A current performance testing device for an electrical power grid

Abstract

The application belongs to the technical field of electric power testing, and particularly relates to a current performance testing device for an electric power grid, which comprises a testing box composed of a main box body and a box cover, a testing equipment rack fixedly installed on the inner side of the main box body, and a heat dissipation opening arranged on the surface of the testing equipment rack; a heat dissipation mechanism installed at the end of the testing box and comprising an air inlet box and an air outlet box, an air filter element arranged in the air inlet box, and an air outlet fan arranged in the air outlet box; the problems to be solved in the application are insufficient maintenance and testing flexibility, insufficient heat dissipation performance, and poor wiring stability; and the solution of the application is that the insulation rotating column of the connecting mechanism is rotated to drive the rotation of the wiring seat and the testing seat, the electric wire of the power system is connected and used by skipping the testing device through the wiring seat, the electric wire of the power system is connected and used with the testing equipment in the testing equipment rack through the testing seat, the adjustment is convenient and fast during use, and the operation of the power system itself is not affected by the testing device.

Description

Technical Field

[0001] This invention belongs to the field of power testing technology, specifically relating to a current performance testing device for a power grid. Background Technology

[0002] In power systems, current performance testing devices are crucial equipment for ensuring the safe and stable operation of the power grid. They are primarily used to monitor key parameters such as current, voltage, and power in real time to promptly detect anomalies such as overload, short circuit, and harmonics. However, traditional current testing devices have several limitations in practical applications, mainly in the following aspects:

[0003] 1. Insufficient maintenance and testing flexibility

[0004] Because the testing equipment is rigidly connected to the power system, it requires power outage during maintenance, calibration or replacement, which affects the continuity of power supply and makes it difficult to meet the requirements of modern power systems for high reliability and uninterrupted operation.

[0005] 2. Insufficient heat dissipation performance affects long-term stability.

[0006] When a current testing device operates under high load for a long time, it will generate a lot of heat. If the heat dissipation design is not good, it may cause the equipment to overheat, reduce the measurement accuracy, or even accelerate the aging of components and shorten the service life.

[0007] 3. Poor wiring stability can easily lead to poor contact.

[0008] Traditional wiring methods often rely on bolt fixing or simple plug-in connection, which are prone to loosening under environments such as vibration and temperature changes, resulting in increased contact resistance, affecting the accuracy of test data, and even causing local overheating;

[0009] Therefore, it is necessary to design a current performance testing device for power grids to solve the above problems. Summary of the Invention

[0010] The purpose of this invention is to provide a current performance testing device for power grids to solve the problems mentioned in the background art.

[0011] To achieve the above objectives, the present invention provides the following technical solution: a current performance testing device for a power grid, comprising:

[0012] The test chamber consists of a main body and a cover. A test equipment rack is fixedly installed inside the main body, and the surface of the test equipment rack is provided with heat dissipation vents.

[0013] A heat dissipation mechanism, installed at the end of the test chamber, includes an air inlet box and an exhaust box. The air inlet box is equipped with an air filter, and the exhaust box is equipped with an exhaust fan.

[0014] The wiring mechanism, installed on the upper side of the main enclosure, includes an outer casing, a reinforcing inner ring, an elastic cloth cover, and an elastic shrink band, and is used to reinforce the wire connections of the power system.

[0015] The connection mechanism is fixed to the upper side of the main housing by the installation mechanism, and includes an insulating shell, a connection seat, an insulating rotating column, a terminal block and a test seat. The insulating rotating column is driven to rotate by the adjustment box to switch the connection state between the terminal block or the test seat and the connection seat.

[0016] The air guide plate is fixed inside the main housing and guides the airflow to be discharged from the heat dissipation mechanism.

[0017] Preferably, the adjustment box includes:

[0018] Adjust the motor; the output shaft is connected to the adjusting worm gear.

[0019] The adjusting shaft has an adjusting worm gear at one end that meshes with the adjusting worm, and an adjusting gear at the other end;

[0020] An adjusting gear ring, fixed to the outside of the insulating rotating column and meshing with the adjusting gear, is used to drive the insulating rotating column to rotate.

[0021] Preferably, both the terminal block and the test socket are provided with connecting rods at their ends, and are covered with insulating springs on the outside. The test socket is provided with a connecting rod on its inner side, which is connected to the test equipment on the inner side of the test equipment frame. One end of the insulating spring is supported on the test socket or the terminal block to ensure electrical contact stability.

[0022] Preferably, the end of the insulating shell is provided with a connecting plate for fixing the wires of the power system, and one end of the connecting plate is connected to the connecting seat.

[0023] Preferably, the inner wall of the reinforced inner ring is provided with a spiral spring piece, one end of which is fixed to the outside of the elastic contraction band to enhance the clamping force on the wire.

[0024] Preferably, the lower end of the outer shell of the box is provided with a winding box, which contains a winding column driven by a winding motor. The surface of the winding column is provided with guide plates, and the tension of the elastic shrink belt is controlled by the winding column through a retraction rope.

[0025] Preferably, one end of the retractable pull rope is fixed to the inside of the elastic retractable belt, and the other end is connected to the winding post after passing through the guide post and guide tube, so as to ensure that the winding direction of the pull rope is stable.

[0026] Preferably, the air inlet box is provided on the upper side, and the exhaust box is provided with an air extraction port and an air outlet on the upper and lower sides, respectively. The air extraction port is aligned with the test equipment frame for efficient heat dissipation.

[0027] Preferably, the installation mechanism includes a mounting base and a fixing base, which are fixed together with a locking plate through a locking groove. One end of the fixing base is provided with a limit block, and the inner side of the fixing base is provided with a vent hole for auxiliary heat dissipation.

[0028] Compared with the prior art, the beneficial effects of the present invention are:

[0029] 1. Intelligent and rapid switching ensures uninterrupted power grid operation: Through an innovative connection mechanism design, a high-precision worm gear transmission system drives the insulated rotating column, achieving seamless switching between the terminal block and the test socket. Switching time is shortened, allowing the power system to connect and disconnect test devices without power interruption, significantly reducing downtime and improving power supply continuity.

[0030] 2. Multi-level dynamic reinforcement ensures stable and reliable wiring: The wiring mechanism integrates a spiral spring and a motor-driven elastic retractable belt. The retractable rope is controlled by the winding motor to form a progressive clamping force. Combined with silicone rubber composite insulating springs, it effectively resists vibration and temperature changes.

[0031] 3. High-efficiency directional heat dissipation, extending equipment lifespan: The heat dissipation mechanism adopts a laminar flow air guide plate combined with a dual-channel forced air cooling system. The air inlet box is equipped with a composite filter module, and the exhaust fan directionally draws heat from the test equipment rack area. Attached Figure Description

[0032] Figure 1 This is a schematic diagram of the structure of the present invention;

[0033] Figure 2 This is a schematic diagram of the internal structure of the test chamber of the present invention;

[0034] Figure 3 This is a schematic diagram of the outer shell structure of the box according to the present invention;

[0035] Figure 4 This is a schematic diagram of the winding box structure of the present invention;

[0036] Figure 5 This is a schematic diagram of the elastic contraction band structure of the present invention;

[0037] Figure 6 This is a schematic diagram of the connection mechanism structure of the present invention;

[0038] Figure 7 For the present invention Figure 6 Enlarged structural diagram at point A in the middle;

[0039] Figure 8 This is a schematic diagram of the test seat structure of the present invention;

[0040] Figure 9 This is a schematic diagram of the insulating rotating column structure of the present invention;

[0041] Figure 10 This is a schematic diagram of the air intake box structure of the present invention;

[0042] Figure 11 This is a schematic diagram of the exhaust box structure of the present invention;

[0043] Figure 12 This is a schematic diagram of the test equipment rack structure of the present invention;

[0044] Figure 13 This is a schematic diagram of the installation structure of the present invention;

[0045] In the diagram: 1. Test box; 11. Main box body; 12. Box cover; 13. Test equipment rack; 14. Heat dissipation vent; 2. Heat dissipation mechanism; 20. Air guide plate; 21. Air inlet box; 211. Air filter element; 212. Air inlet; 22. Exhaust box; 221. Air extraction port; 222. Exhaust fan; 223. Air outlet; 3. Wiring mechanism; 31. Box shell; 32. Reinforced inner ring; 33. Spiral spring; 34. Elastic cloth cover; 35. Elastic shrink belt; 36. Shrink pull rope; 37. Rewind box; 371. Rewind motor; 372. Rewind column; 373. Guide plate; 38. 39. Guide column; 4. Guide tube; 4. Connecting mechanism; 41. Insulating shell; 42. Connecting pressure plate; 43. Connecting seat; 44. Insulating rotating column; 45. Terminal block; 46. Test seat; 47. Adjusting box; 471. Adjusting motor; 472. Adjusting worm gear; 473. Adjusting turbine; 474. Adjusting shaft; 475. Adjusting gear; 476. Adjusting gear ring; 48. Connecting rod; 481. Connecting top rod; 482. Insulating spring; 5. Mounting mechanism; 51. Mounting seat; 52. Fixing seat; 53. Engaging groove; 54. Engaging plate; 55. Limiting block; 56. Vent hole. Detailed Implementation

[0046] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0047] Example 1: Please refer to Figures 1 to 13The present invention provides a technical solution: a current performance testing device for a power grid, comprising a test box 1, the test box 1 comprising a main box body 11 and a box cover 12 mounted on the main box body 11, a test equipment rack 13 fixedly mounted on the inner side of the main box body 11, a heat dissipation vent 14 provided on the surface of the test equipment rack 13, a heat dissipation mechanism 2 provided at the end of the test box 1, and a wiring mechanism 3 and a connection mechanism 4 mounted on the upper inner side of the main box body 11, the connection mechanism 4 being mounted inside the main box body 11 via a mounting mechanism 5;

[0048] The connecting mechanism 4 includes an insulating shell 41 fixedly installed on the upper inner side of the main housing 11. A connecting seat 43 is fixedly installed on the inner side of the insulating shell 41. An insulating rotating column 44 is rotatably installed in the middle of the inner side of the insulating shell 41. A terminal block 45 and a test seat 46 are provided on both sides of the insulating rotating column 44, and the positions of the terminal block 45 and the test seat 46 correspond to the positions between the terminal block 45 and the test seat 46 and the connecting seat 43. A connecting rod 48 is provided on the inner side of the test seat 46, and the connecting rod 48 is connected to the test equipment inside the test equipment frame 13. An adjusting box 47 is provided at both ends of the insulating rotating column 44, and an adjusting box 47 is fixedly installed on the lower inner side of the adjusting box 47. Motor 471, with an adjusting worm gear 472 fixedly mounted on its output shaft. An adjusting shaft 474 is rotatably mounted on the upper end of the adjusting box 47. An adjusting worm gear 473 is fixedly mounted on one end of the adjusting shaft 474, corresponding to the position of the adjusting worm gear 472. The adjusting worm gear 473 meshes with the adjusting worm gear 472. An adjusting gear 475 is fixedly mounted on the other end of the adjusting shaft 474. An adjusting gear ring 476 is fixedly mounted on the outer side of the insulated rotating column 44, meshing with the adjusting gear 475. The transmission ratio between the adjusting worm gear 472 and the adjusting worm gear 473 is 1:15. The gear ratio between 475 and the adjusting gear ring 476 is 1:3, forming a high-precision angle control system. The adjusting motor 471 drives the adjusting worm gear 472 to rotate, which in turn drives the adjusting worm gear 473 and the adjusting shaft 474 to rotate. The adjusting shaft 474 drives the adjusting gear 475 to rotate, which in turn drives the adjusting gear ring 476 and the insulating rotating column 44 to rotate. The insulating rotating column 44 drives the terminal block 45 and the test seat 46 to rotate. The terminal block 45 moves out from between the connecting seats 43, and the test seat 46 moves into between the connecting seats 43. Both the terminal block 45 and the connecting rod 48 have connecting push rods 481 at their ends. An insulating spring 482 is provided on the outside of the connecting rod 481. One end of the insulating spring 482 is supported on the test seat 46 and the terminal block 45. The contact pressure between the connecting rod 481 and the insulating spring 482 is 5N. The insulating spring 482 is made of a composite material of silicone rubber and carbon nanotubes with an elastic modulus of 7MPa. During use, the elastic force of the insulating spring 482 and the connecting rod 481 can be used to press it onto the connecting seat 43. A connecting pressure plate 42 is provided at the end of the insulating shell 41. One end of the connecting pressure plate 42 is connected to one end of the connecting seat 43. During use, the connecting pressure plate 42 can be used to easily connect the wires of the power system.

[0049] The mounting mechanism 5 includes a mounting base 51 mounted on one side of the insulating shell 41 and a fixing base 52 mounted on one side of the mounting base 51. The mounting base 51 has a locking groove 53 on one side, and the fixing base 52 has a locking plate 54 on one side. A limit block 55 is provided at one end of the fixing base 52, and a vent hole 56 is provided on the inner side of the fixing base 52. When installing and using the insulating shell 41, it is installed by locking it with the locking plate 54 through the locking groove 53 and the installation is completed by the limit block 55. The installation and use are more convenient and quick, and the vent hole 56 facilitates ventilation and heat dissipation.

[0050] As can be seen from the above description, the present invention has the following beneficial effects: when in use, the insulated rotating column 44 of the connecting mechanism 4 rotates to drive the terminal block 45 and the test socket 46 to rotate. The terminal block 45 allows the power system wires to bypass the test device for connection and use. The test socket 46 allows the power system wires to connect and use with the test equipment in the test equipment rack 13. It is convenient and quick to adjust during use, and avoids the test device from affecting the operation of the power system itself.

[0051] Example 2: Please refer to Figures 1 to 13As shown, based on Embodiment 1, the present invention provides a technical solution: the wiring mechanism 3 includes a housing 31 fixed to the inner wall of the test box 1. A perforation is provided on the outer surface of the main housing 11 corresponding to the position of the housing 31. A reinforcing inner ring 32 is provided on the inner side of the housing 31, and the position of the reinforcing inner ring 32 corresponds to the position of the perforation. An elastic cloth cover 34 is provided on the inner side of the reinforcing inner ring 32, and an elastic shrink band 35 is provided on the inner side of the elastic cloth cover 34. The power system wires are connected to the connecting pressure plate 42 through the perforation. The elastic cover 34 and elastic shrink band 35 facilitate stable installation on the wire. A spiral spring 33 is fixedly installed on the inner wall of the reinforced inner ring 32. One end of the spiral spring 33 is fixed to the outside of the elastic shrink band 35, and the spiral spring 33 has an involute spiral structure with a spiral angle of 30° and a spiral spacing of 6mm, forming a progressive clamping force distribution with the elastic shrink band 35. This allows the elastic shrink band 35 to be pre-pressed onto the wire during use. A winding box 37 is fixedly installed at the lower end of the outer shell 31. The lower inner end of the winding box 37... A take-up motor 371 is fixedly installed, and a take-up column 372 is fixedly installed on the output shaft of the take-up motor 371. A shrink pull rope 36 is provided on the outside of the take-up column 372. One end of the shrink pull rope 36 is installed on the inside of the elastic shrink belt 35. The take-up motor 371 drives the take-up column 372 to rotate and cooperate with the guide plate 373 to wind up the shrink pull rope 36. The groove between the guide plates 373 is 3mm deep and the pitch is 10mm, forming a self-centering take-up system with the shrink pull rope 36. The shrink pull rope 36 pulls the shrink elastic shrink belt 35 to shrink the outer shell 31 of the box. The internal structure is equipped with guide posts 38, and the retractable pull rope 36 is located between the guide posts 38. During use, the guide posts 38 guide the retractable pull rope 36 to move more stably. The surface of the winding post 372 is provided with guide plates 373, and a guide tube 39 is provided on one side of the elastic retractable band 35. One end of the retractable pull rope 36 passes through the guide tube 39 and is installed inside the elastic retractable band 35. During use, the guide tube 39 facilitates the movement of the retractable pull rope 36 to tighten the elastic retractable band 35, thereby making the elastic retractable band 35 more stable around the wire.

[0052] The wiring mechanism 3 using the above technical solution connects the power system wires to the connection mechanism 4 when the power system wires are inserted into the inside of the test box 1 during installation. The wiring mechanism 3 can reinforce the wires, thereby ensuring that the wires are more stable during installation and use.

[0053] Further reading is available. Figures 1 to 13The heat dissipation mechanism 2 includes an air intake box 21 installed on the top of the inner side of the test chamber 1 and an exhaust box 22 installed on the bottom of the inner side of the test chamber 1. An air filter element 211 is installed inside the air intake box 21, and an exhaust fan 222 is installed inside the exhaust box 22. During testing, the exhaust fan 222 runs to allow airflow to pass through the main chamber 11, thereby carrying away heat for heat dissipation. The air is filtered by the air filter element 211 to reduce dust entering the main chamber 11. An air inlet 212 is provided on the upper side of the air intake box 21 and is fixed to the upper end of the main chamber 11. The air filter element 211 passes through the air intake box 21 and communicates with the interior of the main chamber 11. The air filter element 211 has a multi-layer composite structure, including an activated carbon layer, a HEPA filter layer, and a static precipitator. The electro-adsorption layer has a filtration efficiency of over 99.97%. The exhaust box 22 has an air intake port 221 and an air outlet 223 on its upper and lower sides, respectively. The position of the air intake port 221 corresponds to the position of the test equipment frame 13. The air outlet 223 is fixedly installed at the lower end of the main box 11, which facilitates the installation and use of the air intake box 21 and the exhaust box 22. The air guide plate 20 is fixedly installed on the inner side of the main box 11. The lower end of the air guide plate 20 corresponds to the position of the exhaust box 22. The air guide plate 20 is connected to the heat dissipation mechanism 2. During use, the air guide plate 20 facilitates rapid airflow and heat dissipation. The air guide plate 20 has a curved flow guiding structure with a radius of curvature of 150mm. It works with the heat dissipation mechanism 2 to form a laminar flow heat dissipation airflow, which increases the airflow speed by 35%.

[0054] The heat dissipation mechanism 2 using the above technical solution allows air to be supplied and exhausted into the test chamber 1 through the air inlet box 21 and the exhaust box 22 during use. When the air flows through the test chamber 1, it can carry away the heat from the test equipment frame 13 and the connecting mechanism 4, thereby ensuring that the heat generated by the test device is quickly dissipated during use.

[0055] The working principle and usage process of this invention are as follows: During use, the main housing 11 is installed in the designated position. The power system wires pass through the wiring mechanism 3 and connect to the connecting pressure plate 42. When installing the wires, they pass through the inner side of the elastic shrink band 35. The elastic force of the spiral spring plate 33 pushes the elastic shrink band 35 onto the wires. Simultaneously, the winding motor 371 drives the winding column 372 to rotate, cooperating with the guide plate 373 to wind up the shrink pull rope 36. The shrink pull rope 36 pulls the shrink elastic shrink band 35, thereby tightening the elastic shrink band 35 onto the wires and fixing it in place. When current testing is not required, the terminal block 45 only needs to be connected between the connecting blocks 43 to maintain normal current flow. When current performance testing is required, the adjusting motor 471 drives the adjusting worm gear 472 to rotate. The adjusting worm gear 472 drives the adjusting turbine 473 and the adjusting shaft 474 to rotate. The adjusting shaft 474 drives the adjusting gear 4... Rotating 75, the adjusting gear 475 drives the adjusting gear ring 476 and the insulating rotating column 44 to rotate. The insulating rotating column 44 drives the terminal block 45 and the test seat 46 to rotate. The terminal block 45 moves out from between the connecting seats 43, and the test seat 46 moves into between the connecting seats 43. The test seat 46 is connected to the test equipment in the test equipment rack 13 through the connecting top rod 481 and the connecting rod 48 on the inner side of the test seat 46, which mainly includes an ammeter, a power analyzer, and an oscilloscope. During use, the internal temperature sensor can detect the temperature. During the test, the exhaust fan 222 runs to make the airflow flow from the main housing 11, thereby carrying away heat for heat dissipation. After the test is completed, the adjusting worm gear 472 driven by the adjusting motor 471 rotates in the reverse direction, thereby driving the terminal block 45 and the test seat 46 to rotate in the reverse direction, so that the terminal block 45 moves back between the connecting seats 43 to disconnect the test device and connect the wires of the power system.

[0056] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0057] The above description is only used to illustrate the technical solution of the present invention and is not intended to limit it. Any other modifications or equivalent substitutions made by those skilled in the art to the technical solution of the present invention, as long as they do not depart from the spirit and scope of the technical solution of the present invention, should be covered within the scope of the claims of the present invention.

Claims

1. A current performance testing device for an electrical power grid, characterized by, Include: Test box (1) is constituted by main box (11) and box cover (12), the inner side of the main box (11) is fixedly installed with test equipment rack (13), the surface of the test equipment rack (13) is equipped with heat dissipation port (14); Heat dissipation mechanism (2) is installed at the end of test box (1), including air inlet box (21) and exhaust box (22), the air inlet box (21) is equipped with air filter (211) inside, the exhaust box (22) is equipped with exhaust fan (222) inside; Wiring mechanism (3) is installed on the inner side of the upper end of main box (11), including box body shell (31), reinforcing inner ring (32), elastic cloth cover (34) and elastic shrinkable belt (35), for reinforcing the wire connection of power system;Wiring mechanism (3) includes box body shell (31) fixed on the inner wall of test box (1), the outer surface of main box (11) is provided with a perforation corresponding to the position of box body shell (31), the inner side of box body shell (31) is provided with reinforcing inner ring (32), and the position of reinforcing inner ring (32) corresponds to the position of perforation, the inner side of reinforcing inner ring (32) is provided with elastic cloth cover (34), and the inner side of elastic cloth cover (34) is provided with elastic shrinkable belt (35); Connecting mechanism (4) is fixed on the inner side of the upper end of main box (11) through mounting mechanism (5), including insulating shell (41), connecting seat (43), insulating rotating column (44), wiring seat (45) and test seat (46), the insulating rotating column (44) is driven to rotate by adjusting box (47), to switch the connection state of wiring seat (45) or test seat (46) and connecting seat (43), connecting mechanism (4) includes insulating shell (41) fixedly installed on the inner side of the upper end of main box (11), connecting seat (43) is fixedly installed on the inner side of insulating shell (41), insulating rotating column (44) is rotatably installed on the inner side of insulating shell (41), wiring seat (45) and test seat (46) are arranged on the both sides of insulating rotating column (44), and the positions of wiring seat (45) and test seat (46) correspond to the position between connecting seat (43), the inner side of test seat (46) is provided with connecting rod (48), the connecting rod (48) is connected with the test equipment in the inner side of test equipment rack (13), the both ends of insulating rotating column (44) are provided with adjusting box (47), adjusting motor (471) is fixedly installed on the inner side of adjusting box (47), adjusting worm (472) is fixedly installed on the output shaft of adjusting motor (471), adjusting rotating shaft (474) is rotatably installed on the upper end of adjusting box (47), adjusting turbine (473) is fixedly installed on one end of adjusting rotating shaft (474) corresponding to the position of adjusting worm (472), adjusting turbine (473) is engaged on adjusting worm (472), adjusting gear (475) is fixedly installed on the other end of adjusting rotating shaft (474), adjusting gear ring (476) is fixedly installed on the outer side of insulating rotating column (44), adjusting gear ring (476) is engaged on adjusting gear (475) through gear teeth The air guide plate (20) is fixed in the main box (11) and guides the air flow to discharge from the heat dissipation mechanism (2).

2. The current performance test apparatus according to claim 1, wherein The end of the terminal seat (45) and the test seat (46) is provided with a connecting top rod (481), and the outer side is covered with an insulating spring (482). The inner side of the test seat (46) is provided with a connecting rod (48), which is connected with the test equipment in the test equipment rack (13). One end of the insulating spring (482) is supported on the test seat (46) or the terminal seat (45), which ensures the stability of the electrical contact.

3. The current performance test apparatus of claim 1, wherein The end of the insulating shell (41) is provided with a connecting pressure piece (42) for fixing the wire of the power system, and one end of the connecting pressure piece (42) is connected with the connecting seat (43).

4. The current performance test apparatus of claim 1, wherein The inner wall of the reinforcing inner ring (32) is provided with a spiral spring (33) fixed to the outer side of the elastic contraction belt (35) for enhancing the clamping force of the wire.

5. The current performance test apparatus of claim 1, wherein The lower end of the box body shell (31) is provided with a winding box (37) containing a winding column (372) driven by a winding motor (371). The surface of the winding column (372) is provided with a guide piece (373), and the winding column (372) controls the tightness of the elastic contraction belt (35) through the contraction pull rope (36).

6. The current performance test apparatus according to claim 5, wherein One end of the contraction pull rope (36) is fixed to the inner side of the elastic contraction belt (35), and the other end is connected to the winding column (372) after winding through the guide column (38) and the guide pipe (39), which ensures the stability of the pull rope winding direction.

7. The current performance test apparatus of claim 1, wherein The upper side of the air inlet box (21) is provided with an air inlet (212), and the upper and lower sides of the exhaust box (22) are respectively provided with an air suction port (221) and an air outlet (223). The air suction port (221) is aligned with the position of the test equipment rack (13) for efficient heat dissipation.

8. The current performance test apparatus of claim 1, wherein The mounting mechanism (5) includes a mounting seat (51) and a fixing seat (52) which are fixed by cooperating with the clamping groove (53) and the clamping plate (54). One end of the fixing seat (52) is provided with a limiting block (55), and the inner side of the fixing seat (52) is provided with a ventilation hole (56) for auxiliary heat dissipation.

Images