CN106774440B - Double-shaft integrated sunlight tracking driving device capable of eliminating off-axis error - Google Patents
Double-shaft integrated sunlight tracking driving device capable of eliminating off-axis error Download PDFInfo
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- CN106774440B CN106774440B CN201611253205.6A CN201611253205A CN106774440B CN 106774440 B CN106774440 B CN 106774440B CN 201611253205 A CN201611253205 A CN 201611253205A CN 106774440 B CN106774440 B CN 106774440B
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- heliostat
- driving mechanism
- box body
- driving
- transmission box
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- 230000005540 biological transmission Effects 0.000 claims abstract description 59
- 239000003638 chemical reducing agent Substances 0.000 claims description 12
- 230000033001 locomotion Effects 0.000 claims description 3
- 230000005484 gravity Effects 0.000 abstract description 8
- 238000010248 power generation Methods 0.000 description 4
- 239000006096 absorbing agent Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000007747 plating Methods 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 229910052709 silver Inorganic materials 0.000 description 1
- 239000004332 silver Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
- G05D3/00—Control of position or direction
- G05D3/10—Control of position or direction without using feedback
- G05D3/105—Solar tracker
Abstract
The invention relates to a double-shaft integrated sunlight tracking driving device for eliminating off-axis errors, which comprises a driving box body and a U-shaped upright post support, wherein two ends of the driving box body are fixed on the U-shaped upright post support through flanges, one end of the driving box body is connected with the flanges, fixing members are arranged on two sides of the driving box body, rotating shafts are arranged on the rotating shafts, driving members are arranged on the rotating shafts, heliostat supports are arranged on two ends of the rotating shafts, a driving mechanism I and a driving mechanism II are arranged on a driving box bottom plate in the driving box body, the driving mechanism I runs around the fixing members, and the driving mechanism II drives the driving members to run. The invention has simple structure and reasonable design, and designs the double axes of the heliostat, namely the virtual axes and the rotating shafts, to be coplanar and intersected, so that the centrifugal distance between the two axes of the heliostat is zero, and the rotating shafts are directly and fixedly connected with the heliostat support, thereby greatly reducing the distance between the center of gravity of the heliostat and the intersection point of the two transmission shafts, and effectively reducing the eccentric distance between the center of gravity of the heliostat and the rotating shafts.
Description
Technical Field
The invention relates to a double-shaft integrated sunlight tracking driving device for eliminating off-axis errors, and belongs to the technical field of heliostat driving.
Background
Heliostats are very important devices in the initial stages of energy conversion in tower solar thermal power generation systems. In a tower system, typically thousands of heliostats are employed, with each individual control system continuously tracking solar radiation energy and focusing the energy onto a heat absorber at the top of the tower for use as thermal energy. Therefore, the design of heliostats is one of important links of the design of a tower type solar thermal power generation system, and is a foundation for reducing power generation cost and realizing commercialization of solar thermal power generation.
Heliostats are typically comprised of a bracket, a drive train, a mirror, and a control system. The rack is a supporting portion of the entire heliostat, stably connecting the individual components together. The reflector is fixed on the bracket, and the incident light of the sun is reflected to the heat absorber of the heat absorbing tower through the adjustment of the transmission system at any time, and most manufacturers now adopt ultra-white glass silver plating mirrors. The control system controls the heliostat to automatically track the sun in a azimuth and pitching double-shaft driving mode.
At present, the tower heliostat mainly has 4 typical biaxial tracking modes: 1) A spin-pitch tracking mode in which the fixed axis points to the target position; 2) A vertical upward azimuth-elevation tracking mode of the fixed shaft; 3) A pitch-tilt tracking mode in which the fixed shaft is horizontally placed; 4) The virtual fixed shaft is horizontally arranged along east-west direction in a polar axis tracking mode. Among the four classical heliostat tracking modes, the three modes of spin-pitch, azimuth-pitch and polar axis tracking have limitation on the pointing direction of a fixed shaft, namely the pointing direction target, the vertical upward direction and the east-west direction, and the fixed shaft in the pitch-tilt mode only needs to be parallel to the horizontal plane, so that the pointing direction is not limited correspondingly. Therefore, the sun tracking stroke of the heliostat transmission system and the sun tracking swing range of the heliostat can be reduced by adjusting the installation azimuth, so that the arrangement of a relatively compact heliostat field is facilitated, the ground utilization rate and the condensation efficiency of the heliostat field are improved, and the heliostat transmission system is a good application prospect mode.
However, compared to the most commonly used heliostat with traditional azimuth-elevation motion, the heliostat with elevation-inclination dual-axis tracking mode is relatively less practical, wherein the typical heliostat is a Stellio heliostat of SBP company, and the central support of the two heliostats is essentially a cross joint bearing, and if the heliostat adopts a mature universal cross joint on the market or designs the heliostat central support by virtue of the structure, the heliostat has a difficult problem in structure that the off-axis distance between two rotating shafts is too large, and the distance between the dual axes, especially the driving shaft (horizontal fixed shaft) and the center of gravity of the heliostat is too large. Excessive off-axis can cause nonlinearity in the sun-tracking control algorithm; the excessive eccentricity increases the load of the transmission mechanism, improves the specification and the cost of the transmission mechanism, increases the abrasion of the moving joint piece, reduces the service life, reduces the transmission precision and the unnecessary energy consumption, simultaneously also brings the bending resistance problem caused by eccentric compression to the upright post below, and increases the unnecessary rigidity requirement and the material cost. The foregoing is also a key reason for the current practice of such heliostats being less.
Therefore, how to reduce the off-axis and eccentricity of heliostat drives is critical to such heliostat designs.
Disclosure of Invention
The invention aims at: aiming at the problem that the prior art cannot meet the existing needs, the double-shaft integrated sunlight tracking driving device for eliminating the off-axis error is provided, the double shafts of the heliostat are skillfully designed to be intersected in a coplanar mode, so that the centrifugal distance of the two shafts of the heliostat is zero, the rotating shaft is directly and fixedly connected with the heliostat support, the distance between the center of gravity of the heliostat and the intersection point of the two transmission shafts is greatly reduced, the eccentric distance between the center of gravity of the heliostat and the rotating shaft is effectively reduced, and the structural difficulty of the heliostat is solved.
The technical scheme adopted by the invention is as follows: the utility model provides an eliminate biax integral type sunlight tracking drive arrangement of off-axis error, includes transmission box and U-shaped stand support, and the both ends of transmission box pass through the flange to be fixed on the U-shaped stand support, and wherein the one end of transmission box links to each other with the flange and is equipped with fixed component, and the both sides of transmission box are equipped with the pivot, are equipped with the transmission component in the pivot, and the both ends of pivot all are equipped with heliostat support, wherein are equipped with actuating mechanism one and actuating mechanism two on the transmission box bottom plate in the transmission box, actuating mechanism one around the operation of fixed component, actuating mechanism two drive the operation of transmission component.
In the present invention: the connecting line between the flanges at the two ends of the transmission box body, namely the virtual axis, is coplanar and orthogonal to the rotating shaft.
In the present invention: the first driving mechanism and the second driving mechanism are both composed of a speed reducer, a driving wheel support and a driving wheel, and the driving wheel is arranged on the driving wheel support and driven by the speed reducer.
In the present invention: the fixed component is a fixed wheel, and the driving mechanism runs around the fixed wheel to realize the movement of the transmission box body around the virtual axis which is the connecting line between the flanges at the two ends of the transmission box body, and realize the pitching of the heliostat support.
In the present invention: the driving mechanism drives the gear transmission mechanism or the connecting rod transmission mechanism or the chain transmission mechanism or the belt transmission mechanism to realize the inclination of the heliostat support along with the rotation of the rotating shaft.
The invention has the beneficial effects that:
1. the invention has simple structure and reasonable design, and designs the double axes of the heliostat, namely the virtual axes and the rotating shafts, to be coplanar and intersected, so that the centrifugal distance between the two axes of the heliostat is zero, and the rotating shafts are directly and fixedly connected with the heliostat support, thereby greatly reducing the distance between the center of gravity of the heliostat and the intersection point of the two transmission shafts, and effectively reducing the eccentric distance between the center of gravity of the heliostat and the rotating shafts;
2. the transmission box body is hung on the U-shaped upright post support through the virtual axis, and the heliostat support is hung on the transmission box body through the rotating shaft, namely the real axis, so that the coplanar intersection of the virtual axis and the real axis is realized;
3. the speed reducer fixed in the transmission box body drives the transmission box body to rotate around the fixed wheel on the virtual shaft so as to realize the pitching of the heliostat; the heliostat support is driven to rotate along with the rotating shaft, namely the real shaft by a second speed reducer fixed in the transmission box body to realize the inclination of the heliostat;
4. the rotating shaft, namely the real shaft, directly penetrates through the driving device, is connected with the heliostat supports on the two sides, is matched with the common torque tube type heliostat support structure, and the center of gravity of the heliostat is close to the intersection point of the real shaft and the imaginary shaft, so that the load of the driving device is reduced, and the operation power consumption of the heliostat is reduced.
Drawings
FIG. 1 is a schematic diagram of the structure of the present invention;
FIG. 2 is a schematic view of another construction of the present invention;
FIG. 3 is a schematic view of a U-shaped column mount of the present invention;
fig. 4 is a schematic diagram of the usage state reference of the present invention.
In the figure: 1. a transmission case; 2. a rotating shaft; 3. a heliostat support; 4. a gear transmission mechanism; 5. a first driving wheel; 6. a driving wheel II; 7. a first speed reducer; 8. a second speed reducer; 9. a fixed wheel; u-shaped upright supports; 11. virtual axis; 12. a flange; 13. a transmission case bottom plate; 14. a driving wheel support I; 15. a driving wheel support II; 16. and (5) a column.
Detailed Description
The invention is described in further detail below with reference to the drawings and the specific embodiments.
As shown in fig. 1-4, a dual-shaft integrated sun tracking driving device for eliminating off-axis errors comprises a driving box body 1 and a U-shaped stand column support 10, wherein the U-shaped stand column support 10 is fixed on a stand column 16, two ends of the driving box body 1 are fixed on the U-shaped stand column support 10 through flanges 12, one end of the driving box body 1 is connected with the flanges 12 and provided with a fixing member, the fixing member is a fixed wheel 9 in the embodiment, two corresponding side surfaces of the driving box body 1 are provided with rotating shafts 2 which are communicated, the rotating shafts 2 can roll through bearings on the two side surfaces, the rotating shafts 2 can be understood as real shafts,
the rotating shaft 2 is provided with a transmission member, the transmission member in the embodiment is a gear transmission mechanism 4, both ends of the rotating shaft 2 are provided with heliostat brackets 3, wherein a transmission box bottom plate 13 in a transmission box body 1 is provided with a first driving mechanism and a second driving mechanism, the first driving mechanism comprises a first speed reducer 7, a first driving wheel support 14 and a first driving wheel 5, and the first driving wheel 5 is arranged on the first driving wheel support 14 and driven by the first speed reducer 7; the second driving mechanism comprises a second speed reducer 8, a second driving wheel support 15 and a second driving wheel 6, wherein the second driving wheel 6 is arranged on the second driving wheel support 15 and is driven by the second speed reducer 8. The first driving wheel 5 runs around the fixed wheel 9, so that the transmission case body 1 moves around a virtual shaft 11 which is a connecting line between flanges 12 at two ends of the transmission case body 1, and pitching of the heliostat support is realized. Wherein the connecting line between the flanges 12 at the two ends of the transmission case body 1, namely the virtual axis 11, is coplanar and orthogonal with the rotating shaft, namely the real axis. The gear transmission mechanism 4 is driven by the driving wheel II 6, so that the heliostat support 3 can incline along with the rotation of the rotating shaft, namely the real shaft.
In the embodiment, the fixing member may be not only the fixing wheel 9, as long as the firmware member capable of achieving the technical effects described in the present invention falls within the scope of protection of the present invention.
In the present embodiment, the transmission member may be the gear transmission mechanism 4, or may be a link transmission mechanism or a chain transmission mechanism or a belt transmission mechanism, as long as the transmission member capable of achieving the technical effects described in the present invention falls within the scope of protection of the present invention.
The embodiments of the present invention have been described above, but the present invention is not limited to the above description. Any equivalent modifications and substitutions for this technical solution will be within the scope of the present invention for those skilled in the art. Accordingly, equivalent changes and modifications are intended to be included within the scope of the present invention without departing from the spirit and scope thereof.
Claims (1)
1. A eliminate biax integral type sunlight tracking drive arrangement of off-axis error which characterized in that: the solar energy power transmission device comprises a transmission box body and a U-shaped stand column support, wherein two ends of the transmission box body are fixed on the U-shaped stand column support through flanges, one end of the transmission box body is connected with the flanges and provided with fixing members, two sides of the transmission box body are provided with rotating shafts, the rotating shafts are provided with transmission members, two ends of each rotating shaft are provided with heliostat supports, a first driving mechanism and a second driving mechanism are arranged on a transmission box bottom plate in the transmission box body, the first driving mechanism runs around the fixing members, and the second driving mechanism drives the transmission members to run;
the connecting line between the flanges at the two ends of the transmission box body is an imaginary axis which is coplanar and orthogonal with the rotating shaft;
the first driving mechanism and the second driving mechanism are both composed of a speed reducer, a driving wheel support and a driving wheel, and the driving wheel is arranged on the driving wheel support and driven by the speed reducer;
the fixed component is a fixed wheel, and the driving mechanism runs around the fixed wheel to realize the linear motion of the transmission box body around the flanges at the two ends of the transmission box body and realize the pitching of the heliostat bracket;
the driving component is a gear driving mechanism or a connecting rod driving mechanism, and the driving mechanism drives the gear driving mechanism or the connecting rod driving mechanism to realize that the heliostat support inclines along with the rotation of the rotating shaft.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611253205.6A CN106774440B (en) | 2016-12-30 | 2016-12-30 | Double-shaft integrated sunlight tracking driving device capable of eliminating off-axis error |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611253205.6A CN106774440B (en) | 2016-12-30 | 2016-12-30 | Double-shaft integrated sunlight tracking driving device capable of eliminating off-axis error |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106774440A CN106774440A (en) | 2017-05-31 |
| CN106774440B true CN106774440B (en) | 2023-11-10 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201611253205.6A Active CN106774440B (en) | 2016-12-30 | 2016-12-30 | Double-shaft integrated sunlight tracking driving device capable of eliminating off-axis error |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110647174B (en) * | 2018-06-27 | 2024-03-08 | 沈平 | Vertical and horizontal integrated double-shaft speed reduction transmission system based on friction transmission |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101806351A (en) * | 2010-04-19 | 2010-08-18 | 王锐 | Solar heliostat driving device |
| CN102183964A (en) * | 2011-04-22 | 2011-09-14 | 浙江中控太阳能技术有限公司 | Heliostat sun tracking device |
| CN102788434A (en) * | 2012-08-07 | 2012-11-21 | 中国科学院电工研究所 | Tracking driving mechanism of heliostat |
| CN103019264A (en) * | 2013-01-11 | 2013-04-03 | 常州市亚美电气制造有限公司 | Tracking system of small and medium size tower type reflecting and concentrating solar heliostat field |
| CN103165699A (en) * | 2013-02-25 | 2013-06-19 | 常州市亚美电气制造有限公司 | Tower-type solar energy heliostat bevel gear passive automatic sun-chasing support |
| CN206400354U (en) * | 2016-12-30 | 2017-08-11 | 江苏鑫晨光热技术有限公司 | A kind of twin shaft integral type daylight for eliminating off-axis error follows the trail of drive device |
-
2016
- 2016-12-30 CN CN201611253205.6A patent/CN106774440B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101806351A (en) * | 2010-04-19 | 2010-08-18 | 王锐 | Solar heliostat driving device |
| CN102183964A (en) * | 2011-04-22 | 2011-09-14 | 浙江中控太阳能技术有限公司 | Heliostat sun tracking device |
| CN102788434A (en) * | 2012-08-07 | 2012-11-21 | 中国科学院电工研究所 | Tracking driving mechanism of heliostat |
| CN103019264A (en) * | 2013-01-11 | 2013-04-03 | 常州市亚美电气制造有限公司 | Tracking system of small and medium size tower type reflecting and concentrating solar heliostat field |
| CN103165699A (en) * | 2013-02-25 | 2013-06-19 | 常州市亚美电气制造有限公司 | Tower-type solar energy heliostat bevel gear passive automatic sun-chasing support |
| CN206400354U (en) * | 2016-12-30 | 2017-08-11 | 江苏鑫晨光热技术有限公司 | A kind of twin shaft integral type daylight for eliminating off-axis error follows the trail of drive device |
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| CN106774440A (en) | 2017-05-31 |
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