CN114476146B - Space on-orbit automatic balance adjusting mechanism and space on-orbit turntable assembly - Google Patents
Space on-orbit automatic balance adjusting mechanism and space on-orbit turntable assembly Download PDFInfo
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- CN114476146B CN114476146B CN202210155413.1A CN202210155413A CN114476146B CN 114476146 B CN114476146 B CN 114476146B CN 202210155413 A CN202210155413 A CN 202210155413A CN 114476146 B CN114476146 B CN 114476146B
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Abstract
The invention relates to a space on-orbit automatic balance adjusting mechanism and a space on-orbit turntable assembly, wherein the space on-orbit automatic balance adjusting mechanism comprises an annular guide rail and a balance block assembly, the balance block assembly comprises a balance moving part, a driving assembly and a junction box, the driving assembly is connected with the balance moving part, the junction box is connected with the driving assembly, and the balance moving part is arranged on the annular guide rail and can move along the annular guide rail under the driving of the driving assembly; the junction box is provided with a Hall sensor and controls the driving assembly to operate according to a limiting signal obtained by the Hall sensor. According to the space on-orbit automatic balance adjusting mechanism, the annular guide rail and the balance block assembly are arranged, the Hall sensor is arranged on the junction box, the operation of the driving assembly can be controlled according to the limiting signal obtained by the Hall sensor, and the driving assembly can be controlled to start and stop or to rotate forwards and backwards.
Description
Technical Field
The invention relates to the technical field of space on-orbit correlation, in particular to a space on-orbit automatic balance adjusting mechanism volume and a space on-orbit turntable assembly.
Background
In the space on-orbit environment, part of the rotating assemblies can cause the mass center of the assemblies to change due to self movement or load replacement, for example, the size envelope of the centrifuge is 900mm in diameter, so that the unbalance amount generated by the large-size fixed-axis rotating mechanism under different working conditions is not negligible to the stability of the operation of the centrifuge, the service life of the centrifuge and even the disturbance generated by the whole cabin section. In order to reduce the disturbance to the self and the space station, an on-orbit automatic balance adjusting mechanism needs to be designed.
Disclosure of Invention
The invention provides a space on-orbit automatic balance adjusting mechanism and a space on-orbit turntable assembly, aiming at solving one or more problems in the prior art.
The technical scheme for solving the technical problems is as follows: a space on-orbit automatic balance adjusting mechanism comprises an annular guide rail and a balance block assembly, wherein the balance block assembly comprises a balance moving part, a driving assembly and a junction box, the driving assembly is connected with the balance moving part, the junction box is connected with the driving assembly, and the balance moving part is arranged on the annular guide rail and can move along the annular guide rail under the driving of the driving assembly; the junction box is provided with a Hall sensor and controls the driving assembly to operate according to a limiting signal obtained by the Hall sensor.
The invention has the beneficial effects that: according to the space on-orbit automatic balance adjusting mechanism, the annular guide rail and the balance block assembly are arranged, the Hall sensor is arranged on the junction box, the operation of the driving assembly can be controlled according to the limiting signal obtained by the Hall sensor, and the driving assembly can be controlled to start and stop or to rotate forwards and backwards.
On the basis of the technical scheme, the invention can be further improved as follows.
Furthermore, the number of the Hall sensors is two, and the two Hall sensors are arranged at intervals along the radial direction of the annular guide rail.
The beneficial effect of adopting the further scheme is that: through setting up two hall sensor that radial interval arranged, mutual noninterference when obtaining spacing signal can realize that the starting point is spacing and the terminal point is spacing to the balancing piece subassembly.
Further, the number of the balance block assemblies is two, two mechanical limiting blocks are arranged on the bottom wall of each balance block assembly respectively and are located on the outer ring side of the ring-shaped guide rail, and the distance between one mechanical limiting block and the outer ring edge of the ring-shaped guide rail is larger than the distance between the other mechanical limiting block and the outer ring edge of the ring-shaped guide rail.
The beneficial effect of adopting the further scheme is that: through setting up two balancing block subassemblies, can effectively adjust rotary device's equilibrium volume.
Further, the driving assembly comprises a driving motor, a worm wheel, a worm and a driving gear, the driving motor is connected with the junction box, a gear ring is arranged on the annular guide rail, the driving motor is installed on the balanced motion piece, the worm wheel, the worm and the driving gear are all located on the inner side of the balanced motion piece, the worm wheel is connected to the balanced motion piece in a rotating mode, an output shaft of the driving motor is connected with the worm, the worm is meshed with the worm wheel, and the driving gear is coaxially connected with the worm wheel and meshed with the gear ring.
The beneficial effect of adopting the above further scheme is: by adopting the worm and gear driving mechanism, the driving assembly has compact structure, can realize the automatic driving operation of the balance moving part, and is beneficial to the stability of the balance quantity adjusting process.
Furthermore, two ends of the worm are respectively and rotatably installed on the inner side wall of the balance motion part through bearings;
the gear ring is located on the outer ring edge of the annular guide rail, the worm wheel and the driving gear are respectively located on the outer ring side of the annular guide rail, the driving motor is located on the inner ring side of the annular guide rail, and the worm is located above or below the annular guide rail.
The beneficial effect of adopting the further scheme is that: the driving assembly is matched with the balance block assembly, the structure is compact and stable, and the balance block assembly can run stably along the annular guide rail.
Further, the lubricating device also comprises a lubricating component which is arranged on the inner side of the balance moving part; the lubricating component comprises a lubricating seat and a lubricating block, the lubricating seat is fixed on the inner side wall of the balance moving part, and the lubricating block is connected to the lubricating seat and is in contact with the edge of the inner ring or the edge of the outer ring of the annular guide rail.
The beneficial effect of adopting the further scheme is that: through setting up lubricated subassembly, be favorable to the lubrication to ring rail, avoid balanced moving part to appear jamming etc. along ring rail operation.
Furthermore, the number of the lubricating assemblies is two, and lubricating blocks of the two lubricating assemblies are respectively contacted with the inner ring edge and the outer ring edge of the annular guide rail;
the lubricating block is elastically connected to the lubricating seat; the stick includes an oil impregnated polyimide.
The beneficial effect of adopting the further scheme is that: through setting up two lubricated subassemblies, can all lubricate ring rail's inner ring side and outer ring side. The lubricating block is elastically connected to the lubricating seat, so that the lubricating block can be tightly attached to the annular guide rail, and the surface of the annular guide rail can still be attached to the lubricating block when the lubricating block is abraded. The oil-impregnated polyimide is used as a lubricating piece, and the polyimide is used as a porous lubricating material, so that the risk of easy volatilization and pollution of lubricating oil caused by the lubrication of the traditional felt is avoided.
The utility model provides a space carousel subassembly on orbit, includes foretell space automatic balance adjustment mechanism on orbit, still includes the carousel, space automatic balance adjustment mechanism on orbit's annular guide rail fixed mounting be in on the side of going up of carousel, the side of going up of carousel be equipped with hall sensor corresponds the spacing magnet steel of arranging, works as balanced block subassembly moves to spacing magnet steel position, hall sensor with spacing magnet steel cooperation obtains spacing signal.
The invention has the beneficial effects that: according to the space on-orbit turntable assembly, the magnetic steel is arranged on the turntable, and when the balance block assembly moves to enable the Hall sensor to correspond to the limiting magnetic steel, the Hall sensor obtains a limiting signal.
Furthermore, the limiting magnetic steel comprises end point limiting magnetic steel and starting point limiting magnetic steel, and the end point limiting magnetic steel and the starting point limiting magnetic steel are respectively matched with the two Hall sensors on the rotary table in a one-to-one correspondence manner.
The beneficial effect of adopting the further scheme is that: the starting point position and the end point position of the motion of the balance block component can be limited by arranging the starting point limiting magnetic steel and the end point limiting magnetic steel.
Furthermore, the upper side surface of the rotary disc is provided with a starting point limiting column and an end point limiting column which are matched with a mechanical limiting block on the bottom wall of the balance block assembly, the starting point limiting magnetic steel and the end point limiting magnetic steel are located between the starting point limiting column and the end point limiting column, the starting point limiting magnetic steel is adjacent to the starting point limiting column and is arranged, and the end point limiting magnetic steel is adjacent to the end point limiting column.
The beneficial effect of adopting the further scheme is that: the starting point limiting magnetic steel and the end point limiting magnetic steel are arranged between the starting point limiting column and the end point limiting column, and in general, the mechanical limiting is ineffective as long as the limiting magnetic steel and the Hall sensor are used for sensing to perform soft limiting. When the soft limit fails, the mechanical limit can be performed by using the cooperation of the mechanical limit block and the limit column.
Drawings
FIG. 1 is a schematic perspective view of the spatial on-orbit automatic balance adjustment mechanism of the present invention;
FIG. 2 is a schematic bottom structure view of the spatial on-orbit automatic balance adjustment mechanism of the present invention;
FIG. 3 is an enlarged view of portion A of FIG. 2;
FIG. 4 is a schematic cross-sectional view of the structure of FIG. 3 according to the present invention;
FIG. 5 is a schematic view of the driving assembly of the present invention;
FIG. 6 is a schematic cross-sectional view of FIG. 5;
FIG. 7 is a schematic cross-sectional view E-E of FIG. 3 according to the present invention;
fig. 8 is a schematic structural view of the upper side of the turntable assembly of the present invention.
In the drawings, the components represented by the respective reference numerals are listed below:
1. an annular guide rail; 11. a ring gear; 12. an inner ring edge; 13. an outer ring edge;
2. a balance block assembly; 21. a balance moving member; 211. a cover plate; 212. a motion plate; 213. concentric wheels; 214. an eccentric wheel;
22. a junction box; 221. a Hall sensor; 222. a cable fixing hole;
23. a drive assembly; 231. a drive motor; 232. a worm gear; 233. a worm; 234. a drive gear; 235. a bearing; 2351. a bearing seat; 2352. a retainer ring for a bore; 2353. a coupling; 236. a bearing outer cover plate; 237. screwing down the screw; 238. a worm gear shaft; 239. screwing down the nut; 230. a retainer ring; 2301. a key;
24. a mechanical stop block; 25. a cable holder;
3. a lubrication assembly; 31. a lubrication seat; 32. a lubricating block; 33. a spring; 34. a card slot;
4. a turntable; 41. a first starting point limiting magnetic steel; 42. a first end point limiting magnetic steel; 43. second starting point limiting magnetic steel; 44. a second end point limiting magnetic steel; 45. a first starting point limiting column; 46. a first end point limiting column; 47. a second starting point limiting column; 48. a second end-limiting post.
Detailed Description
The principles and features of this invention are described below in conjunction with the following drawings, which are set forth by way of illustration only and are not intended to limit the scope of the invention.
Example 1
As shown in fig. 1 to 8, the space on-orbit automatic balance adjusting mechanism of the present embodiment includes an annular guide rail 1 and a counterweight assembly 2, where the counterweight assembly 2 includes a balance moving member 21, a driving assembly 23, and a junction box 22, the driving assembly 23 is connected to the balance moving member 21, the junction box 22 is connected to the driving assembly 23, and the balance moving member 21 is disposed on the annular guide rail 1 and can move along the annular guide rail 1 under the driving of the driving assembly 23; the junction box 22 is provided with a hall sensor 221, and the junction box 22 controls the driving component 23 to operate according to a limit signal obtained by the hall sensor 221.
The space on-orbit automatic balance adjusting mechanism of the embodiment can carry out operation control on the driving assembly according to a limit signal obtained by the hall sensor by arranging the annular guide rail and the balance block assembly and arranging the hall sensor on the junction box, for example, the driving assembly can be controlled to start and stop or to rotate positively and negatively.
In a preferable aspect of this embodiment, there are two hall sensors 221, and the two hall sensors 221 are arranged at intervals along the radial direction of the circular guide rail 1. Through setting up two hall sensor that radial interval arranged, mutual noninterference when obtaining spacing signal can realize that the starting point is spacing and the terminal point is spacing to the balancing piece subassembly.
As shown in fig. 1 and fig. 2, a preferable scheme of this embodiment is that two balance weight assemblies 2 are provided, mechanical limit blocks 24 are respectively disposed on bottom walls of the two balance weight assemblies 2, the two mechanical limit blocks 24 are both located at an outer ring side of the ring-shaped guide rail 1, and a distance between one mechanical limit block 24 and an outer ring edge of the ring-shaped guide rail 1 is greater than a distance between the other mechanical limit block 24 and the outer ring edge of the ring-shaped guide rail 1. The circumferences of the two mechanical limit blocks do not coincide. Through setting up two balancing block subassemblies, can effectively adjust rotary device's equilibrium volume.
As shown in fig. 3 and 4, in this embodiment, the driving assembly 23 includes a driving motor 231, a worm wheel 232, a worm 233 and a driving gear 234, the driving motor 231 is connected to the junction box 22, the ring rail 1 is provided with a gear ring 11, the driving motor 231 is mounted on the balance moving member 21, the worm wheel 232, the worm 233 and the driving gear 234 are all located inside the balance moving member 21, the worm wheel 232 is rotatably connected to the balance moving member 21, an output shaft of the driving motor 231 is connected to the worm 233, the worm 233 is meshed with the worm wheel 232, and the driving gear 234 is coaxially connected to the worm wheel 232 and meshed with the gear ring 11. By adopting the worm and gear driving mechanism, the driving assembly has compact structure, can realize the automatic driving operation of the balance moving part, and is beneficial to the stability of the balance quantity adjusting process.
Specifically, as shown in fig. 3 and 4, both ends of the worm 233 of the present embodiment are rotatably mounted on the inner side wall of the balance moving member 21 through bearings 235, respectively; the gear ring 11 is located on the outer ring edge 13 of the ring rail 1, the worm wheel 232 and the driving gear 234 are respectively located on the outer ring side of the ring rail 1, the driving motor 231 is located on the inner ring side of the ring rail 1, and the worm 233 is located above or below the ring rail 1. The driving assembly is matched with the balance block assembly, the structure is compact and stable, and the balance block assembly can run stably along the annular guide rail.
Specifically, as shown in fig. 5 and 6, the driving motor 231 and the worm 233 of the present embodiment are connected through a coupling 2353, a bearing seat 2351 and a hole retainer ring 2352 are respectively arranged on the two bearings 235, the bearings 235 of the present embodiment may be angular ball bearings, the two angular ball bearings are installed back to back on the counterweight assembly 2, the bearings 235 located on the inner ring side of the annular guide rail 1 are directly assembled on the worm 233 after being assembled, and the bearings 235 located on the outer ring side of the annular guide rail are also screwed and fixed with the cover plate 211 through the screwing nut 239, the screwing screw 237 and the bearing outer cover plate 236 after being assembled, because the cover plate 211 is located on the outer side of the moving plate 212, the applied force is large, and the stability of the bearing structure can be enhanced through the bearing outer cover plate 236.
As shown in fig. 5, in the present embodiment, a key 2301 is placed in a key groove of the worm shaft 238 at the center of the worm wheel 232, the worm wheel 232 is pressed onto the worm shaft 238, the drive gear 234 is pressed onto the worm shaft 238, and the drive gear 234 and the worm shaft 238 are fixed by the retainer ring 230.
As shown in fig. 3 and 7, the space-on-orbit automatic balance adjusting mechanism of the present embodiment further includes a lubrication assembly 3, and the lubrication assembly 3 is disposed inside the balance moving member 21; the lubricating component 3 comprises a lubricating seat 31 and a lubricating block 32, the lubricating seat 31 is fixed on the inner side wall of the balance moving part 21, and the lubricating block 32 is connected on the lubricating seat 31 and is in contact with the inner ring edge 12 or the outer ring edge 13 of the annular guide rail 1. Through setting up lubricated subassembly, be favorable to the lubrication to ring rail, avoid balanced moving part to appear jamming etc. along ring rail operation.
In a preferred embodiment of the present invention, as shown in fig. 3 and 7, there are two lubricating assemblies 3 in the present embodiment, and the lubricating blocks 32 of the two lubricating assemblies 3 are respectively in contact with the inner ring edge 12 and the outer ring edge 13 of the annular guide rail 1; the lubricating block 32 is elastically connected to the lubricating seat 31; the stick 32 comprises oil impregnated polyimide. Through setting up two lubricated subassemblies, can all lubricate ring rail's inner ring side and outer ring side. The lubricating block is elastically connected to the lubricating seat, so that the lubricating block can be tightly attached to the annular guide rail, and the surface of the annular guide rail can still be attached to the lubricating block when the lubricating block is abraded. The oil-impregnated polyimide is used as a lubricating piece, and the polyimide is used as a porous lubricating material, so that the risk of easy volatilization and pollution of lubricating oil caused by the lubrication of the traditional felt is avoided.
As shown in fig. 7, the lubricant block 32 of this embodiment is provided with a V-shaped locking groove 34 for being fittingly locked with the inner ring edge 12 and the outer ring edge 13 of the ring rail 1.
Specifically, as shown in fig. 7, the lubricant block 32 of the present embodiment is elastically connected to the lubricant base 31 through a spring 33, and the spring 33 is placed on the bottom of the lubricant base 31, and functions to enable the lubricant block 32 to tightly adhere to the annular guide rail 1, and to still adhere to the inner ring edge 12 and the outer ring edge 13 of the annular guide rail 1 when the lubricant block 32 is worn, so as to ensure that the lubricant block 32 is smoothly and not stuck in the lubricant base 31 when the lubricant block 32 is placed.
As shown in fig. 2 and 3, the counterweight assembly 2 of the present embodiment can move clockwise or counterclockwise on the ring rail 1. The balance motion member 21 comprises a cover plate 211, a motion plate 212, a concentric wheel 213 and an eccentric wheel 214, the concentric wheel 213 and the eccentric wheel 214 of the embodiment are rotatably mounted on the motion plate 212, the concentric wheel 213 and the eccentric wheel 214 are respectively rotatably disposed at two sides of the ring guide 1, the concentric wheel 213 is located at the inner ring side of the ring guide 1 and is in rotational contact with the inner ring edge 12 of the ring guide 1, and the eccentric wheel 214 is located at the outer ring side of the ring guide 1 and is in rotational contact with the outer ring edge 13 of the ring guide 1; concentric wheel 213 is fixed to moving plate 212 by means of screws and nuts, tightened so that concentric wheel 213 is close to the inside of circular guide 1, and tightened so that eccentric wheel 214 is close to the outside of circular guide 1. Preferably, the outer ring side of the ring guide 1 is provided with two eccentric wheels 214, and the inner ring side of the ring guide 1 is provided with two concentric wheels 213. The cover plate 211 is installed on the outer side of the moving plate 212 through screws, and the arrangement of the cover plate 211 avoids the danger of operators on a worm gear or a driving gear clamp when the balance block assembly moves. The cover plate 211 of the present embodiment may be a tungsten steel block cover plate, and the moving plate 212 may be a tungsten steel plate. The bottom of the cover plate 211 of the two balance block assemblies 2 on the annular guide rail 1 is provided with a mechanical limiting block 24, one mechanical limiting block 24 is close to the inner ring, one mechanical limiting block 24 is close to the outer ring, the two mechanical limiting blocks 24 are used for limiting the starting point and the end point of the two balance block assemblies 2 on the annular guide rail 1, and after the soft limiting of the Hall sensor fails, the mechanical limiting blocks 24 can be utilized for limiting.
As shown in fig. 3, the terminal box 22 of the present embodiment is provided with a mounting groove for mounting the hall sensor 221, and the terminal box 22 is further provided with a cable fixing hole 222 for a cable to pass through. By arranging the two hall sensors 221, the two hall sensors 221 on the two balance weight assemblies 2 are prevented from moving in the circumferential direction without interference. Be equipped with driver circuit board in the terminal box 22, driver circuit board is connected with hall sensor 221 and driving motor 231, and driver circuit board passes through the screw to be connected with the terminal box, and driver circuit board can control driving motor 231's direction of rotation according to the spacing signal that hall sensor 221 obtained, can also control driving motor 231's step number etc. and then can play the effect of adjustment balance.
The operation process of the space on-track automatic balance adjusting mechanism of the embodiment is that the annular guide rail can be installed on a rotating device (such as a centrifuge), and the balance block assembly can perform circular motion on the annular guide rail under the driving of the driving assembly. The junction box sends a command to the driving motor after receiving the command, the driving motor rotates forwards and backwards according to the command, meanwhile, the worm is driven to rotate forwards and backwards, the worm and the worm wheel move in a meshed mode, finally, the gear ring of the gear ring moves along the annular guide rail, unbalance is adjusted by changing the position of the balance block assembly, after the balance block assembly reaches a proper position, the whole rotating assembly reaches a balanced state, and the balance block assembly stops moving.
Example 2
As shown in fig. 8, the spatial on-orbit turntable assembly of this embodiment includes the above-mentioned spatial on-orbit automatic balance adjustment mechanism, and further includes a turntable 4, an annular guide rail of the spatial on-orbit automatic balance adjustment mechanism is fixedly mounted on an upper side surface of the turntable 4, a limiting magnetic steel arranged corresponding to the hall sensor 221 is disposed on the upper side surface of the turntable 4, and when the balance weight assembly 2 moves to a position where the limiting magnetic steel is located, the hall sensor 221 is matched with the limiting magnetic steel and obtains a limiting signal.
The space on-orbit turntable assembly of the embodiment has the advantages that the magnetic steel is arranged on the turntable, and when the balance block assembly moves to enable the Hall sensor to correspond to the magnetic steel, the Hall sensor obtains a limiting signal.
According to a preferred scheme of the embodiment, the limiting magnetic steel comprises end point limiting magnetic steel and start point limiting magnetic steel, and the end point limiting magnetic steel and the start point limiting magnetic steel are respectively matched with the two Hall sensors on the rotary table in a one-to-one correspondence manner. The balance block assembly can be limited at the starting point position and the end point position by arranging the starting point limiting magnetic steel and the end point limiting magnetic steel, so that the balance block assembly can circularly move back and forth between the starting point position and the end point position to adjust the balance.
As shown in fig. 8, a preferred embodiment of this embodiment is that the upper side surface of the turntable 4 is provided with a starting point limiting column and an end point limiting column which are matched with the mechanical limiting block 24 on the bottom wall of the balance block assembly 2, the starting point limiting magnetic steel and the end point limiting magnetic steel are located between the starting point limiting column and the end point limiting column, the starting point limiting magnetic steel is arranged adjacent to the starting point limiting column, and the end point limiting magnetic steel is arranged adjacent to the end point limiting column. The starting point limiting magnetic steel and the end point limiting magnetic steel are arranged between the starting point limiting column and the end point limiting column, and in general, the mechanical limiting is ineffective as long as the limiting magnetic steel and the Hall sensor are used for sensing to perform soft limiting. When the soft limit fails, the mechanical limit can be performed by using the cooperation of the mechanical limit block and the limit column.
For the scheme that two balance block assemblies 2 are preferably adopted in embodiment 1, as shown in fig. 8, the two start point limiting magnetic steels of this embodiment are arranged in a staggered manner without interfering with each other, and are respectively a first start point limiting magnetic steel 41 and a second start point limiting magnetic steel 43; the two end point limiting magnetic steels are arranged in a staggered manner and are not interfered with each other, and are respectively a first end point limiting magnetic steel 42 and a second end point limiting magnetic steel 44; the two starting point limiting columns are arranged in a staggered mode and do not interfere with each other, namely a first starting point limiting column 45 and a second starting point limiting column 47, the first starting point limiting column 45 is located on the inner ring side of the second starting point limiting column 47 in the circumferential direction, and therefore the two balance block assemblies 2 do not interfere with each other when the movement starting points are limited; the two end point limiting posts are arranged in a staggered mode and do not interfere with each other, namely a first end point limiting post 46 and a second end point limiting post 48, the first end point limiting post 46 is located on the inner ring side of the second end point limiting post 48 in the circumferential direction, and therefore the two balance block assemblies 2 do not interfere with each other when the movement end point is limited.
The turntable 4 of this embodiment is provided with an annular cable groove, the annular cable groove is arranged concentrically with the annular guide rail 1, the junction box 22 is provided with a cable support 25, and a cable in the junction box 22 is connected with a cable in the cable groove on the turntable 4 through the cable support 25.
The operating principle of the space on-orbit turntable assembly of the embodiment is that the turntable rotates under the driving of the driving device, and the annular guide rail is fixed on the turntable and is connected with the balance block assembly in a sliding manner, so that the unbalance amount of the turntable in the rotating process can be adjusted by utilizing the movement of the balance block assembly on the annular guide rail.
In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the invention and to simplify the description, and are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and are not to be considered limiting of the invention.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or to implicitly indicate the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
In the present invention, unless otherwise expressly stated or limited, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through an intermediate. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.
Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art within the scope of the present invention.
Claims (7)
1. A spatial on-orbit turntable assembly is characterized by comprising a spatial on-orbit automatic balance adjusting mechanism and a turntable, wherein the spatial on-orbit automatic balance adjusting mechanism comprises an annular guide rail and a balance block assembly, the balance block assembly comprises a balance moving part, a driving assembly and a junction box, the driving assembly is connected with the balance moving part, the junction box is connected with the driving assembly, and the balance moving part is arranged on the annular guide rail and can move along the annular guide rail under the driving of the driving assembly; the junction box is provided with a Hall sensor and controls the driving assembly to operate according to a limiting signal obtained by the Hall sensor;
the annular guide rail of the space on-orbit automatic balance adjusting mechanism is fixedly arranged on the upper side surface of the rotary table, the upper side surface of the rotary table is provided with limiting magnetic steel which is arranged corresponding to the Hall sensor, and when the balance block assembly moves to the position of the limiting magnetic steel, the Hall sensor is matched with the limiting magnetic steel to obtain a limiting signal;
the limiting magnetic steel comprises an end point limiting magnetic steel and a starting point limiting magnetic steel, and the end point limiting magnetic steel and the starting point limiting magnetic steel are respectively matched with the two Hall sensors on the rotary table in a one-to-one correspondence manner; the upper side face of the rotary disc is provided with a starting point limiting column and an end point limiting column which are matched with a mechanical limiting block on the bottom wall of the balance block assembly, the starting point limiting magnetic steel and the end point limiting magnetic steel are located between the starting point limiting column and the end point limiting column, the starting point limiting magnetic steel is adjacent to the starting point limiting column and is arranged, and the end point limiting magnetic steel is adjacent to the end point limiting column.
2. The space-on-orbit turntable assembly of claim 1, wherein the number of the Hall sensors is two, and the two Hall sensors are arranged at intervals along the radial direction of the annular guide rail.
3. The space-on-orbit turntable assembly of claim 1, wherein the number of the balance block assemblies is two, and the bottom walls of the two balance block assemblies are respectively provided with a mechanical stopper, the two mechanical stoppers are both located at the outer annular side of the annular guide rail, and the distance between one mechanical stopper and the outer annular edge of the annular guide rail is greater than the distance between the other mechanical stopper and the outer annular edge of the annular guide rail.
4. The space-on-orbit turntable assembly of claim 1, wherein the driving assembly comprises a driving motor, a worm wheel, a worm and a driving gear, the driving motor is connected with the junction box, the annular guide rail is provided with a gear ring, the driving motor is mounted on the balance motion member, the worm wheel, the worm and the driving gear are all located on the inner side of the balance motion member, the worm wheel is rotatably connected on the balance motion member, an output shaft of the driving motor is connected with the worm, the worm is meshed with the worm wheel, and the driving gear is coaxially connected with the worm wheel and meshed with the gear ring.
5. The space-on-orbit turntable assembly according to claim 4, wherein both ends of the worm are respectively rotatably mounted on the inner side wall of the balance moving member through bearings;
the gear ring is located on the outer ring edge of the annular guide rail, the worm wheel and the driving gear are respectively located on the outer ring side of the annular guide rail, the driving motor is located on the inner ring side of the annular guide rail, and the worm is located above or below the annular guide rail.
6. The space-orbiting scroll assembly of any one of claims 1 to 5, further comprising a lubrication assembly disposed inside the balance moving member; the lubricating component comprises a lubricating seat and a lubricating block, the lubricating seat is fixed on the inner side wall of the balance moving part, and the lubricating block is connected to the lubricating seat and is in contact with the edge of the inner ring or the edge of the outer ring of the annular guide rail.
7. The space-orbiting scroll member assembly according to claim 6 wherein said lube block is resiliently attached to said lube base; the stick includes an oil impregnated polyimide.
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| Application Number | Priority Date | Filing Date | Title |
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| US4867006A (en) * | 1987-04-22 | 1989-09-19 | Giberson Melbourne F | Rotating shaft mounted actuating mechanism |
| US5007305A (en) * | 1987-12-03 | 1991-04-16 | Schmitt Industries, Inc. | Ring balancer |
| US9879759B1 (en) * | 2014-08-19 | 2018-01-30 | George Mauro | Precision positioning device and stage incorporating a globoid worm and its manufacture |
| CN110921227B (en) * | 2019-11-08 | 2020-10-16 | 中国科学院自动化研究所 | Carrying mechanism for on-line walking |
| CN111086659B (en) * | 2019-12-31 | 2021-05-28 | 中国科学院空间应用工程与技术中心 | Annular inspection driving mechanism outside material cabin and annular inspection mechanism |
| WO2022021729A1 (en) * | 2020-07-30 | 2022-02-03 | 广东美的白色家电技术创新中心有限公司 | Balance assembly and household appliance |
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