Integrated sealed primary and secondary fusion pole-mounted circuit breaker

Abstract

The invention discloses an integrated sealed primary and secondary fusion pole-mounted circuit breaker in the technical field of circuit breakers, and the integrated sealed primary and secondary fusion pole-mounted circuit breaker comprises a case, a push-pull mechanism, a first elastic mechanism and a second elastic mechanism. A plurality of sets of insulating pull rods extending into the circuit breaker body are installed in the case in an up-down sliding mode, the push-pull mechanisms are fixedly installed in a plurality of sets of supports in the case in a rotating mode, and the top ends of the push-pull mechanisms are fixedly connected with the bottom ends of the insulating pull rods. The two sides of the support are symmetrically provided with two groups of first elastic mechanisms connected with the push-pull mechanism, and the problems that the speed of a movable contact block in an existing circuit breaker cannot be effectively buffered when the movable contact block rapidly gets close to or gets away from a static contact block, and the elastic mechanisms in the circuit breaker are inconvenient to efficiently synchronize energy storage and pressure release of a closing spring and an opening spring; and the operation efficiency, the reliability, the synchronism, the arc extinguishing performance and the like of the circuit breaker are not improved.

Description

Technical Field

[0001] The present invention relates to the technical field of circuit breakers, and in particular to an integrated sealed primary and secondary fusion column mounted circuit breaker. Background Art

[0002] Pole-mounted circuit breakers play a vital role in power distribution networks. They effectively control and protect distribution network lines, ensuring the reliability and security of power supply. With the development of smart grids, pole-mounted circuit breakers with integrated primary and secondary systems are becoming key equipment in distribution networks. They integrate traditional primary equipment (such as the circuit breaker) with secondary equipment (such as protection, measurement, and control units), enabling more precise monitoring and control of the distribution network.

[0003] During the opening and closing operations of existing primary and secondary fusion pole-mounted circuit breakers, only a single elastic mechanism is often used to realize the opening and closing operations, so that the moving contact block in the circuit breaker cannot be effectively buffered and boosted when it quickly approaches or moves away from the static contact block, which is not conducive to reducing contact wear, improving closing reliability, optimizing arc extinguishing performance, etc. In addition, the elastic mechanism in the circuit breaker is not convenient for efficiently synchronizing the energy storage and pressure release of the closing spring and the opening spring, which is not conducive to improving the operating efficiency, reliability, synchronization, etc. of the circuit breaker. Therefore, those skilled in the art provide an integrated sealed primary and secondary fusion pole-mounted circuit breaker to solve the problems raised in the above background technology. Summary of the Invention

[0004] The object of the present invention is to provide an integrated sealed primary and secondary fusion pole-mounted circuit breaker to solve the problems in existing circuit breakers where the moving contact block cannot be effectively buffered when rapidly approaching or moving away from the static contact block, and the elastic mechanism in the circuit breaker is not convenient for efficiently synchronizing the energy storage and pressure release of the closing spring and the opening spring, which is not conducive to improving the operating efficiency, reliability, synchronization, arc extinguishing performance and other problems of the circuit breaker.

[0005] To achieve the above objectives, the present invention provides the following technical solution: an integrated sealed primary and secondary fusion pole-mounted circuit breaker, comprising:

[0006] A chassis, wherein a circuit breaker body for connecting to a power grid is fixedly mounted on the outside of the chassis, and multiple sets of insulating pull rods extending into the interior of the circuit breaker body are slidably mounted in the inside of the chassis;

[0007] A push-pull mechanism, wherein the push-pull mechanism is rotatably installed inside the plurality of brackets fixedly mounted inside the chassis, and the top end of the push-pull mechanism is fixedly connected to the bottom end of the insulating pull rod;

[0008] First elastic mechanism: two sets of first elastic mechanisms connected to the push-pull mechanism are symmetrically installed on both sides of the bracket. Rotating members for limiting the position of the first elastic mechanism are provided on both sides of the bracket. When the push-pull mechanism moves to the end of its stroke, the rotating members can help it complete the positioning through the first elastic mechanism;

[0009] The second elastic mechanism is installed inside the bracket and connected to the push-pull mechanism. When the push-pull mechanism drives the insulating pull rod to move to adjust the closing and opening states of the circuit breaker, the first elastic mechanism and the second elastic mechanism perform a linkage exchange between the free state and the energy storage state.

[0010] As a further description of the above technical solution: the push-pull mechanism includes two groups of symmetrical first connecting rods inside the rotating mounting bracket, a push rod is fixedly installed between the top ends of the two groups of first connecting rods, and the middle part of the push rod is connected to the bottom end of the insulating pull rod through a rotatably mounted second connecting rod.

[0011] As a further description of the above technical solution: the second elastic mechanism includes a bottom frame rod fixedly installed inside the bracket and a top frame rod fixedly installed between the two groups of first connecting rods, and a first spring is installed between the bottom frame rod and the top frame rod.

[0012] As a further description of the above technical solution: multiple groups of parallel arranged first springs are installed between the top frame rods and the top frame rods, and multiple groups of parallel blocking plates are installed on the surfaces of the top frame rods and the top frame rods, and the ends of the first springs are installed between two adjacent groups of blocking plates.

[0013] As a further description of the above technical solution: the first elastic mechanism includes a support seat fixedly mounted on the side of the bracket, a circular ring sliding through a cross sleeve is fixedly mounted on the support seat, a second spring sleeved on the outer ring is installed between the end of the cross sleeve and the support seat, one end of the cross sleeve is fixedly connected to the side of the first connecting rod, and the end of the cross sleeve away from the first connecting rod is in contact with the rotating member.

[0014] As a further description of the above technical solution: a second spring sleeved on the outer ring is installed between the two ends of the cross sleeve and the two ends of the support seat.

[0015] As a further description of the above technical solution: the rotating part includes a rotating rod rotatably connected to the side of the bracket, a rotating ring is fixedly installed on the rotating rod, and the rotating ring is provided with retractable V-shaped parts at both ends for limiting the displacement of the cross sleeve, and a driving part for controlling the synchronous rotation of the rotating rings on both sides is slidably installed inside the chassis.

[0016] As a further description of the above technical solution: the V-shaped part includes two groups of support plates fixedly installed on the rotating circle, and hydraulic rods are fixedly installed on the inner sides of the two groups of support plates, and the output end side of one group of hydraulic rods abuts against the outer ring of the cross sleeve.

[0017] As a further description of the above technical solution: the driving part includes a rectangular frame slidably installed inside the chassis, two sets of parallel racks are provided on the top of the rectangular frame, the outer ring of the rotating circle is provided with a gear ring meshing with the rack, a servo motor is fixedly installed on the bracket, and a turntable is fixedly installed on the output end shaft of the servo motor, and the bottom of the turntable is connected to the rectangular frame through a rotating rocker.

[0018] As a further description of the above technical solution: hanging rings are welded at the four corners of the top of the chassis, and outward-turned mounting plates are provided on both sides of the bottom of the chassis.

[0019] Compared with the prior art, the present invention has the following beneficial effects:

[0020] When the circuit breaker is closed, the moving contact quickly approaches the static contact and then slowly abuts it, reducing arc generation and mechanical impact. When the circuit breaker is opened, the moving contact quickly separates and then slowly disconnects, avoiding arc reignition and contact damage. This unique motion control mechanism significantly improves the arc extinguishing performance and contact life of the circuit breaker. The first elastic mechanism and the second elastic mechanism alternately store and release energy during the closing and opening process, achieving efficient energy utilization, reducing energy storage requirements, and simplifying the design of the energy storage mechanism. Through the stable boosting function of the rotating part, the speed of the moving contact and the static contact during contact and separation is ensured to be stable, reducing mechanical impact and arc faults, and improving the stability and reliability of the circuit breaker. The optimized motion control and energy utilization mechanism reduces the fatigue accumulation of mechanical components and contact wear, extends the service life of the equipment, and reduces maintenance frequency and cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a first schematic diagram of the overall structure of the present invention;

[0022] Figure 2 is a second schematic diagram of the overall structure of the present invention;

[0023] Figure 3 is a first cross-sectional view of the chassis structure of the present invention;

[0024] Figure 4 is a second cross-sectional view of the chassis structure of the present invention;

[0025] Figure 5 Schematic diagram of the structure of the bracket, push-pull mechanism, first spring mechanism, rotating member and second spring mechanism of the present invention;

[0026] Figure 6 A side view of the structure of the bracket, push-pull mechanism, first spring mechanism, rotating member and second spring mechanism of the present invention;

[0027] Figure 7 A bottom view of the bracket, push-pull mechanism, first spring mechanism, rotating member and second spring mechanism structure of the present invention;

[0028] Figure 8 It is a schematic diagram of the structure of the bracket, push-pull mechanism, first spring mechanism and second spring mechanism of the present invention.

[0029] Legend:

[0030] 10. Chassis; 11. Circuit breaker body; 12. Insulation rod; 13. Bracket; 14. Baffle; 15. Lifting ring; 16. Mounting plate;

[0031] 20. Push-pull mechanism; 201. First connecting rod; 202. Push rod; 203. Second connecting rod;

[0032] 30. First elastic mechanism; 301. Support seat; 302. Cross sleeve; 303. Ring; 304. Second spring;

[0033] 40. Rotating member; 401. Rotating rod; 402. Rotating ring; 403. V-shaped member; 4031. Support plate; 4032. Hydraulic rod; 404. Driving member; 4041. Rectangular frame; 4042. Rack; 4043. Ring gear; 4044. Servo motor; 4045. Turntable; 4046. Rocker;

[0034] 50. Second elastic mechanism; 501. Bottom frame rod; 502. Top frame rod; 503. First spring. DETAILED DESCRIPTION

[0035] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0036] See also Figures 1 to 8In an embodiment of the present invention, an integrated sealed primary and secondary fusion pole-mounted circuit breaker includes a chassis 10, a push-pull mechanism 20, a first elastic mechanism 30, and a second elastic mechanism 50. A circuit breaker body 11 for connecting to a power grid is fixedly installed on the outside of the chassis 10. Multiple groups of insulating pull rods 12 extending into the interior of the circuit breaker body 11 are installed in a sliding manner up and down inside the chassis 10. The push-pull mechanism 20 is fixedly installed in the multiple groups of brackets 13 inside the chassis 10, and the push-pull mechanism 20 is rotatably installed inside. The top end of the push-pull mechanism 20 is fixedly connected to the bottom end of the insulating pull rod 12.

[0037] The poles of the primary and secondary fusion column circuit breaker usually adopt a multi-cavity deep fusion pole design, and the vacuum arc chamber, current sensor, voltage sensor and other components are integrated and sealed into the interior, which can effectively improve the insulation performance and reliability of the circuit breaker. A vacuum arc chamber is provided inside the pole to provide a space for closing and opening operations. The moving contact connected to the insulating pull rod 12 inside the vacuum arc chamber contacts the static contact to achieve closing, and the moving and static contacts are separated to achieve opening. The spring operating mechanism arranged inside the chassis 10 is used to control the movement of the insulating pull rod 12 and its connecting components. The input and output terminals provided on the circuit breaker body 11 are used to connect the circuit of the power grid. The other necessary components of the above-mentioned circuit breakers are all existing mature technologies and are not described here in detail.

[0038] The spring operating mechanism provided in the present technical solution is described as follows: two groups of first elastic mechanisms 30 connected to the push-pull mechanism 20 are symmetrically installed on both sides of the bracket 13; a rotating member 40 is provided on both sides of the bracket 13 for limiting the position of the first elastic mechanism 30, and the rotating member 40 can assist the push-pull mechanism 20 to complete its positioning through the first elastic mechanism 30 when the push-pull mechanism 20 moves to the end of the stroke; a second elastic mechanism 50 connected to the push-pull mechanism 20 is installed inside the bracket 13; when the push-pull mechanism 20 drives the insulating pull rod 12 to move to adjust the closing and opening states of the circuit breaker, the first elastic mechanism 30 and the second elastic mechanism 50 perform a linkage exchange between the free state and the energy storage state; in detail, when the push-pull mechanism 20 drives the insulating pull rod 12 to move to the circuit breaker in the closing state, the first elastic mechanism 30 is in a fully energy storage state and the second elastic mechanism 50 is in a free state; when the push-pull mechanism 20 drives the insulating pull rod 12 to move to the circuit breaker in the opening state, the second elastic mechanism 50 is in a fully energy storage state and the first elastic mechanism 30 is in a free state.

[0039] When the primary and secondary fusion column mounted circuit breaker is closed, the rotating member 40 is started, and the rotating member 40 first cancels the upper limit support of the first elastic mechanism 30, and then the rotating member 40 rotates. When the upper limit support of the first elastic mechanism 30 is cancelled, the elastic force generated by the energy storage of the first elastic mechanism 30 can drive the push-pull mechanism 20 to move quickly, and during the movement of the push-pull mechanism 20, the second elastic mechanism 50 can be compressed to store energy. During the stroke in which the first elastic mechanism 30 drives the insulating pull rod 12 to move through the push-pull mechanism 20, the first elastic mechanism 30 stores elastic potential energy when compressed. When the pressure is released, the compressed elastic component will try to return to its free length, thereby generating a boosting force for the movement of the push-pull mechanism 20. The free elastic component of the second elastic mechanism 50 is not compressed or stretched in the initial state, so no energy is stored in the initial state, and no additional force is generated. On the contrary, when the opening operation is performed, the movement states of the first elastic mechanism 30 and the second elastic mechanism 50 are interchanged.

[0040] Therefore, when the insulating pull rod 12 and the movable contact block arranged at its end, which are controlled to move by the first elastic mechanism 30 and the second elastic mechanism 50, perform the closing movement, the initial movement of the movable contact block can quickly approach the static contact block. As the elastic force of the first elastic mechanism 30 decreases and the elastic force of the second elastic mechanism 50 increases, the speed of the movable contact block in the area close to the static contact block will gradually decrease. When the movable contact block slows down when approaching the movable contact block area, the rotating member 40 can help push the first elastic mechanism 30 at a stable speed to control the contact between the movable contact block and the static contact block. Conversely, during the opening movement, the initial movement of the movable contact block can quickly move away from the static contact block. When the movable contact block and the static contact block are about to be completely separated, the rotating member 40 helps push the contact block and the static contact block to separate at a stable speed.

[0041] When the integrated sealed primary and secondary fusion column-mounted circuit breaker is closed: rapid approach can shorten the distance between the moving contact and the static contact, reducing the chance of arc generation; slow abutment can avoid strong impact caused by excessive speed, thereby reducing the intensity and duration of the arc; slow abutment can reduce the mechanical impact between the contacts, avoid contact wear and deformation caused by impact; slow abutment can also ensure more stable contact between the contacts, avoiding poor contact caused by excessive speed.

[0042] When the integrated sealed primary and secondary fusion column-mounted circuit breaker is opened: quick separation can quickly pull open the contacts, reducing the arc formation time; slow disconnection can avoid the arc reignition caused by excessive speed, ensuring that the arc can be extinguished steadily; slow disconnection can reduce arc erosion between the contacts, avoiding contact damage caused by the arc; quick separation can ensure that the moving contact and the static contact can be quickly separated, reducing faults caused by incomplete separation.

[0043] At the same time, the first elastic mechanism 30 and the second elastic mechanism 50 alternately store and release energy during the closing and opening processes, thereby achieving efficient energy utilization. Moreover, when one set of the elastic mechanisms of the first elastic mechanism 30 and the second elastic mechanism 50 is in the energy storage state, the other set of elastic mechanisms is in the free state, which is also beneficial to improving the actual service life of the elastic parts of the elastic mechanism.

[0044] In one embodiment, see Figures 1 to 8 Specifically, the push-pull mechanism 20 includes two groups of symmetrical first connecting rods 201 inside the rotating mounting bracket 13, and a push rod 202 is fixedly installed between the top ends of the two groups of first connecting rods 201. The middle part of the push rod 202 is connected to the bottom end of the insulating pull rod 12 through a rotatably mounted second connecting rod 203. The first elastic mechanism 30 controlled by the rotating member 40 can drive the first connecting rod 201 to rotate, and the two groups of rotating first connecting rods 201 can drive the push rod 202 to rotate. The push rod 202 can drive the insulating pull rod 12 to move up and down through the second connecting rod 203. The end of the second connecting rod 203 can be hinged to the bottom end of the insulating pull rod 12 and rotatably connected to the outside of the push rod 202 through a bearing. At the same time, the moving first connecting rod 201 can also drive the second elastic mechanism 50 to store energy.

[0045] Correspondingly, the second elastic mechanism 50 includes a bottom frame rod 501 fixedly installed inside the bracket 13 and a top frame rod 502 fixedly installed between the two groups of first connecting rods 201. A first spring 503 is installed between the bottom frame rod 501 and the top frame rod 502. Furthermore, multiple groups of parallel arranged first springs 503 are installed between the top frame rod 502 and the bottom frame rod 501. Multiple groups of parallel blocking plates 14 are installed on the surfaces of the top frame rod 502 and the bottom frame rod 501, and the end of the first spring 503 is installed between two adjacent groups of blocking plates 14.

[0046] The bottom frame rod 501 provides a stable bottom support for the first spring 503. The two rotating groups of first connecting rods 201 can drive the first spring 503 to expand and contract to store energy through the top frame rod 502. There are multiple groups of first springs 503 that can provide stable and high-strength elastic force for subsequent driving of the first connecting rod 201. There are also baffles 14 that separate multiple first springs 503, which can facilitate the stable and independent expansion and contraction of multiple groups of first springs 503, thereby ensuring the normal operation of the equipment.

[0047] Correspondingly, the first elastic mechanism 30 includes a support seat 301 fixedly mounted on the side of the bracket 13, and a circular ring 303 sliding through the cross sleeve 302 is fixedly mounted on the support seat 301, and a second spring 304 sleeved on the outer ring of the circular ring 303 is installed between the end of the cross sleeve 302 and the support seat 301, one end of the cross sleeve 302 is fixedly connected to the side of the first connecting rod 201, and the end of the cross sleeve 302 away from the first connecting rod 201 is in contact with the rotating member 40, and further, a second spring 304 sleeved on the outer ring of the circular ring 303 is installed between both ends of the cross sleeve 302 and both ends of the support seat 301.

[0048] The support seat 301 can provide corresponding support for the second spring 304 and the ring 303. The elastic force of the second spring 304 can control the cross sleeve 302 to slide on the ring 303, and the cross sleeve 302 can drive the first connecting rod 201 to rotate or the cross sleeve 302 rotates following the rotation of the first connecting rod 201. Two groups of second springs 304 are provided for extension and contraction to efficiently store energy.

[0049] Based on the above embodiments, see Figures 1 to 8 Specifically, the rotating member 40 includes a rotating rod 401 rotatably connected to the side of the bracket 13, a rotating circle 402 is fixedly installed on the rotating rod 401, and the rotating circle 402 is provided with retractable V-shaped members 403 at both ends for limiting the displacement of the cross sleeve 302. A driving member 404 for controlling the synchronous rotation of the rotating circles 402 on both sides is slidably installed inside the chassis 10, wherein the V-shaped member 403 includes two groups of support plates 4031 fixedly installed on the rotating circle 402, and hydraulic rods 4032 are fixedly installed on the inner sides of the two groups of support plates 4031, and the output end side of one group of hydraulic rods 4032 abuts against the outer circle of the cross sleeve 302.

[0050] The operation of the driving member 404 can control the rotation of the rotating circle 402, and the rotation of the rotating circle 402 drives the rotating rod 401 to rotate. The rotating rod 401 can provide corresponding rotation support for the rotating circle 402. At the same time, the rotating circle 402 can drive the V-shaped member 403 connected to it to rotate during the rotation process. The two ends of the V-shaped member 403 can provide stable limiting support for the cross sleeve 302 when the moving contact block at the top of the insulating pull rod 12 moves to the closing or opening limit state. Before the driving member 404 is operated, the V-shaped member 403 abuts against the end of the cross sleeve 302 and shrinks first. The cross sleeve 302 is pushed by the spring to move rapidly on the ring 303. The other end of the V-shaped member 403 rotates with the driving member 404 and can approach the cross sleeve 302 when the cross sleeve 302 is slowly decelerated by the two sets of springs, thereby realizing that the rotating member 40 provides a stable boost for the moving contact block at the top of the insulating pull rod 12 at the moving end of the stroke.

[0051] The V-shaped part 403 currently has two groups of hydraulic rods 4032, and is provided with a hydraulic rod 4032 that provides stable support for the hydraulic rod 4032. The extension and retraction of the hydraulic rod 4032 is convenient for remote operation under the control of the power equipment. When the hydraulic rod 4032 contracts, it is convenient to release the energy stored in the elastic component. The hydraulic rod 4032 is extended to follow the rotation of the driving part 404 to provide stable thrust when the insulating pull rod 12 moves to a position close to the limit. The V-shaped part 403 can also use a telescopic rod controlled by an electromagnet structure.

[0052] In detail, the driving member 404 includes a rectangular frame 4041 slidably mounted inside the chassis 10, two sets of parallel racks 4042 are provided on the top of the rectangular frame 4041, the outer ring of the rotating circle 402 is provided with a gear ring 4043 meshing with the rack 4042, a servo motor 4044 is fixedly mounted on the bracket 13, and a turntable 4045 is fixedly mounted on the output end shaft of the servo motor 4044, and the shaft can movably pass through the bottom plate of the bracket 13, and the bottom of the turntable 4045 is connected to the rectangular frame 4041 through a rotatably connected rocker 4046, and both ends of the rocker 4046 can be hinged to the components to realize the rotation connection.

[0053] Start the servo motor 4044, which can drive the turntable 4045 to rotate through its output shaft. The turntable 4045 can push and pull the rectangular frame 4041 to slide through the rocker 4046 connected to the bottom of the turntable. The chassis 10 is provided with a slide rail that provides support for the sliding of multiple groups of rectangular frames 4041. The moving rectangular frame 4041 can drive the ring gear 4043 to rotate through the rack 4042. The ring gear 4043 is used to drive the rotating circle 402 connected to it to rotate with the rotating rod 401 as support. The rotating circle 402 can control the displacement of the cross sleeve 302 through the V-shaped part 403.

[0054] The integrated sealed primary and secondary fusion pole-mounted circuit breaker also includes lifting rings 15 welded at the four corners of the top of the chassis 10 to facilitate the transfer of working hoisting equipment. Both sides of the bottom of the chassis 10 are provided with outward-turned mounting plates 16, which can facilitate the assembly of the equipment to the grid positioning frame that needs to be erected. The circuit breaker also includes an external opening and closing knowledge structure.

[0055] The contents not described in detail in this specification belong to the prior art known to those skilled in the art.

[0056] Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. Integrated sealed primary and secondary fusion column mounted circuit breaker, characterized by: include: A chassis (10), wherein a circuit breaker body (11) for connecting to a power grid is fixedly mounted on the outside of the chassis (10), and a plurality of insulating pull rods (12) extending into the interior of the circuit breaker body (11) are slidably mounted up and down inside the chassis (10); A push-pull mechanism (20), wherein the push-pull mechanism (20) is rotatably mounted inside a plurality of brackets (13) fixedly mounted inside the chassis (10), and the top end of the push-pull mechanism (20) is fixedly connected to the bottom end of the insulating pull rod (12); A first elastic mechanism (30), two sets of first elastic mechanisms (30) connected to the push-pull mechanism (20) are symmetrically installed on both sides of the bracket (13), and a rotating member (40) for limiting the position of the first elastic mechanism (30) is provided on both sides of the bracket (13), and the rotating member (40) can help the push-pull mechanism (20) to complete the positioning through the first elastic mechanism (30) when the push-pull mechanism (20) moves to the end of the stroke; A second elastic mechanism (50) is installed inside the bracket (13) and is connected to the push-pull mechanism (20). When the push-pull mechanism (20) drives the insulating pull rod (12) to move to adjust the closing and opening states of the circuit breaker, the first elastic mechanism (30) and the second elastic mechanism (50) are linked to exchange between a free state and an energy storage state.

2. The integrated sealed primary and secondary fusion pole mounted circuit breaker according to claim 1, characterized in that: The push-pull mechanism (20) comprises two groups of symmetrical first connecting rods (201) inside a rotatable mounting bracket (13), a push rod (202) being fixedly mounted between the top ends of the two groups of first connecting rods (201), and a middle portion of the push rod (202) being connected to the bottom end of the insulating pull rod (12) via a rotatably mounted second connecting rod (203).

3. The integrated sealed primary and secondary fusion column mounted circuit breaker according to claim 2, characterized in that: The second elastic mechanism (50) comprises a bottom frame rod (501) fixedly mounted inside the bracket (13) and a top frame rod (502) fixedly mounted between two sets of first connecting rods (201), and a first spring (503) is mounted between the bottom frame rod (501) and the top frame rod (502).

4. The integrated sealed primary and secondary fusion column mounted circuit breaker according to claim 3, characterized in that: A plurality of groups of first springs (503) arranged in parallel are installed between the bottom frame rod (501) and the top frame rod (502), and a plurality of groups of parallel blocking pieces (14) are installed on the surfaces of the bottom frame rod (501) and the top frame rod (502), with the ends of the first springs (503) being installed between two adjacent groups of blocking pieces (14).

5. The integrated sealed primary and secondary fusion column mounted circuit breaker according to claim 2, characterized in that: The first elastic mechanism (30) includes a support seat (301) fixedly mounted on the side of the bracket (13); a circular ring (303) slidingly penetrating a cross sleeve (302) is fixedly mounted on the support seat (301); a second spring (304) sleeved on the outer ring of the circular ring (303) is mounted between the end of the cross sleeve (302) and the support seat (301); one end of the cross sleeve (302) is fixedly connected to the side of the first connecting rod (201), and the end of the cross sleeve (302) away from the first connecting rod (201) is in contact with the rotating member (40).

6. The integrated sealed primary and secondary fusion pole mounted circuit breaker according to claim 5, characterized in that: A second spring (304) sleeved on the outer ring of the circular ring (303) is installed between both ends of the cross sleeve (302) and both ends of the support seat (301).

7. The integrated sealed primary and secondary fused column mounted circuit breaker according to claim 5, characterized in that: The rotating member (40) comprises a rotating rod (401) rotatably connected to the side of the bracket (13); a rotating ring (402) is fixedly mounted on the rotating rod (401); and the rotating ring (402) is provided with retractable V-shaped members (403) at both ends for limiting the displacement of the cross sleeve (302). A driving member (404) for controlling the synchronous rotation of the rotating rings (402) on both sides is slidably mounted inside the chassis (10).

8. The integrated sealed primary and secondary fused column mounted circuit breaker according to claim 7, characterized in that: The V-shaped member (403) comprises two groups of support plates (4031) fixedly mounted on the rotating circle (402), and hydraulic rods (4032) are fixedly mounted on the inner sides of the two groups of support plates (4031), wherein the output end side surface of one group of the hydraulic rods (4032) abuts against the outer ring of the cross sleeve (302).

9. The integrated sealed primary and secondary fusion pole mounted circuit breaker according to claim 7, characterized in that: The driving member (404) comprises a rectangular frame (4041) slidably mounted inside the chassis (10); two sets of parallel racks (4042) are provided on the top of the rectangular frame (4041); the outer ring of the rotating ring (402) is provided with a gear ring (4043) meshing with the racks (4042); a servo motor (4044) is fixedly mounted on the bracket (13); a rotating disk (4045) is fixedly mounted on the output end rotating shaft of the servo motor (4044); and the bottom of the rotating disk (4045) is connected to the rectangular frame (4041) via a rotatably connected rocker (4046).

10. The integrated sealed primary and secondary fused pole mounted circuit breaker according to claim 1, characterized in that: Hanging rings (15) are welded at the four corners of the top of the chassis (10), and outward-turned mounting plates (16) are provided on both sides of the bottom of the chassis (10).

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