WO2012022257A1 - 一种凸轮转盘以及安装有该凸轮转盘的太阳跟踪装置及该装置的控制方法 - Google Patents

一种凸轮转盘以及安装有该凸轮转盘的太阳跟踪装置及该装置的控制方法 Download PDF

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Publication number
WO2012022257A1
WO2012022257A1 PCT/CN2011/078501 CN2011078501W WO2012022257A1 WO 2012022257 A1 WO2012022257 A1 WO 2012022257A1 CN 2011078501 W CN2011078501 W CN 2011078501W WO 2012022257 A1 WO2012022257 A1 WO 2012022257A1
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WIPO (PCT)
Prior art keywords
cam
power output
control
friction
output shaft
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PCT/CN2011/078501
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English (en)
French (fr)
Inventor
黄忠
Original Assignee
成都钟顺科技发展有限公司
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Publication date
Application filed by 成都钟顺科技发展有限公司 filed Critical 成都钟顺科技发展有限公司
Priority to AU2011291177A priority Critical patent/AU2011291177B2/en
Priority to US13/582,801 priority patent/US9337371B2/en
Priority to EP11817784.9A priority patent/EP2607741A4/en
Publication of WO2012022257A1 publication Critical patent/WO2012022257A1/zh

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Classifications

    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01LSEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L31/00Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
    • H01L31/04Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof adapted as photovoltaic [PV] conversion devices
    • H01L31/052Cooling means directly associated or integrated with the PV cell, e.g. integrated Peltier elements for active cooling or heat sinks directly associated with the PV cells
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24SSOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
    • F24S30/00Arrangements for moving or orienting solar heat collector modules
    • F24S30/40Arrangements for moving or orienting solar heat collector modules for rotary movement
    • F24S30/45Arrangements for moving or orienting solar heat collector modules for rotary movement with two rotation axes
    • F24S30/452Vertical primary axis
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02SGENERATION OF ELECTRIC POWER BY CONVERSION OF INFRARED RADIATION, VISIBLE LIGHT OR ULTRAVIOLET LIGHT, e.g. USING PHOTOVOLTAIC [PV] MODULES
    • H02S20/00Supporting structures for PV modules
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02SGENERATION OF ELECTRIC POWER BY CONVERSION OF INFRARED RADIATION, VISIBLE LIGHT OR ULTRAVIOLET LIGHT, e.g. USING PHOTOVOLTAIC [PV] MODULES
    • H02S20/00Supporting structures for PV modules
    • H02S20/30Supporting structures being movable or adjustable, e.g. for angle adjustment
    • H02S20/32Supporting structures being movable or adjustable, e.g. for angle adjustment specially adapted for solar tracking
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16HGEARING
    • F16H1/00Toothed gearings for conveying rotary motion
    • F16H1/02Toothed gearings for conveying rotary motion without gears having orbital motion
    • F16H1/04Toothed gearings for conveying rotary motion without gears having orbital motion involving only two intermeshing members
    • F16H1/12Toothed gearings for conveying rotary motion without gears having orbital motion involving only two intermeshing members with non-parallel axes
    • F16H1/16Toothed gearings for conveying rotary motion without gears having orbital motion involving only two intermeshing members with non-parallel axes comprising worm and worm-wheel
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24SSOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
    • F24S30/00Arrangements for moving or orienting solar heat collector modules
    • F24S2030/10Special components
    • F24S2030/11Driving means
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24SSOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
    • F24S30/00Arrangements for moving or orienting solar heat collector modules
    • F24S2030/10Special components
    • F24S2030/13Transmissions
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00Energy generation through renewable energy sources
    • Y02E10/40Solar thermal energy, e.g. solar towers
    • Y02E10/47Mountings or tracking
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00Energy generation through renewable energy sources
    • Y02E10/50Photovoltaic [PV] energy

Definitions

  • the invention belongs to the technical field of focused solar photovoltaic power generation, and particularly relates to a cam turntable and a sun tracking device equipped with the same, and a control method thereof. Background technique
  • Fixed PV module power generation is the main form of focusing solar photovoltaic power generation. It fixes the PV module on the load-bearing support system to collect the illumination radiation during the rising to the sunset and convert the collected light into electrical energy.
  • the amount of electrical energy is proportional to the effective radiation area of the photovoltaic module, and the effective radiation area is the projected area of the received sunlight on the vertical plane of the sunlight. Due to the earth's rotation, the sun rises and falls every day.
  • the photovoltaic modules that receive sunlight in a day are only facing the sun for a short time. When the photovoltaic modules are diagonally facing the sun, the effective radiation area is proportional to the vertical surface of the photovoltaic modules and sunlight. The cosine of the angle is so low that the utilization of sunlight is quite low, and a lot of solar radiation energy is wasted.
  • the bearing turntable is generally used as an azimuth driving device on the market, that is, the bearing turntable is used to set the photovoltaic component on the supporting mechanism, and the control of the bearing turntable is used to drive the photovoltaic component to rotate, so as to realize the tracking of the solar component by the photovoltaic component.
  • a bearing turntable cannot withstand excessive wind power, that is, when the wind is relatively large, the external impact load of the bearing turntable (the external impact load is mostly a harmful load) is large, and the impact load is extremely easy.
  • the present invention provides a cam turntable which can not only withstand a large impact load but also automatically cancel the gap of the azimuth drive device, and a sun tracking device equipped with the cam turntable and a control method therefor.
  • a cam turntable comprising: a housing, a driving device disposed on the housing, a power output shaft driven by the driving device and having a cam, and being disposed on the power output shaft A control device that transfers the external impact load.
  • the driving device of the cam according to the present invention includes a driving motor disposed on the housing, a driving worm connected to the power output end of the driving motor, and fixedly disposed on the power output shaft and
  • the driving turbine that drives the worm meshing has a power transmission path of a motor-driven worm-driven turbine-power output shaft.
  • the cam turntable of the present invention comprising a control electric device disposed on the casing
  • a control worm connected to the power output end of the control motor, a control turbine fitted to the power take-off shaft through the sliding sleeve and engaged with the control worm, and a friction device in contact with the cam surface, wherein a control turbine is disposed between the cam and the driving turbine, and the control turbine and the driving turbine are spaced apart from each other and disposed in parallel on the power output shaft by a spacer sleeved on the power output shaft, to The drive turbine and the control turbine are spaced apart to prevent relative movement of the two to better control the transfer of external impact loads.
  • the friction device includes a friction body that is in contact with the cam surface and fixed to the housing, and a friction plate disposed between the cam and the friction body, the friction plate and The friction body and the cam are all attached to each other, so that the friction plate and the friction body, the friction plate and the cam are in surface contact, thereby better converting the external impact load into friction force and consuming it, thereby realizing harmful to these externalities.
  • the impact load is effectively transferred or eliminated.
  • the cam has a heart shape, and the friction plate is in contact with the concave curved surface of the heart cam, and the shape of the curved surface of the heart shaped cam can be specifically set according to actual needs.
  • one end of the power output shaft is located in the casing, and the other end protrudes from the casing; and in order to adjust a gap generated when components in the cam carousel are assembled,
  • An end cover is disposed at one end of the housing corresponding to the power output shaft not extending out of the housing, the end cover is fixed to the housing by bolts to adjust the gap; the other end is on the power output shaft
  • a shaft seal is disposed between the friction bodies, and the shaft seal seals the tapered roller bearing between the power output shaft and the friction body.
  • the cam turntable according to the present invention can pre-tighten and seal the components in the cam turntable during assembly, between the friction body and the casing, and between the end cover and the casing.
  • the friction body is fixed to the casing by screws, so as to facilitate installation and disassembly of the friction body, which is convenient for maintenance and replacement.
  • a sun tracking device includes a support mechanism for mounting a photovoltaic module and an azimuth driving device fixed to the support mechanism and azimuthally adjusting the support mechanism, the azimuth driving device being the cam turntable.
  • the supporting mechanism comprises a column, a lifting arm and a bracket system, wherein a lower end of the lifting arm is connected to the column through the cam turntable, and an upper end is connected to the bracket system, A photovoltaic module is mounted on the support system.
  • the power output shaft of the cam turntable protrudes from the housing and is connected to the lower end of the lift arm.
  • the power output shaft of the cam turntable protrudes from one end of the casing through the output flange and the lift arm The lower end is rigidly connected.
  • the sun tracking device of the present invention is further provided with a height angle driving device fixed between the lifting arm and the bracket system and adjusting the height of the bracket system, the height angle driving device and the above
  • the azimuth driving device ie, the cam turntable
  • the solar component supporting mechanism of the solar tracking device is combined with the solar component supporting mechanism of the solar tracking device to perform full-fit tracking of the solar motion trajectory, thereby maximizing the use of sunlight and improving the utilization of illumination.
  • a method for controlling a sun tracking device comprising: the following steps:
  • control motor drives the friction plate to rotate by the control worm and the control turbine
  • the control turbine only constrains the circular motion of the friction plate, and does not constrain the radial motion.
  • control turbine acts on the cam, and the cam presses the friction plate toward the friction body, thereby the components in the cam turntable
  • the gap due to wear of the components is eliminated during assembly or after a period of use.
  • the solar tracking device provided by the present invention uses a cam turntable as an azimuth driving device to perform azimuth adjustment on a supporting mechanism for mounting a photovoltaic module, and the cam rotating wheel passes the control device to the entire sun.
  • the harmful external impact load carried by the tracking device is converted into frictional force and transferred and reduced, thereby helping to protect the subsequent driving device from being damaged due to excessive impact load, in particular, the accuracy of the protection control turbine is not affected, and the length is further extended.
  • the service life of the entire sun tracking device has high safety performance and large carrying capacity.
  • the cam dial as the azimuth driving device, it also has an automatic canceling gap function, that is, since the starting time and speed of the control turbine are hysteresis with respect to the driving turbine, Controlling the turbine by acting on the cam, the cam pressing the friction lining in the direction of the friction body, so that the components in the cam turret are assembled or used for a period of time due to the components
  • the cam disc is equipped with a heart-shaped cam, and the concave curved surface of the heart-shaped cam is attached to the friction plate, and at the same time, the cam and the friction plate, the friction plate and the friction body are in surface contact manner, so that they can be
  • the frictional contact surface is the largest, so that the harmful external impact load can be converted into friction force to be effectively transferred or reduced, and the concave curved surface of the heart cam can be transferred according to the impact load required or consumed.
  • the cam track is used as the azimuth driving device of the sun tracking device to track the solar trajectory
  • an elevation angle driving for adjusting the height of the bracket system is also provided between the lifting arm and the bracket system.
  • the device, the height angle driving device and the azimuth driving device ie, the cam wheel
  • FIG. 1 is a structural diagram of a sun tracking device according to an embodiment of the present invention.
  • Figure 2 is a front elevational view of the cam dial of Figure 1.
  • Figure 3 is a cross-sectional view taken along line A-A of Figure 2;
  • Figure 4 is a perspective view showing the internal structure of the cam disc shown in Figure 2.
  • Fig. 5 is a structural schematic view showing a state in which the cam of the cam turntable is attached to the friction device in the embodiment.
  • the mark 1 is a photovoltaic module; the mark 2 is a cam turntable; the mark 2-1 is a casing; the mark 2-2 is a cam; the mark 2-3 is a power output shaft; the mark 2-4 is a drive motor; - 5 for drive
  • a solar tracking device includes a support mechanism for mounting the photovoltaic module 1 and an azimuth driving device fixed to the support mechanism and azimuthally adjusting the support mechanism, the orientation
  • the angular drive is a cam turntable 2.
  • the cam turntable 2 includes a housing 2-1, a driving device disposed on the housing 2-1, a power output shaft 2-3 driven by the driving device and having a cam 2-2, and a setting A control device for transferring the external impact load on the power output shaft 2-3.
  • the driving device includes a driving motor 2-4 disposed on the casing 2-1 (the driving motor 2-4 adopts a constant torque motor in the embodiment), and is connected to the power output end of the driving motor 2-4
  • the drive worm 2-5 and the drive turbine 2-6 fixedly disposed on the power take-off shaft 2-3 and meshed with the drive worm 2-5.
  • the control device comprises a control motor 2-7 disposed on the housing 2-1, a control worm 2-8 connected to the power output end of the control motor 2-7, and a mounting device 2-9 through the sliding sleeve 2-9.
  • a control turbine 2-10 on the power output shaft 2-3 and engaged with the control worm 2-8 and a replacement page in surface contact with the cam 2-2 (Article 26) a friction device, wherein the control turbine 2-10 is disposed between the cam 2-2 and the drive turbine 2-6, and a package is disposed between the control turbine 2-10 and the drive turbine 2-6
  • the spacers 2-11 on the power output shaft 2-3 are spaced apart and disposed in parallel on the power take-off shaft 2-3.
  • the friction device includes a friction body 2- 12 that is in surface contact with the cam 2-2 and is fixed to the housing 2-1, and friction between the cam 2-2 and the friction body 2-12.
  • a sheet 2-13, the friction plate 2-13 is attached to the friction body 2-12 and the cam 2-2; the friction body 2-12 is fixed to the housing 2-1 by a screw 10;
  • the cam 2-2 is in the shape of a heart, and the friction plate 2-13 is in contact with the concave curved surface 2-14 of the heart cam 2-2; between the power output shaft 2-3 and the friction body 2-12
  • a tapered roller bearing 11 is provided.
  • the supporting mechanism comprises a column 3, a lifting arm 4 and a bracket system 5, wherein the lower end of the lifting arm 4 is connected to the column 3 through the cam turntable 2, and the upper end is connected to the bracket system 5, the bracket system 5 Mounting the photovoltaic module 1; one end of the power output shaft 2-3 is located in the casing 2-1, and the other end protrudes from the casing 2-1 and is connected to the lower end of the lift arm 4;
  • the housing 2-1 is provided with an end cover 6 corresponding to one end of the power output shaft 2-3 that does not protrude from the housing 2-1, and the end cover 6 is fixed to the housing 2-1 by bolts 12.
  • a shaft seal ⁇ 7 is disposed between the power output shaft 2-3 and the friction body 2-12, and the shaft seal ring seals the tapered roller bearing 11 to the power output shaft 2-3 Between the friction body 2-12; one end of the power output shaft 2-3 extending from the casing 2-1 is rigidly connected to the lower end of the lift arm 4 through the output flange 8; A 0-type sealing jaw 13 is provided between the end cover 6 and the housing 2-1 between the 12 and the housing 2-1.
  • the sun tracking device is further provided with a height angle driving device 9 fixed between the lifting arm 4 and the bracket system 5 and for adjusting the height of the bracket system 5.
  • the control method of the sun tracking device and the working principle thereof firstly driving the driving motor 2-4, then starting the control motor 2-7, and setting the rotation speed of the control motor 2-7 to be lower than the driving Motor
  • the rotation speed of 2-4 is about 10%.
  • the control motor 2-7 drives the friction plate 2-13 to rotate by the control worm 2-8 and the control turbine rod 2-10 (the control turbine 2-10 only) Constraining the circular motion of the friction plates 2-13, not constraining the radial motion), and operating in the same direction as the driving motor 2 to further release the torque generated by the driving motor 2-4, stopping after a short delay
  • the starting time of the motor is left with a certain delay and speed difference, so when the external impact load is large, the impact load acts on the friction plate 2-13 through the cam 2-2, and is converted into the friction plate.
  • the sun tracker is further provided with a height fixed between the lifting arm 4 and the bracket system 5 and height-adjusting the bracket system 5
  • the angular driving device 9 (this embodiment adopts an electric push rod as the height angle driving device 9), in the process of azimuth driving adjustment of the bracket system 5 by the cam turntable 2, the height angle driving device 9 simultaneously
  • the bracket system 5 performs height angle adjustment so that the photovoltaic module 1 disposed on the bracket system 5 performs full-fit tracking of the trajectory of the sun motion.

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Description

说 明 书 一种凸轮转盘以及安装有该凸轮转盘的太阳跟踪装置及该装置的控制方法 技术领域
本发明属于聚焦太阳能光伏发电技术领域, 具体涉及一种凸轮转盘以及安 装有该凸轮转盘的太阳跟踪装置及其该装置的控制方法。 背景技术
随着经济的发展和社会的进步, 自然资源被大量地、 甚至是掠夺性地开发 和利用, 人类的自然资源即将枯竭, 大量自然能源在使用过程中所产生的污染 也使人类的生活环境面临严重的威胁, 加上人类对自然资源的利用提出了越来 越高的要求, 因此, 寻找新能源已迫在眉睫。 而太阳能作为一种干净环保并且 取之不尽的可再生新能源, 随着社会经济要实现可持续发展的呼吁, 越来越受 到人类的青睐, 其在人类生产生活中具有广泛的作用, 其中之一就是将太阳能 转换为电能, 而聚焦太阳能光伏发电的工作原理就是将汇聚的太阳光转换成电 能。
固定光伏组件发电是聚焦太阳能光伏发电的主要形式, 它是将光伏组件固 定于承载支架系统上, 用以收集日升至日落期间的光照辐射, 并将收集到的光 照转换为电能, 其转换的电能多少与光伏组件的有效辐射面积成正比, 而该有 效辐射面积即为被接收太阳光在太阳光垂直面上的投影面积。 由于地球自转, 太阳每天东升西落, 一天之中接收太阳光的光伏组件只有很短时间是正对太阳 的, 当光伏组件斜对太阳时, 其有效辐射面积正比于光伏组件与太阳光垂直面 之间夹角的余弦, 因此其对于太阳光的利用率是相当低的, 浪费了大量的太阳 辐照能量。
针对上述问题, 目前在聚焦太阳能光伏发电领域中, 采用方位角驱动装置 来对光伏组件的方位角进行控制调节的太阳跟踪装置应运而生, 以使光伏组件
'替换页 (细则第 26条) 对太阳运动轨迹进行追踪, 使光伏组件尽可能长时间正对太阳光的辐射方向, 以提高太阳光的利用率。 目前市场上普遍采用轴承转盘作为方位角驱动装置, 即采用该轴承转盘将光伏组件设置于支撑机构上, 并通过对轴承转盘的控制使 其带动光伏组件转动, 以实现该光伏组件对太阳的追踪。 但是, 这种轴承转盘 不能够承受过大的风力, 即当风力比较大时, 该轴承转盘所承受的外来冲击载 荷(该外来冲击载荷多为有害载荷)就较大, 这些沖击载荷极易造成轴承转盘 的损害, 从而导致整个太阳跟踪装置的使用寿命偏短, 防过载能力差; 并且, 这种轴承转盘在装配过程中或在使用一段时间后, 轴承转盘内各部件由于磨损 等原因之间会产生间隙, 而这些间隙只能通过人工来对其进行调整, 这对于太 阳追踪装置这种大型机械设.备而言, 其维修成本十分高昂, 不利于市场推广。 发明内容
针对上述不足, 本发明提供一种不但能够承受较大沖击载荷, 而且还能够 自动消除方位角驱动装置间隙的凸轮转盘以及安装有该凸轮转盘的太阳跟踪装 置及其该装置的控制方法。
本发明所要解决的技术问题是通过以下技术方案来实现的:
一种凸轮转盘, 其特征在于: 该凸轮转盘包括壳体、 设置在所述壳体上的 驱动装置、 由所述驱动装置驱动并带有凸轮的动力输出轴和设置在所述动力输 出轴上对外来冲击载荷进行转移的控制装置。
本发明所述的凸轮转盘, 其所述驱动装置包括设置在所述壳体上的驱动电 机、 连接在所述驱动电机动力输出端的驱动蜗杆和固定设置在所述动力输出轴 上并与所述驱动蜗杆啮合的驱动涡轮, 其动力传递路线为电机-驱动蜗杆-驱动 涡轮-动力输出轴。
本发明所述的凸轮转盘, 其所述控制装置包括设置在所述壳体上的控制电
2
替换页 (细则第 26条) 机、 连接在所述控制电机动力输出端的控制蜗杆、 通过滑动套配装在所述动力 输出轴上并与所述控制蜗杆啮合的控制涡轮和与所述凸轮面接触的摩擦装置, 其中, 所述控制涡轮设置于所述凸轮与驱动涡轮之间, 并且所述控制涡轮与驱 动涡轮之间采用套装在所述动力输出轴上的隔套隔开并平行设置在所述动力输 出轴上, 以对所述驱动涡轮和控制涡轮进行定距, 防止两者相对运动, 从而更 好地控制外来冲击载荷的转移。
本发明所述的凸轮转盘, 其所述摩擦装置包括与所述凸轮面接触并固定于 所述壳体上的摩擦体和设置在所述凸轮与摩擦体之间的摩擦片, 该摩擦片与所 述摩擦体和凸轮均贴合, 实现该摩擦片与摩擦体、 摩擦片与凸轮之间均为面接 触, 从而更好地将外来冲击载荷转化为摩擦力予以消耗掉, 实现对这些外来有 害的冲击载荷有效转移或消.减。
本发明所述的凸轮转盘, 其所述凸轮呈心形, 所述摩擦片与心形凸轮的凹 陷曲面相贴合, 该心形凸轮凹陷曲面的形状可根据实际需要具体设定。
本发明所述的凸轮转盘, 其所述动力输出轴与摩擦体之间设置有锥形滚子 轴承为佳, 当然也可^^据具体情况采用其他轴承。
本发明所述的凸轮转盘, 其所述动力输出轴的一端位于所述壳体内, 另一 端伸出所述壳体; 同时为了调整该凸轮转盘内各部件在装配时所产生的间隙, 所述壳体对应于未伸出该壳体的动力输出轴的一端设置有端盖, 该端盖通过螺 栓固定于所述壳体上, 以对上述间隙进行调整; 另一端在所述动力输出轴与摩 擦体之间设置轴密封圈, 该轴密封圈将所述锥形滚子轴承密封于所述动力输出 轴与摩擦体之间。
本发明所述的凸轮转盘, 其为了在装配时即可对凸轮转盘内各部件进行预 紧和密封, 在所述摩擦体与壳体之间、 所述端盖与壳体之间均设置有 0型密封
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替换页 (细则第 26条) 圈。
本发明所述的凸轮转盘, 其所述摩擦体通过螺钉固定于所述壳体上, 以方 便对该摩擦体安装和拆卸, 便于维修更换。
一种太阳跟踪装置, 包括用以安装光伏组件的支撑机构和固定于所述支撑 机构上并对该支撑机构进行方位角调整的方位角驱动装置, 所述方位角驱动装 置为所述凸轮转盘。
本发明所述的太阳跟踪装置, 其所述支撑机构包括立柱、 举臂和支架系统, 所述举臂的下端通过所述凸轮转盘与所述立柱连接, 上端与所述支架系统连接, 所述支架系统上安装光伏组件。
本发明所述的太阳跟踪装置, 其所述凸轮转盘的动力输出轴伸出所述壳体 一端与所述举臂的下端连接。
本发明所述的太阳跟踪装置, 其为了尽可能多地将外来有害载荷转换为摩 擦力, 所述凸轮转盘的动力输出轴伸出所述壳体的一端通过输出法兰与所述举 臂的下端刚性连接。
本发明所述的太阳跟踪装置, 该太阳跟踪装置还设置有固定于所述举臂与 支架系统之间并对所述支架系统进行高度角调节的高度角驱动装置, 该高度角 驱动装置与上述方位角驱动装置 (即凸轮转盘)相互结合对太阳跟踪装置的光 伏组件支撑机构进行太阳运动轨迹全拟合跟踪, 从而可最大限度地利用太阳光, 提高光照的利用率。
一种太阳跟踪装置的控制方法, 其特征在于: 包括以下步骤:
a )、 先启动所述驱动电机, 后启动所述控制电机, 并且将所述控制电机的 转速设置为低于所述驱动电机的转速 10%左右;
b ) 、 所述控制电机通过所述控制蜗杆和控制涡轮带动所述摩擦片转动, 且
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替换页 (细则第 26条) 与所述驱动电机同向运行, 以对所述驱动电机产生的扭矩进一步释放; c )、短暂延时后停止所述驱动电机, 由于所述凸轮与动力输出轴为整体件, 并且所述控制电机的启动时间稍晚于所述驱动电机的启动, 即两电机的启动时 间留有一定的延时和速差, 故当外来沖击载荷较大时, 该冲击栽荷通过所述凸 轮作用于所述摩擦片, 并转化为所述摩擦片与摩擦体之间的摩擦力, 从而将这 部分有害的外来沖击载荷进行有效转移和消减。
本发明所述的太阳跟踪装置的控制方法, 其在所述步骤 b )中, 所述控制涡 轮只约束摩擦片的圓周运动, 对径向运动不作约束。
本发明所述的太阳跟踪装置的控制方法, 其在上述步骤中, 所述控制涡轮 通过作用于所述凸轮, 该凸轮将所述摩擦片向摩擦体方向挤压, 从而将凸轮转 盘内各部件在装配时或在使用一段时间后由于各部件的磨损而产生的间隙消 除。
本发明具有如下有益效果:
( 1 )针对现有的太阳跟踪装置而言, 本发明提供的太阳跟踪装置采用凸轮 转盘作为方位角驱动装置来对安装光伏组件的支撑机构进行方位角调整, 该凸 轮转盘通过控制装置对整个太阳跟踪装置所承载的有害外来冲击载荷转化为摩 擦力而转移消减掉, 从而有利于保护后续驱动装置因为冲击载荷过大而被损坏, 特别是保护控制涡轮的精度不受影响, 并且进一步延长了整个太阳跟踪装置的 使用寿命, 其安全性能高, 承载能力大。
( 2 )在上述太阳跟踪装置中, 对于作为方位角驱动装置的凸轮转盘而言, 其还具备自动消除间隙功能, 即由于控制涡轮的启动时间和速度相对于驱动涡 轮而言具有滞后性, 因此控制涡轮通过作用于凸轮, 该凸轮将摩擦片向摩擦体 方向挤压, 从而对凸轮转盘内各部件在装配时或在使用一段时间后由于各部件
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替换页 (细则第 26条) 的磨损而产生的间隙进行调整消除, 节约了消除上述间隙的人工成本, 其结构 紧凑, 使用安全方便。
( 3 )本凸轮转盘釆用心形凸轮, 并且该心形凸轮的凹陷曲面与摩擦片贴合, 同时凸轮与摩擦片、 摩擦片与摩擦体之间均采用面接触的方式, 因此可将它们 之间的摩擦接触面最大, 因此可最大限度地将有害的外来冲击载荷转化为摩擦 力而有效转移或消减掉, 并且该心形凸轮的凹陷曲面可根据需要转移或消耗的 冲击载荷的多少来灵活设定, 其结构简单, 经济适用; 就该凸轮转盘本身而言, 其可广泛适用于起重运输机械、 采掘机械、 建筑工程机械、 港口机械和太阳跟 踪器等大型回转机械装置上, 适于市场推广。
( 4 )本发明在采用凸轮转盘作为太阳跟踪装置的方位角驱动装置来对太阳 运动轨迹进行跟踪之外, 还在举臂与支架系统之间设置了对支架系统进行高度 角调节的高度角驱动装置, 该高度角驱动装置与方位角驱动装置(即凸轮转盘) 综合作用, 使太阳跟踪装置的光伏组件支撑机构实现了对太阳运动轨迹的全拟 合跟踪, 从而最大限度地收集了日升至日落期间的光照辐射, 大大提高了太阳 光的利用率。 附图说明
图 1为本发明实施例所述的太阳跟踪装置的结构图。
图 2为图 1中凸轮转盘的主视图。
图 3为图 2的 A- A向剖视图。
图 4为图 2所示凸轮转盘内部结构的立体图。
图 5为实施例中所述凸轮转盘中凸轮与摩擦装置贴合时的结构示意图。
上述图中, 标记 1为光伏组件; 标记 2为凸轮转盘; 标记 2-1为壳体; 标 记 2-2为凸轮; 标记 2-3为动力输出轴; 标记 2-4为驱动电机; 标记 2- 5为驱
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替换页 (细则第 26条) 动蜗杆; 标记 2-6为驱动涡轮; 标记 2-7为控制电机; 标记 2-8为控制蜗杆; 标记 2-9为滑动套; 标记 2-10为控制涡轮; 标记 2-11为隔套; 标记 2-12为摩 擦体; 标记 2- 13为摩擦片; 标记 2-14为凸轮 2-2的凹陷曲面; 标记 3为立柱; 标记 4为举臂; 标记 5为支架系统; 标记 6为端盖; 标记 7为轴密封圏; 标记 8 为输出法兰; 标记 9为高度角驱动装置; 标记 10为螺钉; 标记 11为锥形滚子 轴承; 标记 12为螺栓; 标记 13为 0型密封圈。 具体实施方式 为了使本发明的目的、 技术方案及优点更加清楚明白, 以下结合附图及实 施例, 对本发明进行进一步详细说明。 应当理解, 此处所描述的具体实施例仅 仅用以解释本发明, 并不用于限定本发明。
如图 1 ~ 5所示, 一种太阳跟踪装置, 包括用以安装光伏组件 1的支撑机构 和固定于所述支撑机构上并对该支撑机构进行方位角调整的方位角驱动装置, 所述方位角驱动装置为凸轮转盘 2。
所述凸轮转盘 2包括壳体 2-1、设置在所述壳体 2-1上的驱动装置、 由所述 驱动装置驱动并带有凸轮 2-2的动力输出轴 2-3和设置在所述动力输出轴 2-3 上对外来冲击载荷进行转移的控制装置。
所述驱动装置包括设置在所述壳体 2-1上的驱动电机 2- 4 (本实施例中该驱 动电机 2-4采用恒扭矩电机)、 连接在所述驱动电机 2-4动力输出端的驱动蜗杆 2-5和固定设置在所述动力输出轴 2-3上并与所述驱动蜗杆 2-5啮合的驱动涡轮 2-6。
所述控制装置包括设置在所述壳体 2-1上的控制电机 2-7、连接在所述控制 电机 2-7动力输出端的控制蜗杆 2-8、 通过滑动套 2-9配装在所述动力输出轴 2-3上并与所述控制蜗杆 2-8啮合的控制涡轮 2-10和与所述凸轮 2-2面接触的 替换页 (细则第 26条) 摩擦装置,其中,所述控制涡轮 2-10设置于所述凸轮 2-2与驱动涡轮 2-6之间, 并且所述控制涡轮 2-10与驱动涡轮 2-6之间采用套装在所述动力输出轴 2-3上 的隔套 2-11隔开并平行设置在所述动力输出轴 2-3上。
所述摩擦装置包括与所述凸轮 2-2面接触并固定于所述壳体 2-1上的摩擦 体 2- 12和设置在所述凸轮 2-2与摩擦体 2-12之间的摩擦片 2-13,该摩擦片 2-1 3 与所述摩擦体 2-12和凸轮 2-2均贴合; 所述摩擦体 2-12通过螺钉 10固定于所 述壳体 2-1上; 所述凸轮 2-2呈心形, 所述摩擦片 2- 13与心形凸轮 2- 2的凹陷 曲面 2-14相贴合; 所述动力输出轴 2-3与摩擦体 2-12之间设置有锥形滚子轴 承 11。
所述支撑机构包括立柱 3、 举臂 4和支架系统 5 , 所述举臂 4的下端通过所 述凸轮转盘 2与所述立柱 3连接, 上端与所述支架系统 5连接, 所述支架系统 5 上安装光伏组件 1 ; 所述动力输出轴 2-3的一端位于所述壳体 2-1内, 另一端伸 出所述壳体 2-1并与所述举臂 4的下端连接; 并且, 所述壳体 2-1对应于未伸 出该壳体 2-1的动力输出轴 2-3的一端设置有端盖 6 , 该端盖 6通过螺栓 12固 定于所述壳体 2-1上; 另一端在所述动力输出轴 2-3与摩擦体 2-12之间设置轴 密封圏 7, 该轴密封圈 Ί将所述锥形滚子轴承 11密封于所述动力输出轴 2-3与 摩擦体 2 - 12之间; 所述动力输出轴 2-3伸出所述壳体 2-1的一端通过输出法兰 8与所述举臂 4的下端刚性连接; 所述摩擦体 2-12与壳体 2-1之间、 所述端盖 6与壳体 2-1之间均设置有 0型密封圏 13。
该太阳跟踪装置还设置有固定于所述举臂 4与支架系统 5之间并对所述支 架系统 5进行高度角调节的.高度角驱动装置 9。
该太阳跟踪装置的控制方法及其工作原理, 先启动所述驱动电机 2-4, 后启 动所述控制电机 2-7,并且将所述控制电机 2-7的转速设置为低于所述驱动电机
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替换页 (细则第 26条) 2-4的转速 10%左右, 此时所述控制电机 2-7通过所述控制蜗杆 2-8和控制涡轮 杆 2-10带动所述摩擦片 2-13转动 (该控制涡轮 2-10只约束摩擦片 2-13的圆 周运动, 对径向运动不作约束) , 且与所述驱动电机 2- 同向运行, 以对所述 驱动电机 2-4产生的扭矩进一步释放, 短暂延时后停止所述驱动电机 2-4; 由于 所述凸轮 2-2与动力输出轴 3为整体件, 并且所述控制电机 2-7的启动时间稍 晚于所述驱动电机 2-4 的启动, 即两电机的启动时间留有一定的延时和速差, 故当外来冲击载荷较大时, 该冲击载荷通过所述凸轮 2-2 作用于所述摩擦片 2-13, 并转化为所述摩擦片 . 2-13与摩擦体 2- 12之间的摩擦力, 从而将这部分 有害的外来冲击载荷进行有效转移和消减, 有效保护所述控制涡轮 10的精度免 受影响; 关于需要转移和消减的沖击载荷的多少可以通过对所述凸轮 2-2 的凹 陷曲面 2-14 进行设计来加以控制; 在上述工作过程中, 所述控制涡轮杆 2-1 Q 通过作用于所述凸轮 2-2,该凸轮 2-2将所述摩擦片 2-13向摩擦体 2-12方向挤 压, 从而将凸轮转盘 2 内各部件在装配时或在使用一段时间后由于各部件的磨 损而产生的间隙消除。
在采用凸轮转盘 2作为太阳跟踪装置的方位角驱动装置的同时, 该太阳跟 踪器还设置有固定于所述举臂 4与支架系统 5之间并对所述支架系统 5进行高 度角调节的高度角驱动装置 9 (本实施例采用电动推杆作为该高度角驱动装置 9 ), 在凸轮转盘 2对所述支架系统 5进行方位角驱动调整的过程中, 所述高度 角驱动装置 9同时对所述支架系统 5进行高度角调整, 从而使设置在所述支架 系统 5上的光伏组件 1对太阳运动的轨迹进行全拟合跟踪。
以上所述仅为本发明的较佳实施例而已, 并不用以限制本发明, 凡在本发 明的精神和原则之内所作的任何修改、 等同替换和改进等, 均应包含在本发明 的保护范围之内。
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替换页 (细则第 26条)

Claims

权 利 要 求 书
1、 一种凸轮转盘, 其特征在于: 该凸轮转盘(2) 包括壳体(2-1)、 设置 在所述壳体(2-1)上的驱动装置、 由所述驱动装置驱动并带有凸轮(2-2) 的 动力输出轴(2 - 3)和设置在所述动力输出轴(2-3)上对外来冲击载荷进行转 移的控制装置。
2、 根据权利要求 1所述的凸轮转盘, 其特征在于: 所述驱动装置包括设置 在所述壳体( 2-1 )上的驱动电机( 2_4 )、 连接在所述驱动电机( 2-4 )动力输 出端的驱动蜗杆(2-5)和固定设置在所述动力输出轴 (2-3)上并与所述驱动 蜗杆 ( 2-5 )啮合的驱动涡轮 ( 2-6 )。
3、 根据权利要求 2所述的凸轮转盘, 其特征在于: 所述控制装置包括设置 在所述壳体(2-1)上的控制电机(2-7)、 连接在所述控制电机(2-7)动力输 出端的控制蜗杆(2-8)、 通过滑动套(2-9) 配装在所述动力输出轴(2- 3)上 并与所述控制蜗杆(2-8)啮合的控制涡轮(2-10)和与所述凸轮(2-2) 面接 触的摩擦装置, 其中, 所述控制涡轮(2- 10)设置于所述凸轮(2-2)与驱动涡 轮(2-6)之间, 并且所述控制涡轮(2-10)与驱动涡轮(2-6)之间采用套装 在所述动力输出轴(2-3)上的隔套(2-11) 隔开并平行设置在所述动力输出轴
(2-3)上。
4、 根据权利要求 3所述的凸轮转盘, 其特征在于: 所述摩擦装置包括与所 述凸轮( 2-2 ) 面接触并固定于所述壳体( 2-1 )上的摩擦体 ( 2-12 )和设置在 所述凸轮(2-2) 与摩擦体 (2-12)之间的摩擦片 (2-13), 该摩擦片 (2-13) 与所述摩擦体 (2-12)和凸轮(2-2)均贴合。
5、 根据权利要求 4 所述的凸轮转盘, 其特征在于: 所述凸轮(2-2) 呈心 形, 所述摩擦片 (2-13)与心形凸轮(2-2) 的凹陷曲面 (2-14)相贴合。
6、 根据权利要求 5所述的凸轮转盘, 其特征在于: 所述动力输出轴(2-3)
10
替换页 (细则第 26条) 与摩擦体 ( 2-12 )之间设置有锥形滚子轴承( 11 )。
7、 根据权利要求 6所述的凸轮转盘, 其特征在于: 所述动力输出轴(2-3) 的一端位于所述壳体(2-1 ) 内, 另一端伸出所述壳体(2-1 ); 并且, 所述壳体
( 2-1 )对应于未伸出该壳体( 2-1 )的动力输出轴( 2-3 )的一端设置有端盖( 6 ), 另一端在所述动力输出轴(2-3)与摩擦体 (2-12)之间设置轴密封圈 (7), 该 轴密封圈 (7)将所述锥形滚子轴承(11 ) 密封于所述动力输出轴 (2-3) 与摩 擦体 (2-12)之间。
8、 根据权利要求 7所述的凸轮转盘, 其特征在于: 所述摩擦体(2-12)与 壳体( 2-1 )之间、 所述端盖( 6 )与壳体( 2-1 )之间均设置有 0型密封圈( 13 )。
9、 根据权利要求 8所述的凸轮转盘, 其特征在于: 所述摩擦体(2-12)通 过螺钉( 10 ) 固定于所述壳体( 2-1 )上。
10、 一种太阳跟踪装置, 其特征在于: 包括用以安装光伏组件(1 ) 的支撑 机构和固定于所述支撑机构上并对该支撑机构进行方位角调整的方位角驱动装 置, 所述方位角驱动装置为所述凸轮转盘(2)。
11、 根据权利要求 10所述的太阳跟踪装置, 其特征在于: 所述支撑机构包 括立柱(3)、 举臂 (4)和支架系统(5), 所述举臂 (4) 的下端通过所述凸轮 转盘(2)与所述立柱(3)连接, 上端与所述支架系统(5)连接, 所述支架系 统( 5 )上安装光伏组件( 1 )。
12、根据权利要求 11所述的太阳跟踪装置,其特征在于:所述凸轮转盘( 2 ) 的动力输出轴(2-3)伸出所述壳体(2-1 ) —端与所述举臂(4) 的下端连接。
13、根据权利要求 12所述的太阳跟踪装置,其特征在于:所述凸轮转盘( 2 ) 的动力输出轴(2-3)伸出所述壳体(2-1) 的一端通过输出法兰(8)与所述举 臂(4) 的下端刚性连接。 '
11
替换页 (细则第 26条)
14、 根据权利要求 13所述的太阳跟踪装置, 其特征在于: 该太阳跟踪装置 还设置有固定于所述举臂(4)与支架系统(5)之间并对所述支架系统(5)进 行高度角调节的高度角驱动装置(9)。
15、 一种太阳跟踪装置的控制方法, 其特征在于: 包括以下步骤:
a)、 先启动所述驱动电机(2- 4) , 后启动所述控制电机(2- 7) , 并且将 所述控制电机(2-7) 的转速设置为低于所述驱动电机(2-4) 的转速 10%左右; b) 、 所述控制电机(2-7)通过所述控制蜗杆(2-8)和控制涡轮(2-10) 带动所述摩擦片 (2-13)转动, 且与所述驱动电机(2-4) 同向运行, 以对所述 驱动电机(2-4)产生的扭矩进一步释放;
c) 、 短暂延时后停止所述驱动电机(2-4) , 由于所述凸轮(2-2)与动力 输出轴(2-3) 为整体件, 并且所述控制电机(2-7) 的启动时间稍晚于所述驱 动电机(2- 4) 的启动, 即两电机的启动时间留有一定的延时和速差, 故当外来 冲击载荷较大时, 该冲击载荷通过所述凸轮(2- 2)作用于所述摩擦片 (2-13), 并转化为所述摩擦片 (2-13) 与摩擦体 (2-13)之间的摩擦力, 从而将这部分 有害的外来冲击载荷进行有效转移和消减。
16、 根据权利要求 15所述的太阳跟踪装置的控制方法, 其特征在于: 在所 述步骤 b) 中, 所述控制涡轮(2-10)只约束摩擦片 (2-13)的圆周运动, 对径 向运动不作约束。
17、 根据权利要求 16所述的太阳跟踪装置的控制方法, 其特征在于: 在上 述步骤中, 所述控制涡轮(2-10)通过作用于所述凸轮(2-2) , 该凸轮(2-2) 将所述摩擦片 (2-13) 向摩擦体 (2-12) 方向挤压, 从而将凸轮转盘内各部件 在装配时或在使用一段时间后由于各部件的磨损而产生的间隙消除。
12
替换页 (细则第 26条)
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