Testing device for single-shaft photovoltaic support

Abstract

The invention relates to a testing device for a single-shaft photovoltaic support, which comprises two moving frames moving relatively and a middle supporting platform located between the two moving frames, and is characterized in that each moving frame is provided with a lifting frame and a lifting driving mechanism for driving the lifting frame to slide vertically; the lifting frame is provided with a slewing bearing and a slewing motor for driving the slewing bearing to rotate, the slewing surface of the slewing bearing is fixedly connected with a slewing disk, the center of the slewing disk is provided with a clamping mechanism, the slewing bearings of the two movable frames are coaxial, the lifting frame is coupled with a slewing gear meshed with the slewing bearing, and the slewing gear is meshed with the slewing bearing. According to the photovoltaic support testing device, a main shaft of a photovoltaic support can be specifically clamped through the clamping mechanism, and meanwhile, the photovoltaic support can be lifted to a certain height and then rotated, so that a photovoltaic panel is tested.

Description

Technical Field

[0001] The invention relates to the field of photovoltaic bracket testing, and in particular to a testing device for a single-axis photovoltaic bracket. Background Art

[0002] A single-axis photovoltaic bracket is a photovoltaic system that rotates the photovoltaic bracket main axis in the middle to make the photovoltaic panel face the sun, such as Figure 8 As shown, a plurality of purlins are connected to the main shaft of the photovoltaic bracket, and photovoltaic panels are installed on the purlins. The main shaft of the photovoltaic bracket is rotated by a driving mechanism so that the photovoltaic panels face the direction of the sun to achieve the best power generation efficiency.

[0003] The main shaft of the photovoltaic bracket is generally made of square tube. After processing, it is best to test each photovoltaic panel of the photovoltaic bracket to ensure that the electrical components of each photovoltaic panel are connected correctly. At the same time, the power generation efficiency of the photovoltaic panel at different angles can be tested. However, the current problem is that the single-axis photovoltaic bracket is large in size and it is difficult to flip it. It can only be hoisted by a crane for testing, which is very dangerous.

[0004] Therefore, it is best to rotate the entire photovoltaic bracket around the main axis so that personnel can conduct various tests. The end of the photovoltaic bracket main axis may be welded with a flange plate or a plug. If the flange plate is welded, the outer ring cannot be clamped due to the large diameter of the flange plate. If the plug is welded, the inner ring cannot be clamped. Therefore, the testing device needs to be able to adapt to the structure of the photovoltaic bracket main axis and can achieve clamping of the inner or outer ring to adapt to different end structures. Summary of the invention

[0005] In view of the deficiencies in the prior art, the present invention provides a testing device for a single-axis photovoltaic support.

[0006] The present invention is achieved through the following technical scheme, which provides a testing device for a single-axis photovoltaic bracket, including two relatively movable frames and an intermediate supporting platform located between the two movable frames, wherein the movable frames are provided with a lifting frame and a lifting drive mechanism for driving the lifting frame to slide vertically, the lifting frame is provided with a slewing bearing and a slewing motor for driving the slewing bearing to rotate, a slewing disk is fixedly connected to the slewing surface of the slewing bearing, a clamping mechanism is installed at the center of the slewing disk, the slewing bearings of the two movable frames are coaxial, and a slewing gear meshing with the slewing bearing is connected to the shaft of the lifting frame.

[0007] As an optimization, the clamping mechanism includes an outer sleeve fixedly connected to the center of the turntable, an inner telescopic shaft slidably connected to the outer sleeve, and a telescopic driving mechanism for driving the inner telescopic shaft to move forward and backward. The inner telescopic shaft is hollow and has four inner top blocks slidably connected in the radial direction. A pull rod is slidably connected to the central axial direction of the inner telescopic shaft. The front end of the pull rod is provided with a tapered shaft that fits the inner end of the inner top block. A clamping plate is fixedly connected to the rear end of the pull rod. An outer connecting rod guide block is fixedly connected to the outer side of the outer sleeve. An outer connecting rod is slidably connected to the outer connecting rod guide block forward and backward. An outer connecting rod is fixedly connected to the outer connecting rod. The outer connecting rod has a protrusion, and a compression plate slot for inserting the compression plate is formed on the side of the outer connecting rod close to the compression plate. The compression plate slot is a long slot extending forward and backward. When the inner hole of the main shaft of the photovoltaic bracket is clamped, the inner telescopic shaft extends forward to the inner hole of the main shaft of the photovoltaic bracket. When the inner telescopic shaft continues to move forward, the compression plate is pressed against the front end of the compression plate slot, and the outer connecting rod protrusion is pressed against the outer connecting rod guide block, so that the pull rod cannot continue to move forward. The inner telescopic shaft moves forward relative to the pull rod, and the tapered shaft pushes the four inner top blocks outward and clamps them in the inner hole of the main shaft of the photovoltaic bracket.

[0008] As an optimization, the clamping mechanism also includes four clamping sliders radially slidably connected to the turntable, and the clamping slider is fixedly connected with a clamping claw located in front of the turntable. Four external connecting rods are provided, and the front end of the external connecting rod is connected to the clamping slider through a connecting rod mechanism. When the outside of the photovoltaic bracket main shaft is clamped, the inner telescopic shaft moves backward, and the clamping plate is pressed against the rear end of the clamping plate slot, driving the external connecting rod to move backward. The external connecting rod drives the clamping slider to slide toward the center of the turntable through the connecting rod mechanism and clamps on the outside of the photovoltaic bracket main shaft.

[0009] As an optimization, the connecting rod mechanism includes a first connecting rod and a second connecting rod, one end of the first connecting rod is hinged to the outer ring of the outer sleeve, the other end of the first connecting rod is hinged to one end of the second connecting rod, the other end of the second connecting rod is hinged to the clamping slider, and a slot extending along the length direction is opened on the first connecting rod, and a pin shaft inserted into the slot is fixed to the front end of the outer connecting rod.

[0010] As an optimization, the turntable is equipped with a return tension spring that drives the clamping slider to move away from the center of the turntable.

[0011] As an optimization, the rear end of the outer end of the inner top block is chamfered.

[0012] As an optimization, a spring is installed in the inner telescopic shaft to push the pull rod forward.

[0013] As an optimization, the front end of the outer sleeve is flush with the front end surface of the turntable.

[0014] As an optimization, the telescopic driving mechanism includes a threaded ring rotatably connected to the end of the outer sleeve and a threaded ring motor driving the threaded ring to rotate, and the threaded ring is threadedly connected to the inner telescopic shaft.

[0015] As an optimization, the lifting drive mechanism includes a lifting screw axially connected to the moving frame and a lifting motor driving the lifting screw to rotate, and the screw nut of the lifting screw is fixedly connected to the lifting frame.

[0016] The beneficial effects of the present invention are as follows: a testing device for a single-axis photovoltaic bracket of the present invention can perform targeted clamping of the main shaft of the photovoltaic bracket through a clamping mechanism. When the end of the main shaft of the photovoltaic bracket is hollow, internal clamping is adopted. When there is a plug at the end of the main shaft of the photovoltaic bracket, external clamping is adopted. At the same time, the photovoltaic bracket can be lifted to a certain height and then rotated, so as to test the photovoltaic panel at various angles. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a front view of the present invention; Figure 2 It is a front view of a single mobile frame of the present invention; Figure 3 is a cross-sectional view of the clamping mechanism of the present invention in an initial state; Figure 4 For the present invention Figure 3 Sectional view of the middle AA plane; Figure 5 A cross-sectional view of the telescopic shaft in the clamping mechanism of the present invention moving forward; Figure 6 A cross-sectional view of a state in which an ejector block in the clamping mechanism of the present invention is ejected outward; Figure 7 A cross-sectional view of the telescopic shaft in the clamping mechanism of the present invention when it moves backward; Figure 8 It is a schematic diagram of the structure of the photovoltaic bracket of the present invention; As shown in the figure: 1. Photovoltaic bracket main shaft, 2. Intermediate supporting platform, 3. Mobile frame, 4. Mobile slide rail, 5. Mobile gear, 6. Rack, 7. Lifting screw, 8. Lifting motor, 9. Lifting frame, 10. Screw nut, 11. Mounting plate, 12. Slewing bearing, 13. Slewing motor, 14. Turntable, 15. Slewing gear, 16. Coupling, 17. Outer sleeve, 18. Inner telescopic shaft, 19. Pull rod, 20. Tapered shaft, 21. Inner top block, 22. Threaded ring, 23. Spring, 24. Pressure plate, 25. Outer connecting rod, 26. Outer connecting rod guide block, 27. Outer connecting rod protrusion, 28. First connecting rod, 29. Second connecting rod, 30. Clamping slider, 31. Clamping claw, 32. Return tension spring, 33. Pin shaft, 34. Raised strip. DETAILED DESCRIPTION

[0018] In order to clearly illustrate the technical features of this solution, this solution is described below through a specific implementation method.

[0019] like Figures 1 to 8 As shown, a testing device for a single-axis photovoltaic bracket of the present invention comprises two relatively movable frames 3, wherein the movable frames 3 are relatively movable by movable slide rails 4 fixed on the ground, and a rack 6 is fixed on the ground, a movable motor is installed at the bottom of the movable frame 3, and a movable gear 5 meshing with the rack 6 is installed on the movable motor, thereby realizing automatic movement of the movable frame 3.

[0020] It also includes an intermediate support platform 2 located between the two mobile frames 3. The photovoltaic bracket is hoisted by a crane and placed on the intermediate support platform 2, which is convenient for personnel to perform testing and adjustment.

[0021] The mobile frame 3 comprises a bottom beam, a top beam, two front columns, and a rear diagonal brace, and the two columns are arranged side by side.

[0022] The mobile frame 3 is equipped with a lifting frame 9 and a lifting drive mechanism that drives the lifting frame 9 to slide vertically. The lifting frame 9 includes two sliding sleeves, which are sleeved on two columns of the mobile frame 3 to achieve lifting guidance. The lifting drive mechanism includes a lifting screw 7 axially connected to the mobile frame 3 and a lifting motor 8 that drives the lifting screw 7 to rotate. The lifting screw is vertically arranged, and the screw nut 10 of the lifting screw 7 is fixedly connected to the lifting frame 9, so that the lifting frame 9 is driven to be lifted and lowered by the lifting motor 8.

[0023] The lifting frame 9 is equipped with a slewing bearing 12 and a slewing motor 13 for driving the slewing bearing 12 to rotate. The fixed part of the slewing bearing 12 is connected to the mounting plate 11 at the front end of the lifting frame 9 by bolts. The center of the mounting plate 11 is provided with an escape hole to escape the clamping mechanism. The rotating axis of the slewing bearing 12 is horizontal and parallel to the moving direction of the moving frame 3. The slewing bearings 12 of the two moving frames 3 are coaxial, and a rotating disk 14 is fixed to the rotating surface of the slewing bearing 12.

[0024] like Figure 2 As shown, the rotating part of the slewing bearing 12 is provided with external teeth. In order to realize the rotation of the turntable 14, a slewing gear 15 meshing with the slewing bearing 12 is axially connected to the lifting frame 9. The slewing gear 15 is connected to the rotating shaft of the slewing motor 13 through a coupling 16.

[0025] The center of the rotating disk 14 is provided with a clamping mechanism, and the two clamping mechanisms clamp the two ends of the photovoltaic support main shaft 1 respectively. Figure 3-7 As shown, the front in the clamping mechanism refers to the direction toward the main axis 1 of the photovoltaic bracket. The right side in the figure of this embodiment is the front. The clamping mechanism includes an outer sleeve 17 fixedly connected to the center of the turntable 14, an inner telescopic shaft 18 slidingly connected in the outer sleeve 17, and a telescopic driving mechanism for driving the inner telescopic shaft 18 to move forward and backward. The outer sleeve 17 is a metal ring, and the front end of the outer sleeve 17 is flush with the front end surface of the turntable 14.

[0026] The inner telescopic shaft 18 is a round shaft and is longer than the outer sleeve 17. Before clamping, the front end of the inner telescopic shaft 18 is flush with the front end of the outer sleeve 17. Figure 4 As shown, in order to enable the inner telescopic shaft 18 to move forward and backward without rotating, a plurality of convex strips 34 extending forward and backward are fixed to the inner ring of the outer sleeve 17, and the outer ring of the inner telescopic shaft 18 is provided with grooves corresponding to the convex strips, thereby enabling the inner telescopic shaft 18 to move forward and backward.

[0027] The telescopic drive mechanism includes a threaded ring 22 rotatably connected to the end of the outer sleeve 17 and a threaded ring motor driving the threaded ring 22 to rotate. The threaded ring 22 is threadedly connected to the inner telescopic shaft 18. The threaded ring 22 is rotatably connected to the rear end of the outer sleeve 17. Since the inner telescopic shaft 18 is longer than the outer sleeve 17, the threaded ring 22 is always threadedly connected to the inner telescopic shaft 18. The threaded ring motor drives the threaded ring 22 to rotate, thereby realizing the forward and backward movement of the inner telescopic shaft 18. Two threaded ring motors are provided and are evenly distributed circumferentially relative to the outer sleeve 17.

[0028] The outer diameter of the inner telescopic shaft 18 is 0.6-0.8 times the side length of the inner hole of the square tube used in the photovoltaic bracket main shaft 1, which is convenient for clamping the inner hole. The inner telescopic shaft 18 is hollow and has four inner top blocks 21 slidingly connected in the radial direction. The four inner top blocks 21 are evenly distributed along the circumference of the inner telescopic shaft 18 and are used to clamp the four faces of the inner hole of the square tube. The outer end of the inner top block 21 can extend out of the outer ring of the inner telescopic shaft 18, and the inner end of the inner top block 21 is located in the hollow. The rear end of the outer end of the inner top block 21 is chamfered, and when the inner telescopic shaft 18 is retracted backward into the outer sleeve 17, the inner top block 21 is pressed back into the inner telescopic shaft 18 by chamfering.

[0029] A pull rod 19 is slidably connected to the central axis of the inner telescopic shaft 18, and the rear end of the pull rod 19 passes through the inner telescopic shaft 18. The front end of the pull rod 19 is provided with a tapered shaft 20 that fits with the inner end of the inner top block 21. The diameter of the tapered shaft 20 gradually decreases from front to back. Therefore, when the inner telescopic shaft 18 moves forward relative to the tapered shaft 20, the inner top block 21 can be pushed outward.

[0030] A spring 23 for pushing the pull rod 19 forward is housed in the inner telescopic shaft 18. The front end face of the tapered shaft 20 at the front end of the pull rod 19 is pressed against the front end face of the inner telescopic shaft 18 inner chambers.

[0031] A clamping plate 24 is fixedly connected to the rear end of the pull rod 19. The clamping plate 24 is a circular plate and is perpendicular to the pull rod 19. An outer connecting rod guide block 26 is fixedly connected to the outer side of the outer sleeve 17. An outer connecting rod 25 is slidably connected to the outer connecting rod guide block 26. Four outer connecting rods 25 are arranged and are evenly distributed circumferentially along the axis of the outer sleeve 17.

[0032] The outer connecting rod 25 is fixed with an outer connecting rod protrusion 27. When the outer connecting rod 25 moves forward and the outer connecting rod protrusion 27 presses against the outer connecting rod guide block 26, the outer connecting rod 25 cannot move forward any further. A pressing disc slot for accommodating the pressing disc 24 is provided on one side of the outer connecting rod 25 close to the pressing disc 24. The pressing disc slot is a long slot extending forward and backward. The edge of the pressing disc 24 is in the pressing disc slot and can be a certain distance forward and backward.

[0033] When the inner hole of the photovoltaic bracket main shaft 1 is clamped, the inner telescopic shaft 18 extends forward to the inner hole of the photovoltaic bracket main shaft 1. When the inner telescopic shaft 18 continues to move forward, the clamping plate 24 presses against the front end of the clamping plate slot, and the outer connecting rod protrusion 27 presses against the outer connecting rod guide block 26, so that the pull rod 19 cannot continue to move forward. The inner telescopic shaft 18 moves forward relative to the pull rod 19, and the tapered shaft 20 pushes the four inner top blocks 21 outward and clamps them in the inner hole of the photovoltaic bracket main shaft 1.

[0034] The clamping mechanism further includes four clamping sliders 30 radially slidably connected to the rotary disk 14. The clamping sliders 30 are connected to the back of the rotary disk 14 through linear slide rails. The clamping sliders 30 are fixedly connected with clamping claws 31 located in front of the rotary disk 14, and the clamping claws 31 pass through the rotary disk 14. The rotary disk 14 is equipped with a return tension spring 32 that drives the clamping sliders 30 to move away from the center of the rotary disk 14, so as to achieve release after clamping is completed.

[0035] The outer connecting rod 25 is provided with four clamping sliders 30 respectively corresponding to the four clamping sliders 30. The front end of the outer connecting rod 25 is connected to the clamping slider 30 through a connecting rod mechanism. The connecting rod mechanism includes a first connecting rod 28 and a second connecting rod 29. One end of the first connecting rod 28 is hinged to the outer ring of the outer sleeve 17, the other end of the first connecting rod 28 is hinged to one end of the second connecting rod 29, and the other end of the second connecting rod 29 is hinged to the clamping slider 30. The first connecting rod 28 is provided with a slot extending along the length direction, and the front end of the outer connecting rod 25 is fixedly connected to a pin shaft 33 inserted into the slot.

[0036] When the outside of the photovoltaic bracket main shaft 1 is clamped, the inner telescopic shaft 18 moves backward, and the clamping plate 24 presses against the rear end of the clamping plate slot, driving the outer connecting rod 25 to move backward. The outer connecting rod 25 drives the clamping slider 30 to slide toward the center of the turntable 14 through the connecting rod mechanism and clamps on the outside of the photovoltaic bracket main shaft 1.

[0037] Method of use of the present invention: During the test, the photovoltaic bracket is placed on the middle supporting platform 2, with the two ends of the photovoltaic bracket main shaft 1 facing the two clamping mechanisms respectively, the two movable frames 3 move relative to each other, and the lifting frame 9 is lifted and lowered vertically at the same time, so that the center of the clamping mechanism is aligned with the photovoltaic bracket main shaft 1, and the end of the photovoltaic bracket main shaft 1 is attached to the front end surface of the turntable 14.

[0038] After the photovoltaic bracket main shaft 1 is clamped by two clamping mechanisms, the lifting frame 9 moves upward to facilitate the rotation of the photovoltaic bracket. The rotary motor 13 drives the rotary gear 15 to rotate, and the rotary gear 15 engages with the rotating part of the rotary support 12, thereby driving the turntable 14 to rotate, thereby driving the photovoltaic bracket to rotate. After the test is completed, the photovoltaic bracket rotates to a horizontal state, and the lifting frame 9 drives the photovoltaic bracket to descend.

[0039] Determine the clamping method according to the structure of the end of the photovoltaic bracket main shaft 1, for example Figure 1 A plug is welded in the inner hole at the left end of the main shaft 1 of the photovoltaic bracket, so the left end is clamped externally. Figure 1 A flange is welded at the right end of the main shaft 1 of the middle photovoltaic bracket. The diameter of the flange is too large, so the right end is internally clamped.

[0040] like Figure 3 This is the state before clamping. When the inner hole of the photovoltaic support main shaft 1 is clamped, the inner telescopic shaft 18 extends forward into the inner hole of the photovoltaic support main shaft 1. Figure 5 During this process, the clamping plate 24 moves in the clamping plate slot, and the pull rod 19 and the inner telescopic shaft 18 do not move relative to each other. When the inner telescopic shaft 18 continues to move forward, the clamping plate 24 presses against the front end of the clamping plate slot, and the outer connecting rod protrusion 27 presses against the outer connecting rod guide block 26, so that the pull rod 19 cannot move forward. The inner telescopic shaft 18 moves forward relative to the pull rod 19, and the tapered shaft 20 pushes the four inner top blocks 21 outward and clamps them in the inner hole of the photovoltaic bracket main shaft 1. The four inner top blocks 21 press against the four plates on the inner wall of the square tube respectively. This state is shown in FIG. Figure 6 .

[0041] When the outside of the photovoltaic bracket main shaft 1 is clamped, the inner telescopic shaft 18 moves backward from the initial state, and the clamping plate 24 presses against the rear end of the clamping plate slot, driving the outer connecting rod 25 to move backward. The pin 33 at the front end of the outer connecting rod 25 drives the first connecting rod 28 to swing backward, thereby driving the clamping slider 30 to slide toward the center of the rotating disk 14 through the second connecting rod 29 and clamped on the outside of the photovoltaic bracket main shaft 1. The four clamping claws 31 are respectively pressed against the four plates on the outer wall of the square tube. This state is shown in FIG. Figure 7 .

[0042] Of course, the above description is not limited to the above examples. Technical features not described in the present invention can be achieved by or by using existing technologies, which will not be described here. The above embodiments and drawings are only used to illustrate the technical scheme of the present invention and are not limitations of the present invention. The present invention is described in detail with reference to the preferred implementation methods. Ordinary technicians in this field should understand that changes, modifications, additions or substitutions made by ordinary technicians in this technical field within the essential scope of the present invention do not depart from the purpose of the present invention, and should also fall within the scope of protection of the claims of the present invention.

Claims

1. A testing device for a single-axis photovoltaic support, characterized in that: The invention comprises two relatively movable moving frames (3) and an intermediate supporting platform (2) located between the two movable frames (3); a lifting frame (9) and a lifting driving mechanism for driving the lifting frame (9) to slide vertically are mounted on the movable frame (3); a slewing bearing (12) and a slewing motor (13) for driving the slewing bearing (12) to rotate are mounted on the lifting frame (9); a slewing disk (14) is fixedly connected to the slewing surface of the slewing bearing (12); a clamping mechanism is mounted at the center of the slewing disk (14); the slewing bearings (12) of the two movable frames (3) are coaxial; and a slewing gear (15) meshing with the slewing bearing (12) is connected to the upper shaft of the lifting frame (9).

2. A testing device for a single-axis photovoltaic support according to claim 1, characterized in that: The clamping mechanism comprises an outer sleeve (17) fixedly connected to the center of the rotating disk (14), an inner telescopic shaft (18) slidably connected to the outer sleeve (17), and a telescopic driving mechanism for driving the inner telescopic shaft (18) to move forward and backward, wherein the inner telescopic shaft (18) is hollow and has four inner top blocks (21) slidably connected in the radial direction, a pull rod (19) is slidably connected to the center axial direction of the inner telescopic shaft (18), a tapered shaft (20) is provided at the front end of the pull rod (19) and fits with the inner end of the inner top block (21), a clamping plate (24) is fixedly connected to the rear end of the pull rod (19), an outer connecting rod guide block (26) is fixedly connected to the outer side of the outer sleeve (17), an outer connecting rod (25) is slidably connected to the outer connecting rod guide block (26), and an outer connecting rod (25) is fixedly connected to the outer connecting rod (25). The outer connecting rod protrusion (27) is provided on one side of the outer connecting rod (25) close to the clamping plate (24) to accommodate the clamping plate slot for inserting the clamping plate (24). The clamping plate slot is a long slot extending forward and backward. When the inner hole of the photovoltaic support main shaft (1) is clamped, the inner telescopic shaft (18) extends forward into the inner hole of the photovoltaic support main shaft (1). When the inner telescopic shaft (18) continues to move forward, the clamping plate (24) presses against the front end of the clamping plate slot, and the outer connecting rod protrusion (27) presses against the outer connecting rod guide block (26), so that the pull rod (19) cannot move forward further. The inner telescopic shaft (18) moves forward relative to the pull rod (19), and the tapered shaft (20) pushes the four inner top blocks (21) outward and clamps them in the inner hole of the photovoltaic support main shaft (1).

3. A testing device for a single-axis photovoltaic support according to claim 2, characterized in that: The clamping mechanism further comprises four clamping sliders (30) radially slidably connected to the rotating disk (14), the clamping sliders (30) being fixedly connected with clamping claws (31) located in front of the rotating disk (14), and four outer connecting rods (25) are provided, and the front ends of the outer connecting rods (25) are connected to the clamping sliders (30) through a connecting rod mechanism. When the outside of the photovoltaic support main shaft (1) is clamped, the inner telescopic shaft (18) moves backward, and the clamping disk (24) presses against the rear end of the clamping disk slot, driving the outer connecting rod (25) to move backward. The outer connecting rod (25) drives the clamping slider (30) through the connecting rod mechanism to slide toward the center of the rotating disk (14) and clamp on the outside of the photovoltaic support main shaft (1).

4. A testing device for a single-axis photovoltaic support according to claim 3, characterized in that: The connecting rod mechanism comprises a first connecting rod (28) and a second connecting rod (29), one end of the first connecting rod (28) is hinged to the outer ring of the outer sleeve (17), the other end of the first connecting rod (28) is hinged to one end of the second connecting rod (29), and the other end of the second connecting rod (29) is hinged to the clamping slider (30), the first connecting rod (28) is provided with a slot extending in the length direction, and the front end of the outer connecting rod (25) is fixedly connected to a pin shaft (33) inserted into the slot.

5. The testing device for a single-axis photovoltaic support according to claim 3, characterized in that: The rotary disk (14) is provided with a return tension spring (32) for driving the clamping slider (30) to move in a direction away from the center of the rotary disk (14).

6. A testing device for a single-axis photovoltaic support according to claim 2, characterized in that: The rear end of the outer end of the inner top block (21) is chamfered.

7. A testing device for a single-axis photovoltaic support according to claim 2, characterized in that: The inner telescopic shaft (18) contains a spring (23) for pushing the pull rod (19) forward.

8. A testing device for a single-axis photovoltaic support according to claim 2, characterized in that: The front end of the outer sleeve (17) is flush with the front end surface of the rotating disk (14).

9. A testing device for a single-axis photovoltaic support according to claim 2, characterized in that: The telescopic drive mechanism comprises a threaded ring (22) rotatably connected to the end of the outer sleeve (17) and a threaded ring motor driving the threaded ring (22) to rotate; the threaded ring (22) is threadably connected to the inner telescopic shaft (18).

10. A testing device for a single-axis photovoltaic support according to claim 1, characterized in that: The lifting drive mechanism comprises a lifting screw (7) axially connected to a moving frame (3) and a lifting motor (8) for driving the lifting screw (7) to rotate, and a screw nut (10) of the lifting screw (7) is fixedly connected to a lifting frame (9).

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