Main shaft structure and photovoltaic support

Abstract

The utility model relates to a main shaft structure and a photovoltaic support. The main shaft structure comprises at least two main shafts and at least one connecting structure, the main shafts are sequentially connected in the first direction, each main shaft is provided with a connecting section, and the connecting sections of any two adjacent main shafts are connected through one connecting structure; the connecting structure comprises a connecting assembly and a supporting assembly, and the connecting assembly is arranged on the periphery of the connecting section of every two adjacent main shafts in a sleeving mode. The supporting assembly comprises two supporting pieces corresponding to the two adjacent main shafts respectively, and each supporting piece is arranged in the hollow cavity of the connecting section of the corresponding main shaft and abuts against the connecting section of the corresponding main shaft. The main shaft structure is used for improving the torsion resistance and the bending resistance of the main shaft structure at the joint.

Description

Technical Field

[0001] The present application relates to the field of photovoltaic technology, and in particular to a main shaft structure and a photovoltaic bracket. Background Art

[0002] Photovoltaic tracking brackets can ensure that the illuminated surface of photovoltaic modules is always facing the sun, absorbing more solar radiation energy, thereby reducing the cost of photovoltaic power generation.

[0003] In a photovoltaic tracking bracket, the main shaft transmits torque and rotates the components, allowing the tracking bracket to rotate. On the other hand, it transmits the components themselves and the loads they bear, such as wind and snow, back to the columns. The main shaft length can reach tens or even hundreds of meters. Therefore, the strength and stability of the main shaft at the connection position are crucial to the tracking bracket system.

[0004] Currently, the connection position of the main shaft is prone to deformation when subjected to external force or improper installation. Utility Model Content

[0005] Based on this, the present application provides a main shaft structure and a photovoltaic bracket, which are used to improve the torsional and bending resistance of the main shaft structure at the connection point.

[0006] In a first aspect, the present application provides a main shaft structure, comprising at least two main shafts connected in sequence along a first direction and at least one connecting structure, wherein the main shafts have connecting segments, and the connecting segments of any two adjacent main shafts are connected by a connecting structure;

[0007] The connecting structure includes a connecting component and a supporting component. The connecting component is sleeved on the outer periphery of the connecting section of the two adjacent main shafts; the supporting component includes two supporting members corresponding to the two adjacent main shafts respectively, each supporting member is arranged in the hollow cavity of the connecting section of the corresponding main shaft and abuts against the connecting section of the corresponding main shaft.

[0008] In one embodiment, the support member includes a first boss portion having a first end face and a second end face arranged opposite to each other along a first direction, and a side wall connecting the first end face and the second end face; the side wall of the support member abuts against the connecting section of the corresponding main shaft.

[0009] In one embodiment, the support member further includes a second boss portion, the second boss portion having a first end and a second end oppositely distributed along the first direction, the first end being connected to the second end surface; at the second end, the second boss portion has a first slope surface;

[0010] The connecting structure further includes a first pressing block disposed between the two connecting sections, the first pressing block having a third end and a fourth end that are oppositely distributed along the second direction; at the fourth end, the first pressing block has two second slopes that are oppositely arranged along the first direction; the second direction and the first direction are located in the same plane and are perpendicular to each other;

[0011] The third end contacts the inner wall of the connecting assembly; the two second slopes contact the first slopes of the two supporting members respectively.

[0012] In one embodiment, the extension surfaces of the two second slope surfaces intersect on a side away from the first pressing block;

[0013] The second slope surface is parallel to the contacting first slope surface.

[0014] In one embodiment, at the second end, the second boss portion further has a third slope surface, and the third slope surface is arranged opposite to the first slope surface along the second direction;

[0015] The connection structure further includes a second pressing block disposed between the two connecting sections, the first pressing block and the second pressing block being disposed opposite each other along the second direction; the second pressing block having a fifth end and a sixth end disposed opposite each other along the first direction, and at the fifth end, the second pressing block having two fourth slopes disposed opposite each other along the first direction;

[0016] The sixth end contacts the inner wall of the connecting assembly; the two fourth slopes contact the third slopes of the two supporting members respectively.

[0017] In one embodiment, the extension surface of the first slope surface intersects with the extension surface of the third slope surface on a side away from the corresponding support member, and the extension surfaces of the two fourth slope surfaces intersect with each other on a side away from the second pressing block;

[0018] The fourth slope surface is parallel to the contacting third slope surface.

[0019] In one embodiment, the projection of the hollow cavity of the connecting section on a plane perpendicular to the first direction has a first projected area, the projection of the first end surface on a plane perpendicular to the first direction has a second projected area, and the second end surface on a plane perpendicular to the first direction has a third projected area;

[0020] The second projection area is smaller than the first projection area, and the third projection area is larger than the first projection area.

[0021] In one embodiment, a projection of the connecting segment on a plane perpendicular to the first direction has a fourth projection area, and the third projection area is less than or equal to the sum of the first projection area and the fourth projection area.

[0022] In one embodiment, the projected area of ​​the first boss portion on a plane perpendicular to the first direction gradually increases from the first end surface to the second end surface.

[0023] In one embodiment, the connecting assembly includes a first connecting member and a second connecting member disposed opposite to each other along the second direction;

[0024] The first connecting member includes a first main body portion, and along the second direction, the first main body portion has a first groove, and the shape of the groove bottom of the first groove matches the shape of the end surface of the third end;

[0025] The second connecting member includes a second main body portion. Along the second direction, the second main body portion has a second groove. The shape of the groove bottom of the second groove matches the shape of the end surface of the sixth end.

[0026] In one embodiment, the first connecting member further includes two first connecting portions connected to opposite sides of the first main portion along the third direction, and the first connecting portions have a first opening;

[0027] The second connecting member further includes two second connecting parts connected to opposite sides of the second main body along the third direction, and the second connecting parts have a second opening;

[0028] The connection structure also includes fasteners correspondingly connected to the first opening and the second opening; and the third direction is perpendicular to the first direction and the second direction.

[0029] In a second aspect, the present application further provides a photovoltaic bracket, which includes the main axis structure described in any embodiment of the first aspect.

[0030] In the aforementioned spindle structure and photovoltaic support, the connection structure in the spindle structure includes a connection assembly and a support assembly, wherein the connection assembly is sleeved around the outer periphery of the connecting section of two adjacent spindles, thereby achieving a connection between the two connected spindles; the support assembly includes two support members, respectively disposed within the hollow cavities of the two adjacent spindle connecting sections and abutting against the connecting sections of the corresponding spindles, so that the support members can provide support from the inside of the spindle connecting sections. Thus, the connection structure can simultaneously strengthen the spindle connecting sections from both the outside and inside, thereby increasing the rigidity of the spindle connecting sections and enhancing the torsional and bending resistance of the spindle structure at the connection, thereby improving the overall stability of the photovoltaic support. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 An exploded diagram of the main shaft structure provided in an embodiment of the present application.

[0032] Figure 2 An assembly diagram of the main shaft structure provided in an embodiment of the present application.

[0033] Figure 3 A side view of the main shaft structure provided in an embodiment of the present application.

[0034] Figure 4 Provided in the embodiments of this application Figure 3 A cross-sectional view of AA'.

[0035] Figure 5A schematic structural diagram of a support member provided in an embodiment of the present application.

[0036] Figure 6 This is a schematic diagram of an assembly of the first pressing block, the second pressing block and the support member provided in an embodiment of the present application.

[0037] Figure 7 A schematic structural diagram of the first pressing block or the second pressing block provided in an embodiment of the present application.

[0038] Figure 8 Provided in the embodiments of this application Figure 4 A partial enlarged view.

[0039] Figure 9 A structural schematic diagram of the first connecting member or the second connecting member provided in an embodiment of the present application. DETAILED DESCRIPTION

[0040] To make the above-mentioned objects, features, and advantages of the present application more clearly understood, the specific embodiments of the present application are described in detail below with reference to the accompanying drawings. The following description sets forth many specific details to facilitate a full understanding of the present application. However, the present application can be implemented in many other ways than those described herein, and those skilled in the art can make similar improvements without violating the scope of the present application. Therefore, the present application is not limited to the specific embodiments disclosed below.

[0041] In the description of this application, it should be understood that if the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. appear, the orientation or position relationship indicated by these terms is based on the orientation or position relationship shown in the accompanying drawings, which is only for the convenience of describing this application and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on this application.

[0042] In addition, if the terms "first" or "second" appear, these terms are used for descriptive purposes only and should not be understood to indicate or imply relative importance or implicitly specify the number of technical features indicated. Therefore, a feature specified as "first" or "second" may explicitly or implicitly include at least one of such features. In the description of this application, if the term "plurality" appears, "plurality" means at least two, for example, two, three, etc., unless otherwise specifically defined.

[0043] In this application, unless otherwise specified or limited, the terms "mounted," "connected," "connected," "fixed," etc., should be interpreted broadly. For example, these terms may refer to fixed connections, removable connections, or integration; mechanical connections or electrical connections; direct connections or indirect connections through an intermediary; and internal communication between two components or interaction between two components, unless otherwise specified. Those skilled in the art will understand the specific meanings of these terms in this application based on the specific circumstances.

[0044] In this application, unless otherwise expressly specified or limited, if a first feature is described as being "above" or "below" a second feature, or similar descriptions, this may mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium. Furthermore, when a first feature is described as being "above," "above," or "above" a second feature, it may mean that the first feature is directly above or diagonally above the second feature, or simply means that the first feature is at a higher level than the second feature. When a first feature is described as being "below," "below," or "below" a second feature, it may mean that the first feature is directly below or diagonally below the second feature, or simply means that the first feature is at a lower level than the second feature.

[0045] It should be noted that if an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be an intermediate element. If an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be an intermediate element. If any, the terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used in this application are for illustrative purposes only and do not represent the only embodiment.

[0046] Photovoltaic tracking systems ensure that the illuminated surface of flat-panel photovoltaic modules is always facing the sun, making them one of the most effective methods for improving photovoltaic power generation efficiency and reducing construction costs. Under the same irradiation conditions, photovoltaic modules in automatic angle adjustment mode absorb more solar radiation energy than those in fixed installation mode, thereby reducing the cost of photovoltaic power generation.

[0047] For a tracker, its main shaft serves as a bidirectional link between the upper and lower parts, serving as the backbone of the structure. On the one hand, it transmits torque and rotates components, enabling the tracker to rotate according to controller commands; on the other hand, it transmits the components themselves, along with loads such as wind and snow, back to the columns. Because the main shaft of a single row of trackers can reach tens or even over a hundred meters in length, the strength and stability of the main shaft connection are crucial to the tracker system.

[0048] Currently, the main shafts are mainly connected to each other through external sleeves or clamps to strengthen the external force-bearing performance of the main shaft. However, due to the hollow structure of the main shaft, when subjected to torque or bending moment, the opening of the main shaft end will warp inward or locally bend and deform, causing the main shaft connection to fail and affecting the safety of the entire row of brackets.

[0049] Secondly, because the spindle is a hollow structure, in the original clamp design, excessive bolt preload will squeeze the spindle, causing the spindle to deform inward and reducing the strength of the spindle connection.

[0050] In addition, when the gap between the two main shafts increases due to installation errors during the actual installation of the bracket, the torsional and bending bearing capacities at the main shaft connection positions will be lower.

[0051] Figure 1 An exploded diagram of the main shaft structure provided in an embodiment of the present application. Figure 2 An assembly diagram of the main shaft structure provided in an embodiment of the present application. Figure 3 A side view of the main shaft structure provided in an embodiment of the present application. Figure 4 Provided in the embodiments of this application Figure 3 A cross-sectional view of AA'.

[0052] See Figures 1 to 4 An embodiment of the present application provides a main shaft structure, which includes at least two main shafts 1 connected in sequence along a first direction X1 and at least one connecting structure. The main shaft 1 has a connecting section, and the connecting sections of two adjacent main shafts 1 are connected by the connecting structure; the connecting structure includes a connecting component 2 and a supporting component, and the connecting component 2 is sleeved on the outer periphery of the connecting sections of two adjacent main shafts 1; the supporting component includes two supporting members 30 corresponding to the two adjacent main shafts 1, each supporting member 30 is arranged in the hollow cavity 11 of the connecting section of the corresponding main shaft 1, and abuts against the connecting section of the corresponding main shaft 1.

[0053] It can be seen from the composition structure of the above main shaft structure that Figures 1 to 4As shown, in the spindle structure, a connecting structure is connected between the connecting sections of two adjacent spindles 1. The connecting structure can support the connecting sections of the spindles 1, so that the adjacent spindles 1 can be spliced ​​sequentially along the first direction X1. The connecting structure includes a connecting component 2 and a supporting component, wherein the connecting component 2 is sleeved on the outer periphery of the connecting sections of the two adjacent spindles 1, realizing the connection between the two connected spindles 1 and improving the load-bearing capacity of the connecting position of the spindle 1; the supporting component includes two supporting members 30, which are respectively arranged in the hollow cavity 11 of the connecting sections of the two adjacent spindles 1 and abut against the connecting sections of the corresponding spindles 1, so that the supporting members 30 can provide support from the inside of the connecting sections of the spindle 1. It can be seen that the connection structure can play a reinforcing role from both the outside and inside of the connection section of the main shaft 1, thereby improving the rigidity of the connection section of the main shaft 1, so that when installing the main shaft structure, there is no need to worry about the connection section of the main shaft 1 being squeezed and deformed due to excessive force on the outside; at the same time, the connection structure also enhances the bearing capacity of the connection section of the main shaft 1 to torque or bending moment, thereby enhancing the torsional and bending resistance of the main shaft structure at the connection point, which is beneficial to improving the overall stability of the photovoltaic bracket.

[0054] For example, combined Figures 1 to 4 As shown, the first direction X1 is a direction parallel to the axial direction of the main shaft 1 .

[0055] Exemplarily, the main shaft 1 may be a tubular structure having a regular cross-sectional shape on a plane perpendicular to the first direction X1. For example, the main shaft 1 may be a round tube, a square tube, etc. This is merely an example and is not specifically limited.

[0056] Figure 5 A schematic structural diagram of a support member provided in an embodiment of the present application.

[0057] As a possible implementation, combining Figure 1 、 Figure 4 and Figure 5 As shown, the support member 30 includes a first boss portion 31 having a first end surface 311 and a second end surface 312 arranged opposite each other along a first direction X1, and a side wall 313 connecting the first end surface 311 and the second end surface 312. The side wall 313 of the support member 30 abuts the corresponding connecting section of the spindle 1. Based on this, the support member 30 can support the connecting section of the spindle 1 from within the spindle 1 through the abutment of the side wall 313 of the first boss portion 31 with the corresponding connecting section of the spindle 1, thereby improving the torsional and bending resistance of the connecting section of the spindle 1 and making it less susceptible to deformation.

[0058] Figure 6 This is a schematic diagram of an assembly of the first pressing block, the second pressing block and the support member provided in an embodiment of the present application. Figure 7A schematic diagram of the structure of the first pressing block or the second pressing block provided in the embodiment of the present application. For the convenience of explanation, Figure 6 There is a gap between the first pressing block 4, the second pressing block 5 and the slope surface of the support member 30, and they are actually in contact with each other.

[0059] As a possible implementation, combining Figures 1 to 7 As shown, the support member 30 also includes a second boss portion 32, the second boss portion 32 has a first end and a second end relatively distributed along the first direction X1, and the first end is connected to the first end face 311; at the second end, the second boss portion 32 has a first slope 321; the connection structure also includes a first pressing block 4 arranged between the two connecting sections, the first pressing block 4 has a third end 41 and a fourth end 42 relatively distributed along the second direction X2; at the fourth end 42, the first pressing block 4 has two second slopes 421 relatively arranged along the first direction X1; the second direction X2 and the first direction X1 are located in the same plane and are perpendicular to each other; the third end 41 contacts the inner wall of the connecting assembly 2; the two second slopes 421 respectively contact the first slopes 321 of the two support members 30.

[0060] At this time, combined Figures 1 to 7 As shown, the support member 30 also includes a second boss portion 32 connected to the second end face 312 of the first boss portion 31, and the connection structure also includes a first pressure block 4. Along the second direction X2, the two ends of the first pressure block 4 are in contact with the connection assembly 2 and the support member 30 respectively, and the first pressure block 4 is located between the connecting sections of the two adjacent main shafts 1, so that the fourth end 42 of the first pressure block 4 can simultaneously contact the second boss portion 32 of the support member 30 that is respectively in contact with the connecting sections of the two adjacent main shafts 1. During specific implementation, by tightening the connecting assembly 2, the first pressing block 4 can be squeezed along the second direction X2, and the first pressing block 4 squeezes the second boss portions 32 of the two support members 30 respectively through the contacting slopes, so that the first boss portions 31 of the two support members 30 and the connecting sections of their corresponding main shafts 1 are more tightly abutted, so that the support members 30 can better support the connecting sections of the corresponding main shafts 1, further improving the stiffness of the connecting sections of the main shaft 1, and at the same time further enhancing the bearing capacity of the connecting sections of the main shaft 1 to torque or bending moment, thereby further enhancing the torsional and bending resistance of the main shaft structure at the connection point, which is conducive to further improving the overall stability of the photovoltaic bracket.

[0061] In some examples, combined Figures 1 to 7 As shown, the extension surfaces of the two second slope surfaces 421 intersect at the side away from the first pressing block 4 ; the second slope surfaces 421 are parallel to the contacting first slope surface 321 .

[0062] At this time, combined Figures 1 to 7As shown, when the first pressing block 4 is subjected to the extrusion force to squeeze the second boss portion 32 of the two support members 30 along the second direction X2, the extrusion force applied to the first slope surface 321 is converted into a thrust from the second boss portion 32 to the first boss portion 31 through the inclined extending second slope surface 421 and the first slope surface 321 that is in contact with it and parallel to each other, thereby pushing the support member 30 to move toward the corresponding main shaft 1 connection section, so that the support member 30 and the corresponding main shaft 1 connection section are more closely abutted, so that the support member 30 can better support the corresponding main shaft 1 connection section, further improving the stiffness of the main shaft 1 connection section, and at the same time further enhancing the bearing capacity of the main shaft 1 connection section to torque or bending moment, thereby further enhancing the torsional and bending resistance of the main shaft structure at the connection point, which is conducive to further improving the overall stability of the photovoltaic bracket.

[0063] In addition, the second slope 421 of the first pressing block 4 is parallel to the contacting first slope 321, which allows the first pressing block 4 to fit tightly with the support member 30, so that the extrusion force applied by the first pressing block 4 can be dispersed to the entire first slope 321, evenly pushing the support member 30 to move.

[0064] Furthermore, as shown in Figure and Figure 7 As shown, the second slope surface 421 can be perpendicular to the plane formed by the first direction X1 and the second direction X2. At this time, the first slope surface 321 of the support member 30 in contact with the second slope surface 421 is also perpendicular to the plane formed by the first direction X1 and the second direction X2, so that the extrusion force applied to the first slope surface 321 along the second direction X2 can be converted into a thrust along the first direction X1 and directed from the second boss portion 32 to the first boss portion 31, so that the support member 30 can evenly support the connecting section of the corresponding main shaft 1 under the action of the thrust.

[0065] As a possible implementation, combining Figures 1 to 7 As shown, at the second end, the second boss portion 32 further has a third slope 322, and the third slope 322 is arranged opposite to the first slope 321 along the second direction X2; the connection structure also includes a second pressure block 5 arranged between the two connecting sections, and the first pressure block 4 and the second pressure block 5 are arranged opposite to each other along the second direction X2; the second pressure block 5 has a fifth end 51 and a sixth end 52 relatively distributed along the first direction X1, and at the fifth end 51, the second pressure block 5 has two fourth slopes 521 relatively arranged along the first direction X1; the sixth end 52 contacts the inner wall of the connection assembly 2; the two fourth slopes 521 are respectively in contact with the third slopes 322 of the two support members 30.

[0066] At this time, combined Figures 1 to 7As shown, the connection structure also includes a second pressing block 5. Along the second direction X2, the two ends of the second pressing block 5 are in contact with the connection assembly 2 and the support member 30 respectively, and the second pressing block 5 is located between the connection sections of the two adjacent main shafts 1, so that the fifth end 51 of the second pressing block 5 can simultaneously contact the second boss portion 32 of the support member 30 respectively abutting the connection sections of the two adjacent main shafts 1. In specific implementation, by pressing the connection assembly 2, the second pressing block 5 can be squeezed along the second direction X2. The second pressing block 5 squeezes the second boss portions 32 of the two support members 30 respectively through the contacting slopes, so that the first boss portions 31 of the two support members 30 abut against the connection sections of their corresponding main shafts 1 more closely, so that the support member 30 can better support the connection section of the corresponding main shaft 1, further improving the stiffness of the connection section of the main shaft 1, and at the same time further enhancing the bearing capacity of the connection section of the main shaft 1 to torque or bending moment, thereby further enhancing the torsion and bending resistance of the main shaft structure at the connection, which is conducive to further improving the overall stability of the photovoltaic bracket.

[0067] In some examples, combined Figures 1 to 7 As shown, the extension surface of the first slope surface 321 intersects with the extension surface of the third slope surface 322 on the side away from the corresponding support member 30, and the extension surfaces of the two fourth slope surfaces 521 intersect on the side away from the second pressing block 5; the fourth slope surface 521 is parallel to the contacting third slope surface 322.

[0068] At this time, combined Figures 1 to 7 As shown, when the second pressing block 5 is subjected to the extrusion force to squeeze the second boss portion 32 of the two support members 30 along the second direction X2, the extrusion force applied to the third slope surface is converted into a thrust from the second boss portion 32 to the first boss portion 31 through the inclined extending fourth slope surface and the third slope surface that is in contact with it and parallel to each other, thereby pushing the support member 30 to move toward the corresponding main shaft 1 connection section, so that the support member 30 and the corresponding main shaft 1 connection section are more closely abutted, so that the support member 30 can better support the corresponding main shaft 1 connection section, further improving the stiffness of the main shaft 1 connection section, and at the same time further enhancing the bearing capacity of the main shaft 1 connection section to torque or bending moment, thereby further enhancing the torsional and bending resistance of the main shaft structure at the connection point, which is conducive to further improving the overall stability of the photovoltaic bracket.

[0069] In addition, the fourth slope 521 of the second pressing block 5 is parallel to the contacting third slope 322, which allows the second pressing block 5 to fit tightly with the support member 30, so that the extrusion force applied by the second pressing block 5 can be dispersed to the entire third slope, evenly pushing the support member 30 to move.

[0070] Further, if Figure 4 and Figure 7As shown, the fourth slope surface can be perpendicular to the plane formed by the first direction X1 and the second direction X2. At this time, the third slope surface of the support member 30 in contact with the fourth slope surface is also perpendicular to the plane formed by the first direction X1 and the second direction X2, so that the extrusion force applied to the third slope surface along the second direction X2 can be converted into a thrust along the first direction X1 and directed from the second boss portion 32 to the first boss portion 31, so that the support member 30 can evenly support the connecting section of the corresponding main shaft 1 under the action of the thrust.

[0071] For example, when the main shaft structure is actually installed, along the second direction X2, the first pressing block 4 presses the support member 30 toward the side close to the second pressing block 5, and the second pressing block 5 presses the support member 30 toward the side close to the first pressing block 4.

[0072] In some examples, the inclination angles of the first slope 321, the second slope 421, the third slope 322, and the fourth slope 521 can be arbitrarily selected while satisfying the above conditions. For example, the angles between the first slope 321, the second slope 421, the third slope 322, and the fourth slope 521 and the first direction X1 or the second direction X2 can be any angle between 0° and 90°, and the embodiments of the present application are not limited to this. For example, the angles between the first slope 321, the second slope 421, the third slope 322, and the fourth slope 521 and the first direction X1 and the second direction X2 can all be 45°, so that the two support members 30 in contact with the first pressing block 4 and the second pressing block 5 can evenly share the extrusion force they are subjected to. This is for example only and is not a specific limitation.

[0073] For example, a guide structure may be provided on the sloped surface where the pressing block and the support member 30 contact, extending in the same direction as the sloped surface, to provide a guide for the relative friction between the pressing block and the support member 30. For example, guide grooves and / or guide protrusions may be provided, which are merely examples and are not intended to be limiting.

[0074] Exemplarily, the material of the first pressing block 4, the second pressing block 5 and the support member 30 can be the same as the material of the main shaft 1. For example, when the main shaft 1 is made of steel, the first pressing block 4, the second pressing block 5 and the support member 30 can also be made of steel.

[0075] Figure 8 Provided in the embodiments of this application Figure 4 A partial enlarged view.

[0076] As a possible implementation, combining Figure 4 and Figure 8As shown, the projection of the hollow cavity 11 of the connecting section on the plane perpendicular to the first direction X1 has a first projection area, the projection of the first end face 311 on the plane perpendicular to the first direction X1 has a second projection area, and the second end face 312 on the plane perpendicular to the first direction X1 has a third projection area; the second projection area is smaller than the first projection area, and the third projection area is larger than the first projection area.

[0077] Based on this, Figure 5 As shown, the side wall 313 connecting the first end face 311 and the second end face 312 is an inclined side wall 313. Figure 4 and Figure 8 As shown, the first end face 311 of the support member 30 can extend into the hollow cavity 11 of the connecting section of the corresponding main shaft 1, and the second end face 312 of the support member 30 can remain outside the hollow cavity 11 of the connecting section of the corresponding main shaft 1, so that the support member 30 can abut against the connecting section of the corresponding main shaft 1 through the inclined side wall 313, thereby effectively supporting the connecting section of the corresponding main shaft 1; at the same time, the inclined side wall 313 enables the support member 30 to adapt to main shafts 1 of different sizes, thereby improving the applicability of the connecting structure.

[0078] Further, if Figure 8 As shown, taking the main shaft 1 as a square tube main shaft 1, and the projection figure of the main shaft 1 on the plane perpendicular to the first direction X1 as an example, the hollow cavity 11 of the connecting section has a first length D1 in the second direction X2, the first end surface 311 has a second length D2 in the second direction X2, and the second end surface 312 has a third length D3 in the second direction X2; the second length D2 is smaller than the first length D1, and the third length D3 is smaller than the first length D1.

[0079] In some examples, combined Figure 4 and Figure 8 As shown, the projection of the connecting segment on the plane perpendicular to the first direction X1 has a fourth projection area, and the third projection area is less than or equal to the sum of the first projection area and the fourth projection area.

[0080] Among them, combined Figure 4 and Figure 8As shown, since the main shaft 1 is a hollow structure with a hollow cavity 11, and the tube wall of the main shaft 1 has a certain thickness, the projection of the connecting section on a plane perpendicular to the first direction X1 is actually the projection of the tube wall of the main shaft 1 at the connecting section on a plane perpendicular to the first direction X1. Since a connecting component 2 is also provided on the periphery of the connecting section of the main shaft 1, the third projection area can be set to be less than or equal to the sum of the first projection area and the fourth projection area, so that when the support member 30 supports the corresponding connecting section of the main shaft 1, the second end face 312 will not be directly squeezed by the connecting component 2, causing deformation of the connecting component 2 and / or the support member 30, so that the connection structure can effectively enhance the stiffness and torsional bending resistance of the connecting section of the main shaft 1, further improving the overall stability of the photovoltaic bracket.

[0081] Further, if Figure 8 As shown, taking the main shaft 1 as a square tube main shaft 1, and the projection figure of the main shaft 1 on the plane perpendicular to the first direction X1 as an example, at this time, the outer periphery of the tube wall of the main shaft 1 at the connecting section has a fourth length D4 in the second direction X2, and the third length D3 is less than or equal to the fourth length D4.

[0082] In some examples, combined Figure 4 and Figure 8 As shown, the projected area of ​​the first boss portion 31 on a plane perpendicular to the first direction X1 gradually increases from the first end face 311 toward the second end face 312. Based on this, the sidewall 313 of the support member 30 on the first boss portion 31 can be uniformly inclined. This facilitates closer contact between the support member 30 and the corresponding connecting section of the main shaft 1 when the second boss portion 32 is thrusting toward the first boss portion 31. This also allows the sidewall 313 to contact the corresponding connecting section of the main shaft 1 at any position, further improving the applicability of the connecting structure.

[0083] Further, if Figure 8 As shown, taking the main shaft 1 as a square tube main shaft 1, and the projection figure of the main shaft 1 on the plane perpendicular to the first direction X1 as an example, at this time, from the first end face 311 to the second end face 312, the length of the first boss portion 31 in the second direction X2 gradually increases.

[0084] Figure 9 A structural schematic diagram of the first connecting member or the second connecting member provided in an embodiment of the present application.

[0085] As a possible implementation, combining Figures 1 to 4 and Figure 9As shown, the connecting component 2 includes a first connecting member 21 and a second connecting member 22 arranged opposite to each other along the second direction X2; the first connecting member 21 includes a first main body portion 211, and along the second direction X2, the first main body portion 211 has a first groove 2111, and the bottom shape of the first groove 2111 matches the end face shape of the third end 41; the second connecting member 22 includes a second main body portion 221, and along the second direction X2, the second main body portion 221 has a second groove 2211, and the bottom shape of the second groove 2211 matches the end face shape of the sixth end 52.

[0086] Based on this, combined Figures 1 to 4 and Figure 9 As shown, the first connecting member 21 and the second connecting member 22 can clamp the connecting sections of the two main shafts 1 along the second direction X2, and squeeze the first pressing block 4 and the second pressing block 5 through the grooves on the main body of the connecting member. Because the first main body 211 of the first connecting member 21 has a first groove 2111 along the second direction X2, and the second main body 221 of the second connecting member 22 has a second groove 2211 along the second direction X2, the first connecting member 21 can squeeze the first groove 2111 along the second direction X2, and the second connecting member 22 can squeeze the second groove 2211 along the second direction X2. Among them, the bottom shape of the first groove 2111 matches the end face shape of the third end 41 of the first pressure block 4, and the bottom shape of the second groove 2211 matches the end face shape of the sixth end 52 of the second pressure block 5, so that the first groove 2111 can limit the first pressure block 4 to prevent the first pressure block 4 from shaking away from the second direction X2 during use, and the second groove 2211 can limit the second pressure block 5 to prevent the second pressure block 5 from shaking away from the second direction X2 during use.

[0087] At the same time, combined Figures 1 to 4 and Figure 9 As shown, the bottom of the first groove 2111 is farther away from the first pressure block 4 than the opening, and can play a role similar to a stiffening rib to improve the bending stiffness of the first connecting member 21; similarly, the bottom of the second groove 2211 is farther away from the second pressure block 5 than the opening, and can also play a role similar to a stiffening rib to improve the bending stiffness of the first connecting member 21.

[0088] For example, the first groove 2111 on the first connecting member 21 and the second groove 2211 on the second connecting member 22 may be formed by a stamping process.

[0089] In some examples, combined Figures 1 to 4 and Figure 9As shown, the first connecting member 21 also includes two first connecting parts 212 connected to the first main body 211 on opposite sides along the third direction X3, and the first connecting part 212 has a first opening 2121; the second connecting member 22 also includes two second connecting parts 222 connected to the second main body 221 on opposite sides along the third direction X3, and the second connecting part 222 has a second opening 2221; the connection structure also includes a fastener 6 corresponding to the first opening 2121 and the second opening 2221; the third direction X3 is perpendicular to the first direction X1 and the second direction X2.

[0090] Based on this, combined Figures 1 to 4 and Figure 9 As shown, the first opening 2121 and the second opening 2221 can be connected correspondingly by the fastener 6, shortening the distance between the first connecting portion 212 and the second connecting portion 222 in the second direction X2, so that the first connecting member 21 and the second connecting member 22 can respectively squeeze the first pressing block 4 and the second pressing block 5 along the second direction X2 through the pre-tightening force of the fastener 6, and the squeezing force along the second direction X2 is converted into a thrust from the second boss portion 32 to the first boss portion 31 in the first direction X1 through the slope contacting the pressing block and the support member 30, pushing the support member 30 to move toward the corresponding main shaft 1 direction, and the inclined side wall 313 on the support member 30 can make the support member 30 tightly abut against the connecting section of the corresponding main shaft 1 and generate sufficient supporting force under the action of the thrust along the first direction X1, further improving the stiffness of the connecting section of the main shaft 1, so that local warping and bending deformation will not occur at the connecting section of the main shaft 1, further improving the torsion and bending resistance of the main shaft 1, which is conducive to further improving the overall stability of the photovoltaic bracket.

[0091] Illustratively, the first connecting member 21 and the second connecting member 22 may be clamps.

[0092] For example, the fastener 6 may be a bolt, a rivet, etc., which is only given as an example and is not specifically limited.

[0093] For example, during actual installation, the two support members 30 can be first abutted against the corresponding connecting sections of the main shaft 1, the second connecting member 22, the second pressure block 5 and the connecting sections of the two main shafts 1 can be assembled, and then the first pressure block 4 and the first connecting member 21 can be placed so that the support member 30, the first pressure block 4 and the second pressure block 5 are in contact, and then the pre-tightening force of the fastener 6 is used to generate relative friction between the support member 30, the first pressure block 4 and the second pressure block 5, thereby realizing a fastened connection of the connecting sections of the two adjacent main shafts 1.

[0094] On the other hand, an embodiment of the present application further provides a photovoltaic bracket, which includes the main axis structure described in any of the above embodiments.

[0095] Compared with the prior art, the beneficial effects of the photovoltaic bracket are the same as the beneficial effects of the main shaft structure described in any of the above embodiments, and will not be repeated here.

[0096] The technical features of the above-mentioned embodiments can be combined arbitrarily. In order to make the description concise, not all possible combinations of the technical features in the above-mentioned embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0097] The above-described embodiments merely represent several implementation methods of the present application. While the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that a person of ordinary skill in the art may make various modifications and improvements without departing from the spirit of the present application, and these modifications and improvements fall within the scope of protection of the present application. Therefore, the scope of protection of the present patent application shall be determined by the appended claims.

Claims

1. A spindle structure, characterized in that: The main shaft structure includes at least two main shafts connected in sequence along a first direction and at least one connecting structure, wherein the main shaft has a connecting section, and any two adjacent connecting sections of the main shafts are connected by one of the connecting structures; The connecting structure includes a connecting component and a supporting component, and the connecting component is sleeved on the outer periphery of the connecting section of the two adjacent main shafts; the supporting component includes two supporting members corresponding to the two adjacent main shafts respectively, and each of the supporting members is arranged in the hollow cavity of the connecting section of the corresponding main shaft and abuts against the connecting section of the corresponding main shaft.

2. The spindle structure according to claim 1, characterized in that: The support member includes a first boss portion having a first end face and a second end face arranged opposite to each other along the first direction, and a side wall connecting the first end face and the second end face; the side wall of the support member abuts against the connecting section of the corresponding main shaft.

3. The spindle structure according to claim 2, characterized in that: The support member further includes a second boss portion, the second boss portion having a first end and a second end oppositely distributed along a first direction, the first end being connected to the second end surface; at the second end, the second boss portion has a first slope surface; The connecting structure further includes a first pressing block disposed between the two connecting sections, wherein the first pressing block has a third end and a fourth end that are oppositely distributed along the second direction; At the fourth end, the first pressing block has two second slopes arranged opposite to each other along the first direction; the second direction and the first direction are located in the same plane and are perpendicular to each other; The third end contacts the inner wall of the connecting assembly; the two second slopes contact the first slopes of the two supporting members respectively.

4. The spindle structure according to claim 3, characterized in that: The extension surfaces of the two second slope surfaces intersect at a side away from the first pressing block; The second slope surface is parallel to the first slope surface in contact with it.

5. The spindle structure according to claim 3, characterized in that: At the second end, the second boss portion further has a third slope surface, and the third slope surface is arranged opposite to the first slope surface along the second direction; The connection structure further includes a second pressing block disposed between the two connecting sections, the first pressing block and the second pressing block being disposed opposite to each other along the second direction; the second pressing block having a fifth end and a sixth end opposite to each other along the first direction, and at the fifth end, the second pressing block having two fourth slopes opposite to each other along the first direction; The sixth end contacts the inner wall of the connecting assembly; the two fourth slopes contact the third slopes of the two supporting members respectively.

6. The spindle structure according to claim 5, characterized in that: The extension surface of the first slope surface intersects with the extension surface of the third slope surface at a side away from the corresponding support member, and the extension surfaces of the two fourth slope surfaces intersect with each other at a side away from the second pressing block; The fourth slope surface is parallel to the contacting third slope surface.

7. The spindle structure according to any one of claims 2 to 6, characterized in that: The projection of the hollow cavity of the connecting section on a plane perpendicular to the first direction has a first projected area, the projection of the first end surface on a plane perpendicular to the first direction has a second projected area, and the second end surface on a plane perpendicular to the first direction has a third projected area; The second projection area is smaller than the first projection area, and the third projection area is larger than the first projection area.

8. The spindle structure according to claim 7, characterized in that: A projection of the connecting segment on a plane perpendicular to the first direction has a fourth projection area, and the third projection area is smaller than or equal to the sum of the first projection area and the fourth projection area.

9. The spindle structure according to any one of claims 2 to 6, characterized in that: From the first end surface toward the second end surface, a projected area of ​​the first boss portion on a plane perpendicular to the first direction gradually increases.

10. The spindle structure according to claim 5, characterized in that: The connecting assembly includes a first connecting member and a second connecting member arranged opposite to each other along the second direction; The first connecting member includes a first main body portion, and along the second direction, the first main body portion has a first groove, and the shape of the groove bottom of the first groove matches the shape of the end surface of the third end; The second connecting member includes a second main body portion. Along the second direction, the second main body portion has a second groove. The shape of the groove bottom of the second groove matches the shape of the end surface of the sixth end.

11. The spindle structure according to claim 10, characterized in that: The first connecting member further includes two first connecting parts connected to opposite sides of the first main body along the third direction, and the first connecting parts have a first opening; The second connecting member further includes two second connecting parts connected to opposite sides of the second main body along the third direction, and the second connecting parts have a second opening; The connection structure further includes fasteners correspondingly connected to the first opening and the second opening; and the third direction is perpendicular to the first direction and the second direction.

12. A photovoltaic support, characterized in that: The photovoltaic bracket includes the main shaft structure described in any one of claims 1 to 11.

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