A circuit board power-on voltage detection device

Abstract

The present invention relates to the technical field of voltage detection, and discloses a circuit board power-on voltage detection device, including a detection platform, a detection conveyor belt is rotatably provided in the middle position, and a fixed plate is fixedly installed at the right position of the detection platform; the detection conveyor belt is coaxially connected to the first pulley, and the first pulley is coaxially connected to the first driven wheel through a rotating shaft, and a first electric telescopic rod is fixedly installed on the fixed plate. The circuit board voltage detection device can realize the limited feeding of the conveyed circuit board through the limiting clamp plate, effectively ensuring that the position of the circuit board is located at the lower end of the main detection machine, and the main detection machine is provided with two groups in total, which can ensure that the circuit board pole piece is in contact with the main detection pole piece, and the main detection pole piece can be automatically pressed and returned by the rotation of the eccentric wheel to achieve the purpose of automatic voltage detection, and the unqualified circuit board can be re-detected by the secondary detection machine and the secondary detection pole piece to avoid the occurrence of detection errors.

Description

Technical Field

[0001] The invention relates to the technical field of voltage detection, and in particular to a circuit board power-on voltage detection device. Background Art

[0002] The names of circuit boards include: ceramic circuit boards, alumina ceramic circuit boards, aluminum nitride ceramic circuit boards, circuit boards, PCB boards, aluminum substrates, high-frequency boards, thick copper boards, impedance boards, PCBs, ultra-thin circuit boards, ultra-thin circuit boards, printed circuit boards, etc. Circuit boards miniaturize and visualize circuits, and play an important role in the mass production of fixed circuits and the optimization of electrical appliance layouts.

[0003] At present, the patent with announcement number CN103675406B discloses a battery voltage automatic detection and screening device, including a conveying platform, a placing platform and a detection and screening mechanism, the detection and screening mechanism contains a support frame, the support frame is arranged on one side of the conveying platform, the placing platform is arranged on the other side of the conveying platform corresponding to the support frame, a test pen holder is provided at a position perpendicular to the horizontal surface of the conveying platform on the support frame, the test pen holder is provided with a plurality of groups of positive and negative test pen connectors for detecting the positive and negative terminals of the battery, the detection signals of the plurality of groups of positive and negative test pen connectors are sent to the central processing unit for calculation through the input end of the central processing unit, the test pen holder is connected to the support frame through a first push-pull mechanism, a second push-pull mechanism is provided at a position parallel to the horizontal surface of the conveying platform on the support frame, a third push-pull mechanism is provided on the side of the support frame corresponding to the feeding end of the conveying platform, and the output control end of the central processing unit controls each push-pull mechanism. When measuring the battery voltage, the accuracy is high, which avoids the occurrence of poor contact between the test lead and the battery terminal due to human operating errors, thereby causing erroneous measurement results. In addition, the present invention uses a central processing unit to automatically calculate the pressure difference from the measured data, avoiding inaccurate results caused by human memory errors.

[0004] However, the following problems still exist in the use of the current automatic voltage detection device:

[0005] When performing voltage detection on a circuit board, since the position of the circuit board electrode is not in the middle, and the position of the detection electrode is fixed, it is necessary to additionally adjust the position of the circuit board during the placement of the circuit board. Not only does it require the position of the circuit board electrode to be adjusted, but it is also necessary to ensure that the circuit board is placed in the middle of the conveyor table. When the position of the circuit board is slightly offset, it will cause detection failure. Summary of the invention

[0006] In view of the deficiencies in the prior art, the present invention provides a circuit board power-on voltage detection device, which can clamp and guide the circuit board by limiting the guidance of the clamping plate, effectively ensure the feeding position of the circuit board, and ensure the automatic voltage detection effect.

[0007] The present invention provides the following technical solution: a circuit board power-on voltage detection device comprises a detection platform, a detection conveyor belt is rotatably arranged in the middle position of the detection platform, and a fixed plate is fixedly installed at the right position of the detection platform; the detection conveyor belt is coaxially connected with a first pulley, and the first pulley is coaxially connected with a first driven wheel through a rotating shaft, a first electric telescopic rod is fixedly installed on the fixed plate, and a moving plate is fixedly installed on the first electric telescopic rod, a motor is fixedly arranged on the moving plate, and the output end of the motor is coaxially connected with the driving wheel through a rotating shaft, and a second driven wheel is rotatably arranged on the side of the detection platform. A driving wheel, and the second driven wheel is coaxially connected with the second pulley, a connecting shaft is fixedly installed on the second pulley, and an eccentric wheel is fixedly installed on the connecting shaft, the lower end of the eccentric wheel is in contact with the telescopic component, and the telescopic component includes a receiving plate, a sliding rod, a pressing plate and a connecting spring, a main detection machine is fixedly installed on the upper end of the receiving plate, and the main detection machine is electrically connected with the main detection electrode through a wire, an infrared transmitter and an infrared receiver are symmetrically fixedly installed on the detection table, a limit assembly is arranged on the fixed plate, and the limit assembly includes a guide rod, a limiting clamp and a rotating screw.

[0008] Furthermore, a first bearing is installed on the fixed plate, and the connecting shaft forms a rotating mechanism with the fixed plate through the first bearing installed on the fixed plate, and an eccentric wheel is symmetrically arranged on the connecting shaft. Through the above structure, it is convenient to support the connecting shaft without affecting the rotation of the connecting shaft, and the eccentric wheel can be driven to rotate as the connecting shaft rotates.

[0009] Furthermore, the receiving plate is fixedly mounted on the fixed plate, and the sliding rod is slidably arranged on the receiving plate, and the lower end of the sliding rod is connected to the pressing plate, and the lower end of the pressing plate is connected to the main detection electrode, the upper end of the connecting spring is connected to the receiving plate, and the lower end of the connecting spring is fixedly mounted on the pressing plate. Through the above structure, it is convenient to guide the pressing plate through the sliding rod to ensure that the pressing plate can only move in the vertical direction.

[0010] Furthermore, the guide rod is slidably set on the fixed plate, and the limiting clamp plate and the guide rod are connected to each other, a second bearing is fixedly installed on the limiting clamp plate, and the rotating screw forms a rotating mechanism with the limiting clamp plate through the second bearing installed on the limiting clamp plate, and the rotating screw is penetrated through the fixed plate. Through the above structure, it is convenient to drive the limiting clamp plate to move with the rotation of the rotating screw, so as to realize the guiding and limiting of circuit boards of different sizes.

[0011] Furthermore, a driving assembly is provided at the lower end of the detection platform, and the driving assembly includes a second electric telescopic rod and a movable rack. The second electric telescopic rod is fixedly installed at the lower end of the detection platform, and the movable rack is connected to the second electric telescopic rod, and a gear structure is provided on the side of the movable rack. Through the above structure, it is convenient to drive the movable rack to move up and down by the second electric telescopic rod.

[0012] Furthermore, an adjustment component is provided on the fixed plate, and the adjustment component includes a fixed ring plate, a limiting ball and a lifting gear. The fixed ring plate is fixedly installed on the fixed plate, and the limiting ball is rollingly arranged on the fixed ring plate. An annular groove is provided on the lifting gear, and the limiting ball is rollingly connected with the lifting gear through the groove provided on the lifting gear, and the lifting gear is meshed with the moving rack through the gear structure provided on the side of the moving rack. A threaded hole is provided in the middle position of the lifting gear, and the lifting gear is threadedly connected with the rotating screw through the threaded hole. Through the above structure, the lifting gear can be driven to rotate as the moving rack moves, that is, the rotating screw is driven to move.

[0013] Furthermore, a first extension plate is fixedly installed on the detection platform, and a multi-section telescopic rod is fixedly installed on the first extension plate, two multi-section telescopic rods are symmetrically arranged about the center of the first extension plate, and the two multi-section telescopic rods are interconnected with the pushing plate, a clamping telescopic rod is fixedly installed on the pushing plate, and a clamping plate is fixedly installed on the clamping telescopic rod. Through the above structure, the pushing plate can be driven to move by the multi-section telescopic rod, and then the circuit board can be clamped and fixed under the action of the clamping plate.

[0014] Furthermore, a second extension plate is fixedly installed on the detection platform, and a supporting assembly is arranged on the second extension plate, and the supporting assembly includes a guide slide plate, a fixed sleeve, a return spring and a sliding guide rod. A through-long groove is provided on the second extension plate, and the guide slide plate is slidably connected with the second extension plate through the long groove provided on the second extension plate, the lower end of the fixed sleeve is connected to the guide slide plate, and the lower end of the return spring is connected to the fixed sleeve, and the lower end of the sliding guide rod is connected to the upper end of the return spring, and the sliding guide rod is slidably arranged on the guide slide plate. Through the above structure, the guide slide plate is convenient to slide in the groove provided on the second extension plate, so as to effectively move the position of the secondary detection machine.

[0015] Furthermore, a secondary inspection machine is fixedly installed on the upper end of the sliding guide rod, and two sliding guide rods are symmetrically arranged about the center of the secondary inspection machine, and a secondary inspection electrode is fixedly installed on the lower end of the secondary inspection machine. Through the above structure, it is convenient to re-inspect the circuit board through the secondary inspection machine and the inspection electrode, thereby effectively ensuring the accuracy of the inspection.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] The voltage detection device of the circuit board can realize the limited feeding of the circuit board during the conveying process by limiting the clamping plate, effectively ensuring that the position of the circuit board is located at the lower end of the main detection machine, and the main detection machine is provided with two groups, which can ensure that the circuit board electrode is in contact with the main detection electrode, thereby improving the accuracy of the circuit board voltage detection, and the main detection electrode can be automatically pressed and returned by the rotation of the eccentric wheel to achieve the purpose of automatic voltage detection, and the push plate is driven to move by the multi-section telescopic rod, so that the unqualified circuit board can be pushed to the second extension plate, and the unqualified circuit board can be re-detected by the secondary detection machine and the secondary detection electrode to avoid the occurrence of detection errors. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the three-dimensional structure of the push plate of the present invention;

[0019] Figure 2 This is a schematic diagram of the three-dimensional structure of the limiting splint of the present invention;

[0020] Figure 3 It is a schematic diagram of the three-dimensional structure of the telescopic assembly of the present invention;

[0021] Figure 4 It is a schematic diagram of the three-dimensional structure of the multi-section telescopic rod of the present invention;

[0022] Figure 5 This is a schematic diagram of the three-dimensional structure of the main detection electrode of the present invention;

[0023] Figure 6 It is a schematic diagram of the three-dimensional structure of the limiting component of the present invention;

[0024] Figure 7 It is a schematic diagram of the three-dimensional cross-sectional structure of the lifting gear of the present invention;

[0025] Figure 8 This is a schematic diagram of the exploded three-dimensional structure of the regulating assembly of the present invention;

[0026] Fig. 9 It is a schematic diagram of the three-dimensional structure of the clamping plate of the present invention from top view;

[0027] Fig.10 It is a schematic diagram of the three-dimensional cross-sectional structure of the support assembly of the present invention.

[0028] In the figure: 1, detection table; 2, detection conveyor belt; 3, first pulley; 4, first driven wheel; 5, fixed plate; 6, driving wheel; 7, moving plate; 8, motor; 9, first electric telescopic rod; 10, second driven wheel; 11, second pulley; 12, connecting shaft; 13, eccentric wheel; 14, telescopic assembly; 141, receiving plate; 142, sliding rod; 143, pressing plate; 144, connecting spring; 15, main detection machine; 16, main detection pole piece; 17, limit assembly; 171, guide rod; 172, limit clamp; 173, rotating screw; 1 8. Driving assembly; 181. Second electric telescopic rod; 182. Moving rack; 19. Adjusting assembly; 191. Fixed ring plate; 192. Limiting ball; 193. Lifting gear; 20. First extension plate; 21. Multi-section telescopic rod; 22. Pushing plate; 23. Clamping telescopic rod; 24. Clamping plate; 25. Second extension plate; 26. Supporting assembly; 261. Guide slide plate; 262. Fixed sleeve; 263. Return spring; 264. Sliding guide rod; 27. Secondary detection machine; 28. Secondary detection pole piece; 29. ​​Infrared transmitter; 30. Infrared receiver. DETAILED DESCRIPTION

[0029] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0030] See also Figure 1-Figure 10 The present invention provides a technical solution: a circuit board power-on voltage detection device, comprising a detection platform 1, a detection conveyor belt 2 is rotatably arranged in the middle position, and a fixed plate 5 is fixedly installed at the right position of the detection platform 1; the detection conveyor belt 2 is coaxially connected to the first pulley 3, and the first pulley 3 is coaxially connected to the first driven wheel 4 through a rotating shaft, a first electric telescopic rod 9 is fixedly installed on the fixed plate 5, and a moving plate 7 is fixedly installed on the first electric telescopic rod 9, a motor 8 is fixedly arranged on the moving plate 7, and the output end of the motor 8 is coaxially connected to the driving wheel 6 through a rotating shaft.

[0031] When it is necessary to transport the circuit board, the circuit board is placed on the detection conveyor belt 2, and then the motor 8 starts working. Because the output end of the motor 8 is connected to the driving wheel 6 through the rotating shaft, the driving wheel 6 starts to rotate. As the driving wheel 6 rotates, the driving wheel 6 starts to mesh with the first driven wheel 4. At this time, the first driven wheel 4 starts to rotate. Because the first driven wheel 4 is coaxially connected to the first pulley 3, the first pulley 3 also starts to rotate. The first pulley 3 is coaxially connected to the detection conveyor belt 2. At this time, the detection conveyor belt 2 starts to rotate. As the detection conveyor belt 2 rotates, the detection conveyor belt 2 starts to transport the circuit board. At this time, the circuit board begins to fit and contact with the limiting clamp 172. Under the action of the limiting clamp 172, the circuit board can be straightened so that the circuit board is located in the middle position of the detection conveyor belt 2.

[0032] A second driven wheel 10 is rotatably arranged on the side of the detection platform 1, and the second driven wheel 10 is coaxially connected to the second pulley 11, a connecting shaft 12 is fixedly installed on the second pulley 11, and an eccentric wheel 13 is fixedly installed on the connecting shaft 12, the lower end of the eccentric wheel 13 is in contact with a telescopic component 14, and the telescopic component 14 includes a receiving plate 141, a sliding rod 142, a pressing plate 143 and a connecting spring 144, a main detection machine 15 is fixedly installed on the upper end of the receiving plate 141, and the main detection machine 15 is electrically connected to the main detection electrode 16 through a wire, and an infrared transmitter 2 is symmetrically fixedly installed on the detection platform 1 9 and infrared receiver 30, a first bearing is installed on the fixed plate 5, and the connecting shaft 12 forms a rotating mechanism with the fixed plate 5 through the first bearing installed on the fixed plate 5, and the eccentric wheel 13 is symmetrically arranged on the connecting shaft 12, the receiving plate 141 is fixedly installed on the fixed plate 5, and the sliding rod 142 is slidably arranged on the receiving plate 141, and the lower end of the sliding rod 142 is interconnected with the pressing plate 143, and the lower end of the pressing plate 143 is interconnected with the main detection electrode 16, the upper end of the connecting spring 144 is interconnected with the receiving plate 141, and the lower end of the connecting spring 144 is fixedly installed on the pressing plate 143.

[0033] As the circuit board is transported on the detection conveyor belt 2, when the circuit board reaches between the infrared transmitter 29 and the infrared receiver 30, the infrared rays emitted by the infrared transmitter 29 begin to be blocked, so that they cannot be blocked by the infrared receiver 30, and then the first electric telescopic rod 9 starts to work. Because the first electric telescopic rod 9 is connected to the movable plate 7, the movable plate 7 begins to move toward the second driven wheel 10 until the driving wheel 6 is meshed with the second driven wheel 10, and the driving wheel 6 is no longer meshed with the first driven wheel 4, and the detection conveyor belt 2 stops transporting the circuit board. Because the second driven wheel 10 is coaxially connected to the second pulley 11, the second pulley 11 begins to drive the connecting shaft. 12 rotates, and because the eccentric wheel 13 is installed on the connecting shaft 12, the eccentric wheel 13 starts to push the pressing plate 143, that is, the pressing plate 143 moves downward under the action of the sliding rod 142. Because the pressing plate 143 is fixedly installed with a connecting spring 144, the connecting spring 144 begins to be stretched and deformed, and the main detection electrode 16 begins to contact and conduct with the electrode set on the circuit board. At this time, the voltage detection of the circuit board can be realized. When the detection is completed, the first electric telescopic rod 9 drives the moving plate 7 to move, that is, the driving wheel 6 moves in the direction close to the first driven wheel 4 until it meshes with the first driven wheel 4 again, and then the detection conveyor belt 2 starts to rotate to realize the continued transportation of the circuit board.

[0034] A first extension plate 20 is fixedly mounted on the detection platform 1, and a multi-section telescopic rod 21 is fixedly mounted on the first extension plate 20, two multi-section telescopic rods 21 are symmetrically arranged about the center of the first extension plate 20, and the two multi-section telescopic rods 21 are interconnected with the push plate 22, a clamping telescopic rod 23 is fixedly mounted on the push plate 22, and a clamping plate 24 is fixedly mounted on the clamping telescopic rod 23, a second extension plate 25 is fixedly mounted on the detection platform 1, and a support assembly 26 is arranged on the second extension plate 25, and the support assembly 26 includes a guide slide 261, a fixed sleeve 262, a return spring 263 and a sliding guide rod 264, and the second extension plate 25 is opened A through-going long strip groove is provided, and the guide slide 261 is slidably connected with the second extension plate 25 through the long strip groove opened on the second extension plate 25, the lower end of the fixed sleeve 262 is connected to the guide slide 261, and the lower end of the return spring 263 is connected to the fixed sleeve 262, and the lower end of the sliding guide rod 264 is connected to the upper end of the return spring 263, the sliding guide rod 264 is slidably set on the guide slide 261, the upper end of the sliding guide rod 264 is fixedly installed with a secondary detection machine 27, and two sliding guide rods 264 are symmetrically arranged about the center of the secondary detection machine 27, and the lower end of the secondary detection machine 27 is fixedly installed with a secondary detection pole piece 28.

[0035] When the circuit board is detected to be unqualified, as the circuit board is transported to the front end position of the pushing plate 22 (pushing plate 22 and), the multi-section telescopic rod 21 starts to work, because the multi-section telescopic rod 21 is connected to the pushing plate 22, the pushing plate 22 begins to fit and contact with the circuit board, and then the clamping telescopic rod 23 starts to work, because the clamping telescopic rod 23 is fixedly mounted with a clamping plate 24, at this time the clamping plate 24 begins to fit and contact with the side of the circuit board, achieving the purpose of clamping the circuit board, and then the multi-section telescopic rod 21 continues to work, so that the clamped unqualified circuit board can be pushed until the circuit board moves to the second extension plate 25, and then the fixed The sleeve 262 can limit and guide the fixed sleeve 262 under the action of the guide slide 261 until the secondary detection electrode 28 is located at the upper end of the unqualified circuit board, and then the secondary detection machine 27 is pressed. Since the secondary detection machine 27 is connected to the sliding guide rod 264, the sliding guide rod 264 begins to slide in the fixed sleeve 262. Since a return spring 263 is installed at the lower end of the sliding guide rod 264, the return spring 263 begins to be squeezed and deformed until the secondary detection electrode 28 contacts the unqualified circuit board electrode, thereby achieving the purpose of re-detecting the unqualified circuit board and effectively avoiding the situation where good products are misjudged as defective products due to detection errors.

[0036] A limit assembly 17 is provided on the fixed plate 5, and the limit assembly 17 includes a guide rod 171, a limit clamping plate 172 and a rotating screw 173. The guide rod 171 is slidably arranged on the fixed plate 5, and the limit clamping plate 172 is connected to the guide rod 171. A second bearing is fixedly installed on the limit clamping plate 172, and the rotating screw 173 forms a rotating mechanism with the limit clamping plate 172 through the second bearing installed on the limit clamping plate 172, and the rotating screw 173 is penetrated and arranged on the fixed plate 5. A driving assembly 18 is provided at the lower end of the detection platform 1, and the driving assembly 18 includes a second electric telescopic rod 181 and a moving rack 182. The second electric telescopic rod 181 is fixedly installed at the lower end of the detection platform 1, and the moving rack 182 is connected to the second electric telescopic rod 181. , and a gear structure is provided on the side of the moving rack 182, an adjusting component 19 is provided on the fixed plate 5, and the adjusting component 19 includes a fixed ring plate 191, a limiting ball 192 and a lifting gear 193, the fixed ring plate 191 is fixedly installed on the fixed plate 5, and the limiting ball 192 is rollingly set on the fixed ring plate 191, an annular groove is provided on the lifting gear 193, and the limiting ball 192 is rollingly connected with the lifting gear 193 through the groove provided on the lifting gear 193, and the lifting gear 193 is meshed with the moving rack 182 through the gear structure provided on the side of the moving rack 182, a threaded hole is provided in the middle position of the lifting gear 193, and the lifting gear 193 is threadedly connected with the rotating screw 173 through the threaded hole.

[0037] When it is necessary to inspect circuit boards of different shell sizes (the main inspection machine 15 and the secondary inspection machine 27 are both detachable structures, which can be disassembled and replaced with different sizes as needed), the second electric telescopic rod 181 starts to work, because the lower end of the second electric telescopic rod 181 is fixedly mounted with a moving rack 182, and the moving rack 182 starts to move. Because the moving rack 182 and the lifting gear 193 are meshed with each other, the lifting gear 193 starts to rotate. Because the lifting gear 193 forms a rotating mechanism through the limiting ball 192 and the fixed ring plate 191, the lifting gear 193 starts to rotate. 193 starts to rotate, because the lifting gear 193 is threadedly connected with the rotating screw 173 through a threaded hole opened in the middle position. Therefore, as the lifting gear 193 rotates, the rotating screw 173 also starts to rotate, and as the rotating screw 173 rotates, the rotating screw 173 also starts to move. Because the rotating screw 173 is rotationally connected with the limiting clamp 172, that is, as the rotating screw 173 moves, the limiting clamp 172 also starts to move, and the movement of the limiting clamp 172 can realize clamping and fixing of circuit boards of different sizes, thereby effectively expanding the use range of the lifting device.

[0038] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A circuit board power-on voltage detection device, comprising a detection platform, a detection conveyor belt is rotatably arranged in the middle position, and a fixed plate is fixedly installed at the right position of the detection platform; characterized in that: Also includes: The detection conveyor belt is coaxially connected to the first pulley, and the first pulley is coaxially connected to the first driven wheel through a rotating shaft. A first electric telescopic rod is fixedly installed on the fixed plate, and a movable plate is fixedly installed on the first electric telescopic rod. A motor is fixedly arranged on the movable plate, and the output end of the motor is coaxially connected to the driving wheel through a rotating shaft. A second driven wheel is rotatably arranged on the side of the detection platform, and the second driven wheel is coaxially connected to the second pulley. A connecting rotating shaft is fixedly installed on the second pulley, and an eccentric wheel is fixedly installed on the connecting rotating shaft. The lower end of the eccentric wheel fits the telescopic component with each other, and the telescopic component includes a receiving plate, a sliding rod, a pressing plate and a connecting spring. A main detection machine is fixedly installed on the upper end of the receiving plate, and the main detection machine is electrically connected to the main detection electrode through a wire. An infrared transmitter and an infrared receiver are symmetrically fixedly installed on the detection platform. A limit assembly is arranged on the fixed plate, and the limit assembly includes a guide rod, a limiting clamp and a rotating screw. The receiving plate is fixedly mounted on the fixed plate, and the sliding rod is slidably arranged on the receiving plate, and the lower end of the sliding rod is connected to the pressing plate, and the lower end of the pressing plate is connected to the main detection electrode, the upper end of the connecting spring is connected to the receiving plate, and the lower end of the connecting spring is fixedly mounted on the pressing plate; The guide rod is slidably arranged on the fixed plate, and the limiting clamping plate is connected to the guide rod, a second bearing is fixedly installed on the limiting clamping plate, and the rotating screw rod forms a rotating mechanism with the limiting clamping plate through the second bearing installed on the limiting clamping plate, and the rotating screw rod is penetrated and arranged on the fixed plate.

2. A circuit board power-on voltage detection device according to claim 1, characterized in that: The fixing plate is provided with a first bearing, and the connecting shaft forms a rotating mechanism with the fixing plate through the first bearing installed on the fixing plate, and an eccentric wheel is symmetrically arranged on the connecting shaft.

3. A circuit board power-on voltage detection device according to claim 2, characterized in that: A driving assembly is provided at the lower end of the detection platform, and the driving assembly includes a second electric telescopic rod and a movable rack. The second electric telescopic rod is fixedly installed at the lower end of the detection platform, and the movable rack is connected to the second electric telescopic rod, and a gear structure is provided on the side of the movable rack.

4. A circuit board power-on voltage detection device according to claim 3, characterized in that: An adjusting component is provided on the fixed plate, and the adjusting component includes a fixed ring plate, a limiting ball and a lifting gear. The fixed ring plate is fixedly installed on the fixed plate, and the limiting ball is rollingly arranged on the fixed ring plate. An annular groove is provided on the lifting gear, and the limiting ball is rollingly connected with the lifting gear through the groove provided on the lifting gear, and the lifting gear is meshed with the moving rack through the gear structure provided on the side of the moving rack, a threaded hole is provided in the middle position of the lifting gear, and the lifting gear is threadedly connected with the rotating screw through the threaded hole.

5. A circuit board power-on voltage detection device according to claim 1, characterized in that: A first extension plate is fixedly installed on the detection platform, and a multi-section telescopic rod is fixedly installed on the first extension plate. Two multi-section telescopic rods are symmetrically arranged about the center of the first extension plate, and the two multi-section telescopic rods are interconnected with the pushing plate. A clamping telescopic rod is fixedly installed on the pushing plate, and a clamping plate is fixedly installed on the clamping telescopic rod.

6. A circuit board power-on voltage detection device according to claim 5, characterized in that: A second extension plate is fixedly installed on the detection table, and a supporting assembly is arranged on the second extension plate, and the supporting assembly includes a guide slide plate, a fixed sleeve, a return spring and a sliding guide rod. A through-long groove is provided on the second extension plate, and the guide slide plate is slidably connected with the second extension plate through the long groove provided on the second extension plate. The lower end of the fixed sleeve is connected to the guide slide plate, and the lower end of the return spring is connected to the fixed sleeve, and the lower end of the sliding guide rod is connected to the upper end of the return spring, and the sliding guide rod is slidably arranged on the guide slide plate.

7. A circuit board power-on voltage detection device according to claim 6, characterized in that: A secondary detection machine is fixedly installed on the upper end of the sliding guide rod, and two sliding guide rods are symmetrically arranged about the center of the secondary detection machine, and a secondary detection pole piece is fixedly installed on the lower end of the secondary detection machine.

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