Auxiliary device for testing circuit breaker

Abstract

The invention relates to the technical field of circuit breaker testing, in particular to an auxiliary device for circuit breaker inspection, which comprises a testing cabinet and a conveying belt, a plurality of inspection modules are arranged on the testing cabinet, each inspection module comprises a transfer mechanism, a power connection mechanism and a testing terminal, the transfer mechanism comprises a mounting plate, the mounting plate is fixed on the testing cabinet, and the power connection mechanism is fixed on the testing cabinet. The bearing support is fixed on the mounting plate, the transfer sliding rail is fixed on the mounting plate, the sliding support is driven by the rodless cylinder to move along the transfer sliding rail, and the circuit breaker can be clamped in the sliding support and is supported by the bearing support; the power connection mechanism comprises a plurality of connection columns, the test terminal is electrically connected with the plurality of connection columns, and the test terminal is used for carrying out automatic inspection on the circuit breaker. After the circuit breaker is moved to a to-be-tested position through the sliding support of the transfer mechanism, the contact above the circuit breaker and the contact below the circuit breaker are connected at the same time through the connecting column of the power connection mechanism, and the contact of the circuit breaker is prevented from being damaged in the connecting process.

Description

Technical Field

[0001] This invention relates to the field of circuit breaker testing technology, and more particularly to auxiliary devices for circuit breaker testing. Background Technology

[0002] To ensure the reliability of circuit breakers, their various technical indicators must be tested and inspected before the products leave the factory. The existing circuit breaker characteristic test benches have circuit breaker loading fixture structures that are difficult to adapt to the testing requirements of various circuit breakers, resulting in inconvenience in disassembling and assembling circuit breakers and unreliable electrical contact.

[0003] A circuit breaker delay testing platform, disclosed in patent document CN120334732A, includes a mounting platform with a clamping platform fixedly mounted on it. A distance sensor is located on one side of the clamping platform, and a positioning platform is located on the opposite bottom side. A clamping assembly is positioned above the clamping platform. A conductive slide rod is slidably mounted on the mounting platform, with one end of the rod contacting a circuit breaker connector and the other end connected to a power supply terminal piece. A vertical positioning rod is slidably mounted below the positioning platform, its upper end penetrating the positioning platform and connecting to the bottom of the circuit breaker, while its lower end is connected to a motor that drives its rotation. However, this patent still has some shortcomings: it is difficult to connect different numbers of circuit breaker contacts simultaneously according to actual needs, making it impossible to comprehensively test the circuit breaker. Summary of the Invention

[0004] To address the problem of the difficulty in conducting comprehensive inspections of circuit breakers, this invention provides an auxiliary device for circuit breaker inspection.

[0005] The technical solution adopted by the present invention to solve its technical problem is: an auxiliary device for circuit breaker testing, including a test cabinet and a conveyor belt. The test cabinet is equipped with multiple testing modules. The conveyor belt is located beside the test cabinet for transporting circuit breakers. Each testing module includes a transfer mechanism, a power connection mechanism, and a test terminal. The transfer mechanism includes a mounting plate, a support bracket, a transfer rail, and a sliding bracket. The mounting plate is fixed to the test cabinet. The support bracket has a U-shaped structure, with both ends vertically fixed to the mounting plate. The transfer rail is horizontally fixed to the mounting plate. The sliding bracket is mounted on the transfer rail and moved along the transfer rail by a rodless cylinder. The sliding bracket is located above the support bracket. The circuit breaker can be engaged in the sliding bracket and supported by the support bracket. The power connection mechanism includes multiple connecting columns respectively mounted on the upper and lower sides of one end of the transfer slide rail. The connecting columns are used for electrical connection with the contacts of the circuit breaker. The test terminal is fixed on the outside of the support bracket and is electrically connected to the multiple connecting columns. The test terminal is used for automatic testing of the circuit breaker.

[0006] Preferably, both ends of the sliding bracket are fixed with guard plates, and the distance between the guard plates at both ends is greater than the width of the circuit breaker, so that the circuit breaker can be placed between the two guard plates.

[0007] Preferably, the sliding bracket is further provided with a clamping mechanism, which includes a connecting plate, a roller seat, a pressing wheel, and two spring pieces. One end of the connecting plate is hinged to the guard plate, and the other end of the connecting plate is hinged to the roller seat. The two ends of one spring piece are fixedly connected to the guard plate and the connecting plate, respectively, and the two ends of the other spring piece are fixedly connected to the guard plate and the roller seat, respectively. The pressing wheel is rotatably mounted on the roller seat. When the circuit breaker is clamped with the sliding bracket, the pressing wheel abuts against the side of the circuit breaker.

[0008] Preferably, the clamping mechanism further includes a friction plate and an elastic telescopic rod. The friction plate is slidably disposed in the gap between the pressure wheel and the roller seat. The elastic telescopic rod is vertically slidably mounted on the roller seat. One end of the elastic telescopic rod is vertically fixedly connected to the friction plate, and the other end of the elastic telescopic rod is fixed with a ball head. When the sliding bracket moves along the transfer slide rail toward the connecting column, the elastic telescopic rod can abut against the end of the supporting bracket.

[0009] Preferably, the power connection mechanism further includes an alignment cylinder, an alignment guide rail, a guide rail seat, a connecting rod, a mounting rod, a height adjustment cylinder, an adjustment slide rail, and a height adjustment plate. The adjustment slide rail is fixed to the mounting plate, and the height adjustment plate is slidably mounted on the adjustment slide rail. The height adjustment cylinder is fixed to the mounting plate, and the piston rod of the height adjustment cylinder is fixedly connected to the height adjustment plate. The guide rail seat is vertically fixed to the height adjustment plate. The alignment guide rail is slidably mounted in the guide rail seat and vertically passes through the height adjustment plate. The alignment cylinder is fixed to the height adjustment plate. One end of the alignment guide rail is fixedly connected to the piston rod of the alignment cylinder via a connecting rod, and the other end of the alignment guide rail is fixedly connected to the mounting rod. The connecting rod is fixed to the mounting rod.

[0010] Preferably, a stabilizing block is also fixed on the height adjustment plate, and a stabilizing rod is vertically fixed on one side of each connecting column, with each stabilizing rod being slidably connected to the stabilizing block.

[0011] Preferably, the end of the connecting column is provided with a detachable column head, which is fixedly connected to the connecting column by bolts and can abut against the contacts of the circuit breaker.

[0012] The beneficial effect of this invention is that after the circuit breaker is moved to the test position by the sliding bracket of the transfer mechanism, the upper and lower contacts of the circuit breaker are connected simultaneously by the connecting column of the power connection mechanism, thus avoiding damage to the contacts of the circuit breaker during the connection process. Attached Figure Description

[0013] To more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings in the following description are merely exemplary, and those skilled in the art can derive other embodiments based on the provided drawings without creative effort.

[0014] Figure 1 This is a schematic diagram of the optimal embodiment of the auxiliary device for circuit breaker testing according to the present invention; Figure 2 This is a top view of the testing mechanism of the auxiliary device for circuit breaker testing according to the present invention; Figure 3 This is a schematic diagram of the transfer mechanism of the auxiliary device for circuit breaker testing according to the present invention; Figure 4 This is a schematic diagram of the connecting column of the auxiliary device for circuit breaker testing according to the present invention; Figure 5 This is a schematic diagram of the height adjustment plate of the auxiliary device for circuit breaker testing according to the present invention. Figure 6 This is a schematic diagram of the support bracket of the auxiliary device for circuit breaker testing according to the present invention; Figure 7 This is a schematic diagram of the sliding bracket of the auxiliary device for circuit breaker testing according to the present invention; Figure 8 This is a schematic diagram of the pressure wheel of the auxiliary device for circuit breaker testing according to the present invention; Figure 9 This is a schematic diagram of the detachable column head of the auxiliary device for circuit breaker testing according to the present invention; Figure 10 This is a schematic diagram of the height adjustment cylinder of the auxiliary device for circuit breaker inspection according to the present invention.

[0015] Reference numerals: 1. Test cabinet; 2. Conveyor belt; 3. Inspection module; 4. Transfer mechanism; 5. Power connection mechanism; 6. Test terminal; 7. Mounting plate; 8. Support bracket; 9. Transfer slide rail; 10. Sliding bracket; 11. Rodless cylinder; 12. Connecting column; 13. Guard plate; 14. Connecting plate; 15. Roller seat; 16. Pressure roller; 17. Spring; 18. Friction plate; 19. Elastic telescopic rod; 20. Alignment cylinder; 21. Alignment guide rail; 22. Guide rail seat; 23. Connecting rod; 24. Mounting rod; 25. Height adjustment cylinder; 26. Adjustment slide rail; 27. Height adjustment plate; 28. Stabilizing block; 29. ​​Stabilizing rod; 30. Detachable column head. Detailed Implementation

[0016] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. 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.

[0017] The concepts involved in this application will first be described with reference to the accompanying drawings. It should be noted that the following descriptions of various concepts are only for the purpose of making the content of this application easier to understand and do not constitute a limitation on the scope of protection of this application; furthermore, the embodiments and features in the embodiments of this application can be combined with each other unless otherwise specified. This application will now be described in detail with reference to the accompanying drawings and embodiments.

[0018] like Figures 1 to 10 As shown, the present invention provides an embodiment of an auxiliary device for circuit breaker testing, including a test cabinet 1 and a conveyor belt 2. The test cabinet 1 is provided with multiple testing modules 3. The conveyor belt 2 is located on the side of the test cabinet 1 for transporting circuit breakers. Each testing module 3 includes a transfer mechanism 4, a power connection mechanism 5, and a test terminal 6. The transfer mechanism 4 includes a mounting plate 7, a support bracket 8, a transfer slide rail 9, and a sliding bracket 10. The mounting plate 7 is fixed on the test cabinet 1. The support bracket 8 has a U-shaped structure, and both ends of the support bracket 8 are vertically fixed on the mounting plate 7. The transfer slide rail 9 is horizontally fixed on the mounting plate 7. The sliding bracket 10 is installed on the transfer slide rail 9 and is driven to move along the transfer slide rail 9 by a rodless cylinder 11. The sliding bracket 10 is located on the upper side of the support bracket 8. The circuit breaker can be snapped into the sliding bracket 10 and supported by the support bracket 8. Both ends of the sliding bracket 10 are fixed with guard plates 13. The distance between the guard plates 13 at both ends is greater than the width of the circuit breaker, so that the circuit breaker can be placed between the two guard plates 13.

[0019] The sliding bracket 10 is also equipped with a clamping mechanism, which includes a connecting plate 14, a roller seat 15, a pressing wheel 16 and two spring pieces 17. One end of the connecting plate 14 is hinged to the guard plate 13, and the other end of the connecting plate 14 is hinged to the roller seat 15. The two ends of one spring piece 17 are fixedly connected to the guard plate 13 and the connecting plate 14 respectively, and the two ends of the other spring piece 17 are fixedly connected to the guard plate 13 and the roller seat 15 respectively. The pressing wheel 16 is rotatably mounted on the roller seat 15. When the circuit breaker is clamped with the sliding bracket 10, the pressing wheel 16 abuts against the side of the circuit breaker.

[0020] The clamping mechanism also includes a friction plate 18 and an elastic telescopic rod 19. The friction plate 18 is slidably disposed in the gap between the pressure wheel 16 and the roller seat 15. The elastic telescopic rod 19 is vertically slidably mounted on the roller seat 15. One end of the elastic telescopic rod 19 is vertically fixedly connected to the friction plate 18, and the other end of the elastic telescopic rod 19 is fixed with a ball head. When the sliding bracket 10 moves along the transfer slide rail 9 toward the connecting column 12, the elastic telescopic rod 19 can abut against the end of the supporting bracket 8.

[0021] The working principle of the clamping mechanism is as follows: When the transfer mechanism 4 is in the initial position, the sliding bracket 10 is located on the transfer slide rail 9 at the end away from the power connection mechanism 5. After the conveyor belt 2 transports the circuit breaker to the test cabinet 1, the circuit breaker is placed into the sliding bracket 10 from top to bottom by manual or robotic arm. During this process, one side of the circuit breaker will abut against the pressure wheel 16 and drive the pressure wheel 16 to roll. When the circuit breaker moves into place, the lower half of the circuit breaker abuts against the support bracket 8 to prevent the circuit breaker from falling. After the circuit breaker is clamped in place, the spring force of the spring piece 17 pushes the connecting plate 14 and passes through the connecting plate 14. The pressure roller 16 pushes the circuit breaker toward the guard plate 13 on the other side of the sliding bracket 10. That is, the side of the circuit breaker is pressed against the connecting plate 14 and the pressure roller 16. Then, the sliding bracket 10 drives the circuit breaker to move toward the energizing mechanism 5. When the sliding bracket 10 drives the circuit breaker to the position, the elastic telescopic rod 19 abuts against the side wall at the end of the support bracket 8, so that the elastic telescopic rod 19 pushes the friction plate 18 toward the pressure roller 16 until the friction plate 18 abuts against the pressure roller 16. This prevents the pressure roller 16 from deflecting during the circuit breaker test and improves the stability of the circuit breaker test. When testing a wider circuit breaker, the circuit breaker will press against the roller seat 15 and the connecting plate 14, causing the connecting plate 14 to deflect up and down. During this process, the clamping wheel 16 and the roller seat 15 can stay in different positions so that the clamping wheel 16 can adaptively clamp the circuit breaker of different widths, and the elastic telescopic rod 19 can be compressed to avoid obstructing the movement of the circuit breaker and the sliding bracket 10.

[0022] The power connection mechanism 5 includes multiple connecting posts 12 respectively mounted on the upper and lower sides of one end of the transfer slide rail 9. The connecting posts 12 are used for electrical connection with the contacts of the circuit breaker. The ends of the connecting posts 12 are provided with detachable post heads 30. The detachable post heads 30 are fixedly connected to the connecting posts 12 by bolts, which facilitates the disassembly and replacement of the detachable post heads 30. The detachable post heads 30 can abut against the contacts of the circuit breaker. When testing different circuit breakers, the corresponding number of detachable post heads 30 can be installed according to the number of contacts of the circuit breaker to meet the testing requirements of different circuit breakers.

[0023] The power connection mechanism 5 also includes an alignment cylinder 20, an alignment guide rail 21, a guide rail seat 22, a connecting rod 23, a mounting rod 24, a height adjustment cylinder 25, an adjustment slide rail 26, and a height adjustment plate 27. The adjustment slide rail 26 is fixed on the mounting plate 7, and the height adjustment plate 27 is slidably mounted on the adjustment slide rail 26. The height adjustment cylinder 25 is fixed on the mounting plate 7, and the piston rod of the height adjustment cylinder 25 is fixedly connected to the height adjustment plate 27. The guide rail seat 22 is vertically fixed on the height adjustment plate 27. The alignment guide rail 21 is slidably mounted in the guide rail seat 22 and vertically passes through the height adjustment plate 27. The alignment cylinder 20 is fixed on the height adjustment plate 27. One end of the alignment guide rail 21 is fixedly connected to the piston rod of the alignment cylinder 20 through the connecting rod 23, and the other end of the alignment guide rail 21 is fixedly connected to the mounting rod 24. The connecting column 12 is fixed on the mounting rod 24.

[0024] After the circuit breaker is moved to the test position by the sliding bracket 10 of the transfer mechanism 4, the alignment cylinder 20 drives the alignment guide rail 21 to move, and the alignment guide rail 21 drives the mounting rod 24 to move, so that the connecting post 12 fixed on the mounting rod 24 moves to the contact position of the circuit breaker. It is worth noting that the corresponding positions of the upper and lower contacts of the circuit breaker are provided with the energizing mechanism 5, so that the connecting post 12 and the detachable post head 30 can simultaneously connect to the upper and lower contacts of the circuit breaker, so that the detachable post head 30 at the end of the connecting post 12 can connect to the upper contacts and the lower contacts of the circuit breaker. The detachable column head 30 is aligned with the circuit breaker contacts. Then, the height adjustment cylinder 25 drives the height adjustment plate 27 to move vertically toward the circuit breaker contacts, thereby moving the detachable column head 30 toward the circuit breaker contacts until the detachable column head 30 comes into contact with the circuit breaker contacts. A limit switch is provided at the end point of the movement direction of the height adjustment plate 27, so that the height adjustment plate 27 can automatically stop moving after it has moved into place, thus preventing damage to the circuit breaker contacts when the detachable column head 30 comes into contact with the circuit breaker contacts.

[0025] The test terminal 6 is fixed on the outside of the support bracket 8. The test terminal 6 is electrically connected to multiple connecting posts 12. When the detachable post head 30 abuts against the contacts of the circuit breaker, the circuit breaker can be connected to the test terminal 6 through the detachable post head 30 and the connecting posts 12. Finally, the circuit breaker is automatically tested through the test terminal 6.

[0026] A stabilizing block 28 is also fixed on the height adjustment plate 27. A stabilizing rod 29 is vertically fixed on one side of each connecting column 12. Each stabilizing rod 29 is slidably connected to the stabilizing block 28. Through the cooperation of the stabilizing block 28 and the stabilizing rod 29, the connecting column 12 is guided, the structural strength of the connecting column 12 is improved, and the detachable column head 30 at the end of the connecting column 12 can be tightly abutted against the contacts of the circuit breaker, avoiding the shaking and slippage of the connection due to equipment vibration, and effectively improving the stability of the detachable column head 30 when connected to the contacts.

[0027] This document uses specific examples to illustrate the principles and implementation methods of this application. The descriptions of the above embodiments are only for the purpose of helping to understand the methods and core ideas of this application. The above are only preferred embodiments of this application. It should be noted that due to the limitations of textual expression, while there are objectively infinite specific structures, those skilled in the art can make several improvements, modifications, or changes without departing from the principles of this application, and can also combine the above technical features in an appropriate manner. These improvements, modifications, changes, or combinations, or the direct application of the inventive concept and technical solution to other situations without modification, should all be considered within the scope of protection of this application.

Claims

1. An auxiliary device for circuit breaker testing, characterized in that: The test cabinet (1) and conveyor belt (2) are included. Multiple test modules (3) are installed on the test cabinet (1). The conveyor belt (2) is located beside the test cabinet (1) and is used to transport circuit breakers. Each test module (3) includes a transfer mechanism (4), a power connection mechanism (5), and a test terminal (6). The transfer mechanism (4) includes a mounting plate (7), a support bracket (8), a transfer slide rail (9), and a sliding bracket (10). The mounting plate (7) is fixed to the test cabinet (1). The bracket (8) has a U-shaped structure. The two ends of the support bracket (8) are vertically fixed on the mounting plate (7). The transfer slide rail (9) is horizontally fixed on the mounting plate (7). The sliding bracket (10) is installed on the transfer slide rail (9) and is driven to move along the transfer slide rail (9) by the rodless cylinder (11). The sliding bracket (10) is located on the upper side of the support bracket (8). The circuit breaker can be snapped into the sliding bracket (10) and supported by the support bracket (8). The power connection mechanism (5) includes multiple connecting columns (12) respectively mounted on the upper and lower sides of one end of the transfer slide rail (9). The connecting columns (12) are used to electrically connect with the contacts of the circuit breaker. The test terminal (6) is fixed on the outside of the support bracket (8). The test terminal (6) is electrically connected to the multiple connecting columns (12). The test terminal (6) is used to automatically test the circuit breaker.

2. The auxiliary device for circuit breaker testing as described in claim 1, characterized in that: Both ends of the sliding bracket (10) are fixed with guard plates (13), and the distance between the guard plates (13) at both ends is greater than the width of the circuit breaker, so that the circuit breaker can be placed between the two guard plates (13).

3. The auxiliary device for circuit breaker testing as described in claim 2, characterized in that: The sliding bracket (10) is also provided with a clamping mechanism, which includes a connecting plate (14), a roller seat (15), a pressing wheel (16) and two spring pieces (17). One end of the connecting plate (14) is hinged to the guard plate (13), and the other end of the connecting plate (14) is hinged to the roller seat (15). One spring piece (17) is fixedly connected to the guard plate (13) and the connecting plate (14) at both ends, and the other spring piece (17) is fixedly connected to the guard plate (13) and the roller seat (15) at both ends. The pressing wheel (16) is rotatably mounted on the roller seat (15). When the circuit breaker is clamped with the sliding bracket (10), the pressing wheel (16) abuts against the side of the circuit breaker.

4. The auxiliary device for circuit breaker testing as described in claim 3, characterized in that: The clamping mechanism also includes a friction plate (18) and an elastic telescopic rod (19). The friction plate (18) is slidably disposed in the gap between the pressure wheel (16) and the roller seat (15). The elastic telescopic rod (19) is vertically slidably mounted on the roller seat (15). One end of the elastic telescopic rod (19) is vertically fixedly connected to the friction plate (18), and the other end of the elastic telescopic rod (19) is fixed with a ball head. When the sliding bracket (10) moves along the transfer slide rail (9) toward the connecting column (12), the elastic telescopic rod (19) can abut against the end of the supporting bracket (8).

5. The auxiliary device for circuit breaker testing as described in claim 1, characterized in that: The power connection mechanism (5) further includes an alignment cylinder (20), an alignment guide rail (21), a guide rail seat (22), a connecting rod (23), a mounting rod (24), a height adjustment cylinder (25), an adjustment slide rail (26), and a height adjustment plate (27). The adjustment slide rail (26) is fixed on the mounting plate (7), and the height adjustment plate (27) is slidably mounted on the adjustment slide rail (26). The height adjustment cylinder (25) is fixed on the mounting plate (7), and the piston rod of the height adjustment cylinder (25) is fixed to the height adjustment plate (27). The guide rail seat (22) is vertically fixed on the height adjustment plate (27). The alignment guide rail (21) is slidably installed in the guide rail seat (22) and vertically passes through the height adjustment plate (27). The alignment cylinder (20) is fixed on the height adjustment plate (27). One end of the alignment guide rail (21) is fixedly connected to the piston rod of the alignment cylinder (20) through the connecting rod (23). The other end of the alignment guide rail (21) is fixedly connected to the mounting rod (24). The connecting column (12) is fixed on the mounting rod (24).

6. The auxiliary device for circuit breaker testing as described in claim 5, characterized in that: A stabilizing block (28) is also fixed on the height adjustment plate (27), and a stabilizing rod (29) is vertically fixed on one side of each connecting column (12), and each stabilizing rod (29) is slidably connected to the stabilizing block (28).

7. The auxiliary device for circuit breaker testing as described in claim 1, characterized in that: The end of the connecting column (12) is provided with a detachable column head (30), which is fixedly connected to the connecting column (12) by bolts and can abut against the contacts of the circuit breaker.

Images