Detection machine for photovoltaic junction box diode

Abstract

The invention discloses a detection machine for a photovoltaic junction box diode, and belongs to the technical field of diode detection, the detection machine comprises an outer shell, a display screen and an adjusting knob, the display screen and the adjusting knob are mounted on the outer side of the outer shell, a sliding block is arranged on the inner bottom surface of the outer shell, and an upper mounting plate and a lower mounting plate are sequentially arranged in the outer shell from top to bottom; a strip-shaped groove penetrating through the upper side and the lower side of the lower mounting plate is formed in the lower mounting plate, the sliding block is slidably connected into the strip-shaped groove, the lower mounting plate is connected with a driven disc through a reversing assembly, and a detection groove is formed in the upper surface of the driven disc. When the diode detection device is used, only the diode needs to be pushed into the upper mounting plate, subsequent operation is not needed, and forward detection and reverse detection can be automatically carried out on the diode, so that the detection efficiency of the diode can be greatly improved; in addition, the kinetic energy for driving the detector to move downwards and reversing the diode comes from the operation of pushing the diode below the upper mounting plate, so that an external driving device is not needed, and energy is saved.

Description

Technical Field

[0001] The present invention relates to the technical field of diode detection, in particular to a detector for photovoltaic junction box diodes. Background Art

[0002] With the growing global demand for renewable energy, photovoltaic power generation, as an important component of clean energy, has seen its technological development and application scale continue to expand. As an indispensable component in photovoltaic power generation systems, photovoltaic junction boxes have the important functions of connecting photovoltaic modules, protecting circuits, and transmitting electrical energy. Diodes, as key components in the junction box, play a vital role in the stability and efficiency of photovoltaic systems.

[0003] Diodes in photovoltaic junction boxes primarily serve the functions of rectification and backflow prevention, ensuring unidirectional flow of electrical energy and preventing system damage or efficiency loss due to backflow. However, photovoltaic systems are often installed outdoors in harsh environments, such as high temperature, high humidity, and strong ultraviolet radiation. These environmental factors pose severe challenges to the performance and lifespan of diodes. Therefore, diode quality testing and screening have become a key step in the photovoltaic junction box production process.

[0004] The photovoltaic junction box diode tester is a device that can test the quality of diodes. It connects the diode to the circuit where the contacts are located by contacting the two ends of the diode, thereby achieving the purpose of testing the diode quality.

[0005] In the prior art, diode commutation detection requires a motor, which results in cumbersome detection steps. For example, Publication No. CN119224524B discloses a self-testing tester for photovoltaic junction box diodes. The diode detection process is mainly divided into two steps. The first step is to lower the detection platform a certain distance by driving the meshing connection of the gear and the rack. The motor then drives the detector body downward to connect the contact with the diode. The second step is to rotate the rotating platform by the motor when the contact and the diode are not connected to achieve diode commutation.

[0006] In the above process, the motor drives the detector body to descend, and the motor is used to commutate the diode. This means that when testing the diode in the above prior art, the diode needs to be pushed under the testing platform first, and then the secondary motor needs to be operated to complete the detection of one diode, resulting in low detection efficiency.

[0007] Therefore, a photovoltaic junction box diode detection machine is needed to solve the above problems. Summary of the Invention

[0008] The purpose of the present invention is to provide a photovoltaic junction box diode inspection machine to solve the problem raised in the above background technology that when using the existing photovoltaic junction box diode inspection machine, in addition to pushing the diode under the inspection platform, it is also necessary to operate the motors on both sides, which leads to low inspection efficiency.

[0009] To achieve the above object, the present invention provides the following technical solutions:

[0010] A detection machine for a photovoltaic junction box diode comprises an outer shell and a display screen and an adjustment knob mounted on the outside thereof, a slider being provided on the inner bottom surface of the outer shell, and an upper mounting plate and a lower mounting plate being sequentially provided inside the outer shell from top to bottom, a strip groove being provided on the lower mounting plate running through the upper and lower sides thereof, and the slider being slidably connected in the strip groove, the lower mounting plate being connected to a driven disk via a reversing assembly, and a detection groove being provided on the upper surface of the driven disk, the side surface of the upper mounting plate being connected to the inner side of the outer shell via a block groove sliding structure, and a detector being mounted on the lower surface of the upper mounting plate, a flexible sheet-shaped detection contact being mounted on the lower surface of the detector, the position of the detection contact corresponding to the position of the detection groove, the upper surface of the upper mounting plate being connected to the inner top end of the outer shell via a reciprocating assembly, and the lower surface of the lower mounting plate being connected to the reciprocating assembly via a driving assembly.

[0011] Preferably, the reversing assembly includes an annular cavity arranged on the upper surface of the lower mounting plate, an outer ring tube is connected to the annular cavity, the inner side of the outer ring tube is connected to the inner ring tube through a twisted thread above the lower mounting plate, and the inner side of the inner ring tube is connected to the outer ring side of the driven plate through a one-way bearing, and the axial end of the driven plate is connected to the upper surface of the lower mounting plate through a one-way bearing.

[0012] Preferably, raised grooves are provided at equal angles on the annular cavity, and raised grooves are provided at equal angles on the outer side of the outer ring tube. The raised grooves are engaged with the corresponding raised grooves, and a spring is provided between the lower surface of the raised groove and the inner bottom end of the raised groove. The raised grooves and the raised grooves are used to limit the outer ring tube to prevent it from rotating. Pressure rods are provided at equal angles on the lower surface of the upper mounting plate, and the pressure rods and the raised grooves are provided in a one-to-one correspondence.

[0013] Preferably, the reciprocating moving assembly includes a support tube arranged on the upper surface of the upper mounting plate, the support tube is coaxially arranged with the upper mounting plate, the inner side of the support tube is threadedly connected to the lower end of the reciprocating screw, the inner top end of the outer shell is installed with a support frame, and the support frame is connected to the middle and lower part of the upper end of the reciprocating screw through a one-way bearing, the outer side of the middle and upper part of the upper end of the reciprocating screw is connected to a rotating cover through a one-way bearing, and the upper end of the rotating cover is provided with a rope winding shaft coaxial with it, the inner top end of the outer shell is provided with a top groove, and the rope winding shaft is provided in the top groove, the shaft end damping bearing of the rope winding shaft is connected to the inner top end of the top groove, and a torsion spring is installed between the upper end of the rope winding shaft and the inner top end of the top groove.

[0014] Preferably, a guide groove is provided in the outer shell, and a groove is provided on the inner bottom surface of the outer shell, the two ends of the guide groove pass through the top groove and the groove respectively, one end of the wire rope is connected to the rope winding shaft, and the other end of the wire rope passes through the guide groove and extends into the groove.

[0015] Preferably, guide wheels are provided at the corners of the guide groove for guiding the wire rope.

[0016] Preferably, the drive assembly includes two hole-rod linkage structures symmetrically installed in the groove on the bottom surface of the outer shell, the hole-rod linkage structure includes a square tube and a square hole, the square tube and the square hole are nested and connected, the square tube bearing is connected to the inner side of the groove, two gear plates are symmetrically arranged in the groove, the square hole is arranged on the side of the gear plate facing the corresponding square tube, the coaxial bearing in the square hole is connected to one end of the connecting rod, and a spring 2 is installed between the gear plate and the square tube.

[0017] Preferably, the driving assembly also includes a sliding groove and a moving groove arranged on the inner bottom surface of the outer shell, and the sliding groove and the moving groove are through-connected, and two sliding grooves are provided. The other end of the connecting rod can move through the moving groove, and a pressure block is slidably connected in the moving groove, and the pressure block is connected to the other end of the connecting rod. The sliding direction of the pressure block is parallel to the axis of the connecting rod, and two extrusion blocks are slidably connected in each of the sliding grooves, and the extrusion blocks are fixedly connected to the lower surface of the lower mounting plate, and the lower surface of the lower mounting plate is evenly provided with teeth, and the teeth are meshed with two gear plates.

[0018] Preferably, each of the pressure blocks is provided with two symmetrical beveled grooves, and the end of the extrusion block facing the pressure block is provided with a beveled surface, and the positions of the beveled grooves and the beveled surface correspond one to one.

[0019] Preferably, a conical groove is provided on the side of the gear plate facing away from the hole-rod linkage structure, and a double-headed conical block is provided between the two gear plates, and both ends of the double-headed conical block are respectively connected to the conical grooves on the two gear plates through the hole-rod limiting structure, and rubber pads are provided on the outer sides of both ends of the double-headed conical block and the inner sides of the two conical grooves, which are used to increase the friction between the end of the double-headed conical block and the conical groove after they contact each other. The hole-rod limiting structure includes a cylindrical rod and a cylindrical hole, the cylindrical rod is coaxially arranged in the corresponding conical groove, the cylindrical hole is coaxially arranged at the end of the double-headed conical block, the cylindrical rod and the cylindrical hole are movably nested and connected, the middle of the double-headed conical block is connected to the other end of the wire rope, and the two ends of the inner side of the double-headed conical block are connected to the groove through bracket bearings.

[0020] Compared with the prior art, the present invention has the following beneficial effects: when using the photovoltaic junction box diode detection machine, it is only necessary to push the diode into the upper mounting plate, and no subsequent operation is required to automatically perform forward and reverse detection on the diode, thereby greatly improving the detection efficiency of the diode. In addition, the kinetic energy for driving the detector downward and reversing the diode comes from the operation of pushing the diode under the upper mounting plate, thereby eliminating the need for external drive equipment, which helps save energy.

[0021] 1. When the diode is pushed under the upper mounting plate, the teeth drive the gear plate to rotate. Under the action of spring 2, the gear plate drives the double-headed conical block to rotate synchronously. When the double-headed conical block rotates, the wire rope drives the rope shaft to rotate, thereby storing the torsion spring force to facilitate the storage of kinetic energy.

[0022] 2. When the lower mounting plate is completely moved to the bottom of the upper mounting plate, the extrusion block squeezes the pressure block, and the gear plate is driven to move through the connecting rod, so that the gear plate no longer tightly squeezes the double-headed conical block. At this time, the double-headed conical block will be reset under the action of the torsion spring. During this process, the rope shaft rotates in the opposite direction, which in turn enables the rotating cover to drive the reciprocating screw to rotate, and the support tube drives the upper mounting plate to reciprocate up and down twice, so that the diode can be tested twice;

[0023] 3. When the upper mounting plate moves downward, the detection contact will contact the pin on the diode and drive the pressure rod to move downward. When the pressure rod moves downward, it will squeeze the outer ring tube, thereby driving the inner ring tube to rotate in the forward direction. Since the inner ring tube and the driven disk are connected by a one-way bearing, it will not drive the driven disk to rotate. When the upper mounting plate moves upward, it will cause the inner ring tube to rotate in the reverse direction, which will drive the driven disk to rotate 180°. When the upper mounting plate moves downward for the second time, the diode will be detected in the reverse direction. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 This is a schematic diagram of the main structure of the present invention;

[0025] Figure 2 This is a schematic diagram of the connection structure between the outer shell and the lower mounting plate of the present invention;

[0026] Figure 3 This is a schematic side sectional view of the present invention;

[0027] Figure 4 For the present invention Figure 3 A schematic diagram of the enlarged structure of point A;

[0028] Figure 5 For the present invention Figure 3 A schematic diagram of the enlarged structure of point B;

[0029] Figure 6This is a schematic diagram of the main cross-sectional structure of the present invention;

[0030] Figure 7 For the present invention Figure 6 Schematic diagram of the enlarged structure of point C in the middle;

[0031] Figure 8 For the present invention Figure 6 The enlarged structural diagram of point D in the middle;

[0032] Figure 9 This is a schematic structural diagram of the positional relationship between the sliding groove and the outer shell of the present invention;

[0033] Figure 10 For the present invention Figure 9 The enlarged structural diagram of point E in the middle;

[0034] Figure 11 It is a partial cross-sectional structural schematic diagram of the present invention;

[0035] Figure 12 For the present invention Figure 11 Schematic diagram of the enlarged structure at point F.

[0036] In the figure: 1. outer shell; 2. display screen; 3. adjustment knob; 4. upper mounting plate; 5. lower mounting plate; 6. strip groove; 7. slider; 8. support tube; 9. detection groove; 10. pressure rod; 11. detector; 12. detection contact; 13. wire rope; 14. guide groove; 15. top groove; 16. rope winding shaft; 17. torsion spring; 18. rotating cover; 19. reciprocating screw; 20. support frame; 21. annular cavity; 22. spring 1; 23. outer ring tube; 24. inner ring tube; 25. driven plate; 26. teeth; 27. block groove sliding structure; 28. pressure block; 29. gear plate; 30. double-headed tapered block; 31. hole rod limiting structure; 32. connecting rod; 33. hole rod linkage structure; 34. spring 2; 35. tapered groove; 36. sliding groove; 37. moving groove; 38. extrusion block. DETAILED DESCRIPTION

[0037] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0038] See also Figures 1-12 , the present invention provides the following technical solutions:

[0039] Embodiment 1: In order to solve the problem that the previous photovoltaic junction box diode detection machine needs to operate the motor to commutate the diode when in use, thereby resulting in low detection efficiency, the following technical solution is provided, specifically, a photovoltaic junction box diode detection machine, including an outer shell 1 and a display screen 2 and an adjustment knob 3 installed on the outside thereof, a slider 7 is provided on the inner bottom surface of the outer shell 1, and an upper mounting plate 4 and a lower mounting plate 5 are provided in sequence from top to bottom inside the outer shell 1, a strip groove 6 is provided on the lower mounting plate 5 running through the upper and lower sides thereof, and the slider 7 is slidably connected in the strip groove 6, the lower mounting plate 5 is connected to the driven disk 25 through a reversing component, and a detection groove 9 is provided on the upper surface of the driven disk 25.

[0040] The reversing assembly includes an annular cavity 21 arranged on the upper surface of the lower mounting plate 5, and an outer ring tube 23 is connected to the annular cavity 21. The inner side of the outer ring tube 23 is connected to the inner ring tube 24 through a twisted thread at the upper part of the lower mounting plate 5, and the inner side of the inner ring tube 24 is connected to the outer ring side of the driven plate 25 through a one-way bearing. The axial end of the driven plate 25 is connected to the upper surface of the lower mounting plate 5 through a one-way bearing. A convex groove is provided at equal angles on the annular cavity 21, and a convex is provided at equal angles on the outer side of the outer ring tube 23. The convex is engaged with the corresponding convex groove, and a spring 22 is provided between the lower surface of the convex and the inner bottom end of the convex groove. The convex and the convex groove are used to limit the outer ring tube 23 to prevent it from rotating. A pressure rod 10 is provided at equal angles on the lower surface of the upper mounting plate 4, and the pressure rod 10 is provided in a one-to-one correspondence with the convex. Figure 3 and Figure 5 In the process of the upper mounting plate 4 moving downward, the pressure rod 10 will be driven to move downward, and the pressure rod 10 will gradually squeeze the protrusion. After the protrusion is squeezed, the outer ring tube 23 will move downward with it, thereby driving the inner ring tube 24 to rotate. Since the inner ring tube 24 and the driven disk 25 are connected by a one-way bearing, the driven disk 25 will not be driven to rotate. In the above process, the spring 1 22 is squeezed and compressed. In the process of the upper mounting plate 4 moving upward, the spring 1 22 is reset, driving the outer ring tube 23 to reset. At this time, the inner ring tube 24 can drive the driven disk 25 to rotate, thereby making the diode commutated. Therefore, there is no need to operate the motor, and the diode can be tested in the forward and reverse directions during the two reciprocating movements of the upper mounting plate 4.

[0041] Embodiment 2: In order to solve the problem that the previous photovoltaic junction box diode detection machine needs to operate the motor to detect the diode after pushing the diode to the bottom of the detection platform, the following technical solution is provided. Specifically, the side of the upper mounting plate 4 is connected to the inner side of the outer shell 1 through a block groove sliding structure 27, and a detector 11 is installed on the lower surface of the upper mounting plate 4. A flexible sheet-shaped detection contact 12 is installed on the lower surface of the detector 11. The position of the detection contact 12 corresponds to the position of the detection slot 9. The upper surface of the upper mounting plate 4 is connected to the inner top of the outer shell 1 through a reciprocating moving component, and the lower surface of the lower mounting plate 5 is connected to the reciprocating moving component through a driving component.

[0042] The reciprocating assembly includes a support tube 8 provided on the upper surface of the upper mounting plate 4, the support tube 8 is coaxially arranged with the upper mounting plate 4, the inner side of the support tube 8 is threadedly connected to the lower end of the reciprocating screw 19, the inner top end of the outer shell 1 is provided with a support frame 20, and the support frame 20 is connected to the middle and lower part of the upper end of the reciprocating screw 19 through a one-way bearing, the outer side of the middle and upper part of the upper end of the reciprocating screw 19 is connected to a rotating cover 18 through a one-way bearing, and the upper end of the rotating cover 18 is provided with a rope winding shaft 16 coaxial therewith, the inner top end of the outer shell 1 is provided with a top groove 15, and the rope winding shaft 16 It is arranged in the top groove 15, the shaft end damping bearing of the rope winding shaft 16 is connected to the inner top of the top groove 15, and a torsion spring 17 is installed between the upper end of the rope winding shaft 16 and the inner top of the top groove 15. A guide groove 14 is provided in the outer shell 1, and a groove is provided on the inner bottom surface of the outer shell 1. The two ends of the guide groove 14 pass through the top groove 15 and the groove respectively. One end of the wire rope 13 is connected to the rope winding shaft 16, and the other end of the wire rope 13 passes through the guide groove 14 and extends into the groove. A guide wheel is provided at the corner of the guide groove 14 for guiding the wire rope 13. Figure 3 and Figure 4 When the torsion spring 17 releases its elastic potential energy, it will drive the rope winding shaft 16 to rotate, and then the wire rope 13 can be wound, and the rotating cover 18 will be driven to rotate synchronously. Since the rotating cover 18 and the reciprocating screw rod 19 are connected by a one-way bearing, the reciprocating screw rod 19 will be driven to rotate, and the support tube 8 will drive the upper mounting plate 4 to move up and down twice, so as to facilitate forward and reverse detection of the diode.

[0043] The driving assembly includes two hole-rod linkage structures 33 symmetrically mounted in the groove on the bottom surface of the outer shell 1. The hole-rod linkage structure 33 includes a square tube and a square hole. The square tube and the square hole are nested and connected. The square tube bearing is connected to the inner side of the groove. Two gear plates 29 are symmetrically arranged in the groove. The square hole is arranged on the side of the gear plate 29 facing the corresponding square tube. One end of the connecting rod 32 is connected to the coaxial bearing in the square hole. A spring 2 34 is installed between the gear plate 29 and the square tube. The driving assembly also includes a sliding groove 36 and a moving groove arranged on the bottom surface of the outer shell 1. The sliding groove 36 and the moving groove 37 are connected in a continuous manner. There are two sliding grooves 36. The other end of the connecting rod 32 is movable through the moving groove 37. The pressure block 28 is slidably connected in the moving groove 37, and the pressure block 28 is connected to the other end of the connecting rod 32. The sliding direction of the pressure block 28 is parallel to the axis of the connecting rod 32. Two extrusion blocks 38 are slidably connected in each sliding groove 36, and the extrusion blocks 38 are fixedly connected to the lower surface of the lower mounting plate 5. The lower surface of the lower mounting plate 5 is evenly provided with teeth 26. The teeth 26 are meshed with the two gear plates 29, and each pressure block 28 is provided with two symmetrical bevel grooves. The extrusion block 38 is provided with a beveled surface towards the end of the pressure block 28, and the beveled groove corresponds to the beveled surface position one by one. A conical groove 35 is provided on the side of the gear plate 29 facing away from the hole rod linkage structure 33. A double-headed conical block 30 is provided between the two gear plates 29. Both ends of the double-headed conical block 30 are connected to the conical grooves 35 on the two gear plates 29 respectively through the hole rod limiting structure 31. The two ends of the double-headed conical block 30 are connected to the conical grooves 35 on the two gear plates 29 respectively. The outer side of the end and the inner side of the two tapered grooves 35 are provided with rubber pads to increase the friction between the end of the double-headed tapered block 30 and the tapered groove 35 after the two ends are in contact. The hole rod limiting structure 31 includes a cylindrical rod and a cylindrical hole. The cylindrical rod is coaxially arranged in the corresponding tapered groove 35. The cylindrical hole is coaxially arranged at the end of the double-headed tapered block 30. The cylindrical rod and the cylindrical hole are movably nested and connected. The middle of the double-headed tapered block 30 is connected to the other end of the wire rope 13, and the two ends of the inner side of the double-headed tapered block 30 are connected to the groove through the bracket bearing. Figure 6-Figure 12In the process of pushing the lower mounting plate 5 completely under the upper mounting plate 4, the teeth 26 will drive the gear plate 29 to rotate, and under the action of the spring 2 34, the double-headed conical block 30 will move and rotate with the gear plate 29. At this time, the double-headed conical block 30 will wind the wire rope 13, thereby causing the rope winding shaft 16 to release the wire rope 13 and causing the torsion spring 17 to store force. In this process, since the rotating cover 18 and the reciprocating screw rod 19 are connected by a one-way bearing, the rotation of the rope winding shaft 16 will not drive the reciprocating screw rod 19 to rotate, and the process of pushing the lower mounting plate 5 in In the process, the extrusion block 38 moves in the sliding groove 36 until the extrusion block 38 contacts the pressure block 28 and squeezes the pressure block 28 until it moves. During the movement, the pressure block 28 pulls the gear plate 29, so that the tapered groove 35 on the gear plate 29 is no longer tightly pressed against the double-headed tapered block 30. At this time, the double-headed tapered block 30 releases the wire rope 13 under the action of the torsion spring 17 and rewinds the wire rope 13 around the rope shaft 16. In this process, the rotating cover 18 drives the reciprocating screw rod 19 to rotate, thereby causing the upper mounting plate 4 to reciprocate up and down;

[0044] During the process of pulling out the lower mounting plate 5, although the rotation direction of the double-headed conical block 30 is opposite to that when the lower mounting plate 5 is pushed in, the rope winding shaft 16 still releases the wire rope 13, so that it does not drive the reciprocating screw 19 to rotate. After the lower mounting plate 5 is pulled out to the point where the other extrusion block 38 squeezes the pressure block 28 until it moves, the rope winding shaft 16 will wind the wire rope 13, thereby ensuring that the rope winding shaft 16 releases the wire rope 13 again when the lower mounting plate 5 is pushed in next time, so as to repeat the above-mentioned detection process.

[0045] The contents not described in detail in this specification belong to the prior art known to those skilled in the art.

[0046] While 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 these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A photovoltaic junction box diode detection machine, comprising an outer shell (1) and a display screen (2) and an adjustment knob (3) mounted on the outer side thereof, characterized in that: The inner bottom surface of the outer shell (1) is provided with a slider (7), and the inner surface of the outer shell (1) is provided with an upper mounting plate (4) and a lower mounting plate (5) in sequence from top to bottom, the lower mounting plate (5) is provided with a strip groove (6) running through the upper and lower sides thereof, and the slider (7) is slidably connected in the strip groove (6), the lower mounting plate (5) is connected to the driven disk (25) through a reversing assembly, and the upper surface of the driven disk (25) is provided with a detection groove (9), and the side surface of the upper mounting plate (4) is provided with a detection groove (9) The block slot sliding structure (27) is connected to the inner side of the outer shell (1), and a detector (11) is installed on the lower surface of the upper mounting plate (4). A flexible sheet-shaped detection contact (12) is installed on the lower surface of the detector (11). The position of the detection contact (12) corresponds to the position of the detection slot (9). The upper surface of the upper mounting plate (4) is connected to the inner top end of the outer shell (1) through a reciprocating component, and the lower surface of the lower mounting plate (5) is connected to the reciprocating component through a driving component.

2. A photovoltaic junction box diode detection machine according to claim 1, characterized in that: The reversing assembly comprises an annular cavity (21) arranged on the upper surface of the lower mounting plate (5), an outer ring tube (23) is connected to the inner side of the annular cavity (21), the inner side of the outer ring tube (23) located above the lower mounting plate (5) is connected to the inner ring tube (24) through a twisted thread, and the inner side of the inner ring tube (24) is connected to the outer ring side of the driven disc (25) through a one-way bearing, and the shaft end of the driven disc (25) is connected to the upper surface of the lower mounting plate (5) through a one-way bearing.

3. A photovoltaic junction box diode detection machine according to claim 2, characterized in that: The annular cavity (21) is provided with a raised groove at an equal angle, and the outer side of the outer ring tube (23) is provided with a raised groove at an equal angle. The raised groove is engaged with the corresponding raised groove, and a spring (22) is provided between the lower surface of the raised groove and the inner bottom end of the raised groove. The raised groove and the raised groove are used to limit the outer ring tube (23) to prevent it from rotating. The lower surface of the upper mounting plate (4) is provided with a pressure rod (10) at an equal angle, and the pressure rod (10) is provided in a one-to-one correspondence with the raised groove.

4. A photovoltaic junction box diode detection machine according to claim 3, characterized in that: The reciprocating assembly comprises a support tube (8) arranged on the upper surface of the upper mounting plate (4), the support tube (8) and the upper mounting plate (4) are coaxially arranged, the inner side of the support tube (8) is threadedly connected to the lower end of the reciprocating screw (19), the inner top end of the outer shell (1) is equipped with a support frame (20), and the support frame (20) is connected to the middle and lower part of the upper end of the reciprocating screw (19) through a one-way bearing, and the upper middle part of the upper end of the reciprocating screw (19) is connected to the upper middle part of the reciprocating screw (19). The outer side is connected to a rotating cover (18) through a one-way bearing, and the upper end of the rotating cover (18) is provided with a rope winding shaft (16) coaxial therewith, the inner top end of the outer shell (1) is provided with a top groove (15), and the rope winding shaft (16) is arranged in the top groove (15), the axial end damping bearing of the rope winding shaft (16) is connected to the inner top end of the top groove (15), and a torsion spring (17) is installed between the upper end of the rope winding shaft (16) and the inner top end of the top groove (15).

5. A photovoltaic junction box diode detection machine according to claim 4, characterized in that: A guide groove (14) is provided in the outer shell (1), and a groove is provided on the inner bottom surface of the outer shell (1). The two ends of the guide groove (14) respectively penetrate the top groove (15) and the groove. One end of the wire rope (13) is connected to the rope winding shaft (16), and the other end of the wire rope (13) penetrates the guide groove (14) and extends into the groove.

6. A photovoltaic junction box diode detection machine according to claim 5, characterized in that: A guide wheel is provided at the corner of the guide groove (14) for guiding the steel wire rope (13).

7. A photovoltaic junction box diode detection machine according to claim 6, characterized in that: The driving assembly comprises two hole-rod linkage structures (33) symmetrically mounted in the groove on the inner bottom surface of the outer shell (1), the hole-rod linkage structure (33) comprising a square tube and a square hole, the square tube and the square hole being nested and connected, the square tube bearing being connected to the inner side of the groove, two gear plates (29) being symmetrically arranged in the groove, the square hole being arranged on the side of the gear plate (29) facing the corresponding square tube, one end of a connecting rod (32) being connected to the coaxial bearing in the square hole, and a second spring (34) being installed between the gear plate (29) and the square tube.

8. The photovoltaic junction box diode detection machine according to claim 7, characterized in that: The driving assembly further comprises a sliding groove (36) and a moving groove (37) provided on the inner bottom surface of the outer shell (1), and the sliding groove (36) and the moving groove (37) are connected through, and two sliding grooves (36) are provided, and the other end of the connecting rod (32) is movable through the moving groove (37), and a pressure block (28) is slidably connected in the moving groove (37), and the pressure block (28) is connected to the other end of the connecting rod (32), and the sliding direction of the pressure block (28) is parallel to the axis of the connecting rod (32), and two extrusion blocks (38) are slidably connected in each sliding groove (36), and the extrusion blocks (38) are fixedly connected to the lower surface of the lower mounting plate (5), and the lower surface of the lower mounting plate (5) is evenly provided with teeth (26), and the teeth (26) are meshed with two gear plates (29).

9. The photovoltaic junction box diode detection machine according to claim 8, characterized in that: Each of the pressure blocks (28) is provided with two symmetrical bevel grooves, and the end of the extrusion block (38) facing the pressure block (28) is provided with a bevel surface, and the positions of the bevel grooves and the bevel surface correspond one to one.

10. A photovoltaic junction box diode testing machine according to claim 9, characterized in that: A conical groove (35) is provided on one side of the gear plate (29) facing away from the hole-rod linkage structure (33), and a double-headed conical block (30) is provided between the two gear plates (29). Both ends of the double-headed conical block (30) are respectively connected to the conical grooves (35) on the two gear plates (29) through the hole-rod limiting structure (31). Rubber pads are provided on the outer sides of both ends of the double-headed conical block (30) and on the inner sides of the two conical grooves (35) to increase the stability of the double-headed conical block ( After the end of 30) contacts the conical groove (35), the friction force between the two is generated. The hole rod limiting structure (31) includes a cylindrical rod and a cylindrical hole. The cylindrical rod is coaxially arranged in the corresponding conical groove (35). The cylindrical hole is coaxially arranged at the end of the double-headed conical block (30). The cylindrical rod and the cylindrical hole are movably nested and connected. The middle of the double-headed conical block (30) is connected to the other end of the wire rope (13), and the inner two ends of the double-headed conical block (30) are connected to the groove through the bracket bearing.

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