A circuit breaker switch repetitive opening and closing testing device

Abstract

The application discloses a kind of circuit breaker switch repeated opening and closing test device, comprising: test table, connecting seat, rotation buffer device, telescopic transmission shaft body, repeated pushing device, circuit breaker body, the test table bears test device;The connecting seat is arranged at the both sides of test table;The rotation buffer device is symmetrically distributed with two, is fixed on connecting seat;The telescopic transmission shaft body is connected with rotation buffer device;The repeated pushing device is symmetrically distributed with two, is arranged above test table, and is fixedly connected with rotation buffer device;The circuit breaker body is arranged between test table and connecting seat.Compared with prior art, the application buffers the handle of circuit breaker and limits speed, so that the handle of circuit breaker keeps appropriate speed to repeat opening and closing, and then tests whether circuit breaker can work normally and whether function meets the standard, to achieve mechanical test on circuit breaker, and under the action of repeated pushing device, the opening and closing speed of switch is controlled.

Description

Technical Field

[0001] This invention relates to the field of circuit breaker switch testing technology, and more specifically, to a circuit breaker switch repeated opening and closing test device. Background Technology

[0002] A circuit breaker is a switching device capable of closing, carrying, and interrupting current under normal or abnormal circuit conditions. During circuit breaker production, tests are conducted to ensure the accuracy of the rated characteristics. Mechanical testing involves repeatedly opening and closing the circuit breaker. The circuit breaker must close and open at an appropriate speed and complete its assigned work and functions without any faults. Currently, during mechanical testing of circuit breakers, the internal springs and inertia affect the opening and closing speed of the circuit breaker handle during repeated opening and closing, and also generate additional force on the handle. As the handle moves, the speed gradually increases. Repeated testing can easily damage the circuit breaker and the handle, leading to an unnecessary damage rate and increased production costs. Therefore, it is necessary to provide a circuit breaker switch repeated opening and closing test device to solve the problems mentioned in the background art. Summary of the Invention

[0003] To achieve the above objectives, the present invention provides the following technical solution: a circuit breaker switch repeated opening and closing test device, comprising:

[0004] The test stand supports the testing equipment.

[0005] Connecting brackets are located on both sides of the test bench;

[0006] Two rotating buffer devices are symmetrically distributed and fixed on the connecting seat;

[0007] The telescopic transmission shaft is connected to the rotation buffer device;

[0008] Two symmetrically distributed push devices are installed above the test platform and are fixedly connected to the rotation buffer device.

[0009] The circuit breaker body is located between the test bench and the connection socket.

[0010] Furthermore, preferably, the rotational buffer device includes:

[0011] Two fasteners are symmetrically distributed and fixed to the connecting seat;

[0012] A rotating shaft is rotatably mounted between fixed components;

[0013] The connecting plate is located between the fixing parts, at the end opposite to the rotating shaft, and is rotatably connected to the telescopic transmission shaft.

[0014] Two rotating plates are symmetrically distributed on both sides of the connecting plate, located between the fixing parts, and fixedly connected to the telescopic transmission shaft. The rotating plates are provided with two symmetrical protrusions.

[0015] A buffer spring connects the rotating shaft and the connecting plate, and the two sides of the connection between the buffer spring and the connecting plate are located between the protrusions on the rotating plate;

[0016] The fixing component is fixed to the inside of the two fixing parts and is fixedly connected to the reciprocating pushing device. In other words, when the device is repeatedly pushed to move the circuit breaker handle upwards to close the circuit, the telescopic transmission shaft rotates on the fixed part, causing the rotating plate to rotate clockwise along with the telescopic transmission shaft. Just as the circuit breaker handle is about to close, the handle's speed increases due to the influence of the internal spring of the circuit breaker and inertia. At this point, the lower protrusion of the rotating plate rotates to the connection point between the buffer spring and the connecting plate, causing the connecting plate to rotate and simultaneously stretching the buffer spring to cushion the handle until it closes. Conversely, when the device is repeatedly pushed to move the circuit breaker handle downwards to open the circuit, the telescopic transmission shaft rotates on the fixed part, causing the rotating plate to rotate counterclockwise along with the telescopic transmission shaft. When the circuit breaker handle is reset, the handle's speed increases due to the influence of the internal spring of the circuit breaker and inertia. At this point, the upper protrusion of the rotating plate rotates to the connection point between the buffer spring and the connecting plate, causing the connecting plate to rotate and simultaneously compressing the buffer spring to cushion the handle until it resets.

[0017] Furthermore, preferably, the fixing component includes:

[0018] The lifting plate is fixed to the fixing component;

[0019] A fixed shaft is slidably mounted on a fixed lifting plate at one end, and fixed to the side wall of the reciprocating pushing device at the other end. Under the action of the fixed lifting plate, the fixed shaft moves up and down, which in turn moves the reciprocating pushing device up and down, adjusting the distance between the reciprocating pushing device and the circuit breaker body so that the handle of the reciprocating pushing device and the circuit breaker body are in corresponding positions, and the handle is pushed.

[0020] Furthermore, preferably, the telescopic transmission shaft is equipped with a fixed clamp and a transmission assembly. The fixed clamp is rotatably mounted at one end of the telescopic transmission shaft and corresponds to the side of the circuit breaker body. The transmission assembly is mounted on the extended shaft of the telescopic transmission shaft and connected to the reciprocating pushing device. When the circuit breaker body is installed on the test bench, the telescopic transmission shafts extend from both sides, driving the fixed clamp to fix the circuit breaker body. When the circuit breaker body is tested for opening and closing, the telescopic transmission shaft rotates on the fixed clamp under the action of the transmission assembly, thereby buffering and limiting the rotation speed of the handle by driving the rotation buffer device.

[0021] Furthermore, preferably, the transmission assembly includes:

[0022] The connector is fixed to the extended shaft of the telescopic transmission shaft.

[0023] The connecting rod is hinged at one end to the connecting piece;

[0024] The mating surface is hinged to the other end of the connecting rod;

[0025] The connecting shaft is fixed to the mating surface and corresponds to the repetitive pushing device. In the initial state, the connecting rod drives the mating surface to mate with the repetitive pushing device, and the two are connected by the connecting shaft. Then, during the switch opening and closing test, the repetitive pushing device drives the mating surface to move through the connecting shaft, which in turn drives the telescopic transmission shaft to rotate on the fixed clamping block through the connecting rod, while simultaneously driving the rotation buffer device to provide cushioning.

[0026] Furthermore, preferably, the repetitive pushing device includes:

[0027] The semi-circular slide is located at the top center of the test platform, and its side is fixedly connected to the fixed shaft;

[0028] The clamping sliding assembly is slidably disposed within a semi-circular slide rail and corresponds to the handle of the circuit breaker body. Under the action of the internal drive mechanism of the clamping sliding assembly, the clamping sliding assembly reciprocates within the semi-circular slide rail, driving the handle of the circuit breaker body to perform closing and opening operations.

[0029] Furthermore, preferably, the clamping sliding assembly includes:

[0030] The movable rollers are set within the semi-circular slide rails.

[0031] The connector is connected to the central shaft of the movable roller, and its side corresponds to the connecting shaft on the mating surface;

[0032] The adjusting shaft is a telescopic structure and is fixedly connected to the connecting body;

[0033] The clamping assembly is fixedly connected to the extended end of the adjusting shaft. Under the action of the internal drive mechanism, the moving roller drives the clamping sliding assembly to move within the semi-circular slide, and the connecting body is fixed to the mating surface through the connecting shaft. Before the test, the adjusting shaft pushes the clamping assembly to clamp the handle of the circuit breaker body, so as to drive the handle to rotate and perform the opening and closing test.

[0034] Furthermore, preferably, the clamping assembly includes:

[0035] The controller is fixedly connected to the extended end of the adjusting shaft;

[0036] Two movable clamps are symmetrically distributed and slidably mounted on the controller.

[0037] The clamping rollers are positioned on the opposite side of the movable clamps. When the adjusting shaft moves the clamping assembly to engage with the handle of the circuit breaker body, the controller drives the movable clamps on both sides to clamp the handle. As the clamping sliding assembly rotates the handle, the clamping rollers gradually change the overlap between the movable clamps and the handle with different rotation angles, without disengaging from the handle. This ensures that the handle is not affected by external forces during rotation, making the testing process more stable.

[0038] Compared with the prior art, the beneficial effects of the present invention are:

[0039] In this invention, a rotating buffer device is used to buffer the force exerted by the internal spring during the rotation of the circuit breaker handle, allowing the circuit breaker handle to be repeatedly opened and closed at an appropriate speed. This tests whether the circuit breaker can work normally and whether its functions meet the standards, thus achieving a mechanical test of the circuit breaker. At the same time, the opening and closing speed of the circuit breaker is controlled by the repeated pushing device, and the speed of the circuit breaker handle is buffered and limited by the transmission of the telescopic transmission shaft. Attached Figure Description

[0040] Figure 1 A schematic diagram of the overall structure of a circuit breaker switch repeated opening and closing test device;

[0041] Figure 2 A schematic diagram of a rotating buffer device in a circuit breaker switch repeated opening and closing test device;

[0042] Figure 3 A schematic diagram of the telescopic transmission shaft structure in a circuit breaker switch repeated opening and closing test device;

[0043] Figure 4 A side view of a circuit breaker switch repeated opening and closing test device;

[0044] Figure 5 A schematic diagram of the repetitive pushing device in a circuit breaker switch repeated opening and closing test device;

[0045] In the diagram: 1. Test bench; 2. Connecting seat; 3. Rotation buffer device; 4. Telescopic transmission shaft; 5. Repeated pushing device; 6. Circuit breaker body; 31. Fixing component; 32. Rotating shaft; 33. Connecting plate; 34. Rotating plate; 35. Buffer spring; 36. Fixing assembly; 41. Fixing clamp; 42. Transmission assembly; 51. Semi-circular slide; 52. Clamping sliding assembly; 361. Fixing lifting plate; 362. Fixing shaft; 421. Connecting component; 422. Connecting rod; 423. Contact surface; 424. Connecting shaft; 521. Moving roller; 522. Connecting body; 523. Adjusting shaft; 524. Clamping assembly; 5241. Controller; 5242. Moving clamp; 5243. Clamping roller. Detailed Implementation

[0046] Please see Figures 1-5 In this embodiment of the invention, a circuit breaker switch repeated opening and closing test device includes:

[0047] Test stand 1, which carries the testing equipment;

[0048] Connecting seats 2 are located on both sides of the test bench 1;

[0049] Two rotating buffer devices 3 are symmetrically distributed and fixed on the connecting seat 2;

[0050] The telescopic transmission shaft 4 is connected to the rotation buffer device 3;

[0051] Two symmetrically distributed push devices 5 are repeatedly pushed and set above the test platform 1, and are fixedly connected to the rotation buffer device 3.

[0052] The circuit breaker body 6 is located between the test bench 1 and the connection base 2.

[0053] In this embodiment, the rotating buffer device 3 includes:

[0054] Two fasteners 31 are symmetrically distributed and fixed to the connecting seat 2;

[0055] The rotating shaft 32 is rotatably disposed between the fixed parts 31;

[0056] The connecting plate 33 is disposed between the fixing parts 31, located at the end opposite to the rotating shaft 32, and is rotatably connected to the telescopic transmission shaft 4.

[0057] Two rotating plates 34 are symmetrically distributed and set on both sides of the connecting plate 33, located between the fixing parts 31, and fixedly connected to the telescopic transmission shaft 4. The rotating plate 34 is provided with two symmetrical protrusions.

[0058] A buffer spring 35 connects the rotating shaft 32 and the connecting plate 33, and the two sides of the connection between the buffer spring 35 and the connecting plate 33 are located between the protrusions on the rotating plate 34.

[0059] The fixing component 36 is fixed inside the two fixing parts 31 and is fixedly connected to the reciprocating pushing device 5. That is, when the reciprocating pushing device 5 drives the handle of the circuit breaker body 6 to move upward to close the circuit, it drives the telescopic transmission shaft 4 to rotate on the fixing part 31, and drives the rotating plate 34 to rotate clockwise with the telescopic transmission shaft 4. When the circuit breaker handle is about to close the circuit, the handle speed increases due to the influence of the spring inside the circuit breaker body 6 and the action of inertia. At this time, the lower protrusion of the rotating plate 34 rotates to the connection point between the buffer spring 35 and the connecting plate 33, thereby driving the connecting plate 33 to rotate and stretching the buffer spring 35 to buffer the handle until it closes. Conversely, when the device 5 is repeatedly pushed to open the circuit breaker body 6, the telescopic transmission shaft 4 rotates on the fixed part 31, causing the rotating plate 34 to rotate counterclockwise along with the telescopic transmission shaft 4. When the circuit breaker handle is reset, the handle speed increases due to the influence of the internal spring of the circuit breaker body 6 and the action of inertia. At this time, the upper protrusion of the rotating plate 34 rotates to the connection point between the buffer spring 35 and the connecting plate 33, thereby driving the connecting plate 33 to rotate and compressing the buffer spring 35 to buffer the handle until the handle is reset.

[0060] In this embodiment, the fixing component 36 includes:

[0061] The lifting plate 361 is fixed on the fixing component 31;

[0062] A fixed shaft 362 is slidably mounted on a fixed lifting plate 361 at one end and fixed to the side wall of the repetitive pushing device 5 at the other end. Under the action of the fixed lifting plate 361, the fixed shaft 362 moves up and down, which in turn moves the repetitive pushing device 5 up and down, adjusting the distance between the repetitive pushing device 5 and the circuit breaker body 6 so that the handle of the repetitive pushing device 5 and the circuit breaker body 6 are in corresponding positions, and the handle is pushed.

[0063] In this embodiment, the telescopic transmission shaft 4 is provided with a fixed clamp 41 and a transmission assembly 42. The fixed clamp 41 is rotatably mounted on one end of the telescopic transmission shaft 4 and corresponds to the side of the circuit breaker body 6. The transmission assembly 42 is mounted on the extension shaft of the telescopic transmission shaft 4 and is connected to the repetitive pushing device 5. When the circuit breaker body 6 is installed on the test bench 1, the telescopic transmission shafts 4 extend from both sides, driving the fixed clamp 41 to fix the circuit breaker body 6. When the circuit breaker body 6 is tested for opening and closing, the telescopic transmission shaft 4 rotates on the fixed clamp 41 under the action of the transmission assembly 42, thereby driving the rotation buffer device 3 to buffer and limit the rotation speed of the handle.

[0064] In this embodiment, the transmission assembly 42 includes:

[0065] Connector 421 is fixed on the extended shaft of telescopic transmission shaft 4;

[0066] Link 422, one end of which is hinged to connector 421;

[0067] The mating surface 423 is hinged to the other end of the connecting rod 422;

[0068] The connecting shaft 424 is fixed on the mating surface 423 and corresponds to the repetitive pushing device 5. In the initial state, the connecting rod 422 drives the mating surface 423 to mat with the repetitive pushing device 5, and the two are connected by the connecting shaft 424. Then, during the switch opening and closing test, the repetitive pushing device 5 drives the mating surface 423 to move through the connecting shaft 424, and then drives the telescopic transmission shaft 4 to rotate on the fixed clamp 41 through the connecting rod 422, while driving the rotation buffer device 3 to buffer.

[0069] In this embodiment, the repeated pushing device 5 includes:

[0070] The semi-circular slide 51 is located at the top center of the test platform 1, and its side is fixedly connected to the fixed shaft 362;

[0071] The clamping sliding assembly 52 is slidably disposed within the semi-circular slide rail 51 and corresponds to the handle of the circuit breaker body 6. Under the action of the internal drive mechanism of the clamping sliding assembly 52, the clamping sliding assembly 52 reciprocates within the semi-circular slide rail 51, driving the handle of the circuit breaker body 6 to perform closing and opening operations.

[0072] In this embodiment, the clamping sliding component 52 includes:

[0073] The movable roller 521 is rolled within the semi-circular slide rail 51;

[0074] The connecting body 522 is connected to the central shaft of the movable roller 521, and its side corresponds to the connecting shaft 424 on the mating surface 423;

[0075] The adjusting shaft 523 is a telescopic structure and is fixedly connected to the connecting body 522;

[0076] The clamping assembly 524 is fixedly connected to the extended end of the adjusting shaft 523. Under the action of the internal drive mechanism, the moving roller 521 drives the clamping sliding assembly 52 to move within the semi-circular slide rail 51, and the connecting body 522 is fixed to the contact surface 423 through the connecting shaft 424. Before the test, the adjusting shaft 523 pushes the clamping assembly 524 to clamp the handle of the circuit breaker body 6, so as to drive the handle to rotate and perform the opening and closing test.

[0077] In this embodiment, the clamping assembly 524 includes:

[0078] The controller 5241 is fixedly connected to the extended end of the adjusting shaft 523;

[0079] Two movable clamps 5242 are symmetrically distributed and slidably mounted on the controller 5241;

[0080] The clamping roller 5243 is rolled on the opposite side of the movable clamp 5242. When the adjusting shaft 523 drives the clamping assembly 524 to engage with the handle of the circuit breaker body 6, the controller 5241 drives the movable clamps 5242 on both sides to clamp the handle. When the clamping sliding assembly 52 drives the handle to rotate, the clamping roller 5243 gradually changes the overlap between the movable clamp 5242 and the handle with different rotation angles, and does not disengage from the handle, so as to ensure that the handle is not affected by external forces during rotation, making the testing process more stable.

[0081] In practice, the circuit breaker body 6 is first installed on the test bench 1, so that the rotation center of the circuit breaker switch handle is at the same center as the telescopic transmission shaft 4. Then, the telescopic transmission shafts 4 extend from both sides, driving the fixing clamps 41 to fix the circuit breaker body 6. Next, the fixing lifting plate 361 drives the fixing shaft 362 to move up and down, and at the same time drives the repetitive pushing device 5 to move up and down. The distance between the repetitive pushing device 5 and the circuit breaker body 6 is adjusted so that the repetitive pushing device 5 and the handle of the circuit breaker body 6 are in corresponding positions. Then, the connecting rod 422 drives the contact surface. 423 is brought into contact with the clamping sliding assembly 52 of the repeatedly pushing device 5. The connecting body 522 and the contact surface 423 are connected by the connecting shaft 424. At the same time, the adjusting shaft 523 pushes the clamping assembly 524 so that the clamping assembly 524 clamps the handle of the circuit breaker body 6. Then, the internal drive mechanism of the clamping sliding assembly 52 drives the moving roller 521 to move the clamping sliding assembly 52 clockwise in the semi-circular slide 51, which drives the handle of the circuit breaker body 6 to move upward to close the circuit. This, in turn, drives the telescopic transmission shaft 4 to rotate on the fixed part 31, and drives the rotating plate 34 to follow the telescopic transmission shaft. The circuit breaker body 4 rotates clockwise. Just as the circuit breaker handle is about to close, influenced by the internal spring of the circuit breaker body 6 and due to inertia, the handle's rotation speed increases. At this time, the lower protrusion of the rotating plate 34 rotates to the connection point between the buffer spring 35 and the connecting plate 33, thereby driving the connecting plate 33 to rotate. Simultaneously, the buffer spring 35 is stretched, buffering the handle until it closes. After real-time monitoring of the circuit breaker body 6's operating status, the moving roller 521 drives the clamping sliding assembly 52 to move counterclockwise within the semi-circular slide rail 51, causing the circuit breaker body 6's handle to open upwards. This causes the telescopic transmission shaft 4 to rotate on the fixed part 31, and the rotating plate 34 to rotate counterclockwise following the telescopic transmission shaft 4. When the circuit breaker handle is opened and reset, the handle speed increases due to the influence of the spring inside the circuit breaker body 6 and the inertia. At this time, the upper protrusion of the rotating plate 34 rotates to the connection point between the buffer spring 35 and the connecting plate 33, thereby driving the connecting plate 33 to rotate and compressing the buffer spring 35 to buffer the handle until the handle is reset. The opening and closing are repeated multiple times, and the working status of the circuit breaker body 6 is recorded to complete the test.

[0082] The above description is merely a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A circuit breaker switch repeated opening and closing test device, characterized in that: include: Test bench (1), which carries the test equipment; Connecting seats (2) are set on both sides of the test bench (1); Two rotating buffer devices (3) are symmetrically distributed and fixed on the connecting seat (2); The telescopic transmission shaft (4) is connected to the rotation buffer device (3); Two symmetrically distributed push devices (5) are provided, located above the test platform (1) and fixedly connected to the rotating buffer device (3); The circuit breaker body (6) is located between the test bench (1) and the connecting seat (2); The rotating buffer device (3) includes: Two fasteners (31) are symmetrically distributed and fixed on the connecting seat (2); A rotating shaft (32) is rotatably disposed between the fixed parts (31); The connecting plate (33) is set between the fixing parts (31), located at the end opposite to the rotating shaft (32), and is rotatably connected to the telescopic transmission shaft (4); Two rotating plates (34) are symmetrically distributed and set on both sides of the connecting plate (33), located between the fixing parts (31), and rotatably connected to the telescopic transmission shaft (4). The rotating plate (34) is provided with two symmetrical protrusions. A buffer spring (35) connects the rotating shaft (32) and the connecting plate (33), and the two sides of the connection between the buffer spring (35) and the connecting plate (33) are located between the protrusions on the rotating plate (34); The fixing component (36) is fixed inside the two fixing parts (31) and is fixedly connected to the reciprocating pushing device (5).

2. The circuit breaker switch repeated opening and closing test device according to claim 1, characterized in that: The fixing component (36) includes: The fixed lifting plate (361) is fixed on the fixing part (31); The fixed shaft (362) is slidably mounted on the fixed lifting plate (361) at one end and fixed on the side wall of the repeated pushing device (5) at the other end.

3. The circuit breaker switch repeated opening and closing test device according to claim 1, characterized in that: The telescopic transmission shaft (4) is provided with a fixed clamp (41) and a transmission assembly (42). The fixed clamp (41) is rotatably disposed at one end of the telescopic transmission shaft (4) and corresponds to the side of the circuit breaker body (6). The transmission assembly (42) is disposed on the extension shaft of the telescopic transmission shaft (4) and is connected to the repetitive pushing device (5).

4. The circuit breaker switch repeated opening and closing test device according to claim 3, characterized in that: The transmission assembly (42) includes: The connector (421) is fixed on the extended shaft of the telescopic transmission shaft (4); The connecting rod (422) is hinged at one end to the connecting piece (421); The mating surface (423) is hinged to the other end of the connecting rod (422); The connecting shaft (424) is fixed on the mating surface (423) and corresponds to the repeated pushing device (5).

5. The circuit breaker switch repeated opening and closing test device according to claim 1, characterized in that: The repetitive pushing device (5) includes: The semi-circular slide (51) is located at the top center of the test platform (1) and its side is fixedly connected to the fixed shaft (362); The clamping sliding assembly (52) is slidably disposed within the semi-circular slide rail (51) and corresponds to the handle of the circuit breaker body (6).

6. The circuit breaker switch repeated opening and closing test device according to claim 5, characterized in that: The clamping sliding assembly (52) includes: The movable roller (521) is set to roll within the semi-circular slide (51); The connecting body (522) is connected to the central shaft of the movable roller (521), and its side corresponds to the connecting shaft (424) on the mating surface (423); The adjusting shaft (523) is a telescopic structure and is fixedly connected to the connecting body (522); The clamping assembly (524) is fixedly connected to the extended end of the adjusting shaft (523).

7. The circuit breaker switch repeated opening and closing test device according to claim 6, characterized in that: The clamping assembly (524) includes: The controller (5241) is fixedly connected to the extended end of the adjusting shaft (523); Two movable clamps (5242) are symmetrically distributed and slidably mounted on the controller (5241); The clamping roller (5243) is set on the opposite side of the movable clamp (5242).

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