CN211151898U

CN211151898U - Universal joint multi-axis linkage photovoltaic support tracking system

Info

Publication number: CN211151898U
Application number: CN202020145402.1U
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

Gimbal multi-axis linkage photovoltaic support tracker, including setting up a plurality of linkage points of photovoltaic support, a plurality of linkage points include initiative linkage point and driven linkage point, initiative linkage point and driven linkage point are provided with the worm gear speed reducer of taking self-locking function, the rotation of a big rope sheave of worm gear speed reducer 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 hookup of initiative linkage point, and through installing the gimbal of a plurality of linkage points and the drive of hookup steel pipe the worm gear speed reducer of driven linkage point. The main shafts of the system are directly or indirectly driven by torque, so that the stress of the system structure is more reasonable, the superposition of harmful loads is greatly reduced, the instability problem and the fatigue failure problem are avoided, the safety performance of the system is improved, and meanwhile, the multi-shaft linkage of a large-span and multiple components can be realized, and the system can adapt to more complex terrains.

Description

Universal joint multi-axis linkage photovoltaic support tracking system

Technical Field

The utility model relates to a solar photovoltaic array especially relates to an universal joint multiaxis 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 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 tracking linkage mechanism of the prior photovoltaic array tracking bracket, such as the tracking bracket 10 shown in fig. 1, adopts a push rod 101 of a steel pipe type profile, and the push force and the pull force generated by the push rod control the steering of the photovoltaic module. Although, for tensile forces, the steel pipe will only be damaged when it is subjected to tensile forces exceeding the strength limit of the steel pipe material; for the thrust, the steel pipe can be damaged when bearing the thrust action exceeding the strength limit of the steel pipe material, and the steel pipe also has the problem of pressure lever stability, namely the steel pipe has the instability phenomenon, and the thrust required by the steel pipe instability is inversely proportional to the square of the length of the steel pipe, namely the longer the steel pipe is, the smaller the thrust required by the instability is and the reduction of the square root is. Therefore, for the project with large east-west span, the sectional area of the steel pipe needs to be greatly increased under the condition that the steel pipe bears the same pushing force or pulling force, so as to avoid the instability problem. And to the more project of unipolar subassembly, the steel pipe needs to undertake bigger thrust or pulling force, under the unchangeable condition of east west to the span, needs the sectional area of greatly increased steel pipe equally, just can avoid the unstability problem. The cost performance of steel pipe linkage is greatly reduced, and the steel pipe has the risk of instability.

In addition, the linkage steel pipe used as the push rod can bear the alternate action of larger tension and pressure, and is easy to generate fatigue fracture; when the rotation angle of the linkage steel pipe exceeds more than 50 degrees, one component force is large, and the support is not easy to track; the linkage steel pipes are rigidly connected, and once a row of supports in the array are damaged, a chain reaction is easy to occur, so that all the supports in the same connection are damaged; the steel pipe linkage rigid connection cannot adapt to the change of the terrain; in addition, the push rod of the linkage steel pipe has high requirements on the driving device.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to overcome prior art's above-mentioned defect, provide a universal joint multiaxis linkage photovoltaic support tracker.

According to the utility model discloses an universal joint multiaxis linkage photovoltaic support tracker, be in including setting a plurality of linkage points of photovoltaic support, a plurality of linkage points are including initiative linkage point and driven linkage point, initiative linkage point and driven linkage point are provided with the worm gear speed reducer of taking self-locking function, the rotation of worm gear speed reducer through its transmission shaft drive big rope sheave 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 hookup of initiative linkage point, and through installing the universal joint and the hookup steel pipe drive of a plurality of linkage points the worm gear speed reducer 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 universal joint is arranged on a worm of the worm gear speed reducer and is driven by the connecting steel pipe.

The connecting steel pipe forms a serial synchronous driving device with the driving linkage point and the driven linkage point through the universal joints 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.

The outer side surface of the semicircular wheel rim is provided with a groove, and the traction rope is embedded in the groove.

According to the utility model discloses a universal joint multiaxis linkage photovoltaic support tracker, direct or indirect drive by the moment of torsion between the main shaft makes the system architecture atress more reasonable, and the power that does not have the track of the support produces, reduces harmful load's stack greatly, and very big lowering system avoids unstability problem and fatigue failure problem to drive equipment's requirement, when improving system security performance, can realize the multiaxis linkage of large-span, multicomponent to can adapt to more complicated topography.

Drawings

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

Fig. 2 is a schematic overall view showing a gimbal multi-axis 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 schematic view of the coupling of the universal joint shown in fig. 6 to the coupling steel pipe.

Detailed Description

The following detailed description of the gimbal multi-axis linkage photovoltaic support tracking system according to the present invention will be provided in conjunction with 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 illustrative and are provided to help understand the basic concepts of the present invention.

Fig. 2 is a schematic overall view showing a gimbal multi-axis linkage photovoltaic support tracking system according to the present invention. See fig. 2, in which 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 to 25 are, for example, slave linkage points, which are, for example, arranged on the left and right sides of the master linkage point 21. In other words, for example, a single row of trusses in the north-south direction is used as an independent linkage point, wherein the driving device is set as the driving linkage point 21, and the driving device is not set as the driven linkage point. Those skilled in the art will appreciate that a photovoltaic support, for example, in the east-west direction, may also employ more than 5 linkage points, i.e., a multi-point linkage photovoltaic support, and the specific configuration may depend on the span of the photovoltaic support and the local environment.

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, a photovoltaic spindle mount 364 'is provided at a central portion of the large sheave, and specifically, a photovoltaic spindle mount 364' is provided at a central portion where the spokes 362 converge, 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 sheave 36, for example, and the traction rope 365 is fitted around the transmission shaft 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 surface of the semicircular rim 361 is provided with a groove, and the pulling rope 365 can be embedded in the groove 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.

According to the utility model discloses a universal joint multi-axis linkage photovoltaic support tracker, because big rope sheave 36 and worm gear speed reducer 32 are rotatory for moment of torsion output and drive photovoltaic main shaft until the cooperation with drive arrangement 31, the push rod drive of ratio is more reasonable in the transmission structure, so does not have adverse factor to the production of the stable power of support. Moreover, the cooperation of the large sheave 36 and the worm gear reducer 32 up to the driving device 31 can apply external loads to a single linkage point, for example, to a limited extent, or can greatly reduce the effect of load superposition, so that the safety of the photovoltaic support and even the entire photovoltaic array can be improved compared with the prior art, and simultaneously, multi-point linkage with a larger span can be realized to reduce the production cost.

According to the utility model discloses a universal joint multi-axis linkage photovoltaic support tracker has reduceed the requirement of support to drive arrangement by big rope pulley 36 and worm gear speed reducer 32 until the reduction gears who constitutes with drive arrangement 31, and on the other hand, every row of photovoltaic support is relatively independent, can effectively protect the supporting structure not receive destruction, promptly, avoids the damage of a support to make other supports damage simultaneously in succession, guarantees whole photovoltaic array's safe operation.

Still referring to fig. 2 and 3, fig. 2 shows, for example, a four-axis linkage photovoltaic support tracking system or a five-point linkage photovoltaic support tracking system, that is, five linkage points 21 to 25 are disposed in the photovoltaic support, wherein the linkage point located in the middle is the active linkage point 21, and the linkage points 22 to 25 are respectively arranged on two sides of the linkage point 21. It will be understood by those skilled in the art that the illustration in fig. 2 is not meant to limit the invention, in other words, the linkage points in the bracket may be more than or less than five, for example, i.e. the linkage axes between the linkage points may be more than or less than four, depending on the material of the steel pipe and the environmental conditions of the application site.

According to the utility model discloses a universal joint multi-axis 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 to 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, a worm gear reducer (or similar device with self-locking function) 32 is disposed on the top of the pillar 30', a large rope pulley 36 is disposed on the photovoltaic main shaft 11, a traction rope 365 is fixed to each end of the large rope pulley 36, and the traction rope 365 is sleeved on a transmission shaft of the worm gear reducer 32.

In contrast to the case of the master linkage point shown in fig. 3, the drive device 31 is not provided on the strut 30' of the slave linkage point shown in fig. 6, but rather, for example, a universal joint 63 and a coupling steel tube 65 (or another type of transmission mechanism) are provided on the worm of the worm gear reducer 32. Referring to fig. 3 and 6 in combination, at the same time, for example, universal joints 63 are also provided on the driving devices 31 and the worm gear reducers 32 respectively arranged at two sides of the driving linkage point 21 shown in fig. 3, and the driving linkage point 21 is connected with the driven linkage points 22 through the connecting steel pipes 65 connected with the universal joints 63, so that when the driving device 31 of the driving linkage point 21 operates, the driving device can transmit driving force to the worm of the worm gear reducers (or similar devices with self-locking function) 32 of the driven linkage points 22 to 25 through the universal joints 63 and the connecting steel pipes 65 while driving the photovoltaic main shaft on the driving linkage point to rotate, thereby further driving the rotation of the photovoltaic main shaft 11 on the driven linkage points.

According to the utility model discloses a universal joint multi-axis linkage photovoltaic support tracker, hookup steel pipe 65 couples together the worm gear speed reducer 32 of the linkage point of neighbouring through universal joint 63, just so constituted the synchronous drive of a series connection, when being located the operation of drive arrangement 31 on initiative linkage point 21, on the one hand can the rotation of the photovoltaic main shaft 11 on it of direct drive, on the other hand can transmit drive power to the worm gear speed reducer (or similar equipment of taking self-locking function) 32 of driven linkage point 22 to 25 on through universal joint 63 and hookup steel pipe 65, thereby further drive the rotation of photovoltaic main shaft 11 on driven linkage point 22 to 25. That is, the coupling steel pipe 65 forms the driving and driven linkage points as a series synchronous driving device through the universal joints 63 provided at the driving and driven linkage points 21 and 22 to 25.

Fig. 7 is an enlarged schematic view of the coupling of the universal joint shown in fig. 6 to the coupling steel pipe. Referring to fig. 7, one end of the universal joint 63 is coupled to the worm of the worm gear reducer 32, and the other end is coupled to the coupling steel pipe 65. According to the utility model discloses a universal joint multi-axis linkage photovoltaic support tracker because the hookup steel pipe only transmits minimum moment of torsion, need not bear pulling force and thrust like the push rod, so the problem of unstability and fatigue failure has been overcome. Moreover, due to the transmission flexibility of the universal joint, the universal joint can adapt to more complex installation terrains.

The above is only a few embodiments of the gimbal multi-axis linkage photovoltaic support tracking system of the present invention, according to the above-mentioned concepts of the present invention, those skilled 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 universal joint multi-axis linkage photovoltaic support tracker, is in including setting up a plurality of linkage points of photovoltaic support, a serial communication port, a plurality of linkage points are including initiative linkage point and driven linkage point, 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'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 universal joint of a plurality of linkage points and the drive of hookup steel pipe 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 universal joint is arranged on a worm of the worm gear reducer, and the universal joint is driven through the connecting steel pipe.

6. The system of claim 5, wherein the coupling steel pipe forms the driving linkage point and the driven linkage point into a series synchronous driving device through the universal joints arranged on the driving linkage point and the driven linkage point.

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. The system of claim 3, wherein the semi-circular rim has a groove in an outer surface thereof, and the pull cord is embedded in the groove.