Device for testing mechanical characteristics of circuit breaker

Abstract

A breaker mechanical characteristic testing device disclosed by the present invention comprises a mounting rack, an integration box is fixedly installed at the bottom of the mounting rack, a processor, a power supply module, a database module and a comparison module are integrated in the integration box, a clamping assembly is arranged on the mounting rack, and the clamping assembly is in signal connection with the processor. According to the invention, accurate testing of the characteristics of the vacuum circuit breaker is realized through the integrated intelligent control system. A control center adopts a high-performance processor, integrates a data comparison function module and a storage function module, and constructs a complete closed-loop test system through real-time communication with each test assembly, a mechanical characteristic test adopts an innovative double-sensor measurement scheme, a linear displacement sensor directly collects stroke data of a moving part, and the linear displacement sensor directly detects the stroke data of the moving part. And angle deviation compensation is carried out in cooperation with a laser displacement measurement system, so that the test precision of stroke parameters is remarkably improved, and the system can adapt to test requirements in different installation environments.

Description

Technical Field

[0001] The present invention relates to the technical field of circuit breaker testing, and more particularly to a circuit breaker mechanical characteristic testing device. Background Art

[0002] As one of the most important protection and control devices in modern power systems, the accuracy and reliability of the mechanical characteristics of vacuum circuit breakers are directly related to the safe and stable operation of the entire power grid. As my country's power system develops towards ultra-high voltage and intelligentization, the grid's requirements for circuit breaker performance continue to increase. Traditional mechanical characteristic testing methods are no longer able to meet the current demand for accurate assessment of power equipment status. Circuit breaker mechanical characteristic testing must include the simultaneous measurement of multiple parameters such as time, travel, and speed.

[0003] The test equipment currently used in the industry is mostly single-function, requiring separate testing of mechanical properties and temperature monitoring. This discrete testing model is not only inefficient but also makes it difficult to capture the correlation between mechanical motion and temperature changes. In practical applications, changes in circuit breaker contact resistance are often coupled with mechanical characteristic parameters, but traditional equipment lacks the ability to simultaneously collect multiple physical quantities, limiting the accuracy of fault diagnosis. Existing mechanical property testing devices often use a single-sensor solution, measuring the moving contact stroke solely through linear displacement sensors, which cannot effectively compensate for angular errors caused by installation deviations. The stroke measurement errors of traditional equipment seriously affect the accuracy of key parameters such as opening and closing speeds. Furthermore, temperature monitoring typically uses handheld infrared thermometers, which can lead to problems such as asynchronous sampling and incomplete measurement point coverage. In addition, if the equipment is not stable enough or there is displacement during the test, the test accuracy will be affected. Therefore, professionals in this field provide a circuit breaker mechanical characteristics testing device to solve the above-mentioned problems. Summary of the Invention

[0004] In response to the problems existing in the prior art, the purpose of the present invention is to provide a circuit breaker mechanical characteristics testing device, which can accurately test the characteristics of vacuum circuit breaker through an integrated intelligent control system. At the same time, a flexibly arranged temperature sensor array can realize synchronous acquisition of multiple measuring points, thus solving the background technology problems.

[0005] To achieve the above objectives, the present invention adopts the following technical solutions: A circuit breaker mechanical characteristics testing device includes a mounting frame, an integrated box fixedly mounted on the bottom of the mounting frame, the integrated box internally integrating a processor, a power module, a database module, and a comparison module; a clamping assembly provided on the mounting frame, the clamping assembly being connected to the processor signal and the clamping assembly being located on the right side of the integrated box; evenly distributed temperature measurement assemblies are provided on the front and back of the integrated box, the temperature measurement assemblies being connected to the processor signal; a dynamic test assembly provided on the mounting frame, the dynamic test assembly being connected to the processor signal; The power module is used to supply power to the power units and sensors mentioned in the processor, comparison module, database module, clamping assembly, dynamic test assembly and temperature measurement assembly. The power module is a rechargeable power supply. The database module and comparison module are both connected to the processor signal. The database module is used to store the data returned by the sensor and the background input threshold. The comparison module compares the obtained threshold with the value returned by the sensor and transmits the signal to the processor. The clamping assembly includes a card interface, which is provided on the right side of the mounting bracket. The bottom of the mounting bracket is rotatably connected to an internal threaded sleeve, and the internal thread of the internal threaded sleeve is connected to an external threaded column. A through groove is provided on the inner wall of the card interface, and the top of the external threaded column passes through the through groove and extends to the interior of the card interface. A clamping plate is fixedly installed on the top of the external threaded column, and a vibration sensor and a pressure sensor are fixedly installed on the top of the clamping plate. The vibration sensor and the pressure sensor are both connected to the processor signal. The vibration sensor and the pressure sensor respectively obtain the pressure signal and the vibration signal generated between the clamping plate and the vacuum circuit breaker housing and transmit the signals to the processor. The temperature measurement component includes a hollow spring rope, which is connected to the side of the integrated box. The other end of the hollow spring rope is connected to a movable seat. A micro temperature sensor and a controllable electromagnet are fixedly installed inside the movable seat. The micro temperature sensor and the controllable electromagnet are connected to the processor via wires passing through the hollow spring rope. The micro temperature sensor is used to measure the temperature signal of the vacuum circuit breaker contact and transmit it to the processor. The processor controls the opening and closing of the controllable electromagnet through background transmission instructions. The dynamic test assembly includes a linear displacement sensor, which is installed at the bottom of the mounting bracket. A movable connecting rod is installed inside the linear displacement sensor. The top of the movable connecting rod passes through and extends to the top of the mounting bracket. A fixing seat is fixedly installed on the top of the movable connecting rod. An adjustment seat is slidably connected to the top of the fixing seat. Flanges are fixedly installed on the outer rings of the adjustment seat and the fixing seat. Two threaded rods are connected between the two flanges. The threaded rods are locked by multiple nuts. A hook is fixedly installed on the top of the adjustment seat. The hook is used at the connection point between the input crank arm of the circuit breaker and the insulating pull rod. The linear displacement sensor is used to monitor the motion state value of the movable connecting rod and transmit the signal to the processor.

[0006] As a further description of the above technical solution: evenly distributed indicator lights are fixedly installed on the front of the mounting frame, and the indicator lights are connected to the processor signal. The processor controls the on and off of the indicator lights based on the comparison between the value returned by the sensor and the threshold.

[0007] As a further description of the above technical solution: the outside of the integrated box is connected to a display via a wire, and the display is connected to the processor signal. The display can obtain the signal received by the processor and display it as a numerical value.

[0008] As a further description of the above technical solution: a soft pad is fixedly installed on the top of the clamping plate, and the vibration sensor and the pressure sensor are located inside the soft pad.

[0009] As a further description of the above technical solution: a guide groove is provided on the outer side of the external threaded column, and the inner wall of the through groove is slidably connected to the inner wall of the guide groove.

[0010] As a further description of the above technical solution: a laser displacement sensor is fixedly installed on the top of the mounting frame, and the laser displacement sensor is connected to the processor signal. A laser reverse target is fixedly installed on the adjustment seat, and the laser displacement sensor is used to measure the distance value between the laser reverse target and transmit the signal to the processor.

[0011] As a further description of the above technical solution: a metal plate is fixedly installed on the bottom of the integrated box, and the movable seat is adsorbed on the bottom of the metal plate through a controllable electromagnet.

[0012] As a further description of the above technical solution: a metal shielding net is installed on the inner wall of the movable seat, and the micro temperature sensor is located inside the metal shielding net.

[0013] Compared with the prior art, the advantages of the present invention are: This invention achieves precise testing of vacuum circuit breaker characteristics through an integrated intelligent control system. The control center utilizes a high-performance processor, integrated with data comparison and storage modules, and constructs a complete closed-loop testing system through real-time communication with each test component. Mechanical characteristic testing utilizes an innovative dual-sensor measurement solution. A linear displacement sensor directly acquires travel data of moving components, and in conjunction with a laser displacement measurement system, compensates for angular deviations. This significantly improves travel parameter testing accuracy, enabling the system to adapt to testing requirements in diverse installation environments. The temperature monitoring system utilizes a flexible wiring design, enabling simultaneous acquisition of data from multiple measurement points through a flexibly arranged array of temperature sensors. Its high-precision temperature measurement capability not only effectively identifies potential defects such as poor contact, but also provides auxiliary diagnostic evidence for mechanical property testing. The clamping system utilizes a precision threaded drive mechanism, coupled with real-time pressure monitoring, ensuring secure installation of the equipment during testing while avoiding damage caused by over-clamping. The system also incorporates vibration monitoring, effectively identifying hidden mechanical faults such as buffer failure or connecting rod wear. Temperature monitoring provides environmental compensation for mechanical property testing, vibration monitoring assists in determining mechanical status, and a precise clamping system provides a stable foundation for various tests. This system-level integrated design not only improves the test accuracy of a single parameter but, more importantly, enables a comprehensive assessment of the circuit breaker's overall condition, providing a more comprehensive and reliable basis for equipment maintenance. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention; Figure 2 It is a front view structural schematic diagram of the present invention; Figure 3 It is a schematic diagram of the three-dimensional structure of the clamping assembly of the present invention; Figure 4 This is a schematic diagram of the three-dimensional structure of the temperature measurement component of the present invention; Figure 5 This is a schematic diagram of the three-dimensional structure of the hook of the present invention; Figure 6 It is a schematic diagram of the principle of the present invention.

[0015] Description of the numbers in the figure: 1. Mounting frame; 2. Integrated box; 201. Processor; 202. Power module; 203. Database module; 204. Comparison module; 3. Clamping assembly; 301. Card interface; 302. Internal threaded sleeve; 303. External threaded column; 304. Through slot; 305. Clamping plate; 306. Vibration sensor; 307. Pressure sensor; 4. Temperature measurement assembly; 401. Hollow spring rope; 402. Movable seat; 403. Micro temperature sensor; 404. Controllable electromagnet; 5. Dynamic test assembly; 501. Linear displacement sensor; 502. Movable connecting rod; 503. Fixed seat; 504. Adjustable seat; 505. Flange; 506. Threaded rod; 507. Hook; 6. Indicator light; 7. Display; 8. Soft cushion; 9. Guide groove; 10. Laser displacement sensor; 11. Laser reverse target; 12. Metal plate; 13. Metal shielding net. DETAILED DESCRIPTION

[0016] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings in the embodiments of the present invention; See also Figure 1-6 In the present invention, a circuit breaker mechanical characteristics testing device includes a mounting frame 1, an integrated box 2 is fixedly installed at the bottom of the mounting frame 1, and a processor 201, a power module 202, a database module 203 and a comparison module 204 are integrated inside the integrated box 2. A clamping component 3 is provided on the mounting frame 1, and the clamping component 3 is signal-connected to the processor 201. The clamping component 3 is located on the right side of the integrated box 2. The front and back sides of the integrated box 2 are both evenly distributed. The temperature measuring components 4 are signal-connected to the processor 201. A dynamic test component 5 is provided on the mounting frame 1, and the dynamic test component 5 is signal-connected to the processor 201.

[0017] The power supply module 202 is used to supply power to the power units and sensors mentioned in the processor 201, the comparison module 204, the database module 203, the clamping component 3, the dynamic test component 5 and the temperature measurement component 4. The power supply module 202 is a rechargeable power supply. The database module 203 and the comparison module 204 are both signal-connected to the processor 201. The database module 203 is used to store the data returned by the sensor and the background input threshold. The comparison module 204 obtains the threshold and compares it with the value returned by the sensor and transmits the signal to the processor 201.

[0018] The clamping assembly 3 includes a card interface 301, which is opened on the right side of the mounting frame 1. The bottom of the mounting frame 1 is rotatably connected to an internal threaded sleeve 302, and the internal thread of the internal threaded sleeve 302 is connected to an external threaded column 303. A through groove 304 is opened on the inner wall of the card interface 301. The top of the external threaded column 303 passes through the through groove 304 and extends to the interior of the card interface 301. A clamping plate 305 is fixedly installed on the top of the external threaded column 303. A vibration sensor 306 and a pressure sensor 307 are fixedly installed on the top of the clamping plate 305. Both the vibration sensor 306 and the pressure sensor 307 are connected to the processor 201 signal. The vibration sensor 306 and the pressure sensor 307 respectively obtain the pressure signal and vibration signal generated between the clamping plate 305 and the vacuum circuit breaker housing and transmit the signals to the processor 201.

[0019] The temperature measuring component 4 includes a hollow spring rope 401, which is connected to the side of the integrated box 2. The other end of the hollow spring rope 401 is connected to a movable seat 402. A micro temperature sensor 403 and a controllable electromagnet 404 are fixedly installed inside the movable seat 402. The micro temperature sensor 403 and the controllable electromagnet 404 are connected to the processor 201 through wires passing through the hollow spring rope 401. The micro temperature sensor 403 is used to measure the temperature signal of the vacuum circuit breaker contact and transmit it to the processor 201. The processor 201 transmits instructions through the background to control the opening and closing of the controllable electromagnet 404.

[0020] The dynamic test assembly 5 includes a linear displacement sensor 501, which is installed at the bottom of the mounting frame 1. A movable connecting rod 502 is installed inside the linear displacement sensor 501. The top of the movable connecting rod 502 passes through and extends to the top of the mounting frame 1. A fixed seat 503 is fixedly installed on the top of the movable connecting rod 502. The top of the fixed seat 503 is slidably connected to an adjustment seat 504. The outer rings of the adjustment seat 504 and the fixed seat 503 are fixedly installed with flanges 505. Two threaded rods 506 are connected between the two flanges 505. The threaded rods 506 are locked by multiple nuts. A hook 507 is fixedly installed on the top of the adjustment seat 504. The hook 507 is used at the connection point between the input arm of the circuit breaker and the insulating pull rod. The linear displacement sensor 501 is used to monitor the motion state value of the movable connecting rod 502 and transmit the signal to the processor 201.

[0021] The outside of the integrated box 2 is connected to a display 7 through a wire, and the display 7 is connected to the processor 201 signal. The display 7 can obtain the signal received by the processor 201 and display it as a numerical value; a guide groove 9 is opened on the outside of the external threaded column 303, and the inner wall of the through groove 304 is slidably connected to the inner wall of the guide groove 9.

[0022] A laser displacement sensor 10 is fixedly installed on the top of the mounting frame 1, and the laser displacement sensor 10 is connected to the processor 201 by signal. A laser reverse target 11 is fixedly installed on the adjustment seat 504, and the laser displacement sensor 10 is used to measure the distance value between the laser reverse target 11 and transmit the signal to the processor 201.

[0023] Evenly distributed indicator lights 6 are fixedly mounted on the front of the mounting frame 1 . The indicator lights 6 are connected to the processor 201 by signal. The processor 201 controls the on and off of the indicator lights 6 based on the comparison between the value sent back by the sensor and the threshold.

[0024] When the mechanical characteristics test of the vacuum circuit breaker is required, data is first transmitted to the processor 201 through the background, and multiple sensor thresholds are set, such as appropriate pressure values ​​to ensure stable clamping without excessive pressure, and the display 7 is connected.

[0025] The mounting frame 1 is then fixed to the circuit breaker housing through the clamping assembly 3. The clamping plate 305 drives the external threaded column 303 to rise and fall along the guide groove 9 by rotating the internal threaded sleeve 302, so that the clamping plate 305 and the inner top wall of the card interface 301 form a clamping force. The pressure sensor 307 monitors the clamping pressure in real time. When the pressure value reaches the safety threshold preset by the database module 203, the operator can stop the rotation according to the display 7 to ensure that the clamping is stable and does not damage the circuit breaker housing. At the same time, the vibration sensor 306 serves as a redundant monitoring module, which can detect abnormal vibration during the clamping process and issue an alarm through the display 7.

[0026] The operator can then fine-tune the horizontal and vertical positions of the hook 507 by adjusting the threaded rod 506 between the flange 505 to ensure easy measurement. The laser displacement sensor 10 monitors the position changes of the laser reverse target 11 in real time, and its data is double-checked with the linear displacement sensor 501. The linear displacement sensor 501 directly collects the linear motion stroke of the insulating pull rod, and the laser displacement sensor 10 measures the angular deviation through the displacement compensation of the laser reverse target 11. This dual-sensor system can control the comprehensive error to be lower than the industry standard.

[0027] The operator then controls the controllable electromagnet 404 to adsorb onto the metal area near the circuit breaker contact. The hollow spring rope 401 allows the movable seat 402 to adapt to different contact spatial layouts. The micro temperature sensor 403 collects contact temperature rise data in real time. The setting of the hollow wire can speed up data transmission.

[0028] The hook 507 of the dynamic test component 5 is hooked to the connection point between the circuit breaker input arm and the insulating pull rod. When the circuit breaker performs the opening and closing operation, the hook 507 and the movable connecting rod 502 are driven to move. The linear displacement sensor 501 records the stroke and time curve, scores the closing speed and is displayed on the display 7 by the processor 201. At the same time, the laser displacement sensor 10 synchronously monitors the straightness of the motion trajectory. If the deviation exceeds the threshold, it is determined that the mechanism is stuck. The vibration sensor 306 collects the mechanical vibration spectrum at the moment of opening and closing and compares it with the standard waveform stored in the database module 203. Hidden faults such as buffer failure or connecting rod wear can be diagnosed.

[0029] During the above process, after the system is started, the processor 201 first initializes and detects each temperature measuring component 4. The micro temperature sensors 403 located at key positions of the three-phase contacts and the arc extinguishing chamber establish a connection with the main control unit via the data line in the hollow spring rope 401, and transmit the ambient temperature reference value to the database module 203. The display 7 shows the status of each measuring point in real time. During the test, all micro temperature sensors 403 synchronously collect temperature data and transmit it to the processor 201 via shielded twisted pair cables. Multi-position synchronous measurement can obtain the overall temperature field distribution of the circuit breaker at one time, avoiding human errors introduced by multiple measurements. By comparing the synchronous change curves of the three-phase contact temperature, faults such as poor contact and asynchronous opening and closing can be more accurately identified.

[0030] In the present invention, the control center with the processor 201 as the core integrates the comparison module 204 and the database module 203 to realize efficient processing and intelligent analysis of test data. The processor 201 collects multi-dimensional test data in real time and controls the entire test process through signal connection with the clamping component 3, the dynamic test component 5 and the temperature measurement component 4. The database module 203 stores standard parameters and test thresholds, and the comparison module 204 intelligently compares the real-time data with the standard values ​​to ensure the accuracy of the test results.

[0031] The dynamic test component 5 adopts a dual-sensor measurement architecture. The linear displacement sensor 501 directly measures the linear stroke of the movable link 502, and the laser displacement sensor 10 compensates for the angular deviation by monitoring the position change of the laser reverse target 11. This design reduces the comprehensive measurement error, significantly improves the test accuracy of mechanical characteristic parameters, and adapts to different test environments.

[0032] At the same time, the hollow spring rope 401 in the temperature measuring component 4 provides a flexible wiring method, and the built-in micro temperature sensor 403 and controllable electromagnet 404 in the movable seat 402 can realize synchronous temperature acquisition at multiple measuring points. The temperature measurement accuracy of this system is high, and it can effectively identify potential faults such as poor contact of contacts to avoid affecting its mechanical properties test. It can also promptly eliminate problems after abnormalities occur in the test.

[0033] In addition, the internal threaded sleeve 302 and the external threaded column 303 in the clamping assembly 3 realize precise feeding and the pressure sensor 307 monitors the clamping force in real time to achieve a better clamping effect. The vibration sensor 306 detects abnormal vibration and can diagnose hidden faults such as buffer failure or connecting rod wear.

[0034] See also Figure 1-3 , wherein: a soft pad 8 is fixedly installed on the top of the clamping plate 305 , and the vibration sensor 306 and the pressure sensor 307 are inside the soft pad 8 .

[0035] In the present invention, a soft pad 8 is fixedly installed on the top of the clamping plate 305, and a vibration sensor 306 and a pressure sensor 307 are built into it. The soft pad 8 is made of highly elastic silicone material, which effectively absorbs the impact vibration during the clamping process and protects the surface of the circuit breaker housing from scratches. At the same time, the built-in sensor layout makes the pressure detection closer to the actual contact surface, thereby improving the detection sensitivity.

[0036] See also Figure 1 and 2 , wherein: a metal plate 12 is fixedly mounted on the bottom of the integrated box 2 , and the movable seat 402 is adsorbed on the bottom of the metal plate 12 through a controllable electromagnet 404 .

[0037] In the present invention, the metal plate 12 can be adsorbed by the controllable electromagnet 404, thereby facilitating the storage of the temperature measuring component 4 and reducing the space occupied by the equipment.

[0038] See also Figure 4 , wherein: a metal shielding net 13 is installed on the inner wall of the movable seat 402 , and the micro temperature sensor 403 is located inside the metal shielding net 13 .

[0039] In the present invention, the stainless steel braided mesh forms a Faraday cage, which attenuates spatial electromagnetic interference, thereby facilitating the micro temperature sensor 403 to obtain a value.

[0040] The above description is merely a preferred embodiment of the present invention; however, the scope of protection of the present invention is not limited thereto. Any person skilled in the art who, within the technical scope disclosed by the present invention, makes equivalent substitutions or modifications based on the technical solutions and improved concepts of the present invention shall be covered by the scope of protection of the present invention.

Claims

1. A circuit breaker mechanical characteristics testing device, comprising a mounting frame (1), characterized in that: An integrated box (2) is fixedly mounted on the bottom of the mounting frame (1), and a processor (201), a power module (202), a database module (203) and a comparison module (204) are integrated inside the integrated box (2). A clamping assembly (3) is provided on the mounting frame (1), and the clamping assembly (3) is connected to the processor (201) by signal. The clamping assembly (3) is located on the right side of the integrated box (2). Temperature measuring assemblies (4) are evenly distributed on the front and back of the integrated box (2), and the temperature measuring assemblies (4) are connected to the processor (201) by signal. A dynamic test assembly (5) is provided on the mounting frame (1), and the dynamic test assembly (5) is connected to the processor (201) by signal. The power supply module (202) is used to supply power to the power consumption units and sensors mentioned in the processor (201), the comparison module (204), the database module (203), the clamping component (3), the dynamic test component (5) and the temperature measurement component (4); the power supply module (202) is a rechargeable power supply; the database module (203) and the comparison module (204) are both connected to the processor (201) by signal; the database module (203) is used to store the data returned by the sensor and the background input threshold; the comparison module (204) compares the obtained threshold with the value returned by the sensor and transmits the signal to the processor (201); The clamping assembly (3) includes a card interface (301), the card interface (301) is provided on the right side of the mounting frame (1), the bottom of the mounting frame (1) is rotatably connected to an internal threaded sleeve (302), the internal thread of the internal threaded sleeve (302) is connected to an external threaded column (303), a through groove (304) is provided on the inner wall of the card interface (301), the top end of the external threaded column (303) passes through the through groove (304) and extends to the inside of the card interface (301), and the external threaded column (303) is provided on the inner wall of the card interface (301). 03) is fixedly mounted with a clamping plate (305) on the top, and a vibration sensor (306) and a pressure sensor (307) are fixedly mounted on the top of the clamping plate (305), and the vibration sensor (306) and the pressure sensor (307) are both connected to the processor (201) for signal connection, and the vibration sensor (306) and the pressure sensor (307) respectively obtain the pressure signal and the vibration signal generated between the clamping plate (305) and the vacuum circuit breaker housing and transmit the signals to the processor (201); The temperature measuring component (4) includes a hollow spring rope (401), the hollow spring rope (401) is connected to the side of the integrated box (2), the other end of the hollow spring rope (401) is connected to a movable seat (402), a micro temperature sensor (403) and a controllable electromagnet (404) are fixedly installed inside the movable seat (402), the micro temperature sensor (403) and the controllable electromagnet (404) are connected to the processor (201) through a wire passing through the hollow spring rope (401), the micro temperature sensor (403) is used to measure the temperature signal of the vacuum circuit breaker contact and transmit it to the processor (201), and the processor (201) is used to control the opening and closing of the controllable electromagnet (404) through background transmission instructions; The dynamic test assembly (5) includes a linear displacement sensor (501), the linear displacement sensor (501) is mounted on the bottom of the mounting frame (1), a movable connecting rod (502) is mounted inside the linear displacement sensor (501), the top end of the movable connecting rod (502) passes through and extends to the top of the mounting frame (1), a fixed seat (503) is fixedly mounted on the top end of the movable connecting rod (502), the top end of the fixed seat (503) is slidably connected to an adjustment seat (504), and the adjustment seat (504) is connected to the The outer ring of the fixing seat (503) is fixedly mounted with a flange (505), and two threaded rods (506) are connected between the two flanges (505), and the threaded rods (506) are locked by multiple nuts. A hook (507) is fixedly mounted on the top of the adjustment seat (504), and the hook (507) is used at the connection point between the input arm of the circuit breaker and the insulating pull rod. The linear displacement sensor (501) is used to monitor the motion state value of the movable link (502) and transmit the signal to the processor (201).

2. A circuit breaker mechanical characteristics testing device according to claim 1, characterized in that: Evenly distributed indicator lights (6) are fixedly mounted on the front of the mounting frame (1). The indicator lights (6) are connected to the processor (201) by signal. The processor (201) controls the on and off of the indicator lights (6) by comparing the value returned by the sensor with a threshold value.

3. The circuit breaker mechanical characteristics testing device according to claim 1, characterized in that: The outside of the integrated box (2) is connected to a display (7) via a wire, and the display (7) is connected to the processor (201) by signal. The display (7) can obtain the signal received by the processor (201) and display it as a numerical value.

4. A circuit breaker mechanical characteristics testing device according to claim 1, characterized in that: A soft pad (8) is fixedly mounted on the top of the clamping plate (305), and the vibration sensor (306) and the pressure sensor (307) are located inside the soft pad (8).

5. The circuit breaker mechanical characteristics testing device according to claim 1, characterized in that: A guide groove (9) is provided on the outer side of the external threaded column (303), and the inner wall of the through groove (304) is slidably connected to the inner wall of the guide groove (9).

6. A circuit breaker mechanical characteristics testing device according to claim 1, characterized in that: A laser displacement sensor (10) is fixedly mounted on the top of the mounting frame (1), and the laser displacement sensor (10) is connected to the processor (201) via a signal. A laser reverse target (11) is fixedly mounted on the adjustment seat (504), and the laser displacement sensor (10) is used to measure the distance value between the laser reverse target (11) and transmit the signal to the processor (201).

7. The circuit breaker mechanical characteristics testing device according to claim 1, characterized in that: A metal plate (12) is fixedly mounted on the bottom of the integrated box (2), and the movable seat (402) is adsorbed on the bottom of the metal plate (12) via a controllable electromagnet (404).

8. The circuit breaker mechanical characteristics testing device according to claim 1, characterized in that: A metal shielding net (13) is installed on the inner wall of the movable seat (402), and the micro temperature sensor (403) is located inside the metal shielding net (13).

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