CN109018458B - Four-dimensional turntable - Google Patents
Four-dimensional turntable Download PDFInfo
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- CN109018458B CN109018458B CN201811011540.4A CN201811011540A CN109018458B CN 109018458 B CN109018458 B CN 109018458B CN 201811011540 A CN201811011540 A CN 201811011540A CN 109018458 B CN109018458 B CN 109018458B
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- 230000007246 mechanism Effects 0.000 claims abstract description 23
- 238000006073 displacement reaction Methods 0.000 claims description 3
- 238000001514 detection method Methods 0.000 abstract description 4
- 238000012360 testing method Methods 0.000 description 4
- 230000009471 action Effects 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000004088 simulation Methods 0.000 description 2
- 230000008859 change Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
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- 239000002245 particle Substances 0.000 description 1
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- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B64—AIRCRAFT; AVIATION; COSMONAUTICS
- B64G—COSMONAUTICS; VEHICLES OR EQUIPMENT THEREFOR
- B64G7/00—Simulating cosmonautic conditions, e.g. for conditioning crews
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Abstract
The invention provides a four-dimensional turntable, which comprises a load disc, a support, a slide carriage and a base, wherein the load disc, the support, the slide carriage and the base are sequentially arranged from top to bottom; the slide carriage is slidably arranged on the base, and can realize linear movement in the horizontal direction through a horizontal pushing mechanism arranged on the base; the slide carriage is provided with a supporting frame, a supporting seat is slidably arranged in the vertical direction of the supporting frame, and the supporting seat realizes linear movement through a vertical pushing mechanism arranged on the supporting frame; the support seat is provided with a pitching shaft in a rotating manner in the horizontal direction, and the support seat is fixedly arranged on the pitching shaft; the bearing is rotatably installed in the vertical direction of the support, and the top of the bearing is fixedly installed at the center of the load disc. The four-dimensional turntable is provided with the position and angle adjusting function of four degrees of freedom by adding two translational degrees of freedom, namely vertical and horizontal degrees of freedom, on the basis of two degrees of freedom of the existing two-dimensional turntable, and the universality of the calibration and detection functions of the turntable is improved.
Description
Technical Field
The invention belongs to the field of spacecraft ground tests, and particularly relates to a four-dimensional turntable.
Background
With the rapid development of aerospace industry in China, the spacecraft has higher and higher requirements on vacuum ring-mode tests. The on-orbit running environment of the spacecraft is different from the ground environment, the on-orbit environment is a vacuum high-low temperature environment, in order to improve the transmission success rate, the performance of the spacecraft in the vacuum high-low temperature environment is verified, the reliability of the spacecraft is improved, the spacecraft is subjected to multiple ring-mode tests in the vacuum environment in the ground test process before the transmission, and the faults caused by the fact that the spacecraft cannot adapt to the on-orbit severe environment are eliminated. Along with the continuous improvement of the precision requirement of the spacecraft, the precision of the vacuum turntable is required to be higher, and the turntable can realize high-precision movement and positioning in a vacuum high-low temperature environment.
The on-orbit environment of the spacecraft is a high-vacuum and high-low-temperature alternating environment, and the common vacuum turntable can be normally used in the environment, but has the following problems:
at present, the degree of freedom of the vacuum turntable is two-dimensionally increased by an azimuth axis and a pitching axis, the two-dimensional turntable can simulate the posture adjustment function of a reference product in a vacuum environment, the calibration detection function of particle beams is realized, the relative positions of a target and a tested piece depend on the initial installation position of the turntable, and the initial installation positions of different tested piece turntables are required to be readjusted, so that the universality is poor.
Disclosure of Invention
In view of the above, the invention aims to provide a four-dimensional turntable so as to realize the universal performance of the turntable on spacecraft detection.
In order to achieve the above purpose, the technical scheme of the invention is realized as follows:
a four-dimensional turntable comprises a load disc, a support, a slide carriage and a base which are sequentially arranged from top to bottom;
the slide carriage is slidably arranged on the base, and can realize linear movement in the horizontal direction through a horizontal pushing mechanism arranged on the base;
the slide carriage is provided with a supporting frame, a supporting seat is slidably arranged in the vertical direction of the supporting frame, and the supporting seat realizes linear movement through a vertical pushing mechanism arranged on the supporting frame;
the support seat is horizontally provided with a pitching shaft in a rotating mode, the pitching shaft is driven by a pitching shaft motor, and the support seat is fixedly arranged on the pitching shaft; the bearing is rotatably provided with an azimuth shaft in the vertical direction, the azimuth shaft is driven by an azimuth shaft motor, and the top of the azimuth shaft is fixedly arranged at the center of the load disc.
Further, the base is provided with a first sensor for detecting the moving distance of the slide carriage, the supporting frame is provided with a second sensor for detecting the moving distance of the supporting seat, the supporting seat is provided with a third sensor for detecting the rotating angle of the pitching shaft, and the support is provided with a fourth sensor for detecting the rotating angle of the azimuth shaft.
Further, the first sensor, the second sensor, the third sensor and the fourth sensor are grating scale displacement sensors respectively.
Further, the horizontal pushing mechanism and the vertical pushing mechanism are respectively of ball screw structures.
Furthermore, the pitching shaft and the azimuth shaft are respectively of hollow shaft structures.
Further, the support is of a U-shaped frame structure, and the pitching shaft is arranged on a side plate of the U-shaped frame.
Compared with the prior art, the four-dimensional turntable has the following advantages:
the four-dimensional turntable is simple in structure, a load disc for bearing a spacecraft is arranged on a supporting seat through an azimuth axis and a pitching axis, the supporting seat is slidably arranged on a supporting frame through a vertical pushing mechanism, the supporting frame is slidably arranged on a base through a horizontal pushing mechanism, two translational degrees of freedom are added on the basis of two degrees of freedom of the existing two-dimensional turntable, the turntable is enabled to have the position and angle adjusting functions of four degrees of freedom, and the universality of the calibration and detection functions of the turntable is improved.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention and do not constitute an undue limitation on the invention. In the drawings:
FIG. 1 is a front view of a four-dimensional turret according to an illustrative embodiment of the invention;
FIG. 2 is a left side view of a four-dimensional turret according to an illustrative embodiment of the invention;
fig. 3 is a four-dimensional turntable application state diagram according to an embodiment of the present invention.
Reference numerals illustrate:
1-a base; 2-horizontal pushing servo motor; 3-a first sensor; 4-azimuth axis; 5-fourth sensor; 6-azimuth axis motor; 7-supporting seats; 8-a second sensor; 9-a horizontal direction pushing mechanism and 10-a slide carriage; 11-a support frame; 12-a third sensor; 13-pitch axis motor; 14-pitch axis; 15-load tray; 16-vacuum simulation bin; 17-a control cabinet; 18-a vertical direction pushing mechanism; 19-a supporting seat.
Detailed Description
It should be noted that, without conflict, the embodiments of the present invention and features of the embodiments may be combined with each other.
In the description of the invention, it should be understood that the terms "center," "longitudinal," "transverse," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like indicate orientations or positional relationships that are based on the orientation or positional relationships shown in the drawings, merely to facilitate describing the invention and simplify the description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be configured and operate in a particular orientation, and therefore should not be construed as limiting the invention. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first", "a second", etc. may explicitly or implicitly include one or more such feature. In the description of the invention, unless otherwise indicated, the meaning of "a plurality" is two or more.
In the description of the invention, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the creation of the present invention can be understood by those of ordinary skill in the art in a specific case.
The invention will be described in detail below with reference to the drawings in connection with embodiments.
As shown in fig. 1 and 2, the four-dimensional turntable comprises a load disc 15, a support 7, a slide carriage 10 and a base 1 which are sequentially arranged from top to bottom; the slide carriage 10 is slidably arranged on the base 1, and realizes linear movement in the horizontal direction through a horizontal direction pushing mechanism 9 arranged on the base 1; the slide carriage 10 is provided with a supporting frame 11, in this embodiment, the supporting frame 11 includes four upright posts vertically arranged on the slide carriage, the four upright posts are arranged in a square shape, the tops of the four upright posts are fixedly connected through a connecting frame, so as to ensure the stability of the supporting frame 11, the supporting frame 11 is provided with two supporting seats 19 in a sliding manner in the vertical direction, in this embodiment, in order to ensure the stability of the support 7 during pitching, the supporting seats 19 are arranged in total, and are respectively positioned at the left side and the right side of the supporting frame 11, the two supporting seats 19 are opposite to each other, the left side and the right side of the supporting frame 11 are respectively provided with a vertical direction pushing mechanism 18, and the two supporting seats 19 respectively realize the linear movement in the vertical direction through the vertical direction pushing mechanisms 18 at the corresponding sides; each supporting seat 19 is provided with a pitching shaft 14 in a rotating manner in the horizontal direction, the two pitching shafts 14 are coaxially arranged, the pitching shafts 14 are driven by a pitching shaft motor 13, the supporting seat 7 is arranged between the two pitching shafts 14, the supporting seat 7 and the two pitching shafts 14 are fixedly connected respectively, and the pitching shafts 14 rotate to drive the supporting seat 7 to coaxially rotate so as to realize the pitching angle change of the supporting seat 7; the bearing 7 is rotatably arranged in the vertical direction, the bearing 4 is driven by the bearing motor 6, the top of the bearing 4 is fixedly arranged at the center of the load disc 15, the bearing 4 drives the load disc 15 to rotate around the center, the bearing 7 drives the load disc 15 to synchronously rotate, so that the pitching angle of the load disc 15 changes, meanwhile, the bearing 7 can move in the vertical direction under the action of the vertical pushing mechanism 18 along with the supporting seat 19, and the supporting seat 19 is arranged on the slide carriage 10, so that the supporting seat can linearly move in the horizontal direction along with the slide carriage 10 under the action of the horizontal linear pushing mechanism 9, and the load disc 15 can horizontally, vertically, pitching and rotate around the center of the load disc 15 in a comprehensive manner, so that the load disc 15 has four degrees of freedom. In specific implementation, the four-dimensional turntable is arranged in a vacuum simulation bin 16, a spacecraft is arranged on a load disc 15, and a control cabinet 17 is electrically connected with various electrical appliances such as a first sensor, a second sensor, a third sensor and a fourth sensor in the turntable, a horizontal driving motor 2 for driving a horizontal linear pushing mechanism 9, a servo motor for driving a vertical pushing mechanism 18, a pitching axis motor 13 and an azimuth axis motor 6, so that signal acquisition and control of the motors are realized.
In this embodiment, in order to detect a specific variation of the position of the load disc 15, the base 1 is provided with a first sensor 3 for detecting a horizontal linear movement distance of the slide carriage 10, the support frame 11 is provided with a second sensor 8 for detecting a vertical movement distance of the support seat 19, the support seat 19 is provided with a third sensor 12 for detecting a rotation angle of the pitch axis 14, and the support seat 7 is provided with a fourth sensor 5 for detecting a rotation angle of the azimuth axis 4; preferably, the first sensor 3, the second sensor 8, the third sensor 12 and the fourth sensor 5 are grating scale displacement sensors, respectively.
In this embodiment, the horizontal pushing mechanism 9 and the vertical pushing mechanism 18 are respectively ball screw structures.
In this embodiment, in order to reduce the weight of the entire device, the pitch axis 14 and the azimuth axis 4 are hollow shafts.
In this embodiment, the support 7 is a U-shaped frame structure, and includes a bottom plate and side plates respectively mounted on two sides of the bottom plate, the pitch axis 14 is mounted on the side plates of the U-shaped frame, and the azimuth axis 4 is fixedly connected with the bottom plate.
The above embodiments are merely preferred embodiments of the present invention and are not intended to limit the present invention, and any modifications, equivalent substitutions, improvements, etc. within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (5)
1. A four-dimensional turntable, characterized by:
comprises a load disc (15), a support (7), a slide carriage (10) and a base (1) which are sequentially arranged from top to bottom;
the slide carriage (10) is slidably arranged on the base (1), and can linearly move in the horizontal direction through a horizontal pushing mechanism (9) arranged on the base (1);
a supporting frame (11) is arranged on the slide carriage (10), a supporting seat (19) is arranged on the supporting frame (11) in a sliding manner in the vertical direction, and the supporting seat (19) realizes linear movement through a vertical pushing mechanism (18) arranged on the supporting frame;
the support seat (19) is provided with a pitching shaft (14) in a rotating mode in the horizontal direction, the pitching shaft (14) is driven by a pitching shaft motor (13), and the support seat (7) is fixedly arranged on the pitching shaft (14); an azimuth shaft (4) is rotatably arranged in the vertical direction of the support (7), the azimuth shaft (4) is driven by an azimuth shaft motor (6), and the top of the azimuth shaft (4) is fixedly arranged at the center of a load disc (15); the base (1) is provided with a first sensor (3) for detecting the moving distance of the slide carriage (10), the supporting frame (11) is provided with a second sensor (8) for detecting the moving distance of the supporting seat, the supporting seat (19) is provided with a third sensor (12) for detecting the rotating angle of the pitching shaft (14), and the supporting seat (7) is provided with a fourth sensor (5) for detecting the rotating angle of the azimuth shaft (4).
2. A four-dimensional turret according to claim 1, wherein:
the first sensor (3), the second sensor (8), the third sensor (12) and the fourth sensor (5) are grating scale displacement sensors respectively.
3. A four-dimensional turret according to claim 1, wherein:
the horizontal pushing mechanism (9) and the vertical pushing mechanism (18) are respectively of ball screw structures.
4. A four-dimensional turret according to claim 1, wherein:
the pitching shaft (14) and the azimuth shaft (4) are respectively of hollow shaft structures.
5. A four-dimensional turret according to claim 1, wherein:
the support (7) is of a U-shaped frame structure, and the pitching shaft (14) is arranged on a side plate of the U-shaped frame.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811011540.4A CN109018458B (en) | 2018-08-31 | 2018-08-31 | Four-dimensional turntable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811011540.4A CN109018458B (en) | 2018-08-31 | 2018-08-31 | Four-dimensional turntable |
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| Publication Number | Publication Date |
|---|---|
| CN109018458A CN109018458A (en) | 2018-12-18 |
| CN109018458B true CN109018458B (en) | 2024-04-12 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811011540.4A Active CN109018458B (en) | 2018-08-31 | 2018-08-31 | Four-dimensional turntable |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109739260A (en) * | 2019-01-12 | 2019-05-10 | 杨晓伟 | Optical target trace test platform |
| CN109975003B (en) * | 2019-04-30 | 2020-09-22 | 合肥工业大学 | Ground simulation test method and device for satellite tracking rotary table |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07159288A (en) * | 1993-12-08 | 1995-06-23 | Mitsubishi Electric Corp | Characteristic evaluation system for biaxial driving mechanism |
| CN202583331U (en) * | 2012-04-13 | 2012-12-05 | 河北威赛特科技有限公司 | Antenna comprehensive test revolving table |
| CN203241493U (en) * | 2013-04-28 | 2013-10-16 | 北京航天光华电子技术有限公司 | Simulation rotary table for satellite antenna of communications on the move |
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| CN107215487A (en) * | 2017-05-24 | 2017-09-29 | 北京空间技术研制试验中心 | A kind of manned spacecraft repairs ground simulation system out of my cabin |
| CN208731249U (en) * | 2018-08-31 | 2019-04-12 | 天津航天机电设备研究所 | A kind of four-dimension turntable |
-
2018
- 2018-08-31 CN CN201811011540.4A patent/CN109018458B/en active Active
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|---|---|---|---|---|
| JPH07159288A (en) * | 1993-12-08 | 1995-06-23 | Mitsubishi Electric Corp | Characteristic evaluation system for biaxial driving mechanism |
| CN202583331U (en) * | 2012-04-13 | 2012-12-05 | 河北威赛特科技有限公司 | Antenna comprehensive test revolving table |
| CN203241493U (en) * | 2013-04-28 | 2013-10-16 | 北京航天光华电子技术有限公司 | Simulation rotary table for satellite antenna of communications on the move |
| CN105083914A (en) * | 2015-07-21 | 2015-11-25 | 四川航天电液控制有限公司 | Posture monitoring system for scraper conveyer |
| CN105334070A (en) * | 2015-11-26 | 2016-02-17 | 上海新跃仪表厂 | Vehicle-mounted six-degree-of-freedom platform |
| CN106771388A (en) * | 2016-12-06 | 2017-05-31 | 中国航空工业集团公司北京长城航空测控技术研究所 | A kind of electromagnetic window is tested with eight axle turntables |
| CN107215487A (en) * | 2017-05-24 | 2017-09-29 | 北京空间技术研制试验中心 | A kind of manned spacecraft repairs ground simulation system out of my cabin |
| CN208731249U (en) * | 2018-08-31 | 2019-04-12 | 天津航天机电设备研究所 | A kind of four-dimension turntable |
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| Publication number | Publication date |
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| CN109018458A (en) | 2018-12-18 |
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