Primary and secondary fusion complete column-mounted circuit breaker

Abstract

The utility model discloses a primary and secondary fusion complete column-mounted circuit breaker, which comprises a bottom plate, a circuit breaker main body, a protective shell and two lifting mechanisms, each lifting mechanism is composed of two execution units, each execution unit comprises a rack and a gear motor, a gear is fixedly mounted at the output end of each gear motor, and the gear is connected with the corresponding rack. The utility model relates to the technical field of power equipment. According to the primary and secondary fusion complete column-mounted circuit breaker, through arrangement of the lifting mechanism, flexible lifting opening and closing of the protective shell can be realized, the limitation of a single-side operation surface of a traditional opening and closing cabinet structure is broken, a wider and more convenient operation space is provided for maintainers, the maintenance efficiency is greatly improved, and compared with a completely detachable mechanism, the primary and secondary fusion complete column-mounted circuit breaker is more convenient to maintain. The lifted protective shell can still provide shielding protection for the circuit breaker body arranged below the protective shell, the environmental adaptability is enhanced, in addition, by means of the execution unit, the operation of multiple independent fastening points does not need to be executed through opening and closing of the protective shell, and the operation convenience is remarkably improved.

Description

Technical Field

[0001] The utility model relates to the technical field of electric power equipment, in particular to a primary-secondary integrated set of pole-mounted circuit breakers. Background Art

[0002] Circuit breakers in current power systems are usually equipped with protective shells to protect internal core components from physical damage and environmental corrosion. Their structural design needs to take into account both operational convenience and environmental adaptability. Currently, the mainstream solutions for circuit breaker protective shells are divided into two categories: one is an open and close cabinet structure with an operating window formed by a single-sided hinged door panel, and internal integration of modules such as the circuit breaker body, terminal blocks, and trip devices. This design focuses on space utilization and is suitable for fixed scenes such as distribution rooms. The other is a fully detachable structure with modular panels fixed by bolts or clips, supporting all-round disassembly to access internal components, which is commonly seen in distribution equipment that requires frequent debugging.

[0003] In the process of implementing the present invention, the inventors found that there are at least the following problems in the prior art:

[0004] The structure of the opening and closing cabinet only retains a single-side operating surface, which leads to spatial constraints on maintenance operations. When dealing with complex problems such as circuit breaker contact erosion and secondary circuit failure, technicians need to complete the disassembly and inspection of multi-level components through a single window. The tool operation angle is limited, and it is difficult to visually observe the adjacent phase sequence wiring status, which reduces operating efficiency. Although the fully detachable structure enhances accessibility, it is easily affected by the environment during maintenance. Corrosive media are easily infiltrated in salt spray, rain and snow, causing the risk of insulation failure. In addition, the disassembly and assembly process of the fully detachable structure requires the operation of many independent fastening points, and the disassembly and assembly process is very cumbersome.

[0005] Therefore, the above technical problems need to be solved. Utility Model Content

[0006] In order to overcome the deficiencies of the prior art, the utility model proposes a primary-secondary integrated pole-mounted circuit breaker, which solves the problems raised in the above-mentioned background technology.

[0007] In order to solve the above technical problems, the basic technical solution proposed by the utility model is:

[0008] The primary and secondary integrated column mounted circuit breaker comprises a bottom plate, a circuit breaker body centrally mounted on the middle of the top surface of the bottom plate, a protective shell with a movable cover arranged outside the circuit breaker body, and two lifting mechanisms arranged symmetrically in front and rear for opening and closing the protective shell.

[0009] The lifting mechanism is composed of two execution units which are symmetrically distributed on the left and right. The execution unit includes a rack vertically fixed on the base plate and a reduction motor fixed to the bottom of the side wall of the protective shell through a bracket. The output end of the reduction motor is fixedly mounted with a gear which meshes with the rack.

[0010] Preferably, two connecting frames are symmetrically arranged between the two execution units, and the two ends of the connecting frame are respectively vertically fixedly connected to the ends of the two racks. The main function of the connecting frame is to strengthen the structural support between the two execution units and ensure the stability of the rack fixing.

[0011] Preferably, the outer wall of the protective shell is provided with a plurality of convex structures distributed in a rectangular array. The convex structures help to enhance the structural strength of the protective shell, so that it can disperse pressure and improve the pressure resistance of the protective shell. At the same time, the convex structures can also increase the heat dissipation area on the surface of the protective shell, promote heat dissipation, and reduce the temperature inside the protective shell.

[0012] Preferably, fan modules arranged at equal heights are embedded on the left and right side walls of the protective shell, window structures are provided on the front and rear side walls of the protective shell, and dust screens are installed on the outside of the two window structures. The two fan modules arranged opposite to each other mainly function to enhance internal air circulation and reduce the temperature of the circuit breaker during operation, and the dust screen is usually made of a mesh material with a certain aperture, the aperture size of which can block dust particles from passing through while allowing air circulation. When the fan module is working, external air will enter the interior of the protective shell through the dust screen, and dust particles will be intercepted by the dust screen on the outside, thereby ensuring the cleanliness of the interior of the protective shell.

[0013] Preferably, the left and right sides of the top of the protective shell are provided with slope structures inclined outward, and the bottoms of the two slope structures are provided with baffles extending outward along the horizontal plane. The main functions of the slope structure and the baffle are to prevent rainwater from entering the interior of the protective shell, further enhancing the waterproof performance of the protective shell. When encountering rainy weather, the slope structure can make rainwater slide down quickly to avoid rainwater accumulation on the top of the protective shell. At the same time, the baffle can form a shielding barrier above the two reduction motors located on the same side of the protective shell.

[0014] The beneficial effects of the utility model are:

[0015] The technical solution of the utility model can realize the flexible lifting and opening and closing of the protective shell by providing a lifting mechanism, breaking the limitation of the single-sided operating surface of the traditional opening and closing cabinet structure, providing maintenance personnel with a more spacious and convenient operating space, and greatly improving the maintenance efficiency. At the same time, compared with the completely detachable mechanism, the raised protective shell can still provide shielding and protection for the circuit breaker body placed thereunder, thereby enhancing the environmental adaptability. In addition, with the aid of the execution unit, the opening and closing of the protective shell does not require the operation of a large number of independent fastening points, which significantly improves the convenience of operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural schematic diagram of the first working state of the utility model;

[0017] Figure 2 It is a structural schematic diagram of the second working state of the utility model;

[0018] Figure 3 This is a structural schematic diagram of the lifting mechanism of the utility model;

[0019] Figure 4 This is a schematic diagram of the structure of the protective shell of the utility model;

[0020] Description of reference numerals:

[0021] 100, bottom plate;

[0022] 200. Circuit breaker body;

[0023] 300, protective shell;

[0024] 310, raised structure; 320, fan module; 330, dust screen; 340, slope structure; 350, baffle;

[0025] 400, lifting mechanism;

[0026] 410, execution unit; 420, connection frame;

[0027] 4110, rack; 4120, bracket; 4130, reduction motor; 4140, gear. DETAILED DESCRIPTION

[0028] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0029] See also Figure 1-4The utility model provides a technical solution: a primary and secondary integrated pole-mounted circuit breaker, comprising a base plate 100, a circuit breaker body 200 centrally mounted on the middle of the top surface of the base plate 100, a protective shell 300 with a movable cover arranged outside the circuit breaker body 200, and two lifting mechanisms 400 symmetrically arranged front and rear for opening and closing the protective shell 300, the lifting mechanism 400 is composed of two execution units 410 symmetrically distributed left and right, the execution unit 410 includes a rack 4110 vertically fixedly mounted on the base plate 100 and a reduction motor 4130 fixedly mounted on the bottom of the side wall of the protective shell 300 through a bracket 4120, and a gear 4140 meshing with the rack 4110 is fixedly mounted on the output end of the reduction motor 4130.

[0030] Based on the above-mentioned structural setting, the primary and secondary integrated pole-mounted circuit breaker is composed of a base plate 100, a circuit breaker body 200, a protective shell 300 and two lifting mechanisms 400, wherein the base plate 100 is the supporting foundation of the entire primary and secondary integrated pole-mounted circuit breaker, providing a stable installation platform for other components, and is used to carry the circuit breaker body 200, the protective shell 300 and the lifting mechanism 400, ensuring that the entire device remains stable during operation. During the installation process, the base plate 100 will be fixed in a suitable position, such as on a utility pole, to provide reliable support for the entire circuit breaker device. The circuit breaker body 200 is the core component of the device, and bears the important responsibility of controlling and protecting the circuit. It can adjust the circuit according to the current, When the voltage and other parameters change, the circuit is automatically cut off or connected to prevent the occurrence of circuit overload, short circuit and other faults, so as to ensure the safe and stable operation of the power system. The main function of the protective shell 300 is to provide external protection for the circuit breaker body 200 to protect it from physical damage and environmental erosion. It can prevent dust, moisture, rainwater and the like from entering the inside of the circuit breaker to avoid the impact of these impurities on the performance of the circuit breaker. At the same time, the protective shell 300 can also play a certain safety isolation role to prevent personnel from accidentally contacting the live parts inside the circuit breaker. The protective shell 300 can be movable and covered outside the circuit breaker body 200. Its opening and closing is controlled by the lifting mechanism 400. During normal operation, the protective shell 300 is in a closed state, which is the first working state. Figure 1 As shown, at this time, the protective shell 300 provides all-round protection for the circuit breaker body 200. When inspection or maintenance is required, the lifting mechanism 400 will drive the protective shell 300 to rise or fall to realize the opening and closing operation, which is the second working state. Figure 2As shown, it is convenient for technicians to inspect and repair the circuit breaker body 200, and the lifting mechanism 400 is a key component for realizing the opening and closing of the protective shell 300. It is composed of two execution units 410 arranged symmetrically on the left and right, which can provide power for the lifting and lowering of the protective shell 300. Through the operation of the lifting mechanism 400, the limitation of the single-sided operating surface of the traditional opening and closing cabinet structure is broken, and a more spacious and convenient operating space is provided for maintenance personnel. In the execution unit 410, when the reduction motor 4130 is started, it drives the gear 4140 to rotate. Since the gear 4140 is meshed with the rack 4110, the gear 4 The rotation of the rack 4110 is converted into a linear motion of the rack 4110, thereby pushing the protective shell 300 up or down. The two execution units 410 work synchronously to ensure that the protective shell 300 can be opened and closed smoothly and reliably. Specifically, during the working process, the protective shell 300 is first in a closed state, which is the first working state. At this time, the protective shell 300 covers the top of the bottom plate 100 and forms a space for the circuit breaker body 200 to be accommodated. The protective shell 300 provides all-round protection for the circuit breaker body 200. When inspection or maintenance is required, the four reduction motors 4130 are started. At each execution unit 4 10, the reduction motor 4130 drives the gear 4140 to rotate, and the gear 4140 meshes with the rack 4110, converting the rotation of the gear 4140 into the linear motion of the rack 4110, so that under the action of the four execution units 410, the protective shell 300 rises, and the opening and closing operation of the protective shell 300 can be realized. At this time, it is the second working state, and the operator can perform maintenance on the circuit breaker body 200 in the exposed space under the protective shell 300. After the maintenance is completed, the two lifting mechanisms 400 drive the protective shell 300 to descend, restore the closed state, and continue to provide protection for the circuit breaker body 200. The primary and secondary integrated pole-mounted circuit breaker is provided with a lifting mechanism 400, which can realize the flexible lifting and opening and closing of the protective shell 300, breaking the limitation of the single-side operating surface of the traditional opening and closing cabinet structure, providing maintenance personnel with a more spacious and convenient operating space, and greatly improving the maintenance efficiency. At the same time, compared with the completely detachable mechanism, the raised protective shell 300 can still provide shielding and protection for the circuit breaker body 200 placed thereunder, thereby enhancing the environmental adaptability. In addition, with the aid of the execution unit 410, the opening and closing of the protective shell 300 does not require the operation of a large number of independent fastening points, which significantly improves the convenience of operation.

[0031] It should be noted that the circuit breaker body 200 in the present invention is integrated with existing mature technologies, and its specific structure and working principle are not the innovations of the present invention, so they are not shown in the accompanying drawings. The protection scope of the present invention is only for the protection-related structural features clearly defined in the claims.

[0032] Furthermore, it also includes two connecting frames 420 symmetrically distributed in the upper and lower parts and erected between the two execution units 410 , and two ends of the connecting frame 420 are respectively vertically fixedly connected to the ends of the two racks 4110 .

[0033] Furthermore, a plurality of protrusion structures 310 distributed in a rectangular array are provided on the outer wall of the protective shell 300 .

[0034] Furthermore, fan modules 320 arranged at the same height are embedded on the left and right side walls of the protective shell 300, window structures are opened on the front and rear side walls of the protective shell 300, and the outsides of the two window structures are covered with dustproof nets 330.

[0035] Furthermore, slope structures 340 inclined outward are provided on the left and right sides of the top of the protective shell 300, and baffles 350 extending outward along a horizontal plane are provided at the bottom of the two slope structures 340.

[0036] According to the disclosure and teaching of the above description, the technical personnel in the field to which the utility model belongs can also change and modify the above implementation. Therefore, the utility model is not limited to the specific implementation methods disclosed and described above, and some modifications and changes to the utility model should also fall within the scope of protection of the claims of the utility model. In addition, although some specific terms are used in this specification, these terms are only for the convenience of description and do not constitute any limitation to the utility model.

Claims

1. A complete set of primary and secondary integrated pole mounted circuit breakers, characterized by: It comprises a base plate (100), a circuit breaker body (200) centrally mounted on the middle of the top surface of the base plate (100), a protective shell (300) with a movable cover arranged outside the circuit breaker body (200), and two lifting mechanisms (400) arranged symmetrically in front and rear for opening and closing the protective shell (300); The lifting mechanism (400) is composed of two actuator units (410) symmetrically distributed on the left and right, the actuator unit (410) comprising a rack (4110) vertically fixedly mounted on the bottom plate (100) and a reduction motor (4130) fixedly mounted on the bottom of the side wall of the protective shell (300) via a bracket (4120), and a gear (4140) meshing with the rack (4110) is fixedly mounted on the output end of the reduction motor (4130).

2. The primary and secondary integrated pole mounted circuit breaker according to claim 1, characterized in that: It also includes two connecting frames (420) which are symmetrically distributed in the upper and lower parts and are erected between the two execution units (410), and the two ends of the connecting frames (420) are respectively vertically fixedly connected to the ends of the two racks (4110).

3. The primary and secondary integrated pole mounted circuit breaker according to claim 1, characterized in that: The outer wall of the protective shell (300) is provided with a plurality of protruding structures (310) distributed in a rectangular array.

4. The primary and secondary integrated pole mounted circuit breaker according to claim 1, characterized in that: The left and right side walls of the protective shell (300) are both embedded with fan modules (320) arranged at the same height, the front and rear side walls of the protective shell (300) are both provided with window structures, and the exteriors of the two window structures are both covered with dustproof nets (330).

5. The primary and secondary integrated pole mounted circuit breaker according to claim 1, characterized in that: The left and right sides of the top of the protective shell (300) are both provided with slope structures (340) that are inclined outwards, and the bottoms of the two slope structures (340) are both provided with baffles (350) that extend outwards along a horizontal plane.

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