A combination tool for replacing circuit breakers in confined spaces

Abstract

This utility model belongs to the field of mechanical equipment technology, and in particular, it is a combination tool for replacing circuit breakers in confined spaces. It includes a cabinet with two slide rails fixedly connected to the inner wall of the top. This utility model consists of a support slide rail, a first hook, a telescopic beam, and a protective cover. Depending on the length and width of the cabinet, the support slide rail and telescopic beam are adjusted to suitable positions and fixed. Then, the center of the circuit breaker is located, and a manual hoist is hooked onto the first hook. After disconnecting the circuit breaker's power wiring, the protective cover is placed on the circuit breaker, and the circuit breaker is removed using the manual hoist. To reinstall the circuit breaker, it is placed inside the protective cover. The movable support slide rail is then adjusted to quickly locate the circuit breaker's base position, allowing for rapid reinstallation. This achieves safe and efficient disassembly and reinstallation of the circuit breaker in confined spaces, effectively solving the problems of operational difficulties, low efficiency, and safety hazards inherent in traditional replacement methods.

Description

Technical Field

[0001] This utility model relates to the field of mechanical equipment technology, specifically a combination tool for replacing circuit breakers in confined spaces. Background Technology

[0002] The safe and stable operation of electrical equipment is a key factor in ensuring production continuity and efficiency. Among these, the hot rolling main drive cabinet, as one of the core pieces of equipment, bears the important mission of providing stable power transmission and control for the hot rolling production process. Its reliability and maintainability directly affect the normal operation of the entire production line. During the design and planning stage, the hot rolling main drive cabinet was constrained by factors such as the overall layout and the installation location of surrounding equipment, resulting in a strictly limited space and a relatively small cabinet design. While meeting basic functional requirements, this small cabinet design brings many inconveniences and potential risks to subsequent equipment maintenance and component replacement. Among the many components of the hot rolling main drive cabinet, the design flaw of the excitation circuit breaker cabinet is particularly prominent. The entire excitation circuit breaker cabinet is only 600mm wide, yet it needs to accommodate multiple critical components within such a limited space. Specifically, it includes six 3*150 excitation input cables, which are responsible for transmitting the important excitation current and providing the necessary magnetic field energy for equipment operation; an excitation reactor, which regulates and stabilizes the current to ensure that the equipment operates under stable electrical parameters; an excitation circuit breaker, as a key protection and control component in the circuit, which can quickly disconnect the circuit in the event of a fault to protect the equipment and personnel; and some auxiliary components such as control contactors, which are used to realize the automated control and logic operation of the equipment. In addition, the excitation circuit breaker cabinet is located next to the excitation rectifier cabinet. This compact layout further reduces the operating space, making it extremely difficult for operators to perform equipment maintenance and component replacement inside the cabinet.

[0003] In actual production, excitation circuit breakers, as vulnerable components, require regular inspection and replacement. However, due to the limited space and compact component layout, securing the base of the excitation circuit breaker becomes extremely difficult. This is mainly because the space occupied by the excitation circuit breaker is too confined, and its own weight is considerable. During replacement work, one worker can only support the circuit breaker while another installs the base bolts. This method not only greatly increases the labor intensity of the workers, but also, during disassembly and installation, the circuit breaker's unstable center of gravity makes it prone to swaying or even falling, seriously threatening the personal safety of the workers and increasing the risk of secondary damage to the equipment. Therefore, we propose a combination tool for replacing circuit breakers in confined spaces to solve the above problems. Utility Model Content

[0004] (a) Technical problems to be solved

[0005] To address the shortcomings of existing technologies, this utility model provides a combination tool for replacing circuit breakers in confined spaces, thus solving the problems mentioned in the background section.

[0006] (II) Technical Solution

[0007] To achieve the above objectives, this utility model specifically adopts the following technical solution:

[0008] A combination tool for replacing circuit breakers in confined spaces includes a cabinet. Two slide rails are fixedly connected to the top inner wall of the cabinet. A telescopic beam is slidably connected to the two slide rails. A support slide is slidably connected to the telescopic beam. A first hook is provided at the bottom of the support slide. A manual hoist is provided on the first hook. A chain is provided on the manual hoist. A second hook is fixedly connected to the bottom of the chain. A protective cover is suspended from the second hook. The circuit breaker body is in movable contact with the protective cover. Two mounting blocks are on the front side of the protective cover. The mounting blocks are threadedly connected to the protective cover by fixing bolts.

[0009] Furthermore, the telescopic crossbeam includes a support beam, an adjusting beam, fastening bolts, and a connecting beam;

[0010] An adjusting beam is slidably connected to the support beam. The adjusting beam is threadedly connected to the support beam by fastening bolts. A connecting beam is welded to the end of both the support beam and the end of the adjusting beam.

[0011] Furthermore, a fixed beam is welded to the top of the connecting beam, and a roller is rotatably connected to one side of the fixed beam, with the roller slidably connected to the corresponding slide rail.

[0012] Furthermore, the protective cover includes a U-shaped frame, a partition plate, and a limiting plate;

[0013] A baffle plate is welded to the front side of the U-shaped frame, and limit plates are welded to the inner walls of both sides of the U-shaped frame. The limit plates are in active contact with the circuit breaker body.

[0014] Furthermore, two inclined plates are welded to the top of the loop frame, and a hanging ring is welded between the two inclined plates.

[0015] Furthermore, the hanging ring is engaged with the second hook.

[0016] (III) Beneficial Effects

[0017] Compared with the prior art, this utility model provides a combination tool for replacing circuit breakers in confined spaces, which has the following advantages:

[0018] This utility model utilizes a specialized tool consisting of a movable support slide, a first hook, a telescopic beam, and a protective cover. First, the support slide and telescopic beam are adjusted to suitable positions and fixed according to different cabinet lengths and widths. Then, the center of the circuit breaker is located, and a manual hoist is hooked onto the first hook. After disconnecting the circuit breaker's power wiring, the protective cover is placed on the circuit breaker, and the circuit breaker is removed using the manual hoist. When reinstalling the circuit breaker, it is placed inside the protective cover. The movable support slide is then adjusted to quickly locate the circuit breaker's base position, allowing for rapid reinstallation. This enables safe and efficient disassembly and reinstallation of the circuit breaker body in confined spaces, effectively solving the problems of operational difficulties, low efficiency, and safety hazards inherent in traditional replacement methods. Attached Figure Description

[0019] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0020] Figure 2 This is a partial three-dimensional structural diagram of the present invention;

[0021] Figure 3 This is a schematic diagram of the three-dimensional structure of the cabinet after it is concealed.

[0022] Figure 4 This is a three-dimensional structural diagram of the connection between the support beam, adjusting beam, connecting beam, and rollers of this utility model;

[0023] Figure 5 This is a schematic diagram of the three-dimensional structure of the connection between the herringbone frame, the limiting plate, the partition plate and the inclined plate of this utility model.

[0024] In the diagram: 1. Cabinet; 2. Slide rail; 3. Telescopic beam; 4. Support slide; 5. First hook; 6. Manual hoist; 7. Chain; 8. Second hook; 9. Hanging ring; 10. Protective cover; 11. Circuit breaker body; 12. Mounting block; 13. Fixing bolt; 14. Support beam; 15. Adjusting beam; 16. Fastening bolt; 17. Connecting beam; 18. Fixing beam; 19. Roller; 20. U-shaped frame; 21. Partition plate; 22. Limiting plate; 23. Inclined plate. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0026] Example

[0027] like Figure 1-5 As shown in the figure, an embodiment of the present invention provides a combination tool for replacing circuit breakers in confined spaces, including a cabinet 1. Two slide rails 2 are fixedly connected to the top inner wall of the cabinet 1. The same telescopic beam 3 is slidably connected to the two slide rails 2. A support slide rail 4 is slidably connected to the telescopic beam 3. A first hook 5 is provided at the bottom of the support slide rail 4. A manual hoist 6 is provided on the first hook 5. A chain 7 is provided on the manual hoist 6. A second hook 8 is fixedly connected to the bottom of the chain 7. A protective cover 10 is suspended on the second hook 8. The circuit breaker body 11 is in movable contact with the protective cover 10. There are two mounting blocks 12 on the front side of the protective cover 10. The mounting blocks 12 are threadedly connected to the protective cover 10 by fixing bolts 13.

[0028] In some embodiments, the telescopic beam 3 includes a support beam 14, an adjusting beam 15, a fastening bolt 16, and a connecting beam 17;

[0029] An adjusting beam 15 is slidably connected to the support beam 14. The adjusting beam 15 is threadedly connected to the support beam 14 by fastening bolts 16. A connecting beam 17 is welded to the end of both the support beam 14 and the end of the adjusting beam 15.

[0030] In some embodiments, a fixed beam 18 is welded to the top of the connecting beam 17, and a roller 19 is rotatably connected to one side of the fixed beam 18. The roller 19 is slidably connected to the corresponding slide rail 2, and the roller 19 serves to move the beam.

[0031] In some embodiments, the protective cover 10 includes a U-shaped frame 20, a partition plate 21, and a limiting plate 22;

[0032] A baffle plate 21 is welded to the front side of the U-shaped frame 20, and limit plates 22 are welded to the inner walls of both sides of the U-shaped frame 20. The limit plates 22 are in contact with the circuit breaker body 11.

[0033] In some embodiments, two inclined plates 23 are welded to the top of the loop frame 20, and a hanging ring 9 is welded between the two inclined plates 23. The hanging ring 9 is engaged with the second hook 8. The inclined plates 23 serve as a support.

[0034] The working principle or structural principle is as follows: During use, the operator adaptively adjusts the telescopic beam 3 according to the actual length and width dimensions of the target cabinet 1. The telescopic beam 3 achieves length adjustment through its unique telescopic structure. Specifically, by loosening the fastening bolt 16, the adjusting beam 15 is allowed to slide freely on the support beam 14 to the desired position. Then, the fastening bolt 16 is tightened to firmly fix the adjusting beam 15 to the support beam 14, thereby adjusting and fixing the entire tool set to a suitable position within the cabinet 1 space, providing stable support for subsequent operations. After the positions of the movable support slide 4 and the telescopic beam 3 are determined, The operator needs to locate the center of the circuit breaker body 11. The first hook 5 is connected to the telescopic beam 3, allowing for flexible rotation and fine-tuning at multiple angles. After fixing the hook, locate the center of the circuit breaker body 11 and place the protective cover 10 on it, ensuring that the circuit breaker body 11 makes contact with the limiting plate 22 inside the protective cover 10. This prevents the circuit breaker body 11 from shaking or shifting during lifting. Simultaneously, the mounting block 12 on the front of the protective cover 10 is threadedly connected to the main body of the protective cover 10 via fixing bolts 13, further reinforcing the connection between the protective cover 10 and the circuit breaker body 11, ensuring stability during lifting. During the lifting process, the protective cover 10 stably supports the circuit breaker body 11. The manual hoist 6 is hooked onto the first hook 5. The operator operates the manual hoist 6 to gradually tighten the chain 7, generating an upward pulling force, slowly lifting the circuit breaker body 11 along with the protective cover 10. During the lifting process, the movable support slide 4 and the telescopic beam 3 provide stable support for the entire lifting system, ensuring that the circuit breaker body 11 rises smoothly and avoiding damage to other components inside the cabinet due to swaying. As the manual hoist 6 continues to operate, after the circuit breaker body 11 is lifted to a certain height, the operator can... By moving the movable support slide 4 and adjusting the position of the telescopic beam 3, the circuit breaker body 11 can be smoothly moved out of the narrow cabinet 1 space, providing convenient operating space for subsequent maintenance or replacement work. When reinstalling the circuit breaker body 11, the circuit breaker body 11 is placed inside the protective cover 10, and then the movable support slide 4 is adjusted to quickly locate the bottom position of the circuit breaker body 11 and quickly reinstall the circuit breaker body 11. This achieves safe and efficient disassembly and reinstallation of the circuit breaker body 11 in a narrow space, effectively solving the problems of operational difficulties, low efficiency and safety hazards in traditional replacement methods.

[0035] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A combination tool for replacing a circuit breaker in a tight space, comprising a cabinet (1), characterized in that: Two slide rails (2) are fixedly connected to the top inner wall of the cabinet (1). The same telescopic beam (3) is slidably connected to the two slide rails (2). A support slide (4) is slidably connected to the telescopic beam (3). A first hook (5) is provided at the bottom of the support slide (4). A manual hoist (6) is provided on the first hook (5). A chain (7) is provided on the manual hoist (6). A second hook (8) is fixedly connected to the bottom of the chain (7). A protective cover (10) is suspended on the second hook (8). A circuit breaker body (11) is in contact with the protective cover (10). There are two mounting blocks (12) on the front side of the protective cover (10). The mounting blocks (12) are threadedly connected to the protective cover (10) by fixing bolts (13).

2. A combination tool for replacing a small space circuit breaker according to claim 1, characterized in that: The telescopic crossbeam (3) includes a support beam (14), an adjustment beam (15), fastening bolts (16), and a connecting beam (17); An adjusting beam (15) is slidably connected to the supporting beam (14). The adjusting beam (15) is threadedly connected to the supporting beam (14) by fastening bolts (16). A connecting beam (17) is welded to both the end of the supporting beam (14) and the end of the adjusting beam (15).

3. A combination tool for replacing a small space circuit breaker according to claim 2, wherein: A fixed beam (18) is welded to the top of the connecting beam (17), and a roller (19) is rotatably connected to one side of the fixed beam (18). The roller (19) is slidably connected to the corresponding slide rail (2).

4. A combination tool for replacing a small space circuit breaker according to claim 3, wherein: The protective cover (10) includes a U-shaped frame (20), a partition plate (21), and a limiting plate (22); A baffle plate (21) is welded to the front side of the loop frame (20), and limit plates (22) are welded to the inner walls of both sides of the loop frame (20). The limit plates (22) are in active contact with the circuit breaker body (11).

5. A combination tool for replacing a small space circuit breaker according to claim 4, wherein: Two inclined plates (23) are welded to the top of the loop frame (20), and a hanging ring (9) is welded between the two inclined plates (23).

6. A combination tool for replacing a small space circuit breaker according to claim 5, wherein: The hanging ring (9) is engaged with the second hook (8).

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