Test tool for power supply frame circuit breaker

Abstract

The utility model provides a test tool for a power supply frame circuit breaker, which comprises a base, one end of the base is provided with a bearing seat for bearing the frame circuit breaker, the other end of the base is provided with an equipment mounting rack, the bearing seat is horizontally and slidably mounted on the base, and the base is provided with a protective cover for shielding the base at a position corresponding to the upper part of the bearing seat. The protection cover is provided with a positioning assembly used for positioning the frame circuit breaker. The equipment mounting rack is provided with a power supply mechanism used for supplying power to the frame circuit breaker, a control mechanism used for controlling the frame circuit breaker to work, and a display mechanism used for displaying the working state of the frame circuit breaker. The test tool for the power supply frame circuit breaker has the advantages of being simple in structure and easy to operate and use, can be suitable for maintenance and training of the frame circuit breaker, is simple and convenient to disassemble and assemble the frame circuit breaker, and is beneficial to improving the maintenance and training efficiency of the frame circuit breaker.

Description

TECHNICAL FIELD

[0001] The utility model belongs to electrical equipment operation and maintenance technical field, especially is involved in a kind of test tool for power supply frame circuit breaker. BACKGROUND

[0002] Frame circuit breaker is a kind of mechanical switch electrical appliance that can be connected, carried and broken under normal circuit conditions, and can be connected, carried for a certain time and broken under specified abnormal circuit conditions, its main purpose is to prevent the fault caused by overload and short circuit in circuit. Among them, frame circuit breaker generally has a steel frame, all parts are installed in the frame, its capacity is larger, can be installed with a variety of functions of trip and more auxiliary contacts, has higher segmentation capacity and thermal stability, so it is often used in places requiring high breaking capacity and selective protection, frame circuit breaker is often used in existing subway equipment to protect circuit, but due to the high safety and timeliness requirements of subway operation, the window period of practical operation training of operation and maintenance personnel on subway line is short, so when maintaining or training circuit breaker, test tool is often used, the existing test tool still has the problem of inconvenient loading and unloading when using and training frame circuit breaker, which increases the difficulty of maintenance and training of frame circuit breaker. SUMMARY

[0003] Therefore, the utility model aims at providing a kind of test tool for power supply frame circuit breaker to solve the problem of inconvenient loading and unloading of existing frame circuit breaker test tool when using and training frame circuit breaker.

[0004] To achieve the above-mentioned purpose, the technical scheme of the utility model is as follows:

[0005] A kind of test tool for power supply frame circuit breaker, including base, the base one end is equipped with the bearing seat for bearing frame circuit breaker, the other end is equipped with equipment mounting rack, the bearing seat is horizontally slidingly installed on base, the base is equipped with the protective cover for shielding base in position corresponding to the position above bearing seat, the protective cover is equipped with the positioning assembly for positioning frame circuit breaker;The equipment mounting rack is equipped with the power supply mechanism for powering frame circuit breaker, control mechanism for controlling the work of frame circuit breaker and display mechanism for showing the working state of frame circuit breaker.

[0006] Further, the positioning assembly includes lifting column provided on the protective cover, the lifting column is provided with positioning piece at the end extending into the protective cover, and the positioning piece is provided with buffer antiskid pad.

[0007] Further, the lifting column adopts ball screw lifter.

[0008] Furthermore, the support base is provided with a limiting plate for cooperating with the inner wall of the protective cover to limit the circuit breaker of the frame. The limiting plate is slidably installed on the support base, and a baffle plate is provided at one end of the limiting plate that extends out of the protective cover.

[0009] Furthermore, the baffle is mounted on the support seat by fixing bolts. The baffle has a strip hole that mates with the fixing bolts. The length direction of the strip hole is the same as the sliding direction of the baffle. The baffle and the limiting plate are connected by a reinforcing member.

[0010] Furthermore, the support base is provided with rollers below it, and at least four rollers are evenly arranged around the support base. Each roller is rotatably mounted on the support base, and the base is provided with guide grooves that cooperate with the rollers.

[0011] Furthermore, the power supply mechanism includes a control power supply, an air switch, and a fuse connected in sequence.

[0012] Furthermore, the control mechanism includes a closing button and a closing button, both of which are connected at one end to the frame circuit breaker and at the other end to the power supply mechanism.

[0013] Furthermore, the display mechanism includes an energy storage indicator light, a trip indicator light, a closing indicator light, a test position indicator light, and a working position indicator light, all connected to the frame circuit breaker.

[0014] Furthermore, the equipment mounting frame is also equipped with wiring terminals, and the power supply mechanism, control mechanism and display mechanism are all connected to the frame circuit breaker through the wiring terminals.

[0015] Compared with the prior art, the test fixture for a power supply frame circuit breaker described in this utility model has the following advantages:

[0016] The test fixture for power supply frame circuit breakers described in this utility model has the advantages of simple structure, easy operation and use. It can be applied to the maintenance and training of frame circuit breakers, and the disassembly and assembly of frame circuit breakers is simple, which helps to improve the maintenance and training efficiency of frame circuit breakers. Attached Figure Description

[0017] The accompanying drawings, which form part of this utility model, are used to provide a further understanding of the utility model. The illustrative embodiments of the utility model and their descriptions are used to explain the utility model and do not constitute an undue limitation of the utility model. In the drawings:

[0018] Figure 1 This is a schematic diagram of the structure of a test fixture for a power supply frame circuit breaker according to an embodiment of the present utility model;

[0019] Figure 2This is a schematic diagram of the structure of the bearing seat and the base mating part in a test fixture for a power supply frame circuit breaker according to an embodiment of this utility model;

[0020] Figure 3 This is a schematic diagram of the connection between the limiting plate and the shielding plate in a test fixture for a power supply frame circuit breaker according to an embodiment of this utility model;

[0021] Figure 4 This is a schematic diagram of the positioning component in a test fixture for a power supply frame circuit breaker according to an embodiment of the present invention;

[0022] Figure 5 This is a control principle diagram of a test fixture for a power supply frame circuit breaker according to an embodiment of the present utility model;

[0023] Figure 6 This is a circuit diagram of the closing button and the opening button in a test fixture for a power supply frame circuit breaker according to an embodiment of the present utility model;

[0024] Figure 7 This is a circuit diagram of the wiring terminals in a test fixture for a power supply frame circuit breaker according to an embodiment of the present invention.

[0025] Explanation of reference numerals in the attached figures:

[0026] 1. Base; 2. Equipment mounting bracket; 3. Protective cover; 4. Lifting column; 5. Limit plate; 6. Bearing seat; 7. Baffle plate; 8. Fixing bolt; 9. Strip hole; 10. Wiring terminal; 11. Opening indicator light; 12. Closing indicator light; 13. Energy storage indicator light; 14. Test position indicator light; 15. Working position indicator light; 16. Closing button; 17. Opening button; 18. Control power supply; 19. Air switch; 20. Fuse; 21. Roller; 22. Guide groove; 23. Angled part; 24. Reinforcing member; 25. Positioning member; 26. Buffer anti-slip pad. Detailed Implementation

[0027] It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments of the present invention can be combined with each other.

[0028] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, features defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0029] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0030] The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0031] A test fixture for a power supply frame circuit breaker, such as Figures 1 to 4 As shown, the device includes a base 1, one end of which is provided with a support seat 6 for supporting the frame circuit breaker, and the other end is provided with an equipment mounting bracket 2. The support seat 6 is horizontally slidably mounted on the base 1. A protective cover 3 is provided on the base 1 above the support seat 6 to cover the base 1. The protective cover 3 is provided with a positioning component for positioning the frame circuit breaker. The equipment mounting bracket 2 is provided with a power supply mechanism for supplying power to the frame circuit breaker, a control mechanism for controlling the operation of the frame circuit breaker, and a display mechanism for displaying the operating status of the frame circuit breaker.

[0032] For example, the protective cover 3 is an inverted U-shaped structure. The protective cover 3 can be fixed to the equipment mounting bracket 2, and its left and right sides can also be fixed to the base 1 with screws. This further improves the structural strength of the protective cover 3, enabling it to better protect the frame circuit breaker on the support 6 and prevent damage to the frame circuit breaker from falling tools during training. In addition, the protective cover 3 can also be equipped with a storage box for holding tools or training manuals, allowing trainees to easily access them as needed.

[0033] In practical applications, the equipment mounting bracket 2 is fixed to the base 1. The equipment mounting bracket 2 can adopt a perforated plate or grid plate structure to facilitate the installation of components such as rails, relays, wire sheaths, and terminals 10. Those skilled in the art can also provide threaded holes or other structures on the equipment mounting bracket 2 as needed to facilitate subsequent equipment installation; this will not be elaborated upon here. Furthermore, the equipment mounting bracket 2 can also be provided with wiring holes to facilitate the wiring of the frame circuit breaker.

[0034] Preferably, the positioning component includes a lifting column 4 mounted on the protective cover 3. One end of the lifting column 4 extending into the protective cover 3 is provided with a positioning element 25, and the positioning element 25 is provided with a buffer anti-slip pad 26. For example, the lifting column 4 is a ball screw jack. The fixed end of the lifting column 4 can be fixed to the protective cover 3 with bolts, and the telescopic end can be connected to the positioning element 25 with bolts. The buffer anti-slip pad 26 can be made of rubber and can be fixed to the positioning element 25 with adhesive.

[0035] In practical applications, to facilitate the assembly of the frame circuit breaker by rotating the handle, trainees can first use the lifting column 4 to lower the positioning component 25, and then use the buffer anti-slip pad 26 on the positioning component 25 to press down on the top surface of the frame circuit breaker, thus limiting and fixing the frame circuit breaker. Afterwards, trainees can use the control mechanism to inspect and train on the frame circuit breaker. Once the inspection or training is complete, the operator can use the lifting column 4 to raise the positioning component 25, releasing the frame circuit breaker from its fixed position. Then, the operator can manually move the support base 6, allowing it to move out of the protective cover 3, thus easily removing the frame circuit breaker and reducing the assembly difficulty of the frame circuit breaker on the support base 6.

[0036] Preferably, the support base 6 is provided with a limiting plate 5 for cooperating with the inner wall of the protective cover 3 to limit the movement of the circuit breaker frame. The limiting plate 5 is slidably mounted on the support base 6, and a baffle plate 7 is provided at one end of the limiting plate 5 extending out of the protective cover 3. For example, the baffle plate 7 is mounted on the support base 6 by fixing bolts 8. The baffle plate 7 is provided with a strip hole 9 that mates with the fixing bolts 8. The length direction of the strip hole 9 is the same as the sliding direction of the baffle plate. The baffle plate 7 and the limiting plate 5 are connected by a reinforcing member 24.

[0037] By setting a vertically positioned limiting plate 5 on the bearing seat 6, and by sliding and adjusting the limiting plate 5, the limiting plate 5 can cooperate with the inner wall on one side of the protective cover 3 to limit the frame circuit breaker. In conjunction with the positioning part 25 to press and limit the frame circuit breaker, the stability of the frame circuit breaker can be further improved, and it is convenient for trainees to use the handle to assemble and train the frame circuit breaker.

[0038] In practical applications, the baffle plate 7 is fixed to the limiting plate 5, and one end of the reinforcing member 24 is fixed to the baffle plate 7, while the other end is fixed to the limiting plate 5. The reinforcing member 24 can improve the structural strength at the connection between the baffle plate 7 and the limiting plate 5. By setting the baffle plate 7, when the bearing seat 6 moves the frame circuit breaker into the protective cover 3, the baffle plate 7 can effectively block the opening of the protective cover 3, preventing foreign objects from entering the protective cover 3. It can also provide good protection for the wires and other structures on the bearing seat 6 during training, which helps to improve the safety of this testing fixture during use.

[0039] Preferably, rollers 21 are provided below the support base 6, and at least four rollers 21 are evenly distributed around the support base 6. Each roller 21 is rotatably mounted on the support base 6, and the base 1 is provided with guide grooves 22 that cooperate with the rollers 21. For example, four rollers 21 are evenly distributed at the four corners of the support base 6, and a wheel frame for mounting the rollers 21 is fixed on the support base 6. Two guide grooves 22 are provided, and each guide groove 22 has an inclined surface 23 at the end opposite to the equipment mounting frame 2 to facilitate the removal of the rollers 21.

[0040] In practical applications, the end of the support seat 6 extending from the base 1 is equipped with a roller 21 to support the support seat 6, facilitating convenient and stable movement of the support seat 6 by the trainee. When the trainee moves the support seat 6, the roller 21 extending into the base 1 can be blocked by the inner wall of the guide groove 22, thus preventing the trainee from accidentally pulling the support seat 6 out quickly. If the trainee wants to disassemble the support seat 6 later, the operator can manually lift the support seat 6 and then move the roller 21 out of the guide groove 22 along the inclined surface 23.

[0041] Figure 5This is a control principle diagram of a test fixture for a power supply frame circuit breaker according to an embodiment of the present utility model. Figure 6 This is a circuit diagram of the closing and opening buttons in a test fixture for a power supply frame circuit breaker according to an embodiment of the present invention. Figure 7 This is a circuit diagram of the wiring terminals in a test fixture for a power supply frame circuit breaker according to an embodiment of the present invention.

[0042] like Figures 1 to 7 As shown, the power supply mechanism includes a control power supply 18, an air switch 19, and a fuse 20 connected in sequence. The control mechanism includes a closing button 16 and a opening button 17, each connected at one end to the frame circuit breaker and at the other end to the power supply mechanism. The display mechanism includes an energy storage indicator light 13, an opening indicator light 11, a closing indicator light 12, a test position indicator light 14, and a working position indicator light 15, all connected to the frame circuit breaker. The equipment mounting frame 2 is also equipped with a terminal block 10, through which the power supply mechanism, control mechanism, and display mechanism are all connected to the frame circuit breaker.

[0043] Specifically, in the circuit diagram, the control power supply is represented by 1D:1 and 1D:2. The air switch is represented by ZK1. The fuse is represented by 1FU1 and 1FU2. The closing button is represented by 1SBS. The opening button is represented by 1SBF. Both the closing and opening buttons are connected to the frame circuit breaker via the closing relay KA1. The energy storage indicator is represented by 1HW. The opening indicator is represented by 1HG. The closing indicator is represented by 1HR. The test position indicator is represented by 1HY1. The working position indicator is represented by 1HY2.

[0044] In practical applications, trainees can simulate closing and opening operations by operating the closing and opening buttons, and conduct assembly simulation training for the frame circuit breaker based on the corresponding operations. Furthermore, trainees can also use this testing fixture to perform wiring operations according to actual training needs. The main innovation of this invention lies in the structural design of the testing fixture; the circuit part can be adjusted and simulated according to the actual usage scenario of the frame circuit breaker, therefore, it will not be elaborated upon here.

[0045] This power supply frame circuit breaker testing fixture was developed to solve the maintenance and testing challenges of 400V frame circuit breakers for subway power supply. The fixture enables functions such as opening and closing control of the 400V frame circuit breaker, energy storage, interlocking, and position signal feedback display. Using this fixture, frequent switching and impacts on station power lighting loads during maintenance and testing can be avoided, and it can also be used for on-site personnel skill enhancement training.

[0046] Through the independent design, drawing, component selection, construction wiring, and functional testing by power supply engineers, the entire process is executed autonomously. This enables functions such as opening and closing control of offline 400V frame circuit breakers, energy storage, and interlocking and position signal feedback display. It provides a practical platform for improving the operational skills of on-site personnel by simulating fault points and interlocking points, thereby enhancing their troubleshooting and maintenance capabilities. This lays the foundation for the subsequent development of a systematic and standardized practical training system for power equipment.

[0047] This tooling can be used to train hundreds of frontline personnel annually in the maintenance and repair of frame circuit breakers, reducing downstream equipment losses by hundreds of thousands of yuan. It enhances the troubleshooting and maintenance capabilities of technicians, providing a practical platform for personnel training and skills competitions. It also reduces the frequent switching and impact on station power lighting loads caused by functional testing during circuit breaker fault repairs in subway stations.

[0048] The successful development and application of this power supply frame circuit breaker testing fixture not only improves the safety and reliability of the power supply system, but also provides a platform for young employees to practice and innovate, promoting talent cultivation and technology transfer. In the future, this project is expected to be applied and promoted in a wider range of fields, making a greater contribution to technological advancement and talent development in the rail transit industry.

[0049] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A test tool for a power frame circuit breaker, characterized by: The utility model provides a frame circuit breaker device, including base (1), one end of base (1) is equipped with the carrier seat (6) for bearing frame circuit breaker, the other end is equipped with equipment mounting frame (2), carrier seat (6) horizontal sliding installation is arranged on base (1), the position of base (1) corresponding carrier seat (6) top is equipped with the protective cover (3) for shielding base (1), the protective cover (3) is equipped with the positioning assembly for positioning frame circuit breaker, equipment mounting frame (2) is equipped with the power supply mechanism for the power supply of frame circuit breaker, the control mechanism for controlling frame circuit breaker work and the display mechanism for showing frame circuit breaker working state.

2. A test tool for a power frame circuit breaker according to claim 1, characterized in that: The positioning assembly includes a lifting column (4) provided on the protective cover (3), one end of the lifting column (4) extending into the protective cover (3) is provided with a positioning piece (25), and the positioning piece (25) is provided with a buffer anti-skid pad (26).

3. A test tool for a power frame circuit breaker according to claim 2, characterized in that: The lifting column (4) is a ball screw lifter.

4. The test tool for a power frame circuit breaker of claim 1, wherein: The carrier seat (6) is provided with a limiting plate (5) for limiting frame circuit breaker in cooperation with the inner wall of the protective cover (3), the limiting plate (5) is slidingly installed on the carrier seat (6), and one end of the limiting plate (5) extending out of the protective cover (3) is provided with a shielding plate (7).

5. A test tool for a power frame circuit breaker according to claim 4, characterized in that: The shielding plate (7) is installed on the carrier seat (6) by a fixing bolt (8), the shielding plate (7) is provided with a strip-shaped hole (9) matched with the fixing bolt (8), the length direction of the strip-shaped hole (9) is the same as the sliding direction of the shielding plate, and the shielding plate (7) and the limiting plate (5) are connected by a reinforcing piece (24).

6. A test tool for a power frame circuit breaker according to claim 1, characterized in that: The carrier seat (6) is provided with a plurality of rollers (21) below, the rollers (21) are evenly arranged at least four around the carrier seat (6), each roller (21) is rotatably installed on the carrier seat (6), and the base (1) is provided with a guide groove (22) matched with the rollers (21).

7. A test tool for a power frame circuit breaker according to claim 1, characterized in that: The power supply mechanism includes a control power supply (18), an air switch (19) and a fuse (20) connected in sequence.

8. A test tool for a power frame circuit breaker according to claim 1, characterized in that: The control mechanism includes a closing button (16) and an opening button (17), one end of the closing button (16) and the opening button (17) is connected with the frame circuit breaker, and the other end is connected with the power supply mechanism.

9. A test tool for a power frame circuit breaker according to claim 1, characterized in that: The display mechanism includes an energy storage indicator (13), an opening indicator (11), a closing indicator (12), a test position indicator (14) and a working position indicator (15) connected with the frame circuit breaker.

10. A test tool for a power frame circuit breaker according to any one of claims 7-9, characterized in that: The equipment mounting frame (2) is further provided with a wiring terminal (10), and the power supply mechanism, the control mechanism and the display mechanism are connected with the frame circuit breaker through the wiring terminal (10).

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