CN108974394B - Automatic locking and unlocking device for space active vibration isolation system - Google Patents
Automatic locking and unlocking device for space active vibration isolation system Download PDFInfo
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- CN108974394B CN108974394B CN201810568695.1A CN201810568695A CN108974394B CN 108974394 B CN108974394 B CN 108974394B CN 201810568695 A CN201810568695 A CN 201810568695A CN 108974394 B CN108974394 B CN 108974394B
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- 238000002955 isolation Methods 0.000 title claims abstract description 12
- 230000007246 mechanism Effects 0.000 claims abstract description 39
- 238000000429 assembly Methods 0.000 claims abstract description 4
- 230000000712 assembly Effects 0.000 claims abstract description 4
- 230000005540 biological transmission Effects 0.000 claims description 22
- 230000006835 compression Effects 0.000 claims description 20
- 238000007906 compression Methods 0.000 claims description 20
- 238000005096 rolling process Methods 0.000 claims description 14
- 240000004282 Grewia occidentalis Species 0.000 claims description 13
- 230000033001 locomotion Effects 0.000 claims description 6
- 230000003321 amplification Effects 0.000 claims description 4
- 210000000078 claw Anatomy 0.000 claims description 4
- 238000003199 nucleic acid amplification method Methods 0.000 claims description 4
- 230000008602 contraction Effects 0.000 claims description 2
- 238000007789 sealing Methods 0.000 claims description 2
- 238000000034 method Methods 0.000 abstract description 4
- 230000008569 process Effects 0.000 abstract description 4
- 230000005486 microgravity Effects 0.000 description 3
- 230000001174 ascending effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000006978 adaptation Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B64—AIRCRAFT; AVIATION; COSMONAUTICS
- B64G—COSMONAUTICS; VEHICLES OR EQUIPMENT THEREFOR
- B64G1/00—Cosmonautic vehicles
- B64G1/22—Parts of, or equipment specially adapted for fitting in or to, cosmonautic vehicles
- B64G1/64—Systems for coupling or separating cosmonautic vehicles or parts thereof, e.g. docking arrangements
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- Engineering & Computer Science (AREA)
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- Aviation & Aerospace Engineering (AREA)
- Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)
- Vibration Prevention Devices (AREA)
Abstract
The invention provides a space automatic locking and unlocking device for an active vibration isolation system, which mainly comprises a main support assembly, a stator frame, a float plate and four corner support assemblies, wherein the main support assembly is connected with the stator frame; the main support assembly comprises a main support cone column, an actuating mechanism assembly, a travel switch assembly and a driving screw mechanism assembly; the main support component is arranged at the middle position of the stator/the floater to perform a preloading function on the floater platform, four corner auxiliary support structures around the main support component are connected with the side walls of the stator frame to be installed as auxiliary supports so that the floater platform and the stator frame are connected into a whole, the main support component arranged on the stator adopts a three-jaw clamp structure to grasp a target object and is tensioned, the auxiliary supports utilize the reaction force generated by the main support to grasp the floater platform to support the floater, and the main support component plays a main role in the upward loading process and the four corner supports play a main role in the downward loading process; the whole device occupies small space, the unlocking process is simple and quick, and the double lock has a guiding function.
Description
Technical Field
The invention relates to the technical field of aviation machinery control, in particular to an automatic locking and unlocking device for a space active vibration isolation system.
Background
The microgravity environment condition in the space is not really simulated in the earth or near-earth environment at present, and an experimental system is required to be placed in space to be completed in order to be capable of carrying out relevant scientific experiments in the environment with high microgravity level. The related experimental project needs to provide a carrying platform for the experimental device and materials, and as the running of other mechanical devices in the space station tends to generate interference of factors such as vibration, the platform is required to have a better locking state with the stator during the ascending of rocket carrying, and the floater can be separated from the stator after entering a space orbit to become a platform floating in space, so that the high microgravity level condition required by the scientific experimental project is met, and therefore, the device capable of enabling the experimental platform to be locked, connected and unlocked with the stator is required under the premise of no astronaut care.
Disclosure of Invention
The present invention is directed to a space auto-lock unlocking device for an active vibration isolation system, which is characterized by solving the aforementioned problems of the prior art.
In order to achieve the above purpose, the technical scheme adopted by the invention is as follows:
the utility model provides a space automatic locking unlocking device for initiative vibration isolation system, includes float board, stator frame, main support subassembly and four corners auxiliary support subassembly, the main support subassembly lay in stator frame with float board intermediate position, four corners auxiliary support subassembly is fixed respectively on the stator frame wall.
Preferably, the four-corner auxiliary supporting structure is connected with the stator frame by adopting a screw fastener.
Preferably, the main support assembly comprises a main support cone column, an actuating mechanism assembly, a travel switch combination assembly and a driving screw mechanism assembly;
The main supporting vertebral column is arranged on the floater plate, is opposite to the transmission shaft of the driving screw mechanism assembly component, and provides a grabbing point for the actuator component;
The actuating mechanism assembly finishes the actions of grabbing and loosening the main supporting cone column;
the travel switch combination controls the power output of the driving screw mechanism assembly component.
Preferably, the actuating mechanism component comprises a first rolling shaft, a second rolling shaft, a mechanism supporting frame, a roller, three compression bars, a jacking movable disc, a positioning column, a driving cone and a main position pushing plate;
the travel switch assembly comprises a travel switch upper travel switch, a travel switch lower travel switch bracket;
the assembly component of the driving screw mechanism comprises a transmission shaft, a motor supporting base, a bearing supporting frame and a sealing end bearing compression ring;
The rotary supporting point of the compression bar is arranged on the mechanism supporting frame through the first rolling shaft, the roller at the lower end of the compression bar is clamped in the chute of the driving cone through the second rolling shaft, the spring between the first rolling shaft and the second rolling shaft is connected with the position, close to the bottom, of the adjacent compression bar, and the three compression bars are in a triangular claw shape; the ejection movable disc and the transmission shaft are assembled at the end part of the transmission shaft in a screw nut matching way; the travel switch support is fixed on the outer side of the mechanism support frame, and the main push plate fixed on the driving cone penetrates through the travel switch support and is positioned between the upper travel switch and the lower travel switch;
The motor is installed on the motor support base, the bearing support frame is fixed with the motor support base through screws, and the end-capped bearing pressing ring is positioned at the lower end of the bearing.
Preferably, the whole structure uses the motor as power input, the positioning column fixed on the supporting frame of the mechanism is matched with the arc groove on the ejection moving disc to limit the circular motion of the ejection moving disc to only enable the ejection moving disc to linearly move along the axis direction of the positioning column so as to enhance the integral stability of the transmission shaft, the transmission shaft rotationally drives the driving cone, the roller at the lower end of the pressing rod is clamped in the sliding groove to limit the axial motion of the driving cone, and the driving cone is enabled to linearly move along the axial direction of the transmission shaft.
Preferably, when the motor rotates the driving cone along the pointer to rise, the pressing rod and the roller roll down the bottom of the cone from the tip along the chute of the driving cone, and as the driving cone is in a shape of being wide at the upper tip and the lower tip, the driving cone brings the pushing force to the top outside of the bottom of the pressing rod, and the larger inward contraction force of the end part of the pressing rod is obtained through lever amplification, so that the grabbing gesture of the three pressing rods of the main support assembly is completed
Preferably, when the main support assembly is used for grabbing the main support conical column, the disc-shaped compression ring and the four-corner auxiliary support which are arranged on the actuating mechanism support frame are used for grabbing the reaction force generated by the float platform by the main support to be used as the counter-support force, the floats are propped up, the rigidity of the connected float plates is guaranteed, and the four-corner support mechanism adopts a conical bowl type structural design to guarantee that the connection is more stable during pressing.
Preferably, when the motor rotates anticlockwise to drive the driving cone to descend, the spring tension drives the roller to roll from the lower end face of the driving cone to the position of the tip of the driving cone in a manner that the roller is attached to the sliding groove, so that the pressing rod loosens the main supporting cone column.
Preferably, the motor power output is in contact with the positioning push plate arranged on the driving cone through the upper part of the travel switch and the lower part of the travel switch to control motor driving.
Preferably, when the positioning push plate is in lower contact with the travel switch, the motor is driven clockwise to stop; and when the positioning push plate is contacted with the travel switch, the motor is driven to stop anticlockwise.
The beneficial effects of the invention are as follows:
The invention can complete the automatic separation unlocking and repeated locking actions of the stator/floater of the space active vibration isolation system under the unattended condition of the track space, fully solves the problems of locking connection of the floater platform during the ascending of the rocket and the automatic unlocking and separating work after the track, has small occupied space, simple and quick unlocking process and guiding function of the double locking.
Drawings
FIG. 1 is an overall schematic of a lock unlocking device;
FIG. 2 is a schematic main support assembly body view;
FIG. 3 is an external schematic view of an actuator assembly;
FIG. 4 is a schematic view of the interior of the actuator assembly;
FIG. 5 is a schematic view of a travel switch assembly;
FIG. 6 is an external schematic view of the drive screw assembly;
FIG. 7 is an internal schematic view of the drive screw assembly;
FIG. 8 is a schematic view of an auxiliary support device;
[1] The device comprises a float plate, a stator frame, a main support assembly, a four-corner auxiliary support assembly, a main support cone column, an actuating mechanism assembly, a travel switch assembly, a driving screw mechanism assembly, a disc-shaped compression ring, a mechanism support frame, a first roller, a second roller, a compression rod, a spring, a driving disc, a driving cone, a positioning push plate, a positioning column, a travel switch support, a travel switch upper, a travel switch lower, a travel switch support frame, a motor support base, a transmission shaft, a motor, a bearing, and a bearing.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings, in order to make the objects, technical solutions and advantages of the present invention more apparent. It should be understood that the detailed description is presented by way of example only and is not intended to limit the invention.
Examples
The installation layout of the device is shown in figure 1, and mainly comprises a main support assembly, a stator frame, a float plate and four corner support assemblies; wherein the main support component is positioned at the middle position of the stator frame and the float plate, and the four-corner support components are respectively fixed on the wall of the stator frame.
The main support assembly is shown in fig. 2 and comprises a main support cone column, an actuating mechanism assembly, a travel switch combination assembly and a driving screw mechanism assembly. Wherein the main support cone column is arranged on the float plate and is positioned in a way of being centered with the axes of the rest main support components, namely the positions of the transmission shafts; the actuating mechanism component comprises a first rolling shaft, a second rolling shaft, a mechanism supporting frame, a roller, three compression bars, a jacking movable disc, a positioning column, a driving cone and a main position pushing plate (figures 3 and 4); the travel switch assembly comprises a travel switch upper travel switch and a travel switch lower travel switch bracket (figure 5); the drive screw assembly includes a drive shaft, a motor support base, bearings, a bearing support frame, and a capped bearing press ring (fig. 6 and 7).
The whole structure takes a motor as power input, the transmission shaft rotates to drive the cone, the ejection movable disk and the transmission shaft are assembled at the end part of the transmission shaft in a screw nut matching way, and a positioning column fixed on the mechanism supporting frame is matched with an arc groove on the ejection movable disk to limit the circular motion of the ejection movable disk, so that the ejection movable disk only moves linearly along the axis direction of the positioning column to enhance the overall stability of the transmission shaft. The transmission shaft and the driving cone are also of screw-nut structures, and as the roller arranged at the lower part of the compression bar is clamped in the chute of the driving cone, the axial movement of the driving cone is limited, so that the driving cone moves linearly upwards and downwards along the axial direction of the transmission shaft.
When the device is used for locking, the motor rotates along the pointer to drive the cone to rise, the rotating fulcrum of the pressure lever is arranged on the mechanism supporting frame through the roller, the whole structure is similar to a lever structure, the spring is connected with the adjacent pressure lever to be close to the bottom position, the roller keeps in contact with the cone sliding groove due to the tensile force of the spring, the pressure lever roller rolls down the cone bottom along the driving cone sliding groove by the tip, the driving cone is in a shape of being wide at the upper tip and the lower tip, so that pushing force is brought to the top outside of the pressure lever bottom position, larger inward shrinkage force of the pressure lever end part is obtained through lever amplification, and the grabbing posture of the triangular claw disc (namely three pressure levers) of the main supporting component is completed. When the main support assembly grabs the main support cone column, the disc-shaped compression rings and the four corner supports provide reverse supporting force, the rigidity of the connecting float plate is guaranteed, and the four corner support mechanisms adopt cone bowl type structural design to guarantee that the connection is more stable during pressing.
When the device is used for unlocking, the motor rotates anticlockwise, the cone is driven to descend, and the tension of the cone descending spring drives the roller to roll to the tip position from the large end face of the cone to be attached to the sliding groove, so that the claw disc is loosened.
The travel switch assembly is shown in fig. 5, and the control of motor driving is mainly completed through the contact of the upper switch and the lower switch with a positioning push plate arranged on a driving cone. When the positioning push plate is in lower contact with the travel switch, the motor is driven clockwise to stop; and when the positioning push plate is contacted with the travel switch, the motor is driven to stop anticlockwise.
By adopting the technical scheme disclosed by the invention, the following beneficial effects are obtained:
The whole locking device can support the total weight of the floats and the load to be 40Kg. The motor is driven to unlock and lock through the ground or remote control operation, the designed structure of the locking device adopts the force amplification principle, so that a larger locking force (up to 4000N) can be obtained by using a lower-power motor, the whole mechanism is small in size and structure weight, the movable space (three-way) between the stator and the floater plus or minus 10mm can be met under the limitation of the condition that the locking is needed after unlocking, and the locking guiding function is realized during the locking.
The foregoing is merely a preferred embodiment of the present invention and it should be noted that modifications and adaptations to those skilled in the art may be made without departing from the principles of the present invention, which is also intended to be covered by the present invention.
Claims (5)
1. The space automatic locking and unlocking device for the active vibration isolation system is characterized by comprising a floater plate, a stator frame, a main support assembly and four-corner auxiliary support assemblies, wherein the main support assembly is arranged at the middle position of the stator frame and the floater plate, and the four-corner auxiliary support assemblies are respectively fixed on the wall of the stator frame; the four-corner auxiliary supporting structure is connected with the stator frame by adopting screw fasteners;
The main support assembly comprises a main support cone column, an actuating mechanism assembly, a travel switch combination assembly and a driving screw mechanism assembly;
The main supporting vertebral column is arranged on the floater plate, is opposite to the transmission shaft of the driving screw mechanism assembly component, and provides a grabbing point for the actuator component;
The actuating mechanism assembly finishes the actions of grabbing and loosening the main supporting cone column;
the travel switch combination controls the power output of the driving screw mechanism assembly component;
The actuating mechanism assembly comprises a first rolling shaft, a second rolling shaft, a mechanism supporting frame, a roller, three compression bars, a jacking movable disc, a positioning column, a driving cone and a main position pushing plate;
the travel switch assembly comprises a travel switch upper travel switch, a travel switch lower travel switch bracket;
the assembly component of the driving screw mechanism comprises a transmission shaft, a motor supporting base, a bearing supporting frame and a sealing end bearing compression ring;
The rotary supporting point of the compression bar is arranged on the mechanism supporting frame through the first rolling shaft, the roller at the lower end of the compression bar is clamped in the chute of the driving cone through the second rolling shaft, the spring between the first rolling shaft and the second rolling shaft is connected with the position, close to the bottom, of the adjacent compression bar, and the three compression bars are in a triangular claw shape; the ejection movable disc and the transmission shaft are assembled at the end part of the transmission shaft in a screw nut matching way; the travel switch support is fixed on the outer side of the mechanism support frame, and the main push plate fixed on the driving cone penetrates through the travel switch support and is positioned between the upper travel switch and the lower travel switch;
the motor is arranged on the motor support base, the bearing support frame is fixed with the motor support base through screws, and the end-capped bearing pressing ring is positioned at the lower end of the bearing;
The whole structure takes the motor as power input, the positioning column fixed on the mechanism supporting frame is matched with the arc groove on the ejection moving disc to limit the circular motion of the ejection moving disc to only enable the ejection moving disc to linearly move along the axis direction of the positioning column so as to enhance the integral stability of the transmission shaft, the transmission shaft rotationally drives the driving cone, the roller at the lower end of the pressing rod is clamped in the sliding groove to limit the axial motion of the driving cone, and the driving cone axially moves linearly along the transmission shaft;
When the main support assembly is used for grabbing the main support conical column, the disc-shaped compression rings arranged on the actuating mechanism support frame and the four-corner auxiliary support provide reverse support force, so that the rigidity of the connecting float plate is guaranteed, and the four-corner support mechanism adopts a conical bowl type structural design to ensure that the connection is more stable during pressing.
2. The space automatic locking and unlocking device for an active vibration isolation system according to claim 1, wherein when the motor rotates the driving cone along the pointer to ascend, the pressing rod and the roller roll down the bottom of the cone from the tip along the sliding groove of the driving cone, the driving cone is in a shape of being wide at the upper tip and the lower tip, so that the driving cone brings the pushing force to the top outside at the bottom of the pressing rod, the larger inward contraction force of the end part of the pressing rod is obtained through lever amplification, and the grabbing posture of the three pressing rods of the main support assembly is completed.
3. The space automatic locking and unlocking device for an active vibration isolation system according to claim 1, wherein when the motor rotates anticlockwise to drive the driving cone to descend, the spring tension drives the roller to roll from the lower end surface of the driving cone to the position of the tip of the driving cone in a manner of being attached to the sliding groove, so that the compression bar loosens the main supporting cone column.
4. The space automatic locking and unlocking device for an active vibration isolation system according to claim 1, wherein the motor power output is controlled by the contact of the upper part of the travel switch and the lower part of the travel switch with a positioning push plate arranged on the driving cone.
5. The space automatic locking and unlocking device for an active vibration isolation system according to claim 4, wherein when the positioning push plate is in lower contact with the travel switch, the motor is driven to stop clockwise; and when the positioning push plate is contacted with the travel switch, the motor is driven to stop anticlockwise.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810568695.1A CN108974394B (en) | 2018-06-05 | 2018-06-05 | Automatic locking and unlocking device for space active vibration isolation system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810568695.1A CN108974394B (en) | 2018-06-05 | 2018-06-05 | Automatic locking and unlocking device for space active vibration isolation system |
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| Publication Number | Publication Date |
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| CN108974394A CN108974394A (en) | 2018-12-11 |
| CN108974394B true CN108974394B (en) | 2024-05-10 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201810568695.1A Active CN108974394B (en) | 2018-06-05 | 2018-06-05 | Automatic locking and unlocking device for space active vibration isolation system |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111044441B (en) * | 2019-12-31 | 2022-04-19 | 中国科学院空间应用工程与技术中心 | Material exposure test box locking mechanism and exposure device |
| CN114030659B (en) * | 2021-11-18 | 2022-05-03 | 中国科学院空间应用工程与技术中心 | Multifunctional active capturing mechanism and docking device |
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| CN104864031A (en) * | 2015-05-18 | 2015-08-26 | 上海交通大学 | Magnetostrictive drive active and passive integrated multi-degree-of-freedom precision vibration isolating device |
| EP3012194A1 (en) * | 2014-10-24 | 2016-04-27 | Thales | Manipulation of a satellite in space |
| CN106347718A (en) * | 2016-11-08 | 2017-01-25 | 中国科学院空间应用工程与技术中心 | Vibration isolation platform serving high-microgravity scientific experiments |
| CN206484587U (en) * | 2017-01-12 | 2017-09-12 | 肖博屹 | A kind of Artificial grip module based on flexible shaft |
| CN208731248U (en) * | 2018-06-05 | 2019-04-12 | 中国科学院空间应用工程与技术中心 | An automatic locking and unlocking device for space active vibration isolation system |
-
2018
- 2018-06-05 CN CN201810568695.1A patent/CN108974394B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103331759A (en) * | 2013-06-28 | 2013-10-02 | 哈尔滨工业大学 | Large-allowance capturing mechanism for end effector of spatial large manipulator |
| EP3012194A1 (en) * | 2014-10-24 | 2016-04-27 | Thales | Manipulation of a satellite in space |
| CN104864031A (en) * | 2015-05-18 | 2015-08-26 | 上海交通大学 | Magnetostrictive drive active and passive integrated multi-degree-of-freedom precision vibration isolating device |
| CN106347718A (en) * | 2016-11-08 | 2017-01-25 | 中国科学院空间应用工程与技术中心 | Vibration isolation platform serving high-microgravity scientific experiments |
| CN206484587U (en) * | 2017-01-12 | 2017-09-12 | 肖博屹 | A kind of Artificial grip module based on flexible shaft |
| CN208731248U (en) * | 2018-06-05 | 2019-04-12 | 中国科学院空间应用工程与技术中心 | An automatic locking and unlocking device for space active vibration isolation system |
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