CN109752903B - Truss structure for remote sensing camera and assembling method thereof - Google Patents
Truss structure for remote sensing camera and assembling method thereof Download PDFInfo
- Publication number
- CN109752903B CN109752903B CN201811630209.0A CN201811630209A CN109752903B CN 109752903 B CN109752903 B CN 109752903B CN 201811630209 A CN201811630209 A CN 201811630209A CN 109752903 B CN109752903 B CN 109752903B
- Authority
- CN
- China
- Prior art keywords
- truss
- connector
- column
- glue
- truss column
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Landscapes
- Joining Of Building Structures In Genera (AREA)
- Studio Devices (AREA)
Abstract
The invention relates to a truss structure for a remote sensing camera, which comprises a first truss column, a second truss column, a plurality of truss rods and a plurality of connectors, wherein the first truss column is connected with the second truss column; a connector is connected respectively at the both ends of truss, the both ends of truss respectively corresponding to first purlin post with the second purlin post and through the corresponding connector with first purlin post with second purlin post fixed connection, on corresponding first purlin post or second purlin post were located to the connector cover, and clearance fit between the two, connector and first purlin post and second purlin post adoption mode fixed connection who splices. The truss framework provided by the invention has the advantages of short installation period, small size error and high reliability.
Description
Technical Field
The invention relates to the technical field of aerospace optical remote sensing, in particular to a truss structure for a remote sensing camera and an assembling method thereof.
Background
With the improvement of science and technology and the continuous improvement of the aerospace remote sensing level, the human demand for the large-caliber long-focus remote sensing camera is more and more. As the caliber and the focal length of the remote sensing camera are continuously enlarged, the mass and the volume of the remote sensing camera become large. In order to ensure that the performance of the whole camera meets the index requirements, the rigidity and the strength of a main bearing structure of a camera body are required to be very high. The truss rod structural design concept conforms to the structural optimization design principle that the bending load of the variable structural part is the tension and compression load, and has the characteristics of high specific stiffness and suitability for a space optical system with higher requirement on light weight degree, so that the design of the optical camera with large caliber adopts a truss rod main body structural form, such as Hubo and the like.
At present, the installation and adjustment process of a truss structure body of a remote sensing camera is generally that a truss rod is fixedly connected with a rod joint in advance and then is connected with a truss frame through a trimming pad, and the installation and adjustment method has the following problems: firstly, the truss rod installation needs to be measured for many times, and the repair and adjustment cushion is researched and repaired, so that the installation accuracy can be ensured, the installation and adjustment period is long, the efficiency is low, and in addition, as the researched and repaired repair and adjustment cushion can not reach the theoretical size, certain assembly stress exists when each truss rod is installed; secondly, due to the fact that the number of the truss rods is large, the truss rods over-constrain the frames, and the actual positions of the frames are prone to deviate from the theoretical positions.
In view of the above, it is desirable to provide a new truss structure for a remote sensing camera and an assembling method thereof.
Disclosure of Invention
The invention provides a truss structure for a remote sensing camera and an assembling method thereof, wherein the truss structure is short in installation period, small in size error and high in reliability.
The invention provides a truss structure for a remote sensing camera, which comprises a first truss column, a second truss column, a plurality of truss rods and a plurality of connectors, wherein the first truss column is connected with the second truss column; a connector is connected respectively at the both ends of truss, the both ends of truss respectively corresponding to first purlin post with the second purlin post and through the corresponding connector with first purlin post with second purlin post fixed connection, on corresponding first purlin post or second purlin post were located to the connector cover, and clearance fit between the two, connector and first purlin post and second purlin post adoption mode fixed connection who splices.
In a preferred embodiment, a plurality of first mounting holes are formed in one side of the first truss column, and a plurality of second mounting holes corresponding to the plurality of first mounting holes are formed in one side of the second truss column; the first mounting hole and the second mounting hole are both circular and are provided with internal threads; the connector cross-section is just the ring form the excircle surface of connector be provided with can with first mounting hole or second mounting hole complex external screw thread, in the first mounting hole or the second mounting hole that the outside rubber coating back screw in of connector corresponds.
In a preferred embodiment, one end of each spar is received in a connector head, the spar being both able to slide back and forth along the axial direction of the connector head and to rotate about the axial direction of the connector head.
In a preferred embodiment, the truss is in a strip-shaped cylindrical shape, and the fit size gap between the connecting head and the truss is 0.1mm-0.15 mm.
In a preferred embodiment, a glue injection hole and an observation hole which are communicated with the inner accommodating cavity are formed in the outer surface of the connector; the number of the glue injection holes is one, and the glue injection holes are used for injecting bonding glue into the connector; the quantity of observation hole is two at least, and during the injecting glue, each observation hole all need have the bonding glue to spill over, and the connector with the transition position of longeron also has gluey to spill over.
In a preferred embodiment, each truss has a length no greater than a distance between the corresponding first mounting hole and the corresponding second mounting hole.
The invention also provides an assembly method of the truss structure for the remote sensing camera, which comprises the following steps:
after a layer of thin glue is coated on the connecting surface of the truss rod connected with the connector, the truss rod is pre-connected with the connector;
after the truss is pre-connected with the connectors, gluing the connectors at two ends of the truss to respectively fix the connectors with the first truss column and the second truss column;
after the connector is fixed to the first truss column and the second truss column, adjusting the relative position of the truss rod and the connector along the axial direction of the connector;
after the relative positions of the truss and the connector are adjusted, glue is injected into an assembly gap between the truss and the connector through the glue injection holes, so that glue is ensured to overflow from all observation holes, glue also overflows from the transition position between the connector and the truss, and the overflowed glue is cleaned;
and finishing the assembly after the adhesive layer is completely cured.
In a preferred embodiment, the step of pre-connecting the beam and the connector after applying a thin layer of glue on the connecting surface of the beam and the connector further comprises:
fixing the first truss column and the second truss column through an external support member to ensure that an accurate dimensional position relation is established between the first truss column and the second truss column, and the distance between the first truss column and the second truss column is adjustable within an allowable tolerance range;
the step of completely curing the glue layer further comprises the following steps:
removing an external support for securing the first and second spar.
In a preferred embodiment, the step of pre-connecting the beam and the connector after applying a thin layer of glue on the connecting surface of the beam and the connector further comprises:
try one by one and install the connector to one the truss to and try one by one the connector to first purlin post second purlin post, wherein, the connector with the fit dimension clearance of truss is 0.1mm-0.15mm, in order to ensure the truss is relative the connector all slides the setting in axis direction and circumferencial direction.
According to the truss framework provided by the invention, the installation period is shortened by positioning the first truss column and the second truss column at one time and completing subsequent assembly; and the girders are free to slide or rotate in the corresponding connectors during installation, so that there are no internal stresses in the girders. The truss framework provided by the invention has the advantages of short installation period, small size error and high reliability.
Drawings
Fig. 1 is a schematic structural diagram of a truss structure for a remote sensing camera according to the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1, the present invention provides a truss structure 100 for a remote sensing camera, including a first truss column 10, a second truss column 20, a plurality of truss rods 30 and a plurality of connectors 40. A connector 40 is connected respectively at the both ends of truss 30, the both ends of truss 30 respectively correspond to first purlin post 10 with second purlin post 20 and through the connector 40 that corresponds with first purlin post 10 with first purlin post 20 fixed connection. The connector 40 is sleeved on the corresponding first truss column 10 or second truss column 20, and the connector and the second truss column are in clearance fit; the connector 40 is fixedly connected with the first truss column 10 and the second truss column 20 in a gluing mode.
In one embodiment, a plurality of first mounting holes 11 are opened at one side of the first truss column 10, and a plurality of second mounting holes 21 corresponding to the plurality of first mounting holes 11 are opened at one side of the second truss column 20. The first mounting hole 11 and the second mounting hole 21 are both circular and provided with internal threads; the cross-section of the connector 40 is circular ring-shaped, and the outer circle surface of the connector 40 is provided with an external thread which can be matched with the first mounting hole 11 or the second mounting hole 21. The outer side of the connecting head 40 is glued and then screwed into the corresponding first mounting hole 11 or second mounting hole 20.
The one end of truss 30 is acceptd in a connector 40, truss 30 can enough follow connector 40 axial direction reciprocating sliding can again wind connector 40 axial direction is rotatory. In this embodiment, the truss 30 is a strip cylinder, and the fit size gap between the connector 40 and the truss 30 is controlled to be 0.1-0.15 mm.
Furthermore, a glue injection hole 41 and an observation hole 42 which are communicated with the inner accommodating cavity of the connector 40 are formed in the outer surface of the connector; the number of the glue injection holes 41 is one, and the glue injection holes are used for injecting bonding glue into the inner accommodating cavity of the connector 40; the quantity of observation hole 42 is two at least, and during the injecting glue, each observation hole 42 all need to have the bonding glue to spill over, and the transition position of connector 40 and purlin 30 also has gluey to spill over.
Still further, the length of each truss 30 is not greater than the distance between the corresponding first mounting hole 11 and the corresponding second mounting hole 21, so that subsequent mounting and fastening are facilitated.
The invention also provides an assembly method of the truss structure for the remote sensing camera, which comprises the following steps:
and S1, fixing the first truss column 10 and the second truss column 20 through external supporting pieces, and ensuring that the accurate size position relation is established between the first truss column 10 and the second truss column 20, and the distance between the first truss column 10 and the second truss column 20 is adjustable within an allowable tolerance range.
The allowable tolerance range is adjustable, which can be understood as ensuring that the truss 30 and the connecting head 40 have enough assembly clearance; in other words, there is a certain amount of relative sliding between the first spar 10 and the second spar 20.
Further, before the step, pretreatment can be additionally carried out on the first truss column and the second truss column.
S2, try to install one by one connector 40 to one the purlin 30 to and try to install one by one connector 40 to first purlin post 10 second purlin post 20, wherein, connector 40 with the cooperation size clearance of purlin 30 is 0.1mm-0.15mm, in order to ensure the purlin 30 is relative connector 30 all slides the setting in axis direction and circumferencial direction.
In this step, in the trial assembly process, it is checked whether each constituent element meets the assembly requirement, for example, whether there is good contact between the first truss column or the second truss column and the mounting surface of the connector 40; whether the fit size gap between the connector 40 and the truss 30 meets the requirement, whether the connector and the truss can move mutually in the axial direction, whether the truss 30 can rotate around the axis relative to the connector 40, and the like; if the assembly requirements are not met, the unsatisfactory components need to be trimmed to meet the requirements.
Steps S3 to S7 are the main assembly process of the truss structure. The assembly process of all the girders and the connectors 40 and the mounting holes of the girders columns 10 and 20 are assembled in the same scheme. The detailed installation procedure is as follows:
s3, pre-connecting the truss 30 and the connector 40 after coating a thin layer of glue on the connection surface of the truss 30 connected to the connector 40;
s4, after the spar 30 is pre-connected with the connectors 40, gluing the connectors 40 at the two ends of the spar 30 to fix the connectors with the first spar 10 and the second spar 20 respectively;
s5, after the connecting head 40 is fixed to the first truss column 10 and the second truss column 20, adjusting the relative position of the truss 30 and the connecting head 40 along the axial direction of the connecting head 40,
s6, after the relative positions of the trussed beam 30 and the connector 40 are adjusted, injecting glue into the assembly gap between the trussed beam 30 and the connector 40 through the glue injection holes 41 to ensure that all the observation holes 42 are overflowed with glue, and the transition positions of the connector 40 and the trussed beam 30 are overflowed with glue to clean the overflowed glue;
s7, assembling the adhesive layer after the adhesive layer is completely cured;
s8, removing external supporting members for fixing the first and second girders 10 and 20.
In the above steps, step S1 and step S2 have no necessary precedence relationship; if the conditions are mature, the above two steps can also be omitted. When step S1 is omitted, step S8 may also be omitted.
According to the truss structure for the remote sensing camera and the assembling method, the first truss column 10 and the second truss column 20 are positioned at one time, and subsequent assembling is completed, so that the installation period is shortened; and the spar 30 is free to slide or rotate within the corresponding connector 40 during installation so that there are no internal stresses within the spar 30. The truss framework 100 provided by the invention has the advantages of short installation period, small size error and high reliability.
The above-mentioned embodiments only express one or several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (7)
1. A truss structure for a remote sensing camera, comprising: the truss comprises a first truss column, a second truss column, a plurality of truss rods and a plurality of connectors; the two ends of the truss are respectively connected with a connector, the two ends of the truss are respectively corresponding to the first truss column and the second truss column and are fixedly connected with the first truss column and the second truss column through the corresponding connectors, the connectors are sleeved on the corresponding first truss column or the second truss column and are in clearance fit with each other, and the connectors are fixedly connected with the first truss column and the second truss column in a glue joint mode;
a plurality of first mounting holes are formed in one side of the first truss column, and a plurality of second mounting holes corresponding to the first mounting holes are formed in one side of the second truss column; the first mounting hole and the second mounting hole are both circular and are provided with internal threads; the cross section of the connector is circular, external threads capable of being matched with the first mounting hole or the second mounting hole are arranged on the surface of the outer circle of the connector, and the outer side of the connector is coated with glue and then screwed into the corresponding first mounting hole or the second mounting hole;
a glue injection hole and an observation hole which are communicated with the inner accommodating cavity are formed in the outer surface of the connector; the number of the glue injection holes is one, and the glue injection holes are used for injecting bonding glue into the connector; the quantity of observation hole is two at least, and during the injecting glue, each observation hole all need have the bonding glue to spill over, and the connector with the transition position of longeron also has gluey to spill over.
2. The truss structure for a remote sensing camera of claim 1, wherein one end of each of the spars is received in a connector, the spars being capable of both reciprocating sliding along an axial direction of the connector and rotating around the axial direction of the connector.
3. The truss structure for a remote sensing camera of claim 2, wherein the truss is in the shape of a strip cylinder, and the fitting size gap between the connector and the truss is 0.1mm-0.15 mm.
4. The truss structure for a remote sensing camera of claim 1, wherein each truss rod has a length no greater than a distance between the corresponding first mounting hole and the corresponding second mounting hole.
5. A method of assembling a truss structure for a remote sensing camera as defined in claim 1, wherein the method of assembling comprises:
after a layer of thin glue is coated on the connecting surface of the truss rod connected with the connector, the truss rod is pre-connected with the connector;
after the truss is pre-connected with the connectors, gluing the connectors at two ends of the truss to respectively fix the connectors with the first truss column and the second truss column;
after the connector is fixed to the first truss column and the second truss column, the relative position of the truss rod and the connector is adjusted along the axial direction of the connector,
after the relative positions of the trussed beam and the connector are adjusted, glue is injected into an assembly gap between the trussed beam and the connector through the glue injection holes, so that glue is ensured to overflow from all observation holes, glue also overflows from the transition position between the connector and the trussed beam, and the overflowed glue is cleaned;
and finishing the assembly after the adhesive layer is completely cured.
6. The method of assembling a truss structure for a remote sensing camera of claim 5, wherein,
the truss and the connector are pre-connected after a layer of thin glue is coated on the connecting surface of the truss connected with the connector, and the method further comprises the following steps:
fixing the first truss column and the second truss column through an external support member to ensure that an accurate dimensional position relation is established between the first truss column and the second truss column, and the distance between the first truss column and the second truss column is adjustable within an allowable tolerance range;
the step of completely curing the glue layer further comprises the following steps:
removing an external support for securing the first and second spar.
7. The method of assembling a truss structure for a remote sensing camera of claim 6, wherein,
the truss and the connector are pre-connected after a layer of thin glue is coated on the connecting surface of the truss connected with the connector, and the method further comprises the following steps:
try one by one and install the connector to one the truss to and try one by one the connector to first purlin post second purlin post, wherein, the connector with the fit dimension clearance of truss is 0.1mm-0.15mm, in order to ensure the truss is relative the connector all slides the setting in axis direction and circumferencial direction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811630209.0A CN109752903B (en) | 2018-12-29 | 2018-12-29 | Truss structure for remote sensing camera and assembling method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811630209.0A CN109752903B (en) | 2018-12-29 | 2018-12-29 | Truss structure for remote sensing camera and assembling method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109752903A CN109752903A (en) | 2019-05-14 |
| CN109752903B true CN109752903B (en) | 2020-10-27 |
Family
ID=66404266
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811630209.0A Active CN109752903B (en) | 2018-12-29 | 2018-12-29 | Truss structure for remote sensing camera and assembling method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109752903B (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101571389B (en) * | 2009-06-05 | 2011-08-17 | 中国科学院长春光学精密机械与物理研究所 | Method for precisely assembling space remote sensing camera body structure |
| WO2012146283A1 (en) * | 2011-04-28 | 2012-11-01 | Trixter Ab | A method and a device for fastening an object in a fiber-reinforced composite material |
| CN104375360A (en) * | 2014-10-30 | 2015-02-25 | 北京空间机电研究所 | High-stable and semi-flexible supporting structure for secondary lens of space camera |
| CN104832511A (en) * | 2015-04-21 | 2015-08-12 | 中国科学院长春光学精密机械与物理研究所 | Method for controlling thickness of optical remote sensor space truss rod adhesive glue layer |
| CN105607216A (en) * | 2015-12-30 | 2016-05-25 | 中国科学院长春光学精密机械与物理研究所 | Large-size and high specific stiffness truss off-axis three-reflection optical system main support structure |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CH673305A5 (en) * | 1986-05-02 | 1990-02-28 | Emil Roth & Co Ag | Filling bars for jointed frame trusses - with holding elements fixed by specified plastic adhesive |
| CN2743875Y (en) * | 2004-10-28 | 2005-11-30 | 中国科学院长春光学精密机械与物理研究所 | Strucure of optical remote sensing camera frame |
| US8367307B2 (en) * | 2010-02-05 | 2013-02-05 | GM Global Technology Operations LLC | Solution to optical constraint on microtruss processing |
| WO2012005505A2 (en) * | 2010-07-08 | 2012-01-12 | Choi Ha Jung | Method for constructing truss structure temporarily assembled by using clamping means |
| KR101794683B1 (en) * | 2015-10-21 | 2017-11-07 | 한국철도기술연구원 | Launching Method of Composite CFT Truss Girder Bridge |
| CN205938369U (en) * | 2016-07-19 | 2017-02-08 | 深圳市澜骏网络科技信息服务有限公司 | Camera support |
| KR101870269B1 (en) * | 2016-11-08 | 2018-06-22 | 위덕대학교 산학협력단 | Strengthening apparatus of lightweight steel truss members by external prestressing |
| CN108825605A (en) * | 2018-07-24 | 2018-11-16 | 中国科学院长春光学精密机械与物理研究所 | A kind of assembly method of carbon fibre composite truss main structure and strut |
-
2018
- 2018-12-29 CN CN201811630209.0A patent/CN109752903B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101571389B (en) * | 2009-06-05 | 2011-08-17 | 中国科学院长春光学精密机械与物理研究所 | Method for precisely assembling space remote sensing camera body structure |
| WO2012146283A1 (en) * | 2011-04-28 | 2012-11-01 | Trixter Ab | A method and a device for fastening an object in a fiber-reinforced composite material |
| CN104375360A (en) * | 2014-10-30 | 2015-02-25 | 北京空间机电研究所 | High-stable and semi-flexible supporting structure for secondary lens of space camera |
| CN104832511A (en) * | 2015-04-21 | 2015-08-12 | 中国科学院长春光学精密机械与物理研究所 | Method for controlling thickness of optical remote sensor space truss rod adhesive glue layer |
| CN105607216A (en) * | 2015-12-30 | 2016-05-25 | 中国科学院长春光学精密机械与物理研究所 | Large-size and high specific stiffness truss off-axis three-reflection optical system main support structure |
Non-Patent Citations (1)
| Title |
|---|
| 空间相机桁架杆接头结构研究;田富湘;《光机电信息》;20110831;第28卷(第8期);51-55 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109752903A (en) | 2019-05-14 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN109239887B (en) | Flexible supporting structure for large circular reflector of space optical remote sensor | |
| CN109633859B (en) | Large-caliber optical reflector with back flexible supporting structure | |
| US7179059B2 (en) | Blade for a wind turbine and a method of assembling laminated profiles for a blade | |
| CN112946852B (en) | Primary and secondary mirror system adjustment method | |
| CN102200623A (en) | Micro-stress assembly flexible supporting method of small-calibre micro-crystal glass material reflector | |
| CN107310821B (en) | Propellant storage tank skirt mounting structure and manufacturing method thereof | |
| CN103969788A (en) | Lateral flexible supporting structure of space optical remote sensor circulator reflector | |
| CN111650716B (en) | Surface-shaped high-stability reflector and assembling method thereof | |
| CN209311766U (en) | Large-caliber optical reflector with back flexible supporting structure | |
| CN109752903B (en) | Truss structure for remote sensing camera and assembling method thereof | |
| CN109263057B (en) | A kind of bonding and assembly method of precision carbon fiber truss | |
| CN111650717B (en) | Surface-shaped high-stability reflector assembly and assembling method thereof | |
| CN206133099U (en) | Large-diameter camera reflector mounting structure | |
| CN111352209A (en) | Support structure of large-caliber reflector component of space remote sensor | |
| CN218848420U (en) | Lightweight space optical lens | |
| CN114843747A (en) | Metal and composite material ultralow temperature resistant waterproof conformal radome and preparation method thereof | |
| CN112965324B (en) | Carbon fiber truss body assembling and adjusting device and process based on gluing error compensation | |
| CN109273862B (en) | Carbon fiber parabolic antenna and focusing assembly method thereof | |
| CN109739064B (en) | Embedded truss and diaphragm integrated structure of space remote sensing camera | |
| CN219650364U (en) | Integrated forming die for composite material ribbed shading cylinder | |
| CN112612098A (en) | Optical element assembling assembly and assembling method thereof | |
| CN111580242A (en) | High-precision reference prism device for field work | |
| RU2257600C1 (en) | Mounting and method of fixing of optical elements in mounting | |
| CN110247154A (en) | A kind of assembly positioning device and method for antenna subreflector support rod | |
| CN114326013B (en) | Primary mirror assembly for tilt measurement camera |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |