CN220421735U - Photovoltaic tracking bracket system - Google Patents

Abstract

A photovoltaic tracking bracket system comprises a main shaft, a synchronous shaft, a driving source and a transmission mechanism. The spindle has a cavity, and the spindle and the synchronizing shaft extend in a first direction and are spaced apart in a second direction. The transmission mechanism comprises N transmission mechanisms which are arranged at intervals in the first direction, wherein N is a positive integer greater than 1; the driving source is connected with a first transmission mechanism in the first direction, and every two adjacent transmission mechanisms are connected through the synchronous shaft. The transmission mechanism comprises two spindle head parts which are oppositely arranged, the spindle comprises a first plane wall, the spindle head parts comprise a second plane wall, the spindle head parts are inserted into a cavity of the spindle in a matched mode, the first plane wall is connected with the second plane wall through a fastening piece, and the first plane wall is attached to the second plane wall. The utility model reduces the damage of impact force to the shaft head part and the connecting hole of the main shaft.

Description

Photovoltaic tracking bracket system

Technical Field

The utility model relates to the field of photovoltaic supports, in particular to a photovoltaic tracking support system.

Background

At present, the driving end of a parallel driver of a photovoltaic tracking bracket is connected with a main shaft and used for driving the main shaft to rotate so as to drive a photovoltaic module arranged on the main shaft to rotate. Under the normal tracking state, the parallel driver needs to start and stop for many times every day, and the parallel driver can generate impact on the main shaft every time when the parallel driver is started and stopped, and the connection part of the driving end of the parallel driver and the main shaft bears larger moment, so that larger influence is caused on the connecting piece and the connecting hole on the main shaft. In order to reduce damage to the connector and spindle from impact forces during start-stop, improvements to the photovoltaic tracking bracket system are needed.

Disclosure of Invention

The utility model aims to provide a photovoltaic tracking bracket system, which reduces the damage of impact force to a main shaft when a parallel driver is started and stopped.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

the photovoltaic tracking bracket system comprises a main shaft, a synchronous shaft, a driving source and a transmission mechanism, wherein the main shaft is provided with a cavity, the main shaft and the synchronous shaft extend in a first direction and are spaced in a second direction, the first direction is perpendicular to the second direction, the transmission mechanism comprises N transmission mechanisms which are arranged at intervals in the first direction, and N is a positive integer greater than 1; the driving source is connected with a first transmission mechanism in the first direction, and every two adjacent transmission mechanisms are connected through the synchronous shaft; the transmission mechanism comprises two spindle head parts which are oppositely arranged, the spindle comprises a first plane wall, the spindle head parts comprise a second plane wall, the spindle head parts are inserted into a cavity of the spindle in a matched mode, the first plane wall is connected with the second plane wall through a fastening piece, and the first plane wall is attached to the second plane wall.

As a further improved technical solution of the present utility model, the first planar wall includes at least two, and the two first planar walls are symmetrical with respect to the axis of the spindle; the second planar walls include at least two, the two second planar walls being symmetrical about the axis of the head member, each first planar wall being in engagement with a corresponding second planar wall, each first planar wall and corresponding second planar wall being secured together by at least one of the fasteners.

As a further development of the utility model, the axial direction of the head part coincides with the axial direction of the main shaft, the head part having a first cross-sectional shape perpendicular to its own axial direction, the main shaft having a second cross-sectional shape perpendicular to its own axial direction, the first cross-sectional shape matching the second cross-sectional shape.

As a further improved technical scheme of the utility model, the second cross-sectional shape of the main shaft comprises a first straight line section, a second straight line section, a third straight line section, a fourth straight line section and a fifth straight line section which are connected end to end in the circumferential direction so as to form a closed structure; the main shaft takes the perpendicular bisectors of the third straight line segments as axisymmetric structures, the second straight line segments are symmetrically arranged with the fourth straight line segments, the first straight line segments are symmetrically arranged with the fifth straight line segments, and the second straight line segments and the fourth straight line segments are respectively and vertically connected with the third straight line segments.

As a further improved technical scheme of the utility model, the second cross-sectional shape of the main shaft comprises a first straight line segment, a second straight line segment, a third straight line segment, a first arc segment, a second arc segment and a third arc segment which are connected end to end in the circumferential direction so as to form a closed structure; the first arc line segment is connected between the second straight line segment and the third straight line segment, the second arc line segment is connected between the first straight line segment and the second straight line segment, the third arc line segment is connected between the first straight line segment and the third straight line segment, and the first arc line segment, the second arc line segment and the third arc line segment are three arcs distributed on the same circle.

As a further improved technical scheme of the utility model, a first hole is formed in the first plane wall, a second hole is formed in the second plane wall, and the fastener penetrates through the first hole and the second hole to fixedly connect the shaft head component and the main shaft.

As a further improved technical scheme of the utility model, the first direction is a left-right direction, and the second direction is an up-down direction; each transmission mechanism comprises a shell and a transmission assembly, a containing cavity is formed in the shell, the transmission assembly comprises a first transmission piece, a second transmission piece, a third transmission piece and a fourth transmission piece which are positioned in the containing cavity and are sequentially meshed and connected in a transmission mode in the second direction, the first transmission piece is positioned at the lowest part of the transmission assembly, the fourth transmission piece is positioned at the uppermost part of the transmission assembly, the shaft head component is mounted on the end face of the fourth transmission piece, and the shaft head component protrudes out of the shell and is used for being connected with the main shaft.

As a further improved technical scheme of the utility model, the driving source is provided with an output shaft; the first transmission piece comprises a first transmission shaft, two ends of the first transmission shaft are respectively and coaxially connected with the output shaft and the synchronizing shaft, and the first transmission shaft, the output shaft and the synchronizing shaft are parallel to the shaft head component.

As a further improved technical scheme of the utility model, one end of the first transmission shaft, which is close to the output shaft, is a power input end which is exposed out of the shell and is directly or indirectly connected with the driving source; the one end that first transmission shaft kept away from the output shaft is the power take off end, the power take off end expose in the casing is outside and with the synchronizing shaft is connected.

As a further improved technical scheme of the utility model, the first transmission shaft is connected with the synchronous shaft through a shaft sleeve, the shaft sleeve is fixedly sleeved on the periphery of the power input end and/or the power output end, and the synchronous shaft is fixedly sleeved on the periphery of the shaft sleeve.

As a further improved technical scheme of the utility model, the second transmission member is meshed above the first transmission member, the first transmission member comprises a first helical gear part, the second transmission member comprises a second helical gear part, and the first helical gear part is meshed with the second helical gear part to realize the first reversing of the power transmission in the second direction; the fourth transmission piece is meshed above the third transmission piece, the third transmission piece comprises a threaded portion, the fourth transmission piece comprises a toothed portion, and the threaded portion is meshed with the toothed portion to realize second reversing of power transmission in a second direction.

As a further improved technical scheme of the utility model, the third transmission member is meshed above the second transmission member, the second transmission member comprises a first externally hung gear part, the third transmission member comprises a second externally hung gear part, the first externally hung gear part is meshed with the second externally hung gear part, and the number of teeth of the first externally hung gear part is smaller than that of teeth of the second externally hung gear part.

Compared with the prior art, the transmission mechanism of the photovoltaic tracking bracket system comprises two shaft head parts, wherein the shaft head parts comprise second planar walls matched with the first planar walls of the main shaft, namely the main shaft and the shaft head parts respectively comprise the planar walls, when the shaft head parts are matched and inserted into the cavity of the main shaft, the first planar walls are attached to the second planar walls, so that impact force generated by starting and stopping of a motor acts on the plane of the main shaft, and the impact force generated by starting and stopping of the parallel driver causes less damage to the connecting holes of the shaft head parts and the main shaft due to the planar matching relation between the shaft head parts and the main shaft.

Drawings

FIG. 1 is a perspective assembly view of the photovoltaic tracking bracket system of the present utility model;

FIG. 2 is an enlarged view of portion A of FIG. 1;

FIG. 3 is a perspective assembly view of the photovoltaic tracking bracket system of the present utility model of FIG. 1 with portions of the photovoltaic module removed;

FIG. 4 is an enlarged view of portion B of FIG. 3;

FIG. 5 is a perspective view of the drive source and its driven transmission mechanism in the photovoltaic tracking bracket system of the present utility model;

FIG. 6 is an exploded perspective view of the photovoltaic tracking bracket system of the present utility model, wherein the drive source is connected with the transmission assembly driven by the drive source and the transmission assembly is connected with the synchronizing shaft through a shaft sleeve;

FIG. 7 is an exploded perspective view of the connection between a drive assembly and two adjacent synchronization shafts in the photovoltaic tracking bracket system of the present utility model, all via a bushing;

FIG. 8 is an exploded perspective view of the drive mechanism in the photovoltaic tracking bracket system of the present utility model with the drive assembly separated from its housing;

FIG. 9 is a perspective view of a spindle and drive mechanism combination in the photovoltaic tracking bracket system of the present utility model;

fig. 10 is an enlarged view of a portion C in fig. 9;

FIG. 11 is an exploded perspective view of the spindle and drive mechanism of the photovoltaic tracking bracket system of the present utility model;

FIG. 12 is an enlarged view of portion D of FIG. 11;

FIG. 13 is a front view of the housing of the drive mechanism in the photovoltaic tracking bracket system of the present utility model;

FIG. 14 is a cross-sectional view taken along line E-E of FIG. 13, i.e., a cross-sectional view of the head assembly;

FIG. 15 is a front view of a spindle in the photovoltaic tracking bracket system of the present utility model;

FIG. 16 is a cross-sectional view taken along line F-F of FIG. 15, i.e., a cross-sectional view of the spindle;

FIG. 17 is a cross-sectional view of another embodiment of a head assembly similar to FIG. 14;

fig. 18 is a cross-sectional view of another embodiment of a spindle similar to fig. 16.

Detailed Description

Exemplary embodiments of the present utility model will be described in detail below with reference to the accompanying drawings. If there are several specific embodiments, the features in these embodiments can be mutually exclusive without conflict. When the description refers to the accompanying drawings, the same numbers in different drawings denote the same or similar elements, unless otherwise specified. What is described in the following exemplary embodiments does not represent all embodiments consistent with the utility model; rather, they are merely examples of apparatus, articles, and/or methods that are consistent with aspects of the utility model as set forth in the claims.

The terminology used in the present utility model is for the purpose of describing particular embodiments only and is not intended to limit the scope of the present utility model. As used in the specification and claims of the present utility model, the singular forms "a," "an," or "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise.

It should be understood that words such as "first," "second," and the like, used in the description and in the claims of the present utility model, do not denote any order, quantity, or importance, but rather are names used to distinguish one feature from another. Likewise, the terms "a" or "an" and the like do not denote a limitation of quantity, but rather denote the presence of at least one. Unless otherwise indicated, the terms "front", "rear", "upper", "lower", "left", "right", and the like are used herein for convenience of description and are not limited to a particular location or a spatial orientation. The word "comprising" or "comprises", and the like, is an open-ended expression, meaning that elements appearing before "comprising" or "including", encompass the elements appearing after "comprising" or "including", and equivalents thereof, and not exclude that elements appearing before "comprising" or "including", may also include other elements. In the present utility model, if "several" are present, the meaning of two and more, and if "several" are present, the meaning of three and more.

Referring to fig. 1 to 16, a photovoltaic tracking bracket system includes a main shaft 1, a synchronizing shaft 2, a driving source 3 and a transmission mechanism 4 (the transmission mechanism 4 is commonly referred to as a parallel driver in the industry). The interior of the spindle 1 is hollow so as to have a cavity 10. The main shaft 1 and the synchronizing shaft 2 extend in a first direction and are spaced apart in a second direction, said first direction being perpendicular to said second direction. The transmission mechanism 4 includes N numbers arranged side by side in the first direction, where N is a positive integer greater than 1. The drive source 3 is connected to a first transmission 4 in the first direction, and each two adjacent transmissions 4 are connected by a synchronizing shaft 2. N-level transmission (for example, when N is 5, the photovoltaic tracking bracket system is 5-level transmission in the first direction) is multipoint driving, so that wind pressure and wind torsion are dispersed, and the stability of the photovoltaic tracking bracket system is greatly improved. In the present utility model, the first direction refers to the left-right direction shown in fig. 1, and the second direction refers to the up-down direction shown in fig. 1.

Specifically, referring to fig. 8, each parallel driver, namely, the transmission mechanism 4, includes a housing 41 and a transmission assembly 42. The interior of housing 41 defines a receiving chamber 40 and a drive assembly 42 includes a plurality of interengaged components (described in greater detail below) disposed within receiving chamber 40. The housing 41 includes a main body portion 410 and two axle head members 411, the axle head members 411 being disposed opposite each other on either side of the main body portion 410. The provision of the transmission assembly 42 inside the housing 41 facilitates, on the one hand, the positioning of the transmission mechanism 4 on the upright 400 and, on the other hand, the connection between the transmission assembly 42 and the other elements driven by it (main shaft 1 and synchronizing shaft 2). By the engagement between the various components of the transmission assembly 42, the impact force generated by frequent start and stop of the transmission mechanism 4 is absorbed, reducing the impact force on the spindle 1.

Still further, referring to fig. 9-16, spindle 1 includes a first planar wall 11, head member 411 includes a second planar wall 4111, head member 411 is matingly inserted into cavity 10 of spindle 1, first planar wall 11 is coupled to second planar wall 4111 by fastener 5, and first planar wall 11 is in conforming engagement with second planar wall 4111. Specifically, the first planar walls 11 include at least two, and the two first planar walls 11 are symmetrical with respect to the axis of the spindle 1; second planar wall 4111 includes at least two, with second planar wall 4111 being symmetrical about an axis of head member 411. Each first planar wall 11 is attached to the corresponding second planar wall 4111, and each first planar wall 11 and the corresponding second planar wall 4111 are fastened by at least one fastener 5. Since the shaft head part 411 and the main shaft 1 comprise at least one matched set of plane walls, impact force generated by starting and stopping of the motor acts on the plane of the main shaft 1, namely, the shaft head part 411 is used as a connecting piece fixedly connected with the main shaft 1 in the utility model, the shaft head part 411 and the main shaft 1 are provided with holes for the fasteners 5 to pass through, and the impact force generated by starting and stopping of the parallel driver in the utility model reduces damage to the connecting holes of the shaft head part 411 and the main shaft 1 due to the plane matching relation between the shaft head part 411 and the main shaft 1. In particular, the two first planar walls 11 symmetrically arranged are fastened by the fastener 5 after being attached to the corresponding second planar wall 4111, so that the eccentric torque can be reduced, and the vibration of the spindle 1 can be reduced more advantageously.

Referring to fig. 1 to 4, 8 and 12, the axial direction of the head member 411 coincides with the axial direction of the spindle 1, the head member 411 has a first cross-sectional shape perpendicular to its own axial direction, and the spindle 1 has a second cross-sectional shape perpendicular to its own axial direction, the first cross-sectional shape being matched with the second cross-sectional shape with the purpose of: after the shaft head part 411 extends into the spindle 1 and in a state that the spindle 1 is connected with each transmission mechanism 4 (parallel driver), the connection position of the spindle 1 and each transmission mechanism 4 has a perfectly matched plane contact effect, and when the parallel driver transmits power upwards, the damage of the impact force to the shaft head part 411 and the spindle 1 can be reduced to the greatest extent due to the plane matching relation between the shaft head part 411 and the spindle 1.

In an alternative embodiment, the first cross-sectional shape of the head member 411 and the second cross-sectional shape of the spindle 1 are each a polygon, each side of which is a straight line segment. Referring to fig. 16, the second cross-sectional shape of the spindle 1 includes a first straight line segment 101, a second straight line segment 102, a third straight line segment 103, a fourth straight line segment 104, and a fifth straight line segment 105 connected end to end in the circumferential direction to form a closed structure; the spindle 1 takes a perpendicular bisector of the third linear section 103 as an axisymmetric structure, the second linear section 102 and the fourth linear section 104 are symmetrically arranged, the first linear section 101 and the fifth linear section 105 are symmetrically arranged, and the second linear section 102 and the fourth linear section 104 are respectively and vertically connected with the third linear section 103; referring to fig. 14, corresponding to fig. 16, the first cross-sectional shape of the head member 411 is also a convex pentagon. In an alternative other embodiment, the first cross-sectional shape of the head member 411 and/or the second cross-sectional shape of the spindle 1 may also be "similar" pentagons, which specifically refer to: arc chamfer angles are arranged between two adjacent sides of the polygon, so that smaller areas at two ends of each side are bent, and the arc chamfer angles are also covered in the protection range that each side is a straight line segment. Fasteners 5 are provided on the planar walls of each side, and the fasteners 5 are used to connect and fix the head member 411 to the main axle 1.

In a second alternative embodiment, the first cross-sectional shape of the head member 411 and the second cross-sectional shape of the spindle 1 are both polygonal arcs, with one portion of the sides of the polygonal arcs being straight line segments and the other portion of the sides being arcuate line segments. Referring to fig. 18, the second cross-sectional shape of the spindle 1 includes a first straight line segment 101, a second straight line segment 102, a third straight line segment 103, a first arc segment 101', a second arc segment 102', and a third arc segment 103' connected end to end in the circumferential direction to form a closed structure; the first arc segment 101 'is connected between the second straight line segment 102 and the third straight line segment 103, the second arc segment 102' is connected between the first straight line segment 101 and the second straight line segment 102, the third arc segment 103 'is connected between the first straight line segment 101 and the third straight line segment 103, and the first arc segment 101', the second arc segment 102 'and the third arc segment 103' are three arcs distributed on the same circle. Referring to fig. 17, corresponding to fig. 18, the first cross-sectional shape of the head member 411 is also polygonal-arcuate. Of course, the polygonal arc is not limited to the shape described above in fig. 17 and 18, but may be other shapes. For example: the first cross-sectional shape of the head member 411 and/or the second cross-sectional shape of the spindle 1 may also be D-shaped, the D-shape including a straight line segment and an arcuate line segment, and thus the D-shape also belongs to one of polygonal arcs.

In both embodiments, it is sufficient that there are planar walls (corresponding to straight line segments in the first and second cross-sectional shapes) that match each other in all contact surfaces between the head member 411 and the spindle 1. Other contact surfaces than planar walls may be arcuate surfaces (corresponding to the arcuate segments in the first and second cross-sectional shapes). While the arcuate walls may also be matched, the planar walls provide a more reduced vibration of the spindle 1, i.e., the complete planar engagement between the head member 411 and the spindle 1 of the first embodiment provides a more reduced impact force on the spindle 1.

Referring to fig. 4, 14 and 16, the present utility model further includes a plurality of fasteners 5. The first planar wall 11 has a first aperture 112 and the second planar wall 4111 has a second aperture 4112, and the fastener 5 extends through the first aperture 112 and the second aperture 4112 to fixedly connect the head member 411 to the spindle 1. In the specific embodiment, the corresponding planar wall of each side is penetrated with a fastener 5, and the fastener 5 is used for connecting and fixing the shaft head part 411 and the main shaft 1 into a whole. In a specific embodiment, the fastener 5 is a bolt.

Referring to fig. 5 to 8, the transmission assembly 42 includes a first transmission member 421, a second transmission member 422, a third transmission member 423, and a fourth transmission member 424, that is, in the embodiment, the plurality of components in the transmission assembly 42 are four components. The first transmission member 421, the second transmission member 422, the third transmission member 423, and the fourth transmission member 424 are sequentially engaged in the second direction. The structure of the transmission assembly 42 is well known to those skilled in the art, and the present utility model will be described in detail below.

First, the drive source 3 has an output shaft 30. The driving source 3 drives the first transmission member 421 to rotate around the shaft and drive the synchronizing shaft 2, and power is transmitted to the next transmission mechanism 4 through the synchronizing shaft 2 in the first direction. The first transmission member 421 includes a first transmission shaft 4210, and both ends of the first transmission shaft 4210 are coaxially connected to the output shaft 30 and the synchronization shaft 2, respectively, and the first transmission shaft 4210, the output shaft 30, and the synchronization shaft 2 are parallel to the shaft head part 411. One end of the first transmission shaft 4210, which is close to the output shaft 30, is a power input end 4211, and the power input end 4211 is exposed out of the shell 41 and is directly or indirectly connected with the driving source 3; one end of the first transmission shaft 4210 away from the output shaft 30 is a power output end 4212, and the power output end 4212 is exposed out of the housing 41 and connected with the synchronizing shaft 2. For example: the transmission assembly 42 of the first stage has a first transmission member 421, the power input end 4211 of which is directly connected to the driving source 3; the transmission assembly 42 of the remaining other stages has a first transmission member 421, the power input 4211 of which is indirectly connected to the drive source 3.

It should be noted that, the first transmission shaft 4210 is connected to the synchronizing shaft 2 through a shaft sleeve 6, the shaft sleeve 6 is fixedly sleeved on the periphery of the power input end 4211 and/or the power output end 4212, and the synchronizing shaft 2 is fixedly sleeved on the periphery of the shaft sleeve 6 so as to be capable of transmitting power in the first direction. Specifically, referring to fig. 4, 6 and 7, a portion of the fastening member 5 passes through holes (holes are not numbered) on the shaft sleeve 6, the power input end 4211 and the synchronizing shaft 2, and another portion of the fastening member 5 passes through holes (holes are not numbered) on the shaft sleeve 6, the power output end 4212 and the synchronizing shaft 2, so that two ends of the first transmission member 421 are connected with the synchronizing shaft 2 through the shaft sleeve 6. The sleeve 6 has the function of reinforcing the strength of the connection between the synchronizing shaft 2 and the transmission mechanism 4, reducing the diameters of the power input end 4211 and the power output end 4212, reducing the size of the housing 41, reducing the cost, and facilitating the sealing between the power input end 4211 and the housing 41 and between the power output end 4212 and the housing 41.

Next, referring to fig. 8, the extending direction of the first transmission member 421 and the extending direction of the fourth transmission member 424 are consistent, the extending direction of the second transmission member 422 and the extending direction of the third transmission member 423 are consistent, the axial direction of the second transmission member 422 is perpendicular to the axial direction of the first transmission member 421, the axial direction of the third transmission member 423 is parallel to the axial direction of the second transmission member 422, and the axial direction of the fourth transmission member 424 is perpendicular to the axial direction of the third transmission member 423. This arrangement ensures that the power supplied to the synchronizing shaft 2 is transmitted in the first direction via the transmission assembly 42 and ultimately converted into power of the next spindle 1 in the second direction via the next transmission assembly 42. Therefore, when the transmission between the left and right stages is consistent, the rotation of the main shafts 1 is consistent, and it is also understood that all the main shafts 1 can achieve a parallel consistent rotation angle. That is, the photovoltaic tracking bracket system of the present utility model, which is fixed on the ground 200, the photovoltaic module 100 supported thereon can rotate following the rotation of the sun; since all the spindles 1 can achieve a parallel and uniform rotation angle, the rotation of the photovoltaic module 100 has synchronism and uniformity.

Finally, the structural configuration of the four components of the transmission assembly 42 is briefly described in connection with fig. 5-8. The second transmission member 422 is engaged above the first transmission member 421, the first transmission member 421 includes a first helical gear portion 401, the second transmission member 422 includes a second helical gear portion 402, and the first helical gear portion 401 is engaged with the second helical gear portion 402 to achieve a first commutation of the power transmission in the second direction; the third transmission member 423 is meshed above the second transmission member 422, the second transmission member 422 comprises a first externally hung gear portion 403, the third transmission member 423 comprises a second externally hung gear portion 404, the first externally hung gear portion 403 is meshed with the second externally hung gear portion 404, the number of teeth of the first externally hung gear portion 403 is smaller than that of teeth of the second externally hung gear portion 404, and the arrangement is so as to change the transmission ratio, improve the output torque of the transmission assembly 42, or select a motor with small specification under the condition of outputting the same torque, and reduce the cost; the fourth transmission member 424 is engaged above the third transmission member 423, the third transmission member 423 includes a threaded portion 405, that is, the third transmission member 423 corresponds to a worm, the fourth transmission member 424 includes a toothed portion 406, that is, the fourth transmission member 424 corresponds to a worm wheel, and the threaded portion 405 is engaged with the toothed portion 406 to realize a second commutation of the power transmission in the second direction. When the motor is started, the motor drives the first driving member 421 to rotate, on one hand, the rotation of the first driving member 421 drives the synchronizing shaft 2 to rotate in the first direction, and on the other hand, the rotation of the first driving member 421 drives the second driving member 422, the third driving member 423 and the fourth driving member 424 to rotate in the second direction sequentially through the meshing of the gears, the shaft head part 411 is mounted on the end face of the turbine, i.e. the fourth driving member 424, and the shaft head part 411 protrudes out of the housing 41 for connection with the spindle 1. The power of the driving source 3 is finally uniformly transmitted to the main shaft 1 through the N-stage transmission mechanism 4, so that the impact force generated by starting and stopping the motor is absorbed step by the four transmission components 421, 422, 423 and 424 of each stage of transmission mechanism 4, and the impact force acting on the main shaft 1 is reduced to the greatest extent.

The photovoltaic tracking bracket system of the present utility model is configured such that by providing two shaft head members 411 on the transmission mechanism 4, the shaft head members 411 include a second planar wall 4111 that mates with a first planar wall 11 of the spindle 1, i.e., the spindle 1 and the shaft head members 411 each include a planar wall, the shaft head members 411 are configured to mate with and be inserted into the cavity 10 of the spindle 1, the first planar wall 11 mates with the second planar wall 4111, such that an impact force generated by the start and stop of the motor acts on the planar wall of the spindle 1, and in a preferred embodiment, the first cross section of the shaft head members 411 is configured as a polygon, such as a pentagon, that matches the shape of the second cross section of the spindle 1. The impact force generated when the parallel driver is started and stopped according to the utility model reduces the damage to the joint holes of the spindle head 411 and the spindle 1 due to the planar matching relationship between the spindle head 411 and the spindle 1.

The above embodiments are only for illustrating the present utility model and not for limiting the technical solutions described in the present utility model, and the understanding of the present specification should be based on the description of the directivity of the present utility model such as "front", "rear", "left", "right", "upper", "lower", etc., and although the present specification has been described in detail with reference to the above embodiments, it should be understood by those skilled in the art that the present utility model may be modified or equivalent by those skilled in the art, and all the technical solutions and improvements that do not depart from the spirit and scope of the present utility model should be covered by the claims of the present utility model.

Claims (12)

1. A photovoltaic tracking bracket system, characterized by comprising a main shaft (1), a synchronizing shaft (2), a driving source (3) and a transmission mechanism (4), wherein the main shaft (1) is provided with a cavity (10), the main shaft (1) and the synchronizing shaft (2) extend in a first direction and are spaced in a second direction, the first direction is perpendicular to the second direction, the transmission mechanism (4) comprises N transmission mechanisms which are arranged at intervals in the first direction, and the N is a positive integer greater than 1; the driving source (3) is connected with a first transmission mechanism (4) in the first direction, and every two adjacent transmission mechanisms (4) are connected through the synchronous shaft (2);

the transmission mechanism (4) comprises two spindle head parts (411) which are oppositely arranged, the spindle (1) comprises a first plane wall (11), the spindle head parts (411) comprise a second plane wall (4111), the spindle head parts (411) are matched and inserted into a cavity (10) of the spindle (1), the first plane wall (11) is connected with the second plane wall (4111) through a fastener (5), and the first plane wall (11) is attached with the second plane wall (4111).

2. The photovoltaic tracking bracket system according to claim 1, characterized in that said first planar wall (11) comprises at least two, two of said first planar walls (11) being symmetrical with respect to the axis of said spindle (1); the second planar walls (4111) comprise at least two, two of the second planar walls (4111) are symmetrical about the axis of the head portion (411), each of the first planar walls (11) is in engagement with a corresponding one of the second planar walls (4111), and each of the first planar walls (11) and the corresponding second planar wall (4111) are each securely connected by at least one of the fasteners (5).

3. A photovoltaic tracking stand system according to claim 1, characterized in that the axial direction of the shaft head part (411) coincides with the axial direction of the main shaft (1), the shaft head part (411) having a first cross-sectional shape perpendicular to its own axial direction, the main shaft (1) having a second cross-sectional shape perpendicular to its own axial direction, the first cross-sectional shape matching the second cross-sectional shape.

4. A photovoltaic tracking bracket system according to claim 3, characterized in that the second cross-sectional shape of the spindle (1) comprises a first straight line segment (101), a second straight line segment (102), a third straight line segment (103), a fourth straight line segment (104) and a fifth straight line segment (105) connected end to end in the circumferential direction to form a closed structure; the spindle (1) takes a perpendicular bisector of the third straight line section (103) as an axisymmetric structure, the second straight line section (102) and the fourth straight line section (104) are symmetrically arranged, the first straight line section (101) and the fifth straight line section (105) are symmetrically arranged, and the second straight line section (102) and the fourth straight line section (104) are respectively and vertically connected with the third straight line section (103).

5. A photovoltaic tracking bracket system according to claim 3, characterized in that the second cross-sectional shape of the spindle (1) comprises a first straight line segment (101), a second straight line segment (102), a third straight line segment (103), a first arc segment (101 '), a second arc segment (102 ') and a third arc segment (103 ') connected end to end in the circumferential direction to form a closed structure; the first arc line segment (101 ') is connected between the second straight line segment (102) and the third straight line segment (103), the second arc line segment (102') is connected between the first straight line segment (101) and the second straight line segment (102), the third arc line segment (103 ') is connected between the first straight line segment (101) and the third straight line segment (103), and the first arc line segment (101'), the second arc line segment (102 ') and the third arc line segment (103') are three arcs distributed on the same circle.

6. A photovoltaic tracking bracket system according to any of claims 1 to 5, characterized in that a first hole (112) is provided in the first planar wall (11) and a second hole (4112) is provided in the second planar wall (4111), the fastener (5) passing through both the first hole (112) and the second hole (4112) fixedly connecting the shaft head part (411) to both the main shaft (1).

7. The photovoltaic tracking rack system of any of claims 1-5 wherein the first direction is a side-to-side direction and the second direction is an up-and-down direction;

each transmission mechanism (4) comprises a shell (41) and a transmission assembly (42), a containing cavity (40) is formed in the shell (41), the transmission assembly (42) comprises a first transmission member (421), a second transmission member (422), a third transmission member (423) and a fourth transmission member (424) which are positioned in the containing cavity (40) and are sequentially meshed and connected in the second direction, the first transmission member (421) is positioned at the lowest part of the transmission assembly (42) and the fourth transmission member (424) is positioned at the uppermost part of the transmission assembly (42), the shaft head part (411) is installed on the end face of the fourth transmission member (424), and the shaft head part (411) protrudes out of the shell (41) and is used for being connected with the spindle (1).

8. The photovoltaic tracking rack system of claim 7 wherein the photovoltaic module comprises a photovoltaic module,

the drive source (3) has an output shaft (30);

the first transmission member (421) comprises a first transmission shaft (4210), two ends of the first transmission shaft (4210) are respectively and coaxially connected with the output shaft (30) and the synchronizing shaft (2), and the first transmission shaft (4210), the output shaft (30) and the synchronizing shaft (2) are parallel to the shaft head part (411).

9. The photovoltaic tracking bracket system according to claim 8, characterized in that an end of the first transmission shaft (4210) close to the output shaft (30) is a power input end (4211), and the power input end (4211) is exposed outside the housing (41) and is directly or indirectly connected with the driving source (3); one end of the first transmission shaft (4210) far away from the output shaft (30) is a power output end (4212), and the power output end (4212) is exposed out of the shell (41) and connected with the synchronous shaft (2).

10. The photovoltaic tracking bracket system according to claim 9, wherein the first transmission shaft (4210) is connected with the synchronizing shaft (2) through a shaft sleeve (6), the shaft sleeve (6) is fixedly sleeved on the periphery of the power input end (4211) and/or the power output end (4212), and the synchronizing shaft (2) is fixedly sleeved on the periphery of the shaft sleeve (6).

11. The photovoltaic tracking rack system of claim 7 wherein the photovoltaic module comprises a photovoltaic module,

the second transmission member (422) is meshed above the first transmission member (421), the first transmission member (421) comprises a first helical gear part (401), the second transmission member (422) comprises a second helical gear part (402), and the first helical gear part (401) is meshed with the second helical gear part (402) to realize the first reversing of the power transmission in the second direction;

the fourth transmission member (424) is meshed above the third transmission member (423), the third transmission member (423) comprises a threaded portion (405), the fourth transmission member (424) comprises a toothed portion (406), and the threaded portion (405) is meshed with the toothed portion (406) to realize second reversing of power transmission in a second direction.

12. The photovoltaic tracking bracket system according to claim 7, characterized in that the third transmission member (423) is engaged above the second transmission member (422), the second transmission member (422) comprises a first external gear portion (403), the third transmission member (423) comprises a second external gear portion (404), the first external gear portion (403) is engaged with the second external gear portion (404), and the number of teeth of the first external gear portion (403) is smaller than the number of teeth of the second external gear portion (404).