CN108181935B - Single-shaft solar tracker - Google Patents
Single-shaft solar tracker Download PDFInfo
- Publication number
- CN108181935B CN108181935B CN201810190885.4A CN201810190885A CN108181935B CN 108181935 B CN108181935 B CN 108181935B CN 201810190885 A CN201810190885 A CN 201810190885A CN 108181935 B CN108181935 B CN 108181935B
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- Prior art keywords
- upright post
- swing rod
- transmission shaft
- solar tracker
- steel wire
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- 230000005540 biological transmission Effects 0.000 claims abstract description 36
- 238000004804 winding Methods 0.000 claims abstract description 29
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 28
- 239000010959 steel Substances 0.000 claims abstract description 28
- 239000003638 chemical reducing agent Substances 0.000 claims description 10
- 238000003825 pressing Methods 0.000 claims description 10
- 125000006850 spacer group Chemical group 0.000 claims description 8
- 230000000149 penetrating effect Effects 0.000 claims description 7
- 230000006835 compression Effects 0.000 claims description 6
- 238000007906 compression Methods 0.000 claims description 6
- 238000010008 shearing Methods 0.000 description 3
- 238000005452 bending Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 229910000838 Al alloy Inorganic materials 0.000 description 1
- 230000003044 adaptive effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
- G05D3/00—Control of position or direction
- G05D3/12—Control of position or direction using feedback
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02S—GENERATION OF ELECTRIC POWER BY CONVERSION OF INFRARED RADIATION, VISIBLE LIGHT OR ULTRAVIOLET LIGHT, e.g. USING PHOTOVOLTAIC [PV] MODULES
- H02S20/00—Supporting structures for PV modules
- H02S20/30—Supporting structures being movable or adjustable, e.g. for angle adjustment
- H02S20/32—Supporting structures being movable or adjustable, e.g. for angle adjustment specially adapted for solar tracking
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/50—Photovoltaic [PV] energy
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Automation & Control Theory (AREA)
- Transmission Devices (AREA)
- Photovoltaic Devices (AREA)
Abstract
The invention provides a single-axis solar tracker, which comprises a plurality of upright posts; the top of each upright post is provided with a swinging rod which is parallel to each other and can rotate around the top of the corresponding upright post on a vertical surface; the upper surface of the swing rod is provided with a plurality of supporting beams along the direction vertical to the swing rod, and the upper surfaces of the supporting beams are paved with solar electric plates; the motor is used for driving the transmission shaft to rotate; the transmission shaft is provided with a winding drum at the lower part of each swing rod, two steel wire ropes are wound on the winding drum along opposite directions, two fixed pulleys are respectively arranged at two ends of the bottom of each swing rod, and the ends of the two steel wire ropes are fixed on the upright post after respectively bypassing the two fixed pulleys. The single-shaft solar tracker is simple in structure and strong in wind resistance.
Description
Technical Field
The invention relates to a solar power generation device, in particular to a single-shaft solar tracker.
Background
The common single-shaft solar tracker is characterized in that a motor drives a solar electric plate frame to rotate through a transmission mechanism such as a gear, a chain or a worm gear so as to achieve the sun tracking effect, and for a large-size solar tracker (such as a solar tracker with the length of tens of meters or even hundreds of meters), the output torque of the motor can be amplified only by a method of increasing the transmission stage number so as to ensure that the solar tracker can be reliably driven, and the structure is more and more complicated along with the increase of the transmission stage number, so that the manufacturing and maintenance cost is increased, and the working reliability is reduced; in addition, if the solar tracker is disturbed by wind power, because the rotation moment is concentrated at the rotating shaft of the solar panel frame, when the solar tracker is large in size, the huge concentrated moment easily causes structural damage at the rotating shaft.
It can be seen that there is a need for improvements and improvements in the art.
Disclosure of Invention
In view of the above-mentioned shortcomings of the prior art, an object of the present invention is to provide a single-axis solar tracker that is simple in structure and strong in wind resistance.
In order to achieve the above purpose, the invention adopts the following technical scheme:
a single axis solar tracker comprising a plurality of posts; the top of each upright post is provided with a swinging rod which is parallel to each other and can rotate around the top of the corresponding upright post on a vertical surface; the upper surface of the swing rod is provided with a plurality of supporting beams along the direction vertical to the swing rod, and the upper surfaces of the supporting beams are paved with solar electric plates; the motor is used for driving the transmission shaft to rotate; the transmission shaft is provided with a winding drum at the lower part of each swing rod, two steel wire ropes are wound on the winding drum along opposite directions, two fixed pulleys are respectively arranged at two ends of the bottom of each swing rod, and the ends of the two steel wire ropes are fixed on the upright post after respectively bypassing the two fixed pulleys.
In the single-axis solar tracker, the swing rod comprises two C-shaped beams which are arranged in parallel, and two spacer blocks which are respectively connected between the end parts of the two C-shaped beams; the wing plates of the two C-shaped beams are arranged in opposite directions, a rotating shaft is arranged between the web plates of the two C-shaped beams, and the rotating shaft penetrates through a first bearing arranged at the top of the upright post; the two fixed pulleys of the swing rod are respectively fixed at the bottoms of the two spacer blocks.
In the single-shaft solar tracker, the transmission shaft is a square rod; the winding drum is coaxially provided with a square hole which is matched with the square rod, and the transmission shaft is arranged in the square hole in a penetrating mode.
In the single-axis solar tracker, the winding drum comprises two winding parts symmetrically arranged at two sides of the upright post and a cylinder part connected with the two winding parts; the cylinder part is rotatably arranged on the upright post in a penetrating way through the second bearing.
In the single-shaft solar tracker, two fixed pulleys of the swing rod are respectively arranged at two sides of a longitudinal symmetrical plane of the swing rod.
In the single-shaft solar tracker, the upright posts are I-shaped beams, the second bearings are arranged in the inner holes of an annular mounting plate, the annular mounting plate is fixed on the web plates of the upright posts, and through holes which are adaptive to the inner holes of the second bearings are formed in the web plates of the upright posts.
In the single-shaft solar tracker, the motor drives the transmission shaft to rotate through a worm gear reducer; the output end of the worm gear reducer is fixedly connected with one of the reels, and a mounting frame is arranged on the upright post corresponding to the reel, and the worm gear reducer is fixed on the mounting frame.
In the single-shaft solar tracker, the transmission shaft is formed by connecting a plurality of sections of sub-transmission shafts through universal joints.
In the single-shaft solar tracker, a tensioner for tensioning the steel wire ropes is respectively connected between the two steel wire ropes and the corresponding upright posts; each tensioner comprises a cylinder body, a cover body in threaded connection with the cylinder body, a compression spring arranged in the cylinder body, and a pressing block which is slidably arranged in the cylinder body and props against the compression spring; the end part of the cylinder body, which is far away from the cover body, is provided with a through hole for a steel wire rope to pass through, and the steel wire rope passes through the through hole and is connected to the pressing block; the cover body is provided with a connecting ring, and a connecting rope is connected between the upright post and the connecting ring.
In the single-shaft solar tracker, the end part of the steel wire rope is provided with a screw rod; the screw rod is in threaded connection with the pressing block, and one end of the screw rod penetrates through the pressing block and is connected with a nut.
The beneficial effects are that:
the invention provides a single-shaft solar tracker, which drives a winding drum to rotate through a transmission shaft, so that two steel wire ropes are respectively wound and unwound simultaneously, and all swinging rods are dragged to synchronously rotate, so that the aim of sun tracking is achieved; when the wind power is received, the moment of the wind power is balanced by the moment generated by the tension of the steel wire rope, and the rotating shaft of the swing rod is only subjected to shearing force, so that the damage caused by overlarge bearing moment can be avoided, and the wind resistance is high.
Drawings
Fig. 1 is a perspective view of a single axis solar tracker according to the present invention, in a bottom view.
Fig. 2 is a front view of a single axis solar tracker provided by the present invention.
Fig. 3 is a side view of a single axis solar tracker provided by the present invention.
Fig. 4 is a schematic diagram of a connection structure between a swing rod and an upright in the single-axis solar tracker provided by the invention.
Fig. 5 is an enlarged view of the S portion in fig. 1.
Fig. 6 is an enlarged view of the portion E in fig. 2.
Fig. 7 is an enlarged view of the portion F in fig. 2.
Fig. 8 is an enlarged view of a portion G in fig. 2.
Fig. 9 is a schematic structural diagram of a tensioner in the single axis solar tracker provided by the present invention.
Detailed Description
The invention provides a single-axis solar tracker, which is further described in detail below by referring to the accompanying drawings and examples in order to make the purpose, technical scheme and effect of the invention clearer and more definite. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the invention.
Referring to fig. 1-9, the present invention provides a single axis solar tracker comprising a plurality of posts 1; the top of each upright post is provided with a swinging rod 2 which are parallel to each other and can rotate around the top of the corresponding upright post on a vertical surface; the upper surface of the swing rod is provided with a plurality of supporting beams 3 along the direction vertical to the swing rod, and the upper surfaces of the supporting beams are paved with solar electric plates 4; the device also comprises a transmission shaft 5 rotatably penetrating the upright post 1 and a motor 6 for driving the transmission shaft 5 to rotate; the transmission shaft is provided with a winding drum 7 at the position below each swing rod 2, two steel wire ropes 8 are wound on the winding drum along opposite directions, two fixed pulleys 9 are respectively arranged at two ends of the bottom of each swing rod, and the ends of the two steel wire ropes 8 are fixed on the upright post 1 after respectively bypassing the two fixed pulleys 9.
When the sun-tracking device works, the winding drum 7 is driven to rotate through the transmission shaft 5, so that the two steel wire ropes 8 are wound and unwound simultaneously, all the swing rods 2 are dragged to rotate synchronously, the sun-tracking purpose is achieved, and as the fixed pulleys 9 are fixed at the two ends of the swing rods, the arm of force of the driving force is large, all the swing rods can be reliably dragged to rotate through small pulling force, and therefore a complex multi-stage transmission mechanism is not needed, and the structure is simple; when the wind power is received, the moment of the wind power is balanced by the moment generated by the tension of the steel wire rope, and the rotating shaft of the swing rod is only subjected to shearing force, so that the damage caused by overlarge bearing moment can be avoided, and the wind resistance is high. In this embodiment, the bolster is a C-shaped aluminum alloy beam to reduce weight.
Specifically, as shown in fig. 1, 4 and 7, the swing rod 2 comprises two parallel C-shaped beams 2.1 and two spacer blocks 2.2 respectively connected between the ends of the two C-shaped beams; the wing plates of the two C-shaped beams are arranged in opposite directions, a rotating shaft 2.3 is arranged between the web plates of the two C-shaped beams, and the rotating shaft 2.3 is arranged in a first bearing 1.1 arranged at the top of the upright post 1 in a penetrating way; the two fixed pulleys 9 of the swing rod 2 are respectively fixed at the bottoms of the two spacer blocks 2.2. The swing rod of the structure is high in strength and low in weight, the fixed pulley is arranged at the spacer block, the structure strength is high, and the force transmitted by the fixed pulley can be effectively born. To further reduce weight and moment of inertia, the spacer particles may be hollow as shown.
Further, the transmission shaft 5 is a square rod; the winding drum 7 is coaxially provided with a square hole which is matched with the square rod, and the transmission shaft is arranged in the square hole in a penetrating way so as to prevent the winding drum from slipping on the transmission shaft.
As shown in fig. 8, the winding drum 7 comprises two winding parts 7.1 symmetrically arranged at two sides of the upright 1, and a cylinder part 7.2 connecting the two winding parts; the cylindrical portion 7.2 is rotatably fitted through the second bearing 7.3 to the upright 1. Therefore, the shearing force applied to the winding drum is completely borne by the upright post and cannot be transmitted to the transmission shaft 2, so that bending moment cannot be generated on the transmission shaft, the transmission shaft is ensured to be only subjected to torque, and the transmission shaft is prevented from bending deformation due to the force of the winding drum. Here, in order to facilitate the assembly and disassembly of the reel 7, the cylindrical portion 7.2 and the two winding portions 7.1 are arranged independently of each other, and the winding portions are connected with the cylindrical portion by keys; or one winding part is integrally arranged with the cylinder part, and the other winding part is independently arranged and connected with the cylinder part in a key way.
Further, the two fixed pulleys 9 of the swing rod 2 are respectively arranged at two sides of the longitudinal symmetrical plane of the swing rod, as shown in fig. 7, so as to reduce the included angle between the steel wire rope and the rotation plane of the swing rod, thereby reducing the component force of the steel wire rope in the direction perpendicular to the rotation plane of the swing rod, reducing the torque applied to the upright column and preventing the torsional deformation of the upright column.
Preferably, the upright 1 is an i-beam, the second bearing 7.3 is installed in an inner hole of an annular installation plate 7.4, the annular installation plate is fixed on a web plate of the upright 1, and a through hole 1.2 which is adapted to the inner hole of the second bearing 7.3 is formed in the web plate of the upright. The annular mounting plate may be, but is not limited to, bolted to the web of the column. The adoption of the working beam can ensure the strength and further reduce the weight; the second bearing is fixed through the annular mounting plate, so that the problem that the web plate of the upright post is too thin to effectively fix the second bearing is solved.
In this embodiment, as shown in fig. 2 and 6, the motor 6 drives the transmission shaft 5 to rotate through a worm gear reducer 10; the output end of the worm gear reducer is fixedly connected with one of the reels 7, and the upright post 1 corresponding to the reel is provided with a mounting frame 1.3, and the worm gear reducer is fixed on the mounting frame. The arrangement of the worm gear reducer can improve the output torque of the motor, is favorable for driving a larger solar tracker through a smaller motor, has a reverse self-locking function, can only be driven by a worm to rotate, and cannot drive the worm to rotate, so that the transmission shaft can only be driven by the motor to rotate, the transmission shaft cannot reversely drive the motor to rotate, and the force on the steel wire rope cannot enable the transmission shaft to rotate when all the solar panel receives wind power, so that the orientation of the solar panel is stable.
Preferably, the transmission shaft 5 may be formed by connecting multiple segments of sub-transmission shafts through universal joints. Because the straightness is difficult to guarantee for longer transmission shaft, can lead to rotating unsmoothly even to appear the jamming, here, divide into the multistage to the transmission shaft, and connect through the universal joint, can solve this problem.
Further, as shown in fig. 3 and 9, a tensioner 11 for tensioning the steel wire ropes is respectively connected between the two steel wire ropes 8 and the corresponding upright posts 1; each tensioner comprises a cylinder 11.1, a cover body 11.2 in threaded connection with the cylinder, a compression spring 11.3 arranged in the cylinder, and a pressing block 11.4 slidably arranged in the cylinder and propped against the compression spring; the end part of the cylinder 11.1 far away from the cover body 11.2 is provided with a through hole 11.5 for a steel wire rope to pass through, and the steel wire rope passes through the through hole to be connected to the pressing block; the cover body 11.2 is provided with a connecting ring 11.6, and a connecting rope 11.7 is connected between the upright post 1 and the connecting ring 11.6. The tensioning device can ensure that the steel wire rope is always in a tensioning state, and the positioning accuracy of the sun tracking angle is prevented from being influenced due to the fact that the steel wire rope is loosened.
Preferably, as seen in fig. 9, the end of the wire rope 8 is provided with a screw 8.1; the screw is in threaded connection with the press block 11.4, one end of which passes through the press block and is connected with a nut 14.8. The tightness can be adjusted according to actual needs by screwing the screw, and the nut 14.8 can prevent the screw from rotating in the use process to influence the tightness.
It will be understood that equivalents and modifications will occur to those skilled in the art based on the present invention and its spirit, and all such modifications and substitutions are intended to be included within the scope of the present invention.
Claims (4)
1. A single axis solar tracker comprising a plurality of posts; the top of each upright post is provided with a swinging rod which is parallel to each other and can rotate around the top of the corresponding upright post on a vertical surface; the upper surface of the swing rod is provided with a plurality of supporting beams along the direction vertical to the swing rod, and the upper surfaces of the supporting beams are paved with solar electric plates; the motor is used for driving the transmission shaft to rotate; a winding drum is arranged at the position below each swing rod on the transmission shaft, two steel wire ropes are wound on the winding drum along opposite directions, two fixed pulleys are respectively arranged at two ends of the bottom of each swing rod, and the ends of the two steel wire ropes are fixed on the upright post after respectively bypassing the two fixed pulleys; the swing rod comprises two C-shaped beams which are arranged in parallel, and two spacer blocks which are respectively connected between the end parts of the two C-shaped beams; the wing plates of the two C-shaped beams are arranged in opposite directions, a rotating shaft is arranged between the web plates of the two C-shaped beams, and the rotating shaft penetrates through a first bearing arranged at the top of the upright post; the two fixed pulleys of the swing rod are respectively fixed at the bottoms of the two spacer blocks; the transmission shaft is a square rod; the winding drum is coaxially provided with a square hole which is matched with the square rod, and the transmission shaft is arranged in the square hole in a penetrating way; the winding drum comprises two winding parts symmetrically arranged on two sides of the upright post and a cylinder part connected with the two winding parts; the cylinder part is rotatably arranged on the upright post in a penetrating way through the second bearing; the two fixed pulleys of the swing rod are respectively arranged at two sides of the longitudinal symmetrical plane of the swing rod; the upright post is an I-shaped beam, the second bearing is arranged in an inner hole of an annular mounting plate, the annular mounting plate is fixed on a web plate of the upright post, and a through hole which is matched with the inner hole of the second bearing is formed in the web plate of the upright post; the motor drives the transmission shaft to rotate through a worm gear reducer; the output end of the worm gear reducer is fixedly connected with one of the reels, and a mounting frame is arranged on the upright post corresponding to the reel, and the worm gear reducer is fixed on the mounting frame.
2. The single axis solar tracker of claim 1 wherein said drive shaft is formed of multiple segments of sub drive shafts connected by universal joints.
3. The single-axis solar tracker according to any one of claims 1-2, wherein a tensioner for tensioning the wire ropes is connected between each of the two wire ropes and the corresponding upright; each tensioner comprises a cylinder body, a cover body in threaded connection with the cylinder body, a compression spring arranged in the cylinder body, and a pressing block which is slidably arranged in the cylinder body and props against the compression spring; the end part of the cylinder body, which is far away from the cover body, is provided with a through hole for a steel wire rope to pass through, and the steel wire rope passes through the through hole and is connected to the pressing block; the cover body is provided with a connecting ring, and a connecting rope is connected between the upright post and the connecting ring.
4. A single axis solar tracker according to claim 3, wherein the end of the wire rope is provided with a screw; the screw rod is in threaded connection with the pressing block, and one end of the screw rod penetrates through the pressing block and is connected with a nut.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810190885.4A CN108181935B (en) | 2018-03-08 | 2018-03-08 | Single-shaft solar tracker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810190885.4A CN108181935B (en) | 2018-03-08 | 2018-03-08 | Single-shaft solar tracker |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108181935A CN108181935A (en) | 2018-06-19 |
| CN108181935B true CN108181935B (en) | 2024-04-02 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810190885.4A Active CN108181935B (en) | 2018-03-08 | 2018-03-08 | Single-shaft solar tracker |
Country Status (1)
| Country | Link |
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| CN (1) | CN108181935B (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109164835B (en) * | 2018-10-19 | 2024-03-08 | 江苏瑞智中和新能源科技有限公司 | Rope transmission structure and solar tracker |
| CN110209206A (en) * | 2019-04-25 | 2019-09-06 | 上海能耀新能源科技有限公司 | A kind of flexible support photovoltaic tracking bracket with self-locking function |
| CN113110610A (en) * | 2021-04-01 | 2021-07-13 | 上海施步新能源科技有限公司 | Solar tracking system |
| WO2023114981A2 (en) | 2021-12-16 | 2023-06-22 | FTC Solar, Inc. | Solar tracker system including a frame assembly |
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2018
- 2018-03-08 CN CN201810190885.4A patent/CN108181935B/en active Active
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| CN102646735A (en) * | 2012-04-05 | 2012-08-22 | 中国恩菲工程技术有限公司 | Rotating bracket for solar battery assembly and solar battery system |
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| Publication number | Publication date |
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| CN108181935A (en) | 2018-06-19 |
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