Photovoltaic pile foundation inclination angle measuring device and method suitable for cobblestone layer

Abstract

The invention relates to the technical field of photovoltaic pile foundation measurement, in particular to a photovoltaic pile foundation inclination angle measuring device and method suitable for a cobblestone layer, and the device comprises a mounting shell, two clamping pieces which are slidably connected to one side of the mounting shell and are used for clamping a photovoltaic pile foundation, and a measuring assembly which is arranged on the other side of the mounting shell and is used for measuring the inclination angle. The two-way lead screw is driven by the motor to rotate, so that the two clamping pieces slide relatively and are adjusted to a proper distance; the worm is rotated to drive the worm gear to rotate, so that the semi-ring arms are opened and closed, the device is fixed on the photovoltaic pile foundation, and the problem that the cobblestone layer measuring instrument is not easy to fix and level is avoided; the vertical line is in a vertical state under the gravity action of the plumb bob, the horizontal ring is in a horizontal state, the device is inclined, the vertical line is perpendicular to the graduated scale, the inclination angle is obtained according to a right triangle calculation rule, full-mechanical measurement is achieved, and the instrument is prevented from being interfered by electromagnetic interference.

Description

Technical Field

[0001] The present invention relates to the technical field of photovoltaic pile foundation measurement, and specifically to a photovoltaic pile foundation tilt angle measurement device and method applicable to cobblestone layers. Background Technique

[0002] Photovoltaic power generation is a technology that directly converts solar energy into electrical energy using the photovoltaic effect of semiconductor materials. The core equipment includes solar panels, controllers, and inverters. Compared with hydropower, wind power, nuclear power, etc., solar power generation has no emissions and noise, and the application technology is mature, safe and reliable. When installing photovoltaic equipment, it is necessary to first drive pile foundations into the ground to install the photovoltaic equipment. Sometimes, the photovoltaic pile foundations need to be driven into cobblestone layers. The cobblestone layers are uneven, and the underground cobblestone layers move, which will cause the pile foundations to tilt.

[0003] The authorized announcement number CN118031852A discloses a detection device for the verticality of pile foundations and the diameter of pile holes, including an installation and positioning unit arranged on the foundation. The installation and positioning unit is arranged at the port of the pile hole. A rotation unit is provided on the installation and positioning unit. A tilt adjustment unit is provided on the rotation unit. A laser distance measurement probe is provided on the tilt adjustment unit. The tilt adjustment unit is used to adjust the tilt angle of the laser distance measurement probe with respect to the horizontal plane. The rotation unit is used to drive the laser distance measurement probe to rotate along the horizontal direction. The installation and positioning unit can adjust the laser distance measurement probe to be collinear with the axis of the pile hole. This application has the effect that when detecting pile foundations, the laser distance measurement probe is not easily interfered, making the measurement results more accurate.

[0004] The current mainstream solutions generally place the instrument on the ground for tilt angle measurement. When in cobblestone layers, due to the uneven and hard texture of the cobblestone layer ground, it is difficult to fix and level the instrument, causing difficulties in measurement. Moreover, photovoltaic devices are often built in remote areas in the wild. When existing electronic inclinometers operate in areas with unstable electromagnetic fields in the wild, it is difficult to accurately measure the tilt angle under electromagnetic interference.

[0005] In view of this, we propose a photovoltaic pile foundation tilt angle measurement device and method applicable to cobblestone layers. Summary of the Invention

[0006] In order to overcome the defects in the prior art, the purpose of the present invention is to provide a photovoltaic pile foundation tilt angle measurement device and method applicable to cobblestone layers. By rotating the worm to drive the worm wheel to rotate, the semi-circular arm is fixed on the photovoltaic pile foundation, so that the device is separated from the bottom surface for measurement, avoiding the problem of difficult fixing and leveling in cobblestone layers. At the same time, the plumb bob drives the plumb line to be perpendicular to the horizontal ring to form a right triangle, obtaining the lengths of the right-angled side and the hypotenuse, and calculating the tilt angle to solve the problems raised in the above background technique.

[0007] To achieve the above object, on the one hand, the present invention provides the following technical solutions: A photovoltaic pile foundation inclination angle measuring device suitable for cobblestone layers, comprising a mounting shell, two clamping members slidably connected to one side of the mounting shell for clamping a photovoltaic pile foundation, and a measuring assembly provided on the other side of the mounting shell for measuring the inclination angle. A bidirectional lead screw and a sliding rod are rotatably connected in the mounting shell, and the clamping member is threadedly connected to the bidirectional lead screw; The clamping member includes a sliding box, two semi-circular arms, a worm rotatably connected in the sliding box, and a clamping plate provided on the semi-circular arm. One end of the semi-circular arm extends into the sliding box and is welded and fixed with a worm gear. The clamping member drives the worm gear to rotate by rotating the worm to realize the opening and closing of the two semi-circular arms, so as to clamp and fix the photovoltaic pile foundation; This setting rotates the worm, drives the two worm gears to rotate towards each other, and the two semi-circular arms open and close, so as to fix the device on the photovoltaic pile foundation through the clamping member.

[0008] The measuring assembly includes a long strip plate welded and fixed to the top end of the side of the mounting shell, a plumb line hinged to the bottom end of the long strip plate through a ball joint, a plumb bob connected to the bottom end of the plumb line, a rotating ring rotatably connected to the bottom end of the side wall of the mounting shell, a horizontal ring rotatably connected in the rotating ring, a scale ring rotatably connected to the top surface of the horizontal ring, and a scale provided on the horizontal ring. The ball joint and the center of the ring where the horizontal ring is located are on the same central axis; This setting makes the plumb line in a vertical state under the action of the gravity of the plumb bob, and the horizontal ring in a horizontal state under the action of gravity. Since the device tilts with the pile foundation, the plumb line pushes the scale to rotate to a stable state, and the plumb line is perpendicular to the scale. Knowing the length of the hypotenuse and one right side of a right triangle, the inclination angle can be calculated.

[0009] As a further improvement of this technical solution, a motor is installed on the top end of the mounting shell, the output shaft of the motor is coaxially connected to the bidirectional lead screw, convex blocks are welded and fixed on both sides of the sliding box, a first threaded hole adapted to it is opened on the convex block close to the bidirectional lead screw, and a through hole adapted to it is opened on the convex block close to the sliding rod; This setting makes the motor drive the bidirectional lead screw to rotate, so that the sliding box moves relative to the sliding rod to adjust the distance between the two clamping members, facilitating clamping it at a suitable position on the photovoltaic pile foundation.

[0010] As a further improvement of this technical solution, the worm is meshed with both of the two worm wheels, and the rotation directions of the two worm wheels are opposite. One end of the rod portion of the worm extends out of the sliding box and the installation shell and is welded and fixed with a handle. A long hole adapted to the size of the rod portion of the worm is provided on the side wall of the installation shell; This setting rotates the worm through the handle, and then drives the two worm wheels to rotate, realizing the opening and closing of the two semi-circular arms.

[0011] As a further improvement of this technical solution, a threaded rod is rotatably connected to the center of the back surface of the clamping plate. Limiting rods are welded and fixed on both sides of the back surface of the clamping plate. A second threaded hole adapted to the threaded rod is provided at the center of the arm body of the semi-circular arm; This setting rotates the threaded rod, causing the clamping plate to move towards the center of the clamping member, and further clamping and fixing the photovoltaic pile foundation.

[0012] As a further improvement of this technical solution, a hinge seat adapted to the ball hinge is provided on the bottom surface of the long strip plate. One side of the rotating ring is welded and fixed with a plug post through a connecting plate. An installation hole adapted to the plug post is provided at the bottom end of the side wall of the installation shell. A bearing is installed between the plug post and the installation hole; As a further improvement of this technical solution, hinge blocks are provided on the opposite side walls of the horizontal ring, and bearings are also provided between the hinge blocks and the rotating ring.

[0013] These two settings use bearings as lubricators for rotation, enabling the horizontal ring to automatically maintain a horizontal state under the action of gravity.

[0014] As a further improvement of this technical solution, a ring groove adapted to the scale ring is provided on the top surface of the horizontal ring. A ring block adapted to the ring groove is welded and fixed to the bottom surface of the scale ring; As a further improvement of this technical solution, a compass is installed on the top surface of the connecting plate, and azimuth scale lines are provided on the scale ring.

[0015] These two settings of the adapted ring groove and ring block enable the scale ring to rotate on the horizontal ring. According to the direction indicated by the compass, the azimuth scale lines of the scale ring can be rotated to point to the correct azimuth.

[0016] As a further improvement of this technical solution, clamping clips adapted to the horizontal ring are provided on both sides of the scale ruler, and length scale lines are provided on the top surface of the scale ruler; This setting of the clamping clip design enables the plumb line to freely push the scale ruler to rotate to point to the inclined azimuth, and obtain the offset distance when inclined, and calculate the inclination angle.

[0017] On the other hand, the present invention also provides a method for measuring the inclination angle of a photovoltaic pile foundation applicable to a cobblestone layer. Using the above-mentioned device for measuring the inclination angle of a photovoltaic pile foundation applicable to a cobblestone layer, the method includes the following steps: S1. First, start the motor to drive the bidirectional lead screw to rotate, so that the two clamping members slide towards each other and are adjusted to a suitable distance. S2. Then, rotate the worm to drive the two worm wheels to rotate, open the two semi-circular arms, move the device to the center of the two semi-circular arms where the photovoltaic pile foundation is located, rotate the worm in the reverse direction to clamp the photovoltaic pile foundation, and rotate the threaded rod to push the clamping plate against the photovoltaic pile foundation. S3. The plumb line is in a vertical state under the gravity of the plumb bob, and the horizontal ring is in a horizontal state under the gravity. Due to the inclination of the device, the plumb line pushes the scale to rotate to a stable state. S4. According to the compass direction, rotate the scale ring until the azimuth scale line matches the azimuth indicated by the compass. The position where the scale is opposite to the azimuth scale line is the inclination azimuth. S5. Calculate the inclination angle. The plumb line is perpendicular to the scale. The distance from the spherical hinge to the center of the scale is L, and the length from the center of the scale to the connection point of the scale and the plumb line is M. Knowing the hypotenuse length L of the right triangle and the length M of the right side corresponding to the inclination angle α, the inclination angle α = asin(a / c) can be calculated.

[0018] Compared with the prior art, the beneficial effects of the present invention are as follows: 1. For the device and method for measuring the inclination angle of a photovoltaic pile foundation applicable to a cobblestone layer, the motor drives the bidirectional lead screw to rotate, so that the two clamping members slide relatively and are adjusted to a suitable distance; rotating the worm drives the worm wheel to rotate, so that the semi-circular arms open and close, and the device is fixed on the photovoltaic pile foundation, avoiding the problem that it is difficult to fix the instrument on the cobblestone layer for leveling.

[0019] 2. For the device and method for measuring the inclination angle of a photovoltaic pile foundation applicable to a cobblestone layer, the plumb line is in a vertical state under the gravity of the plumb bob, and the horizontal ring is in a horizontal state under the gravity. When the device is inclined, the plumb line pushes the scale to rotate to a stable state. The plumb line is perpendicular to the scale. According to the calculation rules of a right triangle, the inclination angle is obtained. The measurement is fully mechanical, avoiding electromagnetic interference to the instrument. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The drawings described herein are for illustrative purposes only and are not intended to limit the scope of the present invention disclosure in any way. Additionally, the shapes and proportional dimensions of the components in the drawings are only schematic and are used to assist in understanding the present invention, rather than specifically defining the shapes and proportional dimensions of the components of the present invention. Those skilled in the art can, under the teaching of the present invention, select various possible shapes and proportional dimensions according to specific circumstances to implement the present invention.

[0021] Figure 1 One of the overall structural schematic diagrams of the present invention; Figure 2 Another overall structural schematic diagram of the present invention; Figure 3 Exploded view of the overall structure of the present invention; Figure 4 Cross-sectional view of the clamping member structure of the present invention; Figure 5 Exploded view of the clamping member structure of the present invention; Figure 6 Exploded view of the measurement component structure of the present invention; Figure 7 Schematic diagram of the scale structure of the present invention; Figure 8 Cross-sectional view of the scale ring structure of the present invention; The meanings of each label in the figure are as follows: 1. Installation shell; 11. Long strip hole; 12. Installation hole; 2. Clamping member; 21. Sliding box; 211. Convex block; 212. First threaded hole; 213. Through hole; 22. Half-ring arm; 221. Worm gear; 222. Second threaded hole; 23. Worm; 24. Clamping plate; 241. Threaded rod; 242. Limiting rod; 3. Bi-directional lead screw; 4. Slide bar; 5. Motor; 6. Measurement component; 61. Long strip plate; 62. Plumb line; 621. Ball hinge; 63. Plumb bob; 64. Rotating ring; 641. Insertion post; 642. Connecting plate; 65. Bearing; 66. Compass; 67. Horizontal ring; 671. Hinge block; 68. Scale ring; 681. Azimuth scale line; 682. Ring block; 69. Scale; 691. Clamp; 692. Length scale line. Specific embodiments

[0022] Combined with the accompanying drawings and the description of the specific embodiments of the present invention, the details of the present invention can be more clearly understood. However, the specific embodiments of the present invention described herein are only for the purpose of explaining the present invention and cannot be understood in any way as a limitation of the present invention. Under the teaching of the present invention, those skilled in the art can conceive any possible variations based on the present invention, and these should all be regarded as belonging to the scope of the present invention. The terms "installation" and "connection" should be understood in a broad sense, which can be directly connected or indirectly connected through an intermediate medium.

[0023] As used herein, the terms "central axis", "vertical", "horizontal", "front", "rear", "upper", "lower", "left", "right", "top", "bottom", "inner", "outer", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. These are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the indicated device or element must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present invention. In addition, in the description of the present invention, the meaning of "several" is two or more, unless otherwise specifically defined.

[0024] Please refer to Figures 1-8 as shown, the present invention provides a technical solution A photovoltaic pile foundation inclination angle measuring device applicable to cobblestone layers, comprising an installation shell 1, two clamping members 2 slidably connected to one side of the installation shell 1 for clamping the photovoltaic pile foundation, and a measuring assembly 6 arranged on the other side of the installation shell 1 for measuring the inclination angle. A bidirectional lead screw 3 and a sliding rod 4 are rotatably connected in the installation shell 1, and the clamping member 2 is threadedly connected to the bidirectional lead screw 3; Please refer to Figure 4 and Figure 5 as shown, the clamping member 2 includes a sliding box 21, two semi-circular arms 22, a worm 23 rotatably connected in the sliding box 21, and a clamping plate 24 arranged on the semi-circular arm 22. One end of the semi-circular arm 22 extends into the sliding box 21 and is welded and fixed with a worm gear 221. The clamping member 2 drives the worm gear 221 to rotate by rotating the worm 23 to realize the opening and closing of the two semi-circular arms 22, so as to clamp and fix the photovoltaic pile foundation. When the worm 23 rotates, it drives the two worm gears 221 to rotate towards each other, and the two semi-circular arms 22 open and close, so as to fix the device on the photovoltaic pile foundation through the clamping member 2; Please refer to Figure 2 、 Figure 6 and Figure 7 as shown, the measuring assembly 6 includes a long strip plate 61 welded and fixed to the top end of the side surface of the installation shell 1, a plumb line 62 hinged to the bottom end of the long strip plate 61 through a ball hinge 621, a plumb bob 63 connected to the bottom end of the plumb line 62, a rotating ring 64 rotatably connected to the bottom end of the side wall of the installation shell 1, a horizontal ring 67 rotatably connected in the rotating ring 64, a scale ring 68 rotatably connected to the top surface of the horizontal ring 67, and a scale 69 arranged on the horizontal ring 67. The ball hinge 621 and the center of the circle of the ring where the horizontal ring 67 is located are on the same central axis. The plumb line 62 is in a vertical state under the gravity of the plumb bob 63, and the horizontal ring 67 is in a horizontal state under the gravity. Since the device tilts with the pile foundation, the plumb line 62 pushes the scale 69 to rotate to a stable state. The plumb line 62 is perpendicular to the scale 69. Knowing the length of the hypotenuse and one right side of a right triangle, which is the distance from the ball hinge 621 to the center of the scale 69 and the length from the center of the scale 69 to the connection point of the scale 69 and the plumb line 62, the inclination angle can be calculated.

[0025] Specifically, please refer to Figure 4 and Figure 5 As shown, the worm 23 meshes with both worm wheels 221, and the rotation directions of the two worm wheels 221 are opposite. One end of the rod part of the worm 23 extends out of the sliding box 21 and is welded and fixed with a handle after passing through the mounting shell 1. A long slot 11 adapted to the size of the rod part of the worm 23 is provided on the side wall of the mounting shell 1. By turning the worm 23 through the handle, the two worm wheels 221 are driven to rotate, realizing the opening and closing of the two semi-circular arms 22.

[0026] Furthermore, please refer to Figure 3 and Figure 6 As shown, a hinge seat adapted to the ball hinge 621 is provided on the bottom surface of the long strip plate 61. A plug post 641 is welded and fixed to one side of the rotating ring 64 through a connecting plate 642. An installation hole 12 adapted to the plug post 641 is provided at the bottom end of the side wall of the mounting shell 1. A bearing 65 is installed between the plug post 641 and the installation hole 12. The bearing 65 serves as a lubricator for rotation, making it easier for the rotating ring 64 to rotate.

[0027] Specifically, please refer to Figure 6 As shown, hinge blocks 671 are provided on the opposite side walls of the horizontal ring 67, and bearings 65 are also provided between the hinge blocks 671 and the rotating ring 64. The bearings 65 serve as lubricators for rotation, making the horizontal ring 67 and the rotating ring 64 rotate freely.

[0028] In addition, please refer to Figure 4 and Figure 5 As shown, a threaded rod 241 is rotatably connected to the center of the back surface of the clamping plate 24. Limit rods 242 are welded and fixed to both sides of the back surface of the clamping plate 24. A second threaded hole 222 adapted to the threaded rod 241 is provided at the center of the arm body of the semi-circular arm 22. By rotating the threaded rod 241, the clamping plate 24 moves towards the center of the clamping member 2, further clamping and fixing the photovoltaic pile foundation.

[0029] Furthermore, please refer to Figure 6 and Figure 8 As shown, a ring groove adapted to the scale ring 68 is provided on the top surface of the horizontal ring 67. A ring block 682 adapted to the ring groove is welded and fixed to the bottom surface of the scale ring 68. The adapted ring groove and ring block 682 enable the scale ring 68 to rotate on the horizontal ring 67.

[0030] Specifically, please refer to Figure 6 As shown, a compass 66 is installed on the top surface of the connecting plate 642. Azimuth scale lines 681 are provided on the scale ring 68. According to the direction indicated by the compass 66, the azimuth scale lines 681 of the scale ring 68 can be rotated to point to the correct azimuth.

[0031] It should be noted that, please refer to Figure 7As shown in the figure, clamping clips 691 adapted to the horizontal ring 67 are provided on both sides of the scale 69. Length scale lines 692 are provided on the top surface of the scale 69. The design of the clamping clips 691 enables the plumb line 62 to freely push the scale 69 to rotate so as to point to the inclined direction, and obtain the offset distance during inclination to calculate the inclination angle.

[0032] Further, please refer to Figure 1 and Figure 3 As shown in the figure, a motor 5 is installed at the top end of the installation shell 1. The output shaft of the motor 5 is coaxially connected to the bidirectional lead screw 3. Convex blocks 211 are welded and fixed on both sides of the sliding box 21. A first threaded hole 212 adapted to the bidirectional lead screw 3 is provided on the convex block 211 close to the bidirectional lead screw 3, and a through hole 213 adapted to the slide bar 4 is provided on the convex block 211 close to the slide bar 4. The motor 5 drives the bidirectional lead screw 3 to rotate, so that the sliding box 21 moves relatively along the slide bar 4 to adjust the distance between the two clamping members 2, facilitating clamping it at a suitable position on the photovoltaic pile foundation.

[0033] The present invention also provides a method for measuring the inclination angle of a photovoltaic pile foundation applicable to a cobblestone layer, using the above-mentioned device for measuring the inclination angle of a photovoltaic pile foundation applicable to a cobblestone layer, including the following steps: S1. First, start the motor 5 to drive the bidirectional lead screw 3 to rotate, so that the two clamping members 2 slide towards each other and are adjusted to a suitable distance; S2. Then, rotate the worm 23 to drive the two worm wheels 221 to rotate, open the two semi-ring arms 22, move the device to the center of the two semi-ring arms 22 where the photovoltaic pile foundation is located, rotate the worm 23 in the reverse direction to clamp the photovoltaic pile foundation, and rotate the threaded rod 241 to push the clamping plate 24 to abut against the photovoltaic pile foundation; S3. The plumb line 62 is in a vertical state under the gravity of the plumb bob 63, and the horizontal ring 67 is in a horizontal state under the gravity. Due to the inclination of the device, the plumb line 62 pushes the scale 69 to rotate to a stable state; S4. According to the direction indicated by the compass 66, rotate the scale ring 68 until the azimuth scale line 681 matches the azimuth indicated by the compass 66. The position opposite the scale 69 to the azimuth scale line 681 is the inclined direction; S5. Calculate the inclination angle. The plumb line 62 is perpendicular to the scale 69. The distance L from the ball joint 621 to the center of the scale 69, and the length M from the center of the scale 69 to the connection point of the scale 69 and the plumb line 62. Knowing the hypotenuse length L of the right triangle and the length M of the right side corresponding to the inclination angle α, the inclination angle α = asin(a / c) can be calculated.

[0034] It should be noted that the above embodiments are only for illustrating the technical concept and features of the present invention, and the purpose is to enable those skilled in the art to understand the content of the present invention and implement it accordingly, and it should not be used to limit the protection scope of the present invention. Any equivalent changes or modifications made according to the spirit and essence of the present invention should be covered within the protection scope of the present invention.

Claims

1. A photovoltaic pile foundation inclination angle measuring device suitable for a cobblestone layer, comprising a mounting shell (1), two clamping members (2) slidably connected to one side of the mounting shell (1) for clamping the photovoltaic pile foundation, and a measuring component (6) arranged on the other side of the mounting shell (1) for measuring the inclination angle, characterized in that: A bidirectional screw rod (3) and a slide rod (4) are rotatably connected in the mounting shell (1), and the clamping member (2) is threadably connected to the bidirectional screw rod (3); The clamping member (2) comprises a sliding box (21), two semi-circular arms (22), a worm (23) rotatably connected to the sliding box (21), and a clamping plate (24) arranged on the semi-circular arm (22); one end of the semi-circular arm (22) extends into the sliding box (21) and is welded and fixed with a worm wheel (221); the clamping member (2) drives the worm wheel (221) to rotate by rotating the worm (23) to realize the opening and closing of the two semi-circular arms (22), so as to clamp and fix the photovoltaic pile foundation; The measuring assembly (6) comprises a long strip plate (61) welded and fixed to the top end of the side surface of the mounting shell (1), a vertical line (62) hinged to the bottom end of the long strip plate (61) through a ball joint (621), a plumb bob (63) connected to the bottom end of the vertical line (62), a rotating ring (64) rotatably connected to the bottom end of the side wall of the mounting shell (1), a horizontal ring (67) rotatably connected to the inside of the rotating ring (64), a scale ring (68) rotatably connected to the top surface of the horizontal ring (67), and a scale (69) arranged on the horizontal ring (67), wherein the center of the circle where the ball joint (621) and the horizontal ring (67) are located is on the same central axis.

2. The photovoltaic pile foundation inclination angle measuring device suitable for cobblestone layer according to claim 1 is characterized in that: A motor (5) is installed at the top of the mounting shell (1), and the output shaft of the motor (5) is coaxially connected to the bidirectional screw rod (3). Both sides of the sliding box (21) are welded and fixed with protrusions (211), and a first threaded hole (212) matching the bidirectional screw rod (3) is provided on the protrusion (211) close to the bidirectional screw rod (3), and a through hole (213) matching the bidirectional screw rod (4) is provided on the protrusion (211) close to the sliding rod (4).

3. The photovoltaic pile foundation inclination angle measuring device suitable for cobblestone layer according to claim 2 is characterized in that: The worm (23) is meshed with the two worm wheels (221), and the two worm wheels (221) rotate in opposite directions. One end of the rod of the worm (23) extends out of the sliding box (21) and is welded and fixed to the mounting shell (1). A long hole (11) matching the size of the rod of the worm (23) is formed on the side wall of the mounting shell (1).

4. The photovoltaic pile foundation inclination angle measuring device suitable for cobblestone layer according to claim 3 is characterized in that: A threaded rod (241) is rotatably connected at the center of the back side of the clamping plate (24), and limiting rods (242) are welded and fixed on both sides of the back side of the clamping plate (24). A second threaded hole (222) matching the threaded rod (241) is provided at the center of the arm body of the semi-ring arm (22).

5. The photovoltaic pile foundation inclination angle measuring device suitable for cobblestone layer according to claim 4 is characterized in that: The bottom surface of the long strip (61) is provided with a hinge seat matched with the ball joint (621); a plug post (641) is welded and fixed to one side of the rotating ring (64) via a connecting plate (642); a mounting hole (12) matched with the plug post (641) is formed at the bottom end of the side wall of the mounting shell (1); and a bearing (65) is installed between the plug post (641) and the mounting hole (12).

6. The photovoltaic pile foundation inclination angle measuring device suitable for cobblestone layer according to claim 5 is characterized in that: Hinge blocks (671) are provided on opposite side walls of the horizontal ring (67), and the bearing (65) is also provided between the hinge block (671) and the rotating ring (64).

7. The photovoltaic pile foundation inclination angle measuring device suitable for cobblestone layer according to claim 6 is characterized in that: The top surface of the horizontal ring (67) is provided with an annular groove matching the scale ring (68), and the bottom surface of the scale ring (68) is welded and fixed with an annular block (682) matching the annular groove.

8. The photovoltaic pile foundation inclination angle measuring device suitable for cobblestone layer according to claim 7 is characterized in that: A compass (66) is mounted on the top surface of the connecting plate (642), and azimuth scale lines (681) are provided on the scale ring (68).

9. The photovoltaic pile foundation inclination angle measuring device suitable for cobblestone layer according to claim 8, characterized in that: Clips (691) adapted to the horizontal ring (67) are provided on both sides of the scale (69), and length scale lines (692) are provided on the top surface of the scale (69).

10. A method for measuring the inclination angle of a photovoltaic pile foundation suitable for a pebble layer, using the inclination angle measuring device for a photovoltaic pile foundation suitable for a pebble layer according to any one of claims 1 to 9, characterized in that: The following steps are involved: S1. First, start the motor (5) to drive the bidirectional screw (3) to rotate, so that the two clamping parts (2) slide towards each other and adjust to a suitable distance; S2, then, rotating the worm (23) to drive the two worm wheels (221) to rotate, opening the two semi-ring arms (22), moving the device until the photovoltaic pile foundation is at the center of the two semi-ring arms (22), rotating the worm (23) in the opposite direction to clamp the photovoltaic pile foundation, rotating the threaded rod (241), and pushing the clamping plate (24) to abut against the photovoltaic pile foundation; S3, the vertical line (62) is in a vertical state under the gravity of the plumb bob (63), and the horizontal ring (67) is in a horizontal state under the gravity. Due to the tilt of the device, the vertical line (62) pushes the scale (69) to rotate to a stable state; S4, according to the direction of the compass (66), rotate the scale ring (68) until the azimuth scale line (681) matches the direction indicated by the compass (66), and the position where the scale (69) and the azimuth scale line (681) are opposite is the tilted azimuth; S5. Calculate the inclination angle. The vertical line (62) is perpendicular to the scale (69). The distance L from the ball joint (621) to the center of the scale (69) and the length M from the center of the scale (69) to the junction of the scale (69) and the vertical line (62) are known. The length L of the hypotenuse of the right triangle and the length M of the right angle side corresponding to the inclination angle α can be calculated as a sin (a / c).

Images