CN114750986A - Scanning driving device for wireless transmission of satellite load power and signal - Google Patents
Scanning driving device for wireless transmission of satellite load power and signal Download PDFInfo
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- CN114750986A CN114750986A CN202210476072.8A CN202210476072A CN114750986A CN 114750986 A CN114750986 A CN 114750986A CN 202210476072 A CN202210476072 A CN 202210476072A CN 114750986 A CN114750986 A CN 114750986A
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- 230000005540 biological transmission Effects 0.000 title claims abstract description 91
- 230000017525 heat dissipation Effects 0.000 claims abstract description 14
- 230000008054 signal transmission Effects 0.000 claims description 30
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- 239000003990 capacitor Substances 0.000 claims description 4
- 230000007246 mechanism Effects 0.000 abstract description 13
- 238000005299 abrasion Methods 0.000 abstract description 4
- 239000008358 core component Substances 0.000 description 2
- 230000008878 coupling Effects 0.000 description 2
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- 238000005859 coupling reaction Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000004519 grease Substances 0.000 description 2
- 229920001296 polysiloxane Polymers 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 239000000306 component Substances 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
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- 239000000314 lubricant Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 230000008092 positive effect Effects 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 238000005057 refrigeration Methods 0.000 description 1
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B64—AIRCRAFT; AVIATION; COSMONAUTICS
- B64G—COSMONAUTICS; VEHICLES OR EQUIPMENT THEREFOR
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- H—ELECTRICITY
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- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K7/00—Constructional details common to different types of electric apparatus
- H05K7/20—Modifications to facilitate cooling, ventilating, or heating
- H05K7/2039—Modifications to facilitate cooling, ventilating, or heating characterised by the heat transfer by conduction from the heat generating element to a dissipating body
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K7/00—Constructional details common to different types of electric apparatus
- H05K7/20—Modifications to facilitate cooling, ventilating, or heating
- H05K7/2039—Modifications to facilitate cooling, ventilating, or heating characterised by the heat transfer by conduction from the heat generating element to a dissipating body
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Abstract
The invention discloses a scanning driving device for wireless transmission of satellite load power and signals, which is characterized in that a rotary supporting module, a driving module, a power and signal wireless transmission module and a heat dissipation module are arranged; the driving module drives the rotating part of the rotary supporting module to rotate, and the rotating part drives the rotating structure of the power signal wireless transmission module to rotate; the fixed part of the rotary support module is connected with the fixed structure of the power signal wireless transmission module; the speed and position feedback module is arranged to detect the rotating speed and the angle of the rotating structure, the whole structure is compact in design, a power and signal wireless transmission mode is adopted, mechanical abrasion of the slip ring is eliminated, and the service life and the reliability of the driving mechanism in an on-orbit mode are improved.
Description
Technical Field
The invention belongs to the technical field of space driving mechanisms, and particularly relates to a scanning driving device for wireless transmission of satellite load power and signals.
Background
The satellite load scanning driving mechanism is a core component of a satellite load pointing mechanism and is a basis for completing motion output, moment output, angle feedback and state maintenance of the load pointing mechanism.
With the research and exploration of the space in China and the development of military (civil) satellite career, the demand of the pointing mechanism is developed towards diversification, wherein the demand of high reliability, long service life and high precision is particularly outstanding, and correspondingly, the driving component serving as the core component of the pointing mechanism is also developed towards high reliability, long service life and high precision.
At present, a satellite load scanning driving mechanism mainly adopts a contact type conductive slip ring to transmit power and signals of a rotating part and a fixed part, physical contact exists, and friction causes abrasion of a contact point along with increase of rotation times, so that an open circuit phenomenon occurs, the satellite load scanning driving mechanism finally fails, and the on-orbit service life of an effective load of a spacecraft is shortened.
Disclosure of Invention
The invention aims to provide a scanning driving device for wireless transmission of satellite load power and signals, and solves the problem that the service life of the conventional satellite load scanning driving mechanism is short.
In order to solve the problems, the technical scheme of the invention is as follows:
the invention relates to a scanning driving device for wireless transmission of satellite load power and signals, which comprises:
a rotary support module including a fixed part and a rotary part rotatably connected to each other, the fixed part being for mounting to an external fixed bracket;
The driving module is connected with the rotating part and is used for driving the rotating end of the rotary supporting module to rotate;
the power and signal wireless transmission module comprises a fixed structure and a rotating structure which are mutually and rotatably connected, and electric signal transmission and power transmission are carried out between the fixed structure and the rotating structure; the rotating structure is connected with the rotating part, and the fixed structure is connected with the fixed part;
and the speed and position feedback module is arranged on the rotary support module and used for detecting the rotating speed and the angle position of the rotating structure.
The scanning driving device for the satellite load power and signal wireless transmission comprises a heat dissipation module, wherein the heat dissipation module is connected with the fixed structure and used for dissipating heat of a power transmission part of the power and signal wireless transmission module.
The invention relates to a scanning driving device for wireless transmission of satellite load power and signals.A rotary supporting module comprises a shell, an output flange, a bearing part and a rotary main shaft;
a first opening and a second opening are respectively arranged at two ends of the shell, and a rotary accommodating area and a power and signal wireless transmission area which are communicated are arranged in the shell;
The fixed end of the bearing part is connected to the shell, and the rotating end of the bearing part extends into the rotation accommodating area;
the rotating main shaft is fixedly connected to the rotating end of the bearing portion, a first end of the rotating main shaft extends out of the first opening and is connected with the output flange, and a second end of the rotating main shaft is connected with the rotating structure.
The invention relates to a scanning driving device for wireless transmission of satellite load power and signals.A bearing part comprises an upper end cover plate, a first outer bushing, a second outer bushing, a first bearing, a second bearing, a first shaft shoulder, a second shaft shoulder, a first locking nut and a sealing ring outer ring;
the inner ring of the first bearing is sleeved on one side, close to the output flange, of the rotating main shaft; the inner ring of the second bearing is sleeved on one side, far away from the output flange, of the rotating main shaft;
the first end of the first outer bushing is fixed on the shell, and the second end of the first outer bushing is abutted to one side, away from the output flange, of the outer ring of the first bearing;
the upper end cover plate is sleeved on the output flange and fixed on the first outer bushing, and the upper end cover plate is movably sealed on the output flange;
The first shaft shoulder is sleeved on the rotating main shaft, and two ends of the first shaft shoulder are respectively abutted to the output flange and one side, close to the output flange, of the inner ring of the first bearing;
the first end of the second outer bushing is fixed on the inner wall surface of the slewing accommodating area, and the second end of the second outer bushing is abutted to one side, close to the output flange, of the outer ring of the second bearing; (ii) a
The second shaft shoulder is sleeved on the rotating main shaft, and the first end of the second shaft shoulder is abutted to one side, away from the output flange, of the inner ring of the second bearing;
the first locking nut is in threaded connection with the rotating main shaft and abuts against the second end of the second shoulder;
and the outer ring of the sealing ring is fixed on the second outer lining, and the outer ring of the sealing ring is in dynamic sealing connection with the second shaft shoulder.
The invention relates to a scanning driving device for wireless transmission of satellite load power and signals.A driving module comprises a motor stator, a motor rotor, a connecting key and a second locking nut; a corresponding first annular bulge is arranged on the rotating main shaft;
the motor stator is fixed on the inner wall surface of the rotary accommodating area;
The motor rotor is connected to the rotating spindle through the connecting key, and a first end of the motor rotor abuts against the first annular bulge;
the second lock nut is in threaded connection with the rotating spindle, and the second lock nut abuts against the second end of the motor rotor.
According to the scanning driving device for the wireless transmission of the satellite load power and the signal, the power and signal wireless transmission module comprises the fixed structure, the rotating structure, a signal transmission part and a power transmission part;
the fixed structure is a hollow shaft, and the rotating structure is a rotating shell;
the rotating shell is positioned in the power and signal wireless transmission area, and a first end of the rotating shell is connected with a second end of the rotating spindle;
the hollow shaft penetrates through the second end of the rotating shell and extends into the inner cavity of the rotating shell;
the fixed end of the signal transmission part is arranged on the outer wall surface of the hollow shaft, and the rotating end of the signal transmission part is arranged on the inner cavity wall surface of the rotating shell and is used for transmitting electric signals;
the fixed end of the power transmission part is arranged on the outer wall surface of the hollow shaft, and the rotating end of the signal transmission part is arranged on the inner cavity wall surface of the rotating shell and used for power transmission.
According to the scanning driving device for wireless transmission of satellite load power and signals, the fixed end and the output end of the signal transmission part are respectively a capacitor electrode arranged on the rotating shell and a hollow shaft;
the stiff end and the output of power transmission part are respectively for locating rotatory shell with magnetic core on the hollow shaft, around there being the litz wire on the magnetic core.
According to the scanning driving device for wireless transmission of satellite load power and signals, a plurality of radiating fins are arranged at the positions of the rotating shell corresponding to the power transmission part.
The scanning driving device for wireless transmission of satellite load power and signals further comprises a third bearing, a fourth bearing and a third shaft shoulder;
a second annular bulge is arranged on the outer wall surface of the hollow shaft, and one side, deviating from the output flange, of the fixed end of the signal transmission part is abutted to the second annular bulge;
the inner ring of the third bearing is sleeved on the hollow shaft, and one side of the inner ring of the third bearing, which is far away from the output flange, is abutted to one side, which is close to the output flange, of the fixed end of the signal transmission part through the third shaft shoulder; one side, close to the output flange, of an outer ring of the third bearing is abutted to the wall surface of an inner cavity of the rotary shell;
The inner ring of the fourth bearing is sleeved on the hollow shaft, and one side, close to the output flange, of the inner ring of the fourth bearing is abutted to the second annular bulge; and one side of the outer ring of the fourth bearing, which deviates from the output flange, is abutted to the wall surface of the inner cavity of the rotary shell.
The invention relates to a scanning driving device for wireless transmission of satellite load power and signals.A speed position feedback module comprises a grating disc and a reading head;
the grating disc is fixed at the connecting position of the rotating structure and the rotating part;
the reading head is fixed on the fixed part and used for reading the grating disk.
Due to the adoption of the technical scheme, compared with the prior art, the invention has the following advantages and positive effects:
1. in one embodiment of the invention, a rotary support module, a driving module, a power and signal wireless transmission module and a heat dissipation module are arranged; the driving module drives the rotating part of the rotary supporting module to rotate, and the rotating part drives the rotating structure of the power signal wireless transmission module to rotate; the fixed part of the rotary support module is connected with the fixed structure of the power signal wireless transmission module; the speed and position feedback module is arranged to detect the rotating speed and the angle of the rotating structure, the whole structure is compact in design, a power and signal wireless transmission mode is adopted, mechanical abrasion of the slip ring is eliminated, and the service life and the reliability of the driving mechanism in an on-orbit mode are improved.
2. The power and signal wireless transmission module is thermally designed, and the outward turning type is adopted by the power and signal wireless transmission module, so that the power and signal wireless transmission module can dissipate heat; the rotary shell is provided with radiating fins, so that the radiating area is increased; a heat dissipation module is arranged in the hollow shaft fixing part and used for heat dissipation of the shaft system.
Drawings
FIG. 1 is a cross-sectional view of a scanning driving device for wireless transmission of satellite loading power and signals according to the present invention;
FIG. 2 is a schematic diagram of a scanning driving device for wireless transmission of satellite loading power and signals according to the present invention;
fig. 3 is a schematic diagram of a power and signal wireless transmission module of a scanning driving device for satellite loading power and signal wireless transmission according to the present invention.
Description of the reference numerals: 1: a rotation support module; 1-1: a housing; 1-2: an output flange; 1-3: an upper end cover plate; 1-4: a first outer liner; 1-5: rotating the main shaft; 1-6: a second bearing; 1-7: a second shoulder; 1-8: a first lock nut; 1-9: an outer ring of the seal ring; 2: a drive module; 2-1: a motor stator; 2-2: a motor rotor; 2-3: a connecting bond; 2-4: a second lock nut; 3: a speed position feedback module; 3-1: a grating disk; 3-2: a reading head; 3-3: a reading head fixing bracket; 4: a power and signal wireless transmission module; 4-1: a hollow shaft; 4-2: rotating the housing; 4-3: a signal transmission section; 4-4: a power transmission section; 4-5: a third bearing; 4-6: a third shoulder; 5: a coupling; 6: a heat dissipation module; 6-1: a loop heat pipe; 6-2: and fixing the clamp.
Detailed Description
The present invention provides a scanning driving device for wireless transmission of satellite loading power and signal, which is further described in detail with reference to the accompanying drawings and specific embodiments. Advantages and features of the present invention will become apparent from the following description and from the claims.
Referring to fig. 1 to 3, in an embodiment, a scanning driving apparatus for wireless transmission of satellite loading power and signals includes a rotation supporting module 1, a driving module 2, a wireless power and signal transmission module 4, and a velocity and position feedback module 3.
The pivoting support module 1 comprises a fixed part and a rotating part which are rotatably connected to each other, the fixed part being intended to be mounted to an external fixed support. The driving module 2 is connected with the rotating part and is used for driving the rotating end of the rotary supporting module 1 to rotate.
The power and signal wireless transmission module 4 comprises a fixed structure and a rotating structure which are mutually rotatably connected, and electric signal transmission and power transmission are carried out between the fixed structure and the rotating structure. Wherein, the rotating structure is connected with the rotating part, and the fixed structure is connected with the fixed part.
The speed and position feedback module 3 is arranged on the rotary support module 1 and used for detecting the rotating speed and the angular position of the rotating structure.
The embodiment is provided with a rotary supporting module 1, a driving module 2, a power and signal wireless transmission module 4 and a heat dissipation module 6. The driving module 2 drives the rotating part of the rotary supporting module 1 to rotate, and the rotating part drives the rotating structure of the power signal wireless transmission module 4 to rotate. The fixed part of the rotary support module 1 is connected with the fixed structure of the power signal wireless transmission module 4. The speed position feedback module 3 is arranged to detect the rotating speed and the angle of the rotating structure, the whole structure is compact in design, a power and signal wireless transmission mode is adopted, mechanical abrasion of a sliding ring is eliminated, and the service life and the reliability of the driving mechanism in an on-orbit mode are improved.
Meanwhile, the scanning driving mechanism for satellite load power and signal wireless transmission has good universality, is also suitable for other satellite loads of the same type, and reduces the research and development cost.
The following further describes a specific structure of the scanning driving device for wireless transmission of satellite loading power and signal in this embodiment:
in the present embodiment, the above-mentioned rotary support module 1 includes a housing 1-1, an output flange 1-2, a bearing portion, and a rotary spindle 1-5. The two ends of the shell 1-1 are respectively provided with a first opening and a second opening, and a rotary accommodating area and a power and signal wireless transmission area which are communicated are arranged in the shell 1-1.
The fixed end of the bearing part is connected with the shell 1-1, and the rotating end of the bearing part extends into the rotary accommodating area. The rotating main shaft 1-5 is fixedly connected to the rotating end of the bearing portion, a first end of the rotating main shaft 1-5 extends out of the first opening and is connected with the output flange 1-2, and a second end of the rotating main shaft 1-5 is connected with the rotating structure.
Specifically, the bearing portion may include an upper end cover plate 1-3, a first outer bushing 1-4, a second outer bushing, a first bearing, a second bearing 1-6, a first shoulder, a second shoulder 1-7, a first lock nut 1-8, and a seal ring outer race 1-9.
Wherein, the inner ring of the first bearing is sleeved on one side of the rotating main shaft 1-5 close to the output flange 1-2. The inner ring of the second bearing 1-6 is sleeved on one side, far away from the output flange 1-2, of the rotating main shaft 1-5. I.e. two bearings are located on either side of the rotating spindles 1-5.
The first end of the first outer bushing 1-4 is fixed on the housing 1-1, and the second end of the first outer bushing 1-4 abuts against one side of the outer ring of the first bearing, which is far away from the output flange 1-2. The first shaft shoulder is sleeved on the rotating main shaft 1-5, and two ends of the first shaft shoulder are respectively abutted to the output flange 1-2 and one side, close to the output flange 1-2, of the inner ring of the first bearing. Namely, the first bearing is positioned by the first shaft shoulder and the first outer bushing 1-4 arranged at both sides.
The upper end cover plate 1-3 is sleeved on the output flange 1-2 and fixed on the first outer liner 1-4, the upper end cover plate 1-3 is movably sealed on the output flange 1-2, namely the upper end cover plate 1-3 is matched with the first outer liner 1-4 to complete the sealing of the first opening.
The first end of the second outer bushing is fixed on the inner wall surface of the rotation accommodating area, and the second end of the second outer bushing is abutted to one side, close to the output flange 1-2, of the outer ring of the second bearing 1-6. The second shaft shoulder 1-7 is sleeved on the rotating main shaft 1-5, and the first end of the second shaft shoulder 1-7 is abutted to one side, away from the output flange 1-2, of the inner ring of the second bearing 1-6. Namely, the second bearing 1-6 is positioned by the second outer bushing and the second shoulder 1-7 arranged at both sides.
The first lock nut 1-8 is threaded to the rotating spindle 1-5 and the first lock nut 1-8 abuts to the second end of the second shoulder 1-7.
And the outer ring 1-9 of the sealing ring is fixed on the second outer bushing, and the outer ring 1-9 of the sealing ring is in dynamic sealing connection with the second shaft shoulder 1-7. Specifically, a labyrinth design can be arranged between the outer ring 1-9 of the sealing ring and the second shoulder 1-7, so that the bearing lubricant is prevented from volatilizing to influence the electrical property of the power and signal transmission module 4.
Further, the first bearing and the second bearing 1-6 can be a pair of angular contact bearings, and the pretightening force of the angular contact bearings can be adjusted by the first locking nut 1-8 through the screwing amount.
In this embodiment, the driving module 2 may include a motor stator 2-1, a motor rotor 2-2, a coupling key 2-3, and a second lock nut 2-4. The rotating main shaft 1-5 is provided with a corresponding first annular bulge.
The motor stator 2-1 is fixed on the inner wall surface of the rotary accommodating area. The motor rotor 2-2 is connected with the rotating main shaft 1-5 through a connecting key 2-3, and the first end of the motor rotor 2-2 is abutted against the first annular bulge.
The second lock nut 2-4 is screwed to the rotating spindle 1-5 and the second lock nut 2-4 abuts to the second end of the motor rotor 2-2. That is, the motor rotor 2-2 is axially fixed with the rotating main shaft 1-5 through the first annular bulges at two sides and the second locking nuts 2-4, and the motor rotor 2-2 and the rotating main shaft 1-5 rotate coaxially through key connection.
In this embodiment, the wireless power and signal transmission module 4 may specifically include a fixed structure, a rotating structure, a signal transmission portion 4-3 and a power transmission portion 4-4. Wherein, the fixed structure is a hollow shaft 4-1, and the rotating structure is a rotating shell 4-2.
The rotating shell 4-2 is located in a power and signal wireless transmission area, and a first end of the rotating shell 4-2 is connected with a second end of the rotating spindle 1-5 through a coupler 5, namely the rotating spindle 1-5 drives the rotating shell 4-2 to rotate.
The rotary housing 4-2 can be divided into four parts connected in sequence: the bearing comprises an upper end cover, a signal transmission shell, a bearing outer bushing and a power transmission shell.
The hollow shaft 4-1 passes through the second end of the rotating housing 4-2 and extends into the interior cavity of the rotating housing 4-2.
The fixed end of the signal transmission part 4-3 is arranged on the outer wall surface of the hollow shaft 4-1, and the rotating end of the signal transmission part 4-3 is arranged on the inner cavity wall surface of the signal transmission shell and is used for carrying out electric signal transmission. The fixed end of the power transmission part 4-4 is arranged on the outer wall surface of the hollow shaft 4-1, and the rotating end of the signal transmission part 4-3 is arranged on the inner cavity wall surface of the power transmission shell and is used for power transmission.
Specifically, the fixed end and the output end of the signal transmission portion 4-3 may be capacitance electrodes provided on the rotary case 4-2 and the hollow shaft 4-1, respectively.
The fixed end and the output end of the power transmission part 4-4 can be respectively a magnetic core arranged on the rotating shell 4-2 and the hollow shaft 4-1, and litz wires are wound on the magnetic core.
Further, the outer side of the power transmission housing may be provided with a plurality of heat dissipation fins to increase the heat radiation area. The power transmission housing may also employ a black anodized thermal control coating having an emissivity greater than 0.88.
Further, the power and signal wireless transmission module 4 may further include a third bearing 4-5, a fourth bearing, and a third shoulder 4-6.
The outer wall surface of the hollow shaft 4-1 is provided with a second annular bulge, and one side of the capacitor electrode arranged on the hollow shaft 4-1 departing from the output flange 1-2 is abutted to the second annular bulge.
The inner ring of the third bearing 4-5 is sleeved on the hollow shaft 4-1, and one side of the inner ring of the third bearing 4-5, which is far away from the output flange 1-2, is abutted to one side, which is close to the output flange 1-2, of the capacitor electrode arranged on the hollow shaft 4-1 through a third shaft shoulder 4-6. One side of the outer ring of the third bearing 4-5, which is close to the output flange 1-2, is abutted to the inner cavity wall surface of the rotary shell 4-2. Wherein the third shoulder 4-6 is used for axial positioning of the third bearing 4-5 and may be labyrinth designed to achieve sealing.
The inner ring of the fourth bearing is sleeved on the hollow shaft 4-1, and one side of the inner ring of the fourth bearing, which is close to the output flange 1-2, is abutted to the second annular bulge. One side of the outer ring of the fourth bearing, which is far away from the output flange 1-2, is abutted to the inner cavity wall surface of the rotary shell 4-2.
Namely, the rotary shell 4-2 is rotationally connected with the hollow shaft 4-1 through a third bearing 4-5 and a fourth bearing, wherein the third bearing 4-5 and the fourth bearing can be a pair of deep groove ball bearings.
In this embodiment, the speed and position feedback module 3 may specifically include a grating disk 3-1, a reading head 3-2, and a reading head fixing support 3-3.
The grating disc 3-1 is fixed on the coupler 5. The reading head fixing support 3-3 is fixed on the second outer bushing, and the reading head 3-2 is fixed on the reading head fixing support 3-3 and used for reading the grating disc 3-1.
In this embodiment, the scanning driving device for wireless transmission of satellite load power and signals may further include a heat dissipation module 6 connected to the hollow shaft 4-1 for dissipating heat of the power transmission portion 4-4.
Specifically, the heat dissipation module 6 may include a loop heat pipe 6-1, a fixing clip 6-2, a heat conductive silicone grease, and the like.
The inner wall surface of the hollow shaft 4-1 is provided with a groove for arranging a lead and a loop heat pipe 6-1, the fixing clamp 6-2 is used for fixing the loop heat pipe 6-1 on the inner wall surface of the hollow shaft 4-1, and the joint of the loop heat pipe 6-1 and the hollow shaft 4-1 is coated with heat-conducting silicone grease. The power wireless transmission part generates a large amount of heat energy due to magnetic core loss and coil copper loss, so that the heat is transmitted to the backflow cabin by the loop heat pipe 6-1 for refrigeration.
The power and signal wireless transmission module 4 of the present embodiment is thermally designed, and the power and signal wireless transmission module 4 is designed to adopt an outward turning type, so that the power and signal wireless transmission module 4 can dissipate heat; wherein the rotary shell 4-2 is provided with radiating fins to increase the radiating area; a loop heat pipe 6-1 is distributed in the hollow shaft 4-1 and used for shaft system heat dissipation.
The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the above embodiments. Even if various changes are made to the present invention, it is still within the scope of the present invention if they fall within the scope of the claims of the present invention and their equivalents.
Claims (10)
1. A scanning driving device for wireless transmission of satellite load power and signals is characterized by comprising:
a rotary support module including a fixed part and a rotary part rotatably connected to each other, the fixed part being for mounting to an external fixed bracket;
the driving module is connected with the rotating part and used for driving the rotating end of the rotary supporting module to rotate;
the power and signal wireless transmission module comprises a fixed structure and a rotating structure which are mutually and rotatably connected, and electric signal transmission and power transmission are carried out between the fixed structure and the rotating structure; the rotating structure is connected with the rotating part, and the fixed structure is connected with the fixed part;
and the speed and position feedback module is arranged on the rotary support module and used for detecting the rotating speed and the angle position of the rotating structure.
2. The apparatus as claimed in claim 1, further comprising a heat dissipation module connected to the fixed structure for dissipating heat from the power transmission portion of the wireless power and signal transmission module.
3. The scanning driving device for wireless transmission of satellite load power and signals according to claim 1, wherein the slewing support module comprises a housing, an output flange, a bearing part and a rotating main shaft;
a first opening and a second opening are respectively arranged at two ends of the shell, and a rotary accommodating area and a power and signal wireless transmission area which are communicated with each other are arranged in the shell;
the fixed end of the bearing part is connected to the shell, and the rotating end of the bearing part extends into the rotation accommodating area;
the rotating main shaft is fixedly connected to the rotating end of the bearing portion, a first end of the rotating main shaft extends out of the first opening and is connected with the output flange, and a second end of the rotating main shaft is connected with the rotating structure.
4. The scanning driving device for wireless transmission of satellite load power and signal according to claim 3, wherein said bearing portion comprises an upper end cover plate, a first outer bushing, a second outer bushing, a first bearing, a second bearing, a first shoulder, a second shoulder, a first locking nut and a sealing ring outer ring;
The inner ring of the first bearing is sleeved on one side, close to the output flange, of the rotating main shaft; the inner ring of the second bearing is sleeved on one side, far away from the output flange, of the rotating main shaft;
the first end of the first outer bushing is fixed on the shell, and the second end of the first outer bushing abuts against one side, away from the output flange, of the outer ring of the first bearing;
the upper end cover plate is sleeved on the output flange and fixed on the first outer bushing, and the upper end cover plate is movably sealed on the output flange;
the first shaft shoulder is sleeved on the rotating main shaft, and two ends of the first shaft shoulder are respectively abutted to the output flange and one side, close to the output flange, of the inner ring of the first bearing;
the first end of the second outer bushing is fixed on the inner wall surface of the slewing accommodating area, and the second end of the second outer bushing is abutted to one side, close to the output flange, of the outer ring of the second bearing; (ii) a
The second shaft shoulder is sleeved on the rotating main shaft, and the first end of the second shaft shoulder is abutted to one side, away from the output flange, of the inner ring of the second bearing;
the first locking nut is in threaded connection with the rotating main shaft and abuts against the second end of the second shoulder;
And the outer ring of the sealing ring is fixed on the second outer lining, and the outer ring of the sealing ring is in dynamic sealing connection with the second shaft shoulder.
5. The satellite load power and signal wireless transmission scanning driving device according to claim 3, wherein the driving module comprises a motor stator, a motor rotor, a connecting key and a second locking nut; the rotating main shaft is provided with a corresponding first annular bulge;
the motor stator is fixed on the inner wall surface of the rotary accommodating area;
the motor rotor is connected to the rotating main shaft through the connecting key, and the first end of the motor rotor abuts against the first annular bulge;
the second lock nut is in threaded connection with the rotating spindle and abuts against the second end of the motor rotor.
6. The satellite payload power and signal wireless transmission scan drive apparatus of claim 3, wherein the power and signal wireless transmission module comprises the fixed structure, the rotating structure, a signal transmission portion and a power transmission portion;
the fixed structure is a hollow shaft, and the rotating structure is a rotating shell;
the rotating shell is positioned in the power and signal wireless transmission area, and a first end of the rotating shell is connected with a second end of the rotating spindle;
The hollow shaft penetrates through the second end of the rotating shell and extends into the inner cavity of the rotating shell;
the fixed end of the signal transmission part is arranged on the outer wall surface of the hollow shaft, and the rotating end of the signal transmission part is arranged on the inner cavity wall surface of the rotating shell and is used for transmitting electric signals;
the fixed end of the power transmission part is arranged on the outer wall surface of the hollow shaft, and the rotating end of the signal transmission part is arranged on the inner cavity wall surface of the rotating shell and used for power transmission.
7. The scanning driving device for satellite loading power and signal wireless transmission according to claim 6, wherein the fixed end and the output end of the signal transmission portion are respectively a capacitor electrode disposed on the rotating housing and the hollow shaft;
the stiff end and the output of power transmission part are respectively for locating rotatory shell with magnetic core on the hollow shaft, around there being the litz wire on the magnetic core.
8. The scanning driving device for wireless transmission of satellite load power and signals as claimed in claim 6, wherein a plurality of heat dissipation fins are disposed at the positions of said rotating housing corresponding to said power transmission portion.
9. The scanning driving device for wireless transmission of satellite load power and signals according to claim 6, further comprising a third bearing, a fourth bearing and a third shoulder;
a second annular bulge is arranged on the outer wall surface of the hollow shaft, and one side, deviating from the output flange, of the fixed end of the signal transmission part is abutted to the second annular bulge;
the inner ring of the third bearing is sleeved on the hollow shaft, and one side of the inner ring of the third bearing, which is far away from the output flange, is abutted to one side, which is close to the output flange, of the fixed end of the signal transmission part through the third shaft shoulder; one side, close to the output flange, of an outer ring of the third bearing is abutted to the wall surface of an inner cavity of the rotary shell;
the inner ring of the fourth bearing is sleeved on the hollow shaft, and one side, close to the output flange, of the inner ring of the fourth bearing is abutted to the second annular bulge; and one side of the outer ring of the fourth bearing, which deviates from the output flange, is abutted to the wall surface of the inner cavity of the rotary shell.
10. The satellite payload power and signal wireless transmission scan drive of claim 1, wherein the velocity position feedback module comprises a grating disk, a reading head;
The grating disc is fixed at the connecting position of the rotating structure and the rotating part;
the reading head is fixed on the fixed part and used for reading the grating disk.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202210476072.8A CN114750986B (en) | 2022-04-29 | 2022-04-29 | Scanning driving device for satellite load power and signal wireless transmission |
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| CN202210476072.8A CN114750986B (en) | 2022-04-29 | 2022-04-29 | Scanning driving device for satellite load power and signal wireless transmission |
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| CN114750986B CN114750986B (en) | 2024-08-02 |
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| JPH11301600A (en) * | 1998-04-20 | 1999-11-02 | Toshiba Corp | Bolt release simulator |
| JP2003081200A (en) * | 2001-09-13 | 2003-03-19 | Mitsubishi Heavy Ind Ltd | Cooling system for micro-gravity rotating device |
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| CN114750986B (en) | 2024-08-02 |
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