CN108401575B - A kind of antenna direction regulating mechanism linear drive apparatus - Google Patents
A kind of antenna direction regulating mechanism linear drive apparatus Download PDFInfo
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- CN108401575B CN108401575B CN200910122506.9A CN200910122506A CN108401575B CN 108401575 B CN108401575 B CN 108401575B CN 200910122506 A CN200910122506 A CN 200910122506A CN 108401575 B CN108401575 B CN 108401575B
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- nut
- screw
- shaft
- speed reducer
- harmonic speed
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Abstract
The components such as a kind of antenna direction regulating mechanism linear drive apparatus, including stepper motor, harmonic speed reducer, shaft, crosshead shoe, leading screw, nut, nut overcoat, limitation screw, compressed spring, shell.The wave producer of stepper motor output shaft and harmonic speed reducer connects, the steel wheel of harmonic speed reducer and driving device cage connection, output flexbile gear is connect with shaft, shaft is connect with leading screw by crosshead shoe again, nut cooperatively forms nut screw transmission with leading screw, compressed spring is installed on nut, limitation screw is located at the centre position of the bar-shaped trough of nut overcoat.Linear drive apparatus designed by the present invention has self-lock ability, improves the functional reliability of antenna directing mechanism.
Description
Technical field
The present invention relates to a kind of antenna direction regulating mechanism linear drive apparatus, belong to satellite antenna mechanism skill
Art field.
Background technology
High-precision antenna direction regulating mechanism is for realizing the in-orbit one kind for being directed toward adjustment function of satellite antenna
Space mechanism, three axis and two pieces of connecting plates that it is mainly laid out by rectangular triangle are (on being defined as
Plate and lower plate) composition, as shown in Figure 1, upper plate 101 is connect with antenna, lower plate 102 is connected with satellite
The mounting plate connect, there are two being drive shaft 104 in three axis, length can change, another axis is solid
Dead axle 103, consistent length.As shown in Fig. 2, the operation principle of direction regulating mechanism is exactly to pass through change
The length of two drive shafts makes the angle between mechanism upper and lower plates change, to realize what antenna was directed toward
Adjustment.
The drive shaft of antenna direction regulating mechanism is substantially a linear drive apparatus, passes through controller control
It makes it and generates axial stretching motion to make the length of drive shaft change.Due to the direction essence of antenna
It spends more demanding, it requires that linear drive apparatus must also have very high precision；Secondly, straight line drives
Dynamic device must be able to withstand the load of launching phase, i.e., is not broken because of the oscillating load of launching phase
It is bad also not move along a straight line because of the oscillating load of launching phase.The day of Moog companies of U.S. production
Line direction regulating mechanism, three axis that overall structure is laid out by rectangular triangle and a set of independent
Locking releasing device forms, and two of which drive shaft is also two sets of identical linear drive apparatus, but this
Linear drive apparatus does not have self-locking property, antenna direction regulating mechanism that need to be locked by locking releasing device
Tightly, entire direction regulating mechanism structure and the course of work are complicated, and reliability is low.
Invention content
The technology of the present invention solves the problems, such as：Overcome the deficiencies of the prior art and provide a kind of high-precision,
Antenna direction regulating mechanism linear drive apparatus with self-locking property, improves the reliable operation of mechanism
Property.
Technical solution of the invention is：A kind of antenna direction regulating mechanism linear drive apparatus, including
Stepper motor, harmonic speed reducer, shaft, crosshead shoe, leading screw, nut, compressed spring, nut
Housing, limitation screw, shell and spring bumper cover, stepper motor are installed on the shell, harmonic reduction
The wave producer of device wave and the output axis connection of stepper motor, steel wheel and the shell of harmonic speed reducer are fixed
Connection, the output flexbile gear of harmonic speed reducer are fixedly connected with shaft, and shaft is mounted on by shaft bearing
In shell, leading screw is connect by crosshead shoe with shaft, and nut cooperatively forms nut screw pair with leading screw,
Nut overcoat is sleeved on the outside of nut and is connected with shell, and silk is equipped between leading screw and nut overcoat
Thick stick bearing, limitation screw are mounted on the cylindrical surface of nut lower end, and the head of screw for limiting screw is located at spiral shell
For limiting rotation of the nut in nut overcoat in the elongated slot of female housing, one is installed in the top of nut
A compressed spring, compressed spring are limited in by spring bumper cover in nut overcoat.
The harmonic speed reducer is short cartridge type harmonic speed reducer, and the nut screw pair is trapezoidal thread.
Compared with the prior art, the present invention has the following advantages：The compressed spring of the present invention is mounted on nut
The idle running gap of nut screw auxiliary driving can be eliminated between spring bumper cover and increases driving device
The resistance of transmission ensure that the precision of driving device；Crosshead shoe is used for connecting shaft and leading screw, has
The coaxiality deviation of effect eliminated between stepper motor output shaft and leading screw, ensure that the suitable of mechanism driving
Smooth property, resistance is excessive or stuck caused by coaxiality error when solving the problems, such as to be driven between the two；It is humorous
Wave retarder has reverse self-locking ability, considerably increases the holding torque of nut screw pair front end, makes
Driving device is provided with very strong self-locking property and resistance to shock, and nut screw pair has trapezoidal thread,
Having latching characteristics can make driving device have self-locking function.The linear drive apparatus energy that the present invention designs
The structure and the course of work for effectively simplifying antenna direction regulating mechanism substantially increase antenna and are directed toward adjustment
The functional reliability of mechanism.
Description of the drawings
Fig. 1 is antenna direction regulating mechanism outline drawing；
Fig. 2 is antenna direction regulating mechanism operation principle schematic diagram；
Fig. 3 is the stereochemical structure composition figure of linear drive apparatus of the present invention；
Fig. 4 is the planar structure composition figure of linear drive apparatus of the present invention；
Fig. 5 is the composite structural diagram of harmonic speed reducer of the present invention；
Fig. 6 is structural schematic diagram when linear drive apparatus of the present invention is in zero-bit；
Fig. 7 is structural schematic diagram when linear drive apparatus of the present invention is in work.
Specific implementation mode
Further detailed description is done to the present invention in the following with reference to the drawings and specific embodiments：
As shown in Fig. 3,4,5, entire linear drive apparatus is mainly by composite stepper motor 1, humorous
Wave retarder 2, shaft 3, crosshead shoe 4, leading screw 5, nut 6, compressed spring 7, outside nut
Set 8, limitation screw 9, leading screw bearing 10, bearing cover 11, shell 12, shaft bearing 13
And spring bumper cover 14 forms, stepper motor 1 is mounted on by a flange on shell 12, harmonic wave
The wave producer 20 of retarder wave 2 is humorous by the output axis connection of an axle sleeve and stepper motor 1
The steel wheel 22 of wave retarder is connected firmly with shell 12 by screw, the output flexbile gear of harmonic speed reducer 2
23 are connected firmly with shaft 3 by screw, and it is harmonic speed reducer axis to export between flexbile gear 23 and steel wheel 22
21 are held, shaft bearing 13, shaft 3 and a stainless steel are installed between shaft 3 and shell 12
Leading screw 5 is connected by crosshead shoe 4, is cooperatively formed in the tin bronze nut 6 and leading screw 5 of piston-like
Screw pair is equipped with leading screw bearing 10 between leading screw 5 and nut overcoat 8, leading screw bearing 10 is by axis
It holds cover board 11 to be fixed, limitation screw 9 is mounted on the cylindrical surface of 6 lower end of nut, spiral shell
Ailhead, which is located in the elongated slot of nut overcoat 8, limits rotation of the nut 6 in nut overcoat 8, while
One compressed spring 7 is installed between nut 6 and spring bumper cover 14.
Compressed spring 7 is designed to the spring of small rigidity, is mounted between nut 6 and spring bumper cover 14
The idle running gap of nut screw auxiliary driving can be eliminated and increase the resistance of driving device transmission, protected
The precision of driving device is demonstrate,proved.Crosshead shoe 4 is used for connecting shaft 3 and leading screw 5, effectively eliminates
Coaxiality deviation between 1 output shaft of stepper motor and leading screw 5, ensure that the smoothness of mechanism driving.
Harmonic speed reducer 2 selects short cartridge type harmonic speed reducer, has reverse self-locking ability, considerably increases spiral shell
The holding torque of master screw pair front end, makes driving device be provided with very strong self-locking property and vibration resistance
Energy.There is nut screw pair trapezoidal thread, the trapezoidal thread there is latching characteristics driving device can be made to have
There is self-locking function.
A drive shaft of the linear drive apparatus as antenna directing mechanism, linear drive apparatus it is outer
Shell 12 and the lower plate of antenna directing mechanism are bolted, and the nut 6 of linear drive apparatus upper end is logical
Ball-joint 15 is crossed to connect with upper plate 16.As shown in figure 5, when antenna direction regulating mechanism is in zero-bit,
Upper plate 16 is parallel with lower plate, and the limitation screw 9 of linear drive apparatus is located at the bar-shaped trough of nut overcoat 8
Centre position, launching phase is by the latching characteristics of driving device come the zero-bit of holding mechanism.
As shown in fig. 6, when antenna direction regulating mechanism needs work, stepping electricity is controlled by controller
Machine 1 rotates, and the rotation of stepper motor 1 drives the wave producer of harmonic speed reducer 2 to rotate, harmonic wave
Retarder 2 is rotated after rotary motion is slowed down by exporting flexbile gear drive shaft 3, since shaft 3 passes through
Crosshead shoe 4 is connect with leading screw 5, and shaft 3 drives leading screw 5 to rotate again, and nut 6 is matched with leading screw 5
It closes, and limits the rotary motion of nut 6 by stop screw 9, so the rotary motion of leading screw 5
It is eventually converted into the axial linear movement of nut 6, compressed spring 7 is used for eliminating nut screw auxiliary driving
Idle running gap.When nut 6 moves upwards, upper plate 16 is pushed to be rotated counterclockwise centainly around ball-joint 15
Angle [alpha], to realize antenna be directed toward adjustment；When nut 6 moves downward, pull upper plate 16 around
Ball-joint 15 rotates clockwise certain angle-α, realizes that antenna direction adjusts in the opposite direction.
The non-detailed description of the present invention is known to the skilled person technology.
Claims (3)
1. a kind of antenna direction regulating mechanism linear drive apparatus, it is characterised in that including：Stepper motor
(1), harmonic speed reducer (2), shaft (3), crosshead shoe (4), leading screw (5), spiral shell
Female (6), compressed spring (7), nut overcoat (8), limitation screw (9), shell (12)
And spring bumper cover (14), stepper motor (1) are mounted on shell (12), harmonic speed reducer
The output axis connection of the wave producer (20) and stepper motor (1) of wave (2), harmonic speed reducer
Steel wheel (22) is fixedly connected with shell (12), the output flexbile gear (23) of harmonic speed reducer (2)
It is fixedly connected with shaft (3), shaft (3) is mounted on shell (12) by shaft bearing (13)
Interior, leading screw (5) is connect by crosshead shoe (4) with shaft (3), nut (6) and leading screw (5)
Cooperatively form nut screw pair, nut overcoat (8) be sleeved on the outside of nut (6) and with shell (12)
It is connected, leading screw bearing (10) is installed between leading screw (5) and nut overcoat (8), limits spiral shell
It follows closely (9) to be mounted on the cylindrical surface of nut (6) lower end, the head of screw of limitation screw (9) is located at
For limiting rotation of the nut (6) in nut overcoat (8) in the elongated slot of nut overcoat (8),
One compressed spring (7) is installed in the top of nut (6), compressed spring (7) passes through spring cup
Plate (14) is limited in nut overcoat (6).
2. a kind of antenna direction regulating mechanism linear drive apparatus described in accordance with the claim 1, special
Sign is：The harmonic speed reducer (2) is short cartridge type harmonic speed reducer.
3. a kind of antenna direction regulating mechanism linear drive apparatus described in accordance with the claim 1, special
Sign is：The nut screw pair is trapezoidal thread.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910122506.9A CN108401575B (en) | 2009-09-10 | 2009-09-10 | A kind of antenna direction regulating mechanism linear drive apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910122506.9A CN108401575B (en) | 2009-09-10 | 2009-09-10 | A kind of antenna direction regulating mechanism linear drive apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108401575B true CN108401575B (en) | 2013-02-27 |
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ID=63078645
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200910122506.9A Active CN108401575B (en) | 2009-09-10 | 2009-09-10 | A kind of antenna direction regulating mechanism linear drive apparatus |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108401575B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109681602A (en) * | 2019-01-16 | 2019-04-26 | 南京信息工程大学 | A kind of harmonic speed changer with linear motion function |
-
2009
- 2009-09-10 CN CN200910122506.9A patent/CN108401575B/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109681602A (en) * | 2019-01-16 | 2019-04-26 | 南京信息工程大学 | A kind of harmonic speed changer with linear motion function |
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| GR03 | Grant of secret patent right | ||
| GRSP | Grant of secret patent right | ||
| DC01 | Secret patent status has been lifted | ||
| DC01 | Secret patent status has been lifted |