Circuit breaker testing device and method

Abstract

The invention discloses a circuit breaker testing device and method, and belongs to the technical field of circuit breakers, the circuit breaker testing device comprises a machine body, a limiting device and a dustproof device, a connecting hole is formed in one side of the machine body, one end of a connecting wire is inserted into the connecting hole, the other end of the connecting wire is connected with a circuit breaker, and the limiting device is arranged at the position, corresponding to the connecting hole, of the outer wall of the machine body; heat dissipation holes are formed in the other side face of the machine body, and a dustproof device is arranged at the position, corresponding to the heat dissipation holes, of the outer wall of the machine body and used for preventing dust from entering; the limiting device comprises a first clamping block, a second clamping block and an auxiliary limiting structure, the first clamping block and the second clamping block are symmetrically arranged corresponding to the position of the connecting hole, the connecting line is preliminarily clamped and fixed by moving the second clamping block, and the auxiliary limiting structure further clamps and fixes the connecting line in the moving process. The connecting line and the machine body are fastened and connected through double fixation, the connecting stability of the connecting line and the connecting hole is improved, and meanwhile, external dust and impurities falling into the heat dissipation holes are reduced through the dustproof device.

Description

Technical Field

[0001] This invention belongs to the field of circuit breaker technology, specifically relating to a circuit breaker testing device and method. Background Technology

[0002] A circuit breaker is a switching device that can close, carry, and interrupt current under normal circuit conditions and close, carry, and interrupt current under abnormal circuit conditions within a specified time. In order to ensure the working quality of the circuit breaker, it is often necessary to use a circuit breaker testing device to test parameters such as the opening and closing time of the circuit breaker.

[0003] Existing circuit breaker testing equipment typically involves connecting a connecting wire to the circuit breaker's break signal input port and closing / opening control signal output port. The other end of the connecting wire is then inserted into a connection hole on the device. A sensor is then installed in the circuit of the circuit breaker under test, and the device is started to perform the test. The sensor monitors the current changes in the circuit in real time and transmits the data to the device, which processes and analyzes this data to derive the circuit breaker's performance parameters.

[0004] However, during testing, personnel may accidentally drag the connecting wire, causing it to loosen or even separate from the machine body, resulting in a break in the current and affecting the efficiency and accuracy of circuit breaker performance testing. Summary of the Invention

[0005] To address the shortcomings of existing technologies, this invention proposes a circuit breaker testing device and method. By setting a limiting device to restrict and reinforce the connecting wire, the risk of personnel accidentally dragging the connecting wire during testing operations, causing it to separate from the connection hole and break the current connection, thus affecting the accuracy of circuit breaker testing, is reduced. This improves the connection stability of the connecting wire.

[0006] This invention provides a circuit breaker testing device and method.

[0007] The present invention adopts the following technical solution.

[0008] The first aspect of the present invention discloses a circuit breaker testing device, comprising: a body for circuit breaker testing, a limiting device, and a dustproof device. A connection hole is provided on one side of the body, one end of a connecting wire is inserted into the connection hole, and the other end is connected to the circuit breaker. A limiting device is provided on the outer wall of the body corresponding to the position of the connection hole for positioning and fixing the connecting wire. A heat dissipation hole is provided on the other side of the body, and a dustproof device is provided on the outer wall of the body corresponding to the position of the heat dissipation hole for preventing dust from entering.

[0009] The limiting device includes a first clamping block and a second clamping block symmetrically arranged at the corresponding connection hole positions, as well as an auxiliary limiting structure. The connecting line is initially clamped and fixed by moving the second clamping block, and the connecting line is further clamped and fixed by the auxiliary limiting structure during the movement.

[0010] Preferably, the limiting device further includes: a rectangular frame, a connecting plate and a movable plate. The rectangular frame is provided with a connecting plate inside. Multiple first clamping blocks are provided on both sides of the connecting plate corresponding to the connecting hole positions. A movable plate is provided on the inner wall of the rectangular frame corresponding to the positions of the first clamping blocks. Multiple second clamping blocks are provided on the side of the movable plate facing the first clamping blocks. A rectangular hole is opened on the rear side of the rectangular frame and a limiting groove is opened on the front side.

[0011] Preferably, the limiting device further includes: a round hole block and a bidirectional screw rod, one end of the round hole block passes through the rectangular hole and is fixedly connected to the connecting plate, the inner wall of the round hole block is rotatably connected to the bidirectional screw rod, the movable plate is provided with a screw hole block at one end near the rectangular hole and a limiting block at the other end, the screw hole block passes through the rectangular hole and is sleeved on both ends of the bidirectional screw rod, and the limiting block passes through the limiting groove and is slidably connected to the rectangular frame.

[0012] By rotating the bidirectional screw, the screw hole block drives the second clamping block on the two moving plates to move towards the first clamping block until the first and second clamping blocks initially clamp and fix the connecting line.

[0013] Preferably, the limiting block has a slot on the side away from the first clamping block, and the connecting line is further fixed by tightening the slot.

[0014] Preferably, the dustproof device includes: a positioning frame, a filter plate, and a reinforcing block. The positioning frame has a positioning groove on one side and a reinforcing block is symmetrically arranged on the other side. One end of the reinforcing block is fixed to the outer wall of the machine body. The filter plate is inserted into the inside of the positioning frame through the positioning groove to cover the heat dissipation holes. A baffle is provided on the side of the filter plate away from the positioning frame, and auxiliary plates are provided at both ends of the baffle.

[0015] Preferably, the auxiliary limiting structure includes an adjustable limiting structure and a fixed limiting structure. The fixed limiting structure includes an anti-slip strip. Anti-slip strips are provided on the facing sides of both the first clamping block and the second clamping block to improve friction. The anti-slip strip on the second clamping block can be replaced with an adjustable limiting structure to further clamp and fix the connecting line.

[0016] Preferably, the adjustable limiting structure includes: a pad, a telescopic rubber block, a spring, and a pushing mechanism. The second clamping block has a cavity inside, and a pad is placed inside the cavity. The second clamping block has multiple connecting openings on the side facing the first clamping block. One end of the telescopic rubber block passes through the connecting opening and connects to the pad. The pad is provided with multiple springs on one side of the telescopic rubber block and abuts against the pushing mechanism on the other side. One end of the spring is connected to the pad and the other end is connected to the inner wall of the second clamping block. The pushing mechanism pushes the pad to cause the telescopic rubber block to extend out of the connecting opening and clamp and fix the connecting line. At the same time, the pad is pressured under the elastic force of the spring, causing the telescopic rubber block to further clamp and fix the connecting line.

[0017] Preferably, the pushing mechanism includes: a pushing rod, a lever frame, and a support point protrusion. Multiple pushing rods are symmetrically arranged in the cavity along the vertical direction. One end of the pushing rod is fixed and the other end is connected to the lever frame. The other side of the lever frame abuts against the pad. The upper and lower surfaces of the lever frame are connected to the inner wall of the cavity through the support point protrusion.

[0018] Preferably, the lever frame includes: a push roller, a connecting rod, and a connecting piece. The outer peripheral surface of the connecting rod is connected to one end of the push rod, and the upper and lower ends are connected to one end of the connecting piece. The other end of the connecting piece is connected to the push roller. The push roller abuts against the pad. A strip-shaped opening is provided on the connecting piece between the push roller and the connecting rod. One end of the support point protrusion passes through the strip-shaped opening and is fixed to the inner wall of the cavity.

[0019] When the second clamping block moves toward the first clamping block, the connecting rod is pulled by the push rod, causing the lever frame to rotate around the support point. The push roller pushes the pad to make the telescopic rubber block extend further from the connecting opening, clamping and fixing the connecting line.

[0020] A second aspect of this invention discloses a circuit breaker testing method, based on the aforementioned circuit breaker testing device, comprising the following steps:

[0021] Multiple connecting wires are connected at one end to the circuit breaker and the other end is inserted into the connection hole;

[0022] The first and second clamping blocks are clamped together to secure the connecting line by moving the second clamping block.

[0023] During the movement of the second clamping block, the auxiliary limiting structure further clamps and fixes the connecting line;

[0024] The circuit breaker is tested and the data is transmitted to the machine for processing to obtain the circuit breaker's performance parameters.

[0025] The beneficial effects of this invention are that, compared with the prior art,

[0026] This invention uses a limiting device to fix the connecting wire. On one hand, the movement of the second clamping block initially clamps and fixes the connecting wire; on the other hand, the auxiliary limiting structure further limits and fixes the connecting wire. This double fixation securely connects the connecting wire and the machine body, preventing the connecting wire from loosening or even detaching from the machine body during testing, which could affect the testing efficiency and accuracy of the circuit breaker. This improves the connection stability between the connecting wire and the connecting hole. Simultaneously, this invention uses a dustproof device to ensure the filter plate fully covers the heat dissipation holes, thereby intercepting external dust and impurities. This achieves dust protection for the heat dissipation holes, reducing the accumulation of external dust and impurities inside the holes, which could cause blockages and affect the heat dissipation efficiency of the machine body, thus improving the cleanliness of the inside of the heat dissipation holes.

[0027] The auxiliary limiting structure of the present invention can, on the one hand, increase the friction force by fixing the limiting structure to further limit and fix the connecting line, and on the other hand, it can also extend the telescopic rubber block to clamp and fix the connecting line during the movement of the second clamping block by the adjustable limiting structure. At the same time, under the elastic force of the spring, the telescopic rubber block is subjected to pressure to further clamp and fix the connecting line, which greatly improves the anti-slip and clamping effect. Attached Figure Description

[0028] Figure 1 This is a structural diagram of the body of the present invention;

[0029] Figure 2 This is a first structural diagram of the limiting device of the present invention;

[0030] Figure 3 This is a second structural diagram of the limiting device of the present invention;

[0031] Figure 4 This is a structural diagram of the dustproof device of the present invention;

[0032] Figure 5 This is a structural diagram of the adjustable limiting structure of the present invention;

[0033] Figure 6 This is a first structural diagram of the pad of the present invention;

[0034] Figure 7 This is a first structural diagram of the actuation mechanism of the present invention;

[0035] Figure 8 This is a second structural diagram of the actuating mechanism of the present invention;

[0036] Figure 9 This is a top view of the adjustable limiting structure of the present invention;

[0037] In the diagram: 1. Body; 2. Display screen; 3. Emergency stop button; 4. Connecting hole; 5. Limiting device; 51. Rectangular frame; 52. Rectangular hole; 53. Round hole block; 54. First clamping block; 55. Anti-slip strip; 56. Limiting groove; 57. Bidirectional screw; 58. Screw hole block; 59. Second clamping block; 510. Limiting block; 511. Rubber pad; 512. Tightening block; 513. Connecting opening; 514. Telescopic rubber block; 515 516. Push rod; 517. Lever frame; 518. Push roller; 519. Support point protrusion; 520. Strip opening; 521. Slot; 522. Pad; 523. Connecting plate; 524. Moving plate; 525. Cavity; 526. Connecting rod; 527. Connecting piece; 6. Heat dissipation hole; 78. Dustproof device; 79. Positioning frame; 70. Filter plate; 71. Baffle; 72. Auxiliary plate; 73. Reinforcing block; 74. Positioning groove. Detailed Implementation

[0038] To make the objectives, technical solutions, and advantages of this invention clearer, the technical solutions of this invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of this invention. The embodiments described in this application are merely some embodiments of this invention, and not all embodiments. Based on the spirit of this invention, other embodiments obtained by those skilled in the art without creative effort are all within the protection scope of this invention.

[0039] In the description of this invention, it should be understood that the terms "center," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0040] like Figures 1-9 As shown, Embodiment 1 of the present invention discloses a circuit breaker testing device. The testing device includes: a body 1 for circuit breaker testing, a limiting device 5, and a dustproof device 7. A connection hole 4 is provided on one side of the body 1 for connecting to a connecting wire. A limiting device 5 is provided on the outer wall of the body 1 at the position corresponding to the connection hole 4 to prevent the connecting wire from detaching from the connection hole. A heat dissipation hole 6 is provided on the other side of the body 1. A dustproof device 7 is provided on the outer wall of the body 1 at the position corresponding to the heat dissipation hole 6 to prevent dust from entering from the heat dissipation hole 6.

[0041] The limiting device 5 includes a first clamping block 54 and a second clamping block 59 symmetrically arranged at the corresponding positions of the connecting hole 4, and an auxiliary limiting structure. The connecting line is initially clamped and fixed by moving the second clamping block 59, and the connecting line is further clamped and fixed by the auxiliary limiting structure during the movement.

[0042] like Figure 1 As shown, the machine body 1 has a connection hole 4 and a display screen 2 and an emergency stop button on one side.

[0043] like Figure 2 As shown, the limiting device 5 includes: a rectangular frame 51, a movable plate 523, a first clamping block 54, and a second clamping block 59. The rectangular frame 51 is provided with a connecting plate 522 inside. The rectangular frame 51 is provided with multiple connecting holes 4 on both sides of the connecting plate 522. Multiple first clamping blocks 54 are symmetrically arranged on the left and right sides of the connecting plate 522 corresponding to the connecting holes 4. The movable plate 523 is symmetrically arranged on the left and right inner walls of the rectangular frame 51 corresponding to the positions of the first clamping blocks 54.

[0044] like Figure 2 and Figure 3 As shown, the rectangular frame 51 has a rectangular hole 52 on its rear outer wall and a limiting groove 56 on its front outer wall. One end of the round hole block 53 passes through the rectangular hole 52 and is fixedly connected to the connecting plate 522. The inner wall of the round hole block 53 is rotatably connected to the bidirectional screw 57. The threads on the surface of the bidirectional screw 57 are arranged in opposite symmetrical patterns. The movable plate 523 has a screw hole block 58 at one end near the rectangular hole 52 and a limiting block 510 at the other end. The screw hole block 58 passes through the rectangular hole 52 and is threaded onto both ends of the bidirectional screw 57. The limiting block 510 passes through the limiting groove 56 and is slidably connected to the rectangular frame 51. The limiting block 510 is used to ensure the stable movement of the movable plate 523 under the drive of the bidirectional screw 57, reduce the shaking of the movable plate 523 during movement, and improve the stability of the limiting device 5.

[0045] The movable plate 523 is provided with a plurality of second clamping blocks 59 on the side facing the first clamping block 54.

[0046] In a specific embodiment, the connecting wire is inserted into the connecting hole 4, and the connecting wire is located between the first clamping block 54 and the second clamping block 59. The bidirectional screw 57 is rotated, and the bidirectional screw 57 drives the second clamping block 59 on the moving plates 523 on both sides to move towards the first clamping block 54 through the screw hole block 58, until the first clamping block 54 and the second clamping block 59 squeeze and clamp the connecting wire, thereby achieving the limiting and reinforcement of the connecting wire. This prevents the connecting wire from being subjected to external force impact during the test operation and causing loosening at the insertion point of the connecting hole 4, which would cause the current to be disconnected and affect the detection efficiency and accuracy of the circuit breaker. This improves the connection stability between the connecting wire and the connecting hole 4.

[0047] One end of the bidirectional screw 57 is provided with a screw block 512. The surface of the screw block 512 is provided with multiple anti-slip protrusions, which facilitates the convenient rotation of the bidirectional screw 57.

[0048] like Figure 3 As shown, the two movable plates 523 are provided with multiple rubber pads 511 on the side away from each other. The multiple rubber pads 511 are symmetrically arranged at equal distances. The rubber pads 511 can block the movable plates 523 during the movement process, reducing the collision and wear between the movable plates 523 and the inner wall of the rectangular frame 51 during the movement.

[0049] like Figure 4 As shown, the dustproof device 7 includes: a positioning frame 71, a filter plate 72, and a reinforcing block 75. The positioning frame 71 is a hollow rectangular frame structure. One side of the positioning frame 71 is provided with a through positioning groove 76, and the other side is provided with a reinforcing block 75. One end of the reinforcing block 75 is fixed to the outer wall of the body 1 so that the positioning frame 71 is located at the heat dissipation hole 6. The filter plate 72 is inserted into the inside of the positioning frame 71 through the positioning groove 76. The size and shape of the filter plate 72 are adapted to the size and shape of the inner wall of the positioning frame 71. A baffle 73 is fixedly connected to the side of the filter plate 72 away from the positioning frame 71. The size of the baffle 73 is larger than the size of the positioning groove 76.

[0050] The baffle 73 is fixedly connected to the left and right sides by auxiliary plates 74. The surface of the auxiliary plates 74 is rectangular, which facilitates the movement of the baffle 73 along the slot 76 by the auxiliary plates 74, thereby improving the convenience of inserting and removing the filter plate 72.

[0051] Preferably, the reinforcing block 75 can increase the connection strength between the locking frame 71 and the body 1, and reduce the possibility of the locking frame 71 separating from the body 1 during use.

[0052] In a specific embodiment, the baffle 73 is moved by the auxiliary plate 74, thereby driving the filter plate 72 to move along the slot 76. When the filter plate 72 is fully inserted into the slot frame 71, the side of the baffle 73 fits against the outer wall of the slot frame 71, facilitating the insertion and removal of the filter plate 72. When the filter plate 72 is fully inserted into the slot frame 71, it will completely cover the heat dissipation hole 6 and intercept external dust and impurities, achieving dust protection for the heat dissipation hole 6. This prevents external dust and impurities from entering the body 1 through the heat dissipation hole 6 and affecting the test, preventing the heat dissipation hole 6 from becoming blocked and affecting the heat dissipation efficiency of the body 1, and improving the cleanliness of the heat dissipation hole 6.

[0053] like Figure 5 As shown, the limiting block 510 has a slot 520 on the side away from the first clamping block 54. By tying the rope to the slot 520 position of the two second clamping blocks 59, the clamping force of the clamping block on the connecting line is further improved.

[0054] The auxiliary limiting structure includes an adjustable limiting structure and a fixed limiting structure. The fixed limiting structure includes an anti-slip strip 55. Anti-slip strips 55 are provided on the facing sides of the first clamping block 54 and the second clamping block 59 to increase friction and improve the clamping ability of the clamping blocks on the connecting wire. The anti-slip strip 55 on the second clamping block 59 can be replaced with an adjustable limiting structure to further clamp and fix the connecting wire.

[0055] like Figures 5-9 As shown, the adjustable limiting structure includes: a pad 521, a telescopic rubber block 514, a spring 522, and a pushing mechanism. The second clamping block 59 has a cavity 524 inside, and the pad 521 is placed inside the cavity 524. The second clamping block 59 has multiple connecting holes 513 on the side facing the first clamping block 54. One end of the telescopic rubber block 514 passes through the connecting hole 513 and connects to the pad 521. The pad 521 is provided with multiple springs 522 on one side of the telescopic rubber block 514 and abuts against the pushing mechanism on the other side. One end of the spring 522 is connected to the pad 521 and the other end is connected to the inner wall of the second clamping block 59. The pushing mechanism pushes the pad 521 to drive the telescopic rubber block 514 to extend out of the connecting hole 513 and clamp and fix the connecting line. At the same time, under the elastic force of the spring 522, the pad 521 is subjected to pressure, which makes the telescopic rubber block 514 further clamp and fix the connecting line.

[0056] like Figure 7 , Figure 8 and Figure 9 As shown, the pushing mechanism includes: a pushing rod 515, a lever frame 516, and a support point protrusion 518. Multiple pushing rods 515 are symmetrically arranged in the vertical direction inside the cavity 524. One end of the pushing rod 515 is fixed to the outer wall of the rectangular frame 51 and the other end is screwed to the lever frame 516. The other side of the lever frame 516 abuts against the pad 521. The upper and lower surfaces of the lever frame 516 are connected to the inner wall of the cavity 524 through the support point protrusion 518.

[0057] The lever frame 516 includes a push roller 514, a connecting rod 525, and a connecting piece 526. The outer wall of the connecting rod 525 is connected to one end of the push rod 515, and the upper and lower ends of the connecting rod 525 are connected to one end of the connecting piece 526. The other end of the connecting piece 526 is connected to the push roller 514. The push roller 514 abuts against the pad 521. The connecting piece 526 has a strip-shaped opening 519 located between the push roller 514 and the connecting rod 526. One end of the support point protrusion 518 passes through the strip-shaped opening 519 and is fixed to the inner wall of the cavity 524, so that the lever frame 516 and the support point protrusion 518 can rotate and slide relative to each other, avoiding the lever frame 516 from being stuck due to space limitations when rotating to push the pad 521.

[0058] In a specific embodiment, when the moving plate 523 drives the second clamping block 59 to approach the first clamping block 54, the connecting rod 525 on the lever frame 516 is pulled by the push rod 515, causing the lever frame 516 to rotate around the support point protrusion 518. The push roller 514 moves towards the pad 521 to squeeze the pad 521, causing the telescopic rubber block 514 to extend further from the connecting opening 513, clamping and fixing the connecting line, improving the anti-slip and clamping effect. At the same time, under the elastic force of the spring 522, the pad 521 is pressured, causing the telescopic rubber block 514 to further clamp and fix the connecting line.

[0059] The working principle of this invention is as follows: one end of multiple connecting wires is connected to a circuit breaker, and the other end is inserted into the connecting hole 4 on the body 1, so that the connecting wires are located between the first clamping block 54 and the second clamping block 59. Rotating the screw block 512 drives the bidirectional screw 57 to rotate, which drives the second clamping block 59 to move towards the first clamping block 54 through the screw hole block 58, until the second clamping block 59 and the first clamping block 54 squeeze the connecting wires, thus initially clamping and fixing the connecting wires; during the movement of the second clamping block 59, the push rod 515 fixed to the rectangular frame 51 will pull the lever. The connecting rod 525 on the frame 516 causes the lever frame 516 to rotate around the support point protrusion 518, causing the push roller 517 to push the telescopic rubber block 514 on the pad 521 to extend further from the connecting opening 513, clamping and fixing the connecting line. At the same time, under the elastic force of the spring 522, the pad 521 is subjected to pressure, causing the telescopic rubber block 514 to further clamp and fix the connecting line, and the rope is tied in the slot 520 on the limiting block 510, so that the screw hole block 58 is clamped by force, further improving the limiting and reinforcement effect of the connecting line.

[0060] At the same time, by moving the baffle 73, the filter plate 72 is inserted into the slot 76. When the filter plate 72 is fully inserted into the slot frame 71, the baffle 73 is in contact with the surface of the slot frame 71, and the filter plate 72 completely covers the heat dissipation hole 6, thus intercepting external dust and impurities and achieving dust protection for the heat dissipation hole 6.

[0061] The circuit breaker is tested by starting the machine body 1 and transmitting the data to the machine body 1. The machine body 1 processes and analyzes the data to obtain the performance parameters of the circuit breaker and displays the data on the display screen 2. If the circuit breaker anti-pumping circuit fails during the test, the test can be stopped by pressing the emergency stop button 3 to reduce the damage to the circuit breaker caused by the circuit breaker tripping.

[0062] Embodiment 2 of the present invention discloses a circuit breaker testing method, comprising the following steps:

[0063] Step 1: Connect one end of the connecting wire to the circuit breaker, and insert the other end into connection hole 4;

[0064] Step 2: Move the second clamping block 59 to clamp and fix the connecting line with the first clamping block 54 and the second clamping block 59.

[0065] Step 3: During the movement of the second clamping block 59, the auxiliary limiting structure further clamps and fixes the connecting wire;

[0066] Step 4: The circuit breaker is tested and the data is transmitted to the main unit 1 for processing.

[0067] The beneficial effects of this invention are that, compared with the prior art,

[0068] This invention uses a limiting device to fix the connecting wire. On one hand, the movement of the second clamping block initially clamps and fixes the connecting wire; on the other hand, the auxiliary limiting structure further limits and fixes the connecting wire. This double fixation securely connects the connecting wire and the machine body, preventing the connecting wire from loosening or even detaching from the machine body during testing, which could affect the testing efficiency and accuracy of the circuit breaker. This improves the connection stability between the connecting wire and the connecting hole. Simultaneously, this invention uses a dustproof device to ensure the filter plate fully covers the heat dissipation holes, thereby intercepting external dust and impurities. This achieves dust protection for the heat dissipation holes, reducing the accumulation of external dust and impurities inside the holes, which could cause blockages and affect the heat dissipation efficiency of the machine body, thus improving the cleanliness of the inside of the heat dissipation holes.

[0069] The auxiliary limiting structure of the present invention can, on the one hand, increase the friction force by fixing the limiting structure to further limit and fix the connecting line, and on the other hand, it can also extend the telescopic rubber block to clamp and fix the connecting line during the movement of the second clamping block by the adjustable limiting structure. At the same time, under the elastic force of the spring, the telescopic rubber block is subjected to pressure to further clamp and fix the connecting line, which greatly improves the anti-slip and clamping effect.

[0070] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and not to limit it. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art should understand that modifications or equivalent substitutions can still be made to the specific implementation of the present invention. Any modifications or equivalent substitutions that do not depart from the spirit and scope of the present invention should be covered within the protection scope of the claims of the present invention.

Claims

1. A circuit breaker testing device, comprising: The body (1), limiting device (5), and dustproof device (7) for circuit breaker testing are characterized by: The machine body (1) has a connection hole (4) on one side. One end of the connecting wire is inserted into the connection hole (4) and the other end is connected to the circuit breaker. A limiting device (5) is set on the outer wall of the machine body (1) at the position corresponding to the connection hole (4) to fix the connecting wire. A heat dissipation hole (6) is set on the other side of the machine body (1). A dustproof device (7) is set on the outer wall of the machine body (1) at the position corresponding to the heat dissipation hole (6) to prevent dust from entering. The limiting device (5) includes a first clamping block (54) and a second clamping block (59) symmetrically arranged at the corresponding connection hole (4) position, as well as an auxiliary limiting structure. The connecting line is initially clamped and fixed by moving the second clamping block (59), and the auxiliary limiting structure further clamps and fixes the connecting line during the movement.

2. The circuit breaker testing device according to claim 1, characterized in that: The limiting device (5) further includes: a rectangular frame (51), a connecting plate (522) and a moving plate (523). The rectangular frame (51) is provided with a connecting plate (522) inside. Multiple first clamping blocks (54) are provided on both sides of the connecting plate (522) corresponding to the positions of the connecting holes (4). The inner wall of the rectangular frame (51) is provided with a moving plate (523) corresponding to the positions of the first clamping blocks (54). Multiple second clamping blocks (59) are provided on the side of the moving plate (523) facing the first clamping blocks (54). A rectangular hole (52) is opened on the rear side of the rectangular frame (51) and a limiting groove (56) is opened on the front side.

3. The circuit breaker testing device according to claim 2, characterized in that: The limiting device (5) further includes: a round hole block (53) and a bidirectional screw (57). One end of the round hole block (53) passes through the rectangular hole (52) and is fixedly connected to the connecting plate (522). The inner wall of the round hole block (53) and the bidirectional screw (57) are rotatably connected. The moving plate (523) is provided with a screw hole block (58) at one end near the rectangular hole (52) and a limiting block (510) at the other end. The screw hole block (58) passes through the rectangular hole (52) and is sleeved on both ends of the bidirectional screw (57). The limiting block (510) passes through the limiting groove (56) and is slidably connected to the rectangular frame (51). By rotating the bidirectional screw (57), the screw hole block (58) drives the second clamping block (59) on the two moving plates (523) to move towards the first clamping block (54) until the first clamping block (54) and the second clamping block (59) initially clamp and fix the connecting line.

4. The circuit breaker testing device according to claim 3, characterized in that: The limiting block (510) has a slot (520) on the side away from the first clamping block (54), and the connecting line is further fixed by tightening the slot (520).

5. The circuit breaker testing device according to claim 1, characterized in that: The dustproof device (7) includes: a positioning frame (71), a filter plate (72) and a reinforcing block (75). The positioning frame (71) has a positioning groove (76) on one side and a reinforcing block (75) symmetrically arranged on the other side. One end of the reinforcing block (75) is fixed to the outer wall of the machine body (1). The filter plate (72) is inserted into the inside of the positioning frame (71) through the positioning groove (76) to cover the heat dissipation hole (6). A baffle (73) is arranged on the side of the filter plate (72) away from the positioning frame (71). Auxiliary plates (74) are arranged at both ends of the baffle (73).

6. The circuit breaker testing device according to claim 1, characterized in that: The auxiliary limiting structure includes an adjustable limiting structure and a fixed limiting structure. The fixed limiting structure includes an anti-slip strip (55). Anti-slip strips (55) are provided on the facing sides of the first clamping block (54) and the second clamping block (59) to improve friction. The anti-slip strip (55) on the second clamping block (59) can be replaced with an adjustable limiting structure to further clamp and fix the connecting line.

7. The circuit breaker testing device according to claim 6, characterized in that: The adjustable limiting structure includes: a pad (521), a telescopic rubber block (514), a spring (522), and a pushing mechanism. The second clamping block (59) has a cavity (524) inside, and the pad (521) is provided inside the cavity (524). The second clamping block (59) has multiple connecting holes (513) on the side facing the first clamping block (54). One end of the telescopic rubber block (514) passes through the connecting hole (513) and connects to the pad (521). The pad (521) is provided with a telescopic rubber block. The rubber block (514) has multiple springs (522) on one side and abuts against the pushing mechanism on the other side. One end of the spring (522) is connected to the pad (521) and the other end is connected to the inner wall of the second clamping block (59). The pushing mechanism pushes the pad (521) to drive the telescopic rubber block (514) to extend out from the connection opening (513) and clamp and fix the connecting line. At the same time, under the elastic force of the spring (522), the pad (521) is subjected to pressure, causing the telescopic rubber block (514) to further clamp and fix the connecting line.

8. The circuit breaker testing device according to claim 7, characterized in that: The pushing mechanism includes: a pushing rod (515), a lever frame (516), and a support point protrusion (518). Multiple pushing rods (515) are symmetrically arranged in the cavity (524) along the vertical direction. One end of the pushing rod (515) is fixed and the other end is connected to the lever frame (516). The other side of the lever frame (516) abuts against the pad (521). The upper and lower surfaces of the lever frame (516) are connected to the inner wall of the cavity (524) through the support point protrusion (518).

9. The circuit breaker testing device according to claim 8, characterized in that: The lever frame (516) includes: a push roller (514), a connecting rod (525), and a connecting piece (526). The outer circumferential surface of the connecting rod (525) is connected to one end of the push rod (515), and the upper and lower ends are connected to one end of the connecting piece (526). The other end of the connecting piece (526) is connected to the push roller (514). The push roller (514) abuts against the pad (521). A strip-shaped opening (519) is provided on the connecting piece (526) between the push roller (514) and the connecting rod (526). One end of the support point protrusion (518) passes through the strip-shaped opening (519) and is fixed to the inner wall of the cavity (524). When the second clamping block (59) moves toward the first clamping block (54), the connecting rod (525) is pulled by the push rod (515), causing the lever frame (516) to rotate around the support point protrusion (518), and the push roller (514) pushes the pad (521) to make the telescopic rubber block (514) extend further from the connecting opening (513) to clamp and fix the connecting line.

10. A circuit breaker testing method, based on a circuit breaker testing device according to any one of claims 1-9, characterized in that: Multiple connecting wires are connected at one end to the circuit breaker and at the other end to the connecting hole (4); The first clamp (54) and the second clamp (59) are clamped and fixed by moving the second clamp (59); During the movement of the second clamping block (59), the auxiliary limiting structure further clamps and fixes the connecting line; The circuit breaker is tested and the data is transmitted to the machine body (1) for processing to obtain the performance parameters of the circuit breaker.

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