Double-station switching power supply test tool

Abstract

The invention discloses a double-station switching power supply test tool, which belongs to the technical field of power supply test devices and comprises a shell, a double-control switch is supported and connected in the shell through a bearing table, and a wiring end of the double-control switch is connected in series with a voltmeter through an ampere meter and forms an independent closed loop through a bulb on a power supply. The ammeter and the voltmeter are used for measuring a current value and a voltage value in the closed loop; and the temperature adjusting mechanism comprises a ventilation hood arranged in the shell, the fixing plate is connected with an abutting plate in a detachable installation mode, and the outer wall of the abutting plate is provided with a bimetallic strip in a limiting connection mode. The technical problems that according to an existing temperature adjusting mechanism, a vent hole always needs to be in an open state, however, the open state is not beneficial for guaranteeing the sealing performance in the device, dust is prone to being accumulated in the device in a non-working state, and then the subsequent electrostatic phenomenon is caused can be solved.

Description

Technical Field

[0001] This invention belongs to the technical field of power supply testing devices, specifically relating to a dual-station switching power supply testing fixture. Background Technology

[0002] A duplex switch is a switch with two independent operating positions, each with its own electrical connection. When the switch is in one position, one circuit is open while the other is closed; and vice versa. This design allows a duplex switch to control two independent circuits or devices, such as dual-circuit lighting controls and motorized curtains.

[0003] Dual-station power supply testing mainly includes the following items: Input power supply testing: Tests the power supply device's ability to receive input power, including voltage range, frequency, waveform distortion, etc.; Output power supply testing: Tests the power supply device's output parameters such as voltage, current, and power to ensure its stability and accuracy under various load conditions.

[0004] Environmental adaptability testing of dual-station switching power supplies includes temperature cycling tests and humidity tests to evaluate the performance of the power supply under different environmental conditions. This means testing the current, voltage, and power of the power supply under different temperature and humidity environments. However, existing temperature control mechanisms often require the ventilation holes to be kept open to ensure proper ventilation and heat dissipation. This open state is detrimental to ensuring the internal sealing of the device. When not in operation, dust easily accumulates inside, leading to subsequent static electricity issues. Furthermore, setting up an automatic induction heat dissipation structure is complex, increasing production costs and compromising device safety. Additionally, when adjusting humidity, the humidifier needs continuous water replenishment, which is inconvenient for personnel and affects work efficiency. Summary of the Invention

[0005] The purpose of this invention is to provide a dual-station switching power supply testing fixture to solve the technical problem that existing temperature regulation mechanisms often require the ventilation holes to be kept open, but this open state is not conducive to ensuring the sealing of the device. When not in operation, dust easily accumulates inside the device, which in turn causes subsequent static electricity phenomena.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: A dual-station switching power supply test fixture includes: The housing contains a double-control switch supported by a support platform. The terminals of the double-control switch are connected in series with an ammeter and a voltmeter, and form a separate closed circuit with a light bulb on the power supply. The ammeter and voltmeter are used to measure the current and voltage values ​​in the closed circuit. A temperature regulating mechanism includes a ventilation hood placed inside a housing, a fixing plate placed on the inner wall of the housing above the ventilation hood, an abutment plate connected to the fixing plate by a detachable installation method, and a bimetallic strip installed on the outer wall of the abutment plate by a limiting connection method. The bimetallic sheet has an active layer connected to the contact plate. The outer wall of the active layer is integrally formed with a passive layer away from the contact plate. The passive layer has a first push rod placed on a guide ring on its outside. The top of the guide ring is mounted on a fixed plate. The bottom of the first push rod passes through the ventilation hood and extends to the rotating assembly.

[0007] Furthermore, the rotating assembly has a slot for connecting to the first push rod, and a second push rod for opening the inside of the housing is installed at the opposite end; The rotating assembly includes a first gear plate fixed on a first push rod. A second gear plate that moves in the opposite direction is driven by a central rotating tooth meshing at the bottom of the first gear plate. A tapered rod extending into the battery box is connected to one side of the extended end of the first gear plate. A compression spring fixed on the battery box is provided between the tapered rods. One end of the compression spring is connected to the extended end of the first gear plate.

[0008] Furthermore, the tapered rod is symmetrically arranged with respect to the center of the battery box, and there is a gap between the battery packs inside the battery box that is connected to the tapered rod. The battery packs are installed on the drive motor by electrical connection. A first blade is installed on the output shaft of the drive motor. A guide groove connected to the first blade is formed between the inner wall of the ventilation hood and the partition. The first gear plate, the central rotating tooth and the second gear plate are all placed in the protective cover on the partition.

[0009] Furthermore, one end of the second gear plate is fixed to the second push rod, and the second push rod is provided with a baffle mounted on the inner wall of the housing. The baffle is rotatably connected to the inner wall of the housing by a hinge. The bottom of the baffle is L-shaped and has a limiting groove on the side wall of the housing. As the active layer drives the first push rod to move in the X-axis direction, the conical rod is pulled out of the battery box, the battery pack supplies power to the drive motor and drives the first blade to dissipate heat. At the same time, the second push rod moves in the opposite direction in the X-axis and drives the baffle on the housing to rotate and open the ventilation hole.

[0010] Furthermore, it also includes a humidity regulating mechanism, which includes a box located at the bottom of the inner wall of the housing. A first water tank and a second water tank are respectively installed at both ends of the bottom of the inner wall of the box. A conduit connected to a bearing is provided on the first water tank through a water absorber. A connecting pipe and a rotating rod are respectively movably connected to both ends of the inner wall of the bearing. The water collection tank in the connecting pipe extends to the turntable through a serpentine opening. One end of the turntable is fixedly installed on the output shaft of the dual-axis motor.

[0011] Furthermore, the turntable is provided with an atomizing disc placed on the edge of the inner wall of the box. Both sides of the outer wall of the dual-axis motor are fixed to the inner wall of the box by crossbeams, and one end of the output shaft of the dual-axis motor is connected to the second blade.

[0012] Furthermore, a small gear is fixedly installed at the bottom of the rotating rod, and a large gear installed on the fixed plate meshes with the outer wall of the small gear. The protrusion on the fixed plate is connected to the movable rod through a first swing rod. One end of the movable rod passes through the second water tank and extends to the side plate. A trapezoidal block is integrally formed on the side plate, and the second water tank and the first water tank are connected through an inclined tube.

[0013] Furthermore, both ends of the inner wall of the inclined tube are provided with inclined surfaces that abut against and fit against the trapezoidal block. The movable rod and the slider are connected by a second swing rod. The slider is connected with a groove along the height direction of the inner wall of the movable cavity, and a sealing block extending into the interior of the inclined tube is provided at the bottom of the slider.

[0014] Furthermore, both ends of the first swing rod are mounted on the protrusion and movable rod on the fixed plate by means of rotational connection, and both ends of the second swing rod are mounted on the movable rod and slider by means of rotational connection. The bottom of the small gear and the large gear are both equipped with columns fixed to the bottom of the inner wall of the box, and the outer edge of the small gear and the large gear are provided with rotating grooves connected to the columns.

[0015] In summary, due to the adoption of the above technical solution, the beneficial effects of the present invention are: (1) A temperature regulation mechanism is set up. The housing can ensure the sealing of the power supply test equipment and can test the current and voltage values ​​of the power supply output at different temperatures. When the internal temperature of the housing is too high, the bimetallic strip on the contact plate will bend towards the passive layer, thereby pushing the first push rod on the guide ring to move to the right. During the movement of the first push rod to the right, it will drive the first gear plate to move. With the help of mechanical transmission and gear meshing transmission, the conical rod is pulled out of the battery box, the battery pack provides power to the drive motor and drives the first blade to rotate to dissipate heat. At the same time, the second push rod moves in the opposite direction of the X-axis and drives the baffle on the housing to rotate to open the ventilation. In addition, when the temperature drops, under the action of the elastic restoring force of the compression spring, the conical rod is inserted into the gap of the battery pack and the power is cut off. Then, with the help of gear meshing transmission, the second push rod moves in the X-axis direction and drives the baffle on the housing to rotate to close the ventilation hole. The entire structural design does not require the use of sensing equipment. The integrated structural design has strong performance, reasonable design, strong automatic performance, and effectively ensures the safety of the device and a certain dust-free effect.

[0016] (2) A humidity control mechanism is set up. In order to provide different humidity environments inside the shell, after the dual-axis motor is started, it works with the water suction device on the first water tank to continuously transport water to the turntable. Under the high-speed rotation of the dual-axis motor, the water can be forcefully thrown onto the atomizing plate and collide with it to form atomized particles. Under the rotation of the second blade, these fine atomized particles can be discharged into the shell, thereby increasing the humidity inside the shell to achieve the humidity parameters under different test environments. At the same time, the bearing on the guide tube can ensure the free rotation of the connecting tube and avoid structural interference. On the other hand, it can effectively transport water to the turntable through the connecting tube. After the dual-shaft motor starts, the transmission components are slowed down through the meshing of the small and large gears. Under the rotational connection of the first swing rod, the movable rod moves back and forth horizontally, and water is intermittently transported to the first water tank through the inclined pipe. With the rotational connection of the second swing rod, the trapezoidal block opens the opening of the inclined pipe, and the sealing block moves downward and blocks the inclined pipe, forming a water tank with a certain space. This can prevent the water from flowing too fast during the transportation process, which would cause the water in the first water tank to overflow. This plays a secondary blocking role, ensuring the stable transportation of water and improving the reliability of the device.

[0017] (3) The dual-position switch realizes its function through two side-by-side switches. When one switch is closed, the other switch is open. With the temperature and humidity control mechanisms, power test data under different temperature and humidity environments can be obtained. Moreover, even if one circuit is damaged, due to the independence of the circuit, it will not affect the test data of the other circuit, thus effectively improving the applicability of the device. Attached Figure Description

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

[0019] Figure 1 This is a schematic diagram of the structure of a dual-station switching power supply testing fixture according to the present invention; Figure 2 This is an internal schematic diagram of a dual-station switching power supply testing fixture according to the present invention. Figure 1 ; Figure 3 This is an internal schematic diagram of a dual-station switching power supply testing fixture according to the present invention. Figure 2 ; Figure 4 This is a schematic diagram of the structure of the ventilation hood of the present invention; Figure 5 This is a schematic diagram of the meshing transmission of the central rotating tooth of the present invention; Figure 6 This is a schematic diagram showing the connection between the battery box and the tapered rod of the present invention; Figure 7 This is a partial connection diagram of the housing and baffle of the present invention; Figure 8 This is a schematic diagram of the structure of the housing of the present invention; Figure 9 This is a schematic diagram of the meshing transmission between the pinion and the gear of the present invention; Figure 10 This is a schematic diagram of the structure of the second water tank of the present invention; Figure 11 This is the present invention. Figure 10 Enlarged view of point A.

[0020] Reference numerals: 1. Housing; 2. Dual-control switch; 3. Temperature regulation mechanism; 4. Ventilation hood; 5. Fixing plate; 6. Contact plate; 7. Bimetallic strip; 8. Active layer; 9. Passive layer; 10. Guide ring; 11. First push rod; 12. Rotating assembly; 13. Strip groove; 14. Second push rod; 15. First gear plate; 16. Central rotating tooth; 17. Second gear plate; 18. Battery box; 19. Conical rod; 20. Compression spring; 21. Battery pack; 22. Drive motor; 23. First blade; 24. Partition plate; 25. Protective cover; 26. Baffle; 27. Hinge; 28. Humidity regulating mechanism; 29. ​​Box body; 30. First water tank; 31. Second water tank; 32. Water absorber; 33. Bearing; 34. Connecting pipe; 35. Rotating rod; 36. Turntable; 37. Dual-axis motor; 38. Atomizing disc; 39. Second blade; 40. Small gear; 41. Fixed disc; 42. Large gear; 43. Movable rod; 44. First swing rod; 45. Side plate; 46. Trapezoidal block; 47. Inclined tube; 48. Inclined surface; 49. Slider; 50. Second swing rod; 51. Sealing block. Detailed Implementation

[0021] 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.

[0022] Reference manual attached Figure 1 Appendix Figure 2 and attached Figure 3 As shown, a dual-station switching power supply test fixture includes: a housing 1, a dual-control switch 2 supported and connected inside the housing 1 by a carrier platform, and the terminals of the dual-control switch 2 are connected in series with an ammeter and a voltmeter and form a separate closed circuit through a light bulb on the power supply. The ammeter and voltmeter are used to measure the current and voltage values ​​in the closed circuit. Temperature regulation mechanism 3 includes a ventilation hood 4 placed inside the housing 1. A fixing plate 5 is provided above the ventilation hood 4 and placed on the inner wall of the housing 1. An abutment plate 6 is detachably connected to the fixing plate 5. A bimetallic strip 7 is installed on the outer wall of the abutment plate 6 through a limiting connection. The bimetallic sheet 7 is provided with an active layer 8 connected to the contact plate 6. The outer wall of the active layer 8 is integrally connected to a passive layer 9 away from the contact plate 6. The passive layer 9 is provided with a first push rod 11 placed on a guide ring 10. The top of the guide ring 10 is mounted on the fixed plate 5. The bottom of the first push rod 11 passes through the ventilation cover 4 and extends to the rotating assembly 12.

[0023] Specifically, because the thermal expansion coefficients of each component layer of the bimetallic sheet 7 are different, when the temperature changes, the deformation of the active layer 8 is greater than that of the passive layer 9. As a result, the entire bimetallic sheet 7 will bend towards the passive layer 9. Since the first push rod 11 is movably connected in the guide ring 10, the bimetallic sheet 7 can drive the first push rod 11 to move to the right when it bends.

[0024] refer to Figure 2 , Figure 4 , Figure 5 and Figure 6 The rotating assembly 12 has a strip groove 13 connected to the first push rod 11, and a second push rod 14 for opening the inside of the housing 1 is installed at the opposite end. The rotating assembly 12 includes a first gear plate 15 fixed on the first push rod 11. The bottom of the first gear plate 15 is driven by a second gear plate 17 that moves in the opposite direction through a central rotating tooth 16. A tapered rod 19 extending into the battery box 18 is connected to one side of the extended end of the first gear plate 15. A compression spring 20 fixed on the battery box 18 is provided between the tapered rods 19. One end of the compression spring 20 is connected to the extended end of the first gear plate 15.

[0025] Specifically, the tapered rod 19 is symmetrically arranged with respect to the battery box 18. There is a gap between the battery packs 21 inside the battery box 18 that is connected to the tapered rod 19. The battery packs 21 are installed on the drive motor 22 by electrical connection. The first blade 23 is installed on the output shaft of the drive motor 22. A guide groove connected to the first blade 23 is formed between the inner wall of the ventilation hood 4 and the partition 24. The first gear plate 15, the central rotating tooth 16 and the second gear plate 17 are all placed in the protective cover 25 on the partition 24.

[0026] During the rightward movement of the conical rod 19, it can be pulled out of the gap of the battery pack 21, thereby connecting the battery pack 21 and supplying power to the drive motor 22 through the wires, thereby driving the rotation of the first blade 23. At the same time, under the action of gear meshing transmission, the second push rod 14 moves in the opposite direction and opens the baffle 26 on the housing 1, allowing heat to be discharged to the outside through the guide groove, thereby achieving a cooling effect.

[0027] A temperature regulation mechanism 3 is provided. The housing 1 ensures the airtightness of the power supply testing equipment and can test the current and voltage values ​​output by the power supply at different temperatures. When the internal temperature of the housing 1 is too high, the bimetallic strip 7 on the contact plate 6 will bend towards the passive layer 9, thereby pushing the first push rod 11 on the guide ring 10 to move to the right. During the movement of the first push rod 11 to the right, it will drive the first gear plate 15 to move. Through mechanical transmission and gear meshing, the conical rod 19 pulls out the battery box 18, and the battery pack 21 supplies power to the drive motor 22 and drives the first blade 23. The rotation dissipates heat, and at the same time, the second push rod 14 moves in the opposite direction of the X-axis, causing the baffle 26 on the housing 1 to rotate and open the ventilation. In addition, when the temperature drops, under the elastic restoring force of the compression spring 20, the tapered rod 19 inserts into the gap of the battery pack 21 and cuts off the power. Then, with the help of gear meshing transmission, the second push rod 14 moves in the X-axis direction and causes the baffle 26 on the housing 1 to rotate and close the ventilation hole. The entire structural design does not require the use of sensing equipment. The integrated structural design has strong performance, reasonable design, strong automatic performance, and effectively ensures the safety of the device and a certain dust-free effect.

[0028] refer to Figure 2 and Figure 7 One end of the second gear plate 17 is fixed to the second push rod 14. The second push rod 14 is provided with a baffle 26 mounted on the inner wall of the housing 1. The baffle 26 is rotatably connected to the inner wall of the housing 1 by a hinge 27. The bottom of the baffle 26 is L-shaped and has a limiting groove on the side wall of the housing 1. As the active layer 8 drives the first push rod 11 to move in the X-axis direction, the tapered rod 19 pulls out the battery box 18. The battery pack 21 supplies power to the drive motor 22 and drives the first blade 23 to dissipate heat. At the same time, the second push rod 14 moves in the opposite direction to the X-axis and drives the baffle 26 on the housing 1 to rotate and open the ventilation hole.

[0029] The bottom of the baffle 26 is L-shaped and, in conjunction with the corresponding limiting groove, the baffle 26 can be effectively connected to the limiting groove. By increasing the contact surface, the impact force brought by the rotation of the baffle 26 can be increased, thereby reducing the load on the hinge 27 itself.

[0030] refer to Figure 3 and Figure 8A dual-station switching power supply testing fixture also includes a humidity adjustment mechanism 28. The humidity adjustment mechanism 28 includes a box 29 located at the bottom of the inner wall of the housing 1. A first water tank 30 and a second water tank 31 are respectively installed at both ends of the bottom of the inner wall of the box 29. A conduit connected to a bearing 33 is provided on the first water tank 30 through a water absorber 32. A connecting pipe 34 and a rotating rod 35 are respectively movably connected to both ends of the inner wall of the bearing 33. The water collection tank in the connecting pipe 34 extends to the turntable 36 through a serpentine opening. One end of the turntable 36 is fixedly installed on the output shaft of the dual-axis motor 37.

[0031] The turntable 36 is provided with an atomizing disc 38 placed on the edge of the inner wall of the housing 29. The two sides of the outer wall of the dual-axis motor 37 are fixed to the inner wall of the housing 29 by crossbeams, and one end of the output shaft of the dual-axis motor 37 is connected to the second blade 39.

[0032] Specifically, the dual-axis motor 37 drives the turntable 36 to rotate at high speed, forcefully throwing water out and impacting it onto the atomizing disc 38, thereby atomizing the water into ultra-fine particles of about micrometers and then spraying them out. After these tiny water particles are sprayed into the air, they achieve a corresponding humidification effect through the heat and moisture exchange process with the air.

[0033] A humidity regulating mechanism 28 is provided to provide different humidity environments inside the housing 1. After the dual-axis motor 37 is started, it works with the water suction device 32 on the first water tank 30 to continuously transport water to the turntable 36. Under the high-speed rotation of the dual-axis motor 37, the water is forcefully thrown onto the atomizing disc 38 and collides with it to form atomized particles. Under the rotation of the second blade 39, these fine atomized particles are discharged into the interior of the housing 1, thereby increasing the humidity inside the housing 1 to achieve humidity parameters under different test environments. At the same time, the bearing 33 on the guide tube ensures the free rotation of the connecting pipe 34 to avoid structural interference, and effectively transports water to the turntable 36 through the connecting pipe 34. After the motor 37 starts, the transmission components can be slowed down through the meshing of the small gear 40 and the large gear 42. Under the rotational connection of the first swing rod 44, the movable rod 43 moves back and forth horizontally, and water can be intermittently transported to the first water tank 30 through the inclined pipe 47. With the rotational connection of the second swing rod 50, the trapezoidal block 46 opens the opening of the inclined pipe 47, and the sealing block 51 moves downward and blocks the inclined pipe 47, forming a water tank with a certain space to block the flow of water. This can prevent the water from flowing too fast during the transportation process and causing the water in the first water tank 30 to overflow. This plays a secondary blocking role, ensuring the stable transportation of water and improving the reliability of the device.

[0034] refer to Figure 8 , Figure 9 , Figure 10 and Figure 11 A small gear 40 is fixedly installed at the bottom of the rotating rod 35. The outer wall of the small gear 40 meshes with a large gear 42 installed on the fixed plate 41. The protrusion on the fixed plate 41 is connected to the movable rod 43 through the first swing rod 44. One end of the movable rod 43 passes through the second water tank 31 and extends to the side plate 45. A trapezoidal block 46 is integrally formed on the side plate 45, and the second water tank 31 and the first water tank 30 are connected through an inclined tube 47.

[0035] Both ends of the inner wall of the inclined tube 47 are provided with inclined surfaces 48 that abut against and fit with the trapezoidal block 46. The movable rod 43 and the slider 49 are connected by a second swing rod 50. The slider 49 is connected with a groove along the height direction of the inner wall of the movable cavity, and the bottom of the slider 49 is provided with a sealing block 51 extending into the interior of the inclined tube 47.

[0036] Specifically, both ends of the first swing rod 44 are mounted on the protrusion on the fixed plate 41 and the movable rod 43 by means of rotational connection. Both ends of the second swing rod 50 are mounted on the movable rod 43 and the slider 49 by means of rotational connection. The bottom of the small gear 40 and the large gear 42 are both equipped with columns fixed to the bottom of the inner wall of the housing 29, and the outer edge of the small gear 40 and the large gear 42 are provided with rotating grooves that connect with the columns.

[0037] The above are merely preferred embodiments of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

[0038] The preferred embodiments of the present invention disclosed above are merely illustrative of the invention. These preferred embodiments do not exhaustively describe all details, nor do they limit the invention to specific implementations. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of the invention, thereby enabling those skilled in the art to better understand and utilize the invention. The invention is limited only by the claims and their full scope and equivalents.

Claims

1. A dual-station switching power supply testing fixture, characterized in that, include: The housing (1) is supported and connected to a double-control switch (2) by a carrier platform. The terminals of the double-control switch (2) are connected in series with an ammeter and a voltmeter and form a separate closed circuit through a light bulb on the power supply. The ammeter and voltmeter are used to measure the current and voltage values ​​in the closed circuit. Temperature regulation mechanism (3), the temperature regulation mechanism (3) includes a ventilation hood (4) placed inside the housing (1), a fixing plate (5) placed on the inner wall of the housing (1) is provided above the ventilation hood (4), a contact plate (6) is connected to the fixing plate (5) in a detachable manner, and a bimetallic strip (7) is installed on the outer wall of the contact plate (6) in a limiting connection manner. The bimetallic sheet (7) is provided with an active layer (8) connected to the contact plate (6). The outer wall of the active layer (8) away from the contact plate (6) is integrally connected with a passive layer (9). The passive layer (9) is provided with a first push rod (11) placed on a guide ring (10). The top of the guide ring (10) is mounted on a fixed plate (5). The bottom of the first push rod (11) passes through the ventilation cover (4) and extends to the rotating assembly (12).

2. The dual-station switching power supply testing fixture according to claim 1, characterized in that, The rotating assembly (12) has a slot (13) connected to the first push rod (11), and a second push rod (14) for opening the inside of the housing (1) is installed at the other end. The rotating assembly (12) includes a first gear plate (15) fixed on a first push rod (11). The bottom of the first gear plate (15) is meshed with a second gear plate (17) that moves in the opposite direction through a central rotating tooth (16). A tapered rod (19) extending into the battery box (18) is connected to one side of the extended end of the first gear plate (15). A compression spring (20) fixed on the battery box (18) is provided between the tapered rods (19). One end of the compression spring (20) is connected to the extended end of the first gear plate (15).

3. The dual-station switching power supply testing fixture according to claim 2, characterized in that, The tapered rod (19) is symmetrically arranged with respect to the center of the battery box (18). There is a gap between the battery packs (21) inside the battery box (18) that is connected to the tapered rod (19). The battery packs (21) are installed in the drive motor (22) by electrical connection. The first blade (23) is installed on the output shaft of the drive motor (22). A guide groove connected to the first blade (23) is formed between the inner wall of the ventilation hood (4) and the partition (24). The first gear plate (15), the central rotating tooth (16), and the second gear plate (17) are all placed in the protective cover (25) on the partition (24).

4. The dual-station switching power supply testing fixture according to claim 3, characterized in that, One end of the second gear plate (17) is fixed on the second push rod (14). The second push rod (14) is provided with a baffle (26) on the inner wall of the housing (1). The baffle (26) is rotatably connected to the inner wall of the housing (1) by a hinge (27). The bottom of the baffle (26) is L-shaped and the bottom of the baffle (26) is provided with a limiting groove on the side wall of the housing (1). As the active layer (8) drives the first push rod (11) to move in the X-axis direction, the tapered rod (19) is pulled out of the battery box (18). The battery pack (21) supplies power to the drive motor (22) and drives the first blade (23) to dissipate heat. At the same time, the second push rod (14) moves in the opposite direction to the X-axis and drives the baffle (26) on the housing (1) to rotate and open the ventilation hole.

5. The dual-station switching power supply testing fixture according to claim 1, characterized in that, It also includes a humidity regulating mechanism (28), which includes a box (29) placed at the bottom of the inner wall of the housing (1). A first water tank (30) and a second water tank (31) are respectively installed at both ends of the bottom of the inner wall of the box (29). The first water tank (30) is provided with a conduit connected to the bearing (33) through a water absorber (32). The inner walls of the bearing (33) are respectively movably connected to a connecting pipe (34) and a rotating rod (35). The water collection tank in the connecting pipe (34) extends to the turntable (36) through a serpentine opening. One end of the turntable (36) is fixedly installed on the output shaft of the dual-axis motor (37).

6. The dual-station switching power supply testing fixture according to claim 5, characterized in that, The turntable (36) is provided with an atomizing disc (38) placed on the edge of the inner wall of the box (29). The two sides of the outer wall of the dual-axis motor (37) are fixed to the inner wall of the box (29) by crossbeams, and one end of the output shaft of the dual-axis motor (37) is connected to the second blade (39).

7. The dual-station switching power supply testing fixture according to claim 5, characterized in that, A small gear (40) is fixedly installed at the bottom of the rotating rod (35). The outer wall of the small gear (40) meshes with a large gear (42) installed on the fixed plate (41). The protrusion on the fixed plate (41) is connected to the movable rod (43) through a first swing rod (44). One end of the movable rod (43) passes through the second water tank (31) and extends to the side plate (45). A trapezoidal block (46) is integrally formed on the side plate (45). The second water tank (31) and the first water tank (30) are connected through an inclined tube (47).

8. The dual-station switching power supply testing fixture according to claim 7, characterized in that, The inclined tube (47) has inclined surfaces (48) at both ends of its inner wall that abut against and fit against the trapezoidal block (46). The movable rod (43) and the slider (49) are connected by a second swing rod (50). The slider (49) has a groove connected along the height direction of the inner wall of the movable cavity, and the bottom of the slider (49) has a sealing block (51) extending into the interior of the inclined tube (47).

9. The dual-station switching power supply testing fixture according to claim 8, characterized in that, Both ends of the first swing rod (44) are mounted on the protrusion on the fixed plate (41) and the movable rod (43) by means of rotational connection. Both ends of the second swing rod (50) are mounted on the movable rod (43) and the slider (49) by means of rotational connection. The bottom of the small gear (40) and the large gear (42) are both equipped with columns fixed to the bottom of the inner wall of the box (29), and the outer edge of the small gear (40) and the large gear (42) are provided with rotating grooves connected to the columns.

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