A rotating node and flexible tracking photovoltaic system

Abstract

The present invention discloses a rotating node and a flexible tracking photovoltaic system, wherein the rotating node comprises a fixed part, a rotating part, a driving part and a supporting part, wherein the fixed part is fixedly arranged on the main cable through a locking component, and the locking component is arranged one-to-one with the main cable; the rotating part and the driving part, wherein the rotating part is rotationally connected with the fixed part, the driving part is arranged on the fixed part and is transmission-connected with the rotating part, and the driving part is used to output power to drive the rotating part to rotate relative to the fixed part; and the supporting part is fixedly connected with the rotating part. The present invention uses the main cable as the assembly basis of the fixed part, and then drives the rotating part to rotate through the driving part to drive the supporting part to rotate, so that the main cable can maintain a stable tension support state, and the rotating node is arranged based on the main cable instead of the column, and the stable rotation support effect of the photovoltaic panel assembly can be achieved by adding nodes in a region with a large span.

Description

Technical Field

[0001] The present invention relates to the technical field of photovoltaic equipment, and in particular to a rotating node and a flexible tracking photovoltaic system. Background Art

[0002] In the field of photovoltaic equipment, photovoltaic tracking brackets can support, fix and rotate photovoltaic modules, and thus have better power generation efficiency by better receiving light. Currently, photovoltaic tracking brackets mostly use motors combined with rotary reducers to drive the main shaft to rotate, and drive the photovoltaic modules on the main shaft to track the sun in real time. Since the main shaft needs to rotate synchronously with the photovoltaic module, the motor needs stable basic structure support and large power output, and is mostly used to be directly set on the ground or on photovoltaic bracket structures with smaller spans. For photovoltaic module setting scenarios with complex terrain and large spans, more columns need to be set for support, and a main shaft with a larger cross-sectional size is required to achieve support and rotation. Not only is the cost high, but for some complex mountain environments, the small span structure cannot meet the bracket setting requirements, which makes it difficult for photovoltaic brackets to achieve high-efficiency power generation of photovoltaic modules.

[0003] Therefore, how to improve the adaptability of photovoltaic brackets in complex environments and meet the efficient power generation needs of photovoltaic modules is a technical problem that needs to be urgently solved by technical personnel in this field. Summary of the invention

[0004] In view of this, an object of the present invention is to provide a rotating node to improve the adaptability of the photovoltaic bracket in complex environments and meet the efficient power generation requirements of the photovoltaic components.

[0005] Another object of the present invention is to provide a flexible tracking photovoltaic system including the above-mentioned rotating node.

[0006] To achieve the above object, the present invention provides the following technical solutions:

[0007] A rotating node is arranged on a main cable of a flexible tracking photovoltaic system, comprising:

[0008] A fixing part, wherein the fixing part is fixedly arranged on the main rope through a locking component, and the locking component is arranged in a one-to-one correspondence with the main rope;

[0009] A rotating part and a driving part, wherein the rotating part is rotationally connected to the fixed part, the driving part is arranged on the fixed part and is transmission-connected to the rotating part, and the driving part is used to output power to drive the rotating part to rotate relative to the fixed part; the fixed part and the rotating part have a concentrically sleeved annular structure, and a sliding bearing is arranged in the sleeve area of ​​the fixed part and the rotating part;

[0010] The supporting part is fixedly connected to the rotating part.

[0011] Preferably, in the above-mentioned rotating node, the fixing portion includes an inner ring frame and a connecting beam, the connecting beam is arranged through the center of the inner ring frame, and the locking component cooperates with the connecting beam to form a connecting hole for the main cable to pass through.

[0012] Preferably, in the above-mentioned rotating node, the rotating part includes an outer ring frame and a supporting beam, the supporting beam is fixedly arranged on the outer wall surface of the outer ring frame and arranged parallel to the connecting beam, and the supporting part is fixedly arranged on the supporting beam.

[0013] Preferably, in the above-mentioned rotating node, the outer ring frame includes an upper shell and a lower shell of a semicircular configuration, and the splicing area of ​​the upper shell and the lower shell is raised and fixedly connected by bolts to form an integral structure.

[0014] Preferably, in the above-mentioned rotation node, the rotating part also includes a reinforcing beam, both ends of which are respectively fixed to the outer wall surface of the outer ring frame and the supporting beam, and at least two of the reinforcing beams are symmetrically arranged with respect to the outer ring frame.

[0015] Preferably, in the above-mentioned rotation node, the driving part is an electric push rod, and the electric push rod includes a base and a telescopic rod, the base is rotatably set on the connecting beam, and the action end of the telescopic rod is rotatably set on the supporting beam.

[0016] Preferably, in the above-mentioned rotation node, the base is arranged on the length direction of the connecting beam and staggered from the midpoint of the connecting beam, and the telescopic rod is also arranged on the length direction of the supporting beam and staggered from the midpoint of the supporting beam.

[0017] Preferably, in the above-mentioned rotation node, the support portion comprises at least two parallel and spaced support purlins, wherein the support purlins are parallel to the main cable and are used to support the photovoltaic panel assembly.

[0018] Preferably, in the above-mentioned rotation node, the supporting purlin is a U-shaped beam, and the opening sides of two adjacent supporting purlins are arranged to face each other.

[0019] A flexible tracking photovoltaic system comprises a main cable, a photovoltaic panel assembly and a rotating node as described in any one of the above embodiments, wherein a plurality of the rotating nodes are arranged in parallel and are respectively fixedly connected to the main cable, and the photovoltaic panel assembly is fixedly arranged on the supporting portion on the rotating node.

[0020] It can be seen from the above technical scheme that the rotating node provided by the present invention uses the fixed part as the bearing structure of other parts, and the fixed part is fixedly arranged on the main cable through the locking part, and the locking part includes a support and a U-bolt, so as to provide an arc-shaped support surface through the support, and the U-bolt is used to lock the main cable, and the circumference of the main cable is clamped by the arc structure to avoid the wear of the main cable when it contacts the plane structure, and the setting of the support can also provide a limiting effect for the main cable to reduce its shaking risk; at the same time, the fixed part is rotatably connected with the rotating part, so that in the process of adjusting the rotating node, the fixed part and the main cable keep the position fixed, and only the rotating part is used to achieve adjustment. The rotating node provided by the above structure does not need to be supported by a column structure at the bottom, and only the main cable in a good tension state can be used to achieve stable installation, and the cost is low. At the same time, in the process of rotating and adjusting the photovoltaic panel assembly through the rotating node, the main cable only serves as a supporting component and does not participate in the rotation, so that the main cable can maintain a stable tension support effect after tensioning and fixing. The driving part is used to drive the rotating part to perform a rotational action relative to the fixed part, and then realize the smooth rotation adjustment of the photovoltaic panel assembly through the supporting part fixedly connected to the rotating part. The supporting foundation of the above structure is the main cable rather than the column structure. It can be used in photovoltaic assembly settings with a larger span, and meet the photovoltaic panel assembly's demand for tracking light, realize the setting of a tracking-type flexible tracking photovoltaic system, and thus improve the power generation efficiency of the flexible tracking photovoltaic system. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0022] Figure 1 A schematic diagram of a rotating node structure provided by an embodiment of the present invention;

[0023] Figure 2 It is a schematic diagram of the assembly structure of a single rotating node, main cable and photovoltaic panel assembly;

[0024] Figure 3 It is a structural schematic diagram of a locking component;

[0025] Figure 4 It is a schematic diagram of the assembly structure of the fixed part and the rotating part;

[0026] Figure 5 A schematic structural diagram of a flexible tracking photovoltaic system provided in an embodiment of the present invention.

[0027] Among them, 10-fixed part; 110-inner ring frame; 120-connecting beam; 20-rotating part; 210-outer ring frame; 2110-upper shell; 2120-lower shell; 220-supporting beam; 230-reinforcement beam; 30-driving part; 310-electric push rod; 3110-base; 3120-telescopic rod; 40-support part; 410-support purlin; 50-locking component; 510-support; 520-U-bolt; 60-sliding bearing; 710-main cable; 720-photovoltaic panel assembly; 730-rotating node. DETAILED DESCRIPTION

[0028] The core of the present invention is to disclose a rotating node to improve the adaptability of the photovoltaic bracket in complex environments and meet the efficient power generation needs of the photovoltaic components.

[0029] Another object of the present invention is to provide a flexible tracking photovoltaic system including the above-mentioned rotating node.

[0030] In order to make the technical personnel in this field better understand the scheme of the present invention, the embodiments of the present invention are described below with reference to the accompanying drawings. In addition, the embodiments shown below do not limit the content of the invention recorded in the claims. In addition, the entire contents of the structures represented by the following embodiments are not limited to those necessary for the solutions of the invention recorded in the claims.

[0031] like Figure 1 and Figure 2 As shown, the rotating node provided in the embodiment of the present invention is arranged on the main cable 710 of the flexible tracking photovoltaic system to realize the rotation of the photovoltaic panel assembly 720 in the flexible tracking photovoltaic system based on the main cable 710, so as to meet the real-time tracking of sunlight by the photovoltaic panel assembly 720 and improve the power generation efficiency of the flexible tracking photovoltaic system.

[0032] Specifically, the rotating node mainly includes a fixed part 10, a rotating part 20, a driving part 30 and a supporting part 40, wherein the fixed part 10 is a rigid structure and is fixedly arranged on the main cable 710 through a locking part 50 to provide a basic bearing structure for other parts of the rotating node. The locking part 50 is arranged one-to-one with the main cable 710, and the one-to-one correspondence here specifically means that each main cable 710 corresponds to a locking part 50. In some embodiments, two main cables 710 are usually arranged in parallel, and they are tensioned through the columns at both ends. Correspondingly, for a single rotating node, its fixed part 10 is fixedly connected to the main cable 710 through two locking parts 50. The two-point static point fixing method can enable the fixed part 10 to maintain a stable structural setting state on the main cable 710.

[0033] In the above structure, if Figure 1 and Figure 3As shown, the locking component 50 can be a single U-shaped bolt 520, and the U-shaped bolt 520 is arranged to pass through the structural beam on the fixing portion 10 to form a connecting hole structure between the closed end of the U-shaped bolt 520 and a side wall of the structural beam. The connecting hole structure is used for the main cable 710 to pass through, and then by tightening the U-shaped bolt 520 so that the closed end of the U-shaped bolt 520 contacts the main cable 710, the main cable 710 is pressed to the side wall of the structural beam, and the nut is tightened on the U-shaped bolt 520 to achieve the fixed setting of the structural beam on the main cable 710. Furthermore, considering that the main cable 710 is in direct contact with the structural beam on the fixing portion 10, there is a greater risk of wear on the fitting surface. Therefore, in some embodiments of the present invention, the locking component 50 specifically includes a U-bolt 520 and a support 510 used in conjunction with the U-bolt 520. Specifically, the support 510 includes a groove structure formed by four legs, and the bottom structure of the groove is an arc surface. The U-bolt 520 passes through both sides of the support 510 and is fixedly connected to the structural beam on the fixing portion 10. On this basis, the main cable 710 can be placed on the support 510. The inside of the groove on the seat 510 is connected to the groove through an arc surface structure, and the closed end of the U-bolt 520 is also a curved arc surface structure. When the U-bolt 520 presses the main cable 710 to the groove position of the support 510, the main cable 710 contacts the arc surface in the circumferential direction, which can reduce the risk of wear of the main cable 710. It should be noted that the groove structure formed by the support legs of the support 510 can limit the main cable 710 after the main cable 710 is inserted, thereby preventing the main cable 710 from shaking excessively and affecting the stability of the fixing part 10.

[0034] It should be noted that the above structure simplifies the structural complexity of the rotating node while maintaining the functional effect of the rotating node. Similarly, the fixed part 10 and the single main rope 710 can also be fixed by two or more locking components 50. The two or more locking components 50 are arranged at intervals in the length direction of the main rope 710 to improve the structural stability of the fixed part 10 through multi-point connection.

[0035] On this basis, the rotating part 20 is rotationally connected with the fixed part 10. Here, the rotational connection means that the rotating part 20 can rotate relative to the fixed part 10 and the main rope 710, and its specific rotation is realized by the driving part 30. The driving part 30 is arranged on the fixed part 10 and is transmission-connected with the rotating part 20. The driving part 30 is used to output power, and it drives the rotating part 20 to generate rotational movement relative to the fixed part 10 based on the fixed part 10.

[0036] It should be noted that the driving part 30 can be fixedly arranged on the fixed part 10 so that one end of it is relatively stationary with the main rope 710. At the same time, the driving part 30 can include a swing rod. The driving part 30 drives the swing rod to swing based on a preset point through electric or hydraulic action. The action end of the swing rod is fixedly connected to the rotating part 20. The swing rod can drive the rotating part 20 to rotate relative to the fixed part 10 during the swinging process, and the clockwise and counterclockwise rotation of the rotating part 20 can be achieved by setting the swinging direction of the swing rod, so that the rotating node has the effect of driving the photovoltaic panel assembly 720 to rotate.

[0037] Similarly, the driving part 30 may also be a structure whose two ends are respectively hinged to the fixed part 10 and the rotating part 20. On this basis, the driving part 30 exerts a force on the rotating part 20 through the other end by adjusting its own length and the position fixing effect of the fixed part 10 compared to the main rope 710, thereby satisfying the clockwise and counterclockwise movement of the rotating part 20 relative to the fixed part 10 through the elongation and shortening effect.

[0038] Furthermore, the support portion 40 is provided on the rotating portion 20 as a structure directly connected to the photovoltaic panel assembly 720 in the flexible tracking photovoltaic system. It can be fixed to the rotating portion 20 as an integral structure by welding or bolting, and can follow the rotating portion 20 to perform a rotation motion relative to the fixed portion 10 under the driving action of the driving portion 30, and then when the rotating node is used in the flexible tracking photovoltaic system, it drives the photovoltaic panel assembly 720 to rotate to achieve a tracking effect on light.

[0039] The rotating node provided by the embodiment of the present invention uses the fixed part 10 as the bearing structure of other parts, and the fixed part 10 is fixedly set on the main cable 710 through the locking part 50, and the fixed part 10 is rotatably connected with the rotating part 20, so that during the adjustment of the rotating node, the fixed part 10 and the main cable 710 remain in a fixed position, and the adjustment is only achieved through the rotating part 20. The setting of the rotating node of the above structure does not require the setting of a column structure at the bottom for support, but only requires the main cable 710 in a good tension state to achieve stable installation, and can reduce the production cost of the newly added flexible tracking photovoltaic system. At the same time, in the process of rotating and adjusting the photovoltaic panel assembly 720 through the rotating node, the main cable 710 only serves as the support part 40 and does not participate in the rotation, so that the main cable 710 can maintain a stable tension support effect after tensioning and fixing. The driving part 30 is used to drive the rotating part 20 to perform a rotational movement relative to the fixed part 10, and then realize the smooth rotation adjustment of the photovoltaic panel assembly 720 through the supporting part 40 fixedly connected to the rotating part 20. The supporting basis of the above structure is the main cable 710 rather than the column structure. It can be used in photovoltaic assembly setting scenes with a larger span, and meet the photovoltaic panel assembly 720's tracking needs for light, realize the setting of a tracking-type flexible tracking photovoltaic system, and then improve the power generation efficiency of the flexible tracking photovoltaic system.

[0040] Further, in the rotation node provided by the embodiment of the present invention, the rotational cooperation between the fixed part 10 and the rotating part 20 is the basis for realizing the smooth rotation of the support part 40, and the fixed part 10 and the rotating part 20 can realize the rotational cooperation through a variety of structures. In some embodiments of the present invention, the fixed part 10 and the rotating part 20 can realize the rotational connection through the slideway cooperation, that is, the fixed part 10 and the rotating part 20 are partially stacked, the fixed part 10 is provided with a guide groove in the stacked area, and the rotating part 20 is provided with a protrusion to be inserted into the guide groove, and the guide groove is an arc structure, so that the movement process of the protrusion in the guide groove is an arc-shaped rotation process; on this basis, the driving part 30 applies a force to the rotating part 20 along the groove body direction of the guide groove, or at a non-vertical angle to the groove body direction of the guide groove, so as to realize the sliding of the protrusion in the driving part 30, thereby satisfying the rotation action of the rotating part 20 relative to the fixed part 10.

[0041] It should be noted that the above-mentioned rotational connection between the fixed part 10 and the rotating part 20 can also be achieved through structures such as slide rails or slideways, and its setting method is similar to the matching method between the guide groove and the protrusion in the above-mentioned embodiment, which will not be repeated here.

[0042] In order to improve the connection effect between the fixed part 10 and the rotating part 20 and prevent the rotating part 20 from falling off the fixed part 10 during the rotation process, in some embodiments of the present invention, the fixed part 10 and the rotating part 20 are concentrically sleeved circular ring structures, and in order to facilitate the connection between the rotating part 20 and the supporting part 40, the fixed part 10 is preferably arranged on the inner ring of the concentric ring as a basic bearing structure, and the main cable 710 passes through the inner ring of the fixed plate and is connected to the fixed part 10; the rotating part 20 is arranged on the outer ring of the concentric ring to be directly connected to the supporting part 40 and other structures at its side wall or outer wall; on this basis, a sliding bearing 60 is arranged in the sleeve area of ​​the fixed part 10 and the rotating part 20 to realize the rotation setting of the fixed part 10 and the rotating part 20. At the same time, the sliding bearing 60 is preferably made of polymer plastic material so as to be resistant to chemical corrosion in outdoor environments and have good resistance to various acids, alkalis, salts and strong oxidants. At the same time, it is lighter than metal and reduces the load-bearing burden on the main cable 710 when the rotating node is set on the main cable 710.

[0043] It should be noted that the fixed part 10 and the rotating part 20 of the concentric annular structure have a larger overlapping area and a more stable connection effect. At the same time, the fixed part 10 and the rotating part 20 are matched through the rotating bearing, so that the rotating part 20 can be in full contact with the outer wall of the fixed part 10 during the rotation process without causing the problem of rotation reading deviation or the rotating part 20 falling off. In addition, the entire structure of the rotating part 20 can rotate with the fixed part 10 as the axis, so that the support part 40 has a freer connection posture, that is, the support part 40 only needs to be fixed to any position on the rotating part 20 to meet the rotation effect of following the rotating part 20.

[0044] Based on the stable annular rotating structure realized by the sliding bearing 60, in some embodiments of the present invention, in order to improve the structural stability of the fixing part 10 and facilitate the stable installation of the main cable 710, the fixing part 10 specifically includes an inner ring frame 110 and a connecting beam 120, wherein the inner ring frame 110 is a regular circular structure, and the two ends of the connecting beam 120 are fixedly arranged at two points on the inner wall of the inner ring frame 110, so as to strengthen the structure of the inner ring frame 110 through the supporting effect of the connecting beam 120. On this basis, the locking component 50 cooperates with the connecting beam 120 to lock the main cable 710, so as to meet the fixed setting of the fixing part 10 on the main cable 710, specifically, at least two main cables 710 pass through and fit a side wall of the connecting beam 120, so as to provide two connection points for the fixing part 10 and meet the requirement of its fixed setting.

[0045] It should be noted that, in the above embodiment, it is preferred that the two main cables 710 are fixed to the same side wall of the connecting beam 120. For example, when the two main cables 710 are on the same horizontal plane compared to the ground, the connecting beam 120 is also horizontally arranged and cushioned at the bottom of the main cables 710. In addition, in order to make the connecting beam 120 satisfy the reinforcement effect of the stability of the inner ring frame 110 and enable the two main cables 710 to provide a stable support force for the connecting beam 120 and the fixing part 10, it is preferred that the connecting beam 120 passes through the center of the inner ring frame 110, that is, the connecting beam 120 is arranged along a diameter of the inner ring frame 110, and the two locking components 50 are symmetrically arranged on the connecting beam 120 about the midpoint of the connecting beam 120; the connecting beam 120 divides the inner ring frame 110 into two semicircular structures, so that the locking components 50 located on the connecting beam 120 can provide a more uniform and symmetrical support force for the fixing part 10 at two symmetrical points on the diameter structure after being fixedly connected with the main cables 710.

[0046] Further, corresponding to the fixed part 10 including the inner ring frame 110 structure, in some embodiments of the present invention, the rotating part 20 includes an outer ring frame 210 and a support beam 220, wherein the outer ring frame 210 is sleeved on the outer periphery of the inner ring frame 110 to cooperate with the inner ring frame 110 to form a cavity structure and set the sliding bearing 60, so that after the fixed part 10 is fixedly set, the rotating part 20 and the fixed part 10 can be rotated. The support beam 220 is fixedly set on the outer wall surface of the outer ring frame 210, and its position can pass through the plane of the outer ring frame 210, or be tangent to the outer wall surface of the outer ring frame 210. The support beam 220 is used to carry the support part 40 to achieve a stable setting of the support part 40. With the help of the beam structure, the support part 40 can be fixed by welding or bolting to the top surface of the support beam 220 to meet the load of the photovoltaic panel assembly 720.

[0047] It should be noted that, since the rotational movement of the outer ring frame 210 is carried out with the center of the circle of the inner ring frame 110 as the rotation center, in order to make the movement path of the rotating part 20 more regular, it is preferred that the support beam 220 and the outer ring frame 210 are arranged in the same plane, and the support beam 220 is arranged tangent to the outer wall surface of the outer ring frame 210; and further, the support beam 220 is arranged in parallel with the connecting beam 120 in the fixed part 10 in the basic state, that is, the assembly state when the rotating part 20 is not rotating. On this basis, when the two main cables 710 are arranged through the same side of the connecting beam 120, the plane formed by the two main cables 710 is also arranged parallel to the supporting beam 220. The supporting force applied by the main cables 710 to the fixed part 10 and the rotating part 20 can be perpendicular to the supporting beam 220, and the photovoltaic panel assembly 720 supported on the upper part thereof can remain parallel to the main cables 710; thereby, the supporting beam 220 maintains a stable load-bearing state and satisfies the requirement of stable support for the supporting part 40 and the photovoltaic panel assembly 720.

[0048] In order to further optimize the above technical solution, in some embodiments of the present invention, Figure 4 As shown, the outer ring frame 210 includes an upper shell 2110 and a lower shell 2120 of a semicircular configuration, so as to improve the convenience of assembly of the outer ring frame 210 and the inner ring frame 110 through the split structure of the upper shell 2110 and the lower shell 2120. At the same time, the splicing area of ​​the upper shell 2110 and the lower shell 2120 corresponds to the convex setting, and the convex structure is based on the outer wall of the outer ring frame 210 and convexly protrudes in a direction away from the center of the circle. After the convexities of the upper shell 2110 and the lower shell 2120 are connected, a through hole is opened, and they are fixedly connected by bolts to form an integrated structure. The split assembly structure of the upper shell 2110 and the lower shell 2120 can, after the sliding bearing 60 is sleeved on the outer periphery of the inner ring frame 110, set the integrated structure of the inner ring frame 110 and the sliding bearing 60 in the lower shell 2120. The semicircular structure of the lower shell 2120 can directly insert the integrated structure of the inner ring frame 110 and the sliding bearing 60. After the integrated structure of the inner ring frame 110 and the sliding bearing 60 is placed in place, the upper shell 2110 and the lower shell 2120 are docked and assembled by bolts, thereby realizing convenient assembly of the rotating part 20, the fixed part 10 and the sliding bearing 60.

[0049] It should be noted that, based on the above structure, the support beam 220 can be pre-assembled with the upper shell 2110 as an integral structure, and the setting is completed when the upper shell 2110 and the lower shell 2120 are assembled by bolts. In addition, the upper shell 2110 and the lower shell 2120 are fixed in the single-side docking area by at least two bolts arranged at intervals to improve the stability of the connection structure and avoid the risk of separation caused by the upper shell 2110 and the lower shell 2120 being subjected to the force of the sliding bearing 60 during the rotation process.

[0050] Since the support beam 220 is in direct contact with the support portion 40, its structural stability is the basis for the support portion 40 to provide effective support for the photovoltaic panel assembly 720. Therefore, in some embodiments of the present invention, the rotating portion 20 also includes a reinforcing beam 230 to provide structural reinforcement for the support beam 220 and can rotate synchronously with the support beam 220. Specifically, the two ends of the reinforcing beam 230 are respectively fixedly connected to the outer wall surface of the outer ring frame 210 and the support beam 220, which can be achieved by welding or bolting. Since the support beam 220 and the outer ring frame 210 are tangent to each other, after the reinforcing beam 230 is set, the single reinforcing beam 230 can form a closed small frame structure with the outer ring frame 210 and the support beam 220, so that the support beam 220 has stronger structural stability. It should be noted that the closed frame structure formed by the reinforcing beam 230 , the outer ring frame 210 and the supporting cross beam 220 can be increased according to the number of reinforcing beams 230 , and the reinforcing effect of the supporting cross beam 220 can be correspondingly improved.

[0051] In order to balance the production cost and reinforcement effect of the rotating node, in a specific embodiment of the present invention, two reinforcing beams 230 are provided, and the two reinforcing beams 230 are symmetrically arranged about the outer ring frame 210. It should be noted that in the present embodiment, the supporting beam 220 is also symmetrically arranged about the outer ring frame 210. The supporting beam 220 is specifically arranged tangent to the outer wall surface of the outer ring frame 210. At the same time, the supporting beam 220 is symmetrical about its tangent point on the outer ring frame 210, and the lengths of the supporting beams 220 on both sides of the tangent point are equal; and the two reinforcing beams 230 that are also symmetrically arranged about the outer ring frame 210 need to be connected to the supporting beams 220 respectively, then they need to be symmetrical about the tangent point of the supporting beam 220 on the outer ring frame 210, and the supporting beam 220 and the outer ring frame 210 can form two symmetrical and equal-area closed frame structures, so that the positions at both ends of the supporting beam 220 away from the tangent point also have a connection basis, and can achieve a stable supporting effect on the support part 40.

[0052] Further, in the rotating node provided by the embodiment of the present invention, the driving part 30 can be a power component such as a motor, a hydraulic cylinder, etc. that drives the rotating part 20 and the fixed part 10 to produce relative motion. In some embodiments of the present invention, in order to reduce the production cost of the rotating node, the driving part 30 adopts an electric push rod 310 with a low cost and a simple action process, so that the rotation process of the rotating node is stable and effective. Specifically, the electric push rod 310 specifically includes a base 3110 and a telescopic rod 3120, wherein the base 3110 is rotatably arranged on the connecting beam 120, which can be realized by a pin, a hinge or a bearing. In a specific embodiment of the present invention, the end of the base 3110 is an annular groove configuration, and a protruding shaft structure is arranged on one side of the connecting beam 120, and the annular groove of the base 3110 is sleeved on the outer periphery of the protruding shaft to realize the rotation connection between the two; here, the protruding shaft is arranged on a side wall of the connecting beam 120 parallel to the inner ring frame 110, so that the driving part 30 can deviate from the fixed part 10 and the rotating part 20, and apply a force to the rotating part 20 from one side. The telescopic rod 3120 of the electric push rod 310 includes an action end arranged away from the base 3110, and the action end is rotatably arranged on the supporting beam 220. The action end can also be rotatably arranged by the matching structure of the raised shaft and the annular groove, which will not be repeated here; the electric push rod 310 rotatably arranged at both ends can generate a component force at the action end of the telescopic rod 3120 and push the supporting beam 220 to rotate through the rotation effect and position fixing effect with the connecting beam 120 when the telescopic rod 3120 changes in length, so as to meet the length change of the electric push rod 310. On this basis, by adjusting the extension and shortening actions of the telescopic rod 3120, the clockwise and counterclockwise rotation actions of the supporting beam 220 based on the fixing part 10 can be realized.

[0053] It should be further explained that the purpose of setting the electric push rod 310 is to generate a force along the rotation direction of the support beam 220 and the rotating part 20 by changing its length and taking advantage of the position fixing effect of the fixed part 10, so as to satisfy the rotation drive of the rotating part 20. The electric push rod 310 can be arbitrarily set as long as it satisfies the force component effect along the rotation direction of the rotating part 20. For example, the electric push rod 310 can be set perpendicular to the connecting beam 120, and at the same time, the connection point of the electric push rod 310 and the connecting beam 120 is staggered from the midpoint of the connecting beam 120, so that the connection point of the electric push rod 310 and the supporting beam 220 is staggered from the tangent point of the supporting beam 220 and the outer ring frame 210. At this time, when the telescopic rod 3120 is extended and retracted, the electric push rod 310 can provide a force component to drive the rotating part 20 to perform a rotation action.

[0054] In other embodiments of the present invention, the base 3110 is rotatably arranged on the connecting beam 120 in the length direction and staggered from the midpoint; at the same time, the connection point of the telescopic rod 3120 on the supporting beam 220 is also staggered from the midpoint of the supporting beam 220, so that the electric push rod 310 can realize rotational drive of the rotating part 20 without making the driving force arm shorter or disappearing and difficult to drive.

[0055] Further, in the rotating node provided in the embodiment of the present invention, the support part 40 may be a frame structure and fixedly arranged on the support part 40 in an integrated structure, and the support part 40 may also be a plurality of separate beam structures, which are overlapped and fixed with the support beam 220 respectively. In some embodiments of the present invention, the support part 40 includes at least two parallel and spaced support purlins 410. It should be noted that at least two parallel and spaced support purlins 410 are to simulate the parallel structure of the main cable 710, so as to provide a stable support foundation for the photovoltaic panel assembly 720. The two support purlins 410 may be connected into an integrated structure by a plurality of reinforcing ribs arranged perpendicular to the support purlins 410, or may be two separate support purlins 410 structures and fixedly arranged on the support beam 220 respectively; the support purlins 410 are arranged in parallel with the main cable 710, so that the photovoltaic panel assembly 720 that can be smoothly assembled on the main cable 710 can also be installed on the support purlins 410.

[0056] It should be noted that the supporting purlin 410 structure can save the material usage of the supporting portion 40 and reduce the production cost of the rotating node. At the same time, in order to ensure the supporting stability of the supporting portion 40 while saving materials, in some embodiments of the present invention, the supporting purlin 410 is a U-shaped beam to have a good stiffness effect. At the same time, the opening sides of two adjacent supporting purlins 410 are arranged toward each other, so that the two adjacent supporting purlins 410 can form a stable truss structure when reinforcing ribs are arranged in the middle, and have a tendency to deform toward the relative inner side when deformed, thereby avoiding the problem that the two supporting purlins 410 deform toward the same side when subjected to accidental force, thereby causing the photovoltaic panel assembly 720 to fall off.

[0057] Furthermore, if Figure 5As shown, an embodiment of the present invention further provides a flexible tracking photovoltaic system, which includes a main cable 710, a photovoltaic panel assembly 720, and a plurality of rotating nodes 730 provided in any of the above embodiments. The main cable 710 is tensioned through the end column and the middle column structure, and a plurality of rotating nodes 730 are arranged in parallel, each rotating node 730 is fixedly connected to the main cable 710 through its fixing portion 10, and the photovoltaic panel assembly 720 is fixedly arranged on the supporting portion 40 on the plurality of rotating nodes 730, so that it can follow the plurality of supporting portions 40 to realize the rotation based on the main cable 710 under the synchronous action of the plurality of driving portions 30, and meet the tracking effect of the light, thereby improving the power generation efficiency of the flexible tracking photovoltaic system. It should be noted that since the rotating node 730 has the above technical effect, the flexible tracking photovoltaic system also has the above technical effect, which will not be repeated herein.

[0058] In the present application, the terms "upper", "lower", "left", "right", "front", "back", "top", "bottom", "inner", "outer", "middle", "vertical", "horizontal", "lateral", "longitudinal" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings. These terms are mainly used to better describe the present application and its embodiments, and are not used to limit the indicated devices, elements or components to have a specific orientation, or to be constructed and operated in a specific orientation.

[0059] In addition, the terms "installed", "set", "provided with", "connected", "connected", and "socketed" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral structure; it can be a mechanical connection, or an electrical connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be an internal connection between two devices, elements, or components. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0060] The above description is only a preferred embodiment of the present invention and an explanation of the technical principles used, and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. The scope of the invention involved in the present invention is not limited to the technical solution formed by a specific combination of the above-mentioned technical features, but also should cover other technical solutions formed by any combination of the above-mentioned technical features or their equivalent features without departing from the above-mentioned inventive concept. For example, the above-mentioned features are replaced with the technical features with similar functions disclosed in the present invention (but not limited to) to form a technical solution.

Claims

1. A rotating node, arranged on the main cable of a flexible tracking photovoltaic system, characterized in that: include: A fixing part, wherein the fixing part is fixedly arranged on the main rope through a locking component, and the locking component is arranged in a one-to-one correspondence with the main rope; A rotating part and a driving part, wherein the rotating part is rotationally connected to the fixed part, the driving part is arranged on the fixed part and is transmission-connected to the rotating part, and the driving part is used to output power to drive the rotating part to rotate relative to the fixed part; The fixed part and the rotating part have a concentrically sleeved annular structure, and a sliding bearing is provided in the sleeved area of ​​the fixed part and the rotating part; The support part is fixedly connected to the rotating part, and the support part is used to carry the photovoltaic panel. During the process of the rotating node rotating the photovoltaic panel, the fixed part and the main cable maintain a fixed position, and the rotating part rotates relative to the fixed part.

2. The rotating node according to claim 1, characterized in that: The fixing portion comprises an inner ring frame and a connecting beam. The connecting beam is arranged through the center of the inner ring frame. The locking component cooperates with the connecting beam to form a connecting hole for the main cable to pass through.

3. The rotating node according to claim 2, characterized in that: The rotating part includes an outer ring frame and a supporting crossbeam. The supporting crossbeam is fixedly arranged on the outer wall surface of the outer ring frame and is arranged parallel to the connecting beam. The supporting part is fixedly arranged on the supporting crossbeam.

4. The rotating node according to claim 3, characterized in that: The outer ring frame includes an upper shell and a lower shell of a semicircular configuration. The joint area of ​​the upper shell and the lower shell is raised and fixedly connected by bolts to form an integral structure.

5. The rotating node according to claim 3, characterized in that: The rotating part also includes a reinforcing beam, two ends of which are respectively fixed to the outer wall surface of the outer ring frame and the supporting crossbeam, and at least two reinforcing beams are symmetrically arranged with respect to the outer ring frame.

6. The rotating node according to claim 3, characterized in that: The driving part is an electric push rod and its two ends are respectively hinged to the fixed part and the rotating part. The electric push rod includes a base and a telescopic rod. The base is rotatably set on the connecting beam, and the action end of the telescopic rod is rotatably set on the supporting beam.

7. The rotating node according to claim 6, characterized in that: The base is arranged on the length direction of the connecting beam and staggered from the midpoint of the connecting beam, and the telescopic rod is also arranged on the length direction of the supporting beam and staggered from the midpoint of the supporting beam.

8. The rotating node according to claim 1, characterized in that: The support portion comprises at least two parallel and spaced support purlins, wherein the support purlins are parallel to the main cable and are used to support the photovoltaic panel assembly.

9. The rotating node according to claim 8, characterized in that: The supporting purlin is a U-shaped beam, and the opening sides of two adjacent supporting purlins are arranged facing each other.

10. A flexible tracking photovoltaic system, characterized in that: It comprises a main cable, a photovoltaic panel assembly and a plurality of rotating nodes as described in any one of claims 1 to 9, wherein the plurality of rotating nodes are arranged in parallel and are respectively fixedly connected to the main cable, and the photovoltaic panel assembly is fixedly arranged on the supporting part on the rotating node.

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