CN208060178U - A kind of mechanical pulsing formula space junk active racemization experimental system - Google Patents
A kind of mechanical pulsing formula space junk active racemization experimental system Download PDFInfo
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- CN208060178U CN208060178U CN201820606406.8U CN201820606406U CN208060178U CN 208060178 U CN208060178 U CN 208060178U CN 201820606406 U CN201820606406 U CN 201820606406U CN 208060178 U CN208060178 U CN 208060178U
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- bearing
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- space junk
- retainer
- racemization
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Abstract
The utility model discloses a kind of mechanical pulsing formula space junk active racemization experimental systems, including space junk simulation mechanism and racemization mechanism；Space junk simulation mechanism includes Weight plate, the axis of rotation, rotor, nutation shaft locking pin, precession axis retainer, nutation shaft retainer, precession axis, encoder wireless signal transmission, precession axis locking pin, pedestal, nutation shaft, the first deep groove ball bearing, band retaining ring insertion single-bearing type bearing support, single thrust bearing, the second deep groove ball bearing and bearing (ball) cover；Racemization mechanism includes six degree of freedom manipulator and end effector；The end of six degree of freedom manipulator is equipped with end effector；End effector includes arm end ring flange, the first connector, six-dimension force sensor, elastic damper, the second connector and isobaric sphere.The system can simulate space junk or movement of the spacecraft on space orbit of failing, and contact rotor, simulating contact formula racemization process using end effector.
Description
Technical field
The utility model is related to space junk racemization field, specifically a kind of mechanical pulsing formula space junk active racemization is real
Check system.
Background technology
As mankind's space development utilizes movable increase, the presence of space junk that can generate weight to the environment of space orbit
Big influence.On the one hand, the presence of space junk seriously threatens the safety of in-orbit spacecraft, once it collides, gently then
Spacecraft is destroyed, it is heavy then generate chain reaction to generate a large amount of space junk.Space junk has lost pose adjustment ability,
And it is run under runaway condition for a long time, itself residual angular momentum before by the perturbation torque such as solar light pressure, gravity gradient and failure
The influence of factor often will appear tumbling motion.Therefore, it is the key step of safe and effective capture space junk so that it is stopped operating
Suddenly.On the other hand, the satellite to go wrong can be recycled by means of the racemization technology mankind, to accomplish recycling, saved
A large amount of launch costs.Document (KAWAMOTO S, MATSUMOTO K, WAKABAYASHI S.Ground experiment of
mechanical impulse method for uncontrollable satellite capturing[C]
.Proceeding of the 6th International Symposium on Artificial Intelligence and
Robotics&Automation in Space(iSAIRAS),Montreal:Canadian Space Agency, 2001.) in
Experimental facilities it is at high price, it is inconvenient.
Utility model content
In view of the deficiencies of the prior art, it is empty that the technical issues of the utility model intends to solve is to provide a kind of mechanical pulsing formula
Between fragment active racemization experimental system.
The technical solution that the utility model solves the technical problem is to provide a kind of mechanical pulsing formula space junk active
Racemization experimental system, it is characterised in that the system includes space junk simulation mechanism and racemization mechanism；The space junk simulation
Mechanism includes Weight plate, the axis of rotation, rotor, nutation shaft locking pin, precession axis retainer, nutation shaft retainer, precession axis, coding
Device wireless signal transmission, precession axis locking pin, pedestal, nutation shaft, the first deep groove ball bearing, band retaining ring are embedded in single-bearing type
Bearing block, single thrust bearing, the second deep groove ball bearing and bearing (ball) cover；
The bearing (ball) cover is connect with pedestal；One end of the nutation shaft is connected by the second deep groove ball bearing and bearing (ball) cover
It connects, is connect with pedestal by single thrust bearing, the other end is fixedly connected with precession axis retainer；One end of the nutation shaft is solid
Due in the through-hole of precession axis retainer, the other end is connect by the first deep groove ball bearing with nutation shaft retainer；The buckle
The bearing block of ring insertion single-bearing type bearing support is fixed on nutation shaft retainer；One end of the axis of rotation is embedded in with retaining ring
The bearing inner race of single-bearing type bearing support connects, and the other end passes through nutation shaft retainer and passes through band retaining ring with nutation shaft retainer
Embedded single-bearing type bearing support connection, end is connect with external power supply；The rotor is nested in outside the axis of rotation, is connected with the axis of rotation
It connects；The rotor is located in nutation shaft retainer；Encoder wireless signal transmission is mounted on nutation shaft retainer, is located at
Encoder inside encoder wireless signal transmission is placed on the shaft end of the axis of rotation；In encoder wireless signal transmission
The encoder in portion is connect by internal wireless device with external host computer；The Weight plate is mounted on nutation shaft retainer,
Own wt can be changed；
The racemization mechanism includes six degree of freedom manipulator and end effector；Pacify the end of the six degree of freedom manipulator
Equipped with end effector；The end effector includes arm end ring flange, the first connector, six-dimension force sensor, bullet
Property damper, the second connector and isobaric sphere；The equipressure sphere is connect by the second connector with elastic damper, elasticity
Damper is connect with six-dimension force sensor, and six-dimension force sensor is connect by the first connector with arm end ring flange, machine
Tool hand end flange is mounted on the end of six degree of freedom manipulator；Isobaric sphere is contacted with rotor engagement.
Compared with prior art, the utility model advantageous effect is：
(1) system can simulate space junk or movement of the spacecraft on space orbit of failing, and use end
Actuator contacts rotor, simulating contact formula racemization process.Rotor periphery is openr, can regard rotor as during the experiment and exist
Three axis rotary motions are done in the case of unsupported, it is truer for simulation of the space junk in space.Six degree of freedom simultaneously
The operable space of the end executive device of manipulator is bigger, therefore the operability of experimental system is stronger.This system structure
Simply, reliable for operation, precision is high, and operability is strong.
(2) there are three rotation modes for rotor：It is protected with the rotation of the axis of rotation, with the rotation of nutation shaft retainer, with precession axis
Hold the rotation of frame.The axis of rotation provides power for the rotation of rotor, and nutation shaft retainer does rotation fortune relative to precession axis retainer
Dynamic, precession axis retainer rotates relative to pedestal, therefore rotor can carry out three axis rotary motions relative to itself.With three
The motion state of a rotation mode simulation space junk in space, being moved in space to it can accomplish to accurately control.
(3) clump weight has been used, space can be accurately controlled by changing the quality of clump weight and the rotating speed of control rotor
The angle of precession and nutational angle of fragment simulation mechanism, to ensure that experiment condition is controllable.
(4) rotating speed of rotor can be monitored in real time by high resolution encoder, and encoder can be with external impetus
Source and external host computer form closed-loop control system, apply the rotating speed that can be accurately controlled at the beginning of experiment for rotor.It compiles
Code device is very helpful to the analysis of experimental result to the data of rotation shaft monitoring, can be used in the different contact methods pair of comparison
The influence of racemization process, to obtain correct experiment conclusion.
(5) encoder wireless signal transmission is wirelessly output to the rotary speed information that encoder acquires
Position machine, avoids power cord and signal transmssion line and is involved to space junk simulation mechanism, keep entire mechanism globality stronger, whole
The structure of a mechanism is more succinct.It is broken for space because can make space junk simulation mechanism not by outer force effect in this way
Piece is also more accurate in the simulation of too aerial sports.
(6) square shaft has been processed into one end of the axis of rotation, can make to pacify when rotation rotating speed is synchronous with external power supply rotating speed
Full abjection, the independence that space junk simulation mechanism moves when ensure that experiment.
(7) isobaric sphere is used, i.e., each point pressure is equal on spherome surface.Isobaric sphere connects with elastic damper
It connects, elastic damper can buffer the impact force of collision belt, for protecting six-dimension force sensor.Six-dimension force sensor can be examined
The size for surveying impact force can be used for analyzing experimental result to realize that the size of impact force in experimentation is controllable.Cause
Collision for isobaric ball and rotor is elastic collision, so its destruction to rotor surface can be avoided, can be carried out more
Secondary experiment, while six degree of freedom manipulator also being protected not to be hit the destruction of vibration.
Description of the drawings
Fig. 1 is a kind of overall structure of embodiment of the utility model mechanical pulsing formula space junk active racemization experimental system
Schematic diagram；
Fig. 2 is a kind of space junk of embodiment of the utility model mechanical pulsing formula space junk active racemization experimental system
Simulation mechanism left view schematic diagram；
Fig. 3 is that a kind of end of embodiment of the utility model mechanical pulsing formula space junk active racemization experimental system executes
Device axonometric drawing；(in figure：1, six degree of freedom manipulator；2, Weight plate；3, the axis of rotation；4, rotor；5, end effector；6, nutating
Shaft locking pin；7, precession axis retainer；8, nutation shaft retainer；9, precession axis；10, encoder wireless signal transmission；11,
Precession axis locking pin；12, pedestal；13, nutation shaft；14, the first deep groove ball bearing；15, band orifice ring is embedded in single-bearing type bearing support；
16, single thrust bearing；17, the second deep groove ball bearing；18, bearing (ball) cover；19, arm end ring flange；20, the first connection
Part；21, six-dimension force sensor；22, elastic damper；23, the second connector；24, isobaric sphere)
Specific implementation mode
Specific embodiment of the utility model is given below.Specific embodiment is only used for being further described this practicality newly
Type does not limit the application scope of the claims.
The utility model provide a kind of mechanical pulsing formula space junk active racemization experimental system (abbreviation system, referring to
Fig. 1-3), it is characterised in that the system includes space junk simulation mechanism and racemization mechanism；The space junk simulation mechanism packet
It includes Weight plate 2, the axis of rotation 3, rotor 4, nutation shaft locking pin 6, precession axis retainer 7, nutation shaft retainer 8, precession axis 9, compile
Code device wireless signal transmission 10, precession axis locking pin 11, pedestal 12, nutation shaft 13, the first deep groove ball bearing 14, band retaining ring
Embedded single-bearing type bearing support 15, single thrust bearing 16, the second deep groove ball bearing 17 and bearing (ball) cover 18；
The bearing (ball) cover 18 is located on horizontal plane；The bearing (ball) cover 18 is bolted with pedestal 12；The chapter
One end of moving axis 9 is connect by the second deep groove ball bearing 17 with bearing (ball) cover 18, is connected by single thrust bearing 16 and pedestal 12
It connects, the other end is fixedly connected with precession axis retainer 7；Single thrust bearing 16 is used to support nutation shaft 9；Nutation shaft 9 respectively with
The inner ring cooperation of the inner ring and single thrust bearing 16 of second deep groove ball bearing 17, the outer ring of the second deep groove ball bearing 17 and bearing
End cap 18 coordinates, and outer ring and the pedestal 12 of single thrust bearing 16 coordinate；Precession axis guarantor is fixed in one end of the nutation shaft 13
In the through-hole for holding frame 7, the other end is connect by the first deep groove ball bearing 14 with nutation shaft retainer 8；First deep groove ball bearing 14
Inner ring connect with nutation shaft 13, outer ring is fixed in nutation shaft retainer 8；The band retaining ring insertion single-bearing type bearing support 15
Bearing block be fixed on nutation shaft retainer 8；One end of the axis of rotation 3 is embedded in single-bearing type bearing support 15 with retaining ring
Bearing inner race connects, and the other end passes through nutation shaft retainer 8 and is embedded in single-bearing profile shaft by band retaining ring with nutation shaft retainer 8
Bearing 15 connects, and end is connect with external power supply, applies rotary motion for rotor；The rotor 4 is nested in outside the axis of rotation 3,
It is connect with the axis of rotation 3；The rotor 4 is located in nutation shaft retainer 8, is rotated with the rotation of nutation shaft retainer 8；Encoder
Wireless signal transmission 10 is mounted on nutation shaft retainer 8, the volume being located inside encoder wireless signal transmission 10
Code device is placed on the shaft end of the axis of rotation 3, for detecting rotor speed；Encoder inside encoder wireless signal transmission 10
It is connect with external host computer by internal wireless device；The Weight plate 2 is mounted on nutation shaft retainer 8, can be changed
Own wt is used to form out-of-balance force, makes rotor 4 that can form nutating and precession after rotation, to simulate space junk
Movement in space；The nutation shaft locking pin 6 coordinates with precession axis retainer 7 and nutation shaft retainer 8 respectively, for limiting
Space junk simulation mechanism nutating processed；The precession axis locking pin 11 coordinates with precession axis retainer 7 and pedestal 12 respectively, is used for
Limit space junk simulation mechanism precession；
The rotor 4 is cylinder, has good dynamic balance property, and there are three rotation modes：With the axis of rotation 3 from
Turn, with the rotation of nutation shaft retainer 8, with the rotation of precession axis retainer 7.The axis of rotation 3 provides power for the rotation of rotor 4,
Nutation shaft retainer 8 rotates relative to precession axis retainer 7, and precession axis retainer 7 does rotation fortune relative to pedestal 12
It is dynamic, therefore rotor 4 can carry out three axis rotary motions relative to itself, there are three rotation modes.
The encoder is high-resolution rotary encoder.Side has been processed into it in one end that the axis of rotation is connect with external power supply
Axis.
The racemization mechanism includes six degree of freedom manipulator 1 and end effector 5；The end of the six degree of freedom manipulator 1
End is equipped with end effector 5, and six degree of freedom manipulator 1 drives end effector 5 to touch rotor 4, makes rotor 4 in reaction force
Under the action of stop operating, realize space junk racemization simulation；The end effector 5 includes arm end ring flange
19, the first connector 20, six-dimension force sensor 21, elastic damper 22, the second connector 23 and isobaric sphere 24；The equipressure
Sphere 24 is connect by the second connector 23 with elastic damper 22, and elastic damper 22 is connect with six-dimension force sensor 21, and six
Dimensional force sensor is connect by the first connector 20 with arm end ring flange 19, and arm end ring flange 19 is mounted on six
The end of free degree manipulator 1；Isobaric sphere 24 is contacted with the cooperation of rotor 4, realizes that space is broken with frictional force using reaction force
The experiment of piece racemization；
The six-dimension force sensor 21 is used to detect the power of the power and three axis in three directions of 4 three rotation modes of rotor
Square.The elastic damper 22 is used for impact force into row buffering.The equipressure sphere 24 is used to keep impact surfaces when work
Pressure it is equal, while the surface of rotor 4 is destroyed when avoiding contact with.Isobaric sphere 24 is using isobaric ball.
The operation principle and workflow of the utility model mechanical pulsing formula space junk active racemization experimental system be：
Principle：1, when precession is object rotation, the phenomenon that axis of rotation 3 itself is rotated around precession axis 9；Nutating is object rotation
When precession occurs, showing for slight jitter (plummet being swung up and down in face) occurs during being rotated around precession axis 9 for the axis of rotation 3
As.
2, rotor 4 is by moment loading, and according to angular momentum theorem, torque is equal to 4 angular momentum of rotor to the impulsive moment of rotor 4
Knots modification.
3, Weight plate 2 is to be designed to make rotor 4 generate torque, since the presence of torque can change rotor 4
Angular momentum size and Orientation, to generate precession and nutating.
4, encoder can monitor the rotating speed of rotor 4, and the speed of rotation speed change can be used for weighing the quality of experimental result.
Workflow：
1. unpluging nutation shaft locking pin 6 and precession axis locking pin 11, then match plus several pieces for space junk simulation mechanism
Weight plate 2.
2. encoder is started to work, the axis of rotation 3 is driven to rotate to specified rotating speed using servo motor (external power supply), this
When rotor 4 also reach specified rotating speed.
3. servo motor is deviate from, rotor 4 starts to do the movement of simulation space junk.
4. driving end effector 5 to move using mechanical arm 1, so that isobaric ball 24 is contacted with rotor 4, utilize reaction
Power and frictional force make rotor 4 slow down, and simulate the process of space junk racemization.Six can be obtained from computer (host computer) at this time
The real time data that dimension force sensor 21 and encoder wireless signal transmission 10 are passed back, with for further analysis.
The utility model does not address place and is suitable for the prior art.
Claims (6)
1. a kind of mechanical pulsing formula space junk active racemization experimental system, it is characterised in that the system includes space junk simulation
Mechanism and racemization mechanism；The space junk simulation mechanism includes Weight plate, the axis of rotation, rotor, nutation shaft locking pin, precession axis
Retainer, nutation shaft retainer, precession axis, encoder wireless signal transmission, precession axis locking pin, pedestal, nutation shaft,
One deep groove ball bearing, band retaining ring insertion single-bearing type bearing support, single thrust bearing, the second deep groove ball bearing and bearing (ball) cover；
The bearing (ball) cover is connect with pedestal；One end of the nutation shaft is connect by the second deep groove ball bearing with bearing (ball) cover,
It is connect with pedestal by single thrust bearing, the other end is fixedly connected with precession axis retainer；One end of the nutation shaft is fixed
In the through-hole of precession axis retainer, the other end is connect by the first deep groove ball bearing with nutation shaft retainer；The band retaining ring
The bearing block of embedded single-bearing type bearing support is fixed on nutation shaft retainer；One end of the axis of rotation is embedded in list with retaining ring
The bearing inner race of bearing type bearing support connects, and the other end passes through nutation shaft retainer and passes through with nutation shaft retainer embedding with retaining ring
Enter the connection of single-bearing type bearing support, end is connect with external power supply；The rotor is nested in outside the axis of rotation, is connected with the axis of rotation
It connects；The rotor is located in nutation shaft retainer；Encoder wireless signal transmission is mounted on nutation shaft retainer, is located at
Encoder inside encoder wireless signal transmission is placed on the shaft end of the axis of rotation；In encoder wireless signal transmission
The encoder in portion is connect by internal wireless device with external host computer；The Weight plate is mounted on nutation shaft retainer,
Own wt can be changed；
The racemization mechanism includes six degree of freedom manipulator and end effector；The end of the six degree of freedom manipulator is equipped with
End effector；The end effector includes arm end ring flange, the first connector, six-dimension force sensor, elasticity resistance
Buddhist nun's device, the second connector and isobaric sphere；The equipressure sphere is connect by the second connector with elastic damper, elastic damping
Device is connect with six-dimension force sensor, and six-dimension force sensor is connect by the first connector with arm end ring flange, manipulator
End flange is mounted on the end of six degree of freedom manipulator；Isobaric sphere is contacted with rotor engagement.
2. mechanical pulsing formula space junk active racemization experimental system according to claim 1, it is characterised in that the chapter
Moving axis locking pin coordinates with precession axis retainer and nutation shaft retainer respectively, for limiting space junk simulation mechanism nutating；
The precession axis locking pin respectively with precession axis retainer and base engagement, for limiting space junk simulation mechanism precession.
3. mechanical pulsing formula space junk active racemization experimental system according to claim 1, it is characterised in that described turn
Son is cylinder.
4. mechanical pulsing formula space junk active racemization experimental system according to claim 1, it is characterised in that the volume
Code device is high-resolution rotary encoder.
5. mechanical pulsing formula space junk active racemization experimental system according to claim 1, it is characterised in that the axis of rotation
The one end being connect with external power supply is rectangular shaft end.
6. mechanical pulsing formula space junk active racemization experimental system according to claim 1, it is characterised in that wait pressure balls
Body is using isobaric ball.
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| CN201820606406.8U CN208060178U (en) | 2018-04-25 | 2018-04-25 | A kind of mechanical pulsing formula space junk active racemization experimental system |
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| CN201820606406.8U CN208060178U (en) | 2018-04-25 | 2018-04-25 | A kind of mechanical pulsing formula space junk active racemization experimental system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108548684A (en) * | 2018-04-25 | 2018-09-18 | 河北工业大学 | A kind of mechanical pulsing formula space junk active racemization experimental system |
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2018
- 2018-04-25 CN CN201820606406.8U patent/CN208060178U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108548684A (en) * | 2018-04-25 | 2018-09-18 | 河北工业大学 | A kind of mechanical pulsing formula space junk active racemization experimental system |
| CN108548684B (en) * | 2018-04-25 | 2024-05-03 | 河北工业大学 | Mechanical pulse type space debris active racemization experiment system |
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