CN110671426A - Manual clearance-eliminating protective bearing device - Google Patents
Manual clearance-eliminating protective bearing device Download PDFInfo
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- CN110671426A CN110671426A CN201910768581.6A CN201910768581A CN110671426A CN 110671426 A CN110671426 A CN 110671426A CN 201910768581 A CN201910768581 A CN 201910768581A CN 110671426 A CN110671426 A CN 110671426A
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C32/00—Bearings not otherwise provided for
- F16C32/04—Bearings not otherwise provided for using magnetic or electric supporting means
- F16C32/0406—Magnetic bearings
- F16C32/044—Active magnetic bearings
- F16C32/0442—Active magnetic bearings with devices affected by abnormal, undesired or non-standard conditions such as shock-load, power outage, start-up or touchdown
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C32/00—Bearings not otherwise provided for
- F16C32/04—Bearings not otherwise provided for using magnetic or electric supporting means
- F16C32/0406—Magnetic bearings
- F16C32/044—Active magnetic bearings
- F16C32/0474—Active magnetic bearings for rotary movement
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- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Magnetic Bearings And Hydrostatic Bearings (AREA)
Abstract
The invention relates to a magnetic suspension bearing system, in particular to a protective bearing device for manually eliminating a gap. A manually lash-eliminating protective bearing assembly comprising: the outer surface of the double-conical sleeve is provided with two conical surfaces, and the double-conical sleeve is sleeved on the rotor; the supporting assemblies are two groups and are axially and slidably assembled on the periphery of the double-conical sleeve, the two groups of supporting assemblies are respectively arranged corresponding to the two conical surfaces, and the inner surfaces of the supporting assemblies facing the double-conical sleeve are conical surfaces matched with the corresponding conical surfaces; and the manual driving assembly drives the two groups of supporting assemblies to slide in opposite directions, and conical surfaces of the two groups of supporting assemblies are connected with two conical surfaces of the double-conical sleeve to clamp the double-conical sleeve. The technical problem that the falling of a rotor can bring impact and vibration to a magnetic suspension bearing system and further damage the magnetic suspension bearing system under the conditions of power failure, overload and the like in the prior art is solved.
Description
Technical Field
The invention relates to a magnetic suspension bearing system, in particular to a protective bearing device for manually eliminating a gap.
Background
Under the conditions of power failure, overload and the like, the magnetic suspension bearing system can lose the bearing capacity of the rotor, so a set of protective bearing device needs to be installed to provide temporary support for the rotor which loses the support, the rotor rotating at a high speed is prevented from falling on the stator, and the safety of the whole magnetic suspension system is ensured. At present, a traditional rolling bearing is mostly adopted as a protection bearing used in a magnetic suspension system, but in order to enable the magnetic suspension system to work normally, a fixed gap exists between a rotor and an inner ring of the rolling bearing. Therefore, when the rotor is dropped, since the gap between the rotor and the bearing cannot be eliminated, the bearing may be greatly impacted and vibrated by the rotor, resulting in damage to the protective bearing. And some novel protection bearings that can eliminate clearance still have a lot of not enough, and its structure is complicated, and reaction rate is slower, or need rely on control system just can work, and whole protection bearing just can't operate under the circumstances such as outage, and these factors lead to its reliability not high.
Therefore, in order to expand the application prospect of the magnetic suspension bearing, the radial gap can be manually eliminated under the conditions of overload power failure and the like, the reaction is sensitive, the damage to the protection bearing is reduced, and the magnetic suspension bearing plays an important role in the development of the magnetic suspension bearing.
Disclosure of Invention
In order to solve the technical problem that the magnetic suspension bearing system is damaged due to impact and vibration caused by falling of a rotor under the conditions of power failure, overload and the like in the prior art, the invention provides a protective bearing device for manually eliminating a gap, which can manually protect the rotor, prevent the damage caused by falling of a high-speed rotor and improve the safety of the system. The technical scheme of the invention is as follows:
a manually lash-eliminating protective bearing assembly comprising: the outer surface of the double-conical sleeve is provided with two conical surfaces, and the double-conical sleeve is sleeved on the rotor; the supporting assemblies are two groups and are axially and slidably assembled on the periphery of the double-conical sleeve, the two groups of supporting assemblies are respectively arranged corresponding to the two conical surfaces, and the inner surfaces of the supporting assemblies facing the double-conical sleeve are conical surfaces matched with the corresponding conical surfaces; and the manual driving assembly drives the two groups of supporting assemblies to slide in opposite directions, and conical surfaces of the two groups of supporting assemblies are connected with two conical surfaces of the double-conical sleeve to clamp the double-conical sleeve.
Through setting up the outside cover of rotor and establishing the bipyramid face sleeve, two sets of supporting components are established to bipyramid face sleeve outer slip cover, act on two sets of supporting components through manual drive assembly, drive two sets of supporting components axial slip. When the magnetic suspension bearing system works normally, a gap exists between the conical surfaces of the two groups of supporting assemblies and the double-conical sleeve, and the rotor can work normally; under the condition of power failure or overload, the two groups of supporting assemblies can be pushed to axially slide by the manual driving assembly, the axial sliding of the two groups of supporting assemblies eliminates a gap between a conical surface and a conical surface, the conical surfaces of the two groups of supporting assemblies are connected with the two conical surfaces of the double-conical-surface sleeve, the supporting assemblies can support the rotor, and the magnetic suspension bearing system is prevented from being damaged due to impact and vibration caused by falling of the rotor. In addition, the manual clearance-eliminating bearing protection device only needs manual operation of an operator, is not driven by other energy sources such as a power supply and the like, and is high in applicability.
Furthermore, the double-cone sleeve is in threaded connection with the rotor, the two conical surfaces of the double-cone sleeve are symmetrically arranged, the outer surfaces where the two conical surfaces are located are convex in the middle, and the two groups of supporting assemblies are symmetrically arranged.
Further, the supporting assembly comprises a supporting part and a supporting and positioning part, the supporting part is located between the supporting and positioning part and the double-cone sleeve, the supporting part is rotatably connected with the supporting and positioning part through a bearing, and the inner surface of the supporting part close to the double-cone sleeve is a conical surface.
Further, the supporting and positioning part is arranged on the rack in a sliding mode through the ball sleeve.
Furthermore, manual drive assembly includes handle components and cam group, the cam group includes at least two cams, and at least two cams set up respectively in the both sides of two sets of supporting components in order to promote two sets of supporting components to move in opposite directions, and the phase angle of all cams that are located the homonymy is the same, and the phase angle of the cam that is located different sides is central symmetry.
Furthermore, the handle assembly comprises two driving handles and a connecting rod, the two driving handles drive the cams on the two sides of the two groups of supporting assemblies to rotate respectively, and the outer ends of the two driving handles are hinged with the connecting rod respectively.
Furthermore, two sides of the two groups of supporting assemblies are fixedly provided with end covers, radial gaps exist between the end covers and the rotor or the double-cone sleeve, the manual driving assembly comprises a handle assembly and two driving pieces, the two driving pieces are respectively in threaded connection with the inner circumferential surfaces of the two end covers, the thread directions on the two driving pieces are opposite, the handle assembly drives the two driving pieces to rotate so that the two driving pieces move oppositely or oppositely relative to the two end covers, and when the two driving pieces move oppositely, the two driving pieces push the two groups of supporting assemblies to move oppositely.
Furthermore, one end of the driving piece, which is close to the supporting component, is in threaded connection with the end cover, the other end of the driving piece is square, and two ends of the handle component are respectively hooped and sleeved on one square end of the two driving pieces.
Furthermore, the outer sides of the two supporting positioning pieces are fixedly connected with baffle plates, and the manual driving assemblies drive the two groups of supporting assemblies to slide oppositely by pushing the baffle plates.
Furthermore, the device also comprises an elastic part, wherein the elastic part is positioned between the two groups of supporting components, two ends of the elastic part respectively act on the two groups of supporting components, and the number of the elastic parts is 2-200.
Based on the technical scheme, the invention can realize the following technical effects:
1. according to the manual clearance-eliminating protective bearing device, the double-conical sleeve is sleeved outside the rotor, the two groups of supporting assemblies are sleeved outside the double-conical sleeve in a sliding manner, and the two groups of supporting assemblies are driven to axially slide by the manual driving assembly acting on the two groups of supporting assemblies. When the magnetic suspension bearing system works normally, axial gaps and radial gaps exist between the conical surfaces of the two groups of supporting assemblies and the double-conical sleeve, and the rotor can work normally; under the condition of power failure or overload, the two groups of supporting assemblies can be pushed to axially slide by the manual driving assembly, axial gaps and radial gaps between conical surfaces are eliminated by the axial sliding of the two groups of supporting assemblies, the conical surfaces of the two groups of supporting assemblies are connected with the two conical surfaces of the double-conical-surface sleeve, the supporting assemblies can support the rotor, and the magnetic suspension bearing system is prevented from being damaged due to impact and vibration caused by falling of the rotor. In addition, the bearing protection device for manually eliminating the gap only needs to be manually operated by an operator, and is not driven by other energy sources such as a power supply and the like, so that the applicability is strong;
2. the bearing protection device for manually eliminating the clearance comprises a supporting part and a supporting positioning part, wherein the supporting part is rotatably connected with the supporting positioning part through a bearing; the conical surface is parallel to the corresponding conical surface, so that the surface contact between the supporting piece and the double-conical-surface sleeve can be realized, the contact area between the double-conical-surface sleeve and the supporting piece is increased, the supporting piece can be driven to rotate along with the contact area, and the supporting piece cannot be abraded due to relative rotation;
3. the manual driving assembly comprises a handle assembly and a cam group, the cam group is positioned on two sides of the supporting assembly and driven by the handle assembly to rotate so as to further push the supporting assembly to move, the phase angles of the cams on the same side are specifically limited to be the same, and the cams on different sides rotate relatively, so that under the condition that the handle assembly drives the cams on two sides to rotate in the same direction, the cams on two sides can push two groups of supporting assemblies to move oppositely, and the clamping and supporting of the double-conical-surface sleeve are realized; the manual driving assembly can also be arranged to comprise a handle assembly and driving pieces, the driving pieces are in threaded connection with the end covers, the thread directions of the two driving pieces are opposite, when the handle assembly drives the two driving pieces to synchronously rotate in the same direction, the two driving pieces can move in the opposite direction or in the opposite direction relative to the two end covers, when the two driving pieces move in the opposite direction relative to the end covers, the two driving pieces push the two groups of supporting assemblies to move in the opposite direction, and the radial gap and the axial gap between the conical surface and the conical surface disappear, so that the double-conical-surface sleeve can be clamped and supported;
4. according to the bearing protection device for manually eliminating the clearance, the elastic piece is arranged, the two ends of the elastic piece act on the two supporting and positioning pieces, under the condition that the rotor normally rotates, the elastic piece props up the two groups of supporting assemblies, and the clearance is formed between the two supporting pieces and the double-cone sleeve, so that the normal rotation of the rotor is not influenced. Under the condition that the magnetic suspension bearing system recovers to work normally, the electromagnetic adsorption assemblies are controlled to be powered off, under the action of the elastic piece, the two groups of supporting assemblies are axially separated, radial gaps and axial directions exist between the two supporting pieces and the double-cone sleeve, and the rotor can normally rotate.
Drawings
Fig. 1 is a schematic structural diagram of a protective bearing device for manually eliminating a gap according to a first embodiment of the present invention;
FIG. 2 is a cross-sectional view A-A of FIG. 1;
FIG. 3 is a front view of a double tapered sleeve;
FIG. 4 is a right side view of the double-tapered sleeve;
FIG. 5 is a schematic structural diagram of a bearing protection device for manually eliminating a gap according to a second embodiment of the present invention;
FIG. 6 is a cross-sectional view B-B of FIG. 5;
FIG. 7 is a front view of the drive member;
FIG. 8 is a left side view of the drive member;
in the figure: 1-a rotor; 2-a double conical sleeve; 21-a conical surface; 22-plane; 23-internal thread; 3-a support assembly; 31-a support; 311-a conical surface; 32-a support location; 321-a baffle plate; 33-a bearing; 331-inner retainer ring; 332-outer collar; 4-a manual drive assembly; 41-a handle assembly; 411-a drive handle; 412-a connecting rod; 413-a first handle member; 414-a second handle member; 415-a hand-held portion; 42-cam set; 421-a cam; 422-camshaft; 43-a drive member; 431-cylindrical end; 4311-external thread; 432-square end; 5-an elastic member; 6-a frame; 61-end cap; 7-ball sleeve.
Detailed Description
The invention is further described with reference to the accompanying drawings. In the description of the present invention, it is to be understood that the terms "radial," "axial," "upper," "lower," "top," "bottom," "inner," "outer," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the present invention and simplicity in description, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed in a particular orientation, and be operated in a particular manner, and thus are not to be construed as limiting the present invention. In the description of the present invention, "a plurality" means two or more unless otherwise specified.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "disposed," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; may be directly connected or indirectly connected through an intermediate. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
Example one
As shown in fig. 1 to 4, the present embodiment provides a protective bearing device for manually eliminating a gap, including a double-cone sleeve 2, two sets of supporting components 3 and a manual driving component 4, where the double-cone sleeve 2 is sleeved on a rotor 1, the two sets of supporting components 3 are provided, the two sets of supporting components 3 are axially slidably assembled on the periphery of the double-cone sleeve 2, the two sets of supporting components 3 are respectively disposed corresponding to two conical surfaces 21 of the double-cone sleeve 2, in an initial state, a gap exists between the two sets of supporting components 3 and the two conical surfaces 21, a gap also exists between the two sets of supporting components 3, the two sets of supporting components 3 slide in opposite directions under the action of the manual driving component 4, the gap between the supporting components 3 and the double-cone sleeve 2 is eliminated, the two sets of supporting components 3 are respectively connected to the two conical surfaces 21, and the supporting components 3.
The double-conical-surface sleeve 2 is detachably sleeved on the rotor 1. In this embodiment, double-cone sleeve 2 is detachably disposed on rotor 1 in a threaded connection manner, inner thread 23 is disposed on an inner wall of double-cone sleeve 2, outer thread is disposed on rotor 1, and double-cone sleeve 2 is in threaded connection with rotor 1. The outer surface of the double-conical sleeve 2 is provided with two conical surfaces 21, the two conical surfaces 21 are connected, the middle part where the two conical surfaces 21 are connected is in a convex shape compared with the two ends, one end of the double-conical sleeve 2 extends axially, the outer surface of the double-conical sleeve 2 is provided with two opposite planes 22, and the double-conical sleeve 2 is assembled on the rotor 1 by using tools conveniently. Preferably, the rotor 1 is sleeved with a double-cone sleeve 2 at both ends.
Each double-conical sleeve 2 corresponds to two groups of supporting assemblies 3, and the two groups of supporting assemblies 3 are positioned on the periphery of the double-conical sleeve 2 and respectively correspond to the two conical surfaces 21. The two sets of supporting assemblies 3 are symmetrically arranged on the periphery of the two conical surfaces 21, and the two sets of supporting assemblies 3 can axially slide. Specifically, the supporting assembly 3 includes a supporting member 31, a supporting and positioning member 32 and a bearing 33, the supporting member 31 is disposed near the tapered surface 21 of the double-tapered sleeve 2, the supporting and positioning member 32 is disposed at the outer periphery of the supporting member 31, and the supporting member 31 and the supporting and positioning member 32 are connected by the bearing 33. The inner surfaces of the support members 31 adjacent to the tapered surfaces 21 have tapered surfaces 311 corresponding to the tapered surfaces 21, and the tapered surfaces 311 of the two support members 31 correspond to the two tapered surfaces 21, respectively. Preferably, the tapered surface 311 is parallel to the corresponding tapered surface 21, and by the arrangement of the tapered surface 311 and the tapered surface 21, a radial gap and an axial gap can exist between the supporting component 3 and the double-tapered sleeve 2; when the two sets of bearing assemblies 3 are moved axially towards each other, both radial and axial play can be eliminated. The outer peripheral surface of the support member 31 is connected with the inner ring of the bearing 33, specifically, the outer peripheral surface of the support member 31 is stepped, and the inner ring of the bearing 33 can be limited by matching with the inner retainer ring 331. The outer ring of the bearing 33 is connected to the inner circumferential surface of the supporting and positioning member 32, specifically, the inner circumferential surface of the supporting and positioning member 32 is stepped, and the outer ring of the bearing 33 can be limited by engaging with the outer retainer 332. The outer peripheral surface of the supporting and positioning part 32 is arranged on the frame 6 in a sliding mode through the ball sleeve 7, and the supporting and positioning part 32 slides along the axial direction of the frame 6 to achieve the effect that the supporting assembly 3 slides along the axial direction. Preferably, the bearing 33 is a rolling bearing.
Further, an end cover 61 is fixedly arranged on the outer side of the two sets of supporting components 3, and the two end covers 61 are fixedly arranged on the frame 6 and are positioned on the outer side of the two sets of supporting components 3. Specifically, the two end caps 61 are annular, and an axial gap exists between the inner circumferential surfaces of the two end caps 61 and the rotor 1 or the double-cone sleeve 2. The axial moving range of the two groups of supporting components 3 can be limited by the end covers 61 on the two sides.
Further, a baffle 321 is connected to the outer side of each set of supporting components 3, specifically, the baffle 321 is fixedly connected to the outer side of two supporting positioning members 32, the outer surface of the supporting positioning member 32 is convex relative to the outer surface of the supporting component 31, and the manual driving component 4 pushes the supporting components 3 to move by pushing the baffle 321.
The manual driving assembly 4 comprises a handle assembly 41 and a cam assembly 42, the cam assembly 42 comprises at least two cams 421, the at least two cams 421 are distributed on two sides of the two sets of supporting assemblies 3, the cams 421 located on two sides of the two sets of supporting assemblies 3 are driven by the handle assembly 41 to rotate, and circumferential surfaces of the cams 421 abut against the baffles 321 of the supporting assemblies 3 to push the two sets of supporting assemblies 3 to move towards each other.
Specifically, all the cams 421 in the cam group 42 have the same shape, the phase angles of all the cams 421 located on the same side are the same, and the phase angles of the cams 421 located on different sides are centrosymmetric, so that when the cams 421 on both sides are driven by the handle assembly 41 to rotate, the cams 421 on both sides can rotate relatively to push the two sets of support assemblies 3 to move in the same direction. Further, a cam shaft 422 is connected to the middle of the cam 421, the cam shaft 422 is connected to the flat key of the cam 421 to drive the cam 421 to rotate, preferably, the cam 421 located on the same side is connected to the same cam shaft 422, and the two cam shafts 422 and the flat keys thereon are arranged in central symmetry. Preferably, all the cams 421 in the cam group 42 are located on the inner periphery of the end cover 61, that is, in the radial direction, the cams 421 are located between the rotor and the end cover 61, two cam shafts 422 are rotatably arranged on the two end covers 61, and one end of the two cam shafts 422 on the same side extends out of the end cover 61 to be connected with the handle assembly 41. In this embodiment, the cam group 42 includes two cams 421, and the two cams 421 are respectively located outside the two sets of support assemblies 3 and push the two sets of support assemblies 3 to move towards each other by pushing the blocking plate 321. Preferably, the two cams 421 are arranged centrosymmetrically.
The handle assembly 41 comprises two driving handles 411 and a connecting rod 412, one ends of the two driving handles 411 are respectively fixedly connected with or integrally formed with two cam shafts 422, and the other ends of the two driving handles 411 are respectively hinged with the connecting rod 412. Preferably, the two driving handles 411 are perpendicularly connected with the two cam shafts 422. By providing the connecting rod 412, only one driving handle 411 can be operated, and the other driving handle 411 can swing along with the operating rod, so that the cams 421 at the two sides can push the supporting components 3 to move towards each other. As shown in fig. 2, when the handle assembly 41 swings in the clamping direction, the handle assembly 41 drives the cams 422 to rotate, the cams 422 on both sides act on the two blocking plates 321 to push the two sets of supporting assemblies 3 to move relatively, and the tapered surfaces 311 are connected with the two tapered surfaces 21 to clamp the double-tapered sleeve 2; when the handle assembly 41 swings integrally along the resetting direction, the handle assembly 41 drives the cam 422 to rotate, the cams 422 on the two sides no longer provide pushing acting force for the baffle 321, the two groups of supporting assemblies 3 move back to back under the action of the elastic piece 5, the two groups of supporting assemblies 3 are far away from the double-conical-surface sleeve 2, a radial gap and an axial gap exist between the conical surface 311 and the two conical surfaces 21, and the rotor 1 can normally rotate.
An elastic part 5 is further arranged between the two groups of supporting assemblies 3, and two ends of the elastic part 5 respectively act on the two groups of supporting assemblies 3, so that when the manual driving assembly 4 does not work, a gap exists between the two groups of supporting assemblies 3 under the action of the elastic part 5, and a gap also exists between the conical surface 311 of the two groups of supporting assemblies 3 and the conical surface 21. Specifically, mounting grooves are formed in the end surfaces, close to the supporting and positioning members 32, of the two groups of supporting components 3, at least parts of two ends of the elastic member 5 are accommodated in the two mounting grooves, the elastic member 5 can be accommodated through the mounting grooves, and the elastic member 5 is prevented from being distorted and deformed. It is also possible to provide two ends of the elastic member 5 connected to the two supporting and positioning members 32 to prevent the elastic member 5 from coming out. It is also possible to arrange that both ends of the elastic element 5 abut against two respective holding locations 32. The elastic member 5 may be selected from, but not limited to, a spring. Preferably, the number of the elastic members 5 is 2 to 100.
Based on the above structure, the working principle of the manual clearance-eliminating protective bearing device of the embodiment is as follows: when the rotor 1 works normally, the manual driving assembly 4 does not work, the two groups of supporting assemblies 3 have gaps under the action of the elastic piece 5, gaps also exist between the conical surface 311 and the conical surface 21 of the supporting assemblies 3, and the supporting assemblies 3 do not influence the normal work of the rotor 1;
when an emergency occurs and the rotor 1 is unstable, the handle assembly 41 is manually driven to swing in the clamping direction, the handle assembly 41 drives the cam 421 to rotate, the cams 421 at the two sides push the two baffles 321 to move in opposite directions, the two baffles 321 drive the two sets of supporting assemblies 3 to move in opposite directions in the axial direction, a gap between the conical surface 311 and the conical surface 21 is eliminated, and the two sets of supporting assemblies 3 clamp and support the double-conical-surface sleeve 2 to protect the rotor 1. In addition, under the inertia effect of the rotor 1, the rotor 1 can drive the two supporting members 31 to rotate relative to the supporting and positioning member 32, and the rotation is stopped after a period of time;
when the magnetic suspension bearing system returns to normal operation, the manual driving handle assembly 41 swings along the resetting direction, the thrust action of the cam 421 on the two groups of supporting assemblies 3 disappears, the two supporting and positioning members 32 are separated from each other under the action of the elastic member 5 to drive the two supporting members 31 to be separated from each other, a gap exists between the conical surface 311 and the conical surface 21, and the rotor can normally float and operate.
Example two
As shown in fig. 5 to 8, this embodiment is substantially the same as the first embodiment except that: the manual drive assembly 4 is constructed and arranged differently.
Specifically, the manual driving assembly 4 includes a handle assembly 41 and two driving members 43, the two driving members 43 are respectively located at the outer sides of the two blocking plates 321, the two driving members 43 are in threaded connection with the inner peripheral surface of the end cover 61, the thread directions of the two driving members 43 are opposite, and when the handle assembly 41 drives the two driving members 43 to rotate along the axis of the rotor 1, the two driving members 43 can be driven to move toward or away from each other. Specifically, the two driving members 43 are both in a cylindrical shape with two open ends, the two driving members 43 are both sleeved on the overall outer peripheral surface formed by the rotor 1 and the double-conical-surface sleeve 2 with a gap, one end of each driving member 43 close to the baffle 321 is a cylindrical end 431, an external thread 4311 is arranged on the outer surface of each cylindrical end 431, an internal thread is arranged on the inner peripheral surface of each end cover 61, the two driving members 43 are in threaded connection with the inner peripheral surfaces of the two end covers 61, and preferably, the thread directions of the external threads 4311 on the two driving members 43 are opposite. The other ends of the two driving members 43 are square ends 432, the two ends of the handle assembly 41 are provided with square holes corresponding to the driving members 43, and the two ends of the handle assembly 41 can be sleeved on the square ends 432 of the two driving members 43 through the square holes, so that the handle assembly 41 can drive the two driving members 43 to rotate, and the two driving members 43 rotate relative to the end cover 61 and move axially relative to the handle assembly 41 and the end cover 61.
Preferably, the handle assembly 41 is U-shaped, and the handle assembly 41 may be integrally formed or separately disposed. For convenience of installation, the handle assembly 41 in this embodiment is provided as a separate body, the handle assembly 41 includes a first L-shaped handle piece 413 and a second L-shaped handle piece 414, and the first handle piece 413 and the second handle piece 414 are fixedly connected; in addition, a handle portion 415 extends from the first handle member 413 to facilitate manipulation of the handle assembly 41.
Based on the above structure, the working principle of the manual clearance-eliminating protective bearing device of the embodiment is as follows: when the rotor 1 works normally, the manual driving assembly 4 does not work, the two groups of supporting assemblies 3 have gaps under the action of the elastic piece 5, gaps also exist between the conical surface 311 and the conical surface 21 of the supporting assemblies 3, and the supporting assemblies 3 do not influence the normal work of the rotor 1;
when an emergency occurs and the rotor 1 is unstable, the handle assembly 41 is manually driven to swing in the clamping direction, the handle assembly 41 drives the two driving pieces 43 to rotate, the two driving pieces 43 rotate relative to the two end covers 61 and move axially in opposite directions, the two driving pieces 43 push the two baffle plates 321 to move in opposite directions, the two baffle plates 321 drive the two sets of supporting assemblies 3 to move axially in opposite directions, a gap between the conical surface 311 and the conical surface 21 is eliminated, and the two sets of supporting assemblies 3 clamp and support the double-conical-surface sleeve 2 to protect the rotor 1. In addition, under the inertia effect of the rotor 1, the rotor 1 can drive the two supporting members 31 to rotate relative to the supporting and positioning member 32, and the rotation is stopped after a period of time;
when the magnetic suspension bearing system returns to normal operation, the manual driving handle assembly 41 swings in the resetting direction, the two driving members 43 rotate relative to the two end covers 61 and move back to back in the axial direction, the thrust action of the two driving members 43 on the two groups of supporting assemblies 3 disappears, the two supporting and positioning members 32 are far away from each other under the action of the elastic member 5 to drive the two supporting members 31 to be far away from each other, a gap exists between the conical surface 311 and the conical surface 21, and the rotor can normally float and operate.
In the bearing protection device for manually eliminating the gap in the first embodiment and the second embodiment, after the rotor 1 falls down, the two groups of supporting components 3 can be driven by the manual driving component 4 to slide in opposite directions along the axial direction, so that the radial gap and the axial gap between the double-cone sleeve 2 and the supporting components 3 can be eliminated simultaneously, the two groups of supporting components 3 can clamp the double-cone sleeve 2 to provide radial and axial protection for the rotor, and the impact on the bearing protection after the high-speed rotor falls down is avoided; when the magnetic suspension bearing system works again, the pushing force of the manual control manual driving assembly 4 on the supporting assemblies 3 disappears, the two groups of supporting assemblies 3 move back and forth along the axial direction under the action of the elastic piece 5, so that radial gaps and axial gaps exist between the double-conical-surface sleeve 2 and the two groups of supporting assemblies 3, the magnetic suspension bearing system can work normally again, the reliability and the safety of a protection bearing are improved, and the requirement for the development of the high-speed magnetic suspension bearing system is met.
The embodiments of the present invention have been described in detail with reference to the drawings, but the present invention is not limited to the above embodiments, and various changes can be made within the knowledge of those skilled in the art without departing from the gist of the present invention.
Claims (10)
1. A protective bearing device for manually eliminating clearances, comprising:
the rotor comprises a double-conical sleeve (2), wherein the outer surface of the double-conical sleeve (2) is provided with two conical surfaces (21), and the double-conical sleeve (2) is sleeved on the rotor (1);
two groups of supporting assemblies (3), wherein the two groups of supporting assemblies (3) are axially and slidably assembled on the periphery of the double-conical sleeve (2), the two groups of supporting assemblies (3) are respectively arranged corresponding to the two conical surfaces (21), and the inner surface of each supporting assembly (3) facing the double-conical sleeve (2) is a conical surface (311) matched with the corresponding conical surface (21);
and the manual driving assembly (4) drives the two groups of supporting assemblies (3) to slide in opposite directions, and conical surfaces (311) of the two groups of supporting assemblies (3) are connected with two conical surfaces (21) of the double-conical-surface sleeve (2) to clamp the double-conical-surface sleeve (2).
2. The manual play-eliminating protective bearing device according to claim 1, wherein the double-cone sleeve (2) is in threaded connection with the rotor (1), the two conical surfaces (21) of the double-cone sleeve (2) are symmetrically arranged, the outer surface where the two conical surfaces (21) are located is convex in the middle, and the two sets of the support assemblies (3) are symmetrically arranged.
3. A manual play-eliminating protective bearing device according to claim 1 or 2, wherein the supporting assembly (3) comprises a supporting member (31) and a supporting positioning member (32), the supporting member (31) is located between the supporting positioning member (32) and the double-cone sleeve (2), the supporting member (31) is rotatably connected with the supporting positioning member (32) through a bearing (33), and the inner surface of the supporting member (31) close to the double-cone sleeve (2) is a conical surface (311).
4. A manual play-eliminating protective bearing device according to claim 3, wherein the support and positioning element (32) is slidably arranged on the frame (6) via a ball sleeve (7).
5. The manual backlash elimination protective bearing device according to claim 1, wherein the manual driving assembly (4) comprises a handle assembly (41) and a cam set (41), the cam set (42) comprises at least two cams (421), the at least two cams (421) are respectively arranged on two sides of the two sets of supporting assemblies (3) to push the two sets of supporting assemblies (3) to move towards each other, phase angles of all the cams (421) on the same side are the same, and phase angles of the cams (421) on different sides are centrosymmetric.
6. A manual play-eliminating protective bearing device according to claim 5, wherein the handle assembly (41) comprises two driving handles (411) and a connecting rod (412), the two driving handles (411) respectively drive the cams (421) on both sides of the two sets of supporting assemblies (3) to rotate, and the outer ends of the two driving handles (411) are respectively hinged with the connecting rod (412).
7. A manual play-eliminating protective bearing device according to claim 1, wherein end caps (61) are fixedly arranged on both sides of the two sets of support assemblies (3), a radial clearance is reserved between the end cover (61) and the rotor (1) or the double-conical sleeve (2), the manual driving assembly (4) comprises a handle assembly (41) and two driving parts (43), the two driving parts (43) are respectively in threaded connection with the inner circumferential surfaces of the two end covers (61), the directions of external threads (4311) on the two driving parts (43) are opposite, the handle assembly (41) drives the two driving parts (43) to rotate so as to enable the two driving parts (43) to move towards or away from each other relative to the two end covers (61), when the two driving pieces (43) move towards each other, the two driving pieces (43) push the two groups of supporting assemblies (3) to move towards each other.
8. A manual play elimination and protection bearing device as claimed in claim 7, wherein one end of the driving member (43) close to the supporting assembly (3) is screwed with the end cap (61), the other end of the driving member (43) is square, and both ends of the handle assembly (41) are respectively hooped on one square end of the two driving members (43).
9. A manual play-eliminating protective bearing device according to claim 3, wherein a baffle plate (321) is fixedly connected to the outer side of the two supporting and positioning members (32), and the manual driving assembly (4) drives the two groups of supporting assemblies (3) to slide towards each other by pushing the baffle plate (321).
10. The electromagnetic adsorption clamping type protective bearing device according to claim 1, further comprising an elastic member (5), wherein the elastic member (5) is located between the two sets of support assemblies (3), two ends of the elastic member (5) respectively act on the two sets of support assemblies (3), and the number of the elastic members (5) is 2-200.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910768581.6A CN110671426A (en) | 2019-08-20 | 2019-08-20 | Manual clearance-eliminating protective bearing device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910768581.6A CN110671426A (en) | 2019-08-20 | 2019-08-20 | Manual clearance-eliminating protective bearing device |
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| Publication Number | Publication Date |
|---|---|
| CN110671426A true CN110671426A (en) | 2020-01-10 |
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|---|---|---|---|
| CN201910768581.6A Pending CN110671426A (en) | 2019-08-20 | 2019-08-20 | Manual clearance-eliminating protective bearing device |
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| CN111431328A (en) * | 2020-03-27 | 2020-07-17 | 江苏理工学院 | Rocker clamping type bearing protection device |
| CN111503148A (en) * | 2020-04-01 | 2020-08-07 | 江苏理工学院 | Manual connecting rod slider protection bearing device |
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