CN115102488A

CN115102488A - Flat single-shaft tracking support

Info

Publication number: CN115102488A
Application number: CN202210824700.7A
Authority: CN
Inventors: 郭家宝; 刘霄
Original assignee: SHANGHAI MOKUN NEW ENERGY TECHNOLOGY CO LTD
Current assignee: SHANGHAI MOKUN NEW ENERGY TECHNOLOGY CO LTD
Priority date: 2022-07-14
Filing date: 2022-07-14
Publication date: 2022-09-23
Also published as: WO2024012112A1

Abstract

The invention provides a flat single-shaft tracking support which comprises a stand column, a main beam rotatably supported on the stand column, a driving unit, a pin and an inserting and matching piece, wherein the pin comprises a tail section and a head section connected with the tail section, the size of the cross section of the head section is gradually increased from the pin head of the pin to the tail section, and the inserting and matching piece is provided with a jack. The pin is arranged on a first side of the upright column and the main beam, the inserting fitting is connected to a second side of the upright column and the main beam, the pin is arranged to drive the tail section through the driving unit and move towards the inserting fitting along the pin length direction of the pin, so that after the head section of the pin penetrates through the jack, the tail section is matched in the jack, and therefore the main beam is locked relative to the upright column. The flat single-axis tracking support can have good wind resistance.

Description

Flat single-shaft tracking support

Technical Field

The invention relates to a flat single-shaft tracking support.

Background

In photovoltaic power generation systems, a flat single-axis tracking mount is one of the most commonly used photovoltaic array mounts. Under the general condition, the single-row flat single-shaft tracking support is formed by supporting a photovoltaic module by a through long main beam, a plurality of stand columns are supported on the ground in the extension direction of the main beam, and the length of the main beam can reach dozens of meters, even nearly one hundred meters. The flat single-shaft tracking support adopts a rotary speed reducer arranged at the middle upright post part to drive the flat single-shaft tracking support to track the sun track to rotate.

The inventor analyzes and considers that the flat single-shaft tracking support has a fatal defect, namely, because the two ends of the main beam are far away from the driving point of the middle rotary speed reducer, when encountering strong wind, the photovoltaic assembly on the main beam can generate the back-and-forth oscillation in the east-west direction under the influence of wind pressure deviation, the main beam bears larger torsion, and the main beam can cause resonance when being serious, so that the tracking support is damaged.

Therefore, it is desirable to provide a flat single-axis tracking support that has good wind resistance.

Disclosure of Invention

The invention aims to provide a flat single-axis tracking support which can have good wind resistance.

The invention provides a flat single-shaft tracking support which comprises a stand column, a main beam rotatably supported on the stand column, a driving unit, a pin and an inserting and matching piece, wherein the pin comprises a tail section and a head section connected with the tail section, the size of the cross section of the head section is gradually increased from the pin head of the pin to the tail section, and the inserting and matching piece is provided with a jack. The pin is arranged on a first side of the upright column and the main beam, the inserting fitting is connected to a second side of the upright column and the main beam, and the pin is arranged to be driven by the driving unit to move towards the inserting fitting along the pin length direction of the pin, so that after the head section of the pin passes through the insertion hole, the tail section is matched in the insertion hole, and therefore the main beam is locked relative to the upright column.

In one embodiment, the cross-section of the tail section has a length in a second direction, the cross-section of the tail section has a width that is less than the length in a vertical direction, the second direction being a horizontal direction perpendicular to an axis of rotation of the main beam relative to the upright.

In one embodiment, the tail section is straight kidney-shaped in cross-section.

In one embodiment, the tail section is in clearance fit with the jack, wherein the clearance between the tail section and the jack in the second direction is 1mm-2mm, and the clearance between the tail section and the jack in the vertical direction is more than 1 mm.

In one embodiment, the pin length direction is parallel to the axis of rotation of the main beam relative to the upright.

In one embodiment, the pin is provided to the column, and the drive unit is secured to the column.

In one embodiment, the flat single-axis tracking bracket further comprises a guide member and a fitting member, the guide member comprises a circular arc guide rail having a central axis and an arc length direction, and the fitting member is movably fitted with the circular arc guide rail so as to be movably disposed along the arc length direction with respect to the circular arc guide rail. The fitting member is connected to the first side, the guide member constitutes the insertion fitting member, and the second side is connected, whereby the main beam is rotatably supported on the column about the center axis, and the circular arc guide rail is arranged around the main beam so that the center of gravity of a rotating portion constituted by the main beam and other portions rotating following the main beam is located on the center axis.

In one embodiment, the main beam is connected to the guide member, the guide member has two surfaces in the axial direction, the two surfaces of the guide member are respectively provided with an arc groove, and the two arc grooves corresponding to the two surfaces jointly form the arc guide rail. The fitting piece comprises a roller pair, the roller pair is composed of two rollers which are coaxially arranged and axially spaced, and the two rollers are respectively in rolling fit with the two arc grooves.

In one embodiment, the single-shaft tracking support further comprises two vertical plates distributed along the axial direction, the two vertical plates are respectively provided with an axle protruding towards each other, two rollers of each roller pair are respectively supported by the axles of the two vertical plates in a rolling manner, and the two vertical plates are erected at the top ends of the vertical columns. The jack is axially arranged between the two arc grooves and communicated with the two arc grooves, and the pin is arranged on one vertical plate of the two vertical plates and penetrates through one arc groove of the two arc grooves to be matched with the jack.

In one embodiment, the flat single-axis tracking carriage is an automatic tracking carriage and the drive unit is an electric drive unit. The automatic tracking stand also includes a sensor and a control system. The sensor senses wind force. The control system judges the wind power according to the signals transmitted by the sensors, wherein when the wind power exceeds a first preset value, the control system sends a driving signal to the electric driving unit to drive the electric driving unit to push the pin to be matched with the jack, and when the wind power is smaller than a second preset value, the control system sends a driving signal to the electric driving unit to drive the electric driving unit to retreat the pin to leave the jack.

In the flat single-axis tracking support, when strong wind comes temporarily, the driving unit can drive the pin, so that the pin moves towards the insertion part, and is gradually inserted into the insertion hole through the guiding of the head section, so that the tail section is adapted to the insertion hole, and therefore, the main beam can be locked and the locking state of the main beam is kept, and the flat single-axis tracking support has good wind resistance.

Drawings

The above and other features, properties and advantages of the present invention will become more apparent from the following description taken in conjunction with the accompanying drawings and examples, in which:

fig. 1 is a front view of a flat single-axis tracking stand according to a first embodiment.

Fig. 2 is a side view of the flat single-axis tracking stand of fig. 1.

Fig. 3A, 3B and 3C are three views showing the drive unit and the pin fitting, respectively.

Fig. 4A and 4B are two views showing the plug-in member according to the first embodiment, respectively.

Fig. 5 is a schematic view showing the insertion fitting according to the modification.

Fig. 6 is a front view of a flat single-axis tracking stand according to a second embodiment.

Fig. 7 is a side view of the flat single axis tracking stand of fig. 6.

Detailed Description

The present invention will be further described with reference to the following detailed description and the accompanying drawings, wherein the following description sets forth further details for the purpose of providing a thorough understanding of the present invention, but it is apparent that the present invention can be embodied in many other forms other than those described herein, and it will be readily apparent to those skilled in the art that the present invention may be embodied in many different forms without departing from the spirit or scope of the invention.

For example, if a first feature is formed over or on a second feature in a description that follows, this may include embodiments in which the first and second features are formed in direct contact, and may also include embodiments in which additional features may be formed between the first and second features, such that the first and second features may not be in direct contact. Further, when a first element is described as being coupled or coupled to a second element, the description includes embodiments in which the first and second elements are directly coupled or coupled to each other, as well as embodiments in which one or more additional intervening elements are added to indirectly couple or couple the first and second elements to each other.

As an example of a flat single axis tracking mount, the flat single axis tracking mount may be a east-west tracking mount. Because the support can track the change of the solar azimuth angle in the daytime, the annual power generation total amount of the photovoltaic module adopting the flat single-axis tracking support is 15-25% higher than that of the photovoltaic module adopting the optimal fixed inclination angle support.

Generally, a single-row flat single-shaft tracking support is provided with a main beam with a length in the north-south direction for supporting a photovoltaic module, a plurality of stand columns of the main beam in the north-south direction are supported on the ground, and the length in the north-south direction can reach dozens of meters, even hundreds of meters.

As mentioned above, a rotary speed reducer is usually installed at the middle upright column of the single-row flat single-axis tracking support to drive the entire row of supports to rotate from east to west tracking the sun track every day. The posture of the photovoltaic module tracking the track of the sun from east to west is completely limited by a rotary speed reducer in the middle.

The inventor analyzes and considers that the tracking support has a fatal defect, namely, because the distance between the north and south ends and the driving point of the middle rotary speed reducer is far, when meeting strong wind, the photovoltaic assembly on the main beam can generate the back and forth oscillation in the east-west direction under the influence of wind pressure deviation, the main beam bears larger torsion, and the main beam can cause resonance in serious conditions, thereby damaging the tracking support.

The inventor further analyzes and considers that even a strong wind protection mode of the photovoltaic module with 0 degree of flat is adopted, the problem still cannot be solved. Dampers are usually added to the upright posts on the north and south sides to suppress the vibration of the main beam, thereby preventing such phenomena. However, practice has found that this method is effective when the wind is low, but is not ideal when the wind is high.

Therefore, the invention provides a flat single-axis tracking support, also called a photovoltaic single-axis tracking support. This flat single-axis tracking support can make flat single-axis tracking support when 0 sets level (strong wind protection) gesture, with girder and stand direct locking, no longer produces relative rotation, and then makes photovoltaic module for example be in the horizontal gesture all the time, no longer produces the oscillation by a wide margin, fundamentally solves flat single-axis tracking support's strong wind protection problem.

Fig. 1 to 4B show an example configuration of a flat uniaxial tracking support 10 according to a first embodiment.

The flat single-axis tracking bracket 10 includes a column 1 and a main beam 2 rotatably supported to the column 1.

The flat single-axis tracking stand 10 further includes a drive unit 3, a pin 4, and an insertion fitting 5. The pin 4 comprises a tail section 41 and a head section 42 connecting the tail section 41. The cross-sectional dimension of the head section 42 increases from the pin head 44 of the stud 4 towards the tail section 41. The plug-in member 5 is provided with a plug hole 54.

The studs 4 are provided on a first one of the uprights 1 and main beams 2 and the spigots 5 are connected to a second one of the uprights 1 and main beams 2.

The stud 4 is arranged to be movable in the longitudinal direction D1 of the stud 4 towards the fitting 5 by the drive unit 3 driving the tail section 41 so that the tail section 41 fits into the receptacle 54 after the head section 42 of the stud 4 has passed through the receptacle 54, whereby the girder 2 is locked relative to the column 1.

In the flat single-axis tracking bracket 10, a plurality of columns 1 are arranged generally along the elongation direction of a main beam 2, and collectively support one main beam 2. The main beam 2 is usually rotatably supported on the column 1, so as to drive the photovoltaic module 20 supported on the main beam 2 to rotate around the shaft, for example, in fig. 1 and 2, a purlin 30 is supported on the main beam 2, and then the photovoltaic module 20 is supported by the purlin 30. It is to be understood that the terms "plurality," "plurality," and the like, herein mean more than two, including two, three, four, five, and the like.

The pin 4 is provided on the first side, and the fitting 5 is connected to the second side. That is, as shown in fig. 1 and 2, when the pin 4 is provided to the pillar 1, the insert fitting 5 is connected to the main beam 2. And the pin 4 is arranged on the main beam, the inserting fitting part 5 is connected to the upright post 1. It will be understood that it is intended here that one of the studs 4 and the plug-in fittings 5 rotates with the main beam 2 relative to the upright, while the other does not rotate with the main beam 2, but is stationary relative to the upright 1 for this rotation.

The tail section 41 and the head section 42 of the stud 4 are two parts comprising a pin tail 43 and a pin head 44, respectively, the pin tail 43 and the pin head 44 being the ends of the stud 4.

The cross-sectional dimension of the head section 42 increases from the pin head 44 of the pin 4 to the end section 41, i.e. the head section 42 becomes thicker from the pin head 44 to the end section 41.

It will be appreciated that spatial relational terms such as "upper", "lower", "vertical", "horizontal", and the like, are used herein to describe one element or feature's relationship to another element or feature as illustrated in the figures, with reference to the general state of placement of the flat single-axis tracking rack 10, and in particular, to the horizontal state in which the photovoltaic modules 20 are placed horizontally, for ease of description. If the flat single axis tracking support 10 is laid down or the photovoltaic module 20 is placed at an oblique angle, the above terms of spatial relationship should be interpreted accordingly.

It will also be understood that references herein to two directions being "perpendicular", "coincident", "parallel", etc. do not necessarily satisfy mathematically strict angular requirements, but allow for a range of tolerances, for example, within 20 ° compared to mathematically required angles, whereas "along" a direction means having at least a component in that direction, preferably within 45 ° and more preferably within 20 ° or even 5 ° of that direction.

When the main beam 2 needs to be locked relative to the upright post 1 in a strong wind state, for example, the flat single-shaft tracking bracket 10 is driven by the driving unit 3 to drive the tail section 41 of the pin 4, so that the pin 4 can move towards the insertion fitting 5, firstly, the head section 42 penetrates into the insertion hole 54, and after the head section 42 penetrates through the insertion hole 54, the tail section 41 is matched in the insertion hole 54, so that the main beam 2 is locked through matching of the tail section 41 and the insertion hole 54, and the locked state of the main beam 2 is maintained. The head section 42 is tapered from the pin head 44 and provides good guidance, so that the deviation correction is provided even when the insert part 5 is slightly out of position as it should be.

With reference to fig. 3A-3C, and in particular fig. 3C, the cross-section of the tail section 41 may have a length L1 in the second direction D2, and the cross-section of the tail section 41 may have a width W1 in the vertical direction that is less than the length L1. With reference to fig. 1, the second direction D2 is a horizontal direction perpendicular to the rotation axis O1 of the main beam 2 relative to the upright 1.

With continued reference to FIG. 3C, the cross-section of the tail section 41 is straight kidney-shaped. The straight waist shape is also the shape after two short sides of the rectangle are rounded. Specifically, the cross section of the tail section 41 has a semicircular arc-shaped outer contour on both sides in the second direction D2, and a linear outer contour on both sides in the vertical direction.

As shown in fig. 2, the tail section 41 may be a clearance fit with the receptacle 54. The gap between the tail section 41 and the insertion hole 54 in the second direction D2 may be 1mm-2mm, and the gap between the tail section 41 and the insertion hole 54 in the vertical direction may be 1mm or more. When locking the state, especially when locking the photovoltaic module 20 in a horizontal state, the module may be shaken, and if the gap is too small, the module may be misaligned. The above values are preferred ranges of values obtained in practice. It is to be understood that the above ranges are inclusive of the endpoints. In another embodiment, the cross-section of the tail section 41 may also be a kidney-arc shape, and the arc line extending by the kidney-arc shape may be a circular arc line around the rotation axis O1.

As shown in fig. 1, the pin length direction D1 may be parallel to the axis of rotation O1 of the main beam 2 relative to the upright 1.

As mentioned above, in fig. 1, the pin 4 may be provided to the column 1, and the driving unit 3 may be secured to the column 1. Thus, it is more stable.

In the illustrated embodiment, the flat single-axis tracking mount 10 may be an automatic tracking mount, i.e., may automatically track the angular change of the sun and automatically adjust the tilt angle. The drive unit 3 may be an electric drive unit, i.e. capable of being driven by an electric signal, such as an electric push rod.

As shown in fig. 1, the auto-tracking stand, which is a flat single-axis tracking stand 10, may further include a sensor 40 and a control system 50.

The sensor 40 may sense wind, for example, the magnitude of wind speed.

The control system 50 may determine the wind force based on signals transmitted by the sensor 50. Wherein, when the wind force exceeds a first predetermined value (e.g. the wind speed reaches above 15 m/s), the control system 50 sends a driving signal to the electric driving unit as the driving unit 3, which drives the electric driving unit to push the pin 4 to fit into the receptacle 54. And when the wind power is less than a second predetermined value, a driving signal is sent to the electrically driven unit to drive the electrically driven unit to retract the pin 4 from the jack 54.

The control system 50 may be a control box, and performs signal transmission with the sensor 40, the driving unit 3, and the like in a wired or wireless manner.

In general, the above-described drive unit 3, the pin 4, and the socket 5 and the like together constitute a wind-resistant locking device. In fig. 1 to 4B, the head of the drive unit 3, e.g. an electric putter, may be fitted with a kidney-shaped stud 4. The pin 4 is in a waist-shaped cross section, the head of the pin is in a taper shape, the pin 4 is horizontally arranged at the head of the electric push rod, and the waist of the vertical cross section of the pin is in a horizontal shape. The end of the fitting 5 is provided with a kidney-shaped receptacle 54. The head section 42 of the pin 4 can also be conical, in particular when the angular deviation is not large.

The driving unit 3 with the waist-shaped pin 4 can be horizontally arranged on the upright post 1 by a fastener, and the insertion part 5 can be arranged on the lower end surface of the main beam 2 by a fastener. When a strong wind comes, the control system 50 receives a command to make the flat single-axis tracking bracket 10 enter a 0-degree strong wind protection state, wherein the insertion part 5 is vertically downward, and the kidney-shaped insertion hole 54 at the end part of the insertion part 5 is aligned with the kidney-shaped pin 4 at the front end of the driving unit 3. In this state, the control system 50 gives a command to the drive unit 3 to cause the drive unit 3 to push the kidney-shaped pin 4 to be inserted into the kidney-shaped pin 4 hole on the socket 5. Therefore, the rotating part of the flat single-axis tracking support 10 and the upright post 1 are rigidly locked and do not rotate relatively any more, and the flat single-axis tracking support 10 is prevented from being damaged by vibration due to strong wind.

The pin 4 has a waist-shaped section and is horizontally arranged, and the head section 42 has a conical structure and can play a role in guiding insertion. The tapered design of the head section may serve to guide the kidney pin 4 into effective insertion into the kidney socket 54 on the fitting piece 5. In practical conditions, when the state of 0 degree of strong wind protection is entered, a certain angular deviation often occurs between the insertion hole 54 of the insertion part 5 and the pin 4 of the driving unit 3, at this time, the head of the kidney-shaped pin 4 is pointed, so that the insertion part 5 can still be inserted into the kidney-shaped insertion hole 54 of the insertion part 5, and then the angular deviation correction of the insertion part 5 is formed under the thrust action of the driving unit 3 through the tapered guiding action of the head section of the kidney-shaped pin 4, thereby realizing effective insertion locking.

Since the mounting position of the waist-shaped pin 4 on the driving unit 3 and the radial position of the waist-shaped insertion hole 54 on the insertion part 5 are relatively fixed, large deviation does not occur, and therefore, the head of the waist-shaped pin 4 has a small taper in the vertical direction. In the horizontal direction, under the action of strong wind, the main beam 2 can generate axial elastic torsion, so that a certain angular deviation, such as an angular deviation of 2-3 degrees, can occur in the circumferential direction, and the pin 4 is prevented from being effectively inserted into the jack 54. The head section 42 of the pin 4 is designed to have a larger taper angle in the horizontal direction and the second direction D2, so that when deviation occurs, the kidney-shaped pin 4 can still be effectively inserted into the kidney-shaped pin 4 hole on the insertion part 5 through taper introduction, the deviation of the elastic torsion angle of the main beam 2 caused by strong wind is about 2-3 degrees, and the aforementioned phenomenon can be prevented. The conical design of the waist-shaped pin 4 in the horizontal direction can ensure that the waist-shaped pin 4 can still be effectively inserted into the waist-shaped insertion hole 54 on the insertion part 5 when a torsion angle of 5 degrees to 6 degrees or even larger occurs, thereby realizing the locking function.

Fig. 5 shows a variant of the plug-in part, designated as plug-in part 5 a. In fig. 4A and 4B, only one insertion hole 54 is provided in the insertion fitting 5, and the main portion of the insertion fitting 5 where the insertion hole 54 is provided is a rectangular plate with a narrow short side, which may be referred to as a rotary lever. Whereas in fig. 5, a plurality of receptacles 54a are arranged, for example, uniformly distributed, in the socket 5a about the rotation axis O1 of the main beam 2 with respect to the upright 1, the main portion of the socket 5a where the receptacles 54a are provided is a sector plate. In this way, wind-resistant locking at multiple angles may be achieved.

It is understood that the use of particular words herein to describe one embodiment of the invention, such as "one embodiment," "another embodiment," and/or "some embodiments" means that a particular feature, structure, or characteristic described in connection with at least one embodiment of the invention. Therefore, it is emphasized and should be appreciated that two or more references to "one embodiment" or "another embodiment" in various places throughout this specification are not necessarily to the same embodiment. Furthermore, some of the features, structures, or characteristics of one or more embodiments of the present invention may be combined as suitable.

Fig. 6 and 7 show an example configuration of a flat uniaxial tracking support 10b according to a second embodiment. In the first embodiment, the main beam 2 is supported by other components relative to the upright 1, for example, in fig. 1, the main beam 2 is supported above the upright 1 by a support bearing 60 in a rotatable manner, and an insertion fitting 5 is additionally arranged. The second embodiment differs from the first embodiment in that the fitting 5b itself is a component that helps to achieve the rotation of the main beam 2 relative to the upright 1. The same or similar reference numerals are used for the same or similar features in the different embodiments, and the description similar to that of the first embodiment is omitted below.

The flat single-axis tracking bracket 10b still includes the upright 1 and the main beam 2.

In fig. 6 and 7, the flat single-axis tracking bracket 10b further includes a guide 6 and a fitting member 7. The guide 6 includes a circular arc guide rail 61 having a central axis Ob and an arc length direction C1. The engaging member 7 is movably engaged with the circular arc guide rail 61 so as to be movably disposed in the arc length direction C1 with respect to the circular arc guide rail 61.

The fitting 7 can be connected to the first side (i.e., the side of the upright 1 and the girder 2 on which the pin 4 is provided), and the guide 6 constitutes a fitting 5b connected to the second side, whereby the girder 2 is rotatably supported on the upright 1 about the central axis Ob. That is, the rotation axis of the main beam 2 is the central axis Ob of the circular arc guide rail 61.

The circular arc guide rails 61 are arranged around the girder 2 so that the center of gravity of the turning part is located on the center axis Ob. The turning part is constituted by the main beam 2 and the other parts that follow the turning of the main beam 2. The rotating portion is all components that rotate around the central axis Ob together with the main beam 2, including the main beam 2 itself, the photovoltaic module 20, the purlin 30, and various connecting fasteners, etc. It will be appreciated that the "centre of gravity at the central axis Ob" herein allows for tolerances, for example within 5 mm.

Continuing with fig. 6 and 7, the main beam 2 is attached to the guide 6. I.e. the aforementioned second party is the main beam 2. Specifically, the main beams 2 are connected to the purlins 30 by the pressing plates 21, and both ends of the guide 6 are connected to the purlins 30.

The guide 6 has two surfaces 63 in the axial direction. The guide 6 is provided with a circular arc groove 65 on both surfaces 63, respectively. The two circular arc grooves 65 corresponding to the two surfaces 63 together constitute a circular arc guide 61. It will be understood that the axial direction, i.e. the direction in which the central axis Ob extends, in the figure, is the pin length direction D1 of the pin 4.

The mating member 7 comprises a pair of rollers 8. The roller pair 8 is composed of two rollers 81 coaxially disposed and axially spaced, and the two rollers 81 are respectively in rolling engagement with the two circular arc grooves 65.

As shown in fig. 7, the single-axis tracking bracket 10b may further include two vertical plates 9 distributed along the axial direction. The two rollers 81 of each roller pair 8 may be rollably supported therebetween by the two vertical plates 9, respectively. Two vertical plates 9 can be erected on the top end of the upright post 1.

The insertion hole 54b may be disposed between the two circular arc grooves 65 in the axial direction and communicate the two circular arc grooves 65. The stud 4 may be provided on one of the two vertical plates 9, passing through one of the two circular arc grooves 65 to be fitted into the insertion hole 54 b.

In fig. 7, the fitting 7 may comprise two roller pairs 8. The two roller pairs 8 are distributed along the arc length direction C1. The receptacle 54b may be located between the two roller pairs 8 in the arc length direction C1.

In fig. 6 and 7, the guide 6 can also be a bearing arc, and the vertical plate 9 can be called a bearing seat. A waist-shaped insertion hole 54b is formed in the middle of the guide piece 6, a through waist-shaped through hole is formed in the vertical plate 9 provided with the pin 4, the driving unit 3 is horizontally arranged on the bearing seat, and when the high wind enters a 0-degree state, the driving unit 3 inserts the waist-shaped pin 4 into the through waist-shaped insertion hole 54b, so that wind-resistant locking is achieved.

Other details of the flat single-axis tracking bracket 10b can be found in chinese patent CN 114039537A.

With the gradual maturity of the photovoltaic power generation technology, the single-shaft tracking support is widely applied, so that the wind-resistant locking device has a very wide application prospect in the future photovoltaic power station construction.

Although the present invention has been disclosed in terms of the preferred embodiment, it is not intended to limit the invention, and variations and modifications may be made by one skilled in the art without departing from the spirit and scope of the invention. Therefore, any modification, equivalent change and modification of the above embodiments according to the technical essence of the present invention are within the protection scope defined by the claims of the present invention, unless the technical essence of the present invention departs from the content of the present invention.

Claims

1. The utility model provides a flat single-axis tracking support, include the stand with rotationally support in the girder of stand, its characterized in that still includes:

a drive unit;

a pintle including a tail section and a head section connecting the tail section, the head section increasing in cross-sectional size from a pintle head of the pintle to the tail section; and

the insertion part is provided with an insertion hole;

the pin is arranged on a first side of the upright post and the main beam, the inserting fitting is connected to a second side of the upright post and the main beam, and the pin is arranged to be driven by the driving unit to move towards the inserting fitting along the pin length direction of the pin, so that after the head section of the pin passes through the jack, the tail section is matched in the jack, and therefore the main beam is locked relative to the upright post.

2. The flat single axis tracking carriage of claim 1,

the cross section of the tail section has a length in a second direction, the cross section of the tail section has a width smaller than the length in a vertical direction, and the second direction is a horizontal direction perpendicular to a rotation axis of the main beam relative to the upright post.

3. The flat single axis tracking cradle of claim 2, wherein said tail section is straight kidney shaped in cross section.

4. The flat single-axis tracking mount of claim 3, wherein the tail section is clearance-fit to the socket, wherein the tail section is 1mm to 2mm clearance from the socket in the second direction, and wherein the tail section is 1mm or more clearance from the socket in the vertical direction.

5. The flat single axis tracking carriage of claim 1 wherein the pin length direction is parallel to the axis of rotation of said main beam relative to said upright.

6. The flat single axis tracking carriage of claim 1,

the pin is disposed on the upright, and the driving unit is fixedly connected to the upright.

7. The flat single axis tracking carriage according to claim 1 further comprising a guide member comprising an arcuate rail having a central axis and an arcuate length direction, and an engaging member movably engaged with the arcuate rail so as to be movably disposed along the arcuate length direction with respect to the arcuate rail;

the mating member is connected to the first side, and the guide member constitutes the insertion fitting member and is connected to the second side, whereby the main beam is rotatably supported on the pillar about the center axis; and is

The circular arc guide rail is arranged to surround the main beam such that the center of gravity of a rotating section, which is constituted by the main beam and other sections that rotate following the main beam, is located on the central axis.

8. The flat single axis tracking carriage of claim 7,

the main beam is connected with the guide piece, the guide piece is provided with two surfaces in the axial direction, the two surfaces of the guide piece are respectively provided with an arc groove, and the two arc grooves corresponding to the two surfaces form the arc guide rail together;

the fitting piece comprises a roller pair, the roller pair is composed of two rollers which are coaxially arranged and axially spaced, and the two rollers are respectively in rolling fit with the two arc grooves.

9. The flat single axis tracking carriage of claim 8,

the single-shaft tracking support further comprises two vertical plates which are distributed along the axial direction, wheel shafts which protrude towards each other are respectively arranged on the two vertical plates, two rollers of each roller pair are respectively supported by the wheel shafts of the two vertical plates in a rolling manner, and the two vertical plates are erected at the top ends of the vertical plates;

the jack is axially arranged between the two arc grooves and communicated with the two arc grooves, and the pin is arranged on one vertical plate of the two vertical plates and penetrates through one arc groove of the two arc grooves to be matched with the jack.

10. The flat single axis tracking carriage of claim 1,

the flat single-shaft tracking support is an automatic tracking support, and the driving unit is an electric driving unit;

the automatic tracking stand further comprises:

a sensor to sense wind force; and

and the control system judges the wind power according to the signal transmitted by the sensor, when the wind power exceeds a first preset value, the control system sends a driving signal to the electrically-driven unit to drive the electrically-driven unit to push the pin to be adapted to the jack, and when the wind power is smaller than a second preset value, the control system sends a driving signal to the electrically-driven unit to drive the electrically-driven unit to retreat the pin to leave the jack.