors for a long time and requires regular pole climbing for maintenance or replacement of instrument transformers and secondary cables. Therefore, switching between the circuit breaker's operating and maintenance states is a high-frequency operation in daily maintenance.

[0003] Currently, common primary and secondary integrated pole-mounted circuit breakers involve two independent operations when switching between operating and maintenance states. The first is the insertion and removal of the closing terminal. The closing terminal is the shaft that the operator rotates to perform opening and closing. During maintenance, the closing terminal needs to be pulled outwards to disengage it from the internal mechanism. Rotating the closing terminal at this time allows it to idle, preventing accidental triggering of opening or closing. After maintenance, the closing terminal is pushed back to restore operational functionality. The second is the protection of the cable connection ends. During maintenance, the protective cover covering the cable connection ends needs to be removed to expose the wiring. After maintenance, the protective cover is reinstalled. These two operations are independent; pushing and pulling the closing terminal and removing and installing the protective cover must be performed separately. This involves many steps at height, is time-consuming, and the protective cover is usually a separate part, easily falling or being lost after removal.

[0004] In addition, the positioning of the closing pin in both the pushing and pulling directions often uses different limiting methods such as snap rings, steel balls, and pins. There is a set for each of the pushing and pulling ends, and the parts are scattered, making assembly and maintenance inconvenient.

[0005] In summary, existing primary and secondary integrated pole-mounted circuit breakers require separate operations for switching between operating and maintenance states, including pushing and pulling the closing terminal and protecting the cable ends. The positioning of the closing terminal in two directions relies on different limit components, resulting in a fragmented overall structure and cumbersome operation.

[0006] There is a need in this field for a more compact, integrated primary and secondary pole-mounted circuit breaker that combines the closing action of the pole with the cable end protection action, shares the same logic for pushing in and pulling out, and has a more compact structure. Summary of the Invention

[0007] The purpose of this invention is to provide a primary and secondary integrated pole-mounted circuit breaker to solve the above problems. It simultaneously completes the connection or disconnection of the closing terminal and the sealing or exposure of the cable connection end through a single push-pull action, and concentrates the switching between operation and maintenance states on the action of the closing terminal, as detailed below.

[0008] To achieve the above objectives, the present invention provides the following technical solution: The present invention provides a primary and secondary integrated pole-mounted circuit breaker, including a mounting base, a movable plate and a closing terminal block. The movable plate is located on the rear side of the mounting base, and the closing terminal block is rotatably located on the rear side of the mounting base. The middle section of the closing terminal block is rotatably connected to the movable plate. The end of the closing pin that extends into the mounting base has multiple sliding grooves, and a protrusion slides within each groove. Both sides of the protrusion are convex. A transmission ring is rotatably mounted on the inner wall of the mounting base, and a slot is provided in the middle of the transmission ring. When the closing pin is pushed into the mounting base, the edge of the slot pushes against the protrusion, causing each protrusion to retract along the sliding groove towards the axis of the closing pin, thus connecting the closing pin with the transmission ring. A cable is provided on the rear side of the mounting base, and a cover is fixed on the movable plate. The middle part of the cover is fitted around the outer periphery of the middle section of the cable. The cover and the movable plate move synchronously with the closing pin. When the closing pin exits the mounting base, the closing pin separates from the transmission ring, and the cover moves away from the connection end of the cable synchronously with the movable plate, exposing the connection end.

[0009] Using the aforementioned integrated pole-mounted circuit breaker, pressing down on the transmission block causes it to slide down the vertical groove. The transmission ramp presses against the ramp of the pad, pushing the movable plate along with the closing pin away from the mounting base. During the closing pin's retraction, the rear convex surface of the protrusion is pushed against the edge of the slot, causing the protrusion to retract radially and pass through the slot, separating the closing pin from the transmission ring. Simultaneously, the movable plate drives the cover to retract, the cover disengages from the retaining ring, exposing the cable connection end. After the closing pin retracts, the retaining block disengages from the docking slot, and the handle rotates downwards under gravity, touching and pushing open the corresponding ramp on the ramp ring. It falls between adjacent ramps and is stopped by a limit switch. At this point, the device is in maintenance mode; the closing pin rotates freely, the opening and closing functions are disconnected, and the cable connection end is exposed for maintenance.

[0010] The operator pulls the transmission block upwards, causing it to move along the vertical groove and releasing the wedge-shaped thrust on the pad. The locking spring pushes the connecting plate forward, pulling the movable plate closer to the mounting base via the support column. The movable plate then pushes the closing pin into the mounting base simultaneously. During the insertion of the closing pin, the front convex surface of the protrusion is pushed against the edge of the slot. After the protrusion radially retracts through the slot, it pops out and resets under the action of the locking spring. The closing pin connects with the transmission ring. The handle leaves the inclined column range during the insertion process and continues to rotate slightly downwards under gravity. The locking block automatically slides into the docking slot. At the same time, the movable plate moves the cover forward, and the cover engages with the locking ring. The flaps retract inwards under the constraint of the locking ring, tightly gripping the cable connection end. At this point, the device is in operation, and the closing pin can rotate normally to perform opening and closing operations. The cable connection end is sealed and protected.

[0011] Preferably, a guide post is fixed inside the slide groove, penetrating adjacent protrusions, and a locking spring is sleeved in the middle section of the guide post, with its two ends respectively abutting against the inner wall of the slide groove near the axis of the closing column and the side wall of the protrusion.

[0012] Preferably, the outer circumferential end of the closing column is also fixed with a plurality of locking blocks arranged in a ring around the axis of the closing column, and a docking ring is fixed on the side of the transmission ring facing the closing column. The docking ring is a hollow ring, and a plurality of docking grooves adapted to the locking blocks are opened in the middle of the docking ring. The closing column rotates so that the locking blocks dock with the docking grooves, thereby synchronizing the angle of the closing column and the docking ring. A handle is fixed on the end of the closing column away from the docking ring for rotating to adjust the angle of the closing column, and a pull groove is also opened at the end of the handle.

[0013] Preferably, the movable plate is fixed with multiple support columns on the side facing the mounting base, and the mounting base has multiple through slots corresponding to the support columns on its rear side. The support columns pass through the through slots, and the ends of the multiple support columns are fixed with the same connecting plate. The middle section of the support column is fitted with a snap-fit ​​spring with its two ends abutting against the connecting plate and the inner wall of the mounting base, respectively. The snap-fit ​​spring continuously pushes the connecting plate to move towards the mounting base, so that the movable plate drives the closing column to move synchronously so that the locking block and the docking slot remain connected.

[0014] Preferably, a pad is fixed in the middle section of the movable plate, and the middle of the pad is penetrated by a support column located in the movable plate. The thickness of the pad gradually increases from bottom to top. A transmission block is provided between the pad and the mounting base. The thickness of the transmission block gradually increases from bottom to top. The surface of the transmission block that is in contact with the pad is a transmission slope. A plurality of vertical grooves are opened on the outer wall of the pad on the rear side of the mounting base. A plurality of slide bars that are slidably connected to the vertical grooves are fixed to the side wall of the mounting base that is in contact with the transmission block. Pressing down on the transmission block can increase the distance between the pad and the mounting base to push the movable plate to move.

[0015] Preferably, the transmission block has vertically distributed strip grooves in the middle, and the support column that passes through the pad block passes through the transmission block through the strip grooves. When the movable plate moves towards the mounting base, it drives the pad block to move synchronously and squeezes the transmission block upward. At the same time, the lower end of the strip groove is limited by the support column and always maintains the connection with the vertical groove. The top of the transmission block is also fixed with multiple anti-slip strips to facilitate pressing.

[0016] Preferably, a gradually decreasing diameter buckle is fixed to a section of the cover near the mounting base. A buckle is fixed to the rear side of the mounting base corresponding to the cable position, and an inner ring concentrically arranged with the buckle is also fixed to the rear side of the mounting base. The diameters of the buckle, inner ring, and buckle cover gradually increase from one side near the mounting base to the other side. Multiple movable grooves are provided in the middle of the buckle cover. The buckle cover is made of elastic material. The buckle cover reduces its diameter and seals the cable connection end by passing through the movable grooves and being constrained by the buckle.

[0017] Preferably, the end of the cover away from the buckle is also fixed with a guide ring that fits against the outer wall of the cable. The guide ring is slidably connected to the end of the cable to ensure the stability of the cover as it moves along the cable.

[0018] Preferably, a bracket is fixed to the side wall of the mounting base near the closing pin, and an inclined ring is fixed to the end of the bracket. The inclined ring gradually tilts downward from the side near the bracket to the side away from the bracket. The inclined ring is provided with multiple inclined posts, each of which extends along the tilt direction of the inclined ring and can slide back and forth in this direction. The multiple inclined posts are distributed in a ring around the axis of the inclined ring. After the closing pin is removed from the mounting base, the locking block disengages from the docking slot. Under the action of gravity, the closing pin rotates downward. During the withdrawal process, the handle touches the corresponding inclined post and pushes the inclined post to slide upward along the inclined ring. After the handle passes the opened inclined post, it falls into the outer circumference of the adjacent inclined post and is stopped by the limit. When the closing pin is pushed back into the mounting base, the handle leaves the inclined post and continues to rotate downward. During this rotation, the locking block is aligned with the docking slot by gravity. A support block is fixed to the upper end of the inclined post to prevent the inclined post from sliding down and separating from the inclined ring.

[0019] Preferably, the top of the mounting base is fixed with the circuit breaker body, and the top of the mounting base is also fixed with multiple lifting rings. Pull rings for carrying are also fixed on both sides of the mounting base, and a handle is provided on one side of the mounting base. A connecting groove is provided on the side of the movable plate near the closing column, and the movable plate is rotatably connected to the closing column through the connecting groove while maintaining position synchronization. A slot is provided on the side of the movable plate away from the cover, and the movable plate is fixedly connected to the cover through the slot.

[0020] The beneficial effects are as follows: 1. When the closing pin is pushed in, the edge of the slot pushes against the front convex surface of the protrusion. After the protrusion radially retracts through the slot, it pops out and resets under the action of the locking spring. The closing pin and the transmission ring are connected. At the same time, the movable plate drives the cover to cover the cable connection end. When the closing pin is withdrawn, the edge of the slot pushes against the rear convex surface of the protrusion. The protrusion retracts again through the slot. The closing pin and the transmission ring separate. The cover opens synchronously to expose the connection end. Both sides of the protrusion are convex, so that the pushing and withdrawing directions are completed by the same set of protrusion retraction logic. The resistance to entering and exiting is equal. The closing pin maintains its own rotatable operation function while completing the push-pull switching. The opening and closing operation is not affected by the mode switching. One push-pull action simultaneously completes the connection or disconnection of the closing pin and the sealing or exposure of the cable connection end. The switching between operation and maintenance states is concentrated on the action of the closing pin.

[0021] 2. Through the cooperation of the guide post and the locking spring inside the slide groove, the protrusion automatically pops out and resets after passing through the slot, and locks itself behind the transmission ring. No additional protrusion reset operation is required from the operator while pushing or pulling the closing pin; it locks immediately upon pushing in and stops when fully engaged, with a smooth and uninterrupted motion.

[0022] 3. By engaging the locking block at the end of the closing terminal with the mating groove of the mating ring on the transmission ring, the closing terminal is pushed into the mounting base and the locking block is inserted into the mating groove. The closing terminal and the transmission ring achieve circumferential angle synchronization. Rotating the closing terminal will drive the internal transmission of the circuit breaker to perform opening and closing via the transmission ring. Pushing and pulling switching does not affect the rotation operation function of the closing terminal. Both pushing and pulling and rotation operations can be completed on the same handle.

[0023] 4. By fitting the wedge surfaces of the pad and the transmission block together, pressing down on the transmission block converts the vertical displacement into the horizontal backward displacement of the movable plate via the transmission ramp. The transmission block slides down the vertical groove in a straight line, with a single and clear direction of force. Pulling up on the transmission block releases the wedge surface thrust, and the movable plate automatically returns to its original position under the action of the snap-fit ​​spring. The strip groove in the middle of the transmission block is penetrated by the support column, and the lower end of the strip groove is limited by the support column. The transmission block will not detach from the vertical groove at the upper limit position. Pressing and rebound are both completed within the stroke of the vertical groove, and the transmission block always remains in the assembled state on the mounting base.

[0024] 5. Through the conical surface cooperation of the cover, the buckle, and the inner ring, when the cover moves closer to the mounting base with the movable plate, the outer conical surface of the cover slides along the inner conical surface of the buckle. The flaps of the cover retract inward under the constraint of the buckle to hug the cable connection end. The conical surfaces of the inner wall of the cover, the inner wall of the buckle, and the outer wall of the inner ring fit together to form a seal. The conical structure makes the sealing action automatically completed with the axial movement of the cover, without the need for a separate sealing component tightening step.

[0025] 6. Through the cooperation of the inclined ring and the inclined column, after the closing column is removed from the mounting base, the handle rotates downward under the action of gravity. After the handle touches and pushes open the corresponding inclined column, it falls between the adjacent inclined columns and is stopped by the limit to prevent the handle from swinging freely downward. When the closing column is pushed in again, the handle has a downward rotation tendency in the gap between the inclined columns. Under this tendency, the locking block automatically fits into the groove of the docking slot. During the pushing process, it naturally slides into the docking. There is no need for the operator to manually adjust the circumferential angle of the closing column. The support block at the upper end of the inclined column prevents the inclined column from sliding down and detaching from the inclined ring. After the closing column is pushed in, the handle leaves the range of the inclined column. The inclined column that was pushed open slides back to its original position automatically under the action of gravity. Attached Figure Description

[0026] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0027] Figure 1 This is a three-dimensional structural schematic diagram of the present invention; Figure 2 This is a structural breakdown diagram of the present invention; Figure 3This is a partial structural schematic diagram of the present invention; Figure 4 This is a partial structural breakdown diagram of the present invention; Figure 5 This is a schematic diagram of the structure of the cover of the present invention; Figure 6 This is a schematic diagram of the structure of the bracket of the present invention; Figure 7 This is a schematic diagram of the closing column of the present invention; Figure 8 This is a structural breakdown diagram of the closing column of the present invention; Figure 9 This is a partial structural breakdown diagram of the closing pin of the present invention; Figure 10 This is the present invention. Figure 9 A magnified structural diagram at point A; Figure 11 This is a schematic diagram of the structure of the present invention; Figure 12 This is a structural breakdown diagram of the present invention from another perspective; Figure 13 This is the present invention. Figure 12 A magnified structural diagram at point B; Figure 14 This is a partial three-dimensional structural schematic diagram of the present invention; Figure 15 This is a schematic diagram of the transmission block of the present invention; Figure 16 This is a schematic diagram of the transmission block structure from another angle of the present invention; Figure 17 This is a schematic diagram of the structure of the movable plate of the present invention.

[0028] The annotations in the attached figures are explained as follows: 1. Mounting base; 101. Circuit breaker body; 102. Pull ring; 103. Drive ring; 103a. Connecting ring; 103b. Slot; 104. Snap ring; 105. Inner ring; 106. Through slot; 107. Vertical slot; 108. Handle; 109. Lifting ring; 2. Movable plate; 201. Cover; 201a. Guide ring; 202. Snap ring; 202a. Movable slot; 203. Pad; 204. Support column; 205. Connecting plate; 206. Snap ring 1. Closing spring; 207. Connecting groove; 208. Slot; 3. Closing valve column; 301. Handle; 301a. Pull groove; 302. Locking block; 303. Sliding groove; 304. Guide column; 305. Protrusion; 305a. Protruding surface; 306. Locking spring; 4. Bracket; 401. Inclined column; 402. Support block; 403. Inclined ring; 5. Transmission block; 501. Strip groove; 502. Transmission inclined surface; 503. Anti-slip strip; 504. Sliding strip; 6. Cable. Detailed Implementation

[0029] To make the objectives, technical solutions, and advantages of this invention clearer, the technical solutions of this invention will be described in detail below. Obviously, the described embodiments are merely some embodiments of this invention, and not all embodiments. Based on the embodiments of this invention, all other implementation methods obtained by those skilled in the art without creative effort are within the scope of protection of this invention.

[0030] See Figures 1-17 As shown, this invention provides a primary and secondary integrated pole-mounted circuit breaker, including a mounting base 1, a movable plate 2, and a closing pin 3. The mounting base 1 serves as the load-bearing base for the entire device, with the circuit breaker body 101 fixed to its top. Symmetrical lifting rings 109 are provided on both sides of the top of the mounting base 1 for attaching steel cables during hoisting. Pull rings 102 and handles 108 are fixed to the left and right side walls of the mounting base 1, respectively, for gripping and applying force during handling. A movable plate 2 is provided on the rear side of the mounting base 1, maintaining a distance between the movable plate 2 and the rear wall of the mounting base 1. A closing pin 3 is located near the middle of the movable plate 2, horizontally passing through the movable plate 2 and extending into the interior of the mounting base 1. A connecting groove 207 is provided on the side of the movable plate 2 facing the closing pin 3. The section is located in the connecting groove 207 and forms a rotatable connection with the movable plate 2. The closing column 3 can rotate around its own axis and move synchronously with the movable plate 2 in the axial direction. When the closing column 3 is pushed forward, the movable plate 2 moves forward synchronously. When the closing column 3 is pulled back, the movable plate 2 moves back synchronously. The end of the closing column 3 that is exposed outside the mounting base 1 is fixed with a handle 301. The end of the handle 301 has a pull groove 301a for the operator to hook in with an insulated operating rod. Rotating the closing column 3 performs the opening and closing operation, while pushing and pulling the closing column 3 switches the operating mode and maintenance mode of the device. A cable 6 is provided on the rear side of the mounting base 1. The connection end of the cable 6 is located at the wiring position on the rear wall of the mounting base 1. A cover 201 is fixed on the movable plate 2. A slot 208 is provided on the side of the movable plate 2 away from the closing column 3. The cover 201 is fixedly connected to the movable plate 2 through the slot 208. The middle part of the cover 201 is fitted around the outer periphery of the middle section of the cable 6. When the movable plate 2 moves back and forth, it drives the cover 201 to move synchronously. When the movable plate 2 is close to the mounting base 1, the cover 201 covers the connection end of the cable 6. When the movable plate 2 is away from the mounting base 1, the cover 201 is pulled back, exposing the connection end of the cable 6 for maintenance.

[0031] The front end of the closing pin 3, which extends into the mounting base 1, has multiple grooves 303 along its outer circumference. Each groove 303 contains a slidingly fitted protrusion 305. The protrusion 305 can reciprocate along the groove 303 towards or away from the axis of the closing pin 3. Both the outer and inner sides of the protrusion 305 facing the closing pin 3 are convex surfaces 305a, meaning both the front and back of the protrusion 305 are outwardly bulging arcs. A guide post 304 is fixed within the groove 303, passing through the middle of the protrusion 305 along the sliding direction of the groove 303. The protrusion 305 slides along the guide post 304. A locking spring 306 is fitted in the middle section of the guide post 304. One end rests against the inner wall of the slide groove 303 near the axis of the closing column 3, and the other end rests against the side wall of the protrusion 305 facing the axis. The locking spring 306 continuously pushes the protrusion 305 towards the outer circumference of the closing column 3, so that the protrusion 305 remains extended out of the slide groove 303 when it is not subjected to external force. The inner wall of the mounting base 1 is provided with a transmission ring 103 corresponding to the position of the front end of the closing column 3. The transmission ring 103 is a ring-shaped part that can rotate around its own axis in the mounting base 1. A slot 103b is opened in the middle of the transmission ring 103. The inner diameter of the slot 103b is slightly larger than the outer diameter of the front end of the closing column 3, but smaller than the diameter of the circumference of the outer end face of the protrusion 305 when the protrusion 305 extends out of the slide groove 303. When the closing pin 3 is pushed into the mounting base 1 and the front convex surface 305a of the protrusion 305 contacts the edge of the slot 103b, the edge of the slot 103b abuts against the front convex surface 305a of the protrusion 305. As the closing pin 3 continues to push forward, the edge of the slot 103b slides along the arc-shaped contour of the front convex surface 305a, pressing the protrusion 305 along the slide groove 303 towards the axis of the closing pin 3. The protrusion 305 compresses the locking spring 306 and contracts radially, allowing the front end of the closing pin 3 to pass through the slot 103b. After the protrusion 305 has completely passed through the slot 103b, the pressure of the edge of the slot 103b on the protrusion 305 disappears, and the locking spring 306 pushes the protrusion 305 outward along the guide post 304 (see details). Figure 10 When the protrusion 305 is restored to its extended state, the rear convex surface 305a of the protrusion 305 is stuck on the rear side of the transmission ring 103, and the closing column 3 cannot be retracted, thus forming a connection with the transmission ring 103. When the closing pin 3 is pushed outward, the rear convex surface 305a of the protrusion 305 contacts the edge of the slot 103b. The edge of the slot 103b slides along the arc-shaped contour of the rear convex surface 305a, which also pushes the protrusion 305 towards the axis. After the protrusion 305 retracts, it passes through the slot 103b, and the closing pin 3 separates from the transmission ring 103. Both sides of the protrusion 305 are convex surfaces 305a, so that whether the closing pin 3 is pushed in or out, the edge of the slot 103b can smoothly press the protrusion 305 into the slide groove 303 along the arc-shaped surface. The resistance to passage in the two directions is equal. The elastic force of the locking spring 306 determines the magnitude of the force that the protrusion 305 needs to overcome to retract. The force is greater than the pulling force of the locking spring 206 on the movable plate 2. Therefore, the locking spring 206 cannot pull the closing pin 3 into the mounting base 1 by itself. The operator must apply external force through the transmission block 5 or the handle 301 to complete the state switching.

[0032] Multiple support columns 204 are fixed to the side of the movable plate 2 facing the mounting base 1. Each support column 204 extends horizontally towards the mounting base 1. A through groove 106 is provided on the rear wall of the mounting base 1 corresponding to the position of each support column 204. The support columns 204 pass through the through groove 106 and extend into the interior of the mounting base 1. The ends of the multiple support columns 204 are fixed to the same connecting plate 205, which is located inside the mounting base 1. A snap-fit ​​spring 206 is fitted in the middle section of each support column 204. One end of the snap-fit ​​spring 206 abuts against the front side of the connecting plate 205, and the other end abuts against the inner side of the rear wall of the mounting base 1. The snap-fit ​​spring 206 is in a compressed state, continuously pushing the connecting plate 205 forward. The support columns 204 pull the movable plate 2, causing the movable plate 2 to always tend to move closer to the mounting base 1. A pad 203 is fixed in the middle section of the movable plate 2, located on the side of the movable plate 2 facing the mounting base 1. A support column 204 passes through the middle of the pad 203. The cross-section of the pad 203 is wedge-shaped, and its thickness gradually increases from bottom to top. That is, the side of the pad 203 facing the mounting base 1 is an inclined surface, and it protrudes towards the mounting base 1 as it gets higher. A transmission block 5 is sandwiched between the pad 203 and the rear wall of the mounting base 1. The cross-section of the transmission block 5 is also wedge-shaped, and its thickness gradually increases from bottom to top. The side of the transmission block 5 facing the pad 203 is a transmission inclined surface 502, which fits against the inclined surface of the pad 203. The side of the transmission block 5 facing the rear wall of the mounting base 1 is a vertical plane, on which multiple sliding strips 504 are fixed. Multiple vertical grooves 107 are opened on the rear wall of the mounting base 1 corresponding to the position of the transmission block 5. The vertical grooves 107 extend in the vertical direction, and the sliding strips 504 are embedded in the vertical grooves 107 one by one to form a sliding fit. The transmission block 5 can only slide up and down along the vertical grooves 107 and cannot shift back and forth. A vertically extending slot 501 is also provided in the middle of the transmission block 5 (see details). Figure 15The support 204 that passes through the pad 203 also passes through the strip groove 501. The support 204 can slide relative to each other in the strip groove 501. When the transmission block 5 moves to the limit position, the lower end of the strip groove 501 is blocked by the corresponding support 204 to prevent the transmission block 5 from coming out of the vertical groove 107. The top of the transmission block 5 is provided with anti-slip strips 504 and 503 for the operator to press and apply force with their fingers. When disconnected, the operator presses down on the transmission block 5, and the transmission block 5 slides down along the vertical groove 107. Its transmission inclined surface 502 presses against the inclined surface of the pad block 203. Since the transmission block 5 is constrained by the slide bar 504 and the vertical groove 107, it can only move up and down. The wedge thrust pushes the pad block 203 away from the mounting seat 1. The pad block 203 drives the movable plate 2 to move backward. The movable plate 2 pulls the closing column 3 backward synchronously through the connecting groove 207. The protrusion 305 on the closing column 3 retracts radially under the push of the edge of the slot 103b and passes through the slot 103b. The closing column 3 separates from the transmission ring 103. At the same time as the movable plate 2 moves backward, the locking spring 206 is further compressed. When connected, the operator pulls the transmission block 5 upward, and the transmission block 5 moves upward along the vertical groove 107. The pressure of the transmission inclined surface 502 on the pad 203 gradually weakens. The locking spring 206 pushes the connecting plate 205 forward, and the movable plate 2 is pulled closer to the mounting seat 1 by the support column 204. The movable plate 2 drives the closing column 3 to push forward synchronously. The protrusion 305 retracts under the push of the edge of the slot 103b and passes through the slot 103b. The locking spring 306 pops the protrusion 305 out, and the closing column 3 and the transmission ring 103 reconnect. At the same time as the movable plate 2 moves forward, the inclined surface of the pad 203 pushes the transmission block 5 upward along the vertical groove 107, and the transmission block 5 automatically returns to the initial height. During non-operation periods, the transmission block 5 will not be squeezed out by the locking spring 206. The tension of the locking spring 206 is transmitted to the movable plate 2 via the support column 204. The movable plate 2 is transmitted to the protrusion 305 via the closing pin 3. The rear convex surface 305a of the protrusion 305 abuts against the rear side of the transmission ring 103. The tension of the locking spring 206 is lower than the force required for the protrusion 305 to pass through the slot 103b. The wedge surface at the transmission block 5 remains stationary and in contact, and the device is stably locked in operation.

[0033] The cover 201 is fixed to the side of the movable plate 2 away from the closing pin 3, and moves back and forth with the movable plate 2. The middle part of the cover 201 is fitted around the outer periphery of the middle section of the cable 6. The cable 6 passes through the inner cavity of the cover 201 and leaves a gap between it and the cover 201. The cover 201 does not drag the cable 6 when it slides axially. A buckle 202 is fixed to the end of the cover 201 facing the mounting base 1. The diameter of the buckle 202 gradually decreases from the side closer to the cover 201 to the side closer to the mounting base 1, forming a conical cylinder. Multiple movable grooves 202a are opened in the middle of the buckle 202 (see details). Figure 5The movable grooves 202a are distributed circumferentially along the cover 202, dividing the cylindrical wall of the cover 202 into multiple independent petals. The cover 202 is made of elastic material, and each petal can elastically open outward or retract inward. The rear wall of the mounting base 1 is fixed with a buckle 104 and an inner ring 105 at the position corresponding to the connection end of the cable 6. The inner ring 105 is concentrically set with the buckle 104 and is located inside the buckle 104. The diameters of the buckle 104, the inner ring 105 and the cover 202 gradually increase from the side closer to the mounting base 1 to the side farther away from the mounting base 1, and the three have the same taper direction. As the movable plate 2 approaches the mounting base 1, the cover 201 moves the buckle cover 202 forward synchronously. The front end of the buckle cover 202 first fits into the outer circumference of the inner ring 105. Then, the outer conical surface of the buckle cover 202 contacts the inner conical surface of the buckle ring 104. The movable plate 2 continues to move forward, and the inner conical surface of the buckle ring 104 slides along the outer conical surface of the buckle cover 202, gradually squeezing the flaps of the buckle cover 202 inward. After the movable plate 2 is pushed into place, the flaps of the buckle cover 202, under the constraint of the buckle ring 104, tightly hug the outer circumference of the cable 6 connection end. The conical surfaces of the inner wall of the buckle cover 202, the inner wall of the buckle ring 104, and the outer wall of the inner ring 105 fit together to form a seal. When the movable plate 2 moves away from the mounting base 1, the cover 201 moves the buckle cover 202 forward. As the cover 202 retracts, the outer conical surface of the cover 202 slides in the opposite direction along the inner conical surface of the buckle 104. After the flaps lose the constraint of the buckle 104, they open outwards by their own elasticity. The cover 202 disengages from the buckle 104. After the movable plate 2 retracts into place, the cover 202 completely leaves the connection end of the cable 6, and the connection end is exposed. The end of the cover 201 away from the cover 202 is also fixed with a guide ring 201a. The inner hole of the guide ring 201a fits against the outer wall of the cable 6, forming a sliding fit with the cable 6. When the cover 201 moves back and forth, the guide ring 201a slides along the outer wall of the cable 6 to keep the force on both ends of the cover 201 balanced and prevent the cover 201 from swaying or shaking.

[0034] A bracket 4 is fixed to the side wall of the mounting base 1 near the closing column 3. An inclined ring 403 is fixed to the end of the bracket 4. The inclined ring 403 is a ring-shaped part that gradually slopes upwards from the side closest to the bracket 4 towards the side furthest from the bracket 4. That is, there is an angle between the plane containing the inclined ring 403 and the vertical plane. Multiple inclined columns 401 are provided on the inclined ring 403 (see details). Figure 6Each inclined column 401 extends along the inclined direction of the inclined ring 403 and can slide back and forth on the inclined ring 403 along this direction. Multiple inclined columns 401 are distributed in a ring around the axis of the inclined ring 403, with gaps between adjacent inclined columns 401. A support block 402 is fixed to the upper end of each inclined column 401. The outer diameter of the support block 402 is larger than the fitting hole diameter of the inclined column 401 on the inclined ring 403. When the inclined column 401 slides down to the limit position, the support block 402 abuts against the upper end face of the inclined ring 403 to prevent the inclined column 401 from detaching from the inclined ring 403. The inclined ring 403 tilts upward. When not subjected to external force, each inclined column 401 slides down naturally under the action of gravity to the position where the support block 402 abuts against the inclined ring 403. After the closing pin 3 exits the mounting base 1, the locking block 302 disengages from the docking slot, and the closing pin 3 loses its circumferential angle constraint. The end of the handle 301 is relatively heavy, and under the action of gravity, it drives the closing pin 3 to rotate downward around its own axis. The rotation radius of the handle 301 is larger than that of the closing pin 3 body. During the rotation, the handle 301 passes through the area where each inclined pin 401 is located on the inclined ring 403 in turn. After the handle 301 touches the corresponding inclined pin 401 on the current path, when it continues to rotate, it pushes the inclined pin 401 upward along the inclined ring 403. The inclined pin 401 slides upward on the inclined ring 403. After the handle 301 passes the inclined pin 401, it falls into the gap between the opened inclined pin 401 and the next unopened inclined pin 401. The outer circumference of the handle 301 simultaneously contacts the two adjacent inclined pins 401, and the continued rotation of the closing pin 3 is limited and stopped. When the closing pin 3 is pushed into the mounting base 1 again, the handle 301 separates from the inclined pin 401. The locking block 302 automatically rotates and fits the edge of the docking groove under the downward rotation trend. As the closing pin 3 continues to move forward, the locking block 302 slides into the docking groove, and the closing pin 3 and the docking ring 103a achieve angular synchronization. After the closing pin 3 is pushed into the mounting base 1, the handle 301 moves forward with the closing pin 3 and leaves the axial range where the inclined pin 401 is located. The inclined pin 401, which was pushed open by the handle 301, loses its support and slides back to its original position along the inclined ring 403 under the action of gravity. The support block 402 abuts against the upper surface of the inclined ring 403 again, preparing for the next withdrawal of the closing pin 3.

[0035] Using the above structure, pressing down on the transmission block 5 causes it to slide down the vertical groove 107. Its transmission inclined surface 502 presses against the inclined surface of the pad 203, pushing the movable plate 2 along with the closing pin 3 away from the mounting base 1. During the withdrawal of the closing pin 3, the rear convex surface 305a of the protrusion 305 is pushed against the edge of the slot 103b, causing the protrusion 305 to radially contract and pass through the slot 103b, separating the closing pin 3 from the transmission ring 103. Simultaneously, the movable plate 2 drives the cover 201 to retract, the cover 202 disengages from the buckle ring 104, exposing the cable 6 connection end. After the closing pin 3 withdraws, the locking block 302 disengages from the docking groove, and the handle 301 rotates downwards under gravity, touching and pushing open the corresponding inclined pin 401 on the inclined ring 403, falling between adjacent inclined pins 401 and stopping. At this point, the device is in maintenance mode, the rotation of the closing pin 3 is idle, the opening and closing function is disconnected, and the cable 6 connection end is exposed for maintenance.

[0036] The operator pulls the transmission block 5 upward, and the transmission block 5 moves upward along the vertical groove 107, releasing the wedge-shaped thrust on the pad block 203. The locking spring 206 pushes the connecting plate 205 forward, and the support column 204 pulls the movable plate 2 closer to the mounting base 1. The movable plate 2 drives the closing column 3 to be pushed into the mounting base 1 simultaneously. During the pushing process of the closing column 3, the front convex surface 305a of the protrusion 305 is pushed by the edge of the slot 103b. After the protrusion 305 radially retracts through the slot 103b, it pops out and resets under the action of the locking spring 306. The closing column 3 is connected to the transmission ring 103. During the pushing process, the handle 301 leaves the range of the inclined column 401 and continues to rotate slightly downward under the action of gravity. The locking block 302 automatically slides into the docking groove. At the same time, the movable plate 2 drives the cover 201 to move forward. The cover 202 is fitted into the buckle ring 104. The petals retract inward under the constraint of the buckle ring 104 and hug the connection end of the cable 6. At this point, the device is in operation, and the closing column 3 can rotate normally to perform opening and closing. The connection end of the cable 6 is sealed and protected.

[0037] 1. When the closing pin 3 is pushed in, the edge of the slot 103b abuts against the front convex surface 305a of the protrusion 305. After the protrusion 305 radially retracts through the slot 103b, it pops out and resets under the action of the locking spring 306. The closing pin 3 and the transmission ring 103 are connected. At the same time, the movable plate 2 drives the cover 201 to cover the connection end of the cable 6. When the closing pin 3 is withdrawn, the edge of the slot 103b abuts against the rear convex surface 305a of the protrusion 305. The protrusion 305 retracts again through the slot 103b, and the closing pin 3 separates from the transmission ring 103. The cover 201 retracts synchronously to expose the connection end. Both sides of the protrusion 305 are convex surfaces 305a, so that the push-in and pull-out directions are completed by the same set of protrusion 305 retraction logic. The resistance to push-in and pull-out is equal. The closing column 3 maintains its own rotatable operation function while completing the push-pull switching. The opening and closing operation is not affected by the mode switching. One push-pull action simultaneously completes the connection or disconnection of the closing column 3 and the sealing or exposure of the cable 6 connection end, concentrating the switching between operation and maintenance states on the action of the closing column 3. Through the cooperation of the guide post 304 and the locking spring 306 inside the slide groove 303, the protrusion 305 automatically pops out and resets after passing through the slot 103b and locks into the rear side of the transmission ring 103. There is no need for the operator to perform the additional operation of resetting the protrusion 305 while pushing or pulling the closing column 3. It locks as soon as it is pushed in and stops as soon as it is in place, and the action is smooth and uninterrupted. By engaging the locking block 302 at the end of the closing column 3 with the mating groove of the mating ring 103a on the transmission ring 103, the closing column 3 is pushed into the mounting base 1 and the locking block 302 is inserted into the mating groove. The closing column 3 and the transmission ring 103 achieve circumferential angle synchronization. Rotating the closing column 3 can drive the internal transmission of the circuit breaker to perform opening and closing through the transmission ring 103. Pushing and pulling switching does not affect the rotation operation function of the closing column 3. Both pushing and pulling and rotation operations can be completed on the same handle 301. By fitting the pad 203 with the wedge surface of the transmission block 5, pressing down on the transmission block 5 can convert the vertical displacement into the horizontal backward displacement of the movable plate 2 via the transmission inclined surface 502. The transmission block 5 slides down the vertical groove 107 in a straight line, with a single and clear direction of force. Pulling up on the transmission block 5 releases the wedge surface thrust, and the movable plate 2 automatically returns to its original position under the action of the snapping spring 206. The strip groove 501 in the middle of the transmission block 5 is penetrated by the support column 204, and the lower end of the strip groove 501 is limited by the support column 204. The transmission block 5 will not disengage from the vertical groove 107 at the upper limit position. Pressing and rebound are both completed within the stroke of the vertical groove 107, and the transmission block 5 always remains in the assembled state on the mounting base 1. Through the conical engagement of the cover 202, the buckle 104, and the inner ring 105, when the cover 201 approaches the mounting base 1 along with the movable plate 2, the outer conical surface of the cover 202 slides along the inner conical surface of the buckle 104. Under the constraint of the buckle 104, the flaps of the cover 202 contract inward to hug the connection end of the cable 6. The conical surfaces of the inner wall of the cover 202, the inner wall of the buckle 104, and the outer wall of the inner ring 105 fit together to form a seal. The conical structure allows the sealing action to be completed automatically with the axial movement of the cover 201, without the need for a separate sealing element pressing step. With the cooperation of the inclined ring 403 and the inclined column 401, after the closing column 3 exits the mounting base 1, the handle 301 rotates downward under the action of gravity. The handle 301 touches and pushes open the corresponding inclined column 401 and falls between the adjacent inclined columns 401, where it is stopped by the limit to prevent the handle 301 from swinging freely downward. When the closing column 3 is pushed in again, the handle 301 has a downward rotation tendency in the gap of the inclined columns 401. Under this tendency, the locking block 302 automatically fits into the groove of the docking slot. During the pushing process, it naturally slides into the docking. There is no need for the operator to manually adjust the circumferential angle of the closing column 3. The support block 402 at the upper end of the inclined column 401 prevents the inclined column 401 from sliding down and getting off the inclined ring 403. After the closing column 3 is pushed in, the handle 301 leaves the range of the inclined column 401. The inclined column 401 that was pushed open slides back to its original position and automatically resets under the action of gravity.

[0038] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in the present invention should be included within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the scope of the claims.

Claims

1. A primary and secondary integrated pole-mounted circuit breaker, characterized in that: It includes a mounting base (1), a movable plate (2) and a closing pin (3). The movable plate (2) is located on the rear side of the mounting base (1), and the closing pin (3) is rotatably located on the rear side of the mounting base (1). The middle section of the closing pin (3) is rotatably connected to the movable plate (2). The end of the closing pin (3) that extends into the mounting base (1) is provided with multiple sliding grooves (303), and a protrusion (305) is slidably fitted in each sliding groove (303). Both sides of the protrusion (305) are convex surfaces (305a). The inner wall of the mounting base (1) is provided with a transmission ring (103), and a slot (103b) is provided in the middle of the transmission ring (103). When the closing pin (3) is pushed into the mounting base (1), the edge of the slot (103b) abuts against the protrusion (305), so that each protrusion (305) moves along the sliding groove (303) toward the closing pin (305). The axial direction is contracted to connect the closing pin (3) with the transmission ring (103). A cable (6) is provided on the rear side of the mounting base (1). A cover (201) is fixed on the movable plate (2). The middle part of the cover (201) is sleeved on the outer periphery of the middle section of the cable (6). The cover (201) and the movable plate (2) move synchronously with the closing pin (3). When the closing pin (3) exits the mounting base (1), the closing pin (3) separates from the transmission ring (103), and the cover (201) leaves the connection end of the cable (6) synchronously with the movable plate (2) and exposes the connection end.

2. The integrated primary and secondary pole-mounted circuit breaker according to claim 1, characterized in that: The guide post (304) that passes through the adjacent protrusion (305) is fixed in the groove (303), and the middle section of the guide post (304) is fitted with a locking spring (306) whose two ends abut against the inner wall of the groove (303) near the axis of the closing column (3) and the side wall of the protrusion (305).

3. The integrated primary and secondary pole-mounted circuit breaker according to claim 2, characterized in that: The closing pin (3) is also fixed with a plurality of locking blocks (302) arranged in a ring around the axis of the closing pin (3). The transmission ring (103) is fixed with a docking ring (103a) on the side facing the closing pin (3). The docking ring (103a) is a hollow ring. The docking ring (103a) has a plurality of docking grooves adapted to the locking blocks (302) in the middle. The closing pin (3) can be rotated to make the locking blocks (302) dock with the docking grooves so that the closing pin (3) and the docking ring (103a) can be closed synchronously. The closing pin (3) is fixed with a handle (301) at the end away from the docking ring (103a) to adjust the angle of the closing pin (3). The handle (301) is also provided with a pull groove (301a) at the end.

4. The integrated primary and secondary pole-mounted circuit breaker according to claim 3, characterized in that: The movable plate (2) is fixed with multiple support columns (204) on the side facing the mounting base (1), and the mounting base (1) has multiple through slots (106) corresponding to the support columns (204) on the rear side. The support columns (204) pass through the through slots (106), and the ends of the multiple support columns (204) are fixed with the same connecting plate (205). The middle section of the support column (204) is fitted with a snap-fit ​​spring (206) with its two ends abutting against the connecting plate (205) and the inner wall of the mounting base (1) respectively. The snap-fit ​​spring (206) continuously pushes the connecting plate (205) to move towards the mounting base (1), so that the closing column (3) is moved synchronously through the movable plate (2) to keep the locking block (302) connected to the docking slot.

5. The integrated primary and secondary pole-mounted circuit breaker according to claim 4, characterized in that: A pad (203) is fixed in the middle section of the movable plate (2), and the middle part of the pad (203) is penetrated by a support column (204) located in the movable plate (2). The thickness of the pad (203) gradually increases from bottom to top. A transmission block (5) is provided between the pad (203) and the mounting base (1). The thickness of the transmission block (5) gradually increases from bottom to top. The surface of the transmission block (5) that is in contact with the pad (203) is a transmission inclined surface (502). A plurality of vertical grooves (107) are provided on the outer wall of the pad (203) on the rear side of the mounting base (1). A plurality of slide bars (504) that are slidably connected to the vertical grooves (107) are fixed on the side wall of the mounting base (1) of the transmission block (5). Pressing down the transmission block (5) can increase the distance between the pad (203) and the mounting base (1) to push the movable plate (2) to move.

6. The primary and secondary integrated pole-mounted circuit breaker according to claim 5, characterized in that: The transmission block (5) has a vertically distributed strip groove (501) in the middle, and the support column (204) that passes through the pad (203) passes through the transmission block (5) through the strip groove (501). When the movable plate (2) moves towards the mounting base (1), it drives the pad (203) to move synchronously and squeezes the transmission block (5) to move upward. At the same time, the lower end of the strip groove (501) is limited by the support column (204) and always maintains the connection with the vertical groove (107). The top of the transmission block (5) is also fixed with multiple anti-slip strips (504) (503) for easy pressing.

7. The integrated primary and secondary pole-mounted circuit breaker according to claim 1, characterized in that: The cover (201) is fixed with a gradually decreasing diameter buckle cover (202) near the mounting base (1). A buckle ring (104) is fixed on the rear side of the mounting base (1) corresponding to the position of the cable (6). An inner ring (105) is also fixed on the rear side of the mounting base (1) and is concentrically arranged with the buckle ring (104). The diameters of the buckle ring (104), the inner ring (105) and the buckle cover (202) gradually increase from the side near the mounting base (1) to the other side. The buckle cover (202) has multiple movable grooves (202a) in the middle. The buckle cover (202) is made of elastic material. The buckle cover (202) is sealed at the cable (6) connection end by reducing its diameter after being constrained by the buckle ring (104) through the movable grooves (202a).

8. The integrated primary and secondary pole-mounted circuit breaker according to claim 7, characterized in that: The end of the cover (201) away from the buckle (202) is also fixed with a guide ring (201a) that fits against the outer wall of the cable (6). The guide ring (201a) is slidably connected to the end of the cable (6) to ensure the stability of the cover (201) moving along the cable (6).

9. The integrated primary and secondary pole-mounted circuit breaker according to claim 3, characterized in that: A bracket (4) is fixed to the side wall of the mounting base (1) near the closing column (3). An inclined ring (403) is fixed to the end of the bracket (4). The inclined ring (403) gradually tilts downward from the side near the bracket (4) to the side away from the bracket (4). Multiple inclined columns (401) are provided on the inclined ring (403). Each inclined column (401) extends along the inclined direction of the inclined ring (403) and can slide back and forth along this direction. The multiple inclined columns (401) are distributed in a ring around the axis of the inclined ring (403). After the closing column (3) is removed from the mounting base (1), the locking block (302) disengages from the docking slot handle (301) and is driven by gravity. When the closing pin (3) rotates downward, the handle (301) touches the corresponding inclined pin (401) during the exit process, pushing the inclined pin (401) to slide upward along the inclined ring (403). After the handle (301) passes the opened inclined pin (401), it falls into the outer circumference of the adjacent inclined pin (401) and is stopped by the limit. When the closing pin (3) is pushed into the mounting base (1) again, the handle (301) leaves the inclined pin (401) and continues to rotate downward. During this rotation, the locking block (302) is aligned with the docking groove by gravity. The upper end of the inclined pin (401) is fixed with a support block (402) to prevent the inclined pin (401) from sliding down and separating from the inclined ring (403).

10. The integrated primary and secondary pole-mounted circuit breaker according to claim 1, characterized in that: The top of the mounting base (1) is fixed with a circuit breaker body (101), and the top of the mounting base (1) is also fixed with multiple lifting rings (109). Pull rings (102) for carrying are also fixed on both sides of the mounting base (1), and a handle (108) is provided on one side of the mounting base (1). A connecting groove (207) is provided on the side of the movable plate (2) near the closing column (3), and the position is synchronized with the closing column (3) while being rotatably connected through the connecting groove (207). A slot (208) is provided on the side of the movable plate (2) away from the cover (201), and the movable plate (2) is fixedly connected to the cover (201) through the slot (208).

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