Circuit breaker instantaneous characteristic detection device

Abstract

The invention provides a circuit breaker instantaneous characteristic detection device, and belongs to the field of circuit breaker detection devices.The circuit breaker instantaneous characteristic detection device comprises a machine base, a detection part perpendicular to the ground is arranged on the machine base, at least two detection devices are arranged on the detection part, and each detection device comprises a liftable upper detection end and a lower detection end located below the upper detection end; the upper detection end is fixedly arranged on the detection part, the lower detection end is fixedly arranged on the detection part, the upper detection end and the lower detection end are arranged to be symmetrically oriented L-shaped structures, support assemblies for supporting the circuit breaker are arranged near the two symmetrical sides of the lower detection end, and a lifting assembly for driving the support assemblies to move is arranged on one side of the upper detection end. According to the invention, through the arrangement of the support assembly, the circuit breaker can be supported before and after detection, the circuit breaker is prevented from inclining and falling off after detection, meanwhile, the circuit breaker can be conveniently inserted along a specific inclination angle before detection, manual observation and positioning are not needed, and the operation process before and after detection of the circuit breaker is simplified.

Description

Technical Field

[0001] This invention relates to the field of circuit breaker testing device technology, specifically a circuit breaker instantaneous characteristic testing device. Background Technology

[0002] Circuit breakers are protective electrical devices widely used in low-voltage power distribution systems in industry and buildings. The protective characteristics of circuit breakers include time-delay protection, instantaneous protection, and residual current protection. Instantaneous protection primarily protects against short circuits in low-voltage power distribution systems. When a short circuit occurs, this characteristic quickly disconnects the circuit to protect the safety of the power distribution system. Therefore, circuit breakers must undergo instantaneous characteristic testing and verification before leaving the factory.

[0003] An existing instantaneous characteristic testing device for circuit breakers has two sets of testing terminals on the testing surface. During testing, a manual operator aligns the groove of the bottom connection terminal of the circuit breaker to be tested with the lower testing terminal, inserts it at an angle, and after confirming insertion, rotates the circuit breaker to bring its rear side closer to and finally against the testing surface. Then, a switch is activated to move the movable upper testing terminal, causing it to descend and insert into the groove of the upper connection terminal of the circuit breaker, thus positioning and fixing the circuit breaker. The characteristic testing operation can then be initiated. After the test is completed, the upper testing terminal will... The circuit breaker is moved out of the groove on the upper detection end of the circuit breaker at one time, which causes the circuit breaker to tilt unevenly under force at first, requiring the operator to support it. Moreover, during the positioning and insertion of the circuit breaker, the circuit breaker obstructs the operator's observation of the position of the lower detection end. The operator needs to keep trying and adjusting the position to insert the circuit breaker at an angle outside the lower connection end. Both of these points make the current detection device still somewhat inconvenient to use, especially when using one detection device to detect multiple circuit breakers at the same time, which places high demands on the operator's observation and action.

[0004] Therefore, we propose a circuit breaker instantaneous characteristic detection device to solve the problems encountered above. Summary of the Invention

[0005] In view of the shortcomings of the existing technology, the present invention provides a circuit breaker instantaneous characteristic detection device to solve the problems mentioned in the background art.

[0006] The objective of this invention can be achieved through the following technical solution: A base is included, on which a detection section perpendicular to the ground is provided. At least two detection devices are provided on the detection section. Each detection device includes a liftable upper detection end and a lower detection end located below the upper detection end. The lower detection end is fixed to the detection section. The upper and lower detection ends are configured as symmetrically oriented L-shaped structures. Support assemblies for supporting the circuit breaker are provided near the symmetrical sides of the lower detection end. A lifting assembly for driving the movement of the support assembly is provided on one side of the upper detection end, and the lifting assembly is driven by the upper detection end.

[0007] In a preferred embodiment of the present invention, the support assembly includes mounting brackets fixed on the detection unit and located on two symmetrical sides near the lower detection end. The mounting brackets have sliding grooves, and the side of the mounting brackets opposite to the sliding grooves has a clearance groove. A roller is movably connected in the sliding grooves, and a roller is rotatably connected to the outside of the roller. A triangular bracket is fixed at one end of the roller. A flip plate and a bracket are welded to the two ends of the right-angle side of the triangular bracket away from the fixed end of the roller, respectively. A common support frame is welded between the two flip plates and the bracket. An inclined component for adjusting the tilt angle of the support frame is also provided between the triangular bracket and the detection unit.

[0008] In a preferred embodiment of the present invention, the tilting component includes a tilting frame fixed on the detection unit. The tilting frame is located above an adjacent mounting frame. A tilting guide groove is provided on one side of the tilting frame. An end rod is movably connected in the tilting guide groove. A straight rod is welded to the tail end of the end rod. One end of the straight rod is welded to an adjacent end of a triangular bracket.

[0009] In a preferred embodiment of the present invention, the lifting assembly includes a power component connected to the upper detection end. An outer sealing frame for sealing the lifting assembly is also fixed on the detection part and near the upper detection end. A transmission component is provided inside the outer sealing frame. The transmission component is driven by the power component to move the lifting component in a direction perpendicular to the ground. A lifting component is also provided inside the outer sealing frame and fixed on the detection part. The lifting component is connected to the roller shaft.

[0010] In a preferred embodiment of the present invention, the power component includes an insulating sleeve fixed to the outside of the upper detection end, a connecting frame fixed to the side of the insulating sleeve near the outer sealing frame, a power tooth plate fixed to the top of the connecting frame, and a reinforcing rib fixed between the power tooth plate and the connecting frame.

[0011] In a preferred embodiment of the present invention, the transmission component includes a worm gear rotatably connected between the inner side of the front end of the outer sealing frame and the detection part. A first gear is fixed on the outer side of the worm gear, and the first gear is located above the traveling direction of the power gear plate. A rotating shaft is rotatably connected between the inner walls of the left and right sides of the outer sealing frame. A second gear and a worm wheel are rotatably connected on the left and right sides of the outer side of the rotating shaft, respectively. The worm wheel meshes with the adjacent worm gear.

[0012] In a preferred embodiment of the present invention, the lifting component includes sliding brackets fixed on the left and right sides of the detection unit. A sliding toothed plate is slidably connected inside the sliding brackets. The sliding toothed plate meshes with an adjacent second gear. An extension is fixed at the lower end of the sliding toothed plate. An extension rod is fixed at one end of the extension near the power toothed plate. A lifting rod is rotatably connected to the outside of the extension rod. One end of the lifting rod is rotatably connected to the outside of an adjacent roller.

[0013] In a preferred embodiment of the present invention, a stabilizing frame is also fixed on one side of the mounting frame, and the stabilizing frame spans the adjacent sliding groove.

[0014] In a preferred embodiment of the present invention, a first through groove is provided on one side of the outer sealing frame to allow the first gear to be exposed, and a second through groove is provided on the top and bottom of the outer sealing frame to allow the sliding tooth plate to pass through.

[0015] In a preferred embodiment of the present invention, a recess is formed between the clearance groove and the adjacent sliding groove on the mounting bracket, and the adjacent rollers are movably connected to one side wall of the recess.

[0016] Compared with the prior art, the beneficial effects of the present invention are as follows: 1. The set bracket assembly can support the circuit breaker before and after testing, preventing it from tilting and falling after testing. At the same time, it can facilitate the insertion of the circuit breaker at a specific tilt angle before testing without the need for manual observation and positioning, thus simplifying the operation process before and after circuit breaker testing.

[0017] 2. With the lifting assembly, the operator only needs to insert the circuit breaker at an angle during testing. When the upper testing end is activated, it will quickly change the circuit breaker from an inclined state to a vertical state before moving downwards but before reaching the groove inside the circuit breaker. Then, the upper testing end will be inserted into the groove inside the upper connecting end of the vertical circuit breaker. After the test is completed, the upper testing end will first move out of the groove inside the upper connecting end of the circuit breaker, and then drive the mounting bracket with the circuit breaker from a vertical state to an inclined state, making it convenient for the operator to remove the circuit breaker.

[0018] 3. Through the transmission components, the lifting components will not drive the power components to move in the reverse direction after the power components are disengaged from the transmission components. This will prevent the circuit breaker from pulling the mounting bracket to change the safe tilt angle when it is separated from the upper connection end. This ensures that the lifting assembly has high stability and reliability in actual operation. Attached Figure Description

[0019] To facilitate understanding by those skilled in the art, the present invention will be further described below with reference to the accompanying drawings.

[0020] Figure 1 This is a three-dimensional structural schematic diagram of the present invention; Figure 2 This is one of the partial structural schematic diagrams of the present invention; Figure 3 This is a partial structural schematic diagram of the present invention; Figure 4 This is a three-dimensional enlarged schematic diagram of the mounting bracket and the stabilizer frame working together in this invention; Figure 5 This is a three-dimensional enlarged structural diagram of the outer sealing frame in this invention; Figure 6 yes Figure 1 An enlarged schematic diagram of part A is shown below; Figure 7 yes Figure 2 The enlarged schematic diagram of part B shown below; Figure 8 yes Figure 3 The enlarged schematic diagram of section C is shown.

[0021] In the diagram: 1. Base; 2. Detection section; 3. Upper detection end; 4. Lower detection end; 5. Support assembly; 6. Lifting assembly; 7. Mounting frame; 8. Sliding groove; 9. Clearance groove; 10. Roller; 11. Triangular support; 12. Tilting plate; 13. Bracket; 14. Support frame; 15. Inclining component; 16. Inclining frame; 17. Inclining guide groove; 18. End rod; 19. Straight rod; 20. Power component; 21. Outer sealing frame; 22. Transmission component; 23. Lifting component; 24. Insulating sleeve; 25. Power gear plate; 26. Connecting frame; 27. Reinforcing rib; 28. Worm gear; 29. ​​First gear; 30. Rotating shaft; 31. Second gear; 32. Worm wheel; 33. Sliding bracket; 34. Sliding gear plate; 35. Extension part; 36. Extension rod; 37. Lifting rod; 38. Roller; 39. Stabilizing frame; 40. First through groove; 41. Second through groove. Detailed Implementation

[0022] The technical solution of the present invention will be clearly and completely described below with reference to the embodiments. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0023] Please see Figures 1-8 As shown, a circuit breaker instantaneous characteristic testing device includes a base 1, a testing section 2 perpendicular to the ground is provided on the base 1, and at least two testing devices are provided on the testing section 2. The testing devices include a liftable upper testing end 3 and a lower testing end 4 located below the upper testing end 3. The lower testing end 4 is fixed on the testing section 2. Soft pads are provided on the plane of the testing section 2 on the left and right sides respectively. The soft pads are used to protect the side of the circuit breaker close to the testing section 2, so as to avoid friction between the rear end face and bottom edge of the circuit breaker and the testing section 2 when the circuit breaker is inserted at an angle, which would cause scratches on the surfaces of the two components. The upper testing end 3 and the lower testing end 4 are configured as symmetrical L-shaped structures. Several L-shaped structures are provided in the horizontal direction. Support assemblies 5 for supporting the circuit breaker are provided near the symmetrical sides of the lower testing end 4. A lifting assembly 6 for driving the movement of the support assembly 5 is provided on one side of the upper testing end 3. The lifting assembly 6 is driven by the upper testing end 3.

[0024] In this embodiment, the support assembly 5 includes mounting brackets 7 fixed on the detection unit 2 and located on opposite sides near the lower detection end 4. The mounting brackets 7 have connecting parts parallel to the detection unit 2 for fixing the bracket to the detection unit 2. A sliding groove 8 is provided on the mounting brackets 7, allowing the roller shaft 10 to pass through and move inwards, while only allowing the roller shaft 10 to move along the z-axis. A clearance groove 9 is provided on the side of the mounting bracket 7 opposite to the sliding groove 8 to avoid obstructing the triangular support 11 and preventing interference. The roller shaft 10 is movably connected within the sliding groove 8, and a roller 38 is rotatably connected to the outer side of the roller shaft 10. The roller 38 is movably connected to the mounting bracket 7 to reduce friction during the lifting and lowering of the roller shaft 10. A triangular support 11 is fixed to one end of the roller shaft 10. The shape of the triangular support 11 is used to improve the support stability of the bracket through three-point positioning, and its two ends can be connected to different external components respectively. Its hollow structure reduces material costs. A flipping plate 12 and a bracket 13 are welded to both ends of the right-angled side of the fixed end of the roller shaft 10. The bracket 13 includes a connecting part connected to two triangular supports 11 and a base plate that supports the bottom of the circuit breaker. It can prevent the circuit breaker from sliding down under the action of gravity and is used to fix the position of the circuit breaker. A common support frame 14 is welded between the two flipping plates 12 and the bracket 13. The two sides of the support frame 14 are respectively chamfered. The support frame 14 forms a concave structure in front of the circuit breaker to generate an upward support force when the circuit breaker is tilted. It supports the circuit breaker in the tilted state. An inclined component 15 for adjusting the tilt angle of the support frame 14 is also provided between the triangular supports 11 and the detection part 2. Through the provided support assembly 5, the circuit breaker can be supported before and after the detection to prevent the circuit breaker from tilting and falling after the detection. At the same time, it is convenient to insert the circuit breaker at a specific tilt angle before the detection without manual observation and positioning, which simplifies the operation process before and after the circuit breaker detection.

[0025] In this embodiment, the tilting component 15 includes a tilting frame 16 fixed on the detection unit 2. The tilting frame 16 is located above the adjacent mounting frame 7. A tilting guide groove 17 is provided on one side of the tilting frame 16. The trajectory of the tilting guide groove 17 should be an arc-shaped segment, which determines the trajectory of the circuit breaker as it rises with one end of the roller shaft 10. In actual design, the design of this arc segment should ensure that the inner groove of the lower connecting end of the circuit breaker does not continuously abut against the end face of the lower detection end 4 during the tilting process of the circuit breaker rising with the support frame 14. This reduces the wear generated in the groove of the lower connecting end during loading and unloading. An end rod 18 is movably connected in the tilting guide groove 17. The end rod 18 is guided by the tilting guide groove 17 and then drives the flipping plate 12 and the triangular bracket 11 to tilt during the lifting and lowering of the roller shaft 10 via a straight rod 19 of fixed length. A straight rod 19 is welded to the tail end of rod 18. One end of the straight rod 19 is welded to the adjacent end of the triangular bracket 11. By fixing the straight rod 19 to the flipping plate 12, and with the length of the straight rod 19 being constant, the inclined guide groove 17 tends to bend away from the detection part 2 at the top. This design of the inclined guide groove 17, combined with the installation method of the straight rod 19, allows the straight rod 19 to force the triangular bracket 11 to rotate around the axis of the roller shaft 10 away from the detection part 2 through the guiding effect of the end rod 18 in the inclined guide groove 17 when the roller shaft 10 moves the triangular bracket 11 upward. This causes the support frame 14 to be tilted from a vertical state. At the same time, this tilting process is not a fixed-point rotational tilt, but a combination of synchronous movement and rotation in the z-axis direction, which makes it easy for the internal circuit breaker to not conflict with the lower detection end 4 when the support frame 14 is rotated open.

[0026] In this embodiment, the lifting assembly 6 includes a power component 20 connected to the upper detection end 3. The power component 20 can be any structure driven by the lifting and lowering movement of the upper detection end 3 before and after detection. Its main characteristic is that the final power output is still a linear motion in the z-axis direction. An outer sealing frame 21 for sealing the lifting assembly 6 is also fixed on the detection part 2 and near the upper detection end 3. The outer sealing frame 21 is used to protect part of the internal structure of the lifting assembly 6. A transmission component 22 is provided inside the outer sealing frame 21. The transmission component 22 drives the lifting component 23 to move in a direction perpendicular to the ground through the power component 20. The transmission component 22 is located inside the outer sealing frame 21 and is fixed. A lifting component 23 is also provided on the detection unit 2. The lifting component 23 is connected to the roller 10. Through the lifting assembly 6, the operator only needs to insert the circuit breaker at an angle during the inspection. When the upper detection end 3 is started, the upper detection end 3 will quickly change the circuit breaker from an inclined state to a vertical state when it moves down but has not yet moved into the groove inside the circuit breaker. Then the upper detection end 3 is inserted into the groove inside the upper connection end of the vertical circuit breaker. At the same time, after the inspection is completed, the upper detection end 3 will first move out of the groove inside the upper connection end of the circuit breaker, and then drive the mounting bracket 7 with the circuit breaker from a vertical state to an inclined state, so that the operator can easily take out the circuit breaker.

[0027] In this embodiment, the power component 20 includes an insulating sleeve 24 fixed to the outside of the upper detection end 3. A connecting frame 26 is fixed on the side of the insulating sleeve 24 near the outer sealing frame 21. A power tooth plate 25 is fixed on the top of the connecting frame 26. A reinforcing rib 27 is fixed between the power tooth plate 25 and the connecting frame 26. The reinforcing rib 27 can improve the connection stability between the power tooth plate 25 and the connecting frame 26 and prevent the power tooth plate 25 from tilting.

[0028] In this embodiment, the transmission component 22 includes a worm gear 28 rotatably connected between the inner front end of the outer sealing frame 21 and the detection part 2. A first gear 29 is fixed on the outer side of the worm gear 28. The first gear 29 is located above the traveling direction of the power gear plate 25. A rotating shaft 30 is rotatably connected between the inner walls of the left and right sides of the outer sealing frame 21. A second gear 31 and a worm wheel 32 are rotatably connected on the left and right sides of the outer side of the rotating shaft 30, respectively. The worm wheel 32 meshes with the adjacent worm gear 28. The structure with the worm wheel 32 and the worm gear 28 is necessary, as it ensures that the transmission direction of the structure can only be from the power gear plate 25 to the sliding gear plate 34, and not from the sliding gear plate 34 to the power gear plate 25. Since the power gear plate 25 is not always meshing with the first gear 29, this structure ensures that when the circuit breaker and the mounting bracket 7 are in an inclined state, the mounting bracket 7... The circuit breaker will not tilt naturally under its own weight, causing the first gear 29 to rotate idly. The shaft 30 can change the direction of force transmission according to the setting position of the worm gear 32 to adapt to the installation position of the worm gear 32 and the worm 28. At the same time, the tooth profile of the worm gear 32 and the worm 28 should be set so that when the worm rotates counterclockwise in the front view direction, the worm gear 32 should drive the shaft 30 to rotate clockwise in the left view direction. This ensures that the lifting assembly 6 drives the bracket assembly 5 in the correct direction. Through the transmission component 22, it can be realized that after the power component 20 is disengaged from the transmission component 22, the lifting component 23 will not drive the power component 20 to move in the opposite direction. This will prevent the circuit breaker from pulling the mounting bracket 7 to change the safe tilt angle when it is separated from the upper detection end 3. This ensures that the lifting assembly 6 has high stability and reliability in actual operation.

[0029] In this embodiment, the lifting component 23 includes sliding brackets 33 fixed on the left and right sides of the detection unit 2. The sliding brackets 33 are used to position and guide the sliding toothed plate 34, and facilitate the installation of the sliding toothed plate 34. The sliding toothed plate 34 is slidably connected inside the sliding brackets 33. The sliding toothed plate 34 meshes with the adjacent second gear 31. An extension portion 35 is fixed at the lower end of the sliding toothed plate 34. The extension portion 35 does not have teeth and will not enter the outer sealing frame 21 during the movement of the sliding toothed plate 34, thereby avoiding unnecessary interference between the extension rod 36, the lifting rod 37, and the outer sealing frame 21. An extension rod 36 is fixedly provided on one end of the extension 35 near the power toothed plate 25. The extension rod 36 is used to adjust the mounting plane between itself and one end of the adjacent roller shaft 10 below, so as to facilitate the installation of the lifting rod 37. A limit ring is provided on the outer side of one end of the extension rod 36 to determine and limit the sliding plane of the lifting rod 37. The lifting rod 37 is rotatably connected to the outer side of the extension rod 36. One end of the lifting rod 37 is rotatably connected to the outer side of the adjacent roller shaft 10. The lifting component 23 is used to move linearly in the same direction as the power component 20, so as to cooperate with the bracket assembly 5 below to drive the rotating movement of the support frame 14.

[0030] In this embodiment, a stabilizing frame 39 is also fixed on one side of the mounting frame 7. The stabilizing frame 39 spans the adjacent sliding groove 8. The stabilizing frame 39 is used to connect the left and right parts of the mounting frame 7 divided by the sliding groove 8, and is used to improve the strength of the weak position on the right side and prevent it from breaking or bending after long-term use.

[0031] In this embodiment, a first through groove 40 is provided on one side of the outer sealing frame 21 to allow the first gear 29 to be exposed, and a second through groove 41 is provided on the top and bottom of the outer sealing frame 21 to allow the sliding tooth plate 34 to pass through. The first through groove 40 is used to expose the first gear 29 outside the outer sealing frame 21 so as to facilitate meshing with the power tooth plate 25, and the second through groove 41 is used to allow the sliding tooth plate 34 to move up and down to pass through. The provision of these two grooves can ensure the normal movement of the structure.

[0032] In this embodiment, a recess is formed between the clearance groove 9 and the adjacent sliding groove 8 on the mounting frame 7. The adjacent roller 38 is movably connected to one side wall of the recess. The recess is used to abut against the roller 38 and support one side of the roller 38, so that the friction experienced by the roller shaft 10 when it rises and falls is changed to rolling friction, thereby reducing the friction of rising and falling.

[0033] In practical use, the invention first determines that the upper detection end 3 on the base 1 is at its highest point. At this time, both the support frame 14 and the bracket 13 in the bracket assembly 5 are in an inclined state. The circuit breaker can then be inserted by inserting it into the support frame 14 along the inclined surface of its inner surface until the bottom of the circuit breaker slides to contact the bottom inner wall of the bracket 13. Afterward, the operator starts the device and lowers the upper detection end 3 on that side via a switch. As the upper detection end 3 lowers, the connecting frame 26 pulls the power gear plate 25 down. When the upper detection end 3 is at its highest point, the power gear plate 25 engages with the first gear 29. When in engagement, if the height of the power gear plate 25 decreases, it will immediately drive the first gear 29 to rotate. The rotation of the first gear 29 drives the worm gear 28 to rotate. The worm gear 28, through engagement with the worm wheel 32, drives the rotating shaft 30 to rotate. The rotating shaft 30 further drives the second gear 31 to rotate. The second gear 31, through engagement with the sliding gear plate 34, drives the sliding gear plate 34 to decrease in height synchronously. When the height of the sliding gear plate 34 decreases, the extension 35, the extension rod 36, and the lifting rod 37 drive the roller 10 on that side to decrease in height. Simultaneously, the angle of the lifting rod 37 outside the extension rod 36 and the roller 10 on that side changes, causing the roller 10 to... When the height decreases, the roller 38 rolls to reduce friction during descent. Simultaneously, the triangular bracket 11 pulls the tilting plate 12, bracket 13, and support frame 14 to decrease in height synchronously. As the tilting plate 12 decreases, it pulls the end rod 18 within the inclined guide groove 17 via the straight rod 19. Since the length of the straight rod 19 and the angle between the straight rod 19 and the tilting plate 12 are fixed, when the tilting plate 12 descends, it is guided by the inclined guide groove 17, causing the tilting plate 12 to be pulled by the straight rod 19, which rotates the originally inclined support frame 14 towards the side closer to the detection section 2 until the roller 10 reaches its lowest point. At this point, the support frame 14... 4 and bracket 13 drive the internal circuit breaker to a vertical position. The bottom groove of the circuit breaker contacts the adjacent lower detection end 4. From this moment, the upper power gear plate 25 disengages from the first gear 29. At this time, the first gear 29 no longer rotates. At the same time, due to the one-way transmission characteristics between the worm gear 32 and the worm 28, the circuit breaker cannot drive the first gear 29 to reverse through the support frame 14. At this time, the upper detection end 3 further lowers its height until it is inserted into the groove at the top of the vertical circuit breaker and contacts the top connection end of the circuit breaker. At this time, the operator can further start the device to perform instantaneous characteristic testing on the circuit breaker in this state.

[0034] The preferred embodiments of the present invention disclosed above are merely illustrative of the invention. These preferred embodiments do not exhaustively describe all details, nor do they limit the invention to any specific implementation. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of the invention, thereby enabling those skilled in the art to better understand and utilize the invention. The invention is limited only by the claims and their full scope and equivalents.

Claims

1. A circuit breaker instantaneous characteristic testing device, comprising a base (1), wherein a testing section (2) perpendicular to the ground is provided on the base (1), and at least two testing devices are provided on the testing section (2), the testing devices comprising a liftable upper testing end (3) and a lower testing end (4) located below the upper testing end (3), the lower testing end (4) being fixed on the testing section (2), and the upper testing end (3) and the lower testing end (4) being configured as an L-shaped structure with symmetrical orientation, characterized in that, A support assembly (5) for supporting the circuit breaker is provided near the two symmetrical sides of the lower detection end (4), and a lifting assembly (6) for driving the support assembly (5) is provided on one side of the upper detection end (3). The lifting assembly (6) is driven by the upper detection end (3).

2. The circuit breaker instantaneous characteristic detection device according to claim 1, characterized in that, The bracket assembly (5) includes mounting brackets (7) fixed on the detection unit (2) and located on opposite sides near the lower detection end (4). A sliding groove (8) is provided on the mounting bracket (7). A clearance groove (9) is provided on the side of the mounting bracket (7) opposite to the sliding groove (8). A roller shaft (10) is movably connected in the sliding groove (8). A roller (38) is rotatably connected to the outside of the roller shaft (10). A triangular bracket (11) is fixed at one end of the roller shaft (10). A flip plate (12) and a bracket (13) are welded to the two ends of the right angle side of the triangular bracket (11) away from the fixed end of the roller shaft (10). The same support frame (14) is welded between the two flip plates (12) and the bracket (13). An inclined component (15) for adjusting the tilt angle of the support frame (14) is also provided between the triangular bracket (11) and the detection unit (2).

3. The instantaneous characteristic detection device for a circuit breaker according to claim 2, characterized in that, The tilting component (15) includes a tilting frame (16) fixed on the detection unit (2). The tilting frame (16) is located above the adjacent mounting frame (7). A tilting guide groove (17) is provided on one side of the tilting frame (16). An end rod (18) is movably connected in the tilting guide groove (17). A straight rod (19) is welded to the tail end of the end rod (18). One end of the straight rod (19) is welded to the adjacent end of the triangular bracket (11).

4. The instantaneous characteristic detection device for a circuit breaker according to claim 3, characterized in that, The lifting assembly (6) includes a power component (20) connected to the upper detection end (3). An outer sealing frame (21) for sealing the lifting assembly (6) is also fixed on the detection part (2) and near the upper detection end (3). A transmission component (22) is provided inside the outer sealing frame (21). The transmission component (22) is driven by the power component (20) to move the lifting component (23) in a direction perpendicular to the ground. A lifting component (23) is also provided inside the outer sealing frame (21) and fixed on the detection part (2). The lifting component (23) is connected to the roller (10).

5. The instantaneous characteristic detection device for a circuit breaker according to claim 4, characterized in that, The power component (20) includes an insulating sleeve (24) fixed on the outside of the upper detection end (3). A connecting frame (26) is fixed on the side of the insulating sleeve (24) near the outer sealing frame (21). A power tooth plate (25) is fixed on the top of the connecting frame (26). A reinforcing rib (27) is fixed between the power tooth plate (25) and the connecting frame (26).

6. The instantaneous characteristic detection device for a circuit breaker according to claim 5, characterized in that, The transmission component (22) includes a worm (28) rotatably connected between the inner side of the front end of the outer sealing frame (21) and the detection part (2). A first gear (29) is fixed on the outer side of the worm (28). The first gear (29) is located above the traveling direction of the power gear plate (25). A rotating shaft (30) is rotatably connected between the inner walls of the left and right sides of the outer sealing frame (21). A second gear (31) and a worm wheel (32) are rotatably connected on the left and right sides of the outer side of the rotating shaft (30). The worm wheel (32) meshes with the adjacent worm (28).

7. The instantaneous characteristic detection device for a circuit breaker according to claim 6, characterized in that, The lifting component (23) includes sliding brackets (33) fixed on the left and right sides of the detection unit (2). A sliding toothed plate (34) is slidably connected inside the sliding bracket (33). The sliding toothed plate (34) meshes with the adjacent second gear (31). An extension (35) is fixed at the lower end of the sliding toothed plate (34). An extension rod (36) is fixed at one end of the extension (35) near the power toothed plate (25). A lifting rod (37) is rotatably connected to the outside of the extension rod (36). One end of the lifting rod (37) is rotatably connected to the outside of the adjacent roller (10).

8. The instantaneous characteristic detection device for a circuit breaker according to claim 7, characterized in that, A stabilizing frame (39) is also fixed on one side of the mounting bracket (7), and the stabilizing frame (39) spans the adjacent sliding groove (8).

9. The instantaneous characteristic detection device for a circuit breaker according to claim 8, characterized in that, The outer sealing frame (21) has a first through groove (40) on one side that allows the first gear (29) to be exposed, and the top and bottom of the outer sealing frame (21) have second through grooves (41) that allow the sliding tooth plate (34) to pass through.

10. The instantaneous characteristic detection device for a circuit breaker according to claim 9, characterized in that, A recess is formed between the clearance groove (9) and the adjacent sliding groove (8) on the mounting bracket (7), and the adjacent roller (38) is movably connected to one side wall of the recess.

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