Locking structure, photovoltaic support and photovoltaic system

Abstract

The present application relates to a locking structure, a photovoltaic support and a photovoltaic system. The locking structure comprises a box body (110), a driving member (120), a driven member (130) and a locking set. The locking set comprises at least two locking members (141) and an elastic member (142) connected between the two locking members (141), the locking members (141) being arranged between the box body (110) and the driven member (130). The elastic member (142) is used for driving the locking members (141) to be at locking positions, such that the locking members (141) at the locking positions prevent the driven member (130) from circumferentially rotating relative to the locking members (141). By means of push portions (122), the driving member (120) pushes the locking members (141) to deviate from the locking positions until a first engagement portion (121) abuts against a second engagement portion (1311), so as to drive the driven member (130) to rotate.

Description

Locking structure, photovoltaic bracket and photovoltaic system

[0001] Cross-references

[0002] This application claims priority to Chinese patent application No. 2023116207839, filed on November 30, 2023, entitled “Locking structure, photovoltaic bracket and photovoltaic system,” the entire text of which is hereby incorporated by reference. Technical Field

[0003] The present application relates to the field of photovoltaic technology, and in particular to a locking structure, a photovoltaic bracket and a photovoltaic system. Background Art

[0004] In a photovoltaic power generation system, photovoltaic modules are installed using photovoltaic brackets, which can track the changes in the sun's azimuth angle so that the light-receiving surface of the photovoltaic module can receive solar radiation to the greatest extent, thereby increasing power generation.

[0005] Typically, photovoltaic modules are mounted on the main shaft of a photovoltaic rack. A drive unit rotates the main shaft to change the orientation of the modules. However, the main shaft cannot transmit high torque and is prone to twisting and oscillation in strong winds, which not only affects the photovoltaic power generation rate but also easily causes the main shaft to twist and damage.

[0006] Summary of the Invention

[0007] According to various embodiments of the present application, a locking structure, a photovoltaic bracket, and a photovoltaic system are provided.

[0008] In a first aspect, the present application provides a locking structure applied to the main shaft of a photovoltaic bracket, the locking structure comprising:

[0009] Box;

[0010] An active member is at least partially located in the box body and is provided with a first clamping portion and at least two shifting portions spaced apart along the circumference of the active member;

[0011] The driven member is at least partially located in the box body and is provided with a second clamping portion; the first clamping portion and the second clamping portion in the plugged state have a first gap along the circumferential direction;

[0012] a locking group, located between adjacent driving portions, comprising at least two locking members and an elastic member connected between the two locking members; the locking members are located between the box body and the follower; the elastic member is used to drive the locking members to a locked position, so that the locking members in the locked position prevent the follower from rotating relative to the locking members along the circumferential direction;

[0013] The active member is configured to be operably rotated to push the locking member to deviate from the locking position through the toggle portion until the first clamping portion abuts against the second clamping portion, thereby driving the driven member to rotate.

[0014] According to some embodiments of the present application, the first clamping portion includes a clamping block, and the second clamping portion includes a clamping groove for the clamping block to pass through.

[0015] According to some embodiments of the present application, the follower includes a locking shaft and a driven shaft connected to the locking shaft, and the driven shaft can be driven to rotate by the locking shaft.

[0016] According to some embodiments of the present application, the engaging groove is provided on the locking shaft, and the driven shaft is provided with an inserting column, which is used for inserting and cooperating with the engaging groove.

[0017] According to some embodiments of the present application, the clamping blocks include two, and the two clamping blocks are arranged at intervals along the circumference, and the two surround an avoidance groove for the insertion of the plug-in column.

[0018] According to some embodiments of the present application, the first clamping portion is located in a central area of ​​the active member, and the second clamping portion is located in a central area of ​​the driven member.

[0019] According to some embodiments of the present application, when the locking member is in the locking position, the locking member and the toggle portion have a second gap along the circumferential direction, and the second gap is smaller than the first gap.

[0020] According to some embodiments of the present application, between adjacent driving parts and the elastic members, along the circumferential direction and along the direction from the elastic member to the driving part, the radial spacing between the driven member and the box body gradually decreases;

[0021] When the locking member is in the locking position, the radial distance between the follower and the housing is equal to the diameter of the locking member.

[0022] According to some embodiments of the present application, a first bearing is connected between the inner wall of the box and the active member;

[0023] A second bearing is connected between the inner wall of the box and the driven member.

[0024] According to some embodiments of the present application, the active member is configured with a first stepped groove, and the first bearing is located in the first stepped groove;

[0025] The driven member is configured with a second stepped groove, and the second bearing is located in the second stepped groove.

[0026] According to some embodiments of the present application, the locking structure further includes a first limiting member connected to the box body; the first limiting member abuts against one side of the active member along its own axial direction to limit the active member from moving along its own axial direction;

[0027] The locking structure further includes a second limiting member connected to the box body; the second limiting member abuts against the follower to limit the follower from moving along its own axial direction.

[0028] According to some embodiments of the present application, the first limiting member includes a first baffle connected to one side of the box along its own axial direction, and the first baffle abuts against one side of the active member along its own axial direction; or

[0029] The first limiting member includes a first retaining ring connected to the inner wall of the box, and the first retaining ring abuts against one side of the active member along its own axial direction.

[0030] According to some embodiments of the present application, the second position-limiting member includes a second baffle connected to one side of the box along its own axial direction, and the second baffle abuts against one side of the follower along its own axial direction; or

[0031] The second limiting member includes a second retaining ring connected to the inner wall of the box, and the second retaining ring abuts against one side of the driven member along its own axial direction.

[0032] According to some embodiments of the present application, the box body includes a mounting seat and a spacer sleeve mounted in the mounting seat, and at least part of the locking group, the active member, and the driven member are connected to the spacer sleeve.

[0033] According to some embodiments of the present application, the first clamping portion in the plugged state is deflected by a preset angle along the circumferential direction and then abuts against the second clamping portion.

[0034] In a second aspect, the present application provides a photovoltaic bracket.

[0035] According to an embodiment of the present application, the photovoltaic bracket includes a first main shaft, a second main shaft, and the locking structure as described above connected between the first main shaft and the second main shaft; the first main shaft and the second main shaft are used to install photovoltaic components.

[0036] Thirdly, the present application also proposes a photovoltaic system.

[0037] A photovoltaic system according to an embodiment of the present application includes the photovoltaic bracket as described above and a photovoltaic assembly installed on the photovoltaic bracket.

[0038] The details of one or more embodiments of the present application are set forth in the accompanying drawings and the description below. Other features, objects, and advantages of the present application will become apparent from the description, drawings, and claims. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] In order to more clearly illustrate the specific implementation methods of the present application or the technical solutions in conventional technologies, the following is a brief introduction to the drawings required for use in the specific implementation methods or conventional technical descriptions. Obviously, the drawings described below are some implementation methods of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0040] FIG1 is a perspective view of a locking structure provided in an embodiment of the present application.

[0041] FIG. 2 is an exploded view of the locking structure shown in FIG. 1 .

[0042] FIG3 is a partial schematic diagram of the locking structure shown in FIG1 .

[0043] FIG4 is a schematic diagram of the locking shaft and the driven shaft in the locking structure shown in FIG3 .

[0044] FIG5 is a schematic diagram of the locking structure shown in FIG1 at a first cross section.

[0045] FIG6 is a partial enlarged view of point A in the locking structure shown in FIG5 .

[0046] FIG7 is a cross-sectional view of the locking structure shown in FIG1 at a second cross section.

[0047] FIG8 is a schematic diagram of a photovoltaic bracket provided in one embodiment of the present application.

[0048] Explanation of the accompanying drawings: 10, photovoltaic bracket; 100, locking structure; 110, box body; 111, mounting seat; 112, spacer; 120, active part; 121, first clamping part; 1211, clamping block; 1212, avoidance groove; 1213, first gap; 122, toggle part; 123, first stepped groove; 130, driven part; 131, locking shaft; 1311, second clamping part; 132, driven shaft; 1321, plug-in column; 1322, second stepped groove; 141, locking part; 142, elastic part; 151, first bearing; 152, second bearing; 161, first limiting part; 1611, first baffle; 162, second limiting part; 1621, second baffle; 210, first main shaft; 220, second main shaft; 300, drive unit. DETAILED DESCRIPTION

[0049] The following will clearly and completely describe the technical solutions of this application in conjunction with the embodiments. Obviously, the embodiments described are only part of the embodiments of this application, not all of them. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0050] To facilitate understanding of this embodiment, this embodiment is described in detail below with reference to the accompanying drawings.

[0051] Referring to Figures 1, 2, 5 and 6, a locking structure 100 provided in one embodiment of the present application is applied to the main shaft of the photovoltaic bracket 10 as shown in Figure 8. The locking structure 100 includes a housing 110, an active member 120, a driven member 130 and a locking group. At least a portion of the active member 120 is located in the housing 110, and the active member 120 is provided with a first clamping portion 121 and at least two circumferentially spaced toggle portions 122, as shown in Figure 5, where the circumferential direction is indicated by arrow X. At least a portion of the driven member 130 is located in the housing 110, and the driven member 130 is provided with a second clamping portion 1311; when the first clamping portion 121 and the second clamping portion 1311 are plugged in, the two have a first gap 1213 along the circumferential direction. The locking group is located between adjacent toggle portions 122, and includes at least two locking members 141 and an elastic member 142 connected between the two locking members 141 distributed along the circumferential direction; the locking member 141 is located between the box body 110 and the follower 130; the elastic member 142 is used to drive the locking member 141 to a locked position, so that the locking member 141 in the locked position can prevent the follower 130 from rotating circumferentially relative to the locking member 141; the active member 120 is configured to be operably rotated to push the locking member 141 away from the locked position through the toggle portion 122 until the first clamping portion 121 moves along the first gap 1213 to abut against the second clamping portion 1311, thereby driving the follower 130 to rotate.

[0052] Taking the first engaging portion 121 at the left end shown in Figures 5 and 6 as an example, it can be understood that the first engaging portion 121 has a first gap 1213 with the follower 130 on both the upper and lower sides along the circumferential direction. When the first engaging portion 121 at the left end rotates clockwise from the position shown in Figure 6 until the first gap 1213 on the upper side is eliminated, the upper side of the first engaging portion 121 at the left end can abut against the second engaging portion 1311 of the follower 130, and accordingly, the first gap 1213 between the lower side of the first engaging portion 121 at the left end and the follower 130 is doubled. When the first engaging portion 121 at the left end rotates counterclockwise from the position shown in Figure 6 until the first gap 1213 on the lower side is eliminated, the lower side of the first engaging portion 121 can abut against the second engaging portion 1311 of the follower 130, and accordingly, the first gap 1213 between the upper side of the first engaging portion 121 and the follower 130 is doubled. It can be understood that when there are two first clamping parts 121, the first clamping part 121 at the right end is opposite to the first clamping part 121 at the left end, that is, when the upper side of the first clamping part 121 at the left end abuts against the second clamping part 1311 of the follower 130, the lower side of the first clamping part 121 at the right end abuts against the second clamping part 1311 of the follower 130.

[0053] As shown in Figures 2, 5 and 8, when the locking structure 100 is applied to the photovoltaic bracket 10, the active member 120 can be connected to the input spindle of the photovoltaic bracket 10 by fasteners such as screws, and the driven member 130 is connected to the output spindle of the photovoltaic bracket 10. When the photovoltaic bracket 10 is operating normally, the rotational power of the drive unit 300 is transmitted to the active member 120 through the input spindle. The active member 120 drives the locking member 141 to move away from the locked position through the toggle portion 122. At this time, when the rotational power of the drive unit 300 acts on the active member 120 and the driven member 130, the locking member 141 no longer restricts the rotation of the driven member 130. As the active member 120 continues to rotate until the first gap 1213 on one side is eliminated, so that the first clamping portion 121 abuts against the second clamping portion 1311, the locking member 141 and the driven member 130 can be driven by the active member 120 and rotate synchronously, thereby transmitting the rotational power to the output main shaft connected to the driven member 130, achieving synchronous rotation of multiple main shafts, and thus ensuring the consistency of the orientation of multiple photovoltaic modules (not shown) and the photovoltaic power generation rate. During the power transmission process, since the active member 120 and the driven member 130 achieve torque transmission through the rigid contact of the two clamping portions, their force transmission effect is more stable and can achieve high torque transmission, which meets actual usage requirements.

[0054] It can be understood that as the active member 120 continues to rotate until the first clamping portion 121 and the second clamping portion 1311 abut against each other, the locking member 141 is increasingly farther away from the locking position. Correspondingly, the compression amount of the elastic member 142 gradually increases, and the compression amount is less than the maximum compression amount of the elastic member 142, thereby ensuring the subsequent reliability of the elastic member 142.

[0055] As shown in Figures 2, 5 and 8, when the wind load acts on the output main shaft, the output main shaft will produce torsional deformation and drive the driven member 130 to produce a slight movement. Even if the slight movement generated by the driven member 130 will drive the locking member 141 to produce a slight movement, since an elastic member 142 is provided between adjacent locking members 141, the locking member 141 will quickly return to the locked position under the action of the elastic member 142, so that the driven member 130 cannot continue to rotate relative to the locking member 141, and the second clamping portion 1311 cannot abut against the first clamping portion 121. Therefore, the torque of the output main shaft cannot be transmitted to the input main shaft connected to the active member 120, and the torque is blocked at the locking structure 100, thereby reducing the possibility of damage caused by twisting of the input main shaft, improving the torsional performance and service life of the photovoltaic bracket 10, and thus ensuring the photovoltaic power generation rate.

[0056] In this embodiment, taking the example of each locking group including two locking members 141, two locking members 141 are provided between the two toggle parts 122 to cooperate therewith, wherein one locking member 141 is used to limit the clockwise rotation of the follower 130, and the other locking member 141 is used to limit the counterclockwise rotation of the follower 130. In this way, locking in two directions can be achieved respectively by the two locking members 141, thereby improving the reliability of the locking structure 100. By coordinating the locking structure with the drive unit, the torque holding point of the photovoltaic bracket is increased from one to multiple, thereby significantly improving the wind resistance of the entire photovoltaic bracket. It can be understood that in other embodiments, the number of locking members in each locking group may also be greater than two, that is, the number of locking members is 2N, where N is a positive integer and can be set according to actual needs during use.

[0057] By providing the elastic member 142, when there is a slight deviation between the locking member 141 and the follower 130, the elastic member 142 can quickly act on the locking member 141 to maintain it in the locked position, thereby ensuring the locking effect of the locking structure 100. The shifting portion 122 may be a shifting claw, the locking member 141 may be a roller, and the elastic member 142 may be a V-shaped shifting piece.

[0058] As shown in Figure 5, in some embodiments, multiple locking groups and toggling parts 122 are provided, and the locking groups and toggling parts 122 are arranged alternately along the circumference. By providing multiple locking groups and toggling parts 122, the contact area between the locking group and the follower 130 is increased, thereby improving the locking accuracy and reliability of the locking structure 100.

[0059] Referring to Figures 2 and 5, in one embodiment, the first clamping portion 121 includes a clamping block 1211, and the second clamping portion 1311 includes a clamping groove (not shown) for the clamping block 1211 to pass through, and the width of the clamping groove along the circumferential direction is greater than the width of the clamping block 1211 along the circumferential direction, so that the active member 120 must first rotate a certain amplitude before the clamping block 1211 will abut against the groove wall of the clamping groove, thereby ensuring that the locking member 141 has sufficient travel to deviate from the locked position. In some embodiments, the clamping block 1211 is a square block and the clamping groove is a square groove. Through the clamping fit of the clamping block 1211 and the clamping groove, the torque of the active member 120 is transmitted to the driven member 130, thereby realizing power transmission. In other embodiments, the active member may also have a clamping groove, and the driven member may have a clamping block.

[0060] As shown in Figures 5 and 6, in one embodiment, the first engaging portion 121 in the plugged-in state rotates circumferentially through a preset angle α before abutting against the second engaging portion 1311. The deflection angle α is less than 1 degree. Since the locking structure 100 is applied to the main shaft of the photovoltaic bracket 10, which is used to mount photovoltaic modules, if the preset angle α is too large, the first gap 1213 between the first engaging portion 121 and the second kerb 1311 will be larger, resulting in a significant difference in the installation angles between the active member 120 and the passive member 130. This will cause a significant difference in the tilt angles of photovoltaic modules mounted on two adjacent main shafts, increasing the angle between the planes containing the adjacent photovoltaic modules. On the one hand, uneven photovoltaic modules will affect the aesthetics of the design. On the other hand, it may also result in some photovoltaic modules not fully facing the sun, thereby affecting the power generation efficiency of some photovoltaic modules. Therefore, by setting an appropriate preset angle α, the locking member 141 can be guaranteed to have sufficient travel to deviate from the locked position, while ensuring both aesthetics and power generation efficiency.

[0061] 2 , 4 , and 7 , in one embodiment, the driven member 130 includes a locking shaft 131 and a driven shaft 132 connected to the locking shaft 131. The driven shaft 132 can be driven to rotate by the locking shaft 131. In some embodiments, the locking shaft 131 and the driven shaft 132 can be threadedly connected, each having a threaded hole and connected by a bolt, thereby transmitting the torque transmitted from the driving member 120 to the locking shaft 131 to the driven shaft 132.

[0062] As shown in Figures 2 and 4, in one embodiment, a snap-in groove is provided on the locking shaft 131, and the driven shaft 132 is constructed with a plug-in column 1321, which is used to be plugged into and cooperate with the snap-in groove. In this way, the coaxiality of the driven shaft 132 and the locking shaft 131 can be ensured, so that the locking structure 100 can withstand a larger bending moment, thereby ensuring the stability of power transmission.

[0063] As shown in Figures 2 and 5, in one embodiment, two engaging blocks 1211 are provided, spaced apart along the circumference, and define a clearance groove 1212 for the insertion post 1321. In other words, the active member 120 and the driven shaft 132 are connected via the clearance groove 1212 and the insertion post 1321. This arrangement ensures the coaxiality of the active member 120 and the driven shaft 132, allowing them to withstand greater bending moments, improve the stability of power transmission, and enhance the locking performance of the locking structure 100.

[0064] As shown in Figures 2, 4, and 5, in one embodiment, the first clamping portion 121 is located in the center area of ​​the active member 120, and the second clamping portion 1311 is located in the center area of ​​the driven member 130. In some embodiments, taking the first clamping portion 121 as a clamping block 1211, the second clamping portion 1311 as a clamping groove, and the active member 120 including the aforementioned locking shaft 131 and the active shaft as an example, the plug-in column 1321 is also located in the center area of ​​the driven shaft 132. By arranging the matching structures such as the clamping portion and the plug-in column 1321 in the center area of ​​each component, the coaxiality of the active member 120, the locking shaft 131, and the driven shaft 132 is ensured, which not only ensures the stability of torque transmission but also increases the torsional resistance of the locking structure 100. When applied to the photovoltaic bracket 10 shown in Figure 8, the torsional resistance of the photovoltaic bracket 10 is correspondingly increased, thereby improving the reliability of the photovoltaic bracket 10.

[0065] As shown in Figures 5 and 6, in one embodiment, when the locking member 141 is in the locked position, a second gap is defined circumferentially between the locking member 141 and the toggle portion 122, which is smaller than the first gap 1213. In other words, when the active member 120 rotates to a first angle, the toggle portion 122 first moves to abut against the locking member 141, and only when the active member 120 rotates to a second angle does the first engaging portion 121 abut against the second engaging portion 1311. This arrangement ensures that the locking member 141 has sufficient travel to deviate from the locked position, thereby ensuring power transmission between the active member 120 and the driven member 130.

[0066] As shown in Figure 5, in one embodiment, the radial spacing between the follower 130 and the housing 110 gradually decreases along the circumferential direction between adjacent toggle portions 122 and elastic members 142, and in the direction of the elastic member 142 toward the toggle portion 122. When the locking member 141 is in the locked position, the radial spacing between the follower 130 and the housing 110 is equal to the diameter of the locking member 141. In other words, the outer surface of the follower 130 forms a profiled transitional arc. This variable diameter arrangement allows the housing 110 and the follower 130 to cooperate in restricting the locking member 141 in the locked position from moving toward a smaller gap, that is, from moving toward the toggle portion 122. This restricted movement of the locking member 141 further limits the torsion of the follower 130, preventing the power of the follower 130 from being transmitted to the active member 120, thereby blocking torque.

[0067] As shown in Figures 2, 3 and 7, in one embodiment, a first bearing 151 is connected between the inner wall of the housing 110 and the active member 120. Since the active member 120 rotates relative to the housing 110 when the photovoltaic bracket 10 is in normal operation, by providing the first bearing 151 between the active member 120 and the inner wall of the housing 110, direct contact between the active member 120 and the housing 110, which causes wear, can be prevented, thereby improving the service life of the locking structure 100. Furthermore, a second bearing 152 is connected between the inner wall of the housing 110 and the driven member 130. By providing the first bearing 151 and the second bearing 152, on the one hand, the torsional resistance of the main shaft can be improved, ensuring that the active member 120 and the driven member 130 rotate coaxially, and at the same time, the friction and wear between the active member 120 and the driven member 130 and the housing 110 can be reduced, thereby extending the service life of the locking structure 100. The first bearing 151 and the first bearing 151 can be deep groove ball bearings or ball bearings.

[0068] As shown in Figures 2 to 4 , in one embodiment, the active member 120 is configured with a first stepped groove 123, in which the first bearing 151 is located; the passive member 130 is configured with a second stepped groove 1322, in which the first bearing 151 is located. Providing stepped grooves on both the active member 120 and the passive member 130 not only facilitates assembly of the bearings but also reduces the radial space occupied by the active member 120 and the first bearing 151, making the locking structure 100 more compact.

[0069] As shown in Figures 2 and 7 , in one embodiment, the locking structure 100 further includes a first stopper 161 connected to the housing 110. The first stopper 161 abuts one side of the active member 120 along its own axial direction, thereby limiting the axial movement of the active member 120. By limiting the axial movement of the active member 120, the possibility of the active member 120 being misaligned, resulting in the toggle portion 122 being unable to abut the locking member 141 and deviating from the locked position, is reduced, thereby ensuring the reliability of torque transmission.

[0070] As shown in Figures 1, 2, and 7, in some embodiments, the first stopper 161 includes a first baffle 1611 connected to one side of the housing 110 along its own axial direction. The first baffle 1611 abuts one side of the active member 120 along its own axial direction. The first baffle 1611 and the housing 110 can be connected by fasteners such as screws. In this way, the sealing performance of the entire locking structure 100 is improved. In other embodiments, the first stopper includes a first retaining ring connected to the inner wall of the housing. The first retaining ring abuts one side of the active member along its own axial direction and abuts one side of the first bearing.

[0071] As shown in Figures 1, 2, and 5, in some embodiments, the locking structure 100 further includes a second stopper 162 connected to the housing 110. The second stopper 162 abuts against the follower 130 to limit axial movement of the follower 130. By limiting axial movement of the follower 130, the possibility of misalignment of the follower 130, which could affect locking accuracy, is reduced, thereby ensuring torsional resistance.

[0072] In some embodiments, as shown in Figures 2 and 5, the second stopper 162 includes a second baffle 1621 connected to one side of the housing 110 along its own axial direction. The second baffle 1621 abuts one side of the follower 130 along its own axial direction. The second baffle 1621 and the housing 110 can be connected by fasteners such as screws. In other embodiments, the second stopper includes a second retaining ring connected to the inner wall of the housing. The second retaining ring abuts one side of the follower along its own axial direction and abuts one side of the first bearing.

[0073] As shown in Figures 2 and 7, in one embodiment, the housing 110 includes a mounting seat 111 and a spacer sleeve 112 that is sleeved within the mounting seat 111. The locking assembly, the active member 120, and at least a portion of the driven member 130 are connected to the spacer sleeve 112. The spacer sleeve 112 not only provides a seal but also provides a secure mounting function, preventing components such as the locking member 141 from sliding out, thereby improving the reliability of the locking structure 100.

[0074] As shown in Figure 8, an embodiment of the present application also provides a photovoltaic bracket 10, including a first main shaft 210, a second main shaft 220 and the above-mentioned locking structure 100 connected between the first main shaft 210 and the second main shaft 220; the first main shaft 210 and the second main shaft 220 are used to install photovoltaic components.

[0075] When this locking structure is applied to a photovoltaic bracket, the active member 120 can be connected to the first main shaft 210 of the photovoltaic bracket by fasteners such as screws, and the driven member 130 can be connected to the second main shaft 220 of the photovoltaic bracket. This eliminates the need for a bearing assembly or the like between the first main shaft 210 and the second main shaft 220 to achieve power transmission. It is understood that the photovoltaic bracket further includes a drive unit 300, and the first main shaft 210 is connected to the output end of the drive unit 300.

[0076] When the photovoltaic bracket is operating normally, the rotational power of the drive unit 300 will be transmitted to the second main shaft 220 through the first main shaft 210 and the locking structure, so as to achieve synchronous rotation of the first main shaft 210 and the second main shaft 220, thereby ensuring the consistency of the orientation of the multiple photovoltaic components installed on the first main shaft 210 and the second main shaft 220, and ensuring the efficiency of photovoltaic power generation. When the wind load acts on the second main shaft 220, the torque is blocked at the locking structure, thereby reducing the risk of the torque being transmitted to the drive unit 300 through the first main shaft 210 and affecting its reliability, improving the torsional performance of the photovoltaic bracket, and thus ensuring the photovoltaic power generation rate. Through the cooperation of the locking structure and the drive unit, the torque holding point of the photovoltaic bracket is increased from one to multiple, so that the wind resistance of the entire photovoltaic bracket is significantly improved.

[0077] In some embodiments, the present application further provides a photovoltaic system (not shown) comprising the photovoltaic support 10 described above and a photovoltaic module (not shown) mounted on the photovoltaic support. The photovoltaic system, by including the photovoltaic support 10 described above, not only enables power transmission but also improves the torsional resistance of the photovoltaic support, thereby enhancing the reliability of the photovoltaic system.

[0078] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, it does not need to be further defined or explained in subsequent drawings.

[0079] 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.

[0080] In addition, in the description of the embodiments of this application, unless otherwise specified or limited, the terms "installed," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to internal connections between two components. Those skilled in the art will understand the specific meanings of the above terms in this application based on the specific circumstances.

[0081] In the description of this application, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are intended solely to facilitate the description of this application and simplify the description. They do not indicate or imply that the devices or components referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on this application. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0082] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some or all of the technical features therein. These modifications or replacements do not deviate the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A locking structure, characterized in that: A main shaft applied to a photovoltaic support (10) comprises: Box body (110); An active member (120) is at least partially located in the box body (110) and is provided with a first clamping portion (121) and at least two shifting portions (122) arranged at intervals along the circumference of the active member (120); The driven member (130) is at least partially located in the box body (110) and is provided with a second clamping portion (1311); the first clamping portion (121) and the second clamping portion (1311) in a plugged state have a first gap (1213) along the circumferential direction; a locking group, located between adjacent driving portions (122), comprising at least two locking members (141) and an elastic member (142) connected between the two locking members (141); the locking members (141) are located between the box body (110) and the driven member (130); the elastic member (142) is used to drive the locking members (141) to a locking position, so that the locking members (141) in the locking position prevent the driven member (130) from rotating relative to the locking members (141) along the circumferential direction; The active member (120) is configured to be operably rotated to push the locking member (141) to deviate from the locking position through the toggle portion (122) until the first clamping portion (121) abuts against the second clamping portion (1311), thereby driving the driven member (130) to rotate.

2. The locking structure according to claim 1, characterized in that: The first clamping portion (121) comprises a clamping block (1211), and the second clamping portion (1311) comprises a clamping groove for the clamping block (1211) to pass through.

3. The locking structure according to claim 2, characterized in that: The driven member (130) comprises a locking shaft (131) and a driven shaft (132) connected to the locking shaft (131), and the driven shaft (132) can be driven to rotate by the locking shaft (131).

4. The locking structure according to claim 3, characterized in that: The clamping groove is formed on the locking shaft (131), and the driven shaft (132) is provided with a plug-in column (1321), wherein the plug-in column (1321) is used for plugging and matching with the clamping groove.

5. The locking structure according to claim 4, characterized in that: The clamping blocks (1211) include two, and the two clamping blocks (1211) are arranged at intervals along the circumferential direction, and the two surround an avoidance groove (1212) for the insertion column (1321) to pass through.

6. The locking structure according to claim 1, characterized in that: The first clamping portion (121) is located in the central area of ​​the active member (120), and the second clamping portion (1311) is located in the central area of ​​the driven member (130).

7. The locking structure according to claim 1, characterized in that: When the locking member (141) is in the locking position, the locking member (141) and the shifting portion (122) have a second gap along the circumferential direction, and the second gap is smaller than the first gap (1213).

8. The locking structure according to claim 7, characterized in that: Between adjacent toggling parts (122) and elastic members (142), along the circumferential direction and along the direction in which the elastic member (142) points toward the toggling part (122), the radial spacing between the driven member (130) and the box body (110) gradually decreases; When the locking member (141) is in the locking position, the radial spacing between the follower (130) and the box body (110) is equal to the diameter of the locking member (141).

9. The locking structure according to claim 1, characterized in that: A first bearing (151) is connected between the inner wall of the box body (110) and the active member (120); A second bearing (152) is connected between the inner wall of the box body (110) and the driven member (130).

10. The locking structure according to claim 9, characterized in that: The active member (120) is configured with a first stepped groove (123), and the first bearing (151) is located in the first stepped groove (123); The driven member (130) is configured with a second stepped groove (1322), and the second bearing (152) is located in the second stepped groove (1322).

11. The locking structure according to claim 1, characterized in that: The locking structure further comprises a first limiting member (161) connected to the box body (110); the first limiting member (161) abuts against one side of the active member (120) along its own axial direction to limit the active member (120) from moving along its own axial direction; The locking structure further comprises a second limiting member (162) connected to the box body (110); the second limiting member (162) abuts against the follower member (130) to limit the follower member (130) from moving along its own axial direction.

12. The locking structure according to claim 11, characterized in that: The first limiting member (161) comprises a first baffle (1611) connected to one side of the box body (110) along its own axial direction, and the first baffle (1611) abuts against one side of the active member (120) along its own axial direction; or The first limiting member includes a first retaining ring connected to the inner wall of the box body, and the first retaining ring abuts against one side of the active member along its own axial direction.

13. The locking structure according to claim 11, characterized in that: The second limiting member (162) comprises a second baffle (1621) connected to one side of the box body (110) along its own axial direction, and the second baffle (1621) abuts against one side of the follower (130) along its own axial direction; or The second stopper comprises a second retaining ring connected to the inner wall of the box, and the second retaining ring abuts against the driven member along the One side of its own axis.

14. The locking structure according to claim 1, characterized in that: The box body (110) comprises a mounting seat (111) and a spacer sleeve (112) sleeved in the mounting seat (111); at least parts of the locking group, the active member (120) and the driven member (130) are connected to the spacer sleeve (112).

15. The locking structure according to claim 1, characterized in that: The first clamping portion (121) in the plugged state is deflected by a preset angle along the circumferential direction and then abuts against the second clamping portion (1311).

16. A photovoltaic support, characterized in that: The invention comprises a first main shaft (210), a second main shaft (220), and a locking structure according to any one of claims 1 to 15 connected between the first main shaft (210) and the second main shaft (220); the first main shaft (210) and the second main shaft (220) are used for installing a photovoltaic module.

17. A photovoltaic system, characterized in that: It comprises the photovoltaic support (10) as claimed in claim 16 and a photovoltaic component installed on the photovoltaic support (10).

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