CN210780650U - Photovoltaic tracking support with dynamic triangular tracking support structure and system thereof - Google Patents

Abstract

The patent provides a photovoltaic tracking support with a dynamic triangular tracking support structure and a system thereof, which comprises a main beam, a plurality of cross beams, a support structure and a plurality of single upright posts, wherein the main beam is fastened with the plurality of cross beams, at least one cross beam corresponds to one upright post, the solar tracking device is characterized in that the supporting structure is a telescopic structure, one end of the supporting structure is connected with the cross beam, the other end of the supporting structure is connected with the stand column, the cross beam is connected with the corresponding single stand column through the supporting structure to form a dynamic triangular supporting structure, the center of the cross beam can rotate around a stand column connecting shaft, the dynamic triangular tracking supporting structure transmits rotary power through a driving shaft, the power of the driving shaft comes from a motor, a speed reducer or a linkage shaft, and the dynamic triangular tracking supporting structure generates linear telescopic motion due to the driving of the driving shaft, so that the cross beam is pushed to rotate around the stand column, and the function of tracking the running track of the.

Description

Photovoltaic tracking support with dynamic triangular tracking support structure and system thereof

Technical Field

This patent is suitable for solar power plant's solar cell panel's tracking support and system, especially relates to an adjustable solar energy tracking support and system of extensive use.

Background

The solar automatic tracker can help a solar photoelectric or photo-thermal device (such as a photovoltaic cell panel and the like) to better receive sunlight irradiation so as to improve the power generation efficiency and reduce the power generation cost. Common solar trackers, such as photovoltaic, can be roughly divided into two categories, namely single-axis trackers and dual-axis trackers. The single-axis tracker mainly tracks the east-west movement of the sun, and the double-axis tracker can track the east-west movement and the north-south movement of the sun at the same time. Compared with a double-shaft tracker, the single-shaft tracker has the advantages that the system is simple in structure, and most of the benefits brought by double-shaft tracking can be obtained on the basis of using little cost, so that the solar production cost is reduced most effectively.

The traditional solar single-axis tracker generally uses a rotary speed reducer, a linear motor or a motor gear box to drive a photovoltaic module to rotate. The rotary speed reducer is suitable for the conditions of short and narrow photovoltaic array length and low wind pressure. The driving mode of the linear motor has the disadvantages that only a small number of linear motors can be installed to drive the photovoltaic module to rotate, so that the rotating power is insufficient, and the problem of difficulty in synchronization is caused by installation of more linear motors.

The problem that the photovoltaic module is driven to rotate by the motor gear box is that the driving force is small, and the photovoltaic module cannot be applied to a wide-row module form or a large voltage division.

CN106972813A discloses a manual single-axis tracking solar rack, which is shown in fig. 1 and comprises a support, an angle adjusting rack, a solar panel fixing rack and a supporting beam, wherein the support is of an inverted T structure formed by channel steel, a bearing seat is installed at the top of the support and is used for being movably connected with a hollow shaft, and the angle adjusting rack is formed by a semicircular supporting rod and is coaxially fixed with the hole through a bolt. This prior art patent will support the structure of using the stand to change into "T" type mechanism, and the contact point with ground becomes a limit, and support stability improves to some extent, but the ground connection limit of "T" needs extra material cost, leads to product cost to increase, and the competitiveness is not enough. Simultaneously, this structure can't be applied to ground photovoltaic power plant on a large scale because the extra cost of labor that manual regulation caused.

CN106026884A discloses a tracking support structure of a push-pull rod, which is composed of a driving device, a driving arm, a push-pull rod, a driven arm and a component, wherein the push-pull rod is connected with the driven arm, so that the component rotates along with the driving arm to track the angle change of the sun. The advantage of this kind of structure is that only through the rotation of a tracking support of a motor drive center, through push-and-pull rod and follower linkage, can realize driving the synchronous rotation of a row of tracking support simultaneously. The solar tracking support has the defects that the tracking precision of the solar tracking support is caused due to the influence of the length deviation of the push-pull rod, the row spacing installation error and the like on the initial angle of the photovoltaic tracking support, and the generated energy is finally influenced.

US2016/0013751a1 discloses a tracking support system for solar panels comprising: a fixed ground anchor structure; a movable structure comprising a platform for supporting a solar panel, the platform being rotatably mounted on the fixed structure about a main axis of rotation; the mechanical system is used for driving the movable structure to rotate around the main axis of rotation; an actuation system, coupled to its mechanical drive system by a mechanical transmission extending parallel to the main axis of rotation, drives the platform in rotation accordingly. The supporting structure drives one tracking support to rotate, and drives the driven mechanism to realize synchronous rotation of the tracking supports in one row through the transmission mechanism, so that the cost is saved. The patent further shows the manner in which different mechanical transmissions are applied. Meanwhile, the open worm and gear mechanism is adopted, so that the environment is easily influenced, and sand or other foreign matters enter the meshing part to easily cause blockage. In addition, due to the structure of the worm gear, the axial space of the worm gear is vertically crossed, so that the driving center is deviated, and finally, the transmission shaft and the fixed shaft cannot be fixed coaxially, so that the installation and the fixation are complicated. In addition, a threaded rod mechanism driven by a conveyor belt is further provided, referring to fig. 3, the threaded rod is in a fixed length, the lower end of a threaded rod 261 is meshed with a nut 260, the nut 260 is perpendicular to the threaded rod 261 through a horizontal shaft 264 of the A-shaped structure fixing structure 21, the threaded rod can extend out of the fixed nut in the driving process, and the mode is easy for other parts to interfere, and space requirements are large. Therefore, the nut cannot be installed near the upper side of the panel, otherwise the panel may be damaged by being pushed out when the threaded rod is extended upward, and the fixing manner is complicated. The drive mechanism is mounted in a downward position to avoid interference, and the application of the drive mechanism is limited, especially the lower part of the support cannot pass through or the planting is influenced in the complementary or complex terrain of agriculture and horticulture. In addition, the drive train mounted near the ground side is more susceptible to damage from flooding or heavy snow. Meanwhile, the transmission belts are required to pass between the upright columns of different mechanisms, so that the upright columns have to avoid the transmission belts and can only be used for A-type upright columns and cannot be applied to single upright columns, and the cost is high. In addition, the belt transmission precision is low, the tracking precision of the tracking support is influenced, and the power generation capacity of the system is finally influenced.

CN206490639U discloses a solar tracking support structure, see fig. 4, which has a two-axis system, a day angle adjusting driving part can adjust the angle along the central axis clockwise or counterclockwise along the adjusting panel,

and the angle adjusted by adjusting the position of the fixed hook connected to the upright post through the seasonal angle adjustment support bar 6 ', but the angle adjustment range is limited because the length of the adjustment support bar 6' is fixed, and can be performed only in a small range, and the support bar structure is only suitable for seasonal adjustment and is not suitable for tracking the angle of the sun every day. In addition, the number of parts is large, and the structure is complex, so that reliability problems may occur.

These conventional tracker structures are driven manually or by a motor, so that the solar panel follows the angular rotation of the sunlight. The prior art discloses that the combination of a driving device and a driven device is utilized to realize that only one motor is used for driving a row of solar panels, thereby saving the cost. However, these existing structures either use a single column for support and do not have good support for the photovoltaic module row, and thus have poor stability. Or a single upright post is changed into a plurality of upright posts, for example, three sides are combined to form an A-shaped or inverted T-shaped supporting upright post, although a stable supporting structure is adopted, the material cost is increased, and the product lacks competitiveness. In addition, there are several disadvantages associated with mounting the transmission close to the ground side. In addition, in the tracker structure in the prior art, especially in the single rotating beam structure, the rotating beam, the bearing and the bearing box are connected by bolts, so that the adaptability to the ground fluctuation is poor.

For solving above a plurality of technical problem simultaneously, this patent proposes a new scheme, is applied to large-scale solar power plant, has not only realized a drive arrangement drive solar cell panel in a row, and the structure is more stable moreover, the more unipolar tracker that saves of material. This patent scheme has designed the overall structure that supporting structure and self-adaptation bearing were trailed to developments triangle-shaped for this photovoltaic trails support, only uses single stand among the supporting structure is trailed to developments triangle-shaped, has not only practiced thrift the cost, and because triangle-shaped stable structure makes tracking support and system performance more stable moreover, and transmission installs and be close to solar cell panel one side (upside), adaptation environment that can be better. In addition, the ellipsoidal self-adaptive bearing is used, the ground fluctuation can be well adapted, and the adaptability of the photovoltaic tracking support is improved.

Disclosure of Invention

A solar single-shaft tracking support comprising a dynamic triangular tracking support structure comprises a main beam, a plurality of cross beams, a support structure and a plurality of single upright posts, wherein the main beam is fastened with the cross beams, at least one cross beam corresponds to one upright post, the solar tracking device is characterized in that the supporting structure is a telescopic structure, one end of the supporting structure is connected with the cross beam, the other end of the supporting structure is connected with the stand column, the cross beam is connected with the corresponding single stand column through the supporting structure to form a dynamic triangular supporting structure, the center of the cross beam can rotate around a stand column connecting shaft, the dynamic triangular tracking supporting structure transmits rotary power through a driving shaft, the power of the driving shaft comes from a motor, a speed reducer or a linkage shaft, and the dynamic triangular tracking supporting structure generates linear telescopic motion due to the driving of the driving shaft, so that the cross beam is pushed to rotate around the stand column, and the function of tracking the running track of the.

Further, the girder is 1 or 2.

Further, the device also comprises a secondary beam.

And the linkage shaft is connected with the driving shaft of each supporting structure, and when the motor drives the driving shaft of one supporting structure to rotate, the linkage shaft synchronously rotates and drives the driving shafts of other supporting structures to follow up, so that all the supporting structures synchronously move in a telescopic manner. The universal driving shaft is arranged on one side far away from the ground and close to the main beam.

Furthermore, the solar dynamic triangular tracking support structure comprises a transmission mechanism consisting of a gear set and a lead screw, and the drive shaft drives the gear set and the lead screw to rotate when rotating, so that the telescopic motion of the support structure is realized.

Further, the gear set preferably comprises a bevel gear set.

And the linkage shaft is connected with the driving shaft of each supporting structure, and when the motor drives the driving shaft of one supporting structure to rotate, the linkage shaft synchronously rotates and drives the driving shafts of other supporting structures to follow up, so that all the supporting structures synchronously move in a telescopic manner.

Furthermore, the supporting structure also comprises a guide inner sleeve and a guide outer sleeve, and when the screw rod rotates, the guide inner sleeve can be driven to move up and down in the guide outer sleeve in a telescopic manner.

Furthermore, the beam and the upright column are installed together through the ellipsoidal self-adaptive bearing to form a movable fulcrum, one end of the beam and the bottom of the upright column are connected through the support rod to form a triangle, and the length of the support rod changes to form a dynamic triangle.

Furthermore, the cross section of the single upright post is C-shaped or I-shaped.

Furthermore, the ellipsoidal self-adaptive bearing installation part comprises an ellipsoidal self-adaptive bearing core, a support rod, a support frame and a bolt, wherein the center of the ellipsoidal bearing core penetrates through the support rod structure, the bearing core is fixedly connected with the support rod, the bearing core is carried and placed on the support frame, the bearing and the support frame are fixed on the stand column by the bolt, and two ends of the support rod penetrating through the bearing core respectively penetrate through the open holes in the corresponding positions of the cross beams.

Furthermore, both ends of the bearing core are concave or convex ellipsoidal surfaces, the inner side of the upper end of the support frame forms a convex or concave ellipsoidal surface, and the convex or concave ellipsoidal surfaces are matched with the concave or convex ellipsoidal bearing core surface.

Furthermore, at least one opening is arranged on the upright post, and at least one annular hole is formed in the support frame of the ellipsoidal self-adaptive bearing and corresponds to the opening in the upright post, so that the support frame is used for angle adjustment after being fixedly connected with the ellipsoidal self-adaptive bearing to adapt to installation deflection caused by respective reasons on site.

Furthermore, there are two bar holes on the stand, and the support frame lower extreme has two annular holes, and two annular holes correspond with two bar holes on the stand.

Furthermore, both ends of the bearing core are spherical or concave spherical, and one side of the upper end of the support frame close to the bearing core forms a concave or convex spherical surface which is matched with the convex or concave spherical surfaces at both ends of the bearing core.

Furthermore, the ellipsoidal or spherical bearing core and the support rod structure are integrally formed.

Furthermore, two annular holes are formed in the support frame of the ellipsoidal self-adaptive bearing on the upright column, and the annular opening at the lower end is longer than that at the upper end.

Further, the adjusting device comprises an adjusting support 9, wherein a plurality of equally spaced round holes are formed in the adjusting support, the adjusting support is fixedly arranged on the stand column, and the supporting rod structure penetrates through one round hole of the adjusting support to adapt to the change of the end position of the supporting rod structure during the angle adjustment of the ellipsoidal self-adaptive bearing.

Furthermore, the material of the ellipsoidal self-adaptive bearing is cast iron, cast steel or cast aluminum.

Further, still include solar cell panel, solar cell panel installs the top at the girder.

Drawings

Figure 1 manual single axis solar tracking support structure of the prior art

Figure 2 single axis solar tracking mount configuration with slave in prior art

FIG. 3 prior art single axis solar tracking mount configuration with slave and support rods

FIG. 4 prior art solar tracking support structure with support bar adjustment

FIG. 5A schematic view of a solar single-beam tracking rack system of this patent

FIG. 6 is a schematic view of a solar double-beam tracking support system of this patent

FIG. 7 is a schematic view of a solar three-beam tracking support system of this patent

FIG. 8 the scalable support structure in this patent's solar dynamic triangle

FIG. 9 is a cross-sectional view of the solar dynamic triangle of this patent showing the telescoping support structure

FIG. 10 schematic diagram of the operation of the retractable support structure in the solar dynamic triangle of this patent

FIG. 11 is a schematic view of a dynamic triangular tracking support structure for mounting spherical adaptive bearings

FIG. 12 is a schematic view of the installation of the spherical adaptive bearing with the vertical and horizontal beams

FIG. 13 schematic view of installation of spherical adaptive bearing with column and beam and adjustment device

FIG. 14a is a schematic view of a spherical adaptive bearing installation

FIG. 14b is a schematic view of a spherical adaptive bearing installation

1. Photovoltaic module 2, main beam 3, cross beam 4, support structure 5, upright 6, universal driving shaft 7, secondary beam 8 and spherical self-adaptive bearing assembly

41. Base 42, bearing 43, bevel gear 44, bearing 45, drive shaft 46, bevel gear 47, bearing 48, lead screw 49, drive nut 50, outer shell 51, guide outer sleeve 52, guide inner sleeve 53 and drive nut

81. Spherical self-adaptive bearing core 82, spacer 83, support frame 84, retainer ring 85 and bolt

Detailed Description

Fig. 5-7 show a solar tracking system incorporating the dynamic triangular tracking support structure of the present patent. The solar tracking system of fig. 5 includes: photovoltaic module 1, girder 2, crossbeam 3, bearing structure 4, stand 5 and universal driving shaft 6. Two girders are fastened together with a plurality of crossbeams, and the photovoltaic module is installed on the girders. The supporting structure 4 is a telescopic structure, the beam and the corresponding upright post are connected together through the telescopic supporting structure 4 to form a dynamic triangular tracking supporting structure, and the center of the beam can rotate around the connecting shaft of the upright post. One end of the telescopic supporting structure is connected with the cross beam, and the other end of the telescopic supporting structure is connected with the upright post. The drive shaft delivers rotational power to the support structure 4, while the power for the drive shaft comes from the motor. The telescopic supporting structure generates linear motion due to the driving of the driving shaft, and pushes the cross beam to rotate around the upright post, so that the function of tracking the moving track of the sun is achieved.

In addition, the support structure 4 is mounted together with the beams and columns by means of the ellipsoidal adaptive bearings of fig. 11-14, forming a dynamic triangular support structure.

The solar tracking system of fig. 6 differs from that of fig. 5 only in that there are two main beam structures.

The solar tracking system of fig. 7 differs from that of fig. 5 only in that there are two main beam structures and in addition a secondary beam structure centered between the two main beams.

Fig. 8-10 are block and motion diagrams of the dynamic triangle tracking support bar structure of this patent.

In the embodiment of this patent, telescopic bracing piece 4 forms dynamic triangle-shaped stable support structure with stand 5 and crossbeam 3, when having saved the material of support post, has improved bearing capacity and stability of bearing structure, realizes photovoltaic module's rotation direction through the regulation of the length of telescopic bracing piece, realizes tracking the sun.

As shown in fig. 9 and 10, the retractable support rod 4 structure includes: the device comprises a base 41, a bearing 42, a bevel gear 43, a bearing 44, a driving shaft 45, a bevel gear 46, a bearing 47, a lead screw 48, a transmission nut 49, an outer shell 50, a guide outer sleeve 51, a guide inner sleeve 52 and a transmission nut 53. The bearing 42 is mounted on the base and is coupled to the drive shaft 45. The bevel gear 43 is keyed to a drive shaft 45. The bearing 44 is mounted on the base 41 together with the drive shaft 45. The bevel gear 46 is connected with the lead screw 48 through a key, and the bevel gear 46 is meshed with the bevel gear 43 to form a gear pair which can transmit torque so as to drive the lead screw 48 to rotate. The bearing 47 is mounted on the base 41 and cooperates with the lead screw 48. A thrust bearing 49 is mounted on the lead screw 48. The transmission nut 53 is connected with the lead screw, and the outer side of the transmission nut 53 is fastened with the inner side of the guide inner sleeve 52.

A motor and other conventional driving devices are connected with the driving shaft 45, when the driving shaft 45 rotates, the bevel gear 43 is driven to rotate, the bevel gear 46 is driven to synchronously rotate, the bevel gear 46 drives the lead screw to rotate 48, because the bevel gear 46 and the lead screw 48 are fastened together, the lead screw 48 cannot axially move relative to the bevel gear 46, and only can do in-situ rotation motion relative to the base 41, the in-situ rotation of the lead screw 48 can drive the transmission nut 53 to do linear motion along the lead screw 48, so that the inner guide sleeve 52 can move up and down in the outer guide sleeve 51 in a telescopic mode (○ 1- ○ 5 in the above figure is a motion sequence), the whole length of the supporting rod 4 is reduced or increased, and the telescopic effect of the supporting rod 4 is achieved.

The embodiment of fig. 5-7 mounts a dynamic triangular tracking support structure, such as that of fig. 8-10, on each upright. A drive means such as a motor is connected to the drive shaft 45 of one of the support bar 4 arrangements, preferably the centrally located support bar 4 arrangement, and is connected to the drive shaft 45 of the other support bar 4 arrangement by a transmission means such as a linkage 6. Therefore, the driving shaft 45 of the supporting rod 4 structure outputting power to the central position through one motor rotates and drives the linkage shaft 6 to synchronously rotate, so that the driving shafts 45 on other supporting rods 4 synchronously rotate, and the synchronous extension of the supporting rod 4 structure is realized.

The dynamic triangular tracking support structure transmits rotational power through a drive shaft powered by a motor. The dynamic triangular tracking support structure generates linear motion due to the driving of the driving shaft, and pushes the cross beam to rotate around the upright post, so that the function of tracking the running track of the sun is realized.

In the embodiment of fig. 8-10 of the present patent, the inner sleeve is driven to perform a telescopic motion in the outer sleeve by a combination of a gear set formed by two bevel gears and a lead screw, so that the support rod 4 is telescopic. Other numbers, and shapes of gear sets and lead screw combinations may be used to achieve the same function and are within the inventive concepts of this patent.

In addition, in examples 8-10, the driving shaft drives the gear set and the lead screw to rotate so as to drive the inner sleeve to perform telescopic motion in the outer sleeve, so that the support rod is stretched, which is only a preferred embodiment of the patent. It is obvious to those skilled in the art that other structures may be adopted to achieve the extension and retraction of the support rod, as long as the support rod is telescopic and is fixedly connected with the cross beam and the upright post, a dynamic triangular support structure is formed, stable support can be achieved, and materials of the upright post are saved.

The embodiment 8-10 of the patent is provided with the universal driving shafts 6, the universal driving shafts 6 are used for saving driving motors, preferably, only one motor is used for driving the driving shafts 45 of the supporting rod 4 structures at the upright post at the central position to rotate, and the driving shafts 45 of the supporting rod 4 structures at other positions are driven to follow up through the universal driving shafts 6, so that the synchronous extension of the supporting rods 4 can be realized. Obviously, it is also a feasible solution to provide a plurality of motors to drive the rotation of the driving shaft 45 of the support rod 4 structure at a plurality of positions, as long as the motors are controlled to be synchronous.

Fig. 11 is a schematic view of a dynamic triangular tracking support structure with a spherical adaptive system, wherein a main beam of the solar tracking support system is fastened with a plurality of cross beams, one cross beam is connected with one upright post, and the center of the cross beam can rotate around a spherical adaptive bearing at the joint of the upright posts. One end of the dynamic triangular tracking support structure is connected with the cross beam, and the other end of the dynamic triangular tracking support structure is connected with the upright post. Figure 12 shows an ellipsoidal adaptive bearing mounting location.

Fig. 14a shows that the ellipsoidal adaptive bearing assembly comprises an ellipsoidal adaptive bearing core 81, a support rod 86, a spacer (not shown), a support bracket 83, a retainer ring (not shown) and a bolt 85. The ellipsoidal self-adaptive bearing core is arranged between the cross beam and the support frame, the joint part of the interior of the support frame and the convex ellipsoidal bearing core is concave round, the bearing core 81 is placed on the support frame 83, two heads are sleeved with spacer sleeves after the bearing core is arranged, and the bearing core is fastened with the upright post through a bolt 85 after the bearing core is arranged. And then the ellipsoidal self-adaptive bearing mounting part and the cross beam are mounted together, two ends of the bearing core respectively pass through the openings at the corresponding positions of the cross beam, and the two heads are sleeved with the spacer sleeves and blocked by the check rings to prevent the cross beam from axially shifting along the bearing core. Although the embodiments disclose a spacer and retainer assembly to prevent the cross beam from moving axially along the bearing core, the spacer and retainer may be eliminated or other alternative assemblies may be used to prevent the cross beam from moving axially along the bearing core.

Fig. 14b shows the bearing core as a concave ellipsoid, and accordingly the inner part of the support frame is convex in shape and the part of the support frame, which is engaged with the concave ellipsoid, is convex in shape.

The two end faces of the inner concave or outer convex of the ellipsoidal bearing core are matched with the outer convex or inner concave face formed on the inner side of the upper end of the support frame, according to the situation of an installation site, even if the ground surface is uneven, the axis of the ellipsoidal bearing core is inclined at a certain angle, the ellipsoidal bearing is matched with the spherical face, and the ellipsoidal bearing slides in the spherical face to adapt to the topographic relief and the deflection caused by the installation deviation of a product, unlike a common plastic cylindrical surface sliding bearing, and compensates the installation deviation by adopting a gap. The gap does not exist, shaking or vibration cannot occur under the action of wind, noise or abrasion caused by the shaking or vibration cannot occur, and the product is safer and more reliable. The spherical self-adaptive bearing is mainly made of metal, and the problem of aging of a plastic bearing caused by outdoor application is solved. The spherical bearing adopts spherical surface contact relative to other bearings, and has more uniform stress and no stress concentration. The spherical self-adaptive bearing adopts the axis of the spherical bearing core to slide and adjust in the support frame, is simple to realize, does not need adjustment of redundant parts, and saves manpower.

The photovoltaic modules are arranged on the same plane after being installed, and the photovoltaic modules are adapted to the fluctuation of the ground. For this reason, the installation of the dynamic triangular tracking support structure and the upright post needs to be adjusted by using an adjusting bracket 9 as shown in fig. 13, a plurality of round holes with equal intervals are arranged on the adjusting bracket 9, the adjusting bracket is fixedly installed on the upright post, and the support rod 4 structure passes through one round hole of the adjusting bracket so as to adapt to the change of the end position of the support rod 4 during the angle adjustment of the spherical self-adaptive bearing. The spherical self-adaptive bearing mounting part and the beam integrally keep a certain angle and can not change along with the angle change of the dynamic triangular tracking support structure. The spherical self-adaptive bearing is made of metal materials such as cast iron, cast steel, cast aluminum and the like.

Two strip-shaped openings are arranged on the upright post of fig. 14a and 14b, the positions of the two strip-shaped openings correspond to the two annular openings on the support frame of the bearing respectively, and the bearing and the upright post are fixed through screws. The opening on the stand is the bar, is convenient for adjust the height of fixed ball valve. Two annular openings, the lower opening is larger than the upper opening, so that the installation deflection caused by the respective reasons in the field can be adapted.

In fig. 14a and 14b, two openings are provided on the upright column, but one opening or a plurality of openings can be provided, and an annular hole or a plurality of annular holes are also provided on the support frame of the ellipsoidal self-adaptive bearing and correspond to the openings on the upright column so as to adapt to installation deviation caused by respective reasons on site.

The photovoltaic tracking support with the dynamic triangular tracking support structure comprises a single-beam photovoltaic tracking support, a double-beam photovoltaic tracking support and three tracking supports of a three-beam photovoltaic tracking support.

This patent does not restrict the length of girder, and this patent is suitable for on a large scale, and when the girder is longer, increase as required and support stand, crossbeam and scalable supporting structure, the setting of universal driving shaft etc. can.

The beneficial effects of this patent

1) The lead screw is the telescopic structure, utilizes lead screw adjustment support angle, when pursuing the sun every day, and the lead screw can form stable dynamic triangle-shaped structure with stand, crossbeam, provides good stability for the subassembly when photovoltaic module trails the operation.

2) The combination of the internal staggered shaft transmission and the lead screw of the dynamic triangular tracking support structure and the condition that one row of assemblies use the driving shaft to connect a plurality of dynamic triangular tracking support structures together can realize the effect that only one driving motor is used and one row of assemblies can synchronously follow up, thereby saving the driving cost.

3) Simple structure, low cost, because dynamic triangle-shaped bearing structure is stable, need not to design the support column into more stable structures such as A type or type of falling T, only use a stand can obtain stable support, moreover because dynamic triangle-shaped bearing structure has still shared the pressure that the stand bore correspondingly, single stand of this patent compares with traditional single stand, and the requirement to the power that single stand bore is lower, has still further saved the use of material, easily transportation and installation and maintenance.

4) The driving and transmission are positioned below the battery board and protected by rain, snow or direct sunlight of the battery board. Meanwhile, the lower passing of the tracking system is improved, and the system can be more widely suitable for complex terrains (such as agricultural light complementation). The drive system is not at risk of flooding relative to other systems.

5) Compared with the traditional mode that the connection mode among the rotating beam, the bearing and the bearing box is mainly bolted connection, the ground which cannot well adapt to fluctuation of the beam is used, the spherical self-adaptive bearing and the dynamic triangular tracking support structure can better adapt to fluctuation of the ground, the adaptability of the photovoltaic tracking support is improved, the installation and debugging are more convenient, and the service life is longer.

Claims (21)

1. The utility model provides a support is trailed to photovoltaic that contains developments triangle-shaped trails bearing structure, including the girder, and a plurality of crossbeam, bearing structure, a plurality of single stand, the girder is in the same place with the fastening of a plurality of crossbeam, a crossbeam corresponds with a stand, a serial communication port, bearing structure is scalable structure, its one end is connected with the crossbeam, another end is connected with the stand, the crossbeam links together through bearing structure with single stand that corresponds and forms a dynamic triangle-shaped trails bearing structure, the crossbeam center can be rotatory around stand connecting axle department, bearing structure transmits rotatory power through the drive shaft, the power of drive shaft comes from the motor, reducing gear box or universal driving shaft, bearing structure produces sharp concertina movement owing to the drive of drive shaft, thereby promote the crossbeam rotatory around the stand, thereby reach the function of tracking the solar orbit.

2. The photovoltaic tracking support with the dynamic triangular tracking support structure of claim 1, wherein the number of the main beams is 1 or 2.

3. The photovoltaic tracking support including a dynamic triangular tracking support structure of claim 2, further comprising a secondary beam.

4. The photovoltaic tracking support with the dynamic triangular tracking support structure as claimed in one of claims 1 to 3, further comprising a linkage shaft, wherein the linkage shaft is connected with the driving shaft of each support structure, and when the driving shaft of one support structure is driven to rotate by the motor, the linkage shaft synchronously rotates and drives the driving shafts of other support structures to follow up, so that all the support structures synchronously extend and retract.

5. The photovoltaic tracking support with the dynamic triangular tracking support structure of claim 4, wherein the linkage shaft is mounted on a side away from the ground and near the main beam.

6. The photovoltaic tracking support with the dynamic tracking support structure of claim 1-3, wherein the solar dynamic tracking support structure comprises a transmission mechanism consisting of a gear set and a lead screw, and the rotation of the driving shaft drives the gear set and the lead screw to rotate, thereby realizing the telescopic motion of the support structure.

7. The photovoltaic tracking support including a dynamic triangularly tracking support structure of claim 6, wherein the gear set comprises a bevel gear set.

8. The photovoltaic tracking support with the dynamic triangular tracking support structure as claimed in claim 6, further comprising a linkage shaft, wherein the linkage shaft is connected with the driving shaft of each support structure, and when the motor drives the driving shaft of one support structure to rotate, the linkage shaft synchronously rotates and drives the driving shafts of other support structures to follow up, thereby realizing synchronous telescopic motion of all the support structures.

9. The photovoltaic tracking stent with the dynamic triangular tracking support structure as claimed in claim 7 or 8, wherein the support structure further comprises an inner guide sleeve and an outer guide sleeve, and when the lead screw rotates, the inner guide sleeve is driven to move up and down telescopically in the outer guide sleeve.

10. The photovoltaic tracking support with the dynamic triangular tracking support structure as claimed in any one of claims 1 to 3, wherein the movable supporting point is formed by mounting the beam and a column together through an ellipsoidal adaptive bearing, the supporting rod connects one end of the beam and the bottom of the column to form a triangle, and the length of the supporting rod changes to form a dynamic triangle.

11. The photovoltaic tracking support with the dynamic triangular tracking support structure of claim 10, wherein the cross-sectional shape of the single upright is C-shaped or i-shaped.

12. The photovoltaic tracking support with the dynamic triangular tracking support structure as claimed in claim 10, wherein the ellipsoidal adaptive bearing mounting part comprises an ellipsoidal adaptive bearing core, a support rod, a support frame and a bolt, the support rod structure is penetrated through the center of the ellipsoidal bearing core, the bearing core is tightly connected with the support rod, the bearing core is placed on the support frame, the bearing and the support frame are fixed on the vertical column by the bolt, and two ends of the support rod penetrating through the bearing core are respectively penetrated through the openings at corresponding positions on two edges of the beam.

13. The photovoltaic tracking support with the dynamic triangular tracking support structure as claimed in claim 12, wherein the two ends of the bearing core are concave or convex ellipsoids, and the inner side of the upper end of the support frame forms a convex or concave ellipsoid, and the convex or concave ellipsoid is matched with the concave or convex ellipsoid of the bearing core.

14. The photovoltaic tracking support with the dynamic triangular tracking support structure as claimed in claim 10, wherein the vertical column is provided with at least one opening, and the support frame of the ellipsoidal adaptive bearing is provided with at least one annular hole corresponding to the opening of the vertical column for adjusting the angle after being fixedly connected with the ellipsoidal adaptive bearing so as to adapt to the installation deflection caused by each reason on site.

15. The photovoltaic tracking support with the dynamic triangular tracking support structure as claimed in claim 12, wherein the vertical column has two bar holes, and the support frame has two annular holes at the lower end thereof, the two annular holes corresponding to the two bar holes of the vertical column.

16. The photovoltaic tracking support with the dynamic triangular tracking support structure as claimed in claim 13, wherein two ends of the bearing core are spherical or concave spherical, and one side of the upper end of the support frame near the bearing core forms a concave or convex spherical surface to match with the convex or concave spherical surfaces at two ends of the ball bearing core.

17. The photovoltaic tracking support including a dynamic triangularly-shaped tracking support structure as claimed in claim 12, wherein the ellipsoidal or spherical bearing core is integrally formed with the support bar structure.

18. The photovoltaic tracking support with the dynamic triangular tracking support structure as claimed in claim 15, wherein the support frame of the ellipsoidal adaptive bearing on the vertical column has two annular holes, and the lower annular opening is longer than the upper annular opening.

19. The photovoltaic tracking support with the dynamic triangular tracking support structure as claimed in any one of claims 12, 13, 15, 17, and 18, comprising an adjusting support with a plurality of equally spaced circular holes, wherein the adjusting support is fixedly mounted on the vertical column, and the support rod structure passes through one of the circular holes of the adjusting support to adapt to the position change of the end of the support rod structure during the angular adjustment of the ellipsoidal adaptive bearing.

20. The photovoltaic tracking support with dynamic triangular tracking support structure of claim 10, wherein the material of the ellipsoidal adaptive bearing is cast iron, cast steel or cast aluminum.

21. A system comprising a photovoltaic tracking rack comprising a dynamic triangular tracking support structure according to any one of claims 1 to 20, further comprising a solar panel mounted above the main beam.

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