CN111030362B - Locking mechanism and magnetic suspension system with same - Google Patents
Locking mechanism and magnetic suspension system with same Download PDFInfo
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- CN111030362B CN111030362B CN201911191836.3A CN201911191836A CN111030362B CN 111030362 B CN111030362 B CN 111030362B CN 201911191836 A CN201911191836 A CN 201911191836A CN 111030362 B CN111030362 B CN 111030362B
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- locking
- supporting seat
- annular supporting
- locking part
- locking mechanism
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
- H02K7/003—Couplings; Details of shafts
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02N—ELECTRIC MACHINES NOT OTHERWISE PROVIDED FOR
- H02N15/00—Holding or levitation devices using magnetic attraction or repulsion, not otherwise provided for
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- Combustion & Propulsion (AREA)
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Abstract
The application provides a locking mechanism, which comprises an annular supporting seat and a locking part, wherein the annular supporting seat is sleeved outside a part to be locked; and the locking portion moves in the radial direction of the annular support seat to lock or release the member to be locked. According to the locking mechanism, when the magnetic suspension system is in a power-off state, the free movement of the spindle can be limited, so that the spindle cannot collide with the ball bearing, the service life of the ball bearing is prolonged, and the reliability of the magnetic suspension system is improved.
Description
Technical Field
The application belongs to the technical field of magnetic suspension, and particularly relates to a locking mechanism and a magnetic suspension system with the same.
Background
At present, a magnetic suspension system is composed of an optical axis, a radial displacement sensor, a radial bearing, a motor rotor, an axial bearing iron core, an axial bearing coil, a thrust disc and an axial displacement sensor. The protection mechanism of the radial bearing is a ball bearing, does not work when the magnetic suspension system operates stably, and only plays a role in supporting the main shaft when the system is unstable and stops, so that the main shaft is prevented from being collided and damaged when rotating at a high speed. Because the magnetic suspension main shaft has high rotating speed and large mass, the bearing can be damaged to different degrees when colliding with the ball bearing, and once the ball bearing is damaged, the ball bearing needs to be replaced, otherwise, the safe operation of the magnetic suspension system can be influenced, and therefore the ball bearing plays a key role in the reliability of the magnetic suspension system.
However, when the magnetic suspension system is in a power-off state, because the bearing protection gap exists and the main shaft is not provided with a mechanical fixing device, the main shaft can move freely within a certain range, and if the main shaft is subjected to an external force action, such as bumping of a carrying tool in transportation, the main shaft and the ball bearing collide, so that the service life of the ball bearing is shortened, and the reliability of the magnetic suspension system is reduced.
Therefore, how to provide a locking mechanism capable of limiting the free motion of the spindle when the magnetic suspension system is in a power-off state, so that the spindle does not collide with the ball bearing, the service life of the ball bearing is prolonged, and the reliability of the magnetic suspension system is improved, and the magnetic suspension system with the locking mechanism becomes a problem which needs to be solved by technicians in the field.
Disclosure of Invention
Therefore, the technical problem to be solved by the application is to provide a locking mechanism and a magnetic suspension system with the same, which can limit the free movement of a spindle when the magnetic suspension system is in a power-off state, so that the spindle does not collide with a ball bearing, the service life of the ball bearing is prolonged, and the reliability of the magnetic suspension system is improved.
In order to solve the above problem, the present application provides a lock mechanism including:
the annular supporting seat is sleeved outside the part to be locked;
and the locking part moves in the radial direction of the annular supporting seat to lock or release the part to be locked.
Preferably, the locking part includes a locking member and a moving member; the moving part is connected with the locking part;
and/or, the locking mechanism also comprises a driving device; the driving device is connected with the locking part; the driving device is used for driving the locking part to move in the radial direction of the annular supporting seat;
and/or the locking parts are arranged in a plurality of numbers, and the locking parts are arranged circumferentially around the central axis of the annular supporting seat.
Preferably, a radial guide is arranged on the first end surface of the annular supporting seat; the moving piece is arranged in the radial guide piece; and the moving piece moves in the radial guide piece to drive the locking piece to move in the radial direction of the annular supporting seat, and then the part to be locked is locked or released.
Preferably, the locking mechanism further comprises a threaded adjustment; the thread adjusting part is in threaded connection with the locking part; the driving device is connected with the thread adjusting part; the driving device drives the thread adjusting part to rotate so that the locking part moves in the radial direction of the annular supporting seat.
Preferably, the thread adjusting part is provided with an external thread; the locking part is provided with a thread groove matched with the external thread; the thread groove extends along the radial direction of the annular supporting seat;
and/or the thread adjusting part is a screw rod, and the first end of the screw rod is in threaded connection with the locking part; the second end of the screw is connected with a driving device.
Preferably, the locking part comprises a driving locking part and a driven locking part; the driving locking part and the driven locking part can move in the radial direction of the annular supporting seat; the driving device is used for driving the active locking part to move in the radial direction of the annular supporting seat; the initiative locking portion radially removes at annular supporting seat, drives driven locking portion and radially removes at annular supporting seat.
Preferably, the locking mechanism further comprises a transmission; the transmission device is connected with the driving locking part and the driven locking part; the driving locking part moves in the radial direction of the annular supporting seat to drive the transmission device to operate, and then the driven locking part is driven to move in the radial direction of the annular supporting seat.
Preferably, the transmission comprises a transmission ring; the transmission ring is sleeved on the annular supporting seat; the driven locking part and the driving locking part are both connected with the transmission ring; the transmission ring can rotate around the central axis in the circumferential direction; the driving locking device moves in the radial direction of the annular supporting seat to drive the transmission ring to rotate, and then the driven locking portion is driven to move in the radial direction of the annular supporting seat.
Preferably, the transmission device further comprises a transmission rod; the first end of the transmission rod is connected to the transmission ring, and the second end of the transmission rod is connected to the locking part;
and/or the active locking parts are arranged to be one; the driven locking parts are provided in plurality; the driven locking parts and the driving locking parts are arranged circumferentially around the central axis of the annular supporting seat.
Preferably, the first end of the transmission rod is provided with a first steering ball; a first spherical groove is formed in the inner peripheral wall of the transmission ring; the first steering ball is rotatably arranged in the first spherical groove;
and/or a second steering ball is arranged at the second end of the transmission rod; the locking part is provided with a second spherical groove; the second steering ball is rotatably arranged in the second spherical groove.
Preferably, the outer circumferential wall of the annular supporting seat is provided with an annular guide piece which is circumferentially arranged around the central axis of the annular supporting seat; the drive ring is rotatably mounted on the annular guide member.
Preferably, the surface of the locking piece close to the central axis of the annular supporting seat is a locking surface, and the locking surface is an arc-shaped surface;
and/or, the inner peripheral wall of the transmission ring is provided with a stop surface; the stop surface is perpendicular to the central axis of the annular supporting seat and faces the direction of the first end surface of the annular supporting seat; the annular guide member is disposed on the stop surface.
Preferably, the joint of the surface of the locking member far away from the annular supporting seat and the locking surface is of a chamfer structure.
According to still another aspect of the present application, there is provided a magnetic levitation system, comprising a locking mechanism, wherein the locking mechanism is the above-mentioned locking mechanism.
Preferably, the first end of the screw rod is in threaded connection with the locking part; the second end of the screw rod extends to the outside of the shell of the magnetic suspension system;
and/or, a sealing ring is sleeved on the screw rod; and a rotary sealing structure is formed among the sealing ring, the screw and the shell of the magnetic suspension system.
The application provides a locking mechanism and have its magnetic suspension system can be when the magnetic suspension system is in the outage state, the free motion of restriction main shaft for the main shaft can not collide with ball bearing, improves ball bearing's life, increases magnetic suspension system's reliability.
Drawings
FIG. 1 is a schematic structural diagram of a locking mechanism according to an embodiment of the present application;
FIG. 2 is a schematic structural diagram of a locking portion according to an embodiment of the present application;
FIG. 3 is a schematic structural view of an annular support seat according to an embodiment of the present application;
FIG. 4 is a schematic structural view of a transmission rod according to an embodiment of the present application;
FIG. 5 is a schematic view of a drive ring according to an embodiment of the present application;
FIG. 6 is a schematic structural view of a threaded adjustment portion according to an embodiment of the present application;
fig. 7 is a schematic structural diagram of a sealing member according to an embodiment of the present application.
The reference numerals are represented as:
1. an annular supporting seat; 11. a radial guide rail; 12. an annular guide member; 2. a locking portion; 21. a locking member; 22. a moving member; 23. a second spherical recess; 3. a screw adjustment portion; 31. a seal ring; 4. a drive ring; 41. a stop surface; 42. a first spherical recess; 51. a transmission rod; 521. a first steering ball; 522. a second steering ball.
Detailed Description
Referring collectively to fig. 1, in accordance with an embodiment of the present application, a locking mechanism comprises: the locking device comprises an annular supporting seat 1 and a locking part 2, wherein the annular supporting seat 1 is sleeved outside a part to be locked; the locking part 2 moves in the radial direction of the annular supporting seat 1 to lock or release a part to be locked, and can limit the free motion of the spindle when the magnetic suspension system is in a power-off state, so that the spindle cannot collide with the ball bearing, the service life of the ball bearing is prolonged, and the reliability of the magnetic suspension system is improved.
Referring to fig. 2 in combination, the present application also discloses embodiments in which the locking part 2 includes a locking member 21 and a moving member 22; the moving piece 22 is connected with the locking piece 21;
and/or, the locking mechanism also comprises a driving device; the driving device is connected with the locking part 2; the driving device is used for driving the locking part 2 to move in the radial direction of the annular supporting seat 1;
and/or, the locking part 2 is arranged in a plurality of numbers, and the locking parts 2 are arranged circumferentially around the central axis of the annular supporting seat 1.
Referring to fig. 3 in combination, the present application also discloses some embodiments, a radial guide 11 is disposed on the first end surface of the annular supporting seat 1; the moving member 22 is disposed in the radial guide rail 11; and the moving piece 22 moves in the radial guide 11 to drive the locking piece 21 to move in the radial direction on the annular supporting seat 1, so as to lock or release the part to be locked.
Further, the locking mechanism further comprises a threaded adjustment portion 3; the thread adjusting part 3 is in threaded connection with the locking part 2; the driving device is connected with the thread adjusting part 3; the driving device drives the thread adjusting part 3 to rotate so that the locking part 2 moves in the radial direction of the annular supporting seat 1, and when the magnetic suspension system is in a power-off state, the driving device drives the thread adjusting part 3 to rotate in the forward direction so that the locking part 2 moves in the direction close to the central axis of the annular supporting seat 1, and then a main shaft of the magnetic suspension system is locked; when the main shaft of the magnetic suspension system is not required to be locked, the driving device drives the thread adjusting part 3 to rotate reversely, so that the locking part 2 moves towards the direction far away from the central axis of the annular supporting seat 1, and the main shaft is released.
Further, the thread adjusting part 3 is provided with an external thread; a thread groove matched with the external thread is arranged on the locking part 2; the thread groove extends along the radial direction of the annular supporting seat 1;
and/or the thread adjusting part 3 is a screw rod, and the first end of the screw rod is in threaded connection with the locking part 2; the second end of the screw is connected with a driving device.
Further, the locking part 2 comprises a driving locking part and a driven locking part; the driving locking part and the driven locking part can move in the radial direction of the annular supporting seat 1; the driving device is used for driving the active locking part to move in the radial direction of the annular supporting seat 1; the initiative locking portion radially removes at annular supporting seat 1, drives driven locking portion and radially removes at annular supporting seat 1.
Further, the locking mechanism also comprises a transmission device; the transmission device is connected with the driving locking part and the driven locking part; the initiative locking portion radially moves at annular supporting seat 1, drives transmission operation, and then drives driven locking portion radially to move at annular supporting seat 1.
Further, the transmission comprises a transmission ring 4; the transmission ring 4 is sleeved on the annular supporting seat 1; the driven locking part and the driving locking part are both connected with the transmission ring 4; the transmission ring 4 can rotate circumferentially around the central axis; the driving locking device moves in the radial direction of the annular supporting seat 1 to drive the transmission ring 4 to rotate, and then the driven locking part is driven to move in the radial direction of the annular supporting seat 1.
Further, the transmission device further includes a transmission rod 51; the first end of the transmission rod 51 is connected to the transmission ring 4, and the second end is connected to the locking part 2;
and/or the active locking parts are arranged to be one; the driven locking parts are provided in plurality; the plurality of driven locking parts and the plurality of driving locking parts are circumferentially arranged around the central axis of the annular supporting seat 1, when the magnetic suspension system is in a power-off state and needs to be locked, the driving device drives the thread adjusting part 3 to rotate in the positive direction, so that the driving locking part moves towards the direction close to the central axis of the annular supporting seat 1; meanwhile, the driving locking part moves to drive the transmission rod 51 to move, so as to drive the driven locking part to move in the radial direction and move in the direction close to the central axis of the annular supporting seat 1; and then the driving locking part is matched with the driven locking part together to lock the main shaft. When the magnetic suspension system is not required to be locked, the driving device drives the thread adjusting part 3 to rotate reversely, so that the active locking part moves towards the direction far away from the central axis of the annular supporting seat 1, and the active locking part releases the main shaft; meanwhile, the driving locking part moves to drive the transmission rod 51 to move, so as to drive the driven locking part to move in the radial direction and move in the direction far away from the central axis of the annular supporting seat 1; and then the driving locking part and the driven locking part release the main shaft.
Further, the dimensions of the annular support seat 1 and the locking portion 2 can be adjusted according to the dimensions of the spindle.
Furthermore, the locking mechanism further comprises a limiting piece, and the limiting piece limits and fixes the transmission rod and/or the locking part.
Further, the top end of the radial guide 11 is provided with a stopper for preventing the transmission rod 51 from being separated from the radial guide 11 and also preventing the locking part from slipping off.
Referring to fig. 4 in combination, the present application also discloses embodiments wherein the first end of the transmission rod 51 is provided with a first steering ball 521; the inner peripheral wall of the transmission ring 4 is provided with a first spherical groove 42; the first steering ball 521 is rotatably disposed in the first spherical groove 42;
and/or the second end of the transmission rod 51 is provided with a second steering ball 522; the locking part 2 is provided with a second spherical groove 23; the second steering ball 522 is rotatably disposed in the second spherical recess 23.
Referring to fig. 3 in combination, the present application also discloses some embodiments, the outer circumferential wall of the annular supporting seat 1 is provided with an annular guide 12 circumferentially arranged around the central axis of the annular supporting seat 1; the drive ring 4 is rotatably mounted on the annular guide 12.
Referring to fig. 5 in combination, the present application also discloses embodiments, the surface of the locking member 21 near the central axis of the annular supporting seat 1 is a locking surface, and the locking surface is an arc surface;
and/or, the inner peripheral wall of the transmission ring 4 is provided with a stop surface 41; the stop surface 41 is perpendicular to the central axis of the annular supporting seat 1, and the stop surface 41 faces the direction of the first end surface of the annular supporting seat 1; the annular guide 12 is arranged on the stop face 41.
Further, the surface of retaining member 21, far away from annular supporting seat 1, is the chamfer structure with the junction of locking surface, and in the assembling process of magnetic suspension system, because electric motor rotor magnetism is stronger, can produce suction between main shaft and the motor stator and lead to the main shaft skew when going into the axle, the locking mechanism who adopts this application can play the effect of supplementary direction, makes things convenient for the main shaft to continue to pack into, greatly reduced the assembly degree of difficulty.
According to an embodiment of the application, a magnetic suspension system comprises a locking mechanism, wherein the locking mechanism is the locking mechanism.
Further, the magnetic levitation system comprises a magnetic levitation system body; the magnetic suspension system main body comprises a rotating shaft; the annular supporting seat 1 is sleeved outside the rotating shaft.
Further, the magnetic levitation system further comprises a housing; the magnetic suspension system main body is arranged in the shell; the annular supporting seat 1 is arranged in the shell and is fixedly connected with the shell.
Referring to fig. 6 in combination, the present application also discloses embodiments in which the first end of the threaded rod is threadedly coupled to the locking portion 2; the second end of screw rod extends to outside the casing, can set up actuating mechanism in outside the casing, more makes things convenient for drive screw rod's rotation, is convenient for lock or release main shaft.
Referring to fig. 7 in combination, the present application also discloses some embodiments, a seal ring 31 is sleeved on the screw rod; and a rotary sealing structure is formed among the sealing ring 31, the screw and the shell, so that the influence on a magnetic suspension system is prevented.
It is readily understood by a person skilled in the art that the advantageous ways described above can be freely combined, superimposed without conflict.
The present invention is not intended to be limited to the particular embodiments shown and described, but is to be accorded the widest scope consistent with the principles and novel features herein disclosed. The foregoing is only a preferred embodiment of the present application, and it should be noted that, for those skilled in the art, several modifications and variations can be made without departing from the technical principle of the present application, and these modifications and variations should also be considered as the protection scope of the present application.
Claims (12)
1. A locking mechanism, comprising:
the locking device comprises an annular supporting seat (1), wherein the annular supporting seat (1) is sleeved outside a part to be locked;
a locking part (2), wherein the locking part (2) can move in the radial direction of the annular supporting seat (1) to lock or release the component to be locked;
the locking part (2) comprises a driving locking part and a driven locking part; the locking mechanism further comprises a transmission device; the transmission comprises a transmission ring (4); the transmission ring (4) is sleeved on the annular supporting seat (1); the driven locking part and the driving locking part are connected with the transmission ring (4); the transmission ring (4) can rotate circumferentially around the central axis of the annular supporting seat (1); the driving locking part moves in the radial direction of the annular supporting seat (1) to drive the transmission ring (4) to rotate, and then the driven locking part is driven to move in the radial direction of the annular supporting seat (1);
the transmission device also comprises a transmission rod (51); a first steering ball (521) is arranged at the first end of the transmission rod (51); a first spherical groove (42) is formed in the inner peripheral wall of the transmission ring (4); the first steering ball (521) is rotatably arranged in the first spherical groove (42);
a second end of the transmission rod (51) is provided with a second steering ball (522); a second spherical groove (23) is formed in the locking part (2); the second steering ball (522) is rotatably disposed in the second spherical recess (23).
2. The locking mechanism according to claim 1, characterized in that the locking portion (2) comprises a locking member (21) and a moving member (22); the moving piece (22) is connected with the locking piece (21);
and/or, the locking mechanism further comprises a driving device; the driving device is connected with the locking part (2); the driving device is used for driving the locking part (2) to move in the radial direction of the annular supporting seat (1);
and/or, the locking parts (2) are arranged in a plurality of numbers, and the locking parts (2) are circumferentially arranged around the central axis of the annular supporting seat (1).
3. Locking mechanism according to claim 2, wherein the annular support (1) is provided with radial guides (11) on a first end face; the moving part (22) is arranged in the radial guide rail (11); and the moving piece (22) moves in the radial guide rail (11) to drive the locking piece (21) to move in the radial direction of the annular supporting seat (1), so as to lock or release the part to be locked.
4. Locking mechanism according to claim 2, characterized in that it further comprises a threaded adjustment part (3); the thread adjusting part (3) is in threaded connection with the locking part (2); the driving device is connected with the thread adjusting part (3); the driving device drives the thread adjusting part (3) to rotate so that the locking part (2) moves in the radial direction of the annular supporting seat (1).
5. Locking mechanism according to claim 4, wherein the threaded adjustment part (3) is provided with an external thread; a thread groove matched with the external thread is formed in the locking part (2); the thread groove extends along the radial direction of the annular supporting seat (1);
and/or the thread adjusting part (3) is a screw rod, and the first end of the screw rod is in threaded connection with the locking part (2); the second end of the screw is connected with the driving device.
6. Locking mechanism according to claim 2, wherein the active locking part and the passive locking part are both movable in radial direction of the annular support (1); the driving device is used for driving the active locking part to move in the radial direction of the annular supporting seat (1).
7. The locking mechanism of claim 1, wherein the active locking portion is provided as one; the driven locking parts are arranged in a plurality of numbers; the plurality of driven locking portions and the driving locking portion are circumferentially arranged around the central axis.
8. Locking mechanism according to claim 3, characterized in that the outer circumferential wall of the annular support seat (1) is provided with an annular guide (12) arranged circumferentially around the central axis; the drive ring (4) is rotatably mounted on the annular guide (12).
9. The locking mechanism according to claim 8, characterized in that the surface of the locking member (21) close to the central axis of the annular support seat (1) is a locking surface, and the locking surface is an arc-shaped surface;
and/or a stop surface (41) is arranged on the inner peripheral wall of the transmission ring (4); the stop surface (41) is perpendicular to the central axis and faces the direction of the first end surface of the annular supporting seat (1); the annular guide (12) is arranged on the stop surface (41).
10. The locking mechanism according to claim 9, characterized in that the connection between the surface of the locking member (21) remote from the annular support (1) and the locking surface is chamfered.
11. A magnetic levitation system comprising a locking mechanism, wherein the locking mechanism is as claimed in any one of claims 1-10.
12. Magnetic levitation system according to claim 11, wherein when the locking mechanism comprises a threaded adjustment part (3), the threaded adjustment part (3) being a threaded rod, a first end of the threaded rod is in threaded connection with the locking part (2); the second end of the screw rod extends to the outside of the shell of the magnetic suspension system;
and/or a sealing ring (31) is sleeved on the screw rod; and a rotary sealing structure is formed between the sealing ring (31) and the screw rod and between the sealing ring and the shell of the magnetic suspension system.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911191836.3A CN111030362B (en) | 2019-11-28 | 2019-11-28 | Locking mechanism and magnetic suspension system with same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911191836.3A CN111030362B (en) | 2019-11-28 | 2019-11-28 | Locking mechanism and magnetic suspension system with same |
Publications (2)
| Publication Number | Publication Date |
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| CN111030362A CN111030362A (en) | 2020-04-17 |
| CN111030362B true CN111030362B (en) | 2020-12-18 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201911191836.3A Active CN111030362B (en) | 2019-11-28 | 2019-11-28 | Locking mechanism and magnetic suspension system with same |
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| CN (1) | CN111030362B (en) |
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| CN111030362A (en) | 2020-04-17 |
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