CN209982403U - Photovoltaic manual adjustable support - Google Patents

Abstract

The utility model provides a manual adjustable support of photovoltaic, including rotor and the stand that supports the rotor, still include eccentric compensation arrangement, this eccentric compensation arrangement installs in the north side of stand, including spring support piece, spring, flexible piece and follow the rotor, spring support piece provides the accommodation space, places in the accommodation space in the spring, the accommodation space allows and guides the spring freely to stretch out and draw back in upper and lower direction, the lower extreme transmission of flexible piece connects the lower extreme of spring, the flexible piece is worn out from the spring along upper and lower direction, the upper end is connected and is followed the rotor, follow the rotor and connect the rotor, follow the rotor and rotate; when the following rotating part rotates along with the rotating body, the following rotating part pulls the spring through the flexible part, the spring is forced to be compressed to generate elastic force, and the additional torque generated by the fact that the center of gravity of the rotating body is not overlapped with the rotating center is balanced by means of the elastic force. This manual adjustable support of photovoltaic can compensate eccentric effectively.

Description

Photovoltaic manual adjustable support

Technical Field

The utility model relates to a manual adjustable support of photovoltaic.

Background

In a photovoltaic power generation system, a manual adjustable bracket is one of the most commonly used photovoltaic array brackets, because the bracket can be divided into a plurality of time periods in one year according to the change rule of the solar altitude angle, the bracket inclination angle is adjusted in a manual adjustment mode, so that the bracket is in the optimal inclination angle state in each time period, and the annual power generation total amount of a photovoltaic module adopting the manual adjustable bracket is 5-10% higher than the annual power generation total amount of the photovoltaic module adopting the optimal fixed inclination bracket.

Usually, the rotation center of the rotating part of the manually adjustable bracket is usually at the center or below the section of the main beam, and the assembly is usually installed on the main beam, so the center of gravity of the section of the rotating part of the bracket is usually not at the rotation center, which makes the bracket need to overcome the additional torque caused by eccentricity during manual adjustment, and brings certain difficulty to the adjustment of the manually adjustable bracket.

Therefore, in patent No. ZL210420645335.4, a counterweight is used to compensate for the additional torque caused by eccentricity, so that the rotating part of the manually adjustable bracket keeps moment balance, and manual adjustment is facilitated. However, in this way, a large number of balancing weights need to be added, the transportation workload and the cost are greatly increased, and more burden is brought to manufacturing and installation.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a manual adjustable support of photovoltaic can compensate eccentric effectively.

The utility model provides a photovoltaic manual adjustable support, including rotor and the stand that supports the rotor, still include eccentric compensation arrangement, this eccentric compensation arrangement installs in the north side of stand, including spring support piece, spring, flexible piece and following rotor, spring support piece provides the accommodation space, place in the spring in the accommodation space, the accommodation space allows and guides the spring freely stretches out and draws back in the upper and lower direction, the lower extreme transmission of flexible piece connects the lower extreme of spring, flexible piece is followed from the spring and is followed the upper and lower direction and worn out, the upper end is connected with follow rotor, follow rotor connects the rotor, follow the rotor and rotate; when the following rotating part follows the rotating body to rotate, the following rotating part pulls the spring through the flexible part, the spring is forced to be compressed to generate elastic force, and the additional torque generated by the rotating body due to the fact that the center of gravity and the rotating center are not overlapped is balanced by means of the elastic force.

In one embodiment, the following rotating member is a sector wheel, and is arranged along a rotation axis of the rotating member, and a wheel groove is formed in the outer periphery of the following rotating member, the wheel groove is located in the north side of the upright column, the flexible member is threaded out from the upper end of the spring and then wound into the wheel groove, extends upwards along the wheel groove, and finally, the upper end of the flexible member is fixed on one side edge of the sector wheel.

In one embodiment, the spring support is provided at its upper end with a guide wheel, via which the flexible element is guided and wound into the wheel groove.

In one embodiment, the flexible member extends upwardly out of the spring along a centerline of the spring, the centerline of the spring being disposed collinear with a vertical tangent of the wheel well.

In one embodiment, the following rotating piece is a swing arm, the upper end of the swing arm is arranged along a co-rotating axis of the rotating body, and the swing arm extends downwards towards the north side of the upright post; the flexible piece penetrates out of the upper end of the spring and then is connected with the lower end of the swing arm.

In one embodiment, the spring support is provided at its upper end with a guide wheel, via which the flexible member is guided and extends to the lower end of the swing arm in connection therewith.

In one embodiment, the spring support comprises a sleeve, a fixed plate located at the upper end of the sleeve and a movable plate located at the lower end of the sleeve, the spring is clamped by the fixed plate and the movable plate, the lower end of the flexible member is connected with the movable plate and transmits the pulling force to the spring through the movable plate, and the fixed plate is provided with a through hole for the flexible member to pass through.

In one embodiment, the aperture in the fixation plate allows the flexible member to swing side-to-side in the aperture.

In one embodiment, the spring is a coil spring.

In one embodiment, the flexure coincides with a centerline of the spring and a centerline of the post in a north-south orthographic projection.

Above-mentioned manual adjustable support of photovoltaic includes eccentric compensation arrangement, does not need the balancing weight can offset effectively because of the eccentric additional moment of torsion that brings to make the centre of rotation of manual adjustable support no matter be at the girder center, still can both realize the moment of torsion balance in the girder below, and then make manual regulation more convenient, and transport work load is little, simple to operate.

Drawings

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

fig. 1 is a side view of a photovoltaic manually adjustable support according to a first embodiment.

Fig. 2 is a front view of a photovoltaic manually adjustable mount according to a first embodiment.

Fig. 3A is a front view of the sector wheel, and fig. 3B is a side view of the sector wheel.

Fig. 4A is a front view of the spring support and fig. 4B is a side view of the spring support.

Fig. 5A is a front view of the guide wheel, and fig. 5B is a side view of the guide wheel.

Fig. 6 is a schematic view of the adjustment of the position of the spring support in the photovoltaic manually adjustable stand according to the first embodiment.

Fig. 7 is a side view of a photovoltaic manually adjustable mount according to a second embodiment.

Fig. 8A is a front view of the swing arm, and fig. 8B is a side view of the swing arm.

Fig. 9 is a schematic illustration of the adjustment of the position of the spring support in a photovoltaic manually adjustable mount according to a second embodiment.

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 more details for the purpose of providing a thorough understanding of the present invention, but it is obvious that the present invention can be implemented in many other ways different from those described herein, and those skilled in the art can make similar generalizations and deductions based on the practical application without departing from the spirit of the present invention, and therefore, the scope of the present invention should not be limited by the contents of the detailed description.

For example, a first feature described later in the specification may be formed over or on a second feature, and 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. Additionally, reference numerals and/or letters may be repeated in the various examples throughout this disclosure. This repetition is for the purpose of simplicity and clarity and does not in itself dictate a relationship between the various embodiments and/or configurations discussed. 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 used herein, the terms "a", "an" and/or "the" are not to be construed as limiting the singular, but rather are intended to include the plural unless the context clearly dictates otherwise. In general, the terms "comprises" and "comprising" merely indicate that steps and elements are included which are explicitly identified, that the steps and elements do not form an exclusive list, and that a method or apparatus may include other steps or elements.

For convenience in description, spatial relational terms such as "below," "beneath," "below," "under," "over," "upper," and the like may be used herein to describe one element or feature's relationship to another element or feature as illustrated in the figures. It will be understood that these terms of spatial relationship are intended to encompass other orientations of the element in use or operation in addition to the orientation depicted in the figures. For example, if an element in the figures is turned over, elements described as "below" or "beneath" other elements or features would then be oriented "above" the other elements or features. Thus, the exemplary words "below" and "beneath" can encompass both an orientation of up and down. Other orientations of the elements are possible (rotated 90 degrees or at other orientations) and the spatial relationship descriptors used herein should be interpreted accordingly. Further, it will also be understood that when a layer is referred to as being "between" two layers, it can be the only layer between the two layers, or one or more intervening layers may also be present.

It should be noted that these and other figures are given by way of example only and are not drawn to scale, and should not be construed as limiting the scope of the invention as it is actually claimed. Further, the conversion methods in the different embodiments may be appropriately combined.

First embodiment

Fig. 1 and 2 show a right side view and a front view, respectively, of a photovoltaic manually adjustable stand 20.

The photovoltaic manual adjustable bracket 20 comprises a rotating body 202 and a vertical column 201, wherein the rotating body 202 is rotatably supported by the vertical column 201. Rotor 202 may include, for example, a main beam 202a extending in an east-west direction (or fore-aft direction) and a photovoltaic module 202b supported by main beam 202 a. The main beam 202a is rotatably supported by two upright columns 201 which are separately arranged in the east-west direction, so that referring to fig. 2, the rotating body 202 including the main beam 202a can rotate around the rotation center O along the rotation direction C0, that is, the photovoltaic module 202b in the rotating body 202 can be inclined towards the south side (or left side) or inclined from the south side to return to the equilibrium state in fig. 2, so that the inclination angle of the photovoltaic manually adjustable support 20 is manually adjusted at several time intervals in the year according to the solar altitude angle change law, so that the photovoltaic manually adjustable support 20 is in the optimal inclination angle state in the time interval in each time interval.

Referring to fig. 2, the photovoltaic manually adjustable bracket 20 further includes an eccentricity compensation device 10, and the eccentricity compensation device 10 is installed at the north side of the vertical column 201. In fig. 1, the eccentricity compensation device 10 is mounted on the pillar 201 located on the westerner side of the two pillars 201. In another embodiment, the eccentricity compensation device 10 may be installed on the more east-side upright 201 of the two uprights 201, or one eccentricity compensation device 10 may be installed on each of the two uprights 201.

The eccentricity compensation device 10 includes a spring support member 1, a spring 2, a flexible member 3, and a follower rotation member 4. The spring support 1 is provided with an accommodating space S, the spring 2 is arranged in the accommodating space S, the accommodating space S allows and guides the spring 2 to freely stretch and retract in the up-down direction, the lower end 31 of the flexible part 3 is in transmission connection with the lower end of the spring 2, the flexible part 3 penetrates out of the spring 2 in the up-down direction, the upper end 32 is connected with the following rotating part 4, the following rotating part 4 is connected with the rotating body 202, and the following rotating body 202 rotates.

When the following rotor 4 rotates with the rotor 202, the following rotor 4 pulls the spring 2 through the flexible member 3, so that the spring 2 is compressed to generate an elastic force, and an additional torque generated by the rotor 202 due to the misalignment of the center of gravity and the rotation center O is balanced by the elastic force. The spring 2 may be a coil spring as shown. The flexible member 3 may be a steel wire rope, for example.

In the first embodiment, the following rotation member 4 is a sector wheel, and hereinafter, for convenience of description, will be referred to as the sector wheel 4. The sector area of the sector wheel 4 substantially occupies about a quarter of a circle, and since the manually adjustable support 20 only needs to rotate in one direction when the main beam 202a is in the initial horizontal position, the adjustment requirement of the manually adjustable support 20 from about 0 degree to about 70 degrees can be met.

The sector wheel 4 is disposed coaxially with the rotor 202, i.e., the center of rotation of the sector wheel 4 coincides with the center of rotation O of the rotor 202.

An example configuration of the sector wheel 4 is seen in fig. 3A and 3B. The outer periphery 41 of the sector wheel 4 is provided with a wheel groove 42. The sector wheel 4 is also provided with a small cylinder 43 on one side 40 to fix the upper end 32 of the flexible element 3. Referring to fig. 2, the wheel groove 42 is located on the north side of the upright 201, the flexible member 3 is extended out from the upper end of the spring 2 and wound into the wheel groove 42, and extends upward along the wheel groove 42, and finally the upper end 32 of the flexible member 3 is fixed to the one side 40 of the sector wheel 4, specifically, fixed by the small cylinder 43.

An exemplary configuration of the spring support 1 is shown in fig. 4A and 4B, and includes a sleeve 13, a fixed plate 11 located at an upper end of the sleeve 13, and a movable plate 12 located at a lower end of the sleeve 13, the spring 2 being sandwiched by the fixed plate 11 and the movable plate 12, a lower end 31 of the flexible member 3 being connected to the movable plate 12 and transmitting a pulling force to the spring 2 through the movable plate 12, the fixed plate 11 being perforated with a through hole 1a for the flexible member 3 to pass through. The through hole 1a of the fixing plate 11 may allow the flexible member 3 to swing left and right in the through hole 1a, for example, the through hole 1a may be provided as a waist hole to eliminate sliding friction between the flexible member 3 and the fixing plate 11.

The sleeve 13 guides the movable plate 12 to move up and down, and the fixed plate 11, the movable plate 12 and the sleeve 13 define a receiving space S, allowing and guiding the spring 2 to freely expand and contract in the up and down direction. In fig. 2, the flexible member 3 extends upward along a center line L1 (shown in fig. 4A and 4B) of the spring 2 to penetrate the spring 2, and is connected to the follower rotating member 4 after passing through the fixed plate 11 via, for example, a through hole 1a (shown in fig. 4A and 4B).

In the embodiment shown, the spring 2 is in compression, so as to always exert a downward pulling force on the flexible element 3 of the drive connection. In another embodiment, the movable plate of the sleeve can be located above the fixed plate, while the spring 2 sandwiched between the fixed plate and the movable plate is always in tension, so that a downward pulling force can also be always applied to the flexible member 3 in the transmission connection.

In the illustrated embodiment, the spring support 1 is provided with a guide wheel 5 at its upper end (or, at the upper side of the fixed plate 11), and the flexible member 3 is guided by the guide wheel 5 and wound around the wheel groove 42 of the sector wheel 4. The guide wheel 5 can restrict the flexible member 3 from moving in the radial direction of the guide wheel 5. An example configuration of the guide wheel 15 is shown in fig. 5A and 5B, the guide wheel 5 having a wheel groove 51 on its outer periphery for receiving the flexible member 3. The guide wheel 5 is rotatably fixed to the upper side of the fixed plate 11 by inserting a center hole 5a into the shaft body.

In the orthographic projection from south to north, i.e. the state shown in fig. 1, the flexible member 3 and the center line L1 of the spring 2 and the center line L2 of the upright 201 may coincide.

The position between the spring 2 and the main beam 202a, or the distance between the spring support 1 and the upright 201 can be adjusted as appropriate. Referring to fig. 6, the spring support 1 is spaced from the upright 201, and the center line L1 of the spring 2 can be arranged in line with the vertical tangent line of the wheel groove 42 of the sector wheel 4, or the extension direction of the center line L1 of the spring 2 is tangent to the sector wheel 4, so that the steel cable as the flexible member 3 is always in a vertically tightened state, and the guide wheel can be eliminated, and the center line L1 of the spring 2 and the through hole 1a of the fixing plate 11 are on the vertical tangent line of the sector wheel 4, so that the steel cable is always in a vertical state.

Illustratively, it is possible to operate, as shown in fig. 1, by fixing the spring 2 to the upright 201; the guide wheel 5 is arranged at the central position of the upper part of the fixed plate 11 and is aligned with the through hole 1a of the fixed plate 11, and the rotating shaft of the guide wheel 5 is parallel to the main beam 202 a; the sector wheel 4 is fixed on the main beam 202a and is aligned with the central line of the spring 2; the lower end of a steel wire rope as a flexible part 3 is fixed in the middle of the movable plate 12 by an eyelet bolt, the upper end of the steel wire rope passes through the fixed plate 11 from the middle of the spring 2, then winds into the guide wheel 5, then winds into the sector wheel 4 along the guide wheel 5 in an inclined upward direction, and then winds to a small cylinder 43 on the sector wheel 4 along the sector wheel 4. When the steel wire rope is fixed, the spring 2 is pre-pressed properly, so that the steel wire rope is in a stretched state in an initial balance state.

When the main beam 202a starts to rotate by manual adjustment from the initial horizontal state, the wire rope is gradually wound into the wheel groove 42 of the sector wheel 4, at this time, the movable plate 12 is pulled upwards, the spring 2 is compressed, and at the same time, the sector wheel 4 generates a torsional moment by the tangential tension of the wire rope. The larger the angle of rotation of the main beam 202a, the longer the length of the steel wire rope wound into the sector wheel 4, the more the spring 2 is compressed, and the larger the torsion moment applied to the sector wheel 4. On the other hand, from the cause analysis of the eccentric torque, when the rotating body 202 of the manually adjustable bracket 20 is in the initial horizontal state of 0 degree, the section center of gravity and the rotation center O of the rotating body 202 are on the same vertical line, no eccentric torque is generated at this time, when the main beam 202a rotates from 0 degree to south, the vertical line of the section center of gravity and the vertical line of the rotation center O of the rotating body 202 deviate, and at this time, the eccentric torque is generated under the action of gravity. As the turning angle of the main beam 202a gradually increases, the offset distance of the perpendicular line of the center of gravity of the cross section of the rotating body 202 from the perpendicular line of the center of rotation gradually increases, and the eccentric moment generated thereby becomes larger. And the increasing trend of the eccentric torque is just consistent with the increasing trend of the balance torque generated by the eccentric compensation device 10. Therefore, the two can be mutually offset, thereby achieving the purpose of eccentricity compensation.

The eccentricity compensation device 10 has the following advantages: the variation trend of the compensation torque is matched with that of the eccentric torque, so that adverse effects caused by the eccentric torque on manual adjustment of the manual adjustable support 20 can be effectively compensated, the manual adjustment is more convenient, the structure is simple, the transportation workload is small, and the installation is convenient.

Second embodiment

A second embodiment will be described below with reference to fig. 7 to 9, which follows the element numbers and part of the contents of the first embodiment, wherein the same numbers are used to denote the same or similar elements, and the description of the same technical contents is selectively omitted. For the description of the omitted parts, reference may be made to the first embodiment, and the description of the second embodiment will not be repeated.

In the first embodiment, the connecting member 4 of the eccentric compensating device 10 is a sector wheel, while in the second embodiment, the connecting member of the eccentric compensating device 10 is a swing arm 4 ', the upper end of the swing arm 4 ' is disposed along the rotation axis of the rotating body 202, and the swing arm 4 ' is disposed to extend downward toward the north side of the upright 201. The flexible part 3 penetrates out of the upper end of the spring 2 and then is connected with the lower end of the swing arm 4'.

For example, referring to fig. 8A and 8B, the lower end of the swing arm 4' is provided with a rope hole 401 through which a steel wire rope as the flexible member 3 can be passed and fixed. The flexible member 3 is guided by a guide wheel 5 and extends to the lower end of the swing arm 4' to be connected therewith. The swing arm 4 'may be, for example, a C-shaped cross arm, and the flexible member 3 may be fixed to a shaft rod passing through the rope hole 401 to connect the swing arm 4'.

When the swing arm 4' is adopted, the distance between the tension force of the steel wire rope and the rotation center can change along with the angle, so that the effect generated by the change can be considered through the swing arm inclination angle beta (shown in figure 8B) which is reasonably designed, and the better eccentric compensation effect is realized. The method has the advantages of simple manufacture and low cost.

When the swing arm 4' is used as the connecting member, the position between the spring 2 and the main beam 202a or the distance between the spring support 1 and the upright 201 can be adjusted as appropriate. Referring to fig. 9, the spring support 1 is spaced from the upright 201, and the flexible member 3 is not displaced too much radially during the switching process, and the guide wheels can be eliminated.

With the popularization and application of the flat single-axis tracking technology in the construction of photovoltaic power stations, the eccentric compensation device is used as an effective measure for improving the performance of the flat single-axis tracking support, and has wide application prospects in the construction of future photovoltaic power stations.

Although the present invention has been described with reference to the preferred embodiments, it is not intended to limit the present invention, and those skilled in the art can make various changes and modifications without departing from the spirit and scope of the present invention. Therefore, any modification, equivalent changes and modifications made to the above embodiments according to the technical spirit of the present invention, all without departing from the content of the technical solution of the present invention, fall within the scope of protection defined by the claims of the present invention.

Claims (10)

1. The photovoltaic manual adjustable support comprises a rotating body and a stand column for supporting the rotating body, and is characterized by further comprising an eccentric compensation device, wherein the eccentric compensation device is installed on the north side of the stand column and comprises a spring supporting piece, a spring, a flexible piece and a following rotating piece, the spring supporting piece is provided with an accommodating space, the spring is arranged in the accommodating space, the accommodating space allows and guides the spring to freely stretch and retract in the vertical direction, the lower end of the flexible piece is in transmission connection with the lower end of the spring, the flexible piece penetrates out of the spring in the vertical direction, the upper end of the flexible piece is connected with the following rotating piece, and the following rotating piece is connected with the rotating body and rotates along with the rotating body;

when the following rotating part follows the rotating body to rotate, the following rotating part pulls the spring through the flexible part, the spring is forced to be compressed to generate elastic force, and the additional torque generated by the rotating body due to the fact that the center of gravity and the rotating center are not overlapped is balanced by means of the elastic force.

2. The photovoltaic manually adjustable support according to claim 1, wherein the following rotating member is a sector wheel, which is disposed along a rotation axis of the rotating member, and has a wheel groove formed on an outer periphery thereof, the wheel groove is located on a north side of the upright column, the flexible member is extended out from an upper end of the spring, and then wound into the wheel groove, and extends upward along the wheel groove, and finally, the upper end of the flexible member is fixed to one side edge of the sector wheel.

3. The photovoltaic manually adjustable support according to claim 2, wherein the spring support is provided at its upper end with a guide wheel, via which the flexible member is guided to wind into the wheel groove.

4. The photovoltaic manually adjustable mount of claim 2, wherein the flexible member extends upwardly through the spring along a centerline of the spring, the centerline of the spring being disposed collinear with a vertical tangent of the wheel well.

5. The photovoltaic manually adjustable support according to claim 1, wherein the follower rotating member is a swing arm, an upper end of the swing arm is arranged along a rotation axis of the rotating member, and the swing arm extends downward toward a north side of the upright; the flexible piece penetrates out of the upper end of the spring and then is connected with the lower end of the swing arm.

6. The photovoltaic manually adjustable support according to claim 5, wherein the spring support is provided at its upper end with a guide wheel, via which the flexible member is guided and extends to the lower end of the swing arm to which it is connected.

7. The photovoltaic manually adjustable support according to any one of claims 1 to 6, wherein the spring support comprises a sleeve, a fixed plate at an upper end of the sleeve and a movable plate at a lower end of the sleeve, the spring is clamped by the fixed plate and the movable plate, the lower end of the flexible member is connected to the movable plate and transmits the pulling force to the spring through the movable plate, and the fixed plate is provided with a through hole for the flexible member to pass through.

8. The photovoltaic manually adjustable support according to claim 7, wherein the perforations in the fixed plate allow the flexible member to swing side-to-side in the perforations.

9. The photovoltaic manually adjustable support according to any one of claims 1 to 6, wherein the spring is a coil spring.

10. The photovoltaic manually adjustable support according to claim 1, wherein the flexible member coincides with a centerline of the spring and a centerline of the upright in a forward projection from south to north.

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