CN201980426U - Secondary structure for bias momentum wheel of satellite - Google Patents
Secondary structure for bias momentum wheel of satellite Download PDFInfo
- Publication number
- CN201980426U CN201980426U CN2011200281844U CN201120028184U CN201980426U CN 201980426 U CN201980426 U CN 201980426U CN 2011200281844 U CN2011200281844 U CN 2011200281844U CN 201120028184 U CN201120028184 U CN 201120028184U CN 201980426 U CN201980426 U CN 201980426U
- Authority
- CN
- China
- Prior art keywords
- momentum wheel
- aggregated
- particle
- backboard
- satellite
- 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.)
- Expired - Lifetime
Links
Images
Abstract
The utility model relates to a secondary structure for a bias momentum wheel of a satellite, which comprises a main board, a backboard and a bottom board, wherein the main board and the backboard form a trapezoidal structure together, and the lower side of the trapezoidal structure is integrally connected with the bottom board; and a reinforced rib is arranged at a joint of the the trapezoidal structure and the bottom board. Two square mounting surfaces taking the upper side of a trapezoid as a side length are respectively reserved at the two sides of the upper half part of the trapezoidal structure, and through holes and connecting holes which are used for installing the momentum wheel are arranged at the centers of the mounting surfaces; and the lower half part of the trapezoidal structure and the middle of the bottom board are hollowed out by wire-cutting, and connecting holes for installing a satellite structural board are arranged around the bottom board. The secondary structure adopts an aluminum alloy LY12CZ material, and the main board and the backboard are combined to be more in line with a real force transfer path of the secondary structure. The problem that the vibratory response is too large brought by lower fundamental frequency in the traditional secondary structure of the bias momentum wheel is solved on the premise of not reducing the height of the center of mass of the bias momentum wheel, not increasing the quality of the secondary structure, and not increasing the space occupation rate of the secondary structure.
Description
Technical field
The utility model relates to a kind of mounting structure of satellite bias momentum wheel.
Background technology
Bias momentum wheel on the satellite all is connected with the satellite structure plate by aggregated(particle) structure at present, and Fig. 1 has provided the profile and the connection mode of a typical small satellite bias momentum wheel aggregated(particle) structure.As shown in Figure 1, this kind aggregated(particle) structure is an aluminum veneer rack form, and six roots of sensation diagonal bar is used to strengthen this aggregated(particle) structure rigidity behind the plate.The aggregated(particle) structure bottom is connected with the satellite structure plate by φ 4.5mm mounting hole, and the top is connected with the bias momentum wheel by the connecting bore of 4 φ 8.5mm, opens 4 lightening holes on the veneer to reduce the aggregated(particle) structure quality.The weak point of this support is at the bottom of poor mechanical property, poor rigidity, the fundamental frequency.Utilizing the fundamental frequency of this aggregated(particle) structure of finite element analysis (band momentum wheel) is 94HZ.Under the harsh mechanical condition of rocket launching, this supporting structure can produce bigger response, makes the response in launch environment of bias momentum wheel excessive, causes momentum wheel inner loosening, hinders in the rail task executions, is unsuitable for the further application of small satellite.
The utility model content
Technology of the present utility model is dealt with problems and is: overcome the deficiencies in the prior art, provide that a kind of rigidity is big, volume is little, lightweight bias momentum wheel aggregated(particle) structure, solved the big problem of existing aggregated(particle) structure LF-response, improved reliability, the safety of aggregated(particle) structure under harsh mechanical environments such as rocket launching, for the bias momentum wheel provides good guarantee in the realization of rail function.
Technical solution of the present utility model is: satellite bias momentum wheel aggregated(particle) structure, comprise mainboard, backboard and base plate, and mainboard and backboard constitute trapezium structure jointly, and the bottom of trapezium structure is connected with base plate is integrated, and the junction is provided with reinforced rib; It is the square attachment face of the length of side that the first half both sides of described trapezium structure are left with trapezoidal top, and the center of described attachment face is provided with through hole and the connecting bore that is used to install momentum wheel; Hollow out is cut by line in the latter half of described trapezium structure and the middle part of base plate, is provided with the connecting bore that is used for the installation of satellite structure plate around the described base plate.
Described mainboard is vertical with base plate, and the angle of described backboard and base plate is 78.8 degree.Described mainboard and back plate thickness are 6mm.The material of described mainboard, backboard and base plate is aluminum alloy LY12CZ.
The utility model advantage compared with prior art is:
(1) the utility model aggregated(particle) structure adopts eutergum combining form, meets the real Path of Force Transfer of aggregated(particle) structure more, the aggregated(particle) structure fundamental frequency can be brought up to 179HZ by original 94HZ.Wherein, the result of finite element analysis is fundamental frequency 176HZ, and the fundamental frequency of actual vibration test is 179HZ.Do not reduce bias momentum wheel height of center of mass, do not increasing the aggregated(particle) structure quality, do not enlarging under the prerequisite of aggregated(particle) structure space hold rate, solving the excessive problem of the fundamental frequency vibratory response that brings on the low side that existing bias momentum wheel aggregated(particle) structure exists always;
(2) the utility model aggregated(particle) structure easier realization in processing.Existing aggregated(particle) structure is that flange adds the reinforced rib form, reinforced rib and flange processing difficulties, and the material that takes out in the course of processing can't utilize again.The utility model aggregated(particle) structure does not have flange and reinforced rib, directly Milling Process moulding, and the material between eutergum can be removed by the line cutting, and the material of removal can also be used as other purposes, simplifies work flow on the whole, cuts down finished cost;
(3) quality of existing bias momentum wheel support is 1.1Kg, and the utility model aggregated(particle) structure can reduce 0.1Kg with quality on this basis;
(4) resource existing aggregated(particle) structure in space is few on the shared star of the utility model aggregated(particle) structure, can adapt to small satellite compactness, practical developing direction better.
Description of drawings
Fig. 1 is existing a kind of bias momentum round construction profile scheme drawing;
Fig. 2 is the utility model bias momentum round construction profile scheme drawing;
Fig. 3 is the utility model bias momentum wheel aggregated(particle) structure scheme of installation;
Y was to feature level trial curve figure when Fig. 4 was the utility model bias momentum round structural vibration test;
Y was to checking and accepting level trial curve figure at random when Fig. 5 was the utility model bias momentum round structural vibration test.
The specific embodiment
The utility model bias momentum wheel aggregated(particle) structure has adopted the finite element topological optimization technology to analyze the main Path of Force Transfer that obtains in the aggregated(particle) structure design space under the condition of design space that limits and load.According to main Path of Force Transfer direction, consider that simultaneously the processing mode of support, quality design.
According to the Path of Force Transfer direction, the mainboard that the utility model aggregated(particle) structure has been abandoned existing support adds and tiltedly draws the reinforced rib form, and adopts main supporting plate to add anticline plate form.As shown in Figure 2, the material of the utility model aggregated(particle) structure is aluminum alloy LY12CZ, and its basic profile is that main supporting plate adds anticline plate form, and mainboard and backboard constitute trapezium structure jointly, and the bottom of trapezium structure is connected with base plate is integrated, and the junction is provided with reinforced rib.It is the square attachment face of the length of side that the first half both sides of trapezium structure are left with trapezoidal top, and the center of attachment face is provided with through hole and the connecting bore that is used to install momentum wheel.Hollow out is cut by line in the latter half of trapezium structure and the middle part of base plate, is provided with the connecting bore that is used for the installation of satellite structure plate around the base plate.Mainboard and back plate thickness are 6mm, and mainboard is vertical with base plate, and the angle of backboard and base plate is 78.8 degree, and positive thus side is the triangle rock-steady structure.As shown in Figure 3, the momentum wheel that this time mechanism need carry is a cylinder mechanism, and quality is 7.3Kg.The connecting bore of four the φ 8.5mm in aggregated(particle) structure top is and the connecting bore of momentum wheel, links to each other by 4 M8 screws when being connected with momentum wheel.The connecting bore of four the φ 8.5mm in aggregated(particle) structure top is and the connecting bore of momentum wheel, links to each other by four each M8 screws when being connected with momentum wheel.The connecting bore of 10 the φ 5.5mm in aggregated(particle) structure bottom is and the connecting bore of satellite structure plate, links to each other by 10 M4 screws when being connected with structural slab.Height of center of mass after momentum wheel is installed is 162mm.Vibration during rocket launching passes to aggregated(particle) structure by the connecting bore with the satellite structure plate, and passes to momentum wheel by the connecting bore with momentum wheel.The connecting interface of existing aggregated(particle) structure and structural slab is the through hole of two row φ 4.5mm before and after base plate has only.The utility model is under total connecting bore unmodified situation, and wherein two holes move to time both sides, the narrow limit of mechanism, makes being connected of itself and structural slab more firm.
The utility model aggregated(particle) structure is carried out the finite element topological optimization, and the main Path of Force Transfer that can obtain time mechanism mainly concentrates on fore-and-aft direction, and middle material improves contribution not quite to the fundamental frequency of whole mechanism.Simultaneously, the material that a top of the trellis is two jiaos is removed, but big with the density of material of momentum wheel junction, has substantially all obtained reservation.Contrast with analysis result behind the topological optimization and existing aggregated(particle) structure, though the mainboard of existing time mechanism plays the effect of main force transmission mechanism, but do not consider the vital function of backboard power transmission, though back side diagonal bar can play the power transmission effect, effect is obviously effective not as backboard.
The utility model bottom is provided with lightening hole, can pass through the Milling Process moulding, and mainboard and backboard cut hollow out by line.The aggregated(particle) structure top still is connected with the bias momentum wheel by the connecting bore of 4 φ 8.5mm, new design increases the quantity of material of mounting hole periphery, be to be solid construction around the mounting hole, do not offer any lightening hole, guaranteed the maximization of mounting hole periphery material recoverable amount, the support load has also effectively been transmitted in this measure, has improved the rigidity of support.The lightening hole of aggregated(particle) structure is opened at this structure base plate middle body, and front and back mainboard and backboard are no longer opened lightening hole in order to avoid block main Path of Force Transfer.
Adopt finite element technique that newly-designed aggregated(particle) structure is carried out the fundamental frequency analysis, obtaining its fundamental frequency is 176.25Hz, and the 94Hz of more former mechanism has improved 82Hz.Far exceed the fundamental frequency of satellite, can not produce coupling with the vibration of satellite.The utility model has also carried out vibration test, and the Y direction in the vibration test is the principal modi of vibration direction, and as shown in Figure 4, the fundamental frequency that its feature level test obtains is 179Hz, and both when oscillation frequency reached 179Hz, first formant appearred in aggregated(particle) structure.As shown in Figure 5, it is 178Hz that examination level at random obtains fundamental frequency, and promptly when the random vibration frequency reached 178Hz, first formant appearred in aggregated(particle) structure.Analyze, the basically identical as a result of test, can think that the utility model performance compares time mechanism bigger improvement has been arranged.
The content that is not described in detail in the utility model specification sheets belongs to those skilled in the art's known technology.
Claims (4)
1. the satellite bias momentum is taken turns aggregated(particle) structure, it is characterized in that comprising: mainboard, backboard and base plate, and mainboard and backboard constitute trapezium structure jointly, and the bottom of trapezium structure is connected with base plate is integrated, and the junction is provided with reinforced rib; It is the square attachment face of the length of side that the first half both sides of described trapezium structure are left with trapezoidal top, and the center of described attachment face is provided with through hole and the connecting bore that is used to install momentum wheel; Hollow out is cut by line in the latter half of described trapezium structure and the middle part of base plate, is provided with the connecting bore that is used for the installation of satellite structure plate around the described base plate.
2. satellite bias momentum wheel aggregated(particle) structure according to claim 1, it is characterized in that: described mainboard is vertical with base plate, and the angle of described backboard and base plate is 78.8 degree.
3. satellite bias momentum wheel aggregated(particle) structure according to claim 1, it is characterized in that: described mainboard and back plate thickness are 6mm.
4. satellite bias momentum wheel aggregated(particle) structure according to claim 1, it is characterized in that: the material of described mainboard, backboard and base plate is aluminum alloy LY12CZ.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200281844U CN201980426U (en) | 2011-01-27 | 2011-01-27 | Secondary structure for bias momentum wheel of satellite |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200281844U CN201980426U (en) | 2011-01-27 | 2011-01-27 | Secondary structure for bias momentum wheel of satellite |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201980426U true CN201980426U (en) | 2011-09-21 |
Family
ID=44607890
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011200281844U Expired - Lifetime CN201980426U (en) | 2011-01-27 | 2011-01-27 | Secondary structure for bias momentum wheel of satellite |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201980426U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102720801A (en) * | 2012-06-19 | 2012-10-10 | 上海卫星工程研究所 | Novel flywheel support structure for spacecraft |
| CN108502210A (en) * | 2018-06-19 | 2018-09-07 | 上海微小卫星工程中心 | A kind of multi-functional momentum wheel support |
| CN111022559A (en) * | 2019-11-29 | 2020-04-17 | 北京宇航系统工程研究所 | Extensible damping type self-adaptation instrument mounting platform |
| CN112572839A (en) * | 2020-12-08 | 2021-03-30 | 长光卫星技术有限公司 | Momentum wheel combined bracket for batch processing |
-
2011
- 2011-01-27 CN CN2011200281844U patent/CN201980426U/en not_active Expired - Lifetime
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102720801A (en) * | 2012-06-19 | 2012-10-10 | 上海卫星工程研究所 | Novel flywheel support structure for spacecraft |
| CN102720801B (en) * | 2012-06-19 | 2015-03-04 | 上海卫星工程研究所 | Novel flywheel support structure for spacecraft |
| CN108502210A (en) * | 2018-06-19 | 2018-09-07 | 上海微小卫星工程中心 | A kind of multi-functional momentum wheel support |
| CN111022559A (en) * | 2019-11-29 | 2020-04-17 | 北京宇航系统工程研究所 | Extensible damping type self-adaptation instrument mounting platform |
| CN111022559B (en) * | 2019-11-29 | 2021-10-01 | 北京宇航系统工程研究所 | Extensible damping type self-adaptation instrument mounting platform |
| CN112572839A (en) * | 2020-12-08 | 2021-03-30 | 长光卫星技术有限公司 | Momentum wheel combined bracket for batch processing |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN201980426U (en) | Secondary structure for bias momentum wheel of satellite | |
| CN103899004B (en) | One is energy consumer stage by stage | |
| CN202120956U (en) | Connection structure of frame of solar assembly | |
| CN205157148U (en) | Test device can be assessd to super large fan blade fatigue performance | |
| CN103352957B (en) | Vertical-type plate rack vibration isolation base | |
| CN208830135U (en) | A kind of bridge prefabrication plate stitch connection structure | |
| CN202518458U (en) | Stiffened wallboard fatigue test transition section | |
| CN203361452U (en) | Composite insulation concrete block | |
| CN202368786U (en) | Trailing edge rudder adapting to complex force/thermal environment | |
| CN201366410Y (en) | Big power ultrasonic transducer | |
| CN204109127U (en) | Water tank die crossed by pre-fabricated electric cables ditch | |
| CN201584837U (en) | Motor mounting rack | |
| CN208235936U (en) | A kind of reinforced U350 aluminum alloy pattern plate | |
| CN201973413U (en) | Installation support of engine | |
| CN208294632U (en) | A kind of automobile preprocessor mounting structure | |
| CN205248386U (en) | Lithium ion battery module with high structural strength | |
| CN205981607U (en) | Do not influence frock clamp of vibration amount level | |
| CN210379773U (en) | Flexible and stable distribution board frame structure | |
| CN209385931U (en) | A kind of diesel-driven generator is stable to place assembling stand | |
| CN206993527U (en) | A kind of riveted electronic box support beam | |
| CN215442860U (en) | Solid wood board connecting mechanism with deformation resistance function | |
| CN209457372U (en) | A kind of architectural engineering plane template | |
| CN203111188U (en) | Light rail seat framework | |
| CN203719756U (en) | Double shear beam type weighing sensor | |
| CN211543874U (en) | Flap rocker arm suspension device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20110921 |
|
| CX01 | Expiry of patent term |