CN211151902U

CN211151902U - Chain type multi-point linkage single-shaft photovoltaic support tracking system

Info

Publication number: CN211151902U
Application number: CN202020145333.4U
Authority: CN
Inventors: 吴建农; 郑道涛; 周孝水; 周会晶; 彭毅
Original assignee: Tonking New Energy Technology Jiangshan Co ltd
Current assignee: Tonking New Energy Technology Jiangshan Co ltd
Priority date: 2020-01-22
Filing date: 2020-01-22
Publication date: 2020-07-31
Anticipated expiration: 2030-01-22

Abstract

Chain multiple spot linkage unipolar photovoltaic support tracker, including setting up a plurality of linkage points of photovoltaic support, a plurality of linkage points are including the initiative linkage point that is located central point and the driven linkage point that is located this initiative linkage point side, initiative linkage point and driven linkage point are provided with the worm gear speed reducer machine of taking self-locking function, worm gear speed reducer machine drives the rotation of main shaft steering mechanism through its transmission shaft to and drive photovoltaic module's turning to, initiative linkage point still is provided with drive arrangement, drive arrangement with the worm gear speed reducer machine hookup of initiative linkage point, and through installing the sprocket and the short-link chain drive of a plurality of linkage points the worm gear speed reducer machine of driven linkage point. The system can effectively disperse the torque borne by the photovoltaic main shaft, reasonably and fully utilize the bending resistance and torsion resistance of the photovoltaic main shaft, and greatly improve the cost performance of the system under the condition that the synchronous driving ensures the consistency of the tracking angles of the photovoltaic modules.

Description

Chain type multi-point linkage single-shaft photovoltaic support tracking system

Technical Field

The utility model relates to a solar photovoltaic array especially relates to a chain multi-point linkage unipolar photovoltaic support tracker.

Background

When the solar photovoltaic panel, especially a large-area solar photovoltaic panel array or a photovoltaic system, is installed on the ground or on the water surface, the movement of the sun needs to be tracked in real time, and the orientation (for example, the movement from east to west) of the photovoltaic module is adjusted, so that sunlight directly irradiates to a light receiving plane of the photovoltaic panel, and the photovoltaic power generation amount is improved. The existing photovoltaic array tracking support, such as the tracking support 10 shown in fig. 1, all of the tracking linkage mechanisms are made of steel tube type profiles, and particularly, the photovoltaic main shafts 11 are rigidly connected and transmit torque linkage, so that two main forces of bending resistance and torsion resistance are required to be borne simultaneously. That is, in the case of determining the north-south span, for bending resistance, although the bending resistance is generally stronger as the section is larger, the material consumption is also large, so the section of the main shaft should have an optimal value; for torsion resistance, according to the torsion principle, under the same condition, the torsion angle is in a direct proportion relation with the length of the main shaft, that is, the longer the main shaft is, the larger the torsion angle is, and the torsion angle of the main shaft simultaneously influences the consistency of the tracking angle of the photovoltaic module 12. Therefore, for the condition that the span of the photovoltaic array in the north-south direction is large or the number of photovoltaic modules is large, the cross-sectional area of the photovoltaic main shaft needs to be enlarged to improve the torsion angle.

Thus, on the one hand, in order to improve the torsion resistance of the photovoltaic main shaft, the cross-sectional area of the photovoltaic main shaft needs to be increased; on the other hand, the cross-sectional area of the photovoltaic principal axis has an optimum value with respect to the bending resistance of the photovoltaic principal axis, whereas the cross-sectional area of the photovoltaic principal axis is not, as is usually the case, an optimum value for the bending resistance of the principal axis when the principal axis torsion resistance is satisfied, i.e. the latter has a large margin. Therefore, the photovoltaic support tracking system in the prior art does not fully balance the bending resistance and the torsion resistance of the photovoltaic main shaft, and the cost performance of the photovoltaic support tracking system is greatly reduced. In addition, because the torque is maximum at the position where the photovoltaic main shaft driving device (such as a rotary speed reducer or a similar device with a self-locking function) is installed, the performance requirements of the devices such as the rotary speed reducer are greatly increased, and greater potential safety hazards exist. Once the photovoltaic support is damaged, the entire photovoltaic array is destroyed.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to overcome prior art's above-mentioned defect, provide a chain multiple spot linkage unipolar photovoltaic support tracker.

According to the utility model discloses a chain multiple spot linkage unipolar photovoltaic support tracker, be in including setting up a plurality of linkage points of photovoltaic support, a plurality of linkage points are including the driven linkage point that is located the initiative linkage point that central point put and is located this initiative linkage point side, initiative linkage point and driven linkage point are provided with the worm gear speed reducer of taking self-locking function, the worm gear speed reducer is through the rotation of its transmission shaft drive main shaft steering mechanism to and drive turning to of photovoltaic module, initiative linkage point still is provided with drive arrangement, drive arrangement with the worm gear speed reducer hookup of initiative linkage point, and through installing the sprocket and the short-link chain drive of a plurality of linkage points the worm gear of driven linkage point.

The main shaft steering mechanism comprises a worm gear speed reducer and main shaft connecting pieces arranged on two sides of the worm gear speed reducer.

The spindle attachment includes a base and a sleeve.

The end part of the photovoltaic main shaft is sleeved on the shaft sleeve, and the base is fixed on a transmission shaft of the worm gear speed reducer.

The chain wheel is arranged on a worm of the worm gear speed reducer and is driven by the short-ring chain.

The short-chain forms the driving linkage point and the driven linkage point into a synchronous driving device of a closed loop circuit through the chain wheels arranged on the driving linkage point and the driven linkage point.

The driving device is a driving device with a speed reducer.

The driving device is a rotary speed reducer or a speed reducing motor.

And a tensioning device is arranged beside the chain wheel to enable the short-chain to be in a tensioned state all the time.

The multipoint linkage is three-point linkage, wherein the linkage point in the middle is a driving linkage point, and the linkage points respectively arranged on two sides of the driving linkage point are driven linkage points.

The photovoltaic support is provided with one or a plurality of linkage points.

According to the utility model discloses a chain multiple spot linkage unipolar photovoltaic support tracker can effectively disperse the moment of torsion that the photovoltaic main shaft bore, accomplishes the bending resistance antitorque performance of reasonable, make full use of photovoltaic main shaft, guarantees under the condition of photovoltaic module tracking angle uniformity at synchronous drive, has improved the price/performance ratio of system greatly. Further, the worm gear speed reducer of every linkage point has self-locking function, when external load reverse transmission, only the dispersion is at every linkage point, even the worm gear speed reducer of single linkage point damages, also only influence the support of single linkage point, all the other supports do not receive the tie-up, avoid chain damage, and constitute big reduction ratio mechanism by main shaft steering mechanism, worm gear speed reducer and/or slewing reducer, drive arrangement only need provide minimum moment of torsion, so can reduce the requirement to drive arrangement on the one hand, on the other hand can fully guarantee photovoltaic support tracking system's safety.

Drawings

Fig. 1 is a schematic diagram showing a photovoltaic support of the prior art.

Fig. 2 is a schematic overall view showing a chain type multi-point linkage single-shaft photovoltaic support tracking system according to the present invention.

Fig. 3 is an enlarged view of an active linkage point of one embodiment of the photovoltaic mount tracking system shown in fig. 2.

Fig. 4 is a perspective view of a spindle steering mechanism at the active linkage point of the photovoltaic mount tracking system of fig. 3.

Fig. 5 is a schematic view of one spindle attachment in the spindle steering mechanism of fig. 4.

Fig. 6 is an enlarged view of the driven linkage point of one embodiment of the photovoltaic mount tracking system shown in fig. 2.

Fig. 7 is an enlarged view of a driven linkage point of another embodiment of the photovoltaic mount tracking system shown in fig. 2.

Detailed Description

The following detailed description of the chained multi-point linkage single-shaft photovoltaic support tracking system according to the present invention will be made with reference to the accompanying drawings and embodiments, and it will be understood by those skilled in the art that the embodiments shown in the drawings are merely schematic and are used to help understand the basic concept of the present invention.

Fig. 2 is a schematic overall view showing a chain type multi-point linkage single-shaft photovoltaic support tracking system according to the present invention. Referring to fig. 2, fig. 2 shows, for example, a three-point linkage photovoltaic support tracking system, and

reference numerals

21, 22 and 23 denote three linkage points of a linkage mechanism. The linkage points 21 are, for example, active linkage points, which are, for example, located in the middle of the respective linkage points. The linkage points 22 and 23 are, for example, slave linkage points, which are, for example, arranged on the left and right sides of the master linkage point 21. According to an embodiment of the present invention, at the position of the three linkage points, for example, the rigid connection of the photovoltaic main shaft 11 can be disconnected. According to another embodiment of the present invention, at the position of the three linkage points, for example, under the condition that the external load such as wind pressure and snow pressure of the installation environment is small, i.e. the external condition is good, the rigid connection of the photovoltaic main shaft 11 may not be disconnected. Those skilled in the art will appreciate that a photovoltaic support may also employ more than three linkage points, i.e., a multi-point linkage photovoltaic support, and the specific configuration may depend on the north-south span and the local environment of the photovoltaic support.

Fig. 3 is an enlarged view of the active linkage point of the photovoltaic mount tracking system shown in fig. 2. With combined reference to fig. 2 and 3, a driving motor with a reducer or similar driving device 31 and a worm gear reducer (or similar device with a self-locking function) 32 are arranged on the pillar 30 of the photovoltaic support. The worm gear reducer 32 is coupled to the driving device 31, that is, the worm of the worm gear reducer 32 is driven to rotate by the driving device 31. In a preferred embodiment, the drive device 31 is, for example, a slewing gear.

Fig. 4 is a perspective view of a spindle steering mechanism at the active linkage point of the photovoltaic mount tracking system of fig. 3. Fig. 5 is a schematic view of one spindle attachment in the spindle steering mechanism of fig. 4. Referring to fig. 3 to 5 in combination, the spindle steering mechanism 40 includes, for example, a worm gear reducer 32 and spindle attachments 42 mounted on both sides of the worm gear reducer 32. The spindle connector 42 includes, for example, a base 421 and a shaft sleeve 422, an end of the photovoltaic spindle 11 is, for example, sleeved on the shaft sleeve 422 and fixed to the shaft sleeve 422 by, for example, screwing or riveting, and the base 421 is, for example, fixed to a transmission shaft of the worm gear reducer 32 by a connection manner such as screwing. When the driving device 31 is operated, the worm gear reducer 32 can be driven to operate, so that the main shaft connecting piece 42 rotates, and the photovoltaic main shaft 11 is driven to turn, so that the photovoltaic module 12 mounted on the photovoltaic main shaft 11 can track the operation of the sun in the east and west directions, for example. Although the photovoltaic main axis 11 is shown as a main axis having a rectangular cross-section, it will be appreciated by those skilled in the art that in a preferred embodiment, the photovoltaic main axis may be a main axis having a circular cross-section, for example.

Still referring to fig. 2 and 3 in combination, fig. 2 shows, for example, a three-point linkage single-shaft photovoltaic support tracking system, that is, three linkage points 21 to 23 are provided in a photovoltaic support, wherein the linkage point in the middle is the active linkage point 21, and the linkage points 22 and 23 are respectively arranged on both sides of the linkage point 21. As shown in fig. 2, a photovoltaic support strut 30' is bridged between the active linkage point 21 and the passive linkage point 22 or 23. It will be appreciated by those skilled in the art that two or more of the struts 30 'may be bridged between them, or no other struts 30' may be bridged, for example, depending on the material of the photovoltaic mast and the environmental conditions of the application site. According to the utility model discloses a further embodiment, for example also can set up two or more three point linkage unipolar photovoltaic support tracker in a long distance photovoltaic support, specifically can be according to installation place and environmental aspect.

According to the utility model discloses a chain multiple spot linkage unipolar photovoltaic support tracker, the worm gear speed reducer 32 that is located initiative linkage point 21 has self-locking function, when the reverse transmission of external load, only the dispersion is at every linkage point, even the worm gear speed reducer of single linkage point damages, also only influence the support of single linkage point, all the other supports do not receive and lead, avoid chain damage, and main shaft steering mechanism 40 includes that worm gear speed reducer 32 constitutes big reduction ratio mechanism, drive arrangement only need provide minimum moment of torsion, the event can reduce the requirement to drive arrangement on the one hand, on the other hand can fully guarantee photovoltaic support tracker's safety.

Fig. 6 is an enlarged view of one driven linkage point of the photovoltaic mount tracking system shown in fig. 2. Referring to fig. 2, 3 and 6 in combination, fig. 6 shows, for example, a slave link point 22 to the left of the master link point 21 of fig. 3. On the top of the column 30' there is for example a worm gear reducer (or similar device with self-locking function) 32, on the worm of which there is arranged (for example, a socket) a sprocket 63. As in the case of the active linkage point shown in fig. 3, a spindle steering mechanism 40 is provided on the photovoltaic spindle 11, and when the driving device 31 of the active linkage point 21 operates, the worm gear reducer 32 on the driven linkage point 22 can be driven to operate through the chain wheel 63 and the short link chain 65, so that the photovoltaic spindle 11 is rotated through the spindle connecting member 42, and further, the photovoltaic spindle 11 is steered, so that the photovoltaic module 12 mounted on the photovoltaic spindle 11 of the driven linkage point can track the operation of the east-west sun, for example.

Unlike the case of the driving linkage point 21 shown in fig. 3, the driving device 31 is not provided on the strut 30 of the driven linkage point 22 shown in fig. 6, but a short link chain 65 (or other type of iron chain) is provided on its sprocket 63. Referring to fig. 3 and fig. 6 in combination, at the same time, for example, a sprocket 63 is also disposed on the worm gear reducer 32 of the driving linkage point 21 shown in fig. 3, and a short-link chain 65 connects the sprocket 63 on the driving linkage point 21 with the sprocket 63 on the driven linkage point 22, so that when the driving device 31 of the driving linkage point 21 operates, it can transmit the driving force to the worm of the worm gear reducer (or similar device with self-locking function) 32 of the driven linkage point 22 through the short-link chain 65 and the sprocket 63 while it drives the photovoltaic main shaft on the driving linkage point to rotate, thereby further driving the photovoltaic main shaft 11 on the driven linkage point 22 to rotate.

Fig. 7 is an enlarged view of another driven linkage point of the photovoltaic mount tracking system of fig. 2. Referring to fig. 2, 3 and 7 in combination, fig. 7 shows, for example, a slave link point 23 located to the right of the master link point 21 shown in fig. 3. On the top of the column 30' there is arranged a worm gear reducer (or similar device with self-locking function) 32, the latter worm being for example sleeved with a sprocket 63. The main shaft steering mechanism 40 is arranged on the photovoltaic main shaft 11, when the driving device 31 of the driving linkage point 21 operates, the worm and gear reducer 32 on the driven linkage point 22 can be driven to operate through the chain wheel 63 and the short-link chain 65, so that the photovoltaic main shaft 11 is driven to steer through the rotation of the main shaft connecting piece 42, and the photovoltaic module 12 mounted on the photovoltaic main shaft 11 of the driven linkage point can track the operation of the sun in the east and west directions, for example.

According to the utility model discloses a chain multiple spot linkage unipolar photovoltaic support tracker, one end of short-chain 65 cup joints on the sprocket 63 of driven linkage point 22, another cup joints on the sprocket 63 of driven linkage point 23, the middle part of short-chain is for example cup jointed or worn to establish on the sprocket 63 of initiative linkage point 21, just so constituted the synchronous drive in a closed loop circuit, when the worm gear speed reducer 32 that is located on initiative linkage point 21 moves, on the one hand can the direct drive photovoltaic main shaft 11's rotation on it, on the other hand can transmit drive power to the worm of the worm gear speed reducer (or similar equipment of taking self-locking function) 32 of driven linkage point 22 and 23 through short-chain 65 and sprocket 63, thereby further drive the rotation of the photovoltaic main shaft on driven linkage point 22 and 23. That is, the short link chain 65 forms the driving and driven link points into a synchronous driving device of a closed loop circuit by the sprockets 63 provided on the driving and driven link points 21 and 22. Therefore, according to the utility model discloses a chain multiple spot linkage unipolar photovoltaic support tracker can effectively disperse the moment of torsion that photovoltaic main shaft 11 bore, accomplishes the bending resistance antitorque performance of reasonable, make full use of photovoltaic main shaft, guarantees under the condition of photovoltaic module tracking angle uniformity at synchronous drive, has improved the price/performance ratio of system greatly.

In a preferred embodiment, for example, a tensioning device (not shown) is disposed beside the chain wheel 63 of the driving linkage point 21 and the driven linkage point 22, so that the short-chain 65 can be always in a tensioned state, and stable self-locking of the photovoltaic support tracking system is ensured.

According to another embodiment of the present invention, the chain wheel 63 and the short link chain 65 can be replaced by other similar transmission mechanisms.

The above is only a plurality of embodiments of the chain multi-point linkage single-shaft photovoltaic support tracking system of the present invention, according to the above-mentioned conception of the present invention, the skilled person in the art can also make various changes and transformations thereto, but these changes and transformations all belong to the scope of the present invention.

Claims

1. The utility model provides a chain multiple spot linkage unipolar photovoltaic support tracker, is in including setting up a plurality of linkage points of photovoltaic support, its characterized in that, a plurality of linkage points are including the initiative linkage point that is located central point and the driven linkage point that is located this initiative linkage point side, initiative linkage point and driven linkage point are provided with the worm gear speed reducer machine of taking self-locking function, the worm gear speed reducer machine drives the rotation of main shaft steering mechanism through its transmission shaft to and drive photovoltaic module's turning to, the initiative linkage point still is provided with drive arrangement, drive arrangement with the worm gear speed reducer machine hookup of initiative linkage point, and through installing the sprocket and the short-link chain drive of a plurality of linkage points the worm gear speed reducer machine of driven linkage point.

2. The system of claim 1, wherein the spindle steering mechanism includes the worm gear reducer and spindle attachments mounted on both sides of the worm gear reducer.

3. The system of claim 2, wherein the spindle attachment comprises a base and a hub.

4. The system of claim 3, wherein an end portion of the photovoltaic main shaft is sleeved on the shaft sleeve, and the base is fixed on a transmission shaft of the worm gear reducer.

5. The system of claim 2 or 3, wherein the sprocket is provided on a worm of the worm gear reducer, and the sprocket is driven by the short-loop chain.

6. The system as claimed in claim 5, wherein the short link chain forms the driving and driven link points into a synchronous driving device of a closed loop circuit by the sprockets provided at the driving and driven link points.

7. A system according to claim 1 or 2, wherein the drive device is a drive device with a speed reducer.

8. The system of claim 7, wherein the drive device is a slew reducer or a gear motor.

9. A system as claimed in claim 6, wherein tension means are provided alongside the sprockets to keep the short link chain in tension at all times.

10. The system of claim 1 or 2, wherein the multi-point linkage is a three-point linkage, wherein the linkage point located in the middle is a driving linkage point, and the linkage points listed on both sides of the driving linkage point are driven linkage points.

11. The system according to claim 1 or 2, characterized in that the photovoltaic support is provided with one or several multiple linkage points.