Single-column screw pile support for solar photovoltaic module

Abstract

This invention discloses a single-column helical pile support for solar photovoltaic modules, comprising a hollow helical pile, a biomimetic tree root helical anchoring component installed on the outer surface of the hollow helical pile, a root anchoring component installed inside the hollow helical pile, and a visual indicator component installed inside the hollow helical pile. This invention achieves low-resistance cutting during the screwing process and three-dimensional support during the anchoring stage through the cooperation of forward and reverse arranged blades one and two with the root anchoring component. Through the opposing extrusion force generated by blades one and two, and the synergistic effect of the anchoring rod, U-shaped plate, reverse teeth, unfolding plate, unfolding rod, fixing block and support spring, an adaptive self-locking anchoring mechanism for deep soil is achieved, avoiding the risk of the hollow helical pile coming out or slipping when subjected to upward pull force. Thus, the soil's own extrusion force is used to enhance the anchoring effect, ensuring that the photovoltaic support can maintain a stable deep grip even in extreme climatic environments.

Description

Technical Field

[0001] This invention relates to the field of photovoltaic power generation support technology, and more specifically, to a single-column helical pile support for solar photovoltaic modules. Background Technology

[0002] A single-column helical pile bracket for solar photovoltaic modules is a support structure based on helical piles and with a single column as the main support. It is used for ground installation and fixing of photovoltaic modules. The single-column helical pile bracket uses helical blades as the load-bearing core and is directly anchored to the deep soil layer underground by mechanical screwing. It relies on the interlocking force between the blades and the soil to resist the upward force generated by the gravity load and wind load of the photovoltaic array.

[0003] When using existing single-column helical pile supports for solar photovoltaic modules, it is usually necessary to use an excavator or a special pile driver equipped with a hydraulic drive head to force the helical pile into the ground like tightening a screw. After the pile is screwed into place, the photovoltaic column is locked to the flange on the top of the pile with high-strength bolts. Then, the solar photovoltaic modules are installed, thereby constructing a stable photovoltaic array support system and ensuring that the photovoltaic modules can be firmly fixed in the design position at the optimal tilt angle.

[0004] In practical applications, existing technologies are prone to loosening or horizontal displacement due to complex working conditions such as strong winds, frost heave, and soft soil, which can affect the overall stability of the photovoltaic support. Therefore, it is necessary to provide a single-column helical pile support for solar photovoltaic modules to address the above-mentioned technical problems. Summary of the Invention

[0005] The purpose of this invention is to provide a single-column helical pile support for solar photovoltaic modules to solve the above-mentioned problems.

[0006] To achieve the above objectives, an embodiment of the present invention provides the following technical solution:

[0007] A single-column helical pile support for solar photovoltaic modules includes a hollow helical pile, a ground surface, a biomimetic tree root helical anchoring component, a root anchoring component, and a visual indicator component. The hollow helical pile is inserted into the ground surface, and its outer surface is provided with the biomimetic tree root helical anchoring component. The root anchoring component is installed inside the hollow helical pile, and the visual indicator component is installed inside the hollow helical pile.

[0008] The biomimetic tree root spiral anchoring component includes multiple steel strips arranged in a ring on the outer surface of the hollow spiral pile. The hollow spiral pile and the outer surface of the steel strips are fixedly connected with forward-arranged blade one and reverse-arranged blade two. Through the cooperation of the steel strips, blade one and blade two, the multi-directional gripping form of plant roots is simulated. Blade one provides the main penetration force and vertical bearing capacity when the hollow spiral pile is screwed in, while blade two effectively inhibits soil rebound and enhances pull-out and torsional resistance. The two work together to form a bidirectional interlocking effect, which greatly improves the anchoring stability and load transfer efficiency of the hollow spiral pile in complex soil layers.

[0009] The root anchoring assembly includes multiple U-shaped plates arranged in a ring array along the axial direction of the hollow helical pile and fixedly installed. An unfolding rod is slidably connected inside each U-shaped plate. One end of the unfolding rod is slidably connected to a fixing block fixedly connected to the outer surface of the hollow helical pile. Multiple anchoring rods are fixedly connected to the side of the fixing block. The visual indicator assembly includes an indicator hole formed in the top wall of the hollow helical pile's inner cavity. An indicator rod is slidably connected inside the indicator hole. One end of the indicator rod is fixedly connected to an indicator block. When the biomimetic tree root helical anchoring assembly unfolds, the indicator rod moves synchronously with the transmission component, moving the indicator block from its initial position to its exposed position, allowing construction personnel to quickly determine whether the anchoring is in place without excavation or the aid of instruments.

[0010] As a further improvement of the present invention, a fixing plate is fixedly connected to the inner cavity sidewall of the hollow helical pile, and a ball screw is rotatably connected inside the hollow helical pile. The fixing plate provides stable support for the ball screw and the slide bar, ensuring that the sleeve always runs along the predetermined trajectory during axial movement, avoiding transmission jamming or failure due to force deviation. This support structure accurately converts rotational motion into linear thrust, providing a reliable power foundation for the subsequent linkage deployment of the biomimetic tree root helical anchoring assembly, while significantly reducing mechanical wear.

[0011] As a further improvement of the present invention, one end of the ball screw is connected to the upper surface of the fixed plate through a bearing seat, and a sleeve is threadedly connected to the outer surface of the ball screw. The other end of the ball screw is rotatably inserted into the outer surface of the hollow helical pile and a rotating plate is installed thereon. The bearing seat realizes a low-friction rotational connection between the ball screw and the fixed plate. The sleeve converts the rotational motion of the ball screw into axial displacement through threaded engagement. The rotating plate provides the operator with a manually driven force application end, which facilitates precise control of the anchoring action.

[0012] As a further improvement of the present invention, a sliding rod is fixedly connected between the inner cavity top wall of the hollow helical pile and the fixing plate. The inside of the sleeve is slidably connected to the outer surface of the sliding rod. The outer surface of the indicator block is connected to the outer surface of the sleeve. The sliding rod provides guiding constraint for the axial movement of the sleeve, preventing it from rotating circumferentially under the drive of the ball screw, and ensuring that the indicator block can be synchronously and stably displaced with the sleeve, providing a reliable structural foundation for ground visualization monitoring of the anchoring status.

[0013] As a further improvement of the present invention, an installation sleeve is fixedly connected to the top of the hollow helical pile, a connecting plate is installed on the outer surface of the installation sleeve, a photovoltaic bracket is installed inside the connecting plate, and a photovoltaic panel is installed on the outer surface of the photovoltaic bracket. The installation sleeve serves as the connection hub between the hollow helical pile and the upper structure, and the load of the photovoltaic bracket is transferred to the hollow helical pile through the connecting plate, ensuring the stability of the overall structure and the rationality of load distribution. The photovoltaic panel is fixed at the designed tilt angle with the help of the photovoltaic bracket, which not only realizes the efficient conversion of solar energy resources, but also enhances the wind and earthquake resistance of the device in complex environments through rigid connection.

[0014] As a further improvement of the present invention, the anchor rod is triangular and sawtooth-shaped, and the left and right sides of the fixing block are hinged with linkage plates. The outer surface of the hollow helical pile is arranged in a ring along the axial direction and multiple support plates are fixedly installed. Through the triangular and sawtooth-shaped anchor rod and the hinged linkage plates, the anchor rod penetrates the soil outward under the push of the conical block to form a strong anchor. The linkage plate simultaneously converts the axial thrust into the lateral tension, driving the load-bearing wing plate to unfold in linkage, realizing the integrated action of anchoring and support, which significantly improves the construction efficiency and the collaborative working performance of the device.

[0015] As a further improvement of the present invention, a load-bearing wing plate is connected between every two spaced support plates via a bearing. An inclined groove is installed on both the left and right sides of the load-bearing wing plate, and a slider is slidably connected inside the inclined groove. The linkage plate is hinged to the outer surface of the slider. The support plate provides a rotation fulcrum for the load-bearing wing plate. The bearing connection ensures that the wing plate can rotate flexibly. The sliding cooperation between the inclined groove and the slider converts the axial tension of the linkage plate into the rotational torque of the wing plate, driving it to form a horizontal support surface and improving the stability of the load-bearing wing plate.

[0016] As a further improvement of the present invention, the bearing wing plate is provided with multiple interlocking holes inside, and the outer surface of the anchor rod is fixedly connected with multiple reverse teeth. Both the bearing wing plate and the anchor rod are made of chromium-molybdenum steel. The interlocking holes allow the soil to pass through the bearing wing plate to form soil pins to enhance the bonding force. The anchor rod and the bearing wing plate form a one-way lock after being inserted into the soil by the high-hardness reverse teeth, which together improve the pull-out resistance and shear resistance of the hollow helical pile 1.

[0017] As a further improvement of the present invention, a connecting rod is fixedly connected to the bottom of the sleeve, a conical block is installed inside the connecting rod, and a support spring is sleeved and connected to the outer surface of the unfolding rod. The downward power of the sleeve is transmitted to the conical block through the connecting rod. The conical block pushes the unfolding rod to unfold radially through the conical surface structure. The support spring stores elastic potential energy during the stretching, providing a basis for the retraction force for the self-locking anchoring of the anchoring rod.

[0018] As a further improvement of the present invention, one end of the support spring is connected to the outer surface of the U-shaped plate, and the other end is connected to the outer surface of the unfolding plate. When the unfolding rod is driven outward by the conical block, it is stretched synchronously and stores elastic potential energy, thereby providing a continuous radial retraction force for the anchoring rod, so that its reverse teeth can tightly fit into the soil to form a self-locking anchor. When the hollow helical pile is subjected to upward pulling force, the adaptive locking effect of tightening as it is pulled is achieved through the synergistic effect of the support spring retraction and the soil extrusion force.

[0019] Compared with the prior art, the advantages of this invention are:

[0020] (1) This scheme achieves low-resistance cutting and three-dimensional support during the screwing process and anchoring stage through the cooperation of blade one and blade two arranged in opposite directions and the root anchoring components. Through the opposing extrusion force generated by blade one and blade two, a high-density soil reinforcement zone is formed around the hollow helical pile, avoiding the loosening or horizontal displacement defects caused by soil interlocking failure in soft soil or strong wind conditions of traditional helical piles. This greatly improves the overall stability and overturning resistance of the pile foundation under complex geological conditions, and significantly enhances the frictional resistance of the pile-soil interface.

[0021] (2) Through the precise cooperation of the rotating plate, ball screw, slide bar and sleeve, the top manual rotation torque is converted into the axial thrust of the internal components, ensuring that the driving process is smooth and without jamming. This allows the operator to trigger the deep anchoring mechanism with just a simple rotation action, greatly reducing the construction difficulty and labor cost, and providing a stable and reliable power input foundation for the synchronous deployment of the root anchoring components and the real-time feedback of the visual indicator components.

[0022] (3) Through the synergistic effect of anchor rod, U-shaped plate, inverted tooth, unfolding plate, unfolding rod, fixing block and support spring, the self-adaptive self-locking anchoring mechanism of deep soil is realized, avoiding the risk of hollow helical piles coming out or slipping when subjected to upward pulling force, thereby using the soil's own squeezing force to enhance the anchoring effect and ensure that the photovoltaic support can still maintain a stable deep grip force in extreme climate environments.

[0023] (4) Through the cooperation of the linkage plate, the interlocking hole, the slider and the inclined groove, the mechanical action of converting the axial tension into the turning moment of the bearing wing plate is realized. The wedge effect generated by the slider sliding along the inclined groove forces the bearing wing plate to turn outward and squeeze the surrounding soil. The interlocking hole allows the soil to pass through and form the soil pin effect, avoiding the problem of insufficient shear resistance due to the anchoring method relying only on the single vertical friction force. Thus, a three-dimensional support system of outer claw and inner wing is constructed, which effectively disperses and resists horizontal shear force and vertical settlement load.

[0024] (5) By synchronously displacing the indicator block, indicator rod and sleeve in the visual indicator component, the ground visualization feedback of the anchoring status is realized, avoiding the defects of incomplete installation or blind operation caused by the construction personnel not being able to confirm whether the underground components are fully deployed. Thus, the signal disappearance locks in a way that ensures that each pile foundation reaches the design requirements of anchoring depth and strength. At the same time, there is no need to rely on large hydraulic equipment for secondary anchoring. Deep locking can be completed by manual operation only. It is particularly suitable for photovoltaic construction environments with limited terrain or power shortage. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0026] Figure 2 This is a cross-sectional view of the helical pile of the present invention;

[0027] Figure 3 This is a cross-sectional view of the overall structure of the present invention;

[0028] Figure 4 For the present invention Figure 3 Enlarged view of the structure at point A in the middle;

[0029] Figure 5 For the present invention Figure 3 Enlarged view of the structure at point B;

[0030] Figure 6 This is a partial cross-sectional view of the root anchoring component of the present invention in its undeployed state;

[0031] Figure 7 For the present invention Figure 6 Enlarged view of the structure at point C;

[0032] Figure 8 This is a partial structural cross-sectional view of the helical pile of the present invention;

[0033] Figure 9 For the present invention Figure 8 Enlarged view of the structure at point D;

[0034] Figure 10 This is a partial structural cross-sectional view of the biomimetic tree root spiral anchoring component of the present invention.

[0035] Explanation of the labels in the diagram:

[0036] 1. Hollow helical pile; 101. Ground; 102. Photovoltaic panel; 103. Photovoltaic bracket; 104. Connecting plate; 2. Bionic tree root helical anchoring assembly; 201. Blade one; 202. Blade two; 203. Steel strip; 204. Ball screw; 205. Rotating plate; 206. Mounting sleeve; 207. Sleeve; 208. Sliding rod; 3. Root group anchoring assembly; 301. Connecting rod; 302. Inverted 303. Tooth; 304. Fixing plate; 305. Anchor rod; 306. Conical block; 307. Unfolding plate; 308. Linkage plate; 309. Support spring; 310. Unfolding rod; 311. Fixing block; 312. Load-bearing wing plate; 313. Inclined groove; 314. Slider; 315. Engaging hole; 4. U-shaped plate; 4. Visual indicator assembly; 401. Indicator rod; 402. Indicator hole; 403. Indicator block. Detailed Implementation

[0037] The technical solution of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0038] Example 1:

[0039] Please see Figure 1 - Figure 10 A single-column helical pile support for solar photovoltaic modules includes a hollow helical pile 1 and a ground 101. The hollow helical pile 1 is made of low alloy structural steel and its surface is hot-dip galvanized to adapt to harsh outdoor environments. The hollow helical pile 1 is inserted into the ground 101 and its outer surface is provided with a biomimetic tree root helical anchoring component 2.

[0040] The biomimetic tree root spiral anchoring component 2 includes multiple steel strips 203 arranged in a ring on the outer surface of the hollow spiral pile 1. The steel strips 203 ensure that the forward and reverse spiral blades 201 and 202 maintain a stable geometric structure during the screwing process. It transmits rotational torque through its own rigidity, enabling the blades 201 and 202 to efficiently cut the soil, while enhancing the bending resistance of the entire biomimetic tree root spiral anchoring component 2 and preventing deformation under complex geological conditions. The outer surfaces of the hollow spiral pile 1 and the steel strips 203 are fixedly connected to the forward-arranged blades 201 and the reverse-arranged blades 202. Both blades 201 and 202 adopt a trapezoidal structure with a wider top and narrower bottom and a gradually changing spacing. Their edges are provided with serrated barbs, which are designed to mimic the mechanical properties of tree roots gripping the soil. The soil is locked by multiple layers of blades 201 and 202, thereby providing strong pull-out resistance and frost heave resistance.

[0041] A fixing plate 303 is fixedly connected to the inner cavity sidewall of the hollow spiral pile 1. A ball screw 204 is rotatably connected inside the hollow spiral pile 1. One end of the ball screw 204 is connected to the upper surface of the fixing plate 303 through a bearing seat. A sleeve 207 is threadedly connected to the outer surface of the ball screw 204. A sliding rod 208 is fixedly connected between the inner cavity top wall of the hollow spiral pile 1 and the fixing plate 303. The inside of the sleeve 207 is slidably connected to the outer surface of the sliding rod 208. The outer surface of the indicator block 403 is connected to the sleeve 208. The outer surface of the sleeve 207 is connected, and the other end of the ball screw 204 is rotatably inserted into the outer surface of the hollow helical pile 1 and a rotating plate 205 is installed. The rotating plate 205 drives the ball screw 204 to rotate. The rotating plate 205 manually drives the ball screw 204 to rotate, which drives the sleeve 207 to move smoothly along the axial direction, thereby realizing the position adjustment of the indicator block 403 connected to the sleeve 207, thus converting the rotation operation into linear displacement and providing stable power for the root anchoring assembly 3.

[0042] The top of the hollow spiral pile 1 is fixedly connected to an installation sleeve 206. A connecting plate 104 is installed on the outer surface of the installation sleeve 206. A photovoltaic bracket 103 is installed inside the connecting plate 104. A photovoltaic panel 102 is installed on the outer surface of the photovoltaic bracket 103. The photovoltaic panel 102 is a photovoltaic module. As an existing mature photoelectric conversion element, its function is to convert solar energy into electrical energy. The photovoltaic bracket 103 securely installs the photovoltaic panel 102 on the connecting plate 104 at a specific tilt angle. The two work together to achieve efficient utilization of solar energy. Furthermore, the installation sleeve 206 provides sufficient operating space at the top of the hollow spiral pile 1, allowing the rotating plate 205 to smoothly complete the rotation action, avoiding obstruction of the operation process by external structures. The rotation power of the rotating plate 205 is transmitted through the internal transmission structure, which can synchronously drive the bionic tree root spiral anchoring component 2 and the root anchoring component 3 to complete the anchoring and unfolding action, while driving the visual indicator component 4 to realize status indication.

[0043] Furthermore, the mechanical rotation power drives the entire hollow helical pile 1 to cut into the soil. At this time, the blades 201 and 202 on the biomimetic tree root helical anchoring component 2, using their forward and reverse helical structures, continuously compress, cut, and compact the surrounding soil during the downward rotation. Simultaneously, the root anchoring component 3 is in a fully retracted and compacted state, the anchoring rod 304 is tightly attached to the pile wall, and the load-bearing wing plate 311 is folded and closed to ensure smooth entry into the soil. Once the hollow helical pile 1 has been screwed into the designed depth... Stop the mechanical rotation, and the operator begins to manually rotate the rotating plate 205 installed at the top of the hollow spiral pile 1. The rotation of the rotating plate 205 will drive the ball screw 204 to rotate. When the ball screw 204 rotates, it will drive the sleeve 207 to move downward along the slide bar 208. This movement is transmitted to multiple conical blocks 305 through the connecting rod 301. When the conical blocks 305 move downward, the conical surface structure of the conical block 305 will push the unfolding plate 306 and the unfolding rod 309, forcibly pushing them open in all directions.

[0044] Example 2:

[0045] Please see Figure 1 - Figure 10 Based on Example 1, the hollow helical pile 1 is equipped with a root anchoring assembly 3.

[0046] The root anchoring assembly 3 includes multiple U-shaped plates 315 arranged in a ring array along the axial direction of the hollow helical pile 1 and fixedly installed. An unfolding rod 309 is slidably connected inside the U-shaped plate 315. One end of the unfolding rod 309 is slidably connected to a fixing block 310 fixedly connected to the outer surface of the hollow helical pile 1. Multiple anchoring rods 304 are fixedly connected to the side of the fixing block 310. The anchoring rods 304 are triangular serrated. The inverted teeth 302 are made of high-hardness chromium-molybdenum steel. When unfolded, they can efficiently penetrate the surrounding soil like a rake, forming a strong mechanical bite. By utilizing the wear resistance and shape advantages of the material, the inverted teeth 302 effectively prevent the hollow helical pile 1 from slipping when pulled out, realizing self-locking anchoring of deep soil.

[0047] Both sides of the fixed block 310 are hinged with linkage plates 307. Multiple support plates are arranged in a ring along the axial direction and fixedly installed on the outer surface of the hollow helical pile 1. A load-bearing wing plate 311 is connected between every two spaced support plates via bearings. Inclined grooves 312 are installed on both sides of the load-bearing wing plate 311. A slider 313 is slidably connected inside the inclined groove 312. The linkage plate 307 is hinged to the outer surface of the slider 313. Multiple interlocking holes 314 are opened inside the load-bearing wing plate 311. The load-bearing wing plate 311 and the slider 313 form a connection through the inclined grooves 312 on it. The inclined plane guide transmission mechanism, when the anchor rod 304 unfolds outward, the linkage plate 307 pulls the slider 313 to slide along the inclined groove 312. Utilizing the inclined plane principle, the axial tension is converted into rotational torque, driving the load-bearing wing plate 311 to rotate outward around the hinge axis to form a horizontal load-bearing disk. This increases the contact area and effectively disperses the vertical load. Furthermore, the interlocking holes 314 on the load-bearing wing plate 311 create a soil pin effect, constructing a three-dimensional support system that resists shear and settlement. This constructs a three-dimensional support system of outer claw and inner wing, effectively dispersing and resisting horizontal shear force and vertical settlement load.

[0048] Multiple inverted teeth 302 are fixedly connected to the outer surface of the anchor rod 304. Both the load-bearing wing plate 311 and the anchor rod 304 are made of chromium-molybdenum steel. A connecting rod 301 is fixedly connected to the bottom of the sleeve 207. A conical block 305 is installed inside the connecting rod 301. A support spring 308 is sleeved and connected to the outer surface of the unfolding rod 309. One end of the support spring 308 is connected to the outer surface of the U-shaped plate 315, and the other end is connected to the outer surface of the unfolding plate 306. When the conical block 305 moves downward, it pushes the unfolding plate 306 and the unfolding rod 309 to move outward, thereby driving the anchor rod 304 to unfold. During this process, the support spring 308 is further stretched and stores energy. The recoil force of the support spring 308, combined with the soil pressure, makes the inverted teeth 302 more tightly grip the soil.

[0049] A visual indicator component 4 is installed inside the hollow helical pile 1. The visual indicator component 4 includes an indicator hole 402 opened in the top wall of the inner cavity of the hollow helical pile 1. An indicator rod 401 is slidably connected inside the indicator hole 402. An indicator block 403 is fixedly connected to one end of the indicator rod 401. The surface of the indicator rod 401 is coated with red fluorescent warning paint. As the ball screw 204 drives the mechanism to operate, the indicator block 403 moves down with the sleeve 207. When the anchor rod 304 and the load-bearing wing plate 311 are fully extended into place, the indicator rod 401 is completely hidden inside the hollow helical pile 1. The disappearance of the signal serves as a visual confirmation of the completion of the installation. This avoids the defects of incomplete installation or blind operation caused by the construction personnel not being able to confirm whether the underground components are fully extended. Thus, the method of locking when the signal disappears ensures that each pile foundation reaches the anchoring depth and strength required by the design.

[0050] Furthermore, as the unfolding rod 309 moves outward, the fixing block 310 drives the anchoring rod 304 to penetrate the surrounding soil. The inverted teeth 302 on the surface of the anchoring rod 304 form a one-way locking effect after penetration. When the hollow helical pile 1 is subjected to an upward pulling force, the soil exerts an inward squeezing force on the inverted teeth 302. Combined with the recoil force of the support spring 308, the anchoring rod 304 is pulled tighter and tighter, achieving self-locking anchoring of the deep soil. At the same time, the linkage plate 307 drives the slider 313 along the load-bearing wing plate 3 The inclined groove 312 on 11 slides, using the inclined plane guiding principle to convert the horizontal tension into rotational torque, pulling the load-bearing wing plate 311 to rotate outward around the hinge axis and form a horizontal support surface. The interlocking hole 314 on the load-bearing wing plate 311 allows the soil to pass through, further enhancing the bonding force with the soil layer and constructing a three-dimensional support system of outer claw and inner wing. This effectively disperses the upward pull, horizontal force and vertical load borne by the hollow helical pile 1, ensuring the long-term stability of the photovoltaic support 103 under complex geological conditions.

[0051] As the sleeve 207 moves downward along the axial direction, the indicator rod 401 and indicator block 403, which are fixedly connected to it, also descend synchronously. When the anchor rod 304 is fully inserted into the soil and the load-bearing wing plate 311 is rotated and unfolded to its maximum angle, that is, when the anchoring action is fully in place, the indicator block 403 just slides completely into the internal cavity of the hollow helical pile 1. The conspicuous fluorescent signal that was originally exposed at the top of the pile completely disappears from the field of vision of the ground 101, allowing the operator to accurately confirm that the anchoring action has been completed without the need for any additional tools, simply by observing the change in the signal at the top of the pile.

[0052] Working principle: During use, the operator uses mechanical equipment such as an excavator to clamp the top of the hollow helical pile 1. The mechanical rotation power drives the entire hollow helical pile 1 to cut into the soil. At this time, the blades 201 and 202 on the biomimetic tree root helical anchoring component 2 use their forward and reverse helical structures to continuously squeeze, cut and compact the surrounding soil during the downward rotation. This cooperation of forward and reverse blades not only reduces the screwing resistance, but also initially builds the foundation resistance against pull-out and overturning. At the same time, the root anchoring component 3 is in a fully retracted and compact state, the anchoring rod 304 is close to the pile wall, and the load-bearing wing plate 311 is folded and closed to ensure smooth entry into the soil. At this time, the indicator block 403 of the visual indicator component 4 is in the highest position, and its conspicuous fluorescent part is fully exposed at the top opening of the hollow helical pile 1, intuitively indicating to the construction personnel that the device has not yet entered the anchoring and locking state.

[0053] Once the hollow helical pile 1 is screwed into the designed depth, the mechanical rotation stops, and the operator begins to manually rotate the rotating plate 205 installed at the top of the hollow helical pile 1. The rotation of the rotating plate 205 drives the ball screw 204 to rotate. When the ball screw 204 rotates, it drives the sleeve 207 to move downward along the slide rod 208. When the sleeve 207 moves downward, it is transmitted to multiple conical blocks 305 through the connecting rod 301. When the conical blocks 305 move downward, the conical surface structure of the conical block 305 pushes the unfolding plate 306 and the unfolding rod 309 to force them open in all directions. During this process, the supporting spring 308 is further stretched and stores elastic potential energy.

[0054] As the unfolding rod 309 moves outward, the fixing block 310 drives the anchor rod 304 to penetrate the surrounding soil. The inverted teeth 302 on the surface of the anchor rod 304 form a one-way locking effect after penetration. When the hollow helical pile 1 is subjected to an upward pulling force, the soil exerts an inward squeezing force on the inverted teeth 302. Combined with the recoil force of the support spring 308, the anchor rod 304 is pulled tighter and tighter, achieving self-locking anchoring of deep soil. By utilizing the soil's own pressure to enhance the anchoring effect, stability can be maintained without additional power, avoiding the problem of traditional helical piles being easy to loosen and pull out under conditions such as strong winds and frost heave. This provides a reliable deep anchoring foundation for the photovoltaic support 103.

[0055] At the same time, the linkage plate 307 drives the slider 313 to slide along the inclined groove 312 on the load-bearing wing plate 311. Utilizing the inclined plane guiding principle, the horizontal tension is converted into rotational torque, pulling the load-bearing wing plate 311 to rotate outward around the hinge axis and unfold, forming a horizontal support surface. The interlocking hole 314 on the load-bearing wing plate 311 allows soil to pass through, forming a soil pin effect, further enhancing the bonding force with the soil layer and constructing a three-dimensional support system of outer claw and inner wing. This greatly improves the pile's ability to resist horizontal shear force and vertical settlement. Through the mutual cooperation between the anchor rod 304 and the load-bearing wing plate 311, a multi-directional force structure is formed, effectively dispersing the upward pull, horizontal force, and vertical load borne by the hollow helical pile 1, ensuring the long-term stability of the photovoltaic support 103 under complex geological conditions.

[0056] Furthermore, as the sleeve 207 continues to move downward along the axial direction, the indicator rod 401 and indicator block 403 fixedly connected to it also descend synchronously. When the anchor rod 304 is fully inserted into the soil and the load-bearing wing plate 311 is rotated and unfolded to its maximum angle, that is, when the anchoring action is fully in place, the indicator block 403 just slides completely into the internal cavity of the hollow helical pile 1. The conspicuous fluorescent signal that was originally exposed at the top of the pile completely disappears from the field of vision of the ground 101. This method of using the disappearance of the signal to indicate the completion of the task, using strong visual contrast, allows the operator to accurately confirm that the anchoring action has been fully completed without the need for any additional tools, simply by observing the change of the signal at the top of the pile. This avoids the defects of incomplete installation or blind operation caused by the construction personnel's inability to confirm whether the underground components have been fully unfolded. Thus, the method of locking when the signal disappears ensures that each pile foundation meets the design requirements for anchoring depth and strength.

[0057] At this point, the operator can release the rotating plate 205. The ball screw 204 maintains its current position due to its self-locking characteristic. By analogy, the construction personnel install and lock multiple hollow spiral piles 1 in sequence according to the same procedure, ensuring that all pile foundations meet the design requirements for anchoring depth and strength. Then, the connecting plate 104 is aligned with the bolt holes on the top of the mounting sleeve 206 and tightened with high-strength fixing bolts. Next, the photovoltaic bracket 103 is installed on the connecting plate 104, adjusted to the design tilt angle, and then fixed. The photovoltaic panels 102 are then laid one by one on the photovoltaic bracket 103 to complete the electrical connection and mechanical fixation. At this point, the entire device officially enters a stable anchoring working state. The biomimetic tree root spiral anchoring component 2 and the root anchoring component 3 work together to provide reliable support for the long-term stable operation of the photovoltaic panel 102, ensuring that the photovoltaic power station can efficiently and safely convert solar energy resources.

[0058] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered in all respects as exemplary and not restrictive.

[0059] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style of the specification is merely for clarity. Those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

Claims

1. A single-column helical pile support for solar photovoltaic modules, characterized in that: Includes a hollow spiral pile (1) and a ground (101). The hollow spiral pile (1) is inserted into the ground (101) and its outer surface is provided with a biomimetic tree root spiral anchoring component (2). A root anchoring component (3) is installed inside the hollow spiral pile (1). A visual indicator component (4) is installed inside the hollow spiral pile (1). The biomimetic tree root spiral anchoring component (2) includes a plurality of steel strips (203) arranged in a ring on the outer surface of the hollow spiral pile (1), and the outer surfaces of the hollow spiral pile (1) and the steel strips (203) are fixedly connected with a forward-arranged blade one (201) and a reverse-arranged blade two (202). The root anchoring assembly (3) includes multiple U-shaped plates (315) arranged in a ring array along the axial direction of the hollow helical pile (1) and fixedly installed. The U-shaped plates (315) are slidably connected to the interior of the U-shaped plates (315), and one end of the slidably connected to the outer surface of the hollow helical pile (1) is fixedly connected to a fixing block (310). The side of the fixing block (310) is fixedly connected to multiple anchoring rods (304). The visual indicator component (4) includes an indicator hole (402) opened in the top wall of the inner cavity of the hollow helical pile (1), an indicator rod (401) is slidably connected inside the indicator hole (402), and an indicator block (403) is fixedly connected to one end of the indicator rod (401).

2. The single-column helical pile support for solar photovoltaic modules according to claim 1, characterized in that: The hollow spiral pile (1) has a fixed plate (303) fixedly connected to the inner cavity side wall, and a ball screw (204) is rotatably connected inside the hollow spiral pile (1).

3. A single-column helical pile support for solar photovoltaic modules according to claim 2, characterized in that: One end of the ball screw (204) is connected to the upper surface of the fixed plate (303) through a bearing seat. A sleeve (207) is threaded onto the outer surface of the ball screw (204). The other end of the ball screw (204) is rotatably inserted into the outer surface of the hollow helical pile (1) and a rotating plate (205) is installed thereon.

4. A single-column helical pile support for solar photovoltaic modules according to claim 3, characterized in that: A sliding rod (208) is fixedly connected between the inner cavity top wall of the hollow spiral pile (1) and the fixing plate (303). The inside of the sleeve (207) is slidably connected to the outer surface of the sliding rod (208), and the outer surface of the indicator block (403) is connected to the outer surface of the sleeve (207).

5. A single-column helical pile support for solar photovoltaic modules according to claim 1, characterized in that: The top of the hollow spiral pile (1) is fixedly connected to an installation sleeve (206), and a connecting plate (104) is installed on the outer surface of the installation sleeve (206). A photovoltaic bracket (103) is installed inside the connecting plate (104), and a photovoltaic panel (102) is installed on the outer surface of the photovoltaic bracket (103).

6. A single-column helical pile support for solar photovoltaic modules according to claim 1, characterized in that: The anchor rod (304) is triangular and sawtooth-shaped. The left and right sides of the fixing block (310) are hinged with linkage plates (307). The outer surface of the hollow spiral pile (1) is arranged in an axial ring array and fixedly installed with multiple support plates.

7. A single-column helical pile support for solar photovoltaic modules according to claim 6, characterized in that: A load-bearing wing plate (311) is connected between each pair of support plates via a bearing. An inclined groove (312) is installed on both the left and right sides of the load-bearing wing plate (311). A slider (313) is slidably connected inside the inclined groove (312). The linkage plate (307) is hinged to the outer surface of the slider (313).

8. A single-column helical pile support for solar photovoltaic modules according to claim 7, characterized in that: The load-bearing wing plate (311) has multiple interlocking holes (314) inside, and the outer surface of the anchor rod (304) is fixedly connected with multiple reverse teeth (302). Both the load-bearing wing plate (311) and the anchor rod (304) are made of chromium-molybdenum steel.

9. A single-column helical pile support for solar photovoltaic modules according to claim 3, characterized in that: A connecting rod (301) is fixedly connected to the bottom of the sleeve (207), a conical block (305) is installed inside the connecting rod (301), and a support spring (308) is sleeved and connected to the outer surface of the unfolding rod (309).

10. A single-column helical pile support for solar photovoltaic modules according to claim 9, characterized in that: One end of the support spring (308) is connected to the outer surface of the U-shaped plate (315), and the other end is connected to the outer surface of the unfolding plate (306).

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