Anti-deformation large-span photovoltaic support

Abstract

The invention relates to an anti-deformation large-span photovoltaic support, and belongs to the field of photovoltaic supports, the anti-deformation large-span photovoltaic support comprises a bottom frame, a main shaft and a longitudinal adjusting mechanism, the main shaft is rotatably arranged on the bottom frame, the length direction of the main shaft is the horizontal direction, and the longitudinal adjusting mechanism is used for enabling the main shaft to rotate and comprises a driving source; the longitudinal adjusting mechanism comprises a push-pull rod and a plurality of conversion assemblies, the push-pull rod is slidably connected with the bottom frame, the length direction and the sliding direction of the push-pull rod are parallel to the axis of the main shaft, the driving source is used for controlling the push-pull rod to move, and the conversion assemblies are arranged in an array mode in the length direction of the main shaft and located between the main shaft and the push-pull rod. The conversion assembly is used for converting thrust generated when the push-pull rod moves into torque and outputting the torque to the main shaft. The main shaft of the support has high deformation resistance.

Description

Technical Field

[0001] This application relates to the field of photovoltaic brackets, and in particular to a large-span photovoltaic bracket with anti-deformation performance. Background Art

[0002] Photovoltaic is short for solar photovoltaic power generation system, which is a new type of power generation system that uses the photovoltaic effect of solar cell semiconductor materials to directly convert solar radiation energy into electrical energy, and has two operation modes: independent operation and grid-connected operation. A solar photovoltaic bracket is a special bracket designed for placing, installing, and fixing solar panels in a solar photovoltaic power generation system.

[0003] A large number of photovoltaic panels are installed on the photovoltaic bracket, and the photovoltaic bracket needs to have an angle adjustment function to adjust the angle of the photovoltaic panel according to the angle of the sun, so as to improve the light collection efficiency; the angle adjustment includes longitudinal adjustment and lateral adjustment. The longitudinal adjustment enables the photovoltaic panel to adapt to the sun's altitude at different times within a natural year, and the lateral adjustment enables the photovoltaic panel to adapt to different sun orientations from morning to evening in a day.

[0004] For the mechanism of longitudinal angle adjustment, its form is usually a main shaft rotatably arranged relative to a fixed frame, and all photovoltaic panels are relatively installed on the main shaft. The axis of the main shaft is in the horizontal direction, so that it can rotate vertically. The rotation drive source is usually arranged in the middle or one end of the main shaft, and a torque is applied to the main shaft to drive it to rotate. When the lateral span of the photovoltaic bracket is relatively large, the overall length of the main shaft is relatively long, which results in a relatively stable state of the part of the main shaft close to the drive source, while the part far from the drive source is prone to deformation due to the material elasticity of the main shaft. Especially when the drive source starts to adjust, the main shaft at the part far from the drive source shakes for a long time due to inertia after rotation, and then causes fatigue deformation or a decrease in structural strength of part of the main shaft structure. Summary of the Invention

[0005] In order to improve the above problems, this application provides a large-span photovoltaic bracket with anti-deformation performance.

[0006] The large-span photovoltaic bracket with anti-deformation performance provided by this application adopts the following technical solutions: A deformation-resistant large-span photovoltaic bracket comprises a base frame, a main shaft and a longitudinal adjustment mechanism, wherein the main shaft is rotatably arranged on the base frame, the length direction of the main shaft is horizontal, the longitudinal adjustment mechanism is used to rotate the main shaft, the longitudinal adjustment mechanism comprises a driving source, the longitudinal adjustment mechanism comprises a push-pull rod and a plurality of conversion components, the push-pull rod is slidably connected to the base frame, the length direction and sliding direction of the push-pull rod are parallel to the axis of the main shaft, the driving source is used to control the movement of the push-pull rod, a plurality of the conversion components are arranged in an array along the length direction of the main shaft, the conversion component is located between the main shaft and the push-pull rod, and the conversion component is used to convert the thrust generated when the push-pull rod moves into torque and transmit the torque to the main shaft.

[0007] By adopting the above technical solution, multiple conversion components establish multiple torque transmission points along the length direction of the main shaft. The main shaft has a large number of "support points" when rotating and the distribution is relatively even. The push-pull rod moves along its own length direction. Since the material's deformation resistance in the tensile or compressive direction is better than its torsional deformation resistance, the start-stop synchronization of each torque transmission point is high, so the overall deformation resistance of the main shaft is high when rotating.

[0008] Preferably, the conversion assembly includes a conversion gear and a spiral ridge, the spiral ridge is fixedly connected to the side wall of the push-pull rod, the conversion gear is rotatably set on the base frame, a motor gear is coaxially fixedly connected to the main shaft, the conversion gear and the motor gear are meshed, a transmission hole is coaxially opened in the middle of the conversion gear, a matching groove is opened on the hole wall of the transmission hole, and the matching groove is for the spiral ridge to pass through.

[0009] By adopting the above technical solution, when the push-pull rod moves along its own length direction, the spiral ridge applies thrust to the groove wall of the matching groove, and the conversion gear rotates due to the thrust along its own circumference.

[0010] Preferably, the number of the spiral ridges is three, and the three spiral ridges are arranged in a circumferential array around the push-pull rod. Abutment balls are embedded in the groove wall of the matching groove, and the abutment balls roll and abut against the side wall of the spiral ridge.

[0011] By adopting the above technical solution, the rolling of the abutting ball improves the smoothness of the spiral ridge applying thrust to the matching groove wall.

[0012] Preferably, the conversion assembly also includes auxiliary gears, the number of the auxiliary gears is at least two, the auxiliary gears are rotatably connected to the base frame, the rotation axis is parallel to the length direction of the push-pull rod, the auxiliary gears are meshed with the conversion gear, and the meshing point of the auxiliary gear and the conversion gear is located on the side of the axis of the conversion gear away from the motor gear.

[0013] Preferably, a transmission box is fixedly connected to the chassis, the conversion assembly is located inside the transmission box, stabilizing balls are embedded in the inner wall of the transmission box, a stabilizing ring groove is coaxially formed on the end face of the conversion gear, and the bottom of the stabilizing ring groove is in rolling contact with the stabilizing balls.

[0014] By adopting the above technical solution, the auxiliary gear and the abutting ball support the conversion gear at different positions respectively, enabling the conversion gear to rotate stably.

[0015] Preferably, the drive source includes a drive motor and a drive nut plate. The drive motor is arranged on the chassis, the drive nut plate is rotatably arranged on the chassis, the output shaft of the drive motor is connected to the drive nut plate through a speed reducer, and the drive nut plate is coaxially threadedly connected to the push rod.

[0016] By adopting the above technical solution, screw drive has high precision and stability. Under the action of screw drive, the push rod can move horizontally.

[0017] Preferably, a plurality of reinforcing rods are movably arranged on the chassis. The plurality of reinforcing rods are arranged in an array along the length direction of the push rod. A reinforcing groove is formed on the side wall of the push rod along its own length direction. A control assembly for controlling the movement of the reinforcing rods is also arranged on the chassis. One end of the reinforcing rod enters the reinforcing groove and abuts against the groove wall of the reinforcing groove.

[0018] Preferably, the reinforcing rod is hinged to the chassis, and the hinge axis is perpendicular to the length direction of the push rod. The control assembly includes a drive rod and a driver. The drive rod is slidably connected to the chassis, and its length direction and sliding direction are parallel to the sliding direction of the push rod. The driver is arranged on the chassis, and the driver is used to apply a thrust or a pull force to the drive rod. The drive rod is simultaneously movably hinged to all the reinforcing rods.

[0019] By adopting the above technical solution, when the push rod is in a static state, one end of each of all the reinforcing rods extends into the reinforcing groove and abuts against the groove wall of the reinforcing groove. At this time, the push rod is subjected to abutting forces and static frictional forces from different reinforcing rods at multiple positions of its own, so that the push rod is not easily distorted or bent, thereby indirectly improving the state stability of the main shaft.

[0020] Preferably, along the depth direction of the reinforcing groove, the groove width of the reinforcing groove gradually decreases, and a wedge-shaped structure is provided at one end of the reinforcing rod inserted into the reinforcing groove.

[0021] By adopting the above technical solution, the end of the reinforcing rod can enter and exit the reinforcing groove more smoothly.

[0022] In summary, the present application includes at least one of the following beneficial technical effects: 1. Through the settings of the push rod and the conversion components, multiple torque transmission points are established along the length direction of the main shaft by the multiple conversion components. When the main shaft rotates, there are a relatively large number of "support points" and they are evenly distributed. The movement form of the push rod is to move along its own length direction. Since the anti-deformation ability of the material in the direction of tensile or compressive force is better than that in the direction of torsional deformation, the start-stop synchronization of each torque transmission point is relatively high. Therefore, the overall anti-deformation ability of the main shaft during rotation is relatively high; 2. Through the settings of the reinforcement rods and the drivers, when the push rod is in a static state, one end of all the reinforcement rods extends into the reinforcement grooves and abuts against the groove walls of the reinforcement grooves. At this time, multiple positions of the push rod itself are subjected to the abutting force and static friction force from different reinforcement rods, so that the push rod is not easily distorted or bent, thereby indirectly improving the state stability of the main shaft. Description of the Drawings

[0023] Figure 1 is a schematic structural diagram of the large-span photovoltaic bracket for reflecting anti-deformation in the embodiment of the present application.

[0024] Figure 2 is a schematic structural diagram of the embodiment of the present application for reflecting the cooperation structure of the conversion gear and the push rod.

[0025] Figure 3 is a schematic cross-sectional structural diagram of the embodiment of the present application for reflecting the coaxial cooperation of the push rod and the conversion gear.

[0026] Figure 4 is a schematic structural diagram of the embodiment of the present application for reflecting the working principle of the reinforcement rod and the control component.

[0027] Description of the Reference Numerals: 1, chassis; 11, transmission box; 12, main shaft; 121, motorized gear; 13, mounting bracket; 2, longitudinal adjustment mechanism; 21, drive source; 211, drive motor; 212, drive nut plate; 22, push rod; 221, reinforcement groove; 23, conversion component; 231, conversion gear; 2311, transmission hole; 2312, mating groove; 2313, abutting ball; 2314, stable ring groove; 232, auxiliary gear; 233, stable ball; 24, spiral rib; 3, reinforcement rod; 31, drive rod; 32, driver. Detailed Embodiment

[0028] The following will Figures 1-4 make a further detailed description of the present application.

[0029] The embodiment of the present application discloses a large-span photovoltaic bracket with anti-deformation, such as Figure 1As shown in the figure, it includes a chassis 1, a main shaft 12, and a longitudinal adjustment mechanism 2. The chassis 1 is fixed on the ground, the main shaft 12 is rotatably arranged on the chassis 1, the length direction of the main shaft 12 is horizontal, and a plurality of mounting brackets 13 for mounting photovoltaic panels are fixedly arranged on the main shaft 12 along its own length direction. The longitudinal adjustment mechanism 2 is used to rotate the main shaft 12, and the rotation direction is vertical.

[0030] As Figure 1 , 2 and Figure 3 show, the longitudinal adjustment mechanism 2 includes a driving source 21, a push-pull rod 22, and a plurality of conversion components 23. The push-pull rod 22 is slidably connected to the chassis 1. The length direction and the sliding direction of the push-pull rod 22 are both parallel to the axis of the main shaft 12. The driving source 21 is used to control the movement of the push-pull rod 22. A plurality of conversion components 23 are arranged in an array along the length direction of the main shaft 12. The conversion components 23 are located between the main shaft 12 and the push-pull rod 22, and are used to convert the thrust generated when the push-pull rod 22 moves into torque and transmit the torque to the main shaft 12. A plurality of transmission boxes 11 are fixedly connected to the chassis 1, and a single conversion component 23 is located in one transmission box 11. The conversion component 23 includes a conversion gear 231 and a spiral rib 24. The spiral rib 24 is fixedly connected to the side wall of the push-pull rod 22. The number of spiral ribs 24 of each conversion component 23 is three. The three spiral ribs 24 are arranged in a circumferential array around the push-pull rod 22. The spiral inclination angle of the spiral rib 24 relative to the push-pull rod 22 is 45°. The conversion gear 231 is coaxially sleeved outside the push-pull rod 22. A transmission hole 2311 for the push-pull rod 22 to pass through is coaxially opened in the middle of the conversion gear 231. Three matching grooves 2312 are opened on the hole wall of the transmission hole 2311, and a single matching groove 2312 is for one spiral rib 24 to pass through. A contact ball 2313 is embedded on the groove wall of the matching groove 2312, and the contact ball 2313 is in rolling contact with the side wall of the spiral rib 24. When the push-pull rod 22 moves along its own length direction, the conversion gear 231 is rotated by the thrust along its own circumferential direction.

[0031] As Figure 2 and 3As shown in the figure, a plurality of motor gears 121 are coaxially and fixedly connected to the main shaft 12, and a single motor gear 121 meshes with a conversion gear 231. The conversion assembly 23 further includes auxiliary gears 232. The number of auxiliary gears 232 is at least two. The auxiliary gears 232 are rotatably connected to the chassis 1, and the rotation axis is parallel to the length direction of the push rod 22. The auxiliary gears 232 mesh with the conversion gear 231, and the meshing points of the two auxiliary gears 232 and the conversion gear 231 are located on the side of the axis of the conversion gear 231 away from the motor gear 121. The auxiliary gears 232 are used to rotatably support the conversion gear 231 to improve the stability of the conversion gear 231 during rotation. A stable ring groove 2314 is coaxially formed on the end face of the conversion gear 231, and stable balls 233 are embedded on the inner wall of the transmission box 11. The bottom of the stable ring groove 2314 rolls against the stable balls 233, and the stable balls 233 axially abut against the conversion gear 231 to improve the axial stability of the conversion gear 231. The number of stable balls 233 in a single stable ring groove 2314 is three.

[0032] As Figure 1 shown in the figure, the drive source 21 includes a drive motor 211 and a drive nut plate 212. The drive motor 211 is fixedly arranged on the chassis 1, the drive nut plate 212 is rotatably arranged on the chassis 1, and the output shaft of the drive motor 211 is connected to the drive nut plate 212 through a speed reducer, that is, after the drive motor 211 is started, the drive nut plate 212 is controlled to rotate. The drive nut plate 212 is coaxially and threadedly connected to the push rod 22. The screw drive has high precision and stability. Under the action of the screw drive, the push rod 22 can move horizontally.

[0033] As Figure 1 and 4 shown in the figure, a plurality of reinforcing rods 3 are movably arranged on the chassis 1. The plurality of reinforcing rods 3 are arranged in an array along the length direction of the push rod 22. A reinforcing groove 221 is formed on the side wall of the push rod 22 along its own length direction. A control assembly for controlling the movement of the reinforcing rods 3 is also arranged on the chassis 1. The control assembly controls all the reinforcing rods 3 to move synchronously so that one end of each reinforcing rod 3 enters the reinforcing groove 221. The reinforcing rods 3 are hinged to the chassis 1, and the hinge axis is perpendicular to the length direction of the push rod 22. The control assembly includes a drive rod 31 and a driver 32. The drive rod 31 is slidably connected to the chassis 1, and its length direction and sliding direction are parallel to the sliding direction of the push rod 22. The driver 32 is arranged on the chassis 1. The driver 32 is used to apply a thrust or a pull force to the drive rod 31 to make it move. In this embodiment, the driver 32 is a cylinder. The cylinder is fixedly installed on the chassis 1, and the piston rod of the cylinder is fixedly connected to the end of the drive rod 31. The drive rod 31 is simultaneously movably hinged to all the reinforcing rods 3, and the hinge axis is parallel to the hinge axis of the reinforcing rods 3 relative to the chassis 1. The drive rod 31 and the reinforcing rods 3 can rotate relative to each other, and the hinge points can also move along the length direction of the reinforcing rods 3.

[0034] As Figure 1 and 4 shown, all the reinforcing rods 3 are parallel to each other. When the driving rod 31 moves laterally, all the reinforcing rods 3 swing synchronously in the same direction; one end of the reinforcing rod 3 away from the chassis 1 enters the reinforcing groove 221 and abuts against the groove wall of the reinforcing groove 221. In order to improve the smoothness of the reinforcing rod 3 entering and leaving the reinforcing groove 221, the cross-section of the reinforcing groove 221 is triangular, and along the depth direction of the reinforcing groove 221, the groove width of the reinforcing groove 221 gradually decreases, and one end of the reinforcing rod 3 inserted into the reinforcing groove 221 is provided with a wedge-shaped structure. When the reinforcing rod 3 abuts against the groove wall of the reinforcing groove 221, the push-pull rod 22 is subjected to abutting forces and static frictions from different reinforcing rods 3 at multiple positions of itself, so that the stationary push-pull rod 22 is not prone to twisting or bending deformation, thereby indirectly improving the state stability of the main shaft 12.

[0035] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited accordingly. Therefore, all equivalent changes made according to the structure, shape, and principle of the present application should be covered within the protection scope of the present application.

Claims

1. A large-span photovoltaic support with deformation resistance, comprising a base frame (1), a main shaft (12) and a longitudinal adjustment mechanism (2), wherein the main shaft (12) is rotatably arranged on the base frame (1), the length direction of the main shaft (12) is horizontal, the longitudinal adjustment mechanism (2) is used to rotate the main shaft (12), and the longitudinal adjustment mechanism (2) comprises a driving source (21), characterized in that: The longitudinal adjustment mechanism (2) comprises a push-pull rod (22) and a plurality of conversion assemblies (23); the push-pull rod (22) is slidably connected to the base frame (1); the length direction and sliding direction of the push-pull rod (22) are parallel to the axis of the main shaft (12); the driving source (21) is used to control the movement of the push-pull rod (22); the plurality of conversion assemblies (23) are arranged in an array along the length direction of the main shaft (12); the conversion assemblies (23) are located between the main shaft (12) and the push-pull rod (22); the conversion assemblies (23) are used to convert the thrust generated when the push-pull rod (22) moves into torque and transmit the torque to the main shaft (12).

2. The deformation-resistant large-span photovoltaic bracket according to claim 1, characterized in that: The conversion assembly (23) comprises a conversion gear (231) and a spiral ridge (24); the spiral ridge (24) is fixedly connected to the side wall of the push-pull rod (22); the conversion gear (231) is rotatably arranged on the base frame (1); a motor gear (121) is coaxially fixedly connected to the main shaft (12); the conversion gear (231) and the motor gear (121) are meshed; a transmission hole (2311) is coaxially opened in the middle of the conversion gear (231); a matching groove (2312) is opened on the hole wall of the transmission hole (2311); the matching groove (2312) allows the spiral ridge (24) to pass through.

3. The deformation-resistant large-span photovoltaic support according to claim 2, characterized in that: The number of the spiral ridges (24) is three, and the three spiral ridges (24) are arranged in a circumferential array around the push-pull rod (22). Abutment balls (2313) are embedded in the groove wall of the matching groove (2312), and the abutment balls (2313) and the side walls of the spiral ridges (24) are in rolling abutment with each other.

4. The deformation-resistant large-span photovoltaic support according to claim 3, characterized in that: The conversion assembly (23) further comprises an auxiliary gear (232), the number of the auxiliary gears (232) being at least two, the auxiliary gears (232) being rotatably connected to the base frame (1), the rotation axis being parallel to the length direction of the push-pull rod (22), the auxiliary gear (232) being meshed with the conversion gear (231), and the meshing point between the auxiliary gear (232) and the conversion gear (231) being located on the side of the axis of the conversion gear (231) away from the motor gear (121).

5. The deformation-resistant large-span photovoltaic support according to claim 2, characterized in that: A transmission box (11) is fixedly connected to the base frame (1), the conversion assembly (23) is located in the transmission box (11), a stabilizing ball (233) is embedded on the inner wall of the transmission box (11), a stabilizing ring groove (2314) is coaxially formed on the end surface of the conversion gear (231), and the bottom of the stabilizing ring groove (2314) and the stabilizing ball (233) are in rolling contact.

6. A deformation-resistant large-span photovoltaic support according to any one of claims 1 to 5, characterized in that: The driving source (21) comprises a driving motor (211) and a driving nut plate (212); the driving motor (211) is arranged on the base frame (1); the driving nut plate (212) is rotatably arranged on the base frame (1); the output shaft of the driving motor (211) is connected to the driving nut plate (212) via a reducer; the driving nut plate (212) and the push-pull rod (22) are coaxially threadedly connected.

7. A deformation-resistant large-span photovoltaic support according to any one of claims 2 to 5, characterized in that: A plurality of reinforcing rods (3) are movably provided on the base frame (1), and the plurality of reinforcing rods (3) are arranged in an array along the length direction of the push-pull rod (22). A reinforcing groove (221) is provided on the side wall of the push-pull rod (22) along its length direction. A control component for controlling the movement of the reinforcing rod (3) is provided on the base frame (1), and one end of the reinforcing rod (3) enters the reinforcing groove (221) and abuts against the groove wall of the reinforcing groove (221).

8. The deformation-resistant large-span photovoltaic support according to claim 7, characterized in that: The reinforcement rod (3) is hinged to the base frame (1), and the hinge axis is perpendicular to the length direction of the push-pull rod (22). The control component includes a driving rod (31) and a driver (32). The driving rod (31) is slidably connected to the base frame (1), and its length direction and sliding direction are parallel to the sliding direction of the push-pull rod (22). The driver (32) is arranged on the base frame (1), and the driver (32) is used to apply a thrust or a pull to the driving rod (31). The driving rod (31) is simultaneously movably hinged to all the reinforcement rods (3).

9. The deformation-resistant large-span photovoltaic support according to claim 7, characterized in that: Along the depth direction of the reinforcement groove (221), the groove width of the reinforcement groove (221) gradually decreases, and one end of the reinforcement rod (3) inserted into the reinforcement groove (221) is provided with a wedge-shaped structure.

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