Performance testing device and method for relay protection

Abstract

The invention provides a performance testing device and method for relay protection, belongs to the technical field of circuit testing equipment, and solves the technical problems that the working intensity of operation and maintenance personnel is high due to the fact that an existing road is rugged and equipment is heavy, the temperature is high in summer, and mechanical equipment and the maintenance personnel are overheated due to the too high temperature. The performance testing device for relay protection comprises a moving box and an equipment cavity formed in the moving box, a mounting frame is rotationally connected in the equipment cavity, a relay protection tester is arranged on the mounting frame, a limiting plate is slidably connected to the mounting frame, and a regulation and control assembly for controlling the limiting plate to move is arranged on the mounting frame. And the limiting plate and the inner wall of the mounting frame clamp and fix the relay protection tester, and the bottom of the moving box is slidably connected with a driving box. The device has the advantages that the mobility of the device is achieved, the damping effect is achieved during moving, vibration to the device is reduced, and wind power can be generated to cool the device when the device is transferred and advances.

Description

Technical Field

[0001] This invention belongs to the technical field of circuit testing equipment, specifically relating to a performance testing device and method for relay protection. Background Technology

[0002] Relay protection is an important measure to detect faults or abnormalities in a power system and issue alarm signals, or directly isolate and disconnect the faulty part. Relay protection devices are equipment to ensure the stable operation of the current circuit system and provide necessary protection for circuit equipment when circuit faults occur. With the rapid development of computer technology, microelectronics technology and power electronics technology, it is an inevitable trend of technological progress to continuously launch new high-performance relay protection testing devices based on the latest technological achievements. Relay protection testing devices can test various AC and DC currents, voltages and intermediate signals, as well as various individual relays and entire relay protection panels. They can test the pull-in voltage or current value, release voltage or current value, and pull-in time and disconnection time of various contacts (normally open, normally closed, changeover, and time-delay).

[0003] A search revealed a Chinese patent document disclosing a relay protection testing device [Application No.: 202310262254.X; Publication No.: CN 116381284 A]. This relay protection testing device uses a shock-absorbing damping spring to reduce vibration and prevent damage to internal components during movement. Simultaneously, the device cleans the filter online during movement to prevent impact on heat dissipation. After use, manually opening the valve on the air outlet duct resets the spring-driven sliding plate and sealing plate, preventing external humid air from entering the device and causing corrosion to internal components over time.

[0004] While this patent prevents external humid air from entering the interior of the relay protection test device when it is not in use, thus avoiding long-term rust and corrosion of the internal components, the working environment for maintenance personnel is quite harsh. Substations and power towers are mostly built in remote areas, and some roads are inaccessible by vehicles during inspections at remote sites, requiring walking. Due to the rugged roads and heavy equipment, the workload of maintenance personnel is high, and bumpy roads can easily cause collisions with the equipment, resulting in damage. In addition, high temperatures in summer can cause overheating of the machinery and maintenance personnel, and when the temperature exceeds the equipment's load limit, equipment failure or damage will occur. Summary of the Invention

[0005] The purpose of this invention is to address the aforementioned problems in existing technologies by proposing a performance testing device and method for relay protection. The technical problem to be solved by this invention is: how to achieve the mobility of the equipment, and how to provide shock absorption during movement to reduce vibration of the equipment, and how to generate wind to cool the equipment and personnel during operation.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: A performance testing device for relay protection includes a movable box and an equipment cavity inside the movable box. A mounting frame is rotatably connected to the equipment cavity, and a relay protection tester is mounted on the mounting frame. A limit plate is slidably connected to the mounting frame, and a control component for controlling the movement of the limit plate is provided on the mounting frame. The limit plate and the inner wall of the mounting frame clamp and fix the relay protection tester. A drive box is slidably connected to the bottom of the movable box. Both sides of the drive box are provided with travel wheels. A drive rod is rotatably connected inside the drive box, and both ends of the drive rod are coaxially fixedly connected to the corresponding travel wheels. The relay protection tester includes a main control unit, a signal generation module, an output control module, a measurement and acquisition module, a human-machine interaction module, and a power supply and protection module. The main control unit includes a digital signal processor and a logic control board, and the logic control board is electrically connected to each module and the digital signal processor. The signal generation module includes a fuse, a dual carbon brush voltage regulator, a current booster, and a rectifier filter. The output control module includes a relay group and a signal switching switch; The measurement and acquisition module includes a high-precision sensor, an analog-to-digital converter, and an integrated digital millisecond meter; The human-computer interaction module includes a TFT true-color screen, status indicator lights, an operation interface, a touch panel, and a communication interface; The power supply and protection module includes a UPS power supply and an overcurrent protector.

[0007] A further improvement of the present invention is that a first driving bevel gear is coaxially fixedly connected to the driving rod, a second driving bevel gear is rotatably connected inside the driving box, the first driving bevel gear meshes with the second driving bevel gear, a cross rod is coaxially fixedly connected to the second driving bevel gear, a third driving bevel gear is rotatably connected inside the moving box, a cross hole is opened at the wheel core of the third driving bevel gear, and the cross rod is inserted into the cross hole, a fourth driving bevel gear is rotatably connected inside the moving box, a first transmission gear is coaxially fixedly connected to the fourth driving bevel gear, and a heat dissipation cavity is provided inside the moving box, a heat dissipation frame is fixed inside the heat dissipation cavity, multiple fan wheels are rotatably arranged inside the heat dissipation frame, and the heat dissipation cavity is connected to the equipment cavity, and multiple drive gears are rotatably connected inside the moving box. The drive bevel gear five is coaxially and fixedly connected to the corresponding wind turbine. A transmission rod is rotatably connected inside the moving box. Multiple drive bevel gears six are coaxially and fixedly connected to the transmission rod. Each drive bevel gear six meshes with the corresponding drive bevel gear five. A transmission gear two is coaxially and fixedly connected to the transmission rod. A transmission toothed belt one is connected to the transmission gear one and the transmission gear two. A pair of stabilizing rods are fixed on the left and right sides of the top surface of the drive box. Each stabilizing rod is slidably connected to the moving box. Each stabilizing rod is fitted with a shock-absorbing spring. The top end of each shock-absorbing spring is fixedly connected to the bottom surface of the moving box, and the bottom end of each shock-absorbing spring is fixedly connected to the top surface of the drive box.

[0008] A further improvement of the present invention is that the movable box has a storage slot, a support plate is rotatably mounted in the storage slot, a pair of support rods are rotatably connected to the support plate, a drive bevel gear seven is coaxially fixedly connected to one side of the support plate's pivot, a drive bevel gear eight is rotatably connected inside the movable box, a pair of control rods are rotatably mounted inside the support plate, each control rod is coaxially fixedly connected to a control gear, a control belt is connected to the two control gears, a drive bevel gear nine is coaxially fixedly connected to each control rod, and the drive bevel gear eight is coaxially fixedly connected to one of the control rods, a pair of drive bevel gears ten are rotatably connected inside the movable box, each drive bevel gear ten meshes with a corresponding drive bevel gear nine, a pair of support rods two are slidably connected to the bottom of the movable box, and an adjustment screw is coaxially fixedly connected to each drive bevel gear ten, each adjustment screw is threadedly connected to a corresponding support rod two, and an operating groove is provided on the surface of the support plate.

[0009] A further improvement of the present invention is that a transmission gear five is provided inside the support plate, the shaft of the transmission gear five passes through the support plate and is fixedly connected to the wall of the storage groove, and a transmission gear six is ​​rotatably connected inside the support plate. A transmission toothed belt three is provided on the transmission gear five and the transmission gear six. A control rod is coaxially fixedly connected between the two support rods one, and one end of the control rod is coaxially fixedly connected to the transmission gear six.

[0010] A further improvement of the present invention is that a pair of guide grooves are provided on the support plate, and a plug block is slidably connected in each guide groove. A pair of slots are provided on the wall of the receiving groove. Each plug block engages with the corresponding slot. A push spring is fixed between each plug block and the bottom of the corresponding guide groove.

[0011] A further improvement of the present invention is that an adjusting gear is rotatably connected inside the support plate, a winding wheel two is coaxially fixedly connected to the adjusting gear, a pull rope two is fixedly connected between the winding wheel two and the two insert blocks two, and a driving rack two is slidably connected to the support plate, the driving rack two meshes with the adjusting gear, and an operating block is fixed on the driving rack two, the operating block protruding from the surface of the support plate.

[0012] A further improvement of the present invention is that a connecting arm is rotatably connected to the movable box, a handle is fixed to one end of the connecting arm, a transmission gear three and a transmission gear four are rotatably connected inside the movable box, the transmission gear three is coaxially fixedly connected to the rotating shaft of the connecting arm, the transmission gear four is coaxially fixedly connected to the rotating shaft of the mounting frame, and a transmission toothed belt two is connected to the transmission gear three and the transmission gear four.

[0013] A further improvement of the present invention is that a drive rack is slidably connected inside the handlebar, an adjustment groove is provided inside the handlebar, a trigger block is slidably connected inside the adjustment groove, a push spring is fixed between the trigger block and the bottom of the adjustment groove, one end of the trigger block is exposed outside the handlebar, and the other end of the trigger block is fixedly connected to the drive rack. A meshing gear is rotatably connected inside the connecting arm, meshing with the drive rack, and a winding wheel is coaxially fixedly connected to the meshing gear. A guide groove is provided on the connecting arm, an insert block is slidably connected inside the guide groove, a push spring is fixed between the insert block and the bottom of the guide groove, and a pull rope is fixed between the insert block and the winding wheel. A slot is provided on the moving box, and the slot and the insert block are engaged.

[0014] A further improvement of the present invention is that the control component includes a control screw rotatably connected within the mounting frame, a drive worm gear coaxially fixedly connected to one end of the control screw, a drive worm gear rotatably connected within the mounting frame, the drive worm gear meshing with the drive worm gear, the control screw being threadedly connected to a limit plate, and a control seat rotatably connected to the mounting frame, the control seat being coaxially fixedly connected to the drive worm gear.

[0015] A performance testing method for relay protection, the method being based on the aforementioned performance testing device for relay protection, comprising: During transport, personnel use the mobile container to dissipate heat from the internal relay protection tester, preventing it from overheating. The vertical movement of the entire drive box reduces vibration to the tester without affecting normal heat dissipation. When the tester needs to be exposed, it is clamped and secured by a limiting plate and the inner wall of the mounting frame. The drive box then rotates the mounting frame, allowing personnel to adjust the rotation angle to expose the tester. Once exposed, the relay protection device can be tested using the relay protection tester.

[0016] Compared with the prior art, the present invention has at least the following beneficial technical effects: 1. By cooling the internal relay protection tester during the journey, the internal temperature of the relay protection tester is prevented from becoming too high, thereby improving its service life and maintaining its effectiveness. Furthermore, by adjusting the air duct and connecting it to the air outlet, the airflow direction can be guided, thus blowing air onto maintenance personnel and cooling them down during the journey.

[0017] 2. The drive box can move up and down by inserting the cross rod and the cross hole. With the help of the shock-absorbing spring, the shock absorption effect is achieved, which reduces the vibration of the internal relay protection tester during movement, and does not affect the normal transmission and heat dissipation effect. Attached Figure Description

[0018] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of the structure of the present invention.

[0020] Figure 2 This is a schematic diagram of the limiting structure of the support plate in this invention.

[0021] Figure 3 This is a schematic diagram of the linkage structure of the second support rod unfolding in this invention.

[0022] Figure 4 This is a schematic diagram of the internal structure of the connecting arm in this invention.

[0023] Figure 5 This is a schematic diagram of the control component in this invention.

[0024] Figure 6This is a schematic diagram of the internal structure of the mobile box in this invention.

[0025] Figure 7 This is a schematic diagram of the internal structure of the drive box in this invention.

[0026] Figure 8 This is a schematic diagram of the linkage structure of the support plate in this invention.

[0027] Figure 9 This is a schematic diagram of the linkage structure between the mounting bracket and the connecting arm in this invention.

[0028] Figure 10 This is a schematic diagram of the structure in which the drive rack 2 meshes with the regulating gear in this invention.

[0029] Figure 11 This is a three-dimensional structural diagram of the cross rod and cross hole in this invention.

[0030] Figure 12 This is a schematic diagram of the relay protection tester in this invention.

[0031] Explanation of reference numerals in the attached figures: 1. Moving box; 2. Equipment cavity; 3. Mounting bracket; 4. Relay protection tester; 5. Limit plate; 6. Drive box; 7. Traveling wheel; 8. Drive rod; 9. Drive bevel gear one; 10. Drive bevel gear two; 11. Cross rod; 12. Drive bevel gear three; 13. Cross hole; 14. Drive bevel gear four; 15. Transmission gear one; 16. Heat dissipation cavity; 17. Heat dissipation frame; 18. Fan wheel; 19. Drive bevel gear five; 20. 21. Transmission rod; 22. Drive bevel gear six; 23. Transmission gear two; 24. Transmission toothed belt one; 25. Stabilizer bar; 26. Shock-absorbing spring; 27. Storage slot; 28. Support plate; 29. ​​Support rod one; 30. Drive bevel gear seven; 31. Drive bevel gear eight; 32. Adjustment rod; 33. Control gear; 34. Control toothed belt; 35. Drive bevel gear nine; 36. Drive bevel gear ten; 37. Support rod two; 38. Adjustment screw 38. Lever; 49. Operating slot; 40. Transmission gear five; 41. Transmission gear six; 42. Transmission belt three; 43. Control lever; 44. Connecting arm; 45. Handle; 46. Transmission gear three; 47. Transmission belt four; 48. Drive rack one; 49. Adjustment slot; 50. Trigger block; 51. Push spring one; 52. Meshing gear one; 53. Reel one; 54. Guide groove one; 55. Insert block one 56. Push spring II; 57. Pull rope I; 58. Slot I; 59. Adjusting screw; 60. Drive worm gear; 61. Drive worm; 62. Adjusting seat; 63. Guide slide groove II; 64. Insert block II; 65. Slot II; 66. Push spring III; 67. Adjusting gear; 68. Winding wheel II; 69. Pull rope II; 70. Drive rack II; 71. Operating block; 72. Ventilation opening; 73. Air outlet; 74. Adjusting duct. Detailed Implementation

[0032] In the following description, only certain exemplary embodiments are briefly described. As those skilled in the art will recognize, the described embodiments can be modified in various ways without departing from the spirit or scope of the invention. Therefore, the drawings and description are considered to be exemplary in nature and not restrictive.

[0033] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used 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.

[0034] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified.

[0035] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a communication connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0036] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature being directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature being directly above or diagonally above the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0037] It should be understood that the terminology used in this specification is for the purpose of describing particular embodiments only and is not intended to limit the invention. As used in this specification and the appended claims, the singular forms “a,” “an,” and “the” are intended to include the plural forms unless the context clearly indicates otherwise.

[0038] It should also be understood that the term “and / or” as used in this specification and the appended claims refers to any combination of one or more of the associated listed items and all possible combinations, and includes such combinations.

[0039] The accompanying drawings illustrate various structural schematic diagrams according to embodiments disclosed in this invention. These drawings are not to scale, and some details have been enlarged for clarity, and some details may have been omitted. The shapes of the various regions and layers shown in the drawings, as well as their relative sizes and positional relationships, are merely exemplary and may deviate from reality due to manufacturing tolerances or technical limitations. Furthermore, those skilled in the art can design regions / layers with different shapes, sizes, and relative positions as needed.

[0040] The embodiments of the present invention will now be described in detail with reference to the accompanying drawings.

[0041] Example 1 like Figures 1-12As shown, the present invention provides a performance testing device for relay protection, comprising a movable box 1 and an equipment cavity 2 inside the movable box 1. A mounting frame 3 is rotatably connected inside the equipment cavity 2. A relay protection tester 4 is mounted on the mounting frame 3. A limit plate 5 is slidably connected to the mounting frame 3, and a control component for controlling the movement of the limit plate 5 is provided on the mounting frame 3. The limit plate 5 and the inner wall of the mounting frame 3 clamp and fix the relay protection tester 4. A drive box 6 is slidably connected to the bottom of the movable box 1. Both sides of the drive box 6 are provided with travel wheels 7. A drive rod 8 is rotatably connected inside the drive box 6, and the two sides of the drive rod 8... Each end is coaxially fixedly connected to the corresponding traveling wheel 7. A drive bevel gear 9 is coaxially fixedly connected to the drive rod 8. A drive bevel gear 10 is rotatably connected inside the drive box 6. The drive bevel gear 9 meshes with the drive bevel gear 10. A cross rod 11 is coaxially fixedly connected to the drive bevel gear 10. A drive bevel gear 12 is rotatably connected inside the moving box 1. A cross hole 13 is opened at the wheel core of the drive bevel gear 12, and the cross rod 11 is inserted into the cross hole 13. A drive bevel gear 14 is rotatably connected inside the moving box 1. A transmission gear 15 is coaxially fixedly connected to the drive bevel gear 14. Furthermore, the mobile housing 1 is equipped with a heat dissipation cavity 16, within which a heat dissipation frame 17 is fixed. Multiple fan wheels 18 are rotatably mounted within the heat dissipation frame 17. The heat dissipation cavity 16 is connected to the equipment cavity 2. Multiple drive bevel gears 19 are rotatably connected within the mobile housing 1, each drive bevel gear 19 being coaxially fixedly connected to a corresponding fan wheel 18. A transmission rod 20 is rotatably connected within the mobile housing 1, with multiple drive bevel gears 21 coaxially fixedly connected to the transmission rod 20. Each drive bevel gear 21 meshes with a corresponding drive bevel gear 19. A transmission... The drive gear 22 and the transmission gear 15 are connected to the transmission gear 22 by a transmission belt 23. A pair of stabilizing rods 24 are fixed on both the left and right sides of the top surface of the drive box 6. Each stabilizing rod 24 is slidably connected to the moving box 1. Each stabilizing rod 24 is fitted with a shock-absorbing spring 25. The top end of each shock-absorbing spring 25 is fixedly connected to the bottom surface of the moving box 1, and the bottom end of each shock-absorbing spring 25 is fixedly connected to the top surface of the drive box 6. The relay protection tester 4 includes a main control unit, a signal generation module, an output control module, a measurement and acquisition module, a human-machine interaction module, and a power supply and protection module. The main control unit includes a digital signal processor and a logic control board, which are electrically connected to each module and the digital signal processor. The signal generation module includes a fuse, a dual carbon brush voltage regulator, a current booster, and a rectifier filter; The output control module includes a relay group and a signal switching switch; The measurement and acquisition module includes a high-precision sensor, an analog-to-digital converter, and an integrated digital millisecond meter; The human-computer interaction module includes a TFT true-color screen, status indicator lights, operation interface, touch panel, and communication interface; The power supply and protection module includes a UPS power supply and an overcurrent protector.

[0042] The device can be propelled by the traveling wheel 7. During travel, the traveling wheel 7 rotates, which in turn drives the drive rod 8 to rotate. The drive rod 8 then drives the first drive bevel gear 9 to rotate, which in turn drives the second drive bevel gear 10 to rotate. The second drive bevel gear 10 then drives the cross rod 11 to rotate. The cross rod 11, through its engagement with the cross hole 13, drives the third drive bevel gear 12 to rotate. The third drive bevel gear 12 drives the fourth drive bevel gear 14 to rotate, which in turn drives the first transmission gear 15 to rotate. The first transmission gear 15, through the first transmission belt 23, drives the second transmission gear 22 to rotate. The second transmission gear 22 then drives the transmission rod 20 to rotate, which in turn drives the sixth drive bevel gear 21 to rotate. This drives the corresponding drive bevel gear 19 to rotate, which in turn drives the impeller 18 to rotate. This process dissipates heat from the internal relay protection tester 4 during movement, preventing overheating and improving its lifespan and performance. The insertion and connection between the cross rod 11 and the cross hole 13 allows the entire drive box 6 to move vertically. Combined with the shock-absorbing spring 25, this reduces vibrations to the internal relay protection tester 4 during movement without affecting normal transmission and heat dissipation. The digital signal processor executes protection algorithms, generates signals, and performs logical judgments, supporting high-precision waveform fitting and real-time data processing. The logic controller coordinates the workflow of each module, such as triggering signal output, acquiring feedback signals, and determining protection action characteristics. The dual-brush voltage regulator connects to the isolation transformer, outputting adjustable AC / DC voltage (0-250V AC, 0-350VDC) and high current (0-100A). AC), current booster and rectifier filter meet different relay testing requirements, relay group switches main / auxiliary circuit output mode (such as AC / DC switching) and controls on / off state, signal switching switch dynamically switches range (such as 0-10A, 0-100A) through the panel "output selection" button, high-precision sensor monitors output current and voltage in real time and feeds the signal back to the main control unit for error calibration, analog-to-digital converter converts analog signal into digital quantity, supports 0.5 level accuracy measurement and fault waveform recording, integrated digital millisecond meter can accurately capture relay action time (such as opening delay, reclosing time), TFT true color screen visualizes output parameters, waveforms and test results, status indicator lights display real-time information such as power supply and overload, operation interface and touch panel support parameter setting and test process control, communication interface (USB, RS-485) realizes data interaction with host computer and remote upgrade, UPS power supply ensures data preservation in case of power failure, overcurrent protector trigger threshold automatically cuts off output (such as 260V overvoltage protection, 120A overcurrent protection).

[0043] The movable box 1 has a storage slot 26 inside, and a support plate 27 is rotatably mounted inside the storage slot 26. A pair of support rods 28 are rotatably connected to the support plate 27. A drive bevel gear 29 is coaxially fixedly connected to one side of the support plate 27 at its pivot point. A drive bevel gear 30 is rotatably connected inside the movable box 1. A pair of control rods 31 are rotatably mounted inside the support plate 27. A control gear 32 is coaxially fixedly connected to each control rod 31. A control belt 33 is connected to the two control gears 32. A drive bevel gear is coaxially fixedly connected to each control rod 31. Wheel 9 34, and drive bevel gear 8 30 is coaxially fixedly connected to one of the control rods 31. A pair of drive bevel gears 10 35 are rotatably connected inside the moving box 1. Each drive bevel gear 10 35 meshes with the corresponding drive bevel gear 9 34. A pair of support rods 2 36 are slidably connected to the bottom of the moving box 1. Each drive bevel gear 10 35 is coaxially fixedly connected to a control screw 37. Each control screw 37 is threadedly connected to the corresponding support rod 2 36. The surface of the support plate 27 is provided with an operating groove 38.

[0044] With the above structure, the support plate 27 can be rotated by the operator holding the operating slot 38. During the rotation of the support plate 27, the drive bevel gear 7 29 rotates, which in turn drives the drive bevel gear 8 30 to rotate. After the drive bevel gear 8 30 rotates, it will drive one of the control rods 31 to rotate. After the control rod 31 rotates, it will drive the other control gear 32 to rotate through the control gear 32 and the control belt 33, so that both control rods 31 rotate. The two control rods 31 will further drive the drive bevel gear 9 34 to rotate. The drive bevel gear 9 34 will drive the corresponding drive bevel gear 10 35 to rotate. After the drive bevel gear 10 35 rotates, it will drive the corresponding control screw 37 to rotate. The control screw 37 will further realize the extension and retraction of the support rod 2 36. When the two support rods 2 36 are extended, they will contact the ground to assist in support. When the two support rods 2 36 are retracted, they will not interfere with the movement of the device.

[0045] A transmission gear 39 is installed inside the support plate 27. The shaft of the transmission gear 39 passes through the support plate 27 and is fixedly connected to the wall of the storage groove 26. A transmission gear 40 is rotatably connected inside the support plate 27. A transmission toothed belt 41 is installed on the transmission gear 39 and the transmission gear 40. A control rod 42 is coaxially fixedly connected between the two support rods 28. One end of the control rod 42 is coaxially fixedly connected to the transmission gear 40.

[0046] With the above structure, when the support plate 27 is flipped, the transmission gear 39 and the flipped support plate 27 form a reaction force, causing the transmission gear 39 to drive the transmission gear 40 to rotate through the transmission belt 41. After the transmission gear 40 rotates, it will drive the control rod 42 to rotate. The control rod 42 will further drive the two support rods 28 to flip, so that when the support plate 27 is flipped to a horizontal state, the two support rods 28 can be at an angle perpendicular to the support plate 27, so that the two support rods 28 can contact the ground, complementing the support rod 36 mentioned above, and improving the stability effect.

[0047] A connecting arm 43 is rotatably connected to the movable box 1. A handle 44 is fixed to one end of the connecting arm 43. A transmission gear 3 45 and a transmission gear 46 are rotatably connected inside the movable box 1. The transmission gear 3 45 is coaxially fixedly connected to the rotating shaft of the connecting arm 43. The transmission gear 46 is coaxially fixedly connected to the rotating shaft of the mounting bracket 3. A transmission toothed belt 2 47 is connected to the transmission gear 3 45 and the transmission gear 46.

[0048] With the above structure, the device can be easily pushed and pulled by personnel holding the handle 44 during transportation. When it is necessary to expose the relay protection tester 4, the connecting arm 43 can be rotated. When the connecting arm 43 rotates, it will drive the transmission gear 3 45 to rotate. After the transmission gear 3 45 rotates, it will drive the transmission gear 46 to rotate through the transmission belt 2 47, thereby rotating the mounting frame 3. This allows personnel to expose the relay protection tester 4 by rotating the connecting arm 43. After the relay protection tester 4 is exposed, the relay protection device can be tested using the relay protection tester 4.

[0049] A drive rack 48 is slidably connected inside the handlebar 44. An adjustment groove 49 is provided inside the handlebar 44. A trigger block 50 is slidably connected inside the adjustment groove 49. A push spring 51 is fixed between the trigger block 50 and the bottom of the adjustment groove 49. One end of the trigger block 50 is exposed outside the handlebar 44, and the other end of the trigger block 50 is fixedly connected to the drive rack 48. A meshing gear 52 is rotatably connected inside the connecting arm 43. The meshing gear 52 meshes with the drive rack 48, and a take-up wheel 53 is coaxially fixedly connected to the meshing gear 52. A guide groove 54 is provided on the connecting arm 43. An insert block 55 is slidably connected inside the guide groove 54. A push spring 56 is fixed between the insert block 55 and the bottom of the guide groove 54, and a pull rope 57 is fixed between the insert block and the take-up wheel 53. A slot 58 is provided on the moving box 1, and the slot 58 and the insert block 55 are engaged.

[0050] With the above structure, when a person presses the trigger block 50, the trigger block 50 pushes the drive rack 48, the drive rack 48 drives the meshing gear 52 to rotate, the meshing gear 52 rotates and drives the winding wheel 53 to rotate, the winding wheel 53 rotates and pulls the plug block 55 through the pull rope 57 to perform a retraction action, thereby disengaging from the buckle engagement with the slot 58, causing the control connecting arm 43 to perform a flipping action, and releasing the trigger block 50, allowing the plug block 55 to re-engage with the slot 58, restricting the flipping action of the connecting arm 43.

[0051] The control assembly includes a control screw 59 rotatably connected within the mounting frame 3, a drive worm gear 60 coaxially fixedly connected to one end of the control screw 59, a drive worm 61 rotatably connected within the mounting frame 3, the drive worm gear 60 meshing with the drive worm 61, the control screw 59 being threadedly connected to the limit plate 5, and a control seat 62 rotatably connected to the mounting frame 3, the control seat 62 being coaxially fixedly connected to the drive worm 61.

[0052] With the above structure, the control seat 62 can be rotated by personnel. After the control seat 62 rotates, it will drive the drive worm gear 61 to rotate. After the drive worm gear 61 rotates, it will drive the drive worm wheel 60 to rotate. After the drive worm wheel 60 rotates, it will drive the control screw 59 to rotate. After the control screw 59 rotates, it will drive the limit plate 5 to move, thereby completing the clamping and fixing action of the relay protection tester 4.

[0053] The support plate 27 has a pair of guide grooves 63, and each guide groove 63 has a sliding block 64 connected in it. The storage groove 26 has a pair of slots 65 on its wall. Each block 64 is engaged with the corresponding slot 65. Each block 64 is fixed with the bottom of the corresponding guide groove and a push spring 66 is fixed between each block 64 and the bottom of the corresponding guide groove.

[0054] Using the above structure, the angle of the support plate 27 can be restricted by the insertion and engagement of the second insert 64 and the second slot 65. When the second insert 64 and the second slot 65 are inserted, the support plate 27 is restricted to a vertical storage state. When the second insert 64 and the second slot 65 are disengaged, the support plate 27 is rotated to a horizontal state. Then the second insert 64 is released, and the second insert 64 interferes with the surface of the movable box 1, thereby restricting the horizontal state of the support plate 27.

[0055] An adjusting gear 67 is rotatably connected inside the support plate 27. A winding wheel 68 is coaxially fixedly connected to the adjusting gear 67. A pull rope 69 is fixedly connected between the winding wheel 68 and the two insert blocks 64. A drive rack 70 is slidably connected to the support plate 27. The drive rack 70 meshes with the adjusting gear 67. An operating block 71 is fixed on the drive rack 70. The operating block 71 protrudes from the surface of the support plate 27.

[0056] With the above structure, the operating block 71 can drive the drive rack 70 to rotate, the drive rack 70 can drive the control gear 67 to rotate, and the control gear 67 will drive the corresponding winding wheel 68 to rotate. The winding wheel 68 will then wind up the pull rope 69, thus controlling the winding state of the control plug 64.

[0057] The mobile box 1 has multiple ventilation openings 72, each of which is connected to the heat dissipation cavity 16. The top surface of the mobile box 1 has multiple air outlets 73 that are connected to the equipment cavity 2. The top of the mobile box 1 is fixed with a regulating air duct 74. The vertical cross section of the regulating air duct 74 is wavy and pleated, and the regulating air duct 74 is connected to the air outlets 73.

[0058] With the above structure, the air in the heat dissipation cavity 16 can circulate through the vent 72 and the air outlet 73, so that the heat can be better discharged when the fan wheel 18 rotates. By connecting the air outlet 73 to the air duct 74, the air direction can be guided, so as to blow on the maintenance personnel and cool them down during the operation.

[0059] Example 2 This invention provides a performance testing method for relay protection, comprising: During transport, personnel use the mobile box to dissipate heat from the internal relay protection tester 4, preventing it from overheating. Simultaneously, the entire drive box 6 moves up and down, reducing vibration to the internal relay protection tester 4 without affecting normal transmission and heat dissipation. When the relay protection tester 4 needs to be exposed, it is clamped and fixed by the limiting plate and the inner wall of the mounting frame. The drive box rotates the mounting frame 3, allowing personnel to adjust the rotation angle to expose the relay protection tester 4. Once exposed, the relay protection device can be tested using the relay protection tester 4.

[0060] More specifically: During the transfer process, the operator holds the lever 44 to facilitate pushing and pulling the device. The traveling wheel 7 rotates during movement, which in turn drives the drive rod 8 to rotate. The drive rod 8 then drives the first drive bevel gear 9 to rotate, which in turn drives the second drive bevel gear 10 to rotate. The second drive bevel gear 10 then drives the cross rod 11 to rotate. The cross rod 11, through its engagement with the cross hole 13, drives the third drive bevel gear 12 to rotate. The third drive bevel gear 12 then drives the fourth drive bevel gear 14 to rotate, which in turn drives the first transmission gear 15 to rotate. The first transmission gear 15 then drives the transmission... The toothed belt 23 drives the transmission gear 22 to rotate. The rotation of the transmission gear 22 then drives the transmission rod 20 to rotate. The transmission rod 20 then drives the drive bevel gear 21 to rotate. The drive bevel gear 21 then drives the corresponding drive bevel gear 19 to rotate. The drive bevel gear 19 further drives the fan wheel 18 to rotate. This process dissipates heat from the internal relay protection tester 4 during movement, preventing it from overheating. Furthermore, the insertion and engagement between the cross rod 11 and the cross hole 13 allows the entire drive box 6 to move vertically. Combined with the shock-absorbing spring 25, this reduces vibration to the internal relay protection tester 4 during movement without affecting normal transmission and heat dissipation. When the relay protection tester 4 needs to be exposed, the operating block 71 drives the drive rack 2 70 to rotate, which in turn drives the control gear 67 to rotate. The rotation of the control gear 67 then drives the corresponding winding wheel 2 68 to rotate, which in turn winds up the pull rope 2 69. This controls the closing state of the control block 2 64, rotating the support plate 27 to a horizontal position. Then, the block 2 64 is released, interfering with the surface of the moving box 1, thus limiting the horizontal position of the support plate 27. By manipulating the operating slot 38, the support plate 27 is rotated. During this rotation, the drive bevel gear 7 29 rotates, which in turn drives the drive bevel gear 8 30 to rotate. After rotation, one of the control levers 31 will rotate. This rotation, via control gear 32 and control belt 33, will drive the other control gear 32 to rotate, causing both control levers 31 to rotate. These two control levers 31 then drive the drive bevel gear 9 34 to rotate, which in turn drives the corresponding drive bevel gear 10 35. The rotation of drive bevel gear 10 35 will then drive the corresponding control screw 37 to rotate. The control screw 37 further enables the extension and retraction of the support rod 2 36. When the two support rods 2 36 extend, they contact the ground for auxiliary support. When the support plate 27 is flipped, the transmission gear 5 39 and the flipping support plate 27 create a reaction force.This causes transmission gear 539 to drive transmission gear 640 to rotate via transmission belt 341. The rotation of transmission gear 640 then drives control lever 42 to rotate. Control lever 42 further drives two support rods 128 to flip, so that when support plate 27 flips to a horizontal position, the two support rods 128 can be at an angle perpendicular to support plate 27, allowing them to contact the ground. This complements support rod 236, improving stability. Then, by pressing trigger block 50, trigger block 50 pushes drive rack 148, which drives meshing gear 152 to rotate. After meshing gear 152 rotates... This will cause the winding wheel 53 to rotate. After the winding wheel 53 rotates, it will pull the insert block 55 via the pull rope 57, causing it to retract and disengage from the slot 58. At this point, the connecting arm 43 can be rotated. The rotation of the connecting arm 43 will drive the transmission gear 45 to rotate. The rotation of the transmission gear 45 will then drive the transmission gear 46 via the transmission belt 47, thus rotating the mounting bracket 3. This allows personnel to expose the relay protection tester 4 by adjusting the rotation angle of the connecting arm 43. Once the relay protection tester 4 is exposed, the relay protection device can be tested using it.

[0061] In summary, this invention provides the device with the ability to move by means of the traveling wheel 7. During movement, the traveling wheel 7 rotates, which in turn drives the drive rod 8 to rotate. The drive rod 8 then drives the first drive bevel gear 9 to rotate, which in turn drives the second drive bevel gear 10 to rotate. The second drive bevel gear 10 then drives the cross rod 11 to rotate. The cross rod 11, through its engagement with the cross hole 13, drives the third drive bevel gear 12 to rotate. The third drive bevel gear 12 then drives the fourth drive bevel gear 14 to rotate. The fourth drive bevel gear 14 then drives the first transmission gear 15 to rotate. The first transmission gear 15, through the first transmission belt 23, drives the second transmission gear 22 to rotate. When the transmission gear 22 rotates, it drives the transmission rod 20 to rotate. The transmission rod 20 then drives the drive bevel gear 21 to rotate, which in turn drives the corresponding drive bevel gear 19 to rotate. The drive bevel gear 19 then drives the fan wheel 18 to rotate. This process heats up the internal relay protection tester 4 during movement, preventing it from overheating and improving its lifespan and performance. Furthermore, the interlocking connection between the cross rod 11 and the cross hole 13 allows the entire drive box 6 to move up and down. Combined with the shock-absorbing spring 25, this reduces vibrations to the internal relay protection tester 4 during movement without affecting normal transmission and heat dissipation.

[0062] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the scope of the invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0063] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can be appropriately combined to form other embodiments that can be understood by those skilled in the art. The above content is only for illustrating the technical concept of the present invention and should not be construed as limiting the scope of protection of the present invention. Any modifications made based on the technical concept proposed in this invention shall fall within the scope of protection of the claims of this invention.

Claims

1. A performance testing device for relay protection, characterized in that, The device includes a mobile box and an equipment cavity inside the mobile box. A mounting frame is rotatably connected inside the equipment cavity. A relay protection tester is mounted on the mounting frame. A limit plate is slidably connected to the mounting frame, and a control component for controlling the movement of the limit plate is provided on the mounting frame. The limit plate and the inner wall of the mounting frame clamp and fix the relay protection tester. A drive box is slidably connected to the bottom of the mobile box. Both sides of the drive box are provided with travel wheels. A drive rod is rotatably connected inside the drive box, and both ends of the drive rod are coaxially fixed to the corresponding travel wheels. The relay protection tester includes a main control unit, a signal generation module, an output control module, a measurement and acquisition module, a human-machine interaction module, and a power supply and protection module. The main control unit includes a digital signal processor and a logic control board, and the logic control board is electrically connected to each module and the digital signal processor. The signal generation module includes a fuse, a dual carbon brush voltage regulator, a current booster, and a rectifier filter. The output control module includes a relay group and a signal switching switch; The measurement and acquisition module includes a high-precision sensor, an analog-to-digital converter, and an integrated digital millisecond meter; The human-computer interaction module includes a TFT true-color screen, status indicator lights, an operation interface, a touch panel, and a communication interface; The power supply and protection module includes a UPS power supply and an overcurrent protector.

2. The performance testing device for relay protection according to claim 1, characterized in that, A first drive bevel gear is coaxially fixedly connected to the drive rod. A second drive bevel gear is rotatably connected inside the drive housing. The first drive bevel gear meshes with the second drive bevel gear. A cross rod is coaxially fixedly connected to the second drive bevel gear. A third drive bevel gear is rotatably connected inside the moving housing. A cross hole is opened at the wheel core of the third drive bevel gear, and the cross rod is inserted into the cross hole. A fourth drive bevel gear is rotatably connected inside the moving housing. A first transmission gear is coaxially fixedly connected to the fourth drive bevel gear. A heat dissipation cavity is provided inside the moving housing. A heat dissipation frame is fixed inside the heat dissipation cavity. Multiple fan wheels are rotatably arranged inside the heat dissipation frame. The heat dissipation cavity is connected to the equipment cavity. Multiple fifth drive bevel gears are rotatably connected inside the moving housing. Each drive bevel gear five is coaxially fixedly connected to the corresponding wind turbine. A transmission rod is rotatably connected inside the moving box. Multiple drive bevel gears six are coaxially fixedly connected to the transmission rod, and each drive bevel gear six meshes with the corresponding drive bevel gear five. A transmission gear two is coaxially fixedly connected to the transmission rod. A transmission toothed belt one is connected to the transmission gear one and the transmission gear two. A pair of stabilizing rods are fixed on the left and right sides of the top surface of the drive box. Each stabilizing rod is slidably connected to the moving box, and a shock-absorbing spring is sleeved on each stabilizing rod. The top end of each shock-absorbing spring is fixedly connected to the bottom surface of the moving box, and the bottom end of each shock-absorbing spring is fixedly connected to the top surface of the drive box.

3. The performance testing device for relay protection according to claim 1, characterized in that, The movable box has a storage slot inside, and a support plate is rotatably mounted inside the storage slot. A pair of support rods are rotatably connected to the support plate. A drive bevel gear seven is coaxially fixedly connected to a pivot on one side of the support plate. A drive bevel gear eight is rotatably connected inside the movable box. A pair of control rods are rotatably connected inside the support plate. Each control rod is coaxially fixedly connected to a control gear. A control belt is connected to the two control gears. A drive bevel gear nine is coaxially fixedly connected to each control rod. The drive bevel gear eight is coaxially fixedly connected to one of the control rods. A pair of drive bevel gears ten are rotatably connected inside the movable box. Each drive bevel gear ten meshes with a corresponding drive bevel gear nine. A pair of support rods two are slidably connected to the bottom of the movable box. An adjustment screw is coaxially fixedly connected to each drive bevel gear ten. Each adjustment screw is threadedly connected to a corresponding support rod two. An operating groove is provided on the surface of the support plate.

4. The performance testing device for relay protection according to claim 3, characterized in that, The support plate is equipped with a transmission gear five. The shaft of the transmission gear five passes through the support plate and is fixedly connected to the wall of the storage groove. The support plate is also rotatably connected with a transmission gear six. The transmission gear five and the transmission gear six are equipped with a transmission toothed belt three. A control rod is coaxially fixedly connected between the two support rods one. One end of the control rod is coaxially fixedly connected to the transmission gear six.

5. The performance testing device for relay protection according to claim 3, characterized in that, The support plate has a pair of guide grooves II, and each guide groove II has a slidably connected insert block II. The storage groove has a pair of slots II on its groove wall. Each insert block II is engaged with the corresponding slot II. A push spring III is fixed between each insert block II and the bottom of the corresponding guide groove.

6. The performance testing device for relay protection according to claim 5, characterized in that, An adjusting gear is rotatably connected inside the support plate. A winding wheel is coaxially fixedly connected to the adjusting gear. Pull ropes are fixedly connected between the winding wheel and the two insert blocks. A drive rack is slidably connected to the support plate. The drive rack meshes with the adjusting gear. An operating block is fixed on the drive rack, and the operating block protrudes from the surface of the support plate.

7. The performance testing device for relay protection according to claim 1, characterized in that, A connecting arm is rotatably connected to the movable box, and a handle is fixed to one end of the connecting arm. A transmission gear three and a transmission gear four are rotatably connected inside the movable box. The transmission gear three is coaxially fixedly connected to the rotating shaft of the connecting arm, and the transmission gear four is coaxially fixedly connected to the rotating shaft of the mounting frame. A transmission toothed belt two is connected to the transmission gear three and the transmission gear four.

8. The performance testing device for relay protection according to claim 7, characterized in that, A drive rack is slidably connected inside the handlebar. An adjustment groove is provided inside the handlebar, and a trigger block is slidably connected inside the adjustment groove. A push spring is fixed between the trigger block and the bottom of the adjustment groove. One end of the trigger block is exposed outside the handlebar, and the other end of the trigger block is fixedly connected to the drive rack. A meshing gear is rotatably connected inside the connecting arm. The meshing gear meshes with the drive rack, and a take-up wheel is coaxially fixedly connected to the meshing gear. A guide groove is provided on the connecting arm, and an insert block is slidably connected inside the guide groove. A push spring is fixed between the insert block and the bottom of the guide groove, and a pull rope is fixed between the insert block and the take-up wheel. A slot is provided on the moving box, and the slot and the insert block engage in a snap-fit ​​relationship.

9. A performance testing device for relay protection according to claim 1, characterized in that, The control assembly includes a control screw rotatably connected within the mounting frame, a drive worm gear coaxially fixedly connected to one end of the control screw, a drive worm gear rotatably connected within the mounting frame, the drive worm gear meshing with the drive worm gear, the control screw threadedly connected to a limit plate, and a control seat rotatably connected to the mounting frame, the control seat coaxially fixedly connected to the drive worm gear.

10. A performance testing method for relay protection, characterized in that, This method is based on a performance testing device for relay protection according to any one of claims 1 to 9, comprising: During transport, personnel use the mobile container to dissipate heat from the internal relay protection tester, preventing it from overheating. The vertical movement of the entire drive box reduces vibration to the tester without affecting normal heat dissipation. When the tester needs to be exposed, it is clamped and secured by a limiting plate and the inner wall of the mounting frame. The drive box then rotates the mounting frame, allowing personnel to adjust the rotation angle to expose the tester. Once exposed, the relay protection device can be tested using the relay protection tester.

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