CN108832306B - A flexible sealing structure for the center hole of FAST reflective surface - Google Patents
A flexible sealing structure for the center hole of FAST reflective surface Download PDFInfo
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- CN108832306B CN108832306B CN201810605938.4A CN201810605938A CN108832306B CN 108832306 B CN108832306 B CN 108832306B CN 201810605938 A CN201810605938 A CN 201810605938A CN 108832306 B CN108832306 B CN 108832306B
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- 238000007789 sealing Methods 0.000 title description 23
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 115
- 239000010959 steel Substances 0.000 claims abstract description 115
- 238000003032 molecular docking Methods 0.000 claims description 35
- 230000000903 blocking effect Effects 0.000 claims description 21
- 239000004677 Nylon Substances 0.000 claims description 7
- 229920001778 nylon Polymers 0.000 claims description 7
- 239000000853 adhesive Substances 0.000 claims 2
- 230000001070 adhesive effect Effects 0.000 claims 2
- 238000012423 maintenance Methods 0.000 abstract description 4
- 238000010586 diagram Methods 0.000 description 10
- 230000007246 mechanism Effects 0.000 description 7
- 230000008859 change Effects 0.000 description 4
- 238000000034 method Methods 0.000 description 3
- 229910000838 Al alloy Inorganic materials 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
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- 230000005855 radiation Effects 0.000 description 1
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q15/00—Devices for reflection, refraction, diffraction or polarisation of waves radiated from an antenna, e.g. quasi-optical devices
- H01Q15/14—Reflecting surfaces; Equivalent structures
- H01Q15/16—Reflecting surfaces; Equivalent structures curved in two dimensions, e.g. paraboloidal
- H01Q15/161—Collapsible reflectors
- H01Q15/162—Collapsible reflectors composed of a plurality of rigid panels
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Abstract
Description
技术领域Technical field
本发明涉及一种FAST反射面中心孔柔性封堵结构,该结构安装、拆卸完全采用人工操作,可满足FAST观测工况、维护工况的需求。The invention relates to a flexible sealing structure for the center hole of a FAST reflective surface. The installation and disassembly of the structure are completely manual operations, which can meet the needs of FAST observation working conditions and maintenance working conditions.
背景技术Background technique
500米口径球面射电望远镜(Five-hundred-meter Aperture Spherical radioTelescope,FAST)是全球最大的单口径射电天文望远镜,具有三项自主创新:利用贵州天然的喀斯特洼坑作为台址;主动变形反射面;采用六索并联拖动的柔性轻型机构拖动馈源舱实现一次索驱动,同时馈源支撑。The Five-hundred-meter Aperture Spherical Radio Telescope (FAST) is the world's largest single-aperture radio astronomical telescope. It has three independent innovations: using Guizhou's natural karst depressions as the site; actively deforming reflectors; A flexible lightweight mechanism with six parallel cables is used to drag the feed cabin to achieve primary cable drive and simultaneous feed support.
FAST反射面是用钢缆编成柔性三角形网格的索网,在上面安装 4450块边长约11m的三角形铝合金反射面单元,在2225个索网节点上用下拉索和安装在地面的液压促动器连接。在观测工况,由于地球自转运动,射电波的入射角度会随着天体东升西落而同步发生变化。为了满足这一变化要求,FAST通过促动器驱动下拉索和索网节点的径向运动,使300米口径反射面主动变形,由球面形成瞬时抛物面,保证抛物面始终指向需要观测的天体,并将来自天体的射电波信号进行聚焦。同时,处于焦点位置的馈源接收机接收电波信号并进行处理,这个过程是连续的。The FAST reflective surface is a cable net woven into a flexible triangular grid with steel cables. 4,450 triangular aluminum alloy reflector units with a side length of about 11 meters are installed on it. Down cables and hydraulic pressure units installed on the ground are used on 2,225 cable net nodes. Actuator connection. During observation conditions, due to the earth's rotation, the incident angle of radio waves will change synchronously as celestial bodies rise in the east and set in the west. In order to meet this changing requirement, FAST uses actuators to drive the radial movement of the cable and cable network nodes to actively deform the 300-meter-diameter reflecting surface and form an instant parabola from the spherical surface, ensuring that the parabola always points to the celestial body that needs to be observed, and will Radio wave signals from celestial bodies are focused. At the same time, the feed receiver at the focus position receives the radio wave signal and processes it. This process is continuous.
反射面外边缘直径600米的圆周上均布着6座百余米高的馈源支撑塔,每座塔支撑有一条直径46mm的钢丝绳,每条钢丝绳由各塔底的驱动卷扬机驱动,经地面导向滑轮、塔中心索通道、塔顶导向滑轮机构与馈源舱可靠连接,6条钢丝绳进行并联运动,拖动馈源舱进行天文跟踪观测轨迹的初步定位。Six feed support towers more than 100 meters high are evenly distributed on the 600-meter-diameter circumference of the outer edge of the reflective surface. Each tower supports a 46mm diameter steel wire rope. Each steel wire rope is driven by a driving winch at the bottom of each tower and passes through the ground. The guide pulley, tower center cable channel, and tower top guide pulley mechanism are reliably connected to the feed cabin. Six wire ropes move in parallel, dragging the feed cabin for preliminary positioning of astronomical tracking and observation trajectories.
馈源舱是承载馈源接收机,并对其位姿进行进一步精调控制的主体设备,主要包括星形框架、AB轴机构、Stewart平台、多波束接收机转向装置、舱罩和其他附属设备/设施等。馈源舱总体尺度为直径 13米、高6米,重约30吨。The feed cabin is the main equipment that carries the feed receiver and further fine-tunes its posture. It mainly includes a star frame, AB axis mechanism, Stewart platform, multi-beam receiver steering device, cabin cover and other ancillary equipment. /Facilities etc. The overall size of the feed cabin is 13 meters in diameter, 6 meters high, and weighs about 30 tons.
在FAST反射面底部中心处建造了一套光电一体化的舱停靠平台设备,用于馈源舱的检修维护等。舱停靠平台在FAST观测状态处于收藏状态,其高度小于等于3.5米,其水平投影在直径为16米的圆内。当舱入港检修维护时,舱停靠平台承接馈源舱的升降立柱升高至 5.02米,避免6索及缆线入舱机构与反射面单元干涉。A set of photoelectrically integrated cabin docking platform equipment was built at the center of the bottom of the FAST reflective surface for maintenance and repair of the feed cabin. The cabin docking platform is in the stowed state in the FAST observation state, its height is less than or equal to 3.5 meters, and its horizontal projection is within a circle with a diameter of 16 meters. When the cabin enters the port for inspection and maintenance, the lifting column of the cabin docking platform that receives the feed cabin is raised to 5.02 meters to avoid interference between the 6-wire and cable entry mechanism and the reflective surface unit.
为了方便馈源舱的建造、入港停靠,反射面底部中心处留有内切圆直径为16.8米的正五边形孔,孔下面建有一直径26米的基础圆台。当FAST观测时,馈源舱离港,需要将该正五边形孔进行封堵,以便有效屏蔽地面热辐射产生的噪声。馈源舱入港停靠时,需将覆盖正五边形孔用的封堵结构、机构等移除。In order to facilitate the construction of the feed cabin and docking in the port, a regular pentagonal hole with an inscribed circle diameter of 16.8 meters is left at the center of the bottom of the reflecting surface, and a basic circular cone with a diameter of 26 meters is built below the hole. When the feed cabin leaves the port during FAST observation, the regular pentagonal hole needs to be blocked to effectively shield the noise generated by ground thermal radiation. When the feed cabin docks in port, the blocking structures and mechanisms covering the regular pentagonal holes need to be removed.
当FAST反射面主动变形时,索网中心正五边形在水平投影面内会沿钢索轴向和垂直钢索轴向两个方向上分别产生侧偏量,最大侧偏量为140mm,同时5套节点盘的高度会产生变化,变化量±500mm。中心处正五边形孔的封堵结构和机构,应满足反射面变形要求。When the FAST reflective surface is actively deformed, the regular pentagon in the center of the cable net will generate side deflections in the two directions of the cable axial direction and the vertical steel cable axis in the horizontal projection plane. The maximum side deflection is 140mm. At the same time, The height of the 5 sets of node disks will change by ±500mm. The blocking structure and mechanism of the regular pentagonal hole in the center should meet the reflective surface deformation requirements.
本发明涉及一种FAST反射面中心孔柔性封堵结构,该封堵结构要满足中心正五边形孔封堵、拆除功能,能够适应反射面各工况的变形要求,实现结构装拆时操作简单可靠,且不能与其相邻反射面板、索网、舱停靠平台、馈源舱、拖动馈源舱的6索及缆线入舱机构干涉。The invention relates to a flexible blocking structure for the center hole of a FAST reflective surface. The blocking structure must meet the functions of blocking and dismantling the central regular pentagonal hole, be able to adapt to the deformation requirements of various working conditions of the reflective surface, and realize operations during assembly and disassembly of the structure. It is simple and reliable, and cannot interfere with the adjacent reflective panel, cable net, cabin docking platform, feed cabin, 6 cables that drag the feed cabin and the cable entry mechanism.
公开于该背景技术部分的信息仅仅旨在加深对本发明的总体背景技术的理解,而不应当被视为承认或以任何形式暗示该信息构成已为本领域技术人员所公知的现有技术。The information disclosed in this Background section is merely intended to enhance an understanding of the general background of the invention and should not be construed as an admission or in any way implying that the information constitutes prior art that is already known to those skilled in the art.
发明内容Contents of the invention
本发明的目的在于提供一种FAST反射面中心孔柔性封堵结构,以解决现有技术中存在的技术问题。The purpose of the present invention is to provide a flexible blocking structure for the center hole of a FAST reflective surface to solve the technical problems existing in the prior art.
为了实现上述目的,本发明采用以下技术方案:In order to achieve the above objects, the present invention adopts the following technical solutions:
本发明采用一种FAST反射面中心孔柔性封堵结构,包括:5块反射面板立面封堵单元、4块类梯形钢网单元、1块走梯处类梯形钢网单元、1块走梯处钢网单元柔性盖以及1块中心圆形钢网单元;其中,The invention adopts a FAST reflective surface center hole flexible sealing structure, which includes: 5 reflective panel facade sealing units, 4 trapezoidal steel mesh units, 1 trapezoidal steel mesh unit at the staircase, and 1 staircase. A flexible cover of the steel mesh unit and a central circular steel mesh unit; among which,
5块所述反射面板立面封堵单元与FAST反射面中心五边形孔的五条边一一对应,反射面板立面封堵单元的上端与FAST反射面中心五边形孔边缘的反射面板固定连接,反射面板立面封堵单元的下端为自由端,其延伸至FAST反射面中心孔边缘主索后方,并与主索搭接;The five reflective panel facade sealing units are in one-to-one correspondence with the five sides of the pentagonal hole in the center of the FAST reflective surface. The upper end of the reflective panel facade sealing unit is fixed to the reflective panel at the edge of the pentagonal hole in the center of the FAST reflective surface. Connection, the lower end of the reflective panel facade sealing unit is the free end, which extends to the back of the main cable at the edge of the center hole of the FAST reflective surface, and overlaps with the main cable;
4块所述类梯形钢网单元以及所述走梯处类梯形钢网单元的长直顶边与FAST反射面中心正五边形孔边缘的主索连接,圆弧底边与 FAST舱停靠平台设备的环梁平台处的外圈护栏、走梯平台护栏连接;The four trapezoid-like steel mesh units and the long straight top edges of the trapezoid-like steel mesh units at the stairs are connected to the main cables at the edge of the regular pentagonal hole in the center of the FAST reflective surface, and the arc bottom edge is connected to the FAST cabin docking platform. The outer ring guardrail at the ring beam platform of the equipment and the guardrail on the ladder platform are connected;
所述走梯处类梯形钢网单元在FAST舱停靠平台设备的环梁平台的走梯平台处设置有一供工作人员上下走梯平台的开口,所述走梯处钢网单元柔性盖覆盖在所述开口处;走梯处钢网单元柔性盖与走梯处类梯形钢网单元的相邻边粘接连接,走梯处钢网单元柔性盖与走梯平台护栏的连接处通过挂钩可拆卸连接;The ladder-shaped steel mesh unit at the stairway is provided with an opening for workers to get up and down the stairway platform at the stairway platform of the ring beam platform of the FAST cabin docking platform equipment. The steel mesh unit at the stairway is covered with a flexible cover. At the above-mentioned opening; the flexible cover of the steel mesh unit at the staircase is bonded to the adjacent sides of the trapezoidal steel mesh unit at the staircase, and the connection between the flexible cover of the steel mesh unit at the staircase and the guardrail of the staircase platform is detachably connected through a hook ;
所述中心圆形钢网单元覆盖在FAST舱停靠平台环梁平台的中心孔处,并与FAST舱停靠平台的内护栏立管通过挂钩可拆卸连接。The central circular steel mesh unit covers the central hole of the ring beam platform of the FAST cabin docking platform, and is detachably connected to the inner guardrail riser of the FAST cabin docking platform through hooks.
作为一种进一步的技术方案,反射面板与所述反射面板立面封堵单元的连接处冲有5mm的小孔,反射面板与反射面板立面封堵单元的上端通过开口销、平垫圈实现固定连接。As a further technical solution, a 5mm hole is punched at the connection between the reflective panel and the reflective panel facade sealing unit, and the upper ends of the reflective panel and the reflective panel facade sealing unit are fixed through cotter pins and flat washers. connect.
作为一种进一步的技术方案,所述类梯形钢网单元以及所述走梯处类梯形钢网单元的长直顶边上均匀固定设置有若干个尼龙带,类梯形钢网单元以及所述走梯处类梯形钢网单元的长直顶边通过所述尼龙带与FAST反射面中心正五边形孔边缘的主索连接。As a further technical solution, several nylon belts are evenly fixed on the long straight top edges of the trapezoid-like steel mesh units and the ladder-like steel mesh units at the stairs. The long straight top edge of the trapezoidal steel mesh unit at the ladder is connected to the main cable at the edge of the regular pentagonal hole in the center of the FAST reflective surface through the nylon strap.
作为一种进一步的技术方案,所述类梯形钢网单元以及所述走梯处类梯形钢网单元的圆弧底边通过双钩与FAST舱停靠平台设备的环梁平台处的外圈护栏、走梯平台护栏连接。As a further technical solution, the arc bottom edge of the trapezoid-like steel mesh unit and the trapezoid-like steel mesh unit at the ladder is connected through double hooks with the outer ring guardrail at the ring beam platform of the FAST cabin docking platform equipment and the walkway. Ladder platform guardrail connection.
作为一种进一步的技术方案,所述走梯处钢网单元柔性盖与所述走梯处类梯形钢网单元的连接处设置有魔术贴,二者通过所述魔术贴粘接连接。As a further technical solution, a Velcro is provided at the connection between the flexible cover of the steel mesh unit at the stairway and the trapezoidal steel mesh unit at the stairway, and the two are adhesively connected through the Velcro.
作为一种进一步的技术方案,所述中心圆形钢网单元通过单钩与FAST舱停靠平台的内护栏立管可拆卸连接;中心圆形钢网单元的周向边缘内缝制一根直径5mm的钢丝绳;所述单钩勾在所述钢丝绳上之后,挂在FAST舱停靠平台的内护栏立管上。As a further technical solution, the central circular steel mesh unit is detachably connected to the inner guardrail riser of the FAST cabin docking platform through a single hook; a 5mm diameter pipe is sewn into the circumferential edge of the central circular steel mesh unit. The steel wire rope; after the single hook is hooked on the steel wire rope, it is hung on the inner guardrail riser of the FAST cabin docking platform.
作为一种进一步的技术方案,所述类梯形钢网单元以及所述走梯处类梯形钢网单元在高度方向设置有预留量,即:其高度大于其所要封堵位置处在复位状态下的实际高度。As a further technical solution, the trapezoidal steel mesh unit and the trapezoidal steel mesh unit at the stairway are provided with a reserve amount in the height direction, that is, its height is greater than its desired blocking position in the reset state. actual height.
作为一种进一步的技术方案,所述预留量为0.5米。As a further technical solution, the reserved amount is 0.5 meters.
作为一种进一步的技术方案,所述中心圆形钢网单元在直径方向留有一定的预留量,即:其直径大于FAST舱停靠平台环梁平台的中心孔直径。As a further technical solution, the central circular steel mesh unit leaves a certain reserve in the diameter direction, that is, its diameter is larger than the diameter of the central hole of the ring beam platform of the FAST cabin docking platform.
作为一种进一步的技术方案,所述预留量不小于0.6米。As a further technical solution, the reserved amount is not less than 0.6 meters.
采用上述技术方案,本发明具有如下有益效果:Adopting the above technical solution, the present invention has the following beneficial effects:
该封堵结构不用降下舱停靠平台的内、外圈护栏,不用降下3 套升降立柱,舱停靠平台外圈的梯形封堵结构不用拆除,馈源舱入港时,只需拆卸中心处圆形钢网单元即可,大大降低封堵结构拆除、舱停靠平台3套升降立柱降落、内外圈护栏降落的时间和劳动量。This blocking structure does not require lowering the inner and outer ring guardrails of the cabin docking platform, and does not require lowering three sets of lifting columns. The trapezoidal blocking structure on the outer ring of the cabin docking platform does not need to be dismantled. When the feed cabin enters the port, only the central round steel ring needs to be dismantled. The net unit is enough, which greatly reduces the time and labor required for dismantling the blocking structure, lowering the three sets of lifting columns on the cabin docking platform, and lowering the inner and outer ring guardrails.
附图说明Description of drawings
为了更清楚地说明本发明具体实施方式或现有技术中的技术方案,下面将对具体实施方式或现有技术描述中所需要使用的附图作简单的介绍,显而易见地,下面描述中的附图是本发明的一些实施方式,对于本领域普通技术人员来讲,在不付出创造性劳动的前提下,还可以根据这些附图获得其他的附图。In order to more clearly explain the specific embodiments of the present invention or the technical solutions in the prior art, the following will briefly introduce the drawings that need to be used in the description of the specific embodiments or the prior art. Obviously, the drawings in the following description The drawings illustrate some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without exerting any creative effort.
图1为本发明提供的柔性封堵结构在封堵状态的整体结构示意图;Figure 1 is a schematic diagram of the overall structure of the flexible blocking structure provided by the present invention in a blocking state;
图2为FAST反射面中心孔在未封堵状态的结构示意图;Figure 2 is a schematic structural diagram of the center hole of the FAST reflective surface in an unblocked state;
图3为本发明提供的类梯形钢网单元的结构示意图;Figure 3 is a schematic structural diagram of the trapezoidal steel mesh unit provided by the present invention;
图4为本发明提供的走梯处类梯形钢网单元的结构示意图;Figure 4 is a schematic structural diagram of the trapezoidal steel mesh unit at the stairwell provided by the present invention;
图5为本发明提供的走梯处钢网单元柔性盖的结构示意图;Figure 5 is a schematic structural diagram of the flexible cover of the steel mesh unit at the staircase provided by the present invention;
图6为本发明提供的反射面板立面封堵单元的上端与反射面板,以及类梯形钢网单元、走梯处类梯形钢网单元的长直顶边与FAST反射面中心正五边形孔边缘的主索的连接结构示意图;Figure 6 shows the upper end of the reflective panel facade sealing unit and the reflective panel provided by the present invention, as well as the trapezoidal steel mesh unit, the long straight top edge of the trapezoidal steel mesh unit at the staircase and the regular pentagonal hole in the center of the FAST reflective surface. Schematic diagram of the connection structure of the main cable at the edge;
图7为本发明提供的反射面板与反射面板立面封堵单元的上端通过开口销、平垫圈实现固定连接的连接结构示意图;Figure 7 is a schematic diagram of the connection structure in which the upper ends of the reflective panel and the reflective panel facade sealing unit provided by the present invention are fixedly connected through cotter pins and flat washers;
图8为本发明提供的类梯形钢网单元以及所述走梯处类梯形钢网单元的圆弧底边与FAST舱停靠平台设备的环梁平台处的外圈护栏、走梯平台护栏的连接结构示意图;Figure 8 shows the connection between the trapezoidal steel mesh unit provided by the present invention and the arc bottom edge of the trapezoidal steel mesh unit at the stairway and the outer ring guardrail at the ring beam platform of the FAST cabin docking platform equipment and the stairway platform guardrail. Schematic;
图9为本发明提供的中心圆形钢网单元通过单钩与FAST舱停靠平台的内护栏立管可拆卸连接的连接结构示意图;Figure 9 is a schematic diagram of the connection structure in which the central circular steel mesh unit provided by the present invention is detachably connected to the inner guardrail riser of the FAST cabin docking platform through a single hook;
图10为本发明提供的单钩的结构示意图;Figure 10 is a schematic structural diagram of the single hook provided by the present invention;
图11为本发明提供的双钩的结构示意图;Figure 11 is a schematic structural diagram of the double hook provided by the present invention;
图标:1-反射面板立面封堵单元;2-类梯形钢网单元;3-走梯处类梯形钢网单元;4-走梯处钢网单元柔性盖;5-中心圆形钢网单元;6- 反射面板;7-主索;8-开口销;9-平垫圈;10-尼龙带;11-双钩;12- 魔术贴;13-单钩。Icon: 1-reflective panel facade sealing unit; 2-trapezoidal steel mesh unit; 3-trapezoidal steel mesh unit at stairs; 4-flexible cover of steel mesh unit at stairs; 5-center circular steel mesh unit ; 6-Reflective panel; 7-Main cable; 8-Cotter pin; 9-Flat washer; 10-Nylon strap; 11-Double hook; 12-Velcro; 13-Single hook.
具体实施方式Detailed ways
下面将结合附图对本发明的技术方案进行清楚、完整地描述,显然,所描述的实施例是本发明一部分实施例,而不是全部的实施例。基于本发明中的实施例,本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其他实施例,都属于本发明保护的范围。The technical solution of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are some, not all, of the embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts fall within the scope of protection of the present invention.
以下结合附图对本发明的具体实施方式进行详细说明。应当理解的是,此处所描述的具体实施方式仅用于说明和解释本发明,并不用于限制本发明。Specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described here are only used to illustrate and explain the present invention, and are not intended to limit the present invention.
结合图1至图11所示,本申请提供了一种FAST反射面中心孔柔性封堵结构,包括:5块反射面板立面封堵单元1、4块类梯形钢网单元2、1块走梯处类梯形钢网单元3、1块走梯处钢网单元柔性盖4 以及1块中心圆形钢网单元5;其中,As shown in Figures 1 to 11, this application provides a flexible sealing structure for the center hole of a FAST reflective surface, including: 5 reflective panel facade sealing units 1, 4 trapezoidal steel mesh units 2, and 1 walking A trapezoidal steel mesh unit 3 at the ladder, a flexible cover 4 for the steel mesh unit at the staircase, and a central circular steel mesh unit 5; among them,
5块所述反射面板立面封堵单元1与FAST反射面中心五边形孔的五条边一一对应,反射面板立面封堵单元1的上端与FAST反射面中心五边形孔边缘的反射面板6固定连接,反射面板立面封堵单元1 的下端为自由端,其延伸至FAST反射面中心孔边缘主索7后方,并与主索7搭接;5块反射面板立面封堵单元是为了封堵从反射面板至主索处的缝隙,遮挡此处的地面热噪声。该结构将钢网覆盖正五边形孔边缘处的反射面板上,反射面板由1mm厚的铝合金板制作,该板上冲有5mm的小孔,孔密度满足该板有50%的透光率。利用一些5mm孔、开口销、平垫圈将封堵用的钢网与面板连接。The five reflective panel facade sealing units 1 are in one-to-one correspondence with the five sides of the pentagonal hole in the center of the FAST reflective surface. The panel 6 is fixedly connected, and the lower end of the reflective panel facade sealing unit 1 is the free end, which extends to the back of the main cable 7 at the edge of the center hole of the FAST reflective surface, and overlaps with the main cable 7; 5 reflective panel facade sealing units It is to seal the gap from the reflective panel to the main cable and block the ground thermal noise here. This structure covers the steel mesh on the reflective panel at the edge of the regular pentagonal hole. The reflective panel is made of a 1mm thick aluminum alloy plate. The plate is punched with 5mm holes. The density of the holes is such that the plate can transmit 50% of the light. Rate. Use some 5mm holes, cotter pins, and flat washers to connect the blocking steel mesh to the panel.
4块所述类梯形钢网单元2以及所述走梯处类梯形钢网单元3的长直顶边与FAST反射面中心正五边形孔边缘的主索7连接,圆弧底边与FAST舱停靠平台设备的环梁平台处的外圈护栏、走梯平台护栏连接;The long straight top edges of the four trapezoidal steel mesh units 2 and the trapezoidal steel mesh unit 3 at the staircase are connected to the main cable 7 at the edge of the regular pentagonal hole in the center of the FAST reflective surface, and the arc bottom edge is connected to the FAST The outer ring guardrail at the ring beam platform of the cabin docking platform equipment and the guardrail on the ladder platform are connected;
所述走梯处类梯形钢网单元3在FAST舱停靠平台设备的环梁平台的走梯平台处设置有一供工作人员上下走梯平台的开口,所述走梯处钢网单元柔性盖4覆盖在所述开口处;走梯处钢网单元柔性盖4 与走梯处类梯形钢网单元的相邻边粘接连接,走梯处钢网单元柔性盖 4与走梯平台护栏的连接处通过挂钩可拆卸连接;本申请中4块梯形钢网单元、1块走梯处梯形钢网单元都是类梯形结构,只是走梯处钢网单元处有走梯、走梯平台,在走梯处开一个长方形的孔,以便人员上下方便。该长方形孔用一块钢网覆盖,有人员通过时可以方便的移开和覆盖。The ladder-shaped steel mesh unit 3 at the stairway is provided with an opening for workers to get up and down the stairway platform at the stairway platform of the ring beam platform of the FAST cabin docking platform equipment, and the steel mesh unit at the stairway is covered by a flexible cover 4 At the opening; the flexible cover 4 of the steel mesh unit at the staircase is bonded to the adjacent sides of the trapezoidal steel mesh unit at the staircase, and the connection between the flexible cover 4 of the steel mesh unit at the staircase and the guardrail of the staircase platform passes through The hooks can be detachably connected; in this application, the 4 ladder-shaped steel mesh units and the 1 ladder-shaped steel mesh unit at the stairway are all quasi-trapezoid structures, except that the steel mesh unit at the stairway has a stairway and a stairway platform. Make a rectangular hole to make it easier for people to get in and out. The rectangular hole is covered with a piece of steel mesh, which can be easily removed and covered when people pass through.
所述中心圆形钢网单元5覆盖在FAST舱停靠平台环梁平台的中心孔处,并与FAST舱停靠平台的内护栏立管可拆卸连接。The central circular steel mesh unit 5 covers the central hole of the ring beam platform of the FAST cabin docking platform, and is detachably connected to the inner guardrail riser of the FAST cabin docking platform.
作为一种进一步的技术方案,反射面板6与所述反射面板立面封堵单元1的连接处冲有5mm的小孔,反射面板6与反射面板立面封堵单元1的上端通过开口销8、平垫圈9实现固定连接。As a further technical solution, a 5 mm hole is punched at the connection between the reflective panel 6 and the reflective panel facade sealing unit 1, and the upper ends of the reflective panel 6 and the reflective panel facade sealing unit 1 pass through a cotter pin 8 , flat washer 9 to achieve fixed connection.
作为一种进一步的技术方案,所述类梯形钢网单元2以及所述走梯处类梯形钢网单元3的长直顶边上均匀固定设置有若干个尼龙带 10,类梯形钢网单元2以及所述走梯处类梯形钢网单元3的长直顶边通过所述尼龙带10与FAST反射面中心正五边形孔边缘的主索7连接。As a further technical solution, several nylon belts 10 are evenly fixed on the long straight top edges of the trapezoidal steel mesh unit 2 and the trapezoidal steel mesh unit 3 at the stairway. The trapezoidal steel mesh unit 2 And the long straight top edge of the trapezoidal steel mesh unit 3 at the staircase is connected to the main cable 7 at the edge of the regular pentagonal hole in the center of the FAST reflective surface through the nylon belt 10.
作为一种进一步的技术方案,所述类梯形钢网单元2以及所述走梯处类梯形钢网单元3的圆弧底边通过双钩11与FAST舱停靠平台设备的环梁平台处的外圈护栏、走梯平台护栏连接。As a further technical solution, the arc bottom edges of the trapezoidal steel mesh unit 2 and the trapezoidal steel mesh unit 3 at the stairway are connected to the outer ring of the ring beam platform of the FAST cabin docking platform equipment through double hooks 11 Guardrails and ladder platform guardrail connections.
作为一种进一步的技术方案,所述走梯处钢网单元柔性盖4与所述走梯处类梯形钢网单元的连接处设置有魔术贴12,二者通过所述魔术贴12粘接连接。As a further technical solution, a Velcro 12 is provided at the connection between the flexible cover 4 of the steel mesh unit at the stairway and the trapezoidal steel mesh unit at the stairway, and the two are adhesively connected through the Velcro 12 .
作为一种进一步的技术方案,所述中心圆形钢网单元5通过单钩13与FAST舱停靠平台的内护栏立管可拆卸连接;中心圆形钢网单元 5的周向边缘内缝制一根直径5mm的钢丝绳;所述单钩13勾在所述钢丝绳上之后,挂在FAST舱停靠平台的内护栏立管上。当馈源舱入港停靠时,只是拆除该圆形钢网封堵单元即可。FAST舱停靠平台环梁平台外圈的封堵结构不用拆卸。As a further technical solution, the central circular steel mesh unit 5 is detachably connected to the inner guardrail riser of the FAST cabin docking platform through a single hook 13; a circumferential edge of the central circular steel mesh unit 5 is sewn inside. A steel wire rope with a diameter of 5 mm; after the single hook 13 is hooked on the steel wire rope, it is hung on the inner guardrail riser of the FAST cabin docking platform. When the feed cabin docks at the port, just remove the circular steel mesh blocking unit. The sealing structure of the outer ring of the ring beam platform of the FAST cabin docking platform does not need to be disassembled.
作为一种进一步的技术方案,所述类梯形钢网单元2以及所述走梯处类梯形钢网单元3在高度方向设置有预留量,即:其高度大于其所要封堵位置处在复位状态下的实际高度。优选地,所述预留量为 0.5米。设置该预留量是为了适应主索的位置变化,因为环梁平台处的护栏是固定的,正五边形边缘主索在FAST观测工况的位置时变化的,通过设置预留量以适应主索的位置变化,使梯形封堵单元在FAST 观测工况不被张拉损坏。As a further technical solution, the trapezoidal steel mesh unit 2 and the trapezoidal steel mesh unit 3 at the stairway are provided with a reserve amount in the height direction, that is, their height is greater than the desired blocking position when they are reset. The actual height in the state. Preferably, the reserved amount is 0.5 meters. The reserve amount is set to adapt to the change in the position of the main cable, because the guardrail at the ring beam platform is fixed, and the position of the regular pentagonal edge main cable changes when the FAST observation condition is used. The reserve amount is set to adapt to The position change of the main cable prevents the trapezoidal blocking unit from being damaged by tension during FAST observation conditions.
作为一种进一步的技术方案,所述中心圆形钢网单元5在直径方向留有一定的预留量,即:其直径大于FAST舱停靠平台环梁平台的中心孔直径。优选地,所述预留量不小于0.6米。在FAST舱停靠平台环梁平台内部,是一个直径9.6米的圆孔,该孔用一块制作好的一块完整的圆形钢网单元封堵。该圆形单元的直径大于9.6米,留有一定的直径预留量,以便适应钢网单元的自然下垂。As a further technical solution, the central circular steel mesh unit 5 has a certain reserve in the diameter direction, that is, its diameter is larger than the diameter of the central hole of the ring beam platform of the FAST cabin docking platform. Preferably, the reserved amount is not less than 0.6 meters. Inside the ring beam platform of the FAST cabin docking platform, there is a circular hole with a diameter of 9.6 meters. The hole is blocked with a complete circular steel mesh unit made of one piece. The diameter of the circular unit is greater than 9.6 meters, with a certain diameter reserve left to accommodate the natural sagging of the steel mesh unit.
本发明利用FAST舱停靠平台设备的环梁平台及护栏,将舱停靠平台设备的环梁平台的上表面板作为封堵结构的一部分参与封堵,将护栏作为钢网封堵单元的固定连接支撑件。其中4块梯形钢网单元和 1块走梯处梯形钢网单元的长底边与正五边形的边缘主索连接,圆弧边与环梁平台处的外圈护栏、走梯平台护栏用挂钩等连接。其具有如下优点:The present invention utilizes the ring beam platform and guardrails of the FAST cabin docking platform equipment. The upper surface panel of the ring beam platform of the cabin docking platform equipment is used as part of the sealing structure to participate in the sealing, and the guardrail is used as a fixed connection support of the steel mesh sealing unit. pieces. Among them, the long bottom sides of 4 trapezoidal steel mesh units and 1 trapezoidal steel mesh unit at the staircase are connected to the edge main cables of the regular pentagon, and the arc edges are connected to the outer guardrails at the ring beam platform and the guardrails at the staircase platform. Hooks and other connections. It has the following advantages:
不用降下舱停靠平台的内、外圈护栏,不用降下3套升降立柱,舱停靠平台外圈的梯形封堵结构不用拆除,馈源舱入港时,只需拆卸中心处圆形钢网单元即可,大大降低封堵结构拆除、舱停靠平台3 套升降立柱降落、内外圈护栏降落的时间和劳动量。There is no need to lower the inner and outer ring guardrails of the cabin docking platform, and there is no need to lower the three sets of lifting columns. The trapezoidal blocking structure on the outer ring of the cabin docking platform does not need to be dismantled. When the feed cabin enters the port, only the central circular steel mesh unit needs to be dismantled. , greatly reducing the time and labor required for dismantling the blocking structure, lowering the three sets of lifting columns on the cabin docking platform, and lowering the inner and outer ring guardrails.
最后应说明的是:以上各实施例仅用以说明本发明的技术方案,而非对其限制;尽管参照前述各实施例对本发明进行了详细的说明,本领域的普通技术人员应当理解:其依然可以对前述各实施例所记载的技术方案进行修改,或者对其中部分或者全部技术特征进行等同替换;而这些修改或者替换,并不使相应技术方案的本质脱离本发明各实施例技术方案的范围。Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention, but not to limit it. Although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: The technical solutions described in the foregoing embodiments can still be modified, or some or all of the technical features can be equivalently replaced; and these modifications or substitutions do not deviate from the essence of the corresponding technical solutions from the technical solutions of the embodiments of the present invention. scope.
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Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1982000545A1 (en) * | 1980-07-28 | 1982-02-18 | R Luly | Parabolic reflector and method of making the same |
CN205242313U (en) * | 2015-11-16 | 2016-05-18 | 交通运输部公路科学研究所 | Prevent stumbling and hinder trapezoidal block of preventing |
CN108091510A (en) * | 2017-12-29 | 2018-05-29 | 苏州达方电子有限公司 | Press-key structure |
CN108134211A (en) * | 2017-12-23 | 2018-06-08 | 中国人民解放军战略支援部队信息工程大学 | For the arbitrary line-linear polarization converter and conversion method of plane satellite antenna |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
SE9802333D0 (en) * | 1998-06-29 | 1998-06-29 | Astra Pharma Prod | Novel combination |
-
2018
- 2018-06-13 CN CN201810605938.4A patent/CN108832306B/en active Active
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1982000545A1 (en) * | 1980-07-28 | 1982-02-18 | R Luly | Parabolic reflector and method of making the same |
CN205242313U (en) * | 2015-11-16 | 2016-05-18 | 交通运输部公路科学研究所 | Prevent stumbling and hinder trapezoidal block of preventing |
CN108134211A (en) * | 2017-12-23 | 2018-06-08 | 中国人民解放军战略支援部队信息工程大学 | For the arbitrary line-linear polarization converter and conversion method of plane satellite antenna |
CN108091510A (en) * | 2017-12-29 | 2018-05-29 | 苏州达方电子有限公司 | Press-key structure |
Non-Patent Citations (1)
Title |
---|
大射电望远镜面板开合机构传动装置的设计;高思齐;古学东;郭永卫;赵保庆;王启明;王自勤;石伟朝;;机械设计(05);全文 * |
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