Roof photovoltaic mounting bracket with adjustable angle

Abstract

An angle-adjustable roof photovoltaic mounting bracket disclosed by the present invention comprises a base, a support frame rotationally connected with the base and a photovoltaic mechanism rotationally connected with the support frame, the base comprises a base frame and a main control box arranged on the base frame, and a first angle adjusting mechanism electrically connected with the main control box is arranged between the support frame and the base. The first angle adjusting mechanism is used for adjusting the pitching angle of the supporting frame, the photovoltaic mechanism comprises a mounting frame rotationally connected with the supporting frame and a photovoltaic panel mounted on the mounting frame, and a solar tracking controller electrically connected with the main control box is arranged on the mounting frame; a second angle adjusting mechanism electrically connected with the main control box is further arranged between the mounting frame and the supporting frame, and the second angle adjusting mechanism can drive the mounting frame to conduct angle adjustment, so that the photovoltaic panel can track the solar azimuth angle to conduct angle change, and through two-stage adjustment of the first angle adjusting mechanism and the second angle adjusting mechanism, the angle of the photovoltaic panel can be adjusted. The photovoltaic panel can be always perpendicular to sunlight, and the light energy receiving efficiency is remarkably improved.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of photovoltaic power generation, and particularly relates to a roof photovoltaic mounting support with adjustable angle. BACKGROUND

[0002] As a clean and renewable new energy, solar energy has become an important part of the energy strategy of each country. In recent years, photovoltaic technology, as one of the core ways of solar energy utilization, has developed rapidly. The roof photovoltaic system has been widely used in residential buildings, commercial buildings and other scenes due to its advantages of flexible installation and non-occupancy of additional land resources.

[0003] The roof photovoltaic mounting supports in the prior art are mostly fixed structures, and the angle thereof cannot be adjusted after installation. The angle of the photovoltaic panel cannot be flexibly adjusted according to seasonal changes, geographical positions and the movement of the sun position in a day, so that the photovoltaic panel cannot always receive sunlight at the best angle, the light energy utilization rate is low, and the power generation efficiency is affected. SUMMARY

[0004] In view of the technical problems existing in the prior art, the application provides a roof photovoltaic mounting support with adjustable angle.

[0005] In order to achieve the above purpose, the application adopts the following technical scheme:

[0006] A roof photovoltaic mounting support with adjustable angle comprises:

[0007] A base comprises a base frame and a main control box arranged on the base frame;

[0008] A support frame is rotationally connected with the base, and a first angle adjusting mechanism electrically connected with the main control box is connected between the support frame and the base, and the first angle adjusting mechanism is used for adjusting the pitch angle of the support frame;

[0009] A photovoltaic mechanism is rotationally connected with the support frame, and the photovoltaic mechanism comprises a mounting frame rotationally connected with the support frame and a photovoltaic panel arranged on the mounting frame. A solar tracking controller electrically connected with the main control box is arranged on the mounting frame, and a second angle adjusting mechanism electrically connected with the main control box is further arranged between the mounting frame and the support frame. The second angle adjusting mechanism can drive the mounting frame to adjust the angle, so that the photovoltaic panel can change the angle by tracking the solar azimuth angle.

[0010] Further, the first angle adjusting mechanism comprises two first bearing seats connected with the base frame and arranged at intervals, a mounting plate rotatably mounted between the two first bearing seats, a first driving unit mounted at the lower end of the mounting plate and electrically connected with the main control box, a first screw connected with the output shaft of the first driving unit, and a first connecting ring screwed on the first screw, wherein the first connecting ring is rotatably connected with the support frame.

[0011] Further, a double lug joint is arranged on the outer peripheral wall of the first connecting ring, and a single lug joint is correspondingly arranged on the support frame, wherein the double lug joint and the single lug joint are rotatably connected through a pin shaft, and the both ends of the pin shaft are provided with anti-dropping clamps.

[0012] Further, the second angle adjusting mechanism comprises a second bearing seat mounted on the support frame, a second screw mounted at one end in the second bearing seat, a second driving unit arranged on the support frame and connected with the other end of the second screw, a second connecting ring screwed on the second screw, and a connecting rod connected with the second connecting ring, wherein one end of the connecting rod is rotatably connected with the second connecting ring, and the other end is rotatably connected with the photovoltaic panel.

[0013] Further, the support frame is in the shape of a right trapezoid, and the structure comprises two mutually perpendicular first right-angle sides, a second right-angle side, and an oblique side connecting the non-right-angle ends of the two right-angle sides, wherein the oblique side between the two right-angle sides forms an inclined support surface, the first right-angle side is rotatably connected with the base frame, and the mounting frame is rotatably connected on the inclined support surface of the oblique side.

[0014] Further, two third bearing seats are arranged on the two sides of the support frame, respectively, and a rotating shaft connected with the third bearing seats is arranged on the mounting frame, so that the mounting frame is rotatably mounted between the two third bearing seats through the rotating shaft, and the mounting frame can rotate around the rotating shaft.

[0015] Further, the base further comprises an adjusting mechanism arranged on the base frame, and the adjusting mechanism is used for adapting the base frame to different roof slopes.

[0016] Further, the base frame comprises two L-shaped supports arranged at intervals, a horizontal support fixedly connected at the upper ends of the two L-shaped supports, a back plate detachably connected on the vertical parts of the two L-shaped supports, and an inclined frame obliquely arranged on the two L-shaped supports, wherein one end of the inclined frame is fixedly connected with the vertical part of the L-shaped support, and the other end is fixedly connected with the horizontal part of the L-shaped support.

[0017] Further, the adjusting mechanism comprises two adjusting assemblies respectively and one-to-one corresponding connected on the horizontal part of the L-shaped support, the adjusting assembly comprises an adjusting screw hole opened on the horizontal part, an adjusting screw rod screwed with the adjusting screw hole, a U-shaped supporting leg rotationally connected with the bottom of the adjusting screw rod and a rotating handle detachably connected with the top of the adjusting screw rod.

[0018] Further, the bottom surface of each U-shaped supporting leg is connected with a buffer assembly, the buffer assembly comprises a ring-shaped guide seat with one end connected with the bottom surface of the U-shaped supporting leg, a compression spring sleeved in the ring-shaped guide seat and a silica gel pad connected with the bottom end of the compression spring.

[0019] To sum up, the beneficial effects of the present application are: 1. Two-stage angle adjustment, significantly improving light energy utilization efficiency and optimizing power generation performance. The first angle adjusting mechanism can adjust the pitch angle of the support frame according to the seasonal change of the solar altitude angle (high in summer and low in winter), and the second angle adjusting mechanism cooperates with the solar tracking controller to respond to the change of the solar azimuth angle (from east to west) in real time. Through the dynamic adjustment of "pitch angle + azimuth angle" in two dimensions, the photovoltaic panel always maintains the best included angle (close to vertical) with the direction of sunlight, which greatly improves the light energy receiving efficiency compared with the traditional fixed support. 2. The base frame adopts symmetrical arrangement of double L-shaped supports, which forms a right triangle stable structure with the inclined frame, has strong bending moment and lateral force (wind and vibration) resistance, can uniformly disperse the load above (photovoltaic panel, angle adjusting mechanism, etc.), and avoids the inclination or collapse caused by single-point stress. 3. The inclined support surface (30°-60°) of the right trapezoidal support frame directly matches the initial installation angle of the photovoltaic panel, reduces the initial adjustment amount of the second angle adjusting mechanism, reduces energy consumption, provides a stable reference for azimuth angle adjustment, and further guarantees the continuity of light energy absorption. 4. The adjusting assembly realizes the fine adjustment of the height of the base frame through two independent adjusting screw rods, which can adapt to different slope scenarios such as inclined roof and irregular roof, does not need customized production, reduces processing cost, ensures the horizontal installation of the base frame, and guarantees the overall stability. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 is a structural diagram of the present application Figure One .

[0021] Figure 2 is a structural diagram of the present application Figure Two .

[0022] Figure 3 is Figure 2 a partial enlarged view of A in the present application.

[0023] Figure 4 is a structural diagram of the present application Figure Three .

[0024] In the figure, 100 - base, 110 - L-shaped support, 111 - vertical part, 112 - horizontal part, 120 - cross support, 121 - connecting rod, 130 - back plate, 140 - inclined frame, 150 - main control box, 200 - support frame, 210 - first right angle side, 211 - first rod body, 2110 - single ear joint, 220 - second right angle side, 221 - second rod body, 221A - third bearing seat, 300 - photovoltaic mechanism, 310 - mounting frame, 311 - solar tracking controller, 320 - photovoltaic panel, 400 - first angle adjusting mechanism, 410 - first bearing seat, 420 - mounting plate, 430 - first driving unit, 440 - first screw rod, 450 - first connecting ring, 451 - double ear joint, 500 - second angle adjusting mechanism, 510 - second driving unit, 520 - second screw rod, 530 - second connecting ring, 540 - connecting rod, 550 - second bearing seat, 600 - adjusting assembly, 610 - adjusting screw rod, 620 - U-shaped support foot, 630 - rotating handle, 700 - buffer assembly, 710 - annular guide seat, 720 - compression spring, 730 - silica gel pad. DETAILED DESCRIPTION

[0025] The present application is further illustrated below in conjunction with specific drawings.

[0026] Please refer to Figure 1The application provides an adjustable angle roof photovoltaic mounting support, which comprises a base 100, a support frame 200 rotationally connected with the base 100 and a photovoltaic mechanism 300 rotationally connected with the support frame 200. The base 100 comprises a base frame and a main control box 150 arranged on the base frame. A first angle adjusting mechanism 400 electrically connected with the main control box 150 is connected between the support frame 200 and the base 100, and the first angle adjusting mechanism 400 is used for adjusting the pitch angle of the support frame 200. The photovoltaic mechanism 300 comprises a mounting frame 310 rotationally connected with the support frame 200 and a photovoltaic panel 320 arranged on the mounting frame 310, and a solar tracking controller 311 electrically connected with the main control box 150 is arranged on the mounting frame 310. A second angle adjusting mechanism 500 electrically connected with the main control box 150 is further arranged between the mounting frame 310 and the support frame 200, and the second angle adjusting mechanism 500 can drive the mounting frame 310 to adjust the angle, so that the photovoltaic panel 320 can track the solar azimuth angle to change the angle. The first angle adjusting mechanism 400 can adjust the pitch angle of the support frame 200 according to the seasonal change of the solar altitude angle (for example, high in summer and low in winter), so that the photovoltaic panel 320 can always maintain a reasonable angle with the sunlight in different seasons. The second angle adjusting mechanism 500 cooperates with the solar tracking controller 311 to respond to the change of the solar azimuth angle (from east to west) in a day in real time, drives the photovoltaic panel 320 to dynamically deflect, so that the photovoltaic panel 320 can always maintain perpendicular to the direction of the sunlight. Compared with the conventional fixed angle support, the double-stage adjustment of the first angle adjusting mechanism 400 and the second angle adjusting mechanism 500 can make the photovoltaic panel 320 always maintain perpendicular to the sunlight, significantly improves the light energy receiving efficiency, and thus improves the light energy utilization rate.

[0027] The base frame comprises two L-shaped supports 110 arranged at intervals, a horizontal support 120 fixed to the upper ends of the two L-shaped supports 110, a back plate 130 bolted to the vertical portions 111 of the two L-shaped supports 110, and an inclined support 140 arranged obliquely on the two L-shaped supports 110. The L-shaped support 110 comprises a vertical portion 111 and a horizontal portion 112 connected perpendicularly to the vertical portion 111. One end of the inclined support 140 is fixed to the vertical portion 111 of the L-shaped support 110, and the other end is fixed to the horizontal portion 112 of the L-shaped support 110. The two L-shaped supports 110 (horizontal portion 112 + vertical portion 111) arranged at intervals form the core support unit of the base frame, which naturally has the ability to resist bending moments due to its right-angle structure. The horizontal portion 112 provides bottom support by contacting the roof, and the vertical portion 111 extends upward to form a vertical load-bearing main body. The symmetrical arrangement can evenly distribute the load above (such as the weight of the main control box 150, the support frame 200, and the photovoltaic mechanism 300) to two support points, avoiding tilting or collapse caused by excessive stress on a single point. The two ends of the inclined support 140 are fixed to the vertical portion 111 and the horizontal portion 112 of the L-shaped support 110, respectively, and together with the right-angle side of the L-shaped support 110 form a right-angled triangle. The geometric stability of the triangular structure can significantly enhance the lateral force resistance of the L-shaped support 110 (such as the horizontal thrust generated by wind and vibration). The back plate 130 is bolted to the vertical portions 111 of the two L-shaped supports 110, which not only increases the sectional moment of inertia of the vertical portion 111 (improving the bending resistance), but also serves as a mounting carrier for the main control box 150 and the angle adjustment mechanism. The local load is dispersed to the entire vertical portion 111 through the back plate 130, avoiding stress concentration.

[0028] Please refer to Figure 2 and Figure 3 The base 100 further comprises an adjustment mechanism arranged on the horizontal portion 112 of the base frame, which is used to adapt the base frame to different roof slopes. The adjustment mechanism comprises two adjustment assemblies 600 respectively and correspondingly connected to the horizontal portion 112 of the L-shaped support 110. The adjustment assembly 600 comprises an adjustment screw hole opened on the horizontal portion 112, an adjustment screw rod 610 screwed with the adjustment screw hole, a U-shaped support leg 620 rotationally connected to the bottom of the adjustment screw rod 610, and a rotating handle 630 detachably connected to the top of the adjustment screw rod 610. A through hole is opened at one end of the adjustment screw rod 610 away from the U-shaped support leg 620, and the rotating handle 630 is gap-fitted with the through hole. The horizontal portions 112 of the two L-shaped supports 110 correspond to one adjustment assembly 600 respectively, and the height can be adjusted independently. When there is a slope on the roof (such as a sloping roof or an irregular roof), the height of the U-shaped support leg 620 on the corresponding side can be raised or lowered by rotating the adjustment screw rods 610 on both sides, so that the entire base frame remains in a horizontal state. There is no need to customize the support according to the roof slope, and standard components can be uniformly produced, which significantly improves the processing efficiency and reduces the cost of customized production.

[0029] Please continue to refer to Figure 3 The bottom surface of each U-shaped support leg 620 is connected with a buffer assembly 700, which includes a ring-shaped guide seat 710 screwed with the bottom surface of the U-shaped support leg 620, a compression spring 720 sleeved in the ring-shaped guide seat 710, and a silica gel pad 730 connected with the bottom end of the compression spring 720. The bottom of the silica gel pad 730 can be provided with transversely and longitudinally staggered silica gel protruding strips. The compression spring 720 is sleeved in the ring-shaped guide seat 710, and when the photovoltaic support is subjected to external force (such as strong wind, earthquake, and slight settlement of the roof), the spring can absorb impact energy by compression or elongation. The buffer assembly 700 further eliminates the gap of “hard matching” (such as the slight protrusions on the roof surface) on the basis of the above adjustment through elastic and flexible contact, so that the U-shaped support leg 620 is more closely and conformably contacted with the roof, and finally ensures the stability of the entire support system under various roof conditions.

[0030] In another embodiment, the U-shaped support leg 620 can also be preferably formed by bending a steel plate with a thickness of 8 mm, and the bottom thereof is provided with an anti-skid rubber pad to increase the friction with the roof surface.

[0031] Please continue to refer to Figure 2 The main control box 150 is provided with a servo driver, and the solar tracking controller 311 is electrically connected with the servo driver. The servo driver is also electrically connected with the first angle adjusting mechanism 400 and the second angle adjusting mechanism 500. The servo driver serves as an “intermediate converter”, receives the weak electric control signal output by the solar tracking controller 311, and converts it into a strong electric driving signal suitable for the first / second angle adjusting mechanism 500, while simultaneously feeding back the running state of the executing mechanism in real time.

[0032] The first angle adjusting mechanism 400 comprises two first bearing seats 410 connected with the base frame and arranged at intervals, a mounting plate 420 rotatably mounted between the two first bearing seats 410, a first driving unit 430 mounted at the lower end of the mounting plate 420 and electrically connected with the main control box 150, a first screw rod 440 connected with the output shaft of the first driving unit 430, and a first connecting ring 450 screwed on the first screw rod 440, the first connecting ring 450 being rotatably connected with the support frame 200. The first bearing seat 410 preferably adopts a type UCP205 bearing with an outer spherical surface to ensure the stability and low friction of the rotation of the mounting plate 420. The first driving unit 430 is a first speed reducer motor, which is preferably a type JGP-60ST-M01330 planetary gear speed reducer motor, with a speed reduction ratio of 1:30 and a rated torque of 1.3 N·m, capable of providing sufficient driving torque. The first screw rod 440 is drivingly connected with the output shaft of the first speed reducer motor through a shaft coupling, and a servo driver of a type ASDA-B2 series is used to receive the pulse signals sent by the solar tracking controller 311 to control the forward and reverse rotation of the first speed reducer motor, drive the rotation of the first screw rod 440, and further drive the first connecting ring 450 to move along the axis of the first screw rod 440, thereby achieving the adjustment of the pitch angle of the support frame 200. The stable driving, precise adjustment and efficient adaptation of the pitch angle of the support frame 200 provide reliable mechanical support for the maximum absorption of light energy by the photovoltaic panel 320.

[0033] The outer side of the first screw rod 440 is provided with a corrugated pipe protective cover (not shown in the figure), one end of the protective cover is adsorbed and connected with the mounting plate 420 through a magnetic ring, the other end is magnetically connected with the first connecting ring 450, and the material of the protective cover is polyvinyl chloride with a thickness of not less than 0.3 mm. The corrugated pipe solves the problem of corrosion and damage of the first screw rod 440 in outdoor environment, and the magnetic connection balances the persistence of protection and the flexibility of adjustment, thereby significantly improving the service life and transmission reliability of the screw rod without affecting the adjustment of the pitch angle of the first angle adjusting mechanism 400.

[0034] The outer peripheral wall of the first connecting ring 450 is provided with a double lug joint 451, the support frame 200 is provided with a first rod body 211, the first rod body 211 is provided with a single lug joint 2110, the double lug joint 451 and the single lug joint 2110 are rotatably connected through a pin shaft, and the both ends of the pin shaft are provided with anti-falling clamping springs. The clamping structure of the double lug and the single lug ensures uniform force transmission, the combination of the pin shaft and the clamping spring realizes reliable connection and anti-falling, and the whole adapts to the high frequency and variable load working characteristics of the first angle adjusting mechanism 400, thereby finally providing stable, flexible and safe connection guarantee for the pitch angle adjustment of the support frame 200.

[0035] Please continue to refer to Figure 2The support frame 200 is in the shape of a right-angled trapezoid, and its structure includes a first right-angled side 210, a second right-angled side 220, and a slanted side connecting the non-right-angled ends of the two right-angled sides. The slanted side between the two right-angled sides forms an inclined support surface, and the slanting angle of the inclined support surface is set to be 30°-60° to adapt to the solar altitude angle in different latitudes. The first right-angled side 210 is rotationally connected to the base frame, and the mounting frame 310 is rotationally connected to the inclined support surface of the slanted side. The horizontal support frame 120 is hingedly connected with a connecting rod 121, and the connecting rod 121 is connected with the first right-angled side 210. The slanted surface of the right-angled trapezoid can directly match the initial installation angle of the photovoltaic panel 320, and no additional angle conversion component is needed. The mounting frame 310 is rotationally connected to the inclined surface, which not only provides a basic inclination reference for the photovoltaic panel 320 (reducing the initial adjustment amount of the second angle adjustment mechanism 500), but also reserves an azimuth angle adjustment space (such as rotating horizontally along the inclined surface to track the sun's azimuth).

[0036] The slanted side of the support frame 200 is in an open structure, and the photovoltaic mechanism 300 is installed at the open position. The top end of each of the two second right-angled sides 220 is fixedly connected with a second rod body 221, and each second rod body 221 is provided with a third bearing seat 221A. The mounting frame 310 is provided with a rotating shaft connected with the third bearing seat 221A, and the mounting frame 310 is rotationally installed between the two third bearing seats 221A through the rotating shaft, so that the mounting frame 310 can rotate around the rotating shaft. The third bearing seat 221A is preferably a linear bearing seat with a model number of SBR12, and the rotating shaft has a diameter of 12 mm and a surface treated by quenching to improve wear resistance and strength. The mounting frame 310 is rotationally connected with the third bearing seat 221A through the two rotating shafts to form a rotating pair, which ensures that the mounting frame 310 is stable and reliable during angle adjustment and rotates smoothly without jamming.

[0037] Please refer to Figure 4The second angle adjusting mechanism 500 comprises a second bearing seat 550 mounted on the support frame 200, a second screw rod 520 mounted at one end in the second bearing seat 550, a second driving unit 510 arranged on the support frame 200 and connected with the other end of the second screw rod 520, a second connecting ring 530 screwed on the second screw rod 520, and a connecting rod 540 connected with the second connecting ring 530. One end of the connecting rod 540 is rotationally connected with the second connecting ring 530, and the other end is rotationally connected with the photovoltaic panel 320. The second bearing seat 550 is a linear motion bearing with a model of LMK12UU, which realizes high-precision linear motion in cooperation with the second screw rod 520. The second driving unit 510 is a second speed reducer motor, which is a gear speed reducer motor with a model of 6IK25GN-CF, a rated power of 25W, and a rotating speed adjustable range of 50-1400r / min. The second screw rod 520 is a ball screw rod with a lead of 4mm. The second speed reducer motor is directly connected with the second screw rod 520 through a shaft coupling. According to the instruction of the solar tracking controller 311, the servo driver controls the rotation of the second speed reducer motor, drives the rotation of the second screw rod 520, moves the second connecting ring 530 along the second screw rod 520, pushes the mounting frame 310 to rotate around the rotating shaft in the third bearing seat 221A through the connecting rod 540, and realizes the angle adjustment of the photovoltaic panel 320.

[0038] The installation support: 1. Double-stage angle adjustment, significantly improves the light energy utilization efficiency and optimizes the power generation performance. The first angle adjusting mechanism 400 can adjust the pitch angle of the support frame 200 according to the seasonal change of the solar altitude angle (high in summer and low in winter), and the second angle adjusting mechanism 500 cooperates with the solar tracking controller 311 to respond to the change of the solar azimuth angle (from east to west) in real time. Through the dynamic adjustment of the "pitch angle + azimuth angle" in two dimensions, the photovoltaic panel 320 always maintains the best included angle (close to perpendicular) with the incident direction of sunlight, which greatly improves the light energy receiving efficiency compared with the traditional fixed support. 2. The base frame adopts a double-L-shaped support 110 arranged symmetrically, cooperates with the inclined frame 140 to form a right triangle stable structure, has strong bending moment and lateral force (wind and vibration) resistance, can uniformly disperse the load above (photovoltaic panel 320, angle adjusting mechanism, etc.), and avoids the inclination or collapse caused by single-point force. 3. The inclined support surface (30°-60°) of the right trapezoidal support frame 200 directly matches the initial installation angle of the photovoltaic panel 320, reduces the initial adjustment amount of the second angle adjusting mechanism 500, reduces the energy consumption, provides a stable reference for the azimuth angle adjustment, and further guarantees the continuity of light energy absorption. 4. The adjusting assembly 600 realizes the fine adjustment of the height of the base frame through the two independent adjusting screw rods 610 on both sides, can adapt to different slope scenarios such as inclined roof and irregular roof, does not need customized production, reduces the processing cost, ensures the horizontal installation of the base frame, and guarantees the overall stability.

[0039] The above merely illustrates the embodiments of the present application, and does not limit the patent scope of the present application, and any equivalent structure made according to the content of the present application specification and drawings, directly or indirectly applied in other related technical fields, are also within the patent protection scope of the present application.

Claims

1. An angle adjustable roof photovoltaic mounting bracket, characterized in that, The utility model provides a photovoltaic module, which comprises a base, a support frame rotatably connected to the base, a first angle adjusting mechanism electrically connected to the base and used for adjusting the pitch angle of the support frame, and a photovoltaic mechanism rotatably connected to the support frame. The first angle adjusting mechanism comprises two first bearing seats spaced apart from each other and connected to the base, a mounting plate rotatably mounted between the two first bearing seats, a first driving unit mounted at the lower end of the mounting plate and electrically connected to the base, a first screw connected to the output shaft of the first driving unit, and a first connecting ring screwed on the first screw and rotatably connected to the support frame. The outer peripheral wall of the first connecting ring is provided with a double lug joint, and the support frame is correspondingly provided with a single lug joint, the double lug joint and the single lug joint are rotatably connected through a pin shaft, and the both ends of the pin shaft are provided with anti-dropping clamps. The second angle adjusting mechanism comprises a second bearing seat mounted on the support frame, a second screw mounted in the second bearing seat, a second driving unit mounted on the support frame and connected to the other end of the second screw, a second connecting ring screwed on the second screw, and a connecting rod connected to the second connecting ring, one end of the connecting rod is rotatably connected to the second connecting ring, and the other end is rotatably connected to the photovoltaic panel.

2. The adjustable angle roof photovoltaic mounting bracket of claim 1, wherein: The support frame is in the shape of a right-angled trapezoid, and the structure comprises a first right angle side, a second right angle side, and an inclined side connecting the non-right angle ends of the two right angle sides, the inclined side between the two right angle sides forms an inclined support surface, the first right angle side is rotatably connected to the base, and the mounting frame is rotatably connected to the inclined support surface of the inclined side.

3. The adjustable angle roof photovoltaic mounting bracket of claim 2, wherein: Both sides of the support frame are respectively provided with a third bearing seat, and the mounting frame is provided with a rotating shaft connected to the third bearing seat, the mounting frame is rotatably mounted between the two third bearing seats through the rotating shaft, so that the mounting frame can rotate around the rotating shaft.

4. The adjustable angle roof photovoltaic mounting bracket of claim 1, wherein: The base further comprises an adjusting mechanism arranged on the base, and the adjusting mechanism is used for adapting the base to different roof slopes.

5. The adjustable angle roof photovoltaic mounting bracket of claim 4, wherein: The base comprises two spaced-apart L-shaped supports, a horizontal support fixedly connected to the upper ends of the two L-shaped supports, a back plate detachably connected to the vertical parts of the two L-shaped supports, and an inclined frame obliquely arranged on the two L-shaped supports, one end of the inclined frame is fixedly connected to the vertical part of the L-shaped support, and the other end is fixedly connected to the horizontal part of the L-shaped support.

6. The adjustable angle roof photovoltaic mounting bracket of claim 5, wherein: ​ 7. The angle adjustable roof PV mounting bracket of any of claims 1-6, wherein: ​ 8. The adjustable angle roof photovoltaic mounting bracket of claim 7, wherein: ​ 9. The adjustable angle roof photovoltaic mounting bracket of claim 8, wherein: The adjusting mechanism comprises two adjusting assemblies respectively and one-on-one connected on the horizontal part of the L-shaped support, each adjusting assembly comprises an adjusting screw hole opened on the horizontal part, an adjusting screw rod screwed with the adjusting screw hole, a U-shaped supporting leg rotatably connected with the bottom of the adjusting screw rod, and a rotating handle detachably connected with the top of the adjusting screw rod.

10. The adjustable angle roof photovoltaic mounting bracket of claim 9, wherein: The bottom surface of each U-shaped supporting leg is connected with a buffer assembly, the buffer assembly comprises a ring-shaped guide seat with one end connected with the bottom surface of the U-shaped supporting leg, a compression spring sleeved in the ring-shaped guide seat, and a silica gel pad connected with the bottom end of the compression spring.

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