CN212225776U - FAST reflecting surface unit self-adaptive connecting mechanism reinforcing device - Google Patents
FAST reflecting surface unit self-adaptive connecting mechanism reinforcing device Download PDFInfo
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- CN212225776U CN212225776U CN202020825310.8U CN202020825310U CN212225776U CN 212225776 U CN212225776 U CN 212225776U CN 202020825310 U CN202020825310 U CN 202020825310U CN 212225776 U CN212225776 U CN 212225776U
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Abstract
The utility model belongs to the technical field of FAST radio astronomical telescope technique and specifically relates to a FAST plane of reflection unit self-adaptation coupling mechanism reinforcing apparatus is related to, include: the upper reinforcing plate, the node shaft clamping tile, the two upper chord clamping tiles and the plurality of bolt fasteners are arranged on the upper reinforcing plate; the upper reinforcing plate is penetrated and installed on the small panel supporting stud; the upper reinforcing plate is arranged above one node shaft and the two upper chords corresponding to the node shaft; the node shaft clamping bush is clamped and sleeved below the node shaft, and the node shaft clamping bush is connected with the upper reinforcing plate through a bolt fastener; the two upper chord clamping tiles are respectively clamped and sleeved below the two upper chord clamping tiles, and each upper chord clamping tile is connected with the upper reinforcing plate through a bolt fastener. The self-adaptive connecting mechanism is reinforced by the reinforcing structure, so that the occurrence of faults of the self-adaptive connecting mechanism can be reduced, and a large amount of maintenance work is avoided after the faults occur.
Description
Technical Field
The utility model belongs to the technical field of FAST radio astronomical telescope technique and specifically relates to a FAST plane of reflection unit self-adaptation coupling mechanism reinforcing apparatus is related to.
Background
The Spherical radio Telescope (FAST) with the caliber of 500 meters is a great scientific device in the fifteen seasons of China, is the biggest single-caliber radio astronomical Telescope in the world, and has three independent innovations: the natural karst depression of Guizhou is used as a table address, an actively deformed reflecting surface and a flexible light feed source support dragged by six cables in parallel.
The FAST reflecting surface uses flexible cable nets as the main supporting structure and the key part of active deformation. The cable net structure comprises 6670 main cables, 2225 down-pulling cables and 2225 cable net node disks. Each of the pull-down cables is connected to a hydraulic actuator and anchored to the ground foundation. Each node disc and 6 adjacent main cables are connected with each other and woven together to form a huge main cable net which is also the basis of the geometrical surface shape of the FAST reflecting surface. The change of the surface shape of the reflecting surface can be realized by coordinately controlling the telescopic motion of 2225 hydraulic actuators to drive the main cable and the node disc to move, such as a reference spherical surface (curvature radius of 300 m) and a rotating paraboloid (caliber of 300 m) required by astronomical observation.
The main cable net is mainly divided into 4300 equilateral triangle domains and 150 edge quadrilateral domains, and each node disk is located at the vertex position of the triangle and quadrilateral. And each triangular domain and each quadrilateral domain of the main cable net are provided with all-aluminum alloy reflecting surface units to cover the whole surface domain to form an FAST reflecting surface. And a gap of about 65mm is reserved between adjacent reflecting surface units, so that the adjacent units cannot collide and interfere when the surface shape of the reflecting surface is changed. Wherein the side of the triangular unit is about 11 meters, and the weight is about 450 and 480 Kg. And each vertex of the reflecting surface unit is respectively connected with the corresponding cable net node disc in a restraining way through a self-adaptive connecting mechanism. For the triangular unit, different vertices are connected with different adaptive connection mechanisms, which can be divided into three types, namely 0# connection mechanism, 1# connection mechanism and 2# connection mechanism. The 0# connecting mechanism restrains 3 translational degrees of freedom, the 1# connecting mechanism restrains 2 translational degrees of freedom, and the 2# connecting mechanism restrains 1 translational degree of freedom. The six degrees of freedom of the rigid reflecting surface unit are restrained by the restraining connection mode, so that the reflecting surface unit is connected with the cable net structure in a simply supported restraining mode, and additional internal force caused by movement deformation of the cable net structure can be avoided.
The adaptive connection mechanism of the FAST reflecting surface unit is a completely innovative product, no ready examples are available for reference, and the design and installation process of the original product needs to be continuously perfected in a failure-improvement-update cycle. The lubrication of the self-adaptive connecting mechanism is very important, but the lubricating performance is deteriorated and even possibly fails along with the increase of the working time due to the fact that the self-adaptive connecting mechanism works under the field environment for a long time, so that the self-adaptive connecting mechanism cannot counteract the relative position change of the reflecting surface when the reflecting surface is actively deformed through internal sliding, and the reflecting surface unit is endangered.
Referring to fig. 1, this figure illustrates the connection between the adaptive connection mechanism of the FAST reflecting surface unit and the reflecting surface back frame. The connecting mechanism 1 (can be any one of 0#, 1# and 2# connecting mechanisms), a small reflection panel supporting stud 2, a flat washer 4 and a nut 3 are connected to a vertical hole of a node shaft-ball node of the connecting mechanism and used for supporting a small reflection panel, and when the small reflection panel needs to be folded, the nut 3 and the flat washer 4 on the upper part are detached, the small reflection plate is folded and supported on the flat washer 4 and the nut 3 on the lower part; when the small panel needs to be fixed, the detached flat washer 4 and the nut 3 are installed, and the supporting plate of the small panel is fastened by the upper washer nut and the lower washer nut. The node axle ball node of the connecting mechanism 1 is respectively connected with the upper chord 5, the upper chord 6 and a web member 7, and the connection is realized by screwing a high-strength bolt of a member into a screw hole of the bolt ball node. However, when a failure occurs at the connection mechanism, bending of the member upper chord 5, the upper chord 6, the web member 7, and breakage or deformation of the high-strength bolts of the member may occur.
The information disclosed in this background section is only for enhancement of understanding of the general background of the invention and should not be taken as an acknowledgement or any form of suggestion that this information constitutes prior art already known to a person skilled in the art.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a FAST plane of reflection unit self-adaptation coupling mechanism reinforcing apparatus to solve the technical problem who exists among the prior art.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
the utility model provides a FAST plane of reflection unit self-adaptation coupling mechanism reinforcing apparatus, it includes: the upper reinforcing plate, the node shaft clamping tile, the two upper chord clamping tiles and the plurality of bolt fasteners are arranged on the upper reinforcing plate; the upper reinforcing plate is penetrated and installed on the small panel supporting stud; the upper reinforcing plate is arranged above one node shaft and the two upper chords corresponding to the node shaft; the node shaft clamping bush is clamped and sleeved below the node shaft, and the node shaft clamping bush is connected with the upper reinforcing plate through a bolt fastener; the two upper chord clamping tiles are respectively clamped and sleeved below the two upper chord clamping tiles, and each upper chord clamping tile is connected with the upper reinforcing plate through a bolt fastener.
As a further aspect, the bolt fastener includes: the high-strength bolt comprises a high-strength bolt, and a spring washer and a flat washer which are sleeved on the high-strength bolt.
As a further technical scheme, a half shaft hole used for being buckled above the node shaft is formed in the bottom of the upper reinforcing plate; the node shaft clamping tile is provided with a half shaft hole for clamping and sleeving the lower part of the node shaft; and epoxy resin glue is uniformly coated on the upper reinforcing plate and the half shaft hole surface of the node shaft clamping tile.
As a further technical scheme, a half shaft hole used for being buckled above the upper chord is formed in the bottom of the upper reinforcing plate; the upper chord clamping tile is provided with a half shaft hole for clamping and sleeving the lower part of the upper chord; and epoxy resin glue is uniformly coated on the hole surfaces of the upper reinforcing plate and the half shafts of the upper chord clamping tile.
As a further technical scheme, the upper reinforcing plate is provided with a through hole for the small panel supporting stud to pass through.
As a further technical scheme, the bottom of the upper reinforcing plate is provided with a containing space matched with the node shaft-ball node.
As a further technical solution, the node axis is any one of a node axis of a 0# connection mechanism, a node axis of a 1# connection mechanism, and a node axis of a 2# connection mechanism.
Adopt above-mentioned technical scheme, the utility model discloses following beneficial effect has:
the utility model provides a FAST plane of reflection unit self-adaptation coupling mechanism reinforcing apparatus, include: go up gusset plate, a node axle clamp tile, two upper chord clamping tiles and a plurality of bolt fastener, adopt this reinforced structure to consolidate self-adaptation coupling mechanism, can reduce the emergence of self-adaptation coupling mechanism trouble, carry out a large amount of maintenance work again after avoiding breaking down.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the technical solutions in the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a schematic diagram of a prior art adaptive connection mechanism for FAST reflecting surface units;
fig. 2 is a schematic view of the adaptive connection mechanism reinforcing apparatus for FAST reflecting surface unit provided in the present invention;
fig. 3 is a cross-sectional view of an adaptive connection mechanism reinforcing apparatus for a FAST reflecting surface unit according to an embodiment of the present invention;
fig. 4 is a sectional view of the upper chord part reinforcing structure assembly provided by the embodiment of the present invention.
Icon: 1-node axis; 2-small panel support studs; 3-a nut; 4-a flat washer; 5-upper chord; 6-upper chord; 7-web member; 8-high strength bolts; 9-a spring washer; 10-a flat washer; 11-upper chord clamping tile; 12-upper reinforcing plate; 13-node shaft clamping shoe.
Detailed Description
The technical solution of the present invention will be described clearly and completely with reference to the accompanying drawings, and obviously, the described embodiments are some, but not all embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.
The following detailed description of the embodiments of the present invention will be made with reference to the accompanying drawings. It is to be understood that the description of the embodiments herein is for purposes of illustration and explanation only and is not intended to limit the invention.
As shown in fig. 2 to 4, the present embodiment provides a fastening device for an adaptive connection mechanism of a FAST reflecting surface unit, which includes: the upper reinforcing plate 12, a node shaft clamping tile 13, two upper chord clamping tiles 11 and a plurality of bolt fasteners; the upper reinforcing plate 12 is mounted on the small panel support studs 2 in a penetrating manner (preferably, the upper reinforcing plate 12 is provided with through holes for the small panel support studs 2 to pass through); the upper reinforcing plate 12 is arranged above one node shaft 1 and two upper chords corresponding to the node shaft 1; the node shaft clamping tile 13 is clamped and sleeved below the node shaft 1, and the node shaft clamping tile 13 is connected with the upper reinforcing plate 12 through a bolt fastener; the two upper chord clamping tiles 11 are respectively clamped and sleeved below the two upper chord clamping tiles 11, and each upper chord clamping tile 11 is connected with the upper reinforcing plate 12 through a bolt fastener. Preferably, the node axis 1 is any one of the node axis 1 of the 0# connection mechanism, the node axis 1 of the 1# connection mechanism, and the node axis 1 of the 2# connection mechanism.
In this embodiment, the shape of the upper reinforcing plate 12 may be flexibly set according to actual needs.
For example: the cross section (projection plane) of the upper reinforcing plate 12 may be octagonal. The first edge is perpendicular to the axial direction of the node shaft 1, the second edge is perpendicular to the first edge, the third edge, the fourth edge, the fifth edge, the sixth edge and the seventh edge are sequentially connected with the second edge in an inclined mode, and the seventh edge is perpendicular to the first edge. Of course, this is just one form, and other forms are also within the scope of the present application.
In this embodiment, as a further technical solution, the bolt fastener includes: a high-strength bolt 8, and a spring washer 9 and a flat washer 10 fitted around the high-strength bolt 8.
In this embodiment, as a further technical solution, a half shaft hole for being buckled above the node shaft 1 is formed at the bottom of the upper reinforcing plate 12; the node shaft clamping tile 13 is provided with a half shaft hole which is used for being clamped and sleeved below the node shaft 1; and epoxy resin glue is uniformly coated on the hole surfaces of the upper reinforcing plate 12 and the half shafts of the node shaft clamping tile 13. Wherein, the bottom of the upper reinforcing plate 12 is provided with a containing space which is used for being matched with the spherical joint of the joint shaft 1. Correspondingly, the joint shaft clamping shoe 13 may also be provided with a receiving space for adapting to the ball joint of the joint shaft 1.
In this embodiment, correspondingly, a half shaft hole for being buckled above the upper chord is formed at the bottom of the upper reinforcing plate 12; the upper chord clamping tile 11 is provided with a half shaft hole for clamping and sleeving the lower part of the upper chord; the upper reinforcing plate 12 and the half shaft hole surface of the upper chord member clamping tile 11 are uniformly coated with epoxy resin glue.
Specifically, the shaft diameter of the node shaft 1 of the self-adaptive connecting mechanism is as follows
The upper reinforcing plate 12 and the node shaft clamping tile 13 are connected by a spring washer 9, a flat washer 10 and a high-strength bolt 8, the bolt is screwed according to the torque and sequence required by the mechanical installation specification, so that the upper reinforcing plate 12 and the node shaft clamping tile 13 are connected and fastened, and the hole size and tolerance are processed
Epoxy resin glue is coated when the hole and the node shaft 1 are installed and clamped tightly, the coated epoxy resin glue fills the gap between the hole and the shaft, and the reinforcing effect can be realized after the epoxy resin glue is solidified.
Specifically, the diameter of the upper chord member is the size
Therefore, the upper reinforcing plate 12 is connected with the upper chord clamping tile 11 by the spring washer 9, the flat washer 10 and the high-strength bolt 8, the bolt is screwed down according to the moment and sequence required by the mechanical installation specification, the upper reinforcing plate 12 is connected and fastened with the upper chord clamping tile 11, and then the processing is carried out, and the size and tolerance of the hole are
When the hole and the upper chord are installed and clamped tightly, epoxy resin glue is coated, and the coated epoxy resin glueThe resin adhesive fills the gap between the full hole shafts, and the reinforcing effect can be realized after the epoxy resin adhesive is solidified.
This embodiment is installed:
1) firstly, penetrating an upper reinforcing plate 12 of a node shaft through a small panel support stud 2 from the upper part, placing the upper reinforcing plate above the node shaft 1, the two upper chords 5 and the upper chord 6, and uniformly coating epoxy resin glue on half-shaft hole surfaces clamped by the upper reinforcing plate 12, the node shaft and the two upper chords before placing;
2) then, the half shaft hole surface of the node shaft clamping tile 13 is evenly coated with epoxy resin glue and is installed at the position shown in the figure from the lower part, a flat washer 10 and a spring washer 9 are placed from the upper part, a high-strength bolt 8 penetrates through the half shaft hole surface, and the high-strength bolt 8 is screwed into a threaded hole of the node shaft clamping tile 13.
3) Respectively and uniformly coating epoxy resin glue on the hole surfaces of the half shafts of the two upper chord clamping tiles 11, installing the half shafts at the positions (the positions of the upper chord 5 and the upper chord 6) shown in the figure from the lower part, placing a flat gasket 10 and a spring gasket 9 from the upper part, penetrating a high-strength bolt 8, and screwing the high-strength bolt 8 into a threaded hole of the upper chord clamping tile 11.
4) And respectively and alternately screwing the six high-strength bolts screwed into the three clamping tiles until the six high-strength bolts are fastened, and finishing the reinforcing work after the epoxy resin adhesive is solidified.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention.
Claims (7)
1. An adaptive connection mechanism reinforcing apparatus for a FAST reflecting surface unit, comprising: the upper reinforcing plate, the node shaft clamping tile, the two upper chord clamping tiles and the plurality of bolt fasteners are arranged on the upper reinforcing plate; the upper reinforcing plate is penetrated and installed on the small panel supporting stud; the upper reinforcing plate is arranged above one node shaft and the two upper chords corresponding to the node shaft; the node shaft clamping bush is clamped and sleeved below the node shaft, and the node shaft clamping bush is connected with the upper reinforcing plate through a bolt fastener; the two upper chord clamping tiles are respectively clamped and sleeved below the two upper chord clamping tiles, and each upper chord clamping tile is connected with the upper reinforcing plate through a bolt fastener.
2. The FAST reflector unit adaptive attachment mechanism reinforcing apparatus of claim 1, wherein said bolt fastener comprises: the high-strength bolt comprises a high-strength bolt, and a spring washer and a flat washer which are sleeved on the high-strength bolt.
3. The FAST reflector unit adaptive attachment mechanism reinforcing apparatus of claim 1,
the bottom of the upper reinforcing plate is provided with a half shaft hole which is used for being buckled above the node shaft;
the node shaft clamping tile is provided with a half shaft hole for clamping and sleeving the lower part of the node shaft;
and epoxy resin glue is uniformly coated on the upper reinforcing plate and the half shaft hole surface of the node shaft clamping tile.
4. The FAST reflector unit adaptive attachment mechanism reinforcing apparatus of claim 1,
the bottom of the upper reinforcing plate is provided with a half shaft hole which is used for being buckled above the upper chord;
the upper chord clamping tile is provided with a half shaft hole for clamping and sleeving the lower part of the upper chord;
and epoxy resin glue is uniformly coated on the hole surfaces of the upper reinforcing plate and the half shafts of the upper chord clamping tile.
5. The FAST reflector unit adaptive connection mechanism reinforcing apparatus of claim 1, wherein the upper reinforcing plate is provided with through holes for the small panel support studs to pass through.
6. The FAST reflector unit adaptive connection mechanism reinforcing apparatus of claim 1, wherein the bottom of said upper reinforcing plate is provided with a receiving space for adapting to the node of the node axis sphere.
7. The FAST reflector unit adaptive connection mechanism reinforcing apparatus according to claim 1, wherein the nodal axis is any one of a nodal axis of a 0# connection mechanism, a nodal axis of a 1# connection mechanism, and a nodal axis of a 2# connection mechanism.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020825310.8U CN212225776U (en) | 2020-05-18 | 2020-05-18 | FAST reflecting surface unit self-adaptive connecting mechanism reinforcing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020825310.8U CN212225776U (en) | 2020-05-18 | 2020-05-18 | FAST reflecting surface unit self-adaptive connecting mechanism reinforcing device |
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| Publication Number | Publication Date |
|---|---|
| CN212225776U true CN212225776U (en) | 2020-12-25 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020825310.8U Active CN212225776U (en) | 2020-05-18 | 2020-05-18 | FAST reflecting surface unit self-adaptive connecting mechanism reinforcing device |
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| Country | Link |
|---|---|
| CN (1) | CN212225776U (en) |
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- 2020-05-18 CN CN202020825310.8U patent/CN212225776U/en active Active
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