Photovoltaic tracking support and locking structure thereof

Abstract

The utility model relates to a photovoltaic tracking support and a locking structure thereof. The locking structure comprises a shell, a driving part, a driven part and a locking assembly. The driving part and the driven part are arranged in the shell, and the driving part can drive the driven part to rotate; the locking structure comprises a locking disc and at least one locking unit surrounding the periphery of the locking disc, the locking disc is coaxially connected with the end, close to the driving piece, of the driven piece, the locking unit comprises an elastic piece and two locking pieces, and the elastic piece is arranged between the two locking pieces; the locking assembly has a pre-locking state and a locking state, in the pre-locking state, the two ends, in the circumferential direction of the driven piece, of the elastic piece abut against the two locking pieces correspondingly, and gaps exist between the locking pieces and the locking disc and / or the shell, so that the situation that the two locking pieces are locked at the same time is avoided; in the locking state, the locking piece in the same locking unit abuts against the locking disc and the shell at the same time, and therefore the locking piece is locked.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of photovoltaic tracking support, in particular to a photovoltaic tracking support and a locking structure thereof. BACKGROUND

[0002] A photovoltaic tracking system is a device that can automatically adjust the angle of a photovoltaic module as the position of the sun changes. Its basic principle is to sense the position information of the sun, such as the altitude angle and azimuth angle of the sun, through a sensor, and then transmit this information to a controller. The controller drives a power mechanism to adjust the angle of the photovoltaic module according to the received signal, so that it always maintains a perpendicular or nearly perpendicular state with the sunlight. In this way, the maximum amount of solar radiation can be received, and the power generation of the photovoltaic system can be improved. In order to prevent the photovoltaic module from driving the power mechanism to deflect due to extreme weather such as strong winds, a locking structure is generally provided in the power mechanism.

[0003] The locking structure in the related art includes a shell and a plurality of pairs of locking pieces located in the shell. Each pair of locking pieces includes two locking pieces. The first locking piece in each pair of locking pieces is used to prevent the photovoltaic module from rotating clockwise due to external force, and the second locking piece in each pair of locking pieces is used to prevent the photovoltaic module from rotating counterclockwise due to external force.

[0004] However, under the action of extreme weather such as strong winds, the two locking pieces in each pair of locking pieces are prone to being stuck with the shell at the same time. In the subsequent process of driving the photovoltaic module to rotate to adjust the angle by the power mechanism, the photovoltaic module will drive all the locking pieces to rotate at the same time, so that all the locking pieces are sequentially disengaged from the stuck position.

[0005] Since the two locking pieces in each pair of locking pieces are stuck with the shell at the same time, the phenomenon of sequential sticking occurs when the photovoltaic module drives all the locking pieces to sequentially disengage from the stuck position. INVENTION CONTENTS

[0006] Therefore, it is necessary to provide a photovoltaic tracking support and a locking structure thereof to solve the problem that all the locking pieces are stuck and the phenomenon of sequential sticking occurs during the rotation of the power mechanism.

[0007] A locking structure, the locking structure comprising:

[0008] a shell;

[0009] a driving piece and a driven piece arranged in the shell, the driving piece being capable of driving the driven piece to rotate under the driving force of a power mechanism; and

[0010] The locking assembly comprises a locking disc coaxially connected with the follower near one end of the driving member, and at least one locking unit located between the outer circumferential side of the locking disc and the inner surface of the housing, wherein the locking unit comprises an elastic member and two locking members arranged along the circumference of the locking disc, and the elastic member is arranged between the two locking members;

[0011] The locking assembly has a pre-locking state and a locking state, and the rotation of the locking disc relative to the locking members can switch the locking assembly between the pre-locking state and the locking state;

[0012] In the pre-locking state of the locking assembly, the elastic member abuts against the two locking members on both sides in the circumferential direction of the locking disc, and the two locking members have a gap between the locking disc and / or the housing in the radial direction of the locking disc;

[0013] In the locking state of the locking assembly, the elastic member is in a natural state, and one of the locking members in the same locking unit abuts against the locking disc and the housing on both sides in the radial direction of the locking disc.

[0014] In one embodiment, at least one locking cavity is defined between the housing and the locking disc, and the locking unit is arranged in the corresponding locking cavity. In the same locking cavity, the radial distance between the locking disc and the housing gradually decreases along the elastic force direction of the elastic member.

[0015] In one embodiment, one end of the driving member is provided with at least two circumferentially spaced pawls, and the locking unit is located between the adjacent two pawls.

[0016] In the pre-locking state of the locking structure, each locking member abuts against the pawl.

[0017] In one embodiment, the locking member is a roller, the elastic member has a connecting wall and elastic walls arranged on both sides of the connecting wall in the circumferential direction, the elastic walls have a circular arc structure, and the curvature of the elastic walls is adapted to the curvature of the corresponding roller.

[0018] In one embodiment, one end of the driving member is provided with a first clamping structure, and the follower or the locking disc is provided with a second clamping structure, and the first clamping structure and the second clamping structure are gap-fitted in the radial direction.

[0019] In one embodiment, the first clamping structure is located at the center of the driving member, and the second clamping structure is located at the center of the follower.

[0020] One of the first clamping structure and the second clamping structure is a non-circular clamping block, and the other is a non-circular hole, and the non-circular clamping block is inserted into the non-circular hole.

[0021] In one of the embodiments, the first clamping structure is a non-circular clamping block, a circular hole is formed on the non-circular clamping block, and the non-circular hole is formed on the locking disc, a transmission shaft is arranged on the driven part, and the transmission shaft is inserted into the circular hole through the non-circular hole.

[0022] In one of the embodiments, the number of the first clamping structure and the second clamping structure is at least two respectively.

[0023] One of the first clamping structure and the second clamping structure is a pin shaft, and the other is a pin hole, and the pin shaft is inserted into the corresponding pin hole.

[0024] In one of the embodiments, a limiting hole is formed at the position of the shaft center of one of the driving part and the driven part, and a limiting shaft is arranged on the other, and the limiting shaft is inserted into the limiting hole.

[0025] A photovoltaic tracking support, comprising a first main beam, a second main beam, and a locking structure connected between the first main beam and the second main beam.

[0026] The first main beam is connected with the driving part, the second main beam is connected with the driven part, and the first main beam and the second main beam are used for mounting a photovoltaic module.

[0027] In the pre-locking state of the locking assembly of the photovoltaic tracking support and the locking structure thereof, the elastic member abuts against the two locking members respectively at the two ends in the circumferential direction of the driven part, and there is a gap between the locking member and the locking disc and / or the shell. At this time, when a clockwise torque is applied to the photovoltaic module, the photovoltaic module drives the locking disc to rotate clockwise through the driven part, the first locking member is locked between the shell and the locking disc, and at this time, the elastic member is in a natural state, i.e., the elastic member does not have a pushing force on the first locking member, and the gap between the second locking member and the shell and the locking disc is increased. When an anticlockwise torque is immediately applied to the photovoltaic module, the photovoltaic module drives the locking disc to rotate anticlockwise through the driven part, so that the second locking member is locked. Since the first locking member does not receive the force of the elastic member, the first locking member is unlocked, i.e., the two locking members are not locked at the same time, thereby avoiding the phenomenon that the locking members are sequentially locked and then sequentially unlocked. BRIEF DESCRIPTION OF DRAWINGS

[0028] Figure 1 It is a structural schematic view of the locking structure in one embodiment.

[0029] Figure 2 Figure 6 is an exploded view of the locking structure without the shell according to an embodiment.

[0030] Figure 3 Figure 7 is a cross-sectional view of the locking structure according to an embodiment.

[0031] Figure 4 Figure 8 is a structure view of the shell according to an embodiment. Figure 3 Figure 9 is a structure view of the shell according to an embodiment.

[0032] Figure 5 Figure 10 is a structure view of the shell according to an embodiment. Figure 3 Figure 11 is a structure view of the shell according to an embodiment.

[0033] Figure 6 Figure 12 is an exploded view of the locking structure without the shell according to another embodiment.

[0034] Figure 7 Figure 13 is a structure view of the locking unit according to another embodiment.

[0035] 100, shell; 110, driving member; 111, pawl; 120, driven member; 130, locking cavity; 200, locking assembly; 210, locking disc; 220, locking unit; 221, locking member; 221a, first locking member; 221b, second locking member; 222, elastic member; 2221, elastic wall; 2222, connecting wall; 310, first clamping structure; 311, circular hole; 320, second clamping structure; 330, transmission shaft; 340, limiting hole; 350, limiting shaft. DETAILED DESCRIPTION

[0036] In order to make the above objectives, features and advantages of the present application more apparent, specific embodiments of the present application will be described in detail below with reference to the accompanying drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present application. It will be apparent, however, to one skilled in the art that the present application can be practiced in a variety of ways beyond the specific embodiments described herein without departing from the spirit of the present application, and it is intended that the present application cover all modifications and variations of this application within the scope of the appended claims.

[0037] In the description of the present application, it should be understood that, if the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like appear, these terms indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the purpose of facilitating the description of the present application and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application.

[0038] In addition, the terms "first", "second", and the like, if any, are used herein for descriptive purposes only and should not be construed as indicating or implying relative importance or identifying the number of the indicated technical features. Thus, a feature defined with "first" or "second" can include at least one of the feature explicitly or implicitly. In the description of the present application, if the term "plurality" appears, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise explicitly specified and limited.

[0039] In the present application, unless otherwise explicitly specified and limited, if the terms "mounting", "connecting", "connecting", "fixing" and the like appear, these terms should be interpreted broadly. For example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the internal communication of two elements or the interaction relationship between two elements, unless otherwise explicitly limited. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0040] In the present application, unless otherwise explicitly specified and limited, if the first feature is described as "on" or "under" the second feature, etc., it can mean that the first and second features are in direct contact, or the first and second features are indirectly in contact through an intermediate medium. Moreover, the first feature "above", "above" and "above" the second feature can be the first feature directly above or obliquely above the second feature, or it can only mean that the first feature is higher than the second feature in horizontal height. The first feature "below", "below" and "below" the second feature can be the first feature directly below or obliquely below the second feature, or it can only mean that the first feature is lower than the second feature in horizontal height.

[0041] It should be noted that if an element is referred to as "fixed to" or "disposed on" another element, it can be directly on another element or there can be a middle element. If an element is considered to be "connected" to another element, it can be directly connected to another element or there can be a middle element. If present, the terms "vertical", "horizontal", "up", "down", "left", "right" and similar expressions used in the present application are only for illustrative purposes and do not represent the only implementation.

[0042] In the prior art, a plurality of pairs of locking members are arranged in the locking structure, and an elastic member is arranged between two locking members of each pair. When the power mechanism is in a static state, each elastic member is used to push the corresponding two locking members, so that all the locking members are in a locked state, wherein the first locking member of each pair is used to prevent the photovoltaic module from rotating clockwise due to an external force, and the second locking member of each pair is used to prevent the photovoltaic module from rotating counterclockwise due to an external force.

[0043] If a clockwise torque is applied to the photovoltaic module after the first locking member is stuck, and then a counterclockwise torque is immediately applied, the first locking member is still stuck due to the elastic member still abutting against the first locking member. However, the second locking member is also stuck due to the application of the counterclockwise torque. During the rotation of the photovoltaic module driven by the power mechanism, the stuck locking members will be sequentially disengaged from the stuck positions, thereby causing a jamming phenomenon.

[0044] Referring to Figures 1-4 The locking structure provided by an embodiment of the present application includes a housing 100, a driving member 110, a driven member 120, and a locking assembly. The driving member 110 and the driven member 120 are arranged in the housing 100, and the driving member 110 can drive the driven member 120 to rotate under the driving force of a power mechanism. The locking assembly 200 includes a locking disc 210 and at least one locking unit 220. The locking disc 210 is coaxially connected to one end of the driven member 120 close to the driving member 110, and the locking unit 220 is located between the outer circumferential side of the locking disc 210 and the inner circumferential surface of the housing 100. The locking unit 220 includes an elastic member 222 and two locking members 221, and the elastic member 222 is arranged between the two locking members 221. The locking assembly 200 has a pre-locked state and a locked state, and the rotation of the locking disc 210 relative to the locking member 221 can switch the locking assembly 200 between the pre-locked state and the locked state. When the locking assembly 200 is in the pre-locked state, the elastic member 222 abuts against the two locking members 221 along the two ends of the driven member 120 in the circumferential direction, and there is a gap between the two locking members 221 and the locking disc 210 and / or the housing 100 along the two sides of the locking disc in the radial direction. When the locking assembly 200 is in the locked state, the elastic member 222 is in a natural state, and the locking member 221 in the same locking unit 220 abuts against the locking disc 210 and the housing 100 along the two sides of the locking disc 210 in the radial direction.

[0045] It should be noted that the pre-locking state of the locking assembly 200 can be a static state of the locking structure, at this time, the elastic member 222 is in abutment with the two locking members 221 at the two ends of the driven member 120 in the circumferential direction, so that there is a gap between the locking member 221 and the locking disc 210, or there is a gap between the locking member 221 and the housing 100, or there is a gap between the locking member 221 and the locking disc 210 and the housing 100, that is, the locking member 221 does not lock the locking disc 210 and the housing 100. When the locking disc 210 rotates relative to the locking member 221 by a predetermined angle, the locking member 221 is locked, that is, the torque is blocked at the locking structure.

[0046] In the embodiment, the locking disc 210 is arranged at one end of the driven member 120 close to the driving member 110, and the locking disc 210 is coaxially connected with the driven member 120, and the locking unit 220 is arranged between the locking disc 210 and the housing 100. When the locking member 221 is in abutment with the locking disc 210 and the housing 100 at the inner and outer sides of the driven member 120 in the axial direction, the friction between the locking member 221 and the locking disc 210 and the housing 100 prevents the driven member 120 from rotating relative to the housing 100, so that the torque is blocked at the locking structure, that is, the external force is prevented from causing the photovoltaic assembly to rotate.

[0047] In the pre-locking state of the locking assembly 200 in the application, the elastic member 222 is in abutment with the two locking members 221 at the two ends of the driven member 120 in the circumferential direction, and there is a gap between the locking member 221 and the locking disc 210 and / or the housing 100. At this time, when a clockwise torque is applied to the photovoltaic assembly, the photovoltaic assembly drives the locking disc 210 to rotate clockwise through the driven member 120, and the first locking member 221a is stuck between the housing 100 and the locking disc 210, while the elastic member 222 is in a natural state, that is, the elastic member 222 does not have a pushing force on the first locking member 221a, and the gap between the second locking member 221b and the housing 100 and the locking disc 210 increases. When an anticlockwise torque is immediately applied to the photovoltaic assembly, the photovoltaic assembly drives the locking disc 210 to rotate anticlockwise through the driven member 120, so that the second locking member 221b is stuck. Since the first locking member 221a does not receive the force of the elastic member 222, the first locking member 221a is unlocked, that is, the two locking members 221 are not locked at the same time, thereby avoiding the phenomenon that the locking members are stuck in turn when they are separated from the locking position one by one.

[0048] In some embodiments, in combination with Figure 4The shell 100 and the locking disc 210 define at least one locking cavity 130, and the locking unit 220 is arranged in the corresponding locking cavity 130. In the same locking cavity 130, the radial distance between the locking disc 210 and the shell 100 gradually decreases along the elastic force direction of the elastic member 222.

[0049] The outer periphery of the locking disc 210 is regularly shaped as a curved surface, so that in the same locking cavity 130, the radial distance between the locking disc 210 and the shell 100 gradually decreases along the elastic force direction of the elastic member 222. In this way, when the driven member 120 drives the locking disc 210 to rotate, the locking member 221 moves between the locking disc 210 and the shell 100. When the locking member 221 simultaneously abuts against the locking disc 210 and the shell 100, that is, the locking member 221 locks the locking disc 210 relative to the shell 100, the driven member 120 is locked.

[0050] Specifically, the shell 100 and the locking disc 210 define a plurality of locking cavities 130 arranged in sequence along the circumference, and each locking cavity 130 is provided with a locking unit 220. Each locking unit 220 includes two locking members 221 and an elastic member 222 arranged between the two locking members 221. Of course, each locking unit 220 can also include a plurality of locking members 221, and the plurality of locking members 221 are divided into two groups, and the two groups of locking members 221 are respectively located on the two sides of the elastic member 222 along the circumference. For example, the number of locking members 221 in one group is three, and the number of locking members 221 in the other group is two. Preferably, the number of locking members 221 in the two groups is equal.

[0051] In some embodiments, one end of the driving member 110 is provided with at least two pawls 111 spaced apart along the circumference, and the locking unit 220 is located between the two adjacent pawls 111. In the pre-locking state, each locking member 221 abuts against the pawl.

[0052] In the embodiment, the locking units 220 are located between two adjacent pawls 111, and each locking piece 221 abuts against the pawl 111, i.e., the pawl 111 is used to limit the distance between the two locking pieces 221 in the same locking unit 220. At the same time, since the radial distance between the locking disc 210 and the shell 100 gradually decreases along the elastic force direction of the elastic piece 222 in the same locking cavity 130, when the distance between two adjacent pawls 111 is smaller, the two locking pieces 221 in the same locking unit 220 are closer to the elastic piece 222, and the distance between the corresponding shell 100 and the locking disc 210 is larger, and the locking piece 221 is less likely to be stuck. In the pre-locking state, each locking piece 221 abuts against the pawl 111, and by controlling the distance between two adjacent pawls 111, the locking piece 221 and the locking disc 210 and / or the shell 100 can have a gap in the pre-locking state.

[0053] Specifically, the locking piece 221 is a roller, and in the same locking cavity 130, there are two positions between the shell 100 and the locking disc 210, and the distance between the two positions is equal to the diameter of the roller. The distance between two adjacent pawls is smaller than the sum of the distance between the two positions and the diameter of the roller.

[0054] In some embodiments, in combination with Figure 7 , the locking piece 221 is a roller, and the elastic piece 222 has a connecting wall 2222 and elastic walls 2221 arranged on both sides of the connecting wall 2222 in the circumferential direction, the elastic walls 2221 are in a circular arc structure, and the radius of the elastic walls 2221 is adapted to the radius of the corresponding roller.

[0055] In actual use, the radius of the elastic wall 2221 is adapted to the radius of the corresponding roller, which improves the stability of the locking structure. In addition, the elastic piece 222 can be fixed on the locking disc 210 through the connecting wall 2222 to prevent the position of the elastic piece 222 in the locking cavity 130 from shifting and affecting the stability of the locking structure.

[0056] In other embodiments, the elastic piece 222 can also be a V-shaped elastic sheet.

[0057] In some embodiments, in combination with Figure 2 , Figure 3 and Figure 5 , one end of the driving piece 110 is provided with a first clamping structure 310, and the driven piece 120 or the locking disc 210 is provided with a second clamping structure 320, and the first clamping structure 310 and the second clamping structure 320 are matched in the radial gap.

[0058] In the embodiment, the driven member 120 is fixedly connected with the locking disc 210, and specifically, the locking disc 210 is fixedly connected with the driven member 120 through bolts. Therefore, the second clamping structure 320 can be arranged on the driven member 120 or the locking disc 210. The first clamping structure 310 and the second clamping structure 320 are in radial clearance fit, that is, the driving member 110 can drive the driven member 120 to rotate only after the driving member 110 rotates by a preset angle. During the rotation of the driving member 110 within the preset angle range, the locking member 221 is first pushed by the pawl 111, so that the locking disc 210 is unlocked. After the unlocking, the driving member 110 can drive the driven member 120 to rotate.

[0059] It should be emphasized that, in combination with Figure 3 and Figure 5 , the first clamping structure 310 and the second clamping structure 320 are in radial clearance fit, which can be understood as follows: when the first clamping structure 310 is a rectangular block and the second clamping structure 320 is a rectangular slot, the width of the rectangular block is less than the width of the rectangular slot, so that the driving member 110 drives the driven member 120 to rotate after the locking disc 210 is unlocked.

[0060] In some embodiments, the first clamping structure 310 is located at the shaft center position of the driving member 110, and the second clamping structure 320 is located at the shaft center position of the driven member 120; one of the first clamping structure 310 and the second clamping structure 320 is a non-circular clamping block, and the other is a non-circular hole, and the non-circular clamping block is inserted into the non-circular hole. For example, the non-circular clamping block is a rectangular block, a trapezoidal block or a triangular block, and the non-circular hole is a rectangular hole, a trapezoidal hole or a triangular hole.

[0061] In one embodiment, the first clamping structure 310 is a non-circular clamping block, and the second clamping structure 320 is a non-circular hole, and the non-circular clamping block is inserted into the non-circular hole.

[0062] In combination with Figure 2 , further, the first clamping structure 310 is a non-circular clamping block, a circular hole 311 is arranged on the non-circular clamping block, a non-circular hole is arranged on the locking disc 210, and a transmission shaft 330 is arranged on the driven member 120, and the transmission shaft 330 passes through the non-circular hole and is inserted into the circular hole 311.

[0063] In the embodiment, a non-circular clamping block is arranged at the shaft center position of the driving member 110, and the non-circular clamping block is used for being inserted into a non-circular hole on the locking disc 210, so as to realize the transmission of the torque from the driving shaft to the driven shaft. Meanwhile, a circular hole 311 is arranged on the non-circular clamping block, and a transmission shaft on the driven member 120 passes through the non-circular hole and is inserted into the circular hole 311, so as to ensure the coaxiality of the driving shaft and the driven shaft. Specifically, the non-circular clamping block can be a rectangular clamping block, the non-circular hole can be a rectangular hole, and the rectangular clamping block is inserted into the rectangular hole, so as to transmit the torque of the driving member 110 to the driven member 120.

[0064] In another embodiment, the second clamping structure 320 is a non-circular clamping block, and the first clamping structure 310 is a non-circular hole, and the non-circular clamping block is inserted into the non-circular hole.

[0065] In some other embodiments, in combination Figure 6 , the number of the first clamping structure 310 and the second clamping structure 320 is at least two respectively; one of the first clamping structure 310 and the second clamping structure 320 is a pin shaft, and the other is a pin hole, and the pin shaft is inserted into the corresponding pin hole. The hole diameter of the pin hole is greater than the outer diameter of the pin shaft.

[0066] In the embodiment, the number of the pin shafts is at least two, and the at least two pin shafts are used to transmit torque. The axis of the driving member 110 is provided with a limiting hole 340, and the axis of the driven shaft is provided with a limiting shaft 350, and the limiting shaft 350 is inserted into the limiting hole 340, so as to ensure the coaxiality of the driving member 110 and the driven member 120.

[0067] Specifically, the number of the pin shafts is three, and the three pin shafts are located at three corners of an equilateral triangle with the axis as the center.

[0068] In the embodiment, the three pin shafts are located at three corners of an equilateral triangle with the axis as the center, and the three pin shafts are used to ensure the uniformity and stability of torque transmission, so as to improve the transmission efficiency of torque.

[0069] An embodiment of the present application also discloses a photovoltaic tracking support, which comprises a first main beam, a second main beam, and a locking structure connected between the first main beam and the second main beam; the first main beam is connected with the driving member 110, the second main beam is connected with the driven member 120, and the first main beam and the second main beam are used to mount photovoltaic modules.

[0070] The photovoltaic tracking support further comprises a power mechanism connected with the first main beam. When the photovoltaic tracking support normally operates, the rotating power of the power mechanism is transmitted to the second main beam through the first main beam and the locking structure, so as to realize the synchronous rotation of the first main beam and the second main beam, and further ensure the orientation consistency of the plurality of photovoltaic modules mounted on the first main beam and the second main beam, and ensure the photovoltaic power generation efficiency. When an external force acts on the second main beam, the torque is blocked at the locking structure, so as to reduce the risk that the torque is transmitted to the power mechanism through the first main beam and affects the use reliability of the power mechanism, improve the torsional performance of the photovoltaic support, and further ensure the photovoltaic power generation rate. Through the cooperation of the locking structure and the driving unit, the torque holding points of the photovoltaic support are increased from one to multiple, so that the wind resistance of the entire photovoltaic support is significantly improved.

[0071] Any combination of the technical features in the above-described embodiments can be made, and for the sake of brevity, not all possible combinations are described, however, it is to be understood that the application embraces all such possible combinations.

[0072] The above-described embodiments only express several implementation manners of the application, and the description is relatively specific and detailed, but it should not be understood as a limitation on the patent scope of the application. It should be pointed out that for ordinary skilled persons in the art, some modifications and improvements can be made without departing from the concept of the application, and these all belong to the protection scope of the application. Therefore, the patent protection scope of the application should be subject to the appended claims.

Claims

1. A locking structure, characterized in that, The locking structure includes: case; An active member and a driven member are disposed within the housing, wherein the active member can drive the driven member to rotate under the driving force of the power mechanism; and A locking assembly includes a locking disc and at least one locking unit. The locking disc is coaxially connected to one end of the driven member near the driving member. The locking unit is located between the outer peripheral side of the locking disc and the inner surface of the housing. The locking unit includes an elastic element and two locking members arranged circumferentially along the locking disc. The elastic element is disposed between the two locking members. The locking assembly has a pre-locked state and a locked state, and the locking disc can rotate relative to the locking member to switch the locking assembly between the pre-locked state and the locked state. When the locking assembly is in the pre-locked state, the elastic element abuts against the two locking elements on both sides of the circumferential direction of the locking disc, and there are gaps between the two locking elements and the locking disc and / or the housing on both sides of the radial direction of the locking disc. When the locking assembly is in the locked state, the elastic element is in the natural state, and one of the locking elements in the same locking unit abuts against the locking disc and the housing on both sides of the locking disc along the radial direction.

2. The locking structure according to claim 1, characterized in that, At least one locking cavity is defined between the housing and the locking disc, and the locking unit is disposed in the corresponding locking cavity. In the same locking cavity, the radial distance between the locking disc and the housing gradually decreases along the elastic force direction of the elastic element.

3. The locking structure according to claim 1, characterized in that, One end of the active component is provided with at least two circumferentially spaced pawls, and the locking unit is located between two adjacent pawls; When the locking structure is in the pre-locked state, each of the locking elements abuts against the pawl.

4. The locking structure according to claim 1, characterized in that, The locking element is a roller, and the elastic element has a connecting wall and elastic walls respectively disposed on both sides of the connecting wall along the circumferential direction. The elastic wall has an arc-shaped structure, and the curvature of the elastic wall is adapted to the curvature of the corresponding roller.

5. The locking structure according to claim 1, characterized in that, One end of the driving member is provided with a first snap-fit ​​structure, and the driven member or the locking disc is provided with a second snap-fit ​​structure. The first snap-fit ​​structure and the second snap-fit ​​structure are radially clearance-fitted.

6. The locking structure according to claim 5, characterized in that, The first snap-fit ​​structure is located at the axial center of the driving member, and the second snap-fit ​​structure is located at the axial center of the driven member; One of the first snap-fit ​​structure and the second snap-fit ​​structure is a non-circular snap-fit ​​block, and the other is a non-circular hole. The non-circular snap-fit ​​block is inserted into the non-circular hole.

7. The locking structure according to claim 6, characterized in that, The first snap-fit ​​structure is a non-circular snap-fit ​​block, which has a circular hole. The locking disc also has the non-circular hole. The driven member is provided with a drive shaft, which passes through the non-circular hole and is inserted into the circular hole.

8. The locking structure according to claim 5, characterized in that, The number of the first snap-fit ​​structure and the number of the second snap-fit ​​structure are both at least two; One of the first snap-fit ​​structure and the second snap-fit ​​structure is a pin, and the other is a pin hole, with the pin inserted into the corresponding pin hole.

9. The locking structure according to claim 8, characterized in that, One of the driving member and the driven member has a limiting hole at its axial center, and the other is provided with a limiting shaft, which is inserted into the limiting hole.

10. A photovoltaic tracking bracket, characterized in that, The photovoltaic tracking bracket includes a first main beam, a second main beam, and a locking structure as described in any one of claims 1 to 8 connecting the first main beam and the second main beam; The first main beam is connected to the driving member, and the second main beam is connected to the driven member. The first main beam and the second main beam are used to install photovoltaic modules.

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