CN101670891B - Locking mechanism with repeatable and emergent compulsive unlocking function - Google Patents
Locking mechanism with repeatable and emergent compulsive unlocking function Download PDFInfo
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- CN101670891B CN101670891B CN2009100931549A CN200910093154A CN101670891B CN 101670891 B CN101670891 B CN 101670891B CN 2009100931549 A CN2009100931549 A CN 2009100931549A CN 200910093154 A CN200910093154 A CN 200910093154A CN 101670891 B CN101670891 B CN 101670891B
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Abstract
A locking mechanism with repeatable and emergent compulsive unlocking function can be used as a protecting device or a magnetic suspension flywheel or a magnetic suspension control moment gyrorotor. The locking mechanism mainly comprises a locking drive, a locking column, a bracket, a microswitch and a compulsive drive. Both the locking drive and the compulsive drive comprise a magnet seat, a permanent magnet, an electrical pure iron ring, a suction cup, a coil and a movable column. Both ends of the locking column are respectively a locking working surface and a driving working surface, and the rotor is locked or unlocked by converting the up and down movement of the movable column to the rotation of the locking column around a rotating shaft. The locking state of the rotor is judged by separating and jointing between the contact point of the microswitch and the locking column. When the locking drive is ineffective, the compulsive drive drives the movable column of the locking drive to move and realize emergent unlocking. The locking device protects the magnetic suspension flywheel or a magnetic suspension control moment gyro system, and has the advantages of reusability, high reliability, simple structure and the like.
Description
Technical field
The present invention relates to a kind of magnetically levitated flywheel or magnetic suspension control torque gyroscope latching device; Be magnetically levitated flywheel or the magnetic suspension control torque gyroscope latching device that a kind of reusable, good reliability, power consumption are little, simple in structure, have anti-locking and emergent compulsive unlocking function, can be used as the fender guard of magnetically levitated flywheel or magnetic suspension control torque gyroscope.
Background technology
Magnetically levitated flywheel or magnetic suspension control torque gyroscope belong to long life, high precision spacecraft attitude control executing mechanism; Because magnetically levitated flywheel or magnetic suspension control torque gyroscope adopt the magnetic bearing technology; There is the gap between stator and the rotor; In the spacecraft emission process, will produce high vibration and impact, if do not take safety method, magnetically levitated flywheel or suspension control moment gyro system will be damaged.Latching device is a kind of fender guard of magnetically levitated flywheel or magnetic suspension control torque gyroscope; Can lock and release magnetically levitated flywheel or magnetic suspension control torque gyroscope latching device; Be in locking state when magnetically levitated flywheel or suspension control moment gyro system are not worked, be in released state during normal operation.Magnetically levitated flywheel or magnetic suspension control torque gyroscope transportation, store and debugging in need to magnetically levitated flywheel or magnetic suspension control torque gyroscope be locked and release.In addition, spacecraft becomes trackwork in the space, sometimes also need to magnetically levitated flywheel or magnetic suspension control torque gyroscope is locked and release.Present employed magnetically levitated flywheel or magnetic suspension control torque gyroscope latching device mainly contain latching device, pneumatic locking device, stepping motor+gear driving pair+nut and the screw drive secondary locking device based on carbon fiber composite material and aircraft cable.Based on the latching device of carbon fiber composite material and aircraft cable, adopt priming system to carry out release, its major defect is disposablely to use, priming system impact to structure when work is big, powder burning or explosion time produce pernicious gas.Though pneumatic locking device is reusable, structure is complicated, and needs source of the gas, and quality and volume are bigger, and reliability is relatively poor.Stepping motor+gear driving pair+nut and screw drive secondary locking device also can be realized repeated usage, but are made from multiple components, and complex structure and quality are bigger, have multiple movable part, so reliability is also relatively poor.Chinese patent, the disclosed technology of patent No. ZL200810119968.0 " a kind of repeatable locking device " are to adopt electromagnetic locking device, adopt the auxiliary release of spring during release, have realized repeating locking and release.The defective of this electromagnetic locking device is: when locking face and be locked between rotor coupling mechanism force or because the compression effort that structural distortion etc. produces during greater than the restoring force of release spring, the release difficulty.For smoothly release, must make locking face during locking be locked between rotor coupling mechanism force or because the compression effort that structural distortion etc. produce less than the restoring force of release spring, is not very reliable so lock.
Summary of the invention
Technology of the present invention is dealt with problems and is: overcome the deficiency of prior art, a kind of catch gear that can repeat with emergent compulsive unlocking function that has is provided, have anti-locking and emergent compulsive unlocking function, reusable, dependable performance.
Technical solution of the present invention is: a kind of reusable, locking mechanism with anti-locking and emergent compulsive unlocking function; Be made up of stationary part and motion parts two parts, it is characterized in that: stationary part comprises: the magnetic receiver of locking drive, locking permanent magnet, locking coil, support, tightening screw, locking returning spring and attaching screw; Force magnetic receiver, compulsive unlocking permanent magnet, compulsive unlocking coil, support, tightening screw, compulsive unlocking returning spring and the attaching screw and the micro-switch of actuator; Motion parts comprises: locking suction dish, compulsive unlocking suction dish, locking activity post, lock.Lock is connected with support through rotating shaft; The locking permanent magnet is bonded on the magnetic receiver with epoxide-resin glue, and the locking coil is positioned at the groove of magnetic receiver, and bonds together with epoxide-resin glue and magnetic receiver; Magnetic receiver is fixed on an end of support through attaching screw; Lock is installed in the support other end through rotating shaft, and lock one end is the locking driving surface, and the other end is the transmission driving surface.Locking suction dish is positioned at the locking drive outside and is fixed on the locking activity post; The locking returning spring is sleeved on the locking activity post and by locking suction dish and locatees; Tighten the suction dish and move up and down, lock is rotated around the shaft through the transmission driving surface that pins because of receiving suction or thrust.Micro-switch is connected with support through tightening screw, and the contact of micro-switch is in the middle part in the lock outside, judges the locking state of lock through the clutch of lock and micro-switch contact.The electric signal of micro-switch output links to each other with the input end that adds controller, and the mouth of this controller links to each other with the locking coil, forms the closed loop of electric control;
Force actuator and locking drive to be the opposite side that is installed in support with being symmetrically distributed; Form by the movable post of compulsive unlocking magnetic receiver, compulsive unlocking permanent magnet, compulsive unlocking electrical pure iron ring, compulsive unlocking suction dish, compulsive unlocking coil and compulsive unlocking, and be fixed on the support by attaching screw through the compulsive unlocking magnetic receiver.
Form the gap of 0.1～3.5mm between the magnetic pole of described locking suction dish and locking electrical pure iron ring and locking magnet base, keep locking and released state and all need not continue energising.
Form the gap of 0.1～2.5mm between the magnetic pole of the compulsive unlocking suction dish of described pressure locking drive and compulsive unlocking electrical pure iron ring and compulsive unlocking magnet base.
Described lock material is a stainless steel material, contacts to meet personally with magnetically levitated flywheel or magnetic suspension control torque gyroscope rotor for fear of lock locking driving surface the metal interlock to occur, inlays non-metallic materials such as polytetrafluoroethylene in the lock locking driving surface.
Said locking permanent magnet and the equal axial charging of compulsive unlocking permanent magnet and install about support symmetry.
When said lock contacted with the micro-switch contact, the micro-switch output signal was a high level, and rotor is a locking state; When said lock did not contact with the micro-switch contact, the micro-switch output signal was a low level, and rotor is a released state.
The principle of such scheme is: when needs are locked magnetically levitated flywheel or magnetic suspension control torque gyroscope; Locking coil 16 energisings in the locking drive 1; The magnetic direction that electric current is produced is identical with the magnetic direction that the locking permanent magnet produces; Respectively shown in solid line and dotted line among Fig. 4 (a); Dotted line is a permanent magnetic circuit, and solid line is an electromagnetic circuit, and the magnetic attraction that produces at this moment makes locking suction dish 12 overcome the motion of locking returning spring 18 and the tight movable post 17 generation z axle negative directions of mechanism's friction force pusher moving lock; When locking activity post 17 transmission driving surfaces are run into the transmission driving surface of lock 2; Locking activity post 17 vertical directions motions is promoting lock 27 rotations around the shaft makes lock 2 locking driving surfaces contact with magnetically levitated flywheel or magnetic suspension control torque gyroscope rotor, in the time of behind the radially magnetic gap of elimination rotor and axial magnetic gap, can not moving till, lock 2 contacts with micro-switch 4 contacts at this moment; Micro-switch 4 output voltages judge thus that greater than the high level signal of 3V lock 2 is in locking state.
Locking 16 current"on"times of coil are less than 5s in the locking process.Since between institute's design-calculated lock 2 locking driving surfaces and perpendicular between the locking driving surface of angle and locking activity post 17 and perpendicular angle β equate.As everyone knows, be μ if establish the friction coefficient of lock 2 and locking activity post 17, then the equivalence of 17 on lock 2 and locking activity post is arctan μ from the locking angle.When angle or angle β are not more than the friction angle of lock 2 and locking activity post 17, satisfied the condition of self-locking of mechanism, therefore utilize the latching characteristics of mechanism and the magnetic force that the locking permanent magnet provides to maintain the lock status.When needs carry out release to magnetically levitated flywheel or magnetic suspension control torque gyroscope; Locking the coil 16 logical and rightabout electric currents of locking make the magnetic field of electric current generation and the magnetic field equal and opposite in direction of locking permanent magnet generation, and are in the opposite direction; Shown in Fig. 5 (a); At this moment, locking suction dish 12 no longer receives the electromagnetic force effect, rightabout motion when locking activity post 15 vertically produces with locking under the elastic force effect of locking returning spring 18.When locking activity post 15 release driving surfaces are run into the release driving surface of lock 2; Thereby promoting lock 27 rotations around the shaft breaks away from lock 2 locking driving surfaces and magnetically levitated flywheel or magnetic suspension control torque gyroscope rotor; Up to lock 2 around the shaft 7 can not rotate the time till; This moment, lock 2 broke away from micro-switch 4 contacts, and micro-switch 4 output voltages judge thus that less than the low level signal of 1.7V lock 2 is in released state.Locking process locking coil electrify time is less than 5s.
Under locking state; When locking drive 1 lost efficacy; As shown in Figure 6; Identical with compulsive unlocking permanent magnet 54 magnetic directions to 56 energisings of the compulsive unlocking coil of compulsive unlocking actuator 5 and magnetic direction that electric current is produced, this moment, electromagnetic attraction made compulsive unlocking suction dish 52 overcome the motion that promotes the movable post 55 generation z axle positive dirctions of compulsive unlocking behind the friction force of compulsive unlocking spring 58 and mechanism.When compulsive unlocking activity post 55 approach locking activity posts 15; Impacting locking activity post 15 greater than the application force of locking drive 1 locking state confining force, thereby make locking activity post 15 produce in the opposite direction the moving of moving along the Z direction and when locking down in the elastic force effect of locking returning spring 18.When locking activity post 15 release driving surfaces are run into the release driving surface of lock 2; Thereby promoting lock 27 rotations around the shaft breaks away from the locking driving surface of lock 2 and magnetically levitated flywheel or magnetic suspension control torque gyroscope rotor; Up to lock 2 around the shaft 7 can not rotate the time till; This moment, lock 2 broke away from micro-switch 4 contacts, and micro-switch 4 output voltages are judged the released state that is in of lock 2 thus less than the low level signal of 1.7V.56 current"on"times of compulsive unlocking procedure coercion trip coil are less than 5s, the electric current when the compulsive unlocking electric current is locked greater than locking drive.
The present invention's advantage compared with prior art is: the present invention compares the repeated locking function of having realized magnetically levitated flywheel or magnetic suspension control torque gyroscope owing to adopt the self-locking of electromagnet and mechanism with disposable locking device, but repeated use.Compare with existing repeatable locking device, repeatable locking device of the present invention is simple in structure, and movable part is few; Locking and released state are monitored through micro-switch; And during release, the application force that locking activity post receives is little, has avoided the release difficult problem; Thereby reliability is high, and control is more prone to.Again owing in electromagnet, adopt permanent magnet, thereby quality, volume and the power consumption of latching device have significantly been reduced.
Description of drawings
Fig. 1 is a repeatable locking device structural representation of the present invention;
Fig. 2 is the schematic cross-section of repeatable locking device locking drive of the present invention;
Fig. 3 is the schematic cross-section of the compulsive unlocking actuator of repeatable locking device of the present invention;
Fig. 4 a is the schematic cross-section of the locking process of repeatable locking device of the present invention;
Fig. 4 b is the schematic cross-section of repeatable locking device of the present invention at locking state;
Fig. 4 c receives the schematic cross-section of responsive to axial force when being repeatable locking device locking state of the present invention;
Fig. 4 d receives the schematic cross-section of diametral load effect when being repeatable locking device locking state of the present invention;
Fig. 5 a is the schematic cross-section of repeatable locking device of the present invention in releasing process;
Fig. 5 b is repeatable locking device of the present invention stressed scheme drawing in releasing process;
Fig. 5 c is the schematic cross-section of repeatable locking device of the present invention at released state;
Fig. 6 is the schematic cross-section of repeatable locking device compulsive unlocking process of the present invention;
Fig. 7 a is a lock structural representation of the present invention;
Fig. 7 b is a lock transmission driving surface scheme drawing of the present invention;
Fig. 8 is a movable rod structure scheme drawing of the present invention;
Fig. 9 is the catch gear position view in magnetically levitated flywheel or magnetic suspension control torque gyroscope that repeats of the present invention.
The specific embodiment
As shown in Figure 1; The present invention is made up of locking drive 1, lock 2, support 3, micro-switch 4, compulsive unlocking actuator 5; Compulsive unlocking actuator 5 is a side that is installed in support 3 with locking drive 1 with being symmetrically distributed; Lock 2 is installed in support 3 opposite sides through rotating shaft 7, and lock 2 one ends are the locking driving surface, and the other end is the transmission driving surface; Micro-switch 4 is connected with support 3 through tightening screw 6, and the contact of micro-switch 4 is in the outer middle side part of lock 2, can guarantee that lock 2 is in contact with it when locking state, judges the locking state of lock through the clutch of lock and micro-switch contact.
As shown in Figure 2, locking drive 1 is made up of locking magnetic receiver 15, corrosion-resistant steel antirust sleeve 19, locking permanent magnet 14, locking electrical pure iron ring 13, locking suction dish 12, locking coil 16, locking activity post 17, locking suction dish 12, locking returning spring 18 and captive nut 11 and corrosion-resistant steel antirust sleeve 19.Corrosion-resistant steel antirust sleeve 19 by the interference mount locking magnetic receiver 15 endoporus in; The one side of locking permanent magnet 14 is bonded on the annular end face of the circular groove outer wall of locking magnetic receiver 15; 13 on locking electrical pure iron ring is bonded on the another side of locking permanent magnet 14, and locking coil 16 is fixed in the circular groove of locking magnetic receiver 15.Locking suction dish 12 is installed on the locking activity post 17 through captive nut 11.18 of returning springs of locking are installed in by in locking magnetic receiver 15 and the locking activity post 17 formed circular grooves.Locking suction dish 12 is the working clearance of locking drive 1 with the formed gap of circular groove inwall end face of locking electrical pure iron ring 13 and locking magnetic receiver 15.Corrosion-resistant steel antirust sleeve 19 and 17 on locking activity post are joined the 0.1mm gap so that locking activity post 17 can be along Z to crank motion in corrosion-resistant steel antirust sleeve 19 holes, and the working clearance is 0.1mm when making locking drive 1 locking, is 3.5mm during release.
19 interference of corrosion-resistant steel antirust sleeve are assemblied on the locking magnetic receiver 15, and corrosion-resistant steel antirust sleeve 19 and 17 on locking activity post are joined the 0.1mm gap so that locking activity post 17 can be along Z to crank motion.Locking suction dish 12 is 0.1～3.5mm with the magnetic gap of locking electrical pure iron ring 13 and locking magnet base 15; Locking activity post 17 can only be realized horizontal Z-direction motion with locking suction dish 12 in locking magnetic receiver 15 centre holes, shown in the Z-direction among Fig. 2.
As shown in Figure 3, compulsive unlocking actuator 5 is made up of compulsive unlocking magnetic receiver 55, compulsive unlocking permanent magnet 54, compulsive unlocking electrical pure iron ring 53, compulsive unlocking suction dish 52, compulsive unlocking coil 56, the movable post 57 of compulsive unlocking and compulsive unlocking returning spring 58 and compulsive unlocking corrosion-resistant steel antirust sleeve 59.
Compulsive unlocking corrosion-resistant steel antirust sleeve 59 through the interference mount in the endoporus of compulsive unlocking magnetic receiver 55; The one side of compulsive unlocking permanent magnet 54 is bonded on the annular end face of circular groove outer wall of compulsive unlocking magnetic receiver 55; 53 on compulsive unlocking electrical pure iron ring is bonded on the another side of compulsive unlocking permanent magnet 54, and compulsive unlocking coil 56 is fixed in the circular groove of compulsive unlocking magnetic receiver 55.Compulsive unlocking suction dish 52 is installed on the movable post 57 of compulsive unlocking through compulsive unlocking captive nut 51.58 of compulsive unlocking returning springs are installed in by in the movable post 57 formed circular grooves of compulsive unlocking magnetic receiver 55 and compulsive unlocking.Compulsive unlocking suction dish 52 is the working clearance of compulsive unlocking actuator 5 with the formed gap of circular groove inwall end face of compulsive unlocking electrical pure iron ring 53 and compulsive unlocking magnetic receiver 55.Movable 57 on the post of compulsive unlocking corrosion-resistant steel antirust sleeve 59 and compulsive unlocking is joined the 0.1mm gap so that the movable post 57 of compulsive unlocking can be 0.1mm along Z working clearance when crank motion makes compulsive unlocking actuator 5 compulsive unlockings, is 2.5mm when not having compulsive unlocking.
Fig. 4 (a) is the schematic cross-section of the locking process of repeatable locking device of the present invention.When needing locking, give the locking coil 16 galvanizations, the magnetic direction that electric current is produced is identical with the magnetic direction that locking permanent magnet 14 produces, shown in solid line and dotted line among Fig. 4 (a).Locking suction dish 12 overcomes the spring force and the friction force of locking returning spring 18 under magnetic action; Promote locking activity post 17 vertical motions; When the transmission driving surface of locking activity post 17 is run into the transmission driving surface of lock 2; Thereby promoting lock 27 rotations around the shaft makes lock 2 locking driving surfaces contact with magnetically levitated flywheel or magnetic suspension control torque gyroscope rotor; Till in the time of behind the radially magnetic gap of eliminating rotor and axial magnetic gap, can not moving, lock process electromagnet current"on"time less than 5s.The latching characteristics between outage then, the locking driving face that utilizes lock 2 and the locking driving face of movable post and the magnetic force of locking permanent magnet 14 generations maintain the lock status.
Fig. 4 (b) is the schematic cross-section of repeatable locking device of the present invention at locking state.At locking state; The transmission driving surface of locking activity post 17 contacts with the transmission driving surface of lock 2; The 12 magnetic force F3 effects because of locking permanent magnet 14 of locking suction dish are keeping the trend of approach locking electrical pure iron ring 13 always; Thereby eliminated the gap that possibly occur between lock 2 and magnetically levitated flywheel or magnetic suspension control torque gyroscope rotor, realized the function that maintains the lock status.
Fig. 4 (c) receives the schematic cross-section of responsive to axial force during for repeatable locking device locking state of the present invention.As shown in the figure, under locking state, keeping magnetic force F3 between locking suction dish 12 and the locking permanent magnet 14 always.When the power F1 that receives when lock 2 locking driving surfaces was axial force, rotating shaft 7 will be through 3 pairs of locks of support, 2 generation equal and opposite in directions, antagonistic force F2 in the opposite direction, and the application force that locking activity post 17 receives is very little.The power that when the suffered power of lock 2 locking driving surfaces disappears, then acts on the support disappears, and locking activity post does not stress.
Fig. 4 (d) receives the schematic cross-section of diametral load effect during for repeatable locking device locking state of the present invention.As shown in the figure, under locking state, keeping magnetic force F3 between locking suction dish 12 and the locking permanent magnet 14 always.When axial, 3 pairs of locking activities of support post 17 produces directed force F 2 to the power F1 that receives when lock 2 locking driving surfaces perpendicular to lock.And F2 is that fulcrum and F1 realize moment balance with rotating shaft 7 then.When the directed force F 1 that acts on lock 2 locking driving surfaces disappeared, the directed force F 2 that acts on the locking activity post 17 also disappeared.In order to prevent that the metal interlock from appearring in lock 2 locking driving surfaces and flywheel locking face, lock 2 materials are corrosion-resistant steel, and lock locking driving surface material is the non-metallic material polytetrafluoroethylene.
Fig. 5 (a) is the schematic cross-section of repeatable locking device of the present invention in releasing process; The electromagnet portion of locking and release is made up of permanent magnetic circuit and electromagnetic circuit two parts; Permanent magnet flux is opposite with the electromagnetism flow direction, and under the thrust of locking returning spring 18, locking activity post 17 moves downward along the contact surface with support 3; Contact with lock 2 thereby make the locking activity live 17, realized that locking activity post 17 and pinning 2 carry out the transmission of power.Fig. 5 (b) is repeatable locking device of the present invention stressed scheme drawing in releasing process.When needs carry out release to magnetically levitated flywheel or magnetic suspension control torque gyroscope, locking coil 16 logical with the rightabout electric currents of locking, make the magnetic field equal and opposite in direction of magnetic field that electric current produces and locking permanent magnet 14, in the opposite direction.At this moment, locking suction dish no longer receives the electromagnetic force effect, rightabout motion when locking activity post 17 vertically produces with locking under the elastic force F4 effect of locking returning spring 18.When the release driving surface of locking activity post 17 is run into the release driving surface of lock 2; Thereby 7 rotations around the shaft of application force f promotion lock 2 produce moment M breaks away from lock 2 locking driving surfaces and magnetically levitated flywheel or magnetic suspension control torque gyroscope rotor; Till when lock can not rotate around the shaft, realized release.
Fig. 5 (c) is the schematic cross-section of repeatable locking device of the present invention at released state; Locking suction dish 12 makes locking suction dish 12 away from locking electrical pure iron ring 13 by the elastic force effect of returning spring 18; The release driving surface of locking activity post 17 contacts with the release driving surface of lock 2; And the lock driving end is spacing in the morpheme groove of locking activity post 17, realize unlocking function and keep released state.
Locking can detect through micro-switch 4 with released state, and when the contact of lock 2 with micro-switch 4 contact, Fig. 5 (c) is middle to justify interior part, and micro-switch 4 when being output as high level then latching device be in locking state.As lock 2 do not contact with the contact of micro-switch 4 or the contact contacted but micro-switch 4 when being output as high level then latching device be in released state.
When locking drive 1 et out of order lost efficacy, as shown in Figure 6, compulsive unlocking actuator 5 drove movable post 57 motions of compulsive unlocking and moves the realization emergent compulsive unlocking to force to promote locking activity post 17 greater than the directed force F 5 of locking state confining force.
Fig. 7 (a)-Fig. 7 (b) is the structural representation of lock 2 of the present invention; Its function is the locking that realizes flywheel rotor, and material is 1Cr18Ni9Ti, 40Cr; Stainless steel metal materials such as 2Cr13; Transmission driving surface angle is selected according to the friction angle between lock 2 and locking activity post 17 and lock 2 and the support 3, should be not more than the friction angle sum between lock 2 and locking activity post 17 and lock 2 and the support 3, promptly less than 23 °.
Fig. 8 is the structural representation of locking activity post 17 of the present invention; Its function be effect that the z direction of principal axis with locking activity post 17 moves through transmission driving surface or release driving surface be converted into the rotation of lock 2 and force transmission that lock 2 locking faces are received to support 3, angle β equates with angle.
Used locking magnetic receiver 15, compulsive unlocking magnetic receiver 25, locking suction dish 12, the compulsive unlocking suction dish 52 of the invention described above all used the good electrical pure iron of magnetic property; The material of locking permanent magnet 14, compulsive unlocking permanent magnet 54 is the good rare-earth permanent magnet of magnetic property or ferrite permanent magnet and is axial charging; Locking coil 16, compulsive unlocking coil 56 usefulness conduct electricity that paint-dipping drying forms after the good electromagnetic wire coiling; Lock 2 is the stainless steel metal material with locking activity post 17, the movable post 57 of compulsive unlocking.
When concrete the application, 3 or 4 parallel connections of repeatable locking device needs of the present invention are distributed on the circumferencial direction of magnetically levitated flywheel or magnetic suspension control torque gyroscope rotor and realize locking and unlocking function to magnetically levitated flywheel or magnetic suspension control torque gyroscope.Fig. 9 is the catch gear position view in magnetically levitated flywheel or magnetic suspension control torque gyroscope that repeats of the present invention; 3 or 4 can be repeated catch gear 101 and be fixed on the base 102; The circumferencial direction that is distributed on flywheel rotor 103 is to magnetically levitated flywheel or magnetic suspension control torque gyroscope is locked or release, realizes the defencive function to magnetically levitated flywheel or suspension control moment gyro system.
The content of not doing in the specification sheets of the present invention to describe in detail belongs to this area professional and technical personnel's known prior art.
The above only is a preferred implementation of the present invention; Should be pointed out that for those skilled in the art, under the prerequisite that does not break away from the principle of the invention; Can also make some improvement and retouching, these improvement and retouching also should be regarded as protection scope of the present invention.
Claims (6)
1. locking mechanism that can repeat and have emergent compulsive unlocking function; Be made up of stationary part and motion parts two parts, it is characterized in that: stationary part comprises: the locking magnetic receiver (15) of locking drive (1), locking permanent magnet (14), locking coil (16), support (3), tightening screw (8) and returning spring (18); The magnetic receiver (55) of compulsive unlocking actuator (5), compulsive unlocking permanent magnet (54), compulsive unlocking coil (56), compulsive unlocking returning spring (58), rotating shaft (7), micro-switch (4) and fix screw (6); Motion parts comprises: the movable post (17) of the locking suction dish (12) of locking drive (1), the compulsive unlocking suction dish (52) of compulsive unlocking actuator (5), locking drive (1), the movable post (55) of the compulsive unlocking of compulsive unlocking actuator (5), lock (2); Locking permanent magnet (14) is on locking magnetic receiver (15); Locking coil (16) is positioned at the groove of locking magnetic receiver (15); And bond together with locking magnetic receiver (15), locking magnetic receiver (15) is fixed on the upside of support (3) through attaching screw (8); Lock (2) is installed in the support other end through rotating shaft (7), and lock (2) one ends are the locking driving surface, and the other end is the transmission driving surface; Locking suction dish (12) is in the outside of locking drive (1) and is fixed on the movable post (17); Returning spring (18) is installed in that movable post (17) is gone up and by locking suction dish (12) location, locking suction dish (12) moves up and down because of receiving suction or thrust, and the transmission driving surface through lock (2) changes into lock (2) rotatablely moving of (7) around the shaft; Micro-switch (4) is connected with support (3) through tightening screw (6), and the contact of micro-switch (4) is in the outer middle side part of lock (2), can guarantee that lock (2) is in contact with it when vibration, judges the locking state of lock through the clutch of lock and micro-switch contact;
Compulsive unlocking actuator (5) is the opposite side that is installed in support (3) with locking drive (1) with being symmetrically distributed; Compulsive unlocking permanent magnet (54) is bonded on the compulsive unlocking magnetic receiver (55); Compulsive unlocking coil (56) is positioned at the groove of compulsive unlocking magnetic receiver (55); And bond together the downside that is fixed on support (3) that compulsive unlocking magnetic receiver (55) is symmetrically distributed through attaching screw (8) and locking magnetic receiver (15) with compulsive unlocking magnetic receiver (55); Compulsive unlocking suction dish (52) is in the outside of compulsive unlocking actuator (5) and is fixed on the movable post of compulsive unlocking (57); Compulsive unlocking returning spring (58) is installed in the movable post of compulsive unlocking (57) and goes up and located by compulsive unlocking suction dish (52), and compulsive unlocking suction dish (52) moves up and down because of receiving suction or thrust.
2. a kind of catch gear that repeats with emergent compulsive unlocking function according to claim 1; It is characterized in that: form the gap of 0.1～3.5mm between the magnetic pole of described locking suction dish (12) and locking electrical pure iron ring (13) and locking magnet base (15), keep locking and released state and all need not continue energising.
3. a kind of catch gear that repeats with emergent compulsive unlocking function according to claim 1 is characterized in that: the gap that forms 0.1～2.5mm between the magnetic pole of the compulsive unlocking suction dish (52) of described compulsive unlocking actuator (5) and compulsive unlocking electrical pure iron ring (53) and compulsive unlocking magnet base (55).
4. a kind of catch gear that repeats with emergent compulsive unlocking function according to claim 1, it is characterized in that: described lock (2) material is a stainless steel material, inlays the polytetrafluoroethylene non-metallic material in lock (2) the locking driving surface.
5. a kind of catch gear that repeats with emergent compulsive unlocking function according to claim 1 is characterized in that: said locking permanent magnet (14) and compulsive unlocking permanent magnet (54) be axial charging and install about the support symmetry all.
6. a kind of catch gear that repeats with emergent compulsive unlocking function according to claim 1 is characterized in that: said lock (2) and micro-switch (4) are when the contact contacts, and the micro-switch output signal is a high level, and rotor is a locking state; When said lock (2) did not contact with micro-switch (4) contact, the micro-switch output signal was a low level, and rotor is a released state.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009100931549A CN101670891B (en) | 2009-09-25 | 2009-09-25 | Locking mechanism with repeatable and emergent compulsive unlocking function |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009100931549A CN101670891B (en) | 2009-09-25 | 2009-09-25 | Locking mechanism with repeatable and emergent compulsive unlocking function |
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| CN101670891A CN101670891A (en) | 2010-03-17 |
| CN101670891B true CN101670891B (en) | 2012-05-23 |
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| CN2009100931549A Expired - Fee Related CN101670891B (en) | 2009-09-25 | 2009-09-25 | Locking mechanism with repeatable and emergent compulsive unlocking function |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102530268A (en) * | 2011-08-02 | 2012-07-04 | 中国人民解放军国防科学技术大学 | Air bag type flywheel locking and unlocking device |
| CN102829784B (en) * | 2012-08-22 | 2015-04-29 | 北京航空航天大学 | Manual operation-automation-locking switching mechanism of inertially stabilized platform |
| CN103029850B (en) * | 2012-12-11 | 2015-07-08 | 北京兴华机械厂 | Gear locking mechanism for magnetic suspension flywheel |
| CN103089761B (en) * | 2012-12-26 | 2015-08-19 | 北京兴华机械厂 | A kind of magnetic suspension control torque gyroscope can repeat locking method and device |
| CN104097792B (en) * | 2014-07-29 | 2016-10-05 | 北京卫星环境工程研究所 | Launch the Electromagnetic Solution lock construction of operation for spacecraft detection equipment mechanism in-orbit |
| CN104309821A (en) * | 2014-09-29 | 2015-01-28 | 北京石油化工学院 | Repeatable maglev flywheel locking device |
| CN104477401B (en) * | 2014-10-30 | 2017-01-18 | 北京兴华机械厂 | Magnetic-levitation flywheel rotor magnetic assembly mechanism |
| CN104535102B (en) * | 2015-01-15 | 2017-01-04 | 北京航空航天大学 | A kind of biaxial stabilization tracking platform orientation framework machinery-electromagnetic locking conversion equipment |
| CN106300881A (en) * | 2015-06-01 | 2017-01-04 | 北京卫星环境工程研究所 | Spacecraft separator based on electromagnetic force |
| CN108626209B (en) * | 2018-04-27 | 2020-06-12 | 湖北三江航天万峰科技发展有限公司 | Electromagnetic elastic locking device |
| CN111140521B (en) * | 2019-12-16 | 2020-11-24 | 珠海格力电器股份有限公司 | Magnetic suspension compressor main shaft limiting protection device and bearing rotor system |
| CN113479352B (en) * | 2021-05-25 | 2023-03-31 | 北京控制工程研究所 | Drive control method and system of anti-backlash locking mechanism for space spacecraft |
| CN113895654B (en) * | 2021-10-27 | 2023-08-04 | 北京航空航天大学宁波创新研究院 | Magnetic suspension inertial actuating mechanism locking device based on magnetostriction shape memory structure |
-
2009
- 2009-09-25 CN CN2009100931549A patent/CN101670891B/en not_active Expired - Fee Related
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| Publication number | Publication date |
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| CN101670891A (en) | 2010-03-17 |
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