CN211236698U

CN211236698U - Chain type multi-point linkage photovoltaic support tracking system

Info

Publication number: CN211236698U
Application number: CN202020145161.0U
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: 2020-08-11
Anticipated expiration: 2030-01-22

Abstract

The utility model provides a chain multiple spot linkage photovoltaic support tracker, is in 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 worm gear speed reducer, worm gear speed reducer is through the rotation of its transmission shaft drive big rope sheave to and drive photovoltaic module turn to, the 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 sprocket and the short-link chain drive of a plurality of linkage points the worm gear speed reducer of driven linkage point. According to the system, the torque borne by the photovoltaic main shaft can be effectively dispersed, the bending resistance and torsion resistance of the photovoltaic main shaft are reasonably and fully utilized, and the cost performance of the system is greatly improved under the condition that the tracking angle consistency of the photovoltaic components is ensured through synchronous driving.

Description

Chain type multi-point linkage photovoltaic support tracking system

Technical Field

The utility model relates to a solar photovoltaic array especially relates to a chain multi-point linkage 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 direction (for example, the movement from east to west) of the photovoltaic module is adjusted, so that the sunlight directly irradiates to the 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 photovoltaic support tracker.

According to the utility model discloses a chain multiple spot linkage 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 machine, the rotation of a big rope sheave of worm gear speed reducer machine drive 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 big rope sheave includes semi-circular rim and spoke, the central part of big rope sheave is provided with photovoltaic main shaft mount pad.

The worm gear speed reducer drives the large rope wheel to rotate through a traction rope.

The hauling rope is an iron chain, a short-loop chain, a steel wire rope or a nylon rope.

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 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 big rope sheave, 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 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 large sheave at the point of active coupling shown in fig. 3.

Fig. 5 is a schematic view of an alternate embodiment of the large sheave 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 photovoltaic rack tracking system according to the present invention will be described 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 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 (or similar device with self-locking function) 32 is coupled with the driving device 31, i.e. the worm of the worm gear reducer 32 is driven by the driving device 31 to rotate. In a preferred embodiment, the drive device 31 is, for example, a slewing gear.

Fig. 4 is a perspective view of a large sheave at the active linkage point of the photovoltaic mount tracking system of fig. 3. Referring to fig. 3 and 4 in combination, the large sheave 36 includes, for example, a semicircular rim 361 and spokes 362, and a photovoltaic spindle mount 364 is provided at a central portion of the large sheave. Specifically, photovoltaic spindle mounts 364 are provided at both ends of the semicircular rim 361, for example. The mounting seat 364 is composed of, for example, mounting bars 3641 fixed to both ends of the semicircular rim 361 and a mounting hoop 3642 located in the middle of the mounting bars 3641, and the photovoltaic main shaft 11 is, for example, inserted into the mounting hoop 3642 and fixed by a fixing member (not shown) such as a bolt or a rivet.

Fig. 5 is a schematic view of an alternate embodiment of the large sheave of fig. 4. Referring to fig. 5, the large sheave 36 includes, for example, a semicircular rim 361 ' and spokes 362 ', and the central portion of the large sheave is provided with a photovoltaic spindle mount 364 ', and specifically, the central portion of the spokes 362 ' is provided with a photovoltaic spindle mount 364 ', and the photovoltaic spindle 11 is mounted on the large sheave 36 by, for example, a fixing member such as a bolt or a rivet.

A traction rope 365 (such as a steel wire rope, a short link chain, an iron chain, or a nylon rope) is fixed to each end of the large rope pulley 36, for example, and the traction rope 365 is fitted over a sprocket or a transmission shaft 34 of the worm gear reducer 32, for example. When the driving device 31 operates, the worm gear reducer 32 can be driven to operate, so that the large rope pulley 36 is driven to rotate through the traction rope 365, and the photovoltaic main shaft 11 is further driven to rotate, 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. In a preferred embodiment, the outside surfaces of the semicircular rims 361 and 361' are provided with grooves, and the pulling rope 365 can be embedded in the grooves when in operation, so that the pulling rope 365 can be always in a tensioned state, and the tracking accuracy of the photovoltaic module 12 is ensured.

Still referring to fig. 2 and 3 in combination, fig. 2 shows, for example, a three-point linkage photovoltaic support tracking system, that is, three linkage points 21 to 23 are provided in a photovoltaic support, wherein the linkage point located 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 photovoltaic support tracker in a long distance photovoltaic support, specifically can be according to installation place and environmental condition and decide.

According to the utility model discloses a chain multiple spot linkage 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 by big rope pulley (or similar mechanism that has the enlarged function) 36, big reduction ratio mechanism is constituteed to worm gear speed reducer 32, 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' is arranged a worm gear reducer (or similar device with self-locking function) 32, on the worm of which a sprocket 63 is arranged (for example, sleeved). As in the case of the active linkage point shown in fig. 3, a large rope pulley 36 is provided on the photovoltaic main shaft 11, a traction rope 365 is fixed to each end of the large rope pulley 36, for example, and the traction rope 365 is fitted over a sprocket or a transmission shaft 34 of the worm gear reducer 32, for example.

Unlike the case of the driving linkage point 21 shown in fig. 3, the driving device 31 is not provided on the column 11 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 photovoltaic main shaft 11 is provided with a large rope wheel 36, two ends of the large rope wheel 36 are fixed with a traction rope 365, for example, the traction rope 365 is sleeved on a chain wheel or a transmission shaft 34 of the worm gear reducer 32.

According to the utility model discloses a chain multiple spot linkage 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 being located the rotation reduction gear 32 operation on the initiative linkage point 21, on the one hand can the direct drive photovoltaic main shaft 11's rotation on it, on the other hand can be through short-chain 65 and sprocket 63 with drive power transmission 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 on, 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 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 few embodiments of the chain type multi-point linkage photovoltaic support tracking system of the present invention, according to the above concept of the present invention, those skilled in the art can 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 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 rotation of a big rope sheave of worm gear speed reducer machine drive through its transmission shaft to and drive photovoltaic module turn 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 sprocket and the short-loop 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 large sheave comprises a semi-circular rim and spokes, and a photovoltaic spindle mount is disposed at a central portion of the large sheave.

3. The system of claim 2, wherein the worm gear reducer drives rotation of the large sheave via a pull rope.

4. The system of claim 3, wherein the pull line is an iron chain, a short-link chain, a steel wire rope, or a nylon rope.

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.