A large-span photovoltaic support resistant to deformation

Abstract

The application relates to a large-span photovoltaic support with high deformation resistance, belonging to the field of photovoltaic supports, which comprises a chassis, a main shaft and a longitudinal adjusting mechanism, the main shaft is rotationally arranged on the chassis, the length direction of the main shaft is a horizontal direction, the longitudinal adjusting mechanism is used for rotating the main shaft, the longitudinal adjusting mechanism 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 chassis, the length direction of the push-pull rod and the sliding direction are parallel to the axis of the main shaft, the driving source is used for controlling the movement of the push-pull rod, the plurality of conversion assemblies are arranged in an array along the length direction of the main shaft, the conversion assemblies are located between the main shaft and the push-pull rod, and the conversion assemblies are used for converting the pushing force generated when the push-pull rod moves into torque and transmitting the torque to the main shaft. The main shaft of the support has high deformation resistance.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of photovoltaic support, in particular to a large-span photovoltaic support resistant to deformation. BACKGROUND

[0002] Photovoltaic is the abbreviation of solar photovoltaic power generation system, which is a new type of power generation system that converts solar radiation energy into electric energy by using solar cell semiconductor material photovoltaic effect, and has independent operation and grid-connected operation. Solar photovoltaic support is a special support 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 support, and the photovoltaic support needs to have an angle adjustment function to adjust the angle of the photovoltaic panel according to the angle of the sun to improve the light collection efficiency. Angle adjustment includes longitudinal adjustment and transverse adjustment. Longitudinal adjustment makes the photovoltaic panel adapt to the sun height at different times of the year, and transverse adjustment makes the photovoltaic panel adapt to the different sun positions from morning to evening in a day.

[0004] For the mechanism of longitudinal angle adjustment, the form is usually a main shaft rotatingly arranged on a fixed frame. All photovoltaic panels are relatively installed on the main shaft, and the axis of the main shaft is horizontal, so that it can be rotated vertically. The rotating driving source is usually arranged at 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 transverse span of the photovoltaic support is large, the overall length of the main shaft is long, which causes the part of the main shaft close to the driving source to be relatively stable, and the part far from the driving source to be prone to deformation due to the elasticity of the main shaft material. Especially when the driving source starts to adjust, the main shaft far from the driving source will shake for a long time due to inertia after rotating, which will cause fatigue deformation or decrease of the structural strength of the main shaft. SUMMARY

[0005] In order to improve the above problems, the present application provides a large-span photovoltaic support resistant to deformation.

[0006] The large-span photovoltaic support resistant to deformation provided by the present application adopts the following technical scheme:

[0007] The application discloses a large-span photovoltaic support with deformation resistance, which comprises a chassis, a main shaft and a longitudinal adjusting mechanism, the main shaft is rotationally arranged on the chassis, the length direction of the main shaft is horizontal, the longitudinal adjusting mechanism is used for rotating the main shaft, the longitudinal adjusting mechanism comprises a driving source, a push-pull rod and a plurality of conversion assemblies, the push-pull rod is slidably connected with the chassis, the length direction of the push-pull rod is parallel to the sliding direction and the axis of the main shaft, the driving source is used for controlling the movement of the push-pull rod, the plurality of conversion assemblies are arranged in an array along the length direction of the main shaft, the conversion assemblies are located between the main shaft and the push-pull rod, and the conversion assemblies are used for converting the pushing force generated by the movement of the push-pull rod into torque and transmitting the torque to the main shaft.

[0008] By adopting the technical scheme, a plurality of torque transmission points are established along the length direction of the main shaft, the number of "support points" of the main shaft during rotation is relatively large, the distribution is relatively uniform, the action form of the push-pull rod is moving along the length direction of the push-pull rod, the deformation resistance of the material in the tensile or compressive direction is better than the deformation resistance in the torsion direction, the starting and stopping synchronization of the torque transmission points is relatively high, and the overall deformation resistance of the main shaft during rotation is relatively high.

[0009] Preferably, the conversion assembly comprises a conversion gear and a spiral protrusion, the spiral protrusion is fixedly connected to the side wall of the push-pull rod, the conversion gear is rotationally arranged on the chassis, a motor gear is coaxially fixedly connected to the main shaft, the conversion gear is engaged with the motor gear, a transmission hole is coaxially arranged in the middle part of the conversion gear, a matching groove is arranged on the hole wall of the transmission hole, and the spiral protrusion passes through the matching groove.

[0010] By adopting the technical scheme, when the push-pull rod moves along the length direction of the push-pull rod, the spiral protrusion applies a pushing force to the groove wall of the matching groove, and the conversion gear is rotated by the pushing force along the circumferential direction of the conversion gear.

[0011] Preferably, the number of the spiral protrusions is three, the three spiral protrusions are arranged in an array around the circumferential direction of the push-pull rod, the groove wall of the matching groove is embedded with an abutting ball, and the abutting ball and the side wall of the spiral protrusion are in rolling abutment.

[0012] By adopting the technical scheme, the rolling of the abutting ball improves the fluency of the spiral protrusion applying the pushing force to the groove wall of the matching groove.

[0013] Preferably, the conversion assembly further comprises an auxiliary gear, the number of the auxiliary gears is at least two, the auxiliary gears are rotationally connected with the chassis, the rotation axis is parallel to the length direction of the push-pull rod, the auxiliary gears are engaged with the conversion gear, and the engagement points of the auxiliary gears and the conversion gear are located on the side, away from the motor gear, of the axis of the conversion gear.

[0014] Preferably, a transmission box is fixedly connected to the base frame, the conversion assembly is located in the transmission box, and a stabilizing ball is embedded on the inner wall of the transmission box; a stabilizing ring groove is coaxially arranged on the end surface of the conversion gear; and the groove bottom of the stabilizing ring groove and the stabilizing ball rollingly abut.

[0015] By adopting the above technical scheme, the auxiliary gear and the abutting ball support the conversion gear in different directions respectively, so that the conversion gear can stably rotate.

[0016] Preferably, the driving source comprises a driving motor and a driving nut plate; the driving motor is arranged on the base frame; the driving nut plate is rotationally arranged on the base frame; the output shaft of the driving motor is connected with the driving nut plate through a speed reducer; and the driving nut plate and the push-pull rod are coaxially and threadedly connected.

[0017] By adopting the above technical scheme, the threaded transmission has high precision and stability; and under the action of the threaded transmission, the push-pull rod can move laterally.

[0018] Preferably, a plurality of reinforcing rods are movably arranged on the base frame and are arrayed along the length direction of the push-pull rod; a reinforcing groove is arranged on the side wall of the push-pull rod along the length direction of the push-pull rod; the base frame is further provided with a control assembly for controlling the movement of the reinforcing rods; and one end of each reinforcing rod enters the reinforcing groove and abuts against the groove wall of the reinforcing groove.

[0019] Preferably, the reinforcing rods and the base frame are hingedly connected, the hinge axis is perpendicular to the length direction of the push-pull rod; the control assembly comprises a driving rod and a driver; the driving rod is slidably connected with the base frame, the length direction of the driving rod is parallel to the sliding direction of the push-pull rod; the driver is arranged on the base frame; the driver is used for applying a pushing force or a pulling force to the driving rod; and the driving rod is hingedly connected with all the reinforcing rods.

[0020] By adopting the above technical scheme, when the push-pull rod is kept in a stationary state, one end of each reinforcing rod extends into the reinforcing groove and abuts against the groove wall of the reinforcing groove; at this time, a plurality of positions of the push-pull rod are subjected to the abutting force and the static friction force from different reinforcing rods, so that the push-pull rod is not easy to be twisted or deformed, thereby indirectly improving the state stability of the main shaft.

[0021] Preferably, along the depth direction of the reinforcing groove, the groove width of the reinforcing groove gradually decreases; and the end of the reinforcing rod inserted into the reinforcing groove is provided with a wedge structure.

[0022] By adopting the above technical scheme, the end of the reinforcing rod can more smoothly enter and exit the reinforcing groove.

[0023] In summary, the present application has at least one of the following beneficial technical effects:

[0024] 1. Through the arrangement of the push-pull rod and the conversion assembly, multiple conversion assemblies establish multiple torque transmission points along the length direction of the main shaft, the number of "support points" of the main shaft when rotating is larger, and the distribution is more uniform, the action form of the push-pull rod is to move along the length direction of itself, since the anti-deformation ability of the material in the tensile or compressive direction is better than the anti-torsional deformation ability, the start-stop synchronization of each torque transmission point is higher, and therefore the overall anti-deformation ability of the main shaft when rotating is higher.

[0025] 2. Through the arrangement of the reinforcing rod and the driver, in the state that the push-pull rod remains stationary, one end of all the reinforcing rods extends into the reinforcing groove and abuts against the groove wall of the reinforcing groove, at this time, multiple positions of the push-pull rod are subjected to abutting force and static friction force from different reinforcing rods, so that the push-pull rod is not easy to be twisted or bent and deformed, thereby indirectly improving the state stability of the main shaft. BRIEF DESCRIPTION OF DRAWINGS

[0026] Figure 1 is a structural schematic view of a large-span photovoltaic support for embodying anti-deformation in the embodiment of the present application.

[0027] Figure 2 is a structural schematic view of a cooperation structure of a conversion gear and a push-pull rod in the embodiment of the present application.

[0028] Figure 3 is a structural sectional view of a coaxial cooperation structure of a push-pull rod and a conversion gear in the embodiment of the present application.

[0029] Figure 4 is a structural schematic view of a working principle of a reinforcing rod and a control assembly in the embodiment of the present application.

[0030] BRIEF DESCRIPTION OF DRAWINGS: 1, base frame; 11, transmission box; 12, main shaft; 121, motorized gear; 13, mounting bracket; 2, longitudinal adjustment mechanism; 21, driving source; 211, driving motor; 212, driving nut plate; 22, push-pull rod; 221, reinforcing groove; 23, conversion assembly; 231, conversion gear; 2311, transmission hole; 2312, cooperation groove; 2313, abutting ball; 2314, stabilizing ring groove; 232, auxiliary gear; 233, stabilizing ball; 24, helical rib; 3, reinforcing rod; 31, driving rod; 32, driver. DETAILED DESCRIPTION

[0031] The following will be described in detail in combination with the accompanying Figures 1-4 The present application will be further described in detail.

[0032] The embodiment of the present application discloses a large-span photovoltaic support for embodying anti-deformation, like Figure 1As shown, including the chassis 1, the main shaft 12 and 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 direction, and a plurality of mounting brackets 13 for mounting photovoltaic panels are fixedly arranged on the main shaft 12 along the length direction of the main shaft 12. The longitudinal adjustment mechanism 2 is used for rotating the main shaft 12, and the rotation direction is vertical direction.

[0033] As shown in Figure 1 , 2 and 3, the longitudinal adjustment mechanism 2 includes a driving source 21, a push-pull rod 22 and a plurality of conversion assemblies 23, the push-pull rod 22 and the chassis 1 are slidingly connected, the length direction of the push-pull rod 22 and the sliding direction are both parallel to the axis of the main shaft 12, and the driving source 21 is used for controlling the movement of the push-pull rod 22; a plurality of conversion assemblies 23 are arranged in an array along the length direction of the main shaft 12, the conversion assembly 23 is located between the main shaft 12 and the push-pull rod 22, and it is used for converting the pushing force generated when the push-pull rod 22 moves into torque and transmitting the torque to the main shaft 12. A plurality of transmission boxes 11 are fixedly connected on the chassis 1, and a single conversion assembly 23 is located in one transmission box 11. The conversion assembly 23 includes a conversion gear 231 and a spiral protrusion 24, the spiral protrusion 24 is fixedly connected to the side wall of the push-pull rod 22, the number of the spiral protrusions 24 of each conversion assembly 23 is three, the three spiral protrusions 24 are arranged in an array around the circumference of the push-pull rod 22, and the spiral inclination angle of the spiral protrusion 24 relative to the push-pull rod 22 is 45°. The conversion gear 231 is coaxially sleeved outside the push-pull rod 22, and a transmission hole 2311 is coaxially formed in the middle of the conversion gear 231 for the push-pull rod 22 to pass through; three matching grooves 2312 are formed on the hole wall of the transmission hole 2311, and a single matching groove 2312 is for one spiral protrusion 24 to pass through. The abutting ball 2313 is embedded on the groove wall of the matching groove 2312, and the abutting ball 2313 and the side wall of the spiral protrusion 24 rollingly abut, when the push-pull rod 22 moves along the length direction of itself, the conversion gear 231 is rotated by the pushing force along the circumference of itself.

[0034] As shown in Figure 2 and 3As shown, the main shaft 12 is coaxially fixedly connected with a plurality of motor gears 121, and each motor gear 121 is engaged with a conversion gear 231. The conversion assembly 23 further comprises at least two auxiliary gears 232, the auxiliary gears 232 are rotatably connected with the chassis 1, the rotation axis is parallel to the length direction of the push-pull rod 22, the auxiliary gears 232 are engaged with the conversion gear 231, and the engagement 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, thereby improving the stability of the conversion gear 231 during rotation. A stable ring groove 2314 is coaxially formed in the end face of the conversion gear 231, and a stable ball 233 is embedded in the inner wall of the transmission box 11. The groove bottom of the stable ring groove 2314 and the stable ball 233 rollingly abut, and the stable ball 233 axially abuts against the conversion gear 231, thereby improving the axial stability of the conversion gear 231. The number of stable balls 233 in each stable ring groove 2314 is three.

[0035] As shown in Figure 1 The driving source 21 comprises a driving motor 211 and a driving nut plate 212. The driving motor 211 is fixedly arranged on the chassis 1, and the driving nut plate 212 is rotatably arranged on the chassis 1. The output shaft of the driving motor 211 is connected with the driving nut plate 212 through a speed reducer, that is, the driving motor 211 controls the rotation of the driving nut plate 212 after being started. The driving nut plate 212 is coaxially and threadedly connected with the push-pull rod 22. The threaded transmission has high precision and stability. Under the action of the threaded transmission, the push-pull rod 22 can move horizontally.

[0036] As shown in Figure 1 and 4 A plurality of reinforcing rods 3 are movably arranged on the chassis 1. The reinforcing rods 3 are arrayed along the length direction of the push-pull rod 22. A reinforcing groove 221 is formed in the side wall of the push-pull rod 22 along the length direction of the push-pull rod 22. The chassis 1 is further provided with a control assembly for controlling the movement of the reinforcing rods 3. 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 rod 3 is hingedly connected with the chassis 1, and the hinge axis is perpendicular to the length direction of the push-pull rod 22. The control assembly comprises a driving rod 31 and a driver 32. The driving rod 31 is slidably connected with the chassis 1, and the length direction and the sliding direction of the driving rod 31 are parallel to the sliding direction of the push-pull rod 22. The driver 32 is arranged on the chassis 1, and is used to apply a pushing force or a pulling force to the driving rod 31 to move the driving rod 31. In the embodiment, the driver 32 is a pneumatic cylinder, which is fixedly mounted on the chassis 1. The piston rod of the pneumatic cylinder is fixedly connected with the end of the driving rod 31. The driving rod 31 is movably hingedly connected with all the reinforcing rods 3. The hinge axis is parallel to the hinge axis of the reinforcing rod 3 relative to the chassis 1. The driving rod 31 and the reinforcing rod 3 can relatively rotate, and the hinge point can move along the length direction of the reinforcing rod 3.

[0037] As shown in Figure 1 and 4 All reinforcing rods 3 are parallel to each other, and when the driving rod 31 moves laterally, all reinforcing rods 3 swing synchronously and in the same direction; the 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, the groove width of the reinforcing groove 221 gradually decreases along the depth direction of the reinforcing groove 221, and the 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, multiple positions of the push-pull rod 22 are subjected to abutting force and static friction force from different reinforcing rods 3, so that the static push-pull rod 22 is not easy to twist or bend and deform, thereby indirectly improving the stability of the main shaft 12 in the state.

[0038] The above are preferred embodiments of the present application, and are not intended to limit the protection scope of the present application, therefore: all equivalent changes made on the basis of the structure, shape, principle of the present application should be covered within the protection scope of the present application.

Claims

1. A deformation-resistant, large-span photovoltaic support, comprising a base frame (1), a main shaft (12), and a longitudinal adjustment mechanism (2), wherein the main shaft (12) is rotatably mounted 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) includes a drive source (21), characterized in that: The longitudinal adjustment mechanism (2) includes a push-pull rod (22) and multiple conversion components (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 drive source (21) is used to control the movement of the push-pull rod (22). The multiple 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). The component (23) is used to convert the thrust generated when the push-pull rod (22) moves into torque and transmit the torque to the main shaft (12); the conversion component (23) includes a conversion gear (231) and a helical convex rib (24), the helical convex rib (24) is fixedly connected to the side wall of the push-pull rod (22), the conversion gear (231) is rotatably mounted on the base frame (1), and a motor gear (121) is coaxially fixedly connected to the main shaft (12), the conversion gear (231) and the motor gear (121) mesh. The conversion gear (231) has a transmission hole (2311) coaxially formed in the middle. A mating groove (2312) is formed on the wall of the transmission hole (2311) for the passage of a helical ridge (24). There are three helical ridges (24) arranged in a circumferential array around the push-pull rod (22). An abutment ball (2313) is embedded in the wall of the mating groove (2312). The abutment ball (2313) and the helical ridge (2311)... 4) The side wall rolls against the conversion assembly (23); the conversion assembly (23) also includes an auxiliary gear (232), the number of which is at least two, the auxiliary gear (232) is rotatably connected to the base frame (1), the rotation axis is parallel to the length direction of the push-pull rod (22), the auxiliary gear (232) meshes with the conversion gear (231), and the meshing point of the auxiliary gear (232) and the conversion gear (231) is located on the side of the axis of the conversion gear (231) away from the motor gear (121).

2. The deformation-resistant large-span photovoltaic support according to claim 1, characterized in that: A transmission box (11) is fixedly connected to the base frame (1). The conversion component (23) is located inside the transmission box (11). A stabilizing ball (233) is embedded in the inner wall of the transmission box (11). A stabilizing ring groove (2314) is coaxially opened on the end face of the conversion gear (231). The bottom of the stabilizing ring groove (2314) and the stabilizing ball (233) roll against each other.

3. A deformation-resistant large-span photovoltaic support according to any one of claims 1-2, characterized in that: The drive source (21) includes a drive motor (211) and a drive nut disc (212). The drive motor (211) is mounted on the base frame (1), and the drive nut disc (212) is rotatably mounted on the base frame (1). The output shaft of the drive motor (211) is connected to the drive nut disc (212) through a reducer. The drive nut disc (212) and the push-pull rod (22) are coaxially threaded together.

4. A deformation-resistant large-span photovoltaic support according to any one of claims 1-2, characterized in that: Multiple reinforcing rods (3) are movably mounted on the base frame (1). The multiple 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 own length direction. The base frame (1) is also provided with a control component for controlling the movement of the reinforcing rods (3). One end of the reinforcing rod (3) enters the reinforcing groove (221) and abuts against the groove wall of the reinforcing groove (221).

5. A deformation-resistant large-span photovoltaic support according to claim 4, characterized in that: The reinforcing rod (3) and the base frame (1) are hinged together, and the hinge axis is perpendicular to the length direction of the push-pull rod (22). The control component includes a drive rod (31) and a driver (32). The drive rod (31) and the base frame (1) are slidably connected, and its length direction and sliding direction are parallel to the sliding direction of the push-pull rod (22). The driver (32) is mounted on the base frame (1). The driver (32) is used to apply a pushing or pulling force to the drive rod (31). The drive rod (31) is simultaneously hinged to all the reinforcing rods (3).

6. A deformation-resistant large-span photovoltaic support according to claim 4, characterized in that: Along the depth direction of the reinforcing groove (221), the width of the reinforcing groove (221) gradually decreases, and the end of the reinforcing rod (3) inserted into the reinforcing groove (221) is provided with a wedge structure.

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