Photovoltaic support subsidence detection device

Abstract

The application relates to the technical field of photovoltaic support, and discloses a photovoltaic support subsidence detection device, which aims to solve the problem that workers cannot discover the subsidence of cement piles in time, thereby affecting the power generation of photovoltaic panels. The device is provided with a sleeve, a horizontal plate, a spring and a pressure sensor. When the corresponding cement pile subsides, the corresponding spring is partially stretched downwards, the value of the force sensed by the corresponding pressure sensor is reduced, and the sensed value is transmitted to the workers in real time. The workers can know the subsidence of the corresponding cement pile according to the change of the value of a certain sensor, and then the workers can quickly overhaul. Through the above action, the power generation of the photovoltaic panel is not affected. Through cooperation of the round steel and the sleeve, high lateral stiffness is provided, the photovoltaic panel is not affected by wind force, the horizontal plate drives the pressure sensor to be inclined, and the detection data of the pressure sensor is not easily affected.

Description

Technical Field

[0001] This application relates to the field of photovoltaic support technology, and in particular to a photovoltaic support sinking detection device. Background Technology

[0002] Photovoltaic support structures are used to fix and support photovoltaic panels (modules) in photovoltaic power generation systems. In desert areas, in order to ensure the support strength of photovoltaic panels, photovoltaic support structures include cement piles and photovoltaic panel connectors. In use, cement piles are first driven into the ground, and then the photovoltaic panel connectors are installed on the cement piles.

[0003] However, desert areas are prone to sandstorms and have loose soil. Over time, some cement piles are susceptible to sinking due to the loose soil. The sinking cement piles pull down on the corresponding photovoltaic panels (the sinking cement piles shear against the stationary cement piles, thus damaging the photovoltaic panels), causing damage to the photovoltaic panels and affecting their power generation. However, workers cannot detect the sinking cement piles in time, which requires checking them one by one, thus affecting the power generation of the photovoltaic panels. Summary of the Invention

[0004] This application proposes a photovoltaic support sinking detection device, which has the advantage of detecting sinking cement piles, and solves the problem that workers cannot detect sinking cement piles in time, which affects the power generation of photovoltaic panels.

[0005] To achieve the above objectives, this application adopts the following technical solution: a photovoltaic support sinking detection device, comprising: a photovoltaic panel, an inclined rod, a vertical rod, and cement piles. Multiple cement piles are equidistantly fixedly installed in the soil of a desert region. Each cement pile has a sleeve on its upper side. The sleeve has two cavities: an upper cavity and a lower cavity. The opening of the upper cavity faces upward, and the opening of the lower cavity faces downward. The upper end of the cement pile extends into the lower cavity of the sleeve. Fixing bolts are equidistantly fixedly installed on the outer circumference of the sleeve. The cement pile is fixedly connected to the sleeve via the fixing bolts. A vertical rod is provided on both the front and rear sides of the sleeve, and an inclined rod is provided above the two vertical rods. The inclined rods are inclined and fixedly connected to the lower surface of the photovoltaic panel. A horizontal plate is fixedly installed between the two vertical rods and above the sleeve. The lower surface of the horizontal plate abuts against the upper end face of the sleeve. A spring is fixedly installed on the lower surface of the horizontal plate and at the position corresponding to the upper cavity of the sleeve. A pressure sensor is fixedly installed at the lower end of the spring. The sensing end of the pressure sensor abuts against the bottom surface of the upper cavity of the sleeve. In the initial state, the spring is in a compressed state.

[0006] A round steel bar is slidably installed in the upper cavity of the sleeve. The lower end of the round steel bar abuts against the bottom inner wall of the upper cavity of the sleeve. The spring and pressure sensor are located inside the round steel bar. A through groove is symmetrically opened in the wall of the sleeve corresponding to the position of the upper cavity. A connecting rod is installed in the through groove. The inner end of the connecting rod is fixedly connected to the outer circumferential surface of the round steel bar. Both outer ends of the connecting rod are fixedly connected to the corresponding vertical rod.

[0007] Furthermore, the horizontal plate is a continuous high-strength aluminum alloy rigid plate structure used to connect the vertical bars on the same path.

[0008] Furthermore, the sleeve is made of stainless steel, the inner wall of the sleeve is polished and coated with a polytetrafluoroethylene self-lubricating coating, the round steel is made of aluminum alloy, the surface of the round steel is subjected to hard anodizing treatment, the horizontal plate is made of aluminum alloy, and the spring is made of stainless steel spring wire.

[0009] Furthermore, the bottom inner wall surface of the upper cavity of the sleeve is a conical surface, the sensing end of the pressure sensor is concave, the sensing end of the pressure sensor forms a sliding contact with the conical surface, the lower inner wall of the through groove is inclined, and the lower inner wall of the through groove is smoothly transitioned to the bottom wall surface of the upper cavity of the sleeve.

[0010] Furthermore, an annular plate is fitted onto the outer side of the upper end of the sleeve, the lower end of the annular plate is inclined outward, the upper end of the annular plate is fixedly connected to the lower surface of the horizontal plate, there is a gap between the inner side of the annular plate and the outer circumferential surface of the sleeve, and there is a gap between the upper end of the round steel and the lower surface of the horizontal plate.

[0011] Furthermore, both the upper and lower ends of the round steel bar are inclined inward, and a rubber pad is fixedly installed on the upper end face of the sleeve.

[0012] Furthermore, the inner wall of the sleeve is provided with annular grooves at equal intervals along the longitudinal direction, and the inner wall of the round steel is provided with through holes at equal intervals.

[0013] This application has the following beneficial effects:

[0014] This application provides a photovoltaic support sinking detection device. By setting up a sleeve, a horizontal plate, a spring and a pressure sensor, when the corresponding cement pile sinks, the corresponding spring is stretched downward, which reduces the value of the sensing force of the corresponding pressure sensor and transmits the sensing value to the staff in real time. The staff can then know the sinking phenomenon of the corresponding cement pile based on the change of a certain sensor value and quickly carry out maintenance. Through the above actions, the power generation of the photovoltaic panel is not affected.

[0015] By using a sleeve and a round steel bar, the round steel bar is slidably installed in the upper cavity of the sleeve and fixedly connected to the vertical rod. The cooperation between the round steel bar and the sleeve provides extremely strong lateral stiffness, preventing the photovoltaic panel from being affected by wind and causing the horizontal plate to tilt the pressure sensor. This makes the detection data of the pressure sensor less susceptible to influence. At the same time, when the cement pile causes the sleeve to sink, since the round steel bar is not fixedly connected to the sleeve, the force exerted by the sinking cement pile on the photovoltaic panel is small, reducing the probability of damage to the photovoltaic panel and the probability of the photovoltaic panel's power generation being affected.

[0016] By using a horizontal plate, sleeve, and round steel, the horizontal plate closes the opening of the upper cavity of the sleeve, and the round steel circumferentially surrounds the spring and pressure sensor. This prevents external sand particles from easily contacting the spring and pressure sensor, thus minimizing the impact on their sensitivity. As a result, workers can promptly detect and repair sinking cement piles.

[0017] With the round steel bar positioned such that both its upper and lower ends are inclined inwards, the inclined surfaces at both ends of the round steel bar form a converging gap with the inner wall of the sleeve. Due to the viscosity of air, when the round steel bar makes a small longitudinal reciprocating motion, it will bring air from the large opening into the small opening, allowing air to enter the gap between the round steel bar and the sleeve, and generating dynamic pressure in the gap. This pressure will push the round steel bar towards the center, forming a dynamic pressure air film with a thickness of about 0.01 mm on the contact surface between the round steel bar and the sleeve. This dynamic pressure air film separates the metal surfaces, thereby reducing the frictional loss between the two. Attached Figure Description

[0018] The accompanying drawings, which form part of this specification, illustrate embodiments disclosed in this application and, together with the specification, serve to explain the principles disclosed in this application.

[0019] This application can be more clearly understood with reference to the accompanying drawings and the following detailed description, wherein:

[0020] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0021] Figure 2 This is a schematic diagram showing the connection state between the photovoltaic panel and the cement pile of the present invention;

[0022] Figure 3 This is a schematic diagram of the cement pile top installation structure of the present invention;

[0023] Figure 4 This is a schematic diagram of the internal structure of the upper cavity of the sleeve of the present invention;

[0024] Figure 5 This is a schematic diagram of the inner structure of the round steel in this invention;

[0025] Figure 6 This is a schematic diagram showing the location of the annular groove in this invention.

[0026] In the diagram: 1. Cement pile; 2. Sleeve; 3. Fixing bolt; 4. Vertical rod; 5. Diagonal rod; 6. Photovoltaic panel; 7. Horizontal plate; 8. Spring; 9. Pressure sensor; 10. Round steel; 11. Through groove; 12. Connecting rod; 13. Annular plate; 14. Annular groove; 15. Through hole. Detailed Implementation

[0027] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.

[0028] Example 1: Please refer to Figures 1-6 A photovoltaic support sinking detection device includes cement piles 1, multiple cement piles 1 are fixedly installed at equal intervals in the soil of a desert area. A sleeve 2 is provided on the upper side of the cement pile 1. The sleeve 2 has two cavities: an upper cavity and a lower cavity. The opening of the upper cavity faces upward, and the opening of the lower cavity faces downward. The upper end of the cement pile 1 extends into the lower cavity of the sleeve 2. Fixing bolts 3 are threaded at equal intervals on the outer circumference of the sleeve 2. The cement pile 1 is fixedly connected to the sleeve 2 by the fixing bolts 3. A vertical rod 4 is provided on both the front and rear sides of the sleeve 2. A single inclined rod 5 with an inclined angle is fixedly installed above the two vertical rods 4. A photovoltaic panel 6 is fixedly installed above the inclined rod 5 by bolts. Between the two vertical rods 4... A horizontal plate 7 is fixedly installed above the sleeve 2. The lower surface of the horizontal plate 7 abuts against the upper end face of the sleeve 2. A spring 8 is fixedly installed on the lower surface of the horizontal plate 7 at the position corresponding to the upper cavity of the sleeve 2 by bolts. A pressure sensor 9 is fixedly installed at the lower end of the spring 8 (the pressure sensor 9 uses a 316L stainless steel shell and a sapphire piezoresistive sensor. The 316L stainless steel has a sealing rating of IP68, ensuring that sand and water vapor cannot enter the interior. The sapphire piezoresistive sensor has small temperature drift and strong overload resistance, making it suitable for extreme temperature environments in the desert). The sensing end of the pressure sensor 9 abuts against the bottom surface of the upper cavity of the sleeve 2. In the initial state, the spring 8 is in a compressed state.

[0029] When a cement pile 1 sinks, it will cause the sleeve 2 to move downwards synchronously, moving the sleeve 2 away from the horizontal plate 7 (the other cement piles 1 do not sink, thus supporting the photovoltaic panel 6 to remain in its current position, and keeping the horizontal plate 7 stationary). This causes the spring 8 to stretch downwards, reducing the value of the corresponding pressure sensor 9, and transmitting the sensing value signal to the staff in real time. Based on the change in the value of a pressure sensor 9, the staff can know the sinking phenomenon of the corresponding cement pile 1 and quickly carry out maintenance. Through the above actions, the power generation of the photovoltaic panel 6 is not affected (the spring 8 together support the upper structure, forming a vibration isolation system, which can isolate the vibration transmitted from the ground and attenuate the vibration of the upper structure).

[0030] Please see Figures 1-6 The horizontal plate 7 is a long, high-strength aluminum alloy rigid plate structure used to connect the vertical bars 4 on the same path.

[0031] When a cement pile 1 sinks, the rigid plate will immediately transfer the load of the cement pile 1 to the other cement piles 1, significantly reducing the stress on the sinking cement pile 1 and delaying its further sinking.

[0032] Please see Figures 1-6 A round steel bar 10 is slidably installed in the upper cavity of the sleeve 2. The lower end of the round steel bar 10 abuts against the bottom inner wall of the upper cavity of the sleeve 2. The spring 8 and the pressure sensor 9 are set inside the round steel bar 10. A through groove 11 is symmetrically opened in the wall of the sleeve 2 corresponding to the position of the upper cavity. A connecting rod 12 is set in the through groove 11. The inner end of the connecting rod 12 extends into the upper cavity and contacts the outer circumferential surface of the round steel bar 10. The outer end of the connecting rod 12 extends out of the through groove 11 and contacts the corresponding vertical rod 4. The vertical rod 4, the connecting rod 12 and the round steel bar 10 are fixedly connected into one piece by bolts.

[0033] The cooperation between the round steel 10 and the upper cavity of the sleeve 2 provides extremely strong lateral rigidity, preventing the photovoltaic panel 6 from being affected by wind. In turn, the vertical rod 4 drives the horizontal plate 7 and the pressure sensor 9 to tilt, making the detection data of the pressure sensor 9 less susceptible to influence.

[0034] Meanwhile, when the cement pile 1 drives the sleeve 2 to sink, since the round steel 10 is not fixedly connected to the sleeve 2, the force exerted by the sinking cement pile 1 on the photovoltaic panel 6 is small (only the friction between the sleeve 2 and the round steel 10 is applied to the photovoltaic panel 6), which reduces the probability of damage to the photovoltaic panel 6 and the probability of the photovoltaic panel 6's power generation being affected.

[0035] In addition, when the cement pile 1 has not sunk, since the bottom surface of the horizontal plate 7 contacts the upper end surface of the sleeve 2, and the round steel 10 is sleeved on the outside of the spring 8 and the pressure sensor 9, it is not easy for external sand particles to contact the spring 8 and the pressure sensor 9, ensuring that the sensitivity of the two is not easily affected, so that the staff can detect and repair the sunken cement pile 1 in time.

[0036] Please see Figures 1-6 Sleeve 2 is made of 304L stainless steel. The inner wall of sleeve 2 is polished and coated with a polytetrafluoroethylene self-lubricating coating. Round steel 10 is made of 6061-T6 aluminum alloy. The surface of round steel 10 is hard anodized. Horizontal plate 7 is made of 7075-T6 aluminum alloy. Spring 8 is made of 302 stainless steel spring wire.

[0037] The low carbon content of 304L stainless steel eliminates the risk of intergranular corrosion (ordinary 304 stainless steel will produce intergranular corrosion under the temperature difference between day and night in the desert, and rust spots are easy to appear after sand particles wear, resulting in a sharp increase in the coefficient of friction). In addition, by polishing the inner wall of the sleeve 2 and coating it with a polytetrafluoroethylene self-lubricating coating, the sliding friction between the sleeve 2 and the round steel 10 is reduced, which further reduces the force exerted on the photovoltaic panel 6 when the cement pile 1 sinks, and reduces the probability that the power generation of the photovoltaic panel 6 will be affected.

[0038] After hard anodizing, the surface hardness of 6061-T6 aluminum alloy can reach HV350-400, forming an excellent friction pair with the PTFE self-lubricating coating. The coefficient of friction is stable at 0.03-0.04, and no seizing will occur.

[0039] The 7075-T6 aluminum alloy has ultra-high strength (σb≥560MPa) and high elastic modulus (71GPa), which makes the horizontal plate 7 provide better support for the photovoltaic panel 6;

[0040] 302 stainless steel has excellent elastic properties, corrosion resistance far superior to carbon steel, good machinability, and allows for precise control of spring stiffness and preload.

[0041] Please see Figures 1-6 The bottom inner wall of the upper cavity of sleeve 2 is a conical surface, the sensing end of pressure sensor 9 is concave, and the sensing end of pressure sensor 9 forms a sliding contact with the conical surface. The lower inner wall of through groove 11 is set at an inclined angle, and the lower inner wall of through groove 11 is smoothly transitioned to the bottom wall of the upper cavity of sleeve 2.

[0042] A small amount of sand particles entering the sleeve 2 are blocked by the round steel 10 and accumulate near the through groove 11. Since the lower inner wall of the through groove 11 is inclined, the sand particles will be automatically discharged through the through groove 11 under the action of gravity.

[0043] When the external wind blows and causes the photovoltaic panel 6 to vibrate, the photovoltaic panel 6 drives the vertical rod 4 and the horizontal plate 7 to move longitudinally back and forth in millimeter increments. This causes the connecting rod 12 to drive the round steel 10 to move longitudinally back and forth synchronously. Since the moving round steel 10 and the fixed sleeve 2 form a piston pump (when the round steel 10 moves upward, the total volume of the round steel 10 and the sleeve 2 increases, thus drawing in outside air through the gaps in the bottom inner walls of the upper cavity of the round steel 10 and the sleeve 2; when the round steel 10 moves downward and returns to its original position, the total volume of the round steel 10 and the sleeve 2 decreases, thus expelling air through the gaps in the bottom inner walls of the upper cavity of the round steel 10 and the sleeve 2), air is continuously drawn in and expelled through the gaps in the bottom inner walls of the upper cavity of the round steel 10 and the sleeve 2. Since the bottom inner wall of the upper cavity of the sleeve 2 is a conical surface, when air is drawn in through the gaps, the sand grains are subjected to gravity and friction, thus... It is not easy to enter the inner side of the round steel 10. When the air is discharged from the above gap, the sand particles are more likely to be discharged from the through groove 11 due to the action of gravity and gas thrust. Through the above action, the sand particles are further prevented from contacting the spring 8 and the pressure sensor 9, so that the sensitivity of the two is not easily affected. This allows the staff to detect and repair the sinking cement pile 1 in time (the wind vibration drives the photovoltaic panel 6 to move back and forth slightly in the longitudinal direction, so that the corresponding pressure sensor 9 senses the force to increase and decrease synchronously. The staff observes the synchronous change of the sensing data of the pressure sensor 9, and then judges that it is not the sinking of the cement pile 1, thus avoiding repeated repairs and wasting manpower). (This application connects several independent vertical rods 4 into a whole by using the horizontal plate 7, which greatly improves the natural frequency of the system and avoids the frequency range of the dominant wind in the desert area (1-5Hz), thus fundamentally avoiding the occurrence of resonance.)

[0044] The overall synchronous vibration will not cause the cable between the photovoltaic panel 6 and the inverter to bend repeatedly, thus avoiding the problem of cable fatigue breakage in traditional brackets;

[0045] Micro-vibration can effectively shake off the floating dust on the surface of the photovoltaic panel 6, improving the power generation efficiency by 2%-5%. This is the most needed function for desert photovoltaic power stations. Traditional brackets require regular manual cleaning, while this structure can achieve passive self-cleaning.

[0046] The vibration stress of this structure is concentrated on the sliding surface of the round steel 10 and the sleeve 2, while the photovoltaic panel 6, the diagonal bar 5 and the vertical bar 4 are almost unaffected by vibration stress. The vibration stress of the traditional support is concentrated at the connection point between the purlin and the column, which is prone to fatigue fracture.

[0047] The bolt fixing connection in this application uses disc spring washers. High-frequency micro-vibration does pose a risk of bolt loosening, but this can be completely solved by the optimized disc spring washers mentioned above. Disc spring washers can provide continuous preload to compensate for minor loosening caused by vibration (all bolts mentioned above are made of 316L stainless steel bolts, which have excellent corrosion resistance and strength and do not corrode for a long time when used in desert environments. When used with disc spring washers, they can compensate for the preload attenuation caused by temperature changes and wind vibration).

[0048] Example 2: Please refer to Figures 1-6 An annular plate 13 is fitted onto the outer side of the upper end of the sleeve 2. The lower end of the annular plate 13 is inclined outward. The upper end of the annular plate 13 is fixedly connected to the lower surface of the horizontal plate 7. There is a gap between the inner side of the annular plate 13 and the outer circumference of the sleeve 2. There is a gap between the upper end of the round steel 10 and the lower surface of the horizontal plate 7.

[0049] Because there is a gap between the upper end of the round steel 10 and the lower surface of the horizontal plate 7, the air pressure resistance when the total cavity volume of the round steel 10 and the sleeve 2 changes during the micro-longitudinal reciprocating movement of the round steel 10 is small. This means that the round steel 10 only needs to overcome the friction between itself and the inner wall of the sleeve 2 when it moves longitudinally, which makes the gas thrust on the sand grains greater and promotes a better sand discharge effect.

[0050] Meanwhile, as the round steel 10 moves longitudinally back and forth, outside air flows through the gap between the round steel 10 and the inner wall of the bottom of the upper cavity of the sleeve 2, and the gap between the round steel 10 and the lower surface of the horizontal plate 7, which cools the spring 8 and the pressure sensor 9, preventing them from being damaged by heat and extending the service life of the pressure sensor 9.

[0051] In addition, by setting the annular plate 13, the gas intake is maintained while reducing the probability of sand particles being sucked in, preventing sand particles from contacting the spring 8 and pressure sensor 9, and maintaining the sensitivity of both. (When the horizontal plate 7 drives the annular plate 13 and the round steel 10 downward, the total cavity volume of the round steel 10 and the sleeve 2 decreases, and some air is ejected outward from the annular gap between the annular plate 13 and the sleeve 2. At this time, the annular gap is a diffuser for the airflow. The airflow flows downward along the diffused slope, the cross-sectional area gradually increases, and the flow velocity gradually decreases. Due to the viscosity of the airflow, the airflow at the outlet will drive the surrounding air to move together, forming a continuous, outwardly diffusing conical air curtain. The diffuser can avoid boundary layer separation and eddies generated at the outlet, making the air curtain more uniform and continuous, so that the outwardly diffusing air curtain can...) The sand grains are blown away from the sleeve 2. When the horizontal plate 7 drives the annular plate 13 and the round steel 10 to move upward, the total cavity volume of the round steel 10 and the sleeve 2 increases, causing some outside air to be sucked into the annular gap. At this time, the flow direction is completely reversed, and the annular gap becomes a converging tube for the airflow, reducing the probability of sand grains being sucked in. According to the continuity equation: Q=v×A, Q: air intake flow rate (determined by wind vibration amplitude and frequency, which remains unchanged), A: inlet cross-sectional area, v: inlet average velocity. The lower inlet area of ​​the gradually expanding lip is larger than that of the existing right-angle inlet, so the inlet average velocity is reduced by 33%-50%. The starting wind speed of desert quartz sand (i.e. the minimum wind speed that can roll sand grains from the ground) is about 0.5-1m / s. The smaller the inlet average velocity, the smaller the probability of sand grains being rolled up and sucked in.

[0052] Example 3: Please refer to Figures 1-6 Both ends of the round steel 10 are inclined inward, and a rubber pad is fixedly installed on the upper end face of the sleeve 2.

[0053] The inclined surfaces at both ends of the round steel 10 form a converging gap with the inner wall of the sleeve 2. Due to the viscosity of air, when the round steel 10 makes a small longitudinal reciprocating motion, it will bring air from the large opening into the small opening, allowing air to enter the gap between the round steel 10 and the sleeve 2, and generating dynamic pressure in the gap. This pressure will push the round steel 10 towards the center, forming a dynamic pressure air film with a thickness of about 0.01 mm on the contact surface between the round steel 10 and the sleeve 2. This dynamic pressure air film separates the metal surfaces, thereby reducing the frictional loss between the two (the air cushion between the round steel 10 and the sleeve 2 not only reduces friction, but also acts as a damper, which can absorb vibration energy and suppress the increase of amplitude).

[0054] Please see Figures 1-6 The inner wall of the sleeve 2 is provided with annular grooves 14 at equal intervals in the longitudinal direction, and the inner wall of the round steel 10 is provided with through holes 15 at equal intervals. The inner end of the through hole 15 is connected to the inner cavity of the round steel 10, and the outer end of the through hole 15 is opened on the outer circumferential surface of the round steel 10.

[0055] When the total volume of the cavity between the round steel 10 and the sleeve 2 decreases, some of the air in the cavity will enter the annular groove 14 through the through hole 15 and move along the annular groove 14 into the gap between the round steel 10 and the sleeve 2. When the total volume of the cavity between the round steel 10 and the sleeve 2 increases, the cavity will draw in outside air through the through hole 15, the annular groove 14 and the gap between the round steel 10 and the sleeve 2, causing outside air to flow in the gap between the round steel 10 and the sleeve 2, making it easier to form a dynamic pressure air film, thereby reducing the frictional loss between the round steel 10 and the sleeve 2.

[0056] At the same time, when the gas is discharged axially through the gap between the round steel 10 and the sleeve 2, it will blow the sand particles accumulated in the dead corner of the bottom wall of the sleeve 2, causing the sand particles to move circumferentially to the position of the through groove 11 and be discharged. Through this action, the sand particles are prevented from contacting the spring 8 and the pressure sensor 9, thus maintaining the sensitivity of both.

Claims

1. A photovoltaic support sinking detection device, comprising: A photovoltaic panel (6), a diagonal rod (5), a vertical rod (4), and a cement pile (1) are provided. Multiple cement piles (1) are fixedly installed at equal intervals in the soil of a desert region. The feature is that each cement pile (1) has a sleeve (2) on its upper side. The sleeve (2) has two cavities: an upper cavity and a lower cavity. The opening of the upper cavity faces upwards, and the opening of the lower cavity faces downwards. The upper end of the cement pile (1) extends into the lower cavity of the sleeve (2). Fixing bolts (3) are fixedly installed at equal intervals on the outer circumference of the sleeve (2). The cement pile (1) is fixedly connected to the sleeve (2) via the fixing bolts (3). A vertical rod (4) is provided on both the front and rear sides of the sleeve (2). A diagonal rod (5) is provided above each vertical rod (4). The diagonal rod (5) is inclined. The diagonal rod (5) is fixedly connected to the lower surface of the photovoltaic panel (6). A horizontal plate (7) is fixedly installed between the two vertical rods (4) and above the sleeve (2). The lower surface of the horizontal plate (7) abuts against the upper end face of the sleeve (2). A spring (8) is fixedly installed on the lower surface of the horizontal plate (7) and at the position corresponding to the upper cavity of the sleeve (2). A pressure sensor (9) is fixedly installed at the lower end of the spring (8). The sensing end of the pressure sensor (9) abuts against the bottom surface of the upper cavity of the sleeve (2). In the initial state, the spring (8) is in a compressed state. A round steel bar (10) is slidably installed in the upper cavity of the sleeve (2). The lower end of the round steel bar (10) abuts against the bottom inner wall of the upper cavity of the sleeve (2). The spring (8) and the pressure sensor (9) are arranged inside the round steel bar (10). A through groove (11) is symmetrically opened in the wall of the sleeve (2) corresponding to the position of the upper cavity. A connecting rod (12) is arranged in the through groove (11). The inner end of the connecting rod (12) is fixedly connected to the outer circumference of the round steel bar (10). The two outer ends of the connecting rod (12) are fixedly connected to the corresponding vertical rod (4).

2. The photovoltaic support sinking detection device according to claim 1, characterized in that, The horizontal plate (7) is a long, high-strength aluminum alloy rigid plate structure used to connect the vertical rods (4) on the same path.

3. The photovoltaic support sinking detection device according to claim 2, characterized in that, The sleeve (2) is made of stainless steel. The inner wall of the sleeve (2) is polished and coated with a polytetrafluoroethylene self-lubricating coating. The round steel (10) is made of aluminum alloy. The surface of the round steel (10) is subjected to hard anodizing treatment. The horizontal plate (7) is made of aluminum alloy. The spring (8) is made of stainless steel spring wire.

4. The photovoltaic support sinking detection device according to claim 2, characterized in that, The bottom inner wall of the upper cavity of the sleeve (2) is a conical surface, the sensing end of the pressure sensor (9) is concave, the sensing end of the pressure sensor (9) forms a sliding contact with the conical surface, the lower inner wall of the through groove (11) is set at an inclined angle, and the lower inner wall of the through groove (11) and the bottom wall of the upper cavity of the sleeve (2) are smoothly transitioned.

5. The photovoltaic support sinking detection device according to claim 4, characterized in that, An annular plate (13) is fitted onto the outer side of the upper end of the sleeve (2). The lower end of the annular plate (13) is inclined outward. The upper end of the annular plate (13) is fixedly connected to the lower surface of the horizontal plate (7). There is a gap between the inner side of the annular plate (13) and the outer circumference of the sleeve (2). There is a gap between the upper end of the round steel (10) and the lower surface of the horizontal plate (7).

6. The photovoltaic support sinking detection device according to claim 5, characterized in that, Both ends of the round steel (10) are inclined inward, and a rubber pad is fixedly installed on the upper end face of the sleeve (2).

7. The photovoltaic support sinking detection device according to claim 6, characterized in that, The inner wall of the sleeve (2) is provided with annular grooves (14) at equal intervals in the longitudinal direction, and the inner wall of the round steel (10) is provided with through holes (15) at equal intervals.

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