CN110671426A - A protective bearing device for manually eliminating clearance - Google Patents

Abstract

The invention relates to a magnetic suspension bearing system, in particular to a protection bearing device for manually eliminating clearance. A bearing protection device for manually eliminating clearance, comprising: a double-cone-surface sleeve, the outer surface of the double-cone-surface sleeve has two conical surfaces, the double-cone-surface sleeve is sleeved on a rotor; a support assembly, There are two sets of the support assemblies and are axially slidably assembled on the outer circumference of the double-cone surface sleeve. The two sets of support assemblies are respectively arranged corresponding to the two conical surfaces, and the support assemblies face the double-cone surfaces. The inner surface of the sleeve is a conical surface adapted to the corresponding conical surface; the manual drive assembly drives the two sets of support assemblies to slide toward each other, and the conical surfaces of the two sets of support assemblies are connected to the double-cone surface sleeves. The two conical surfaces of the barrel are connected to clamp the double conical surface sleeve. The technical problem in the prior art that in the case of power failure, overload, etc., the drop of the rotor will bring shock and vibration to the magnetic suspension bearing system, thereby causing damage.

Description

A protective bearing device for manually eliminating clearance

technical field

The invention relates to a magnetic suspension bearing system, in particular to a protection bearing device for manually eliminating clearance.

Background technique

In the case of power failure, overload, etc., the magnetic suspension bearing system will lose the bearing capacity of the rotor, so it is necessary to install a set of protective bearing devices to provide temporary support for the rotor that has lost its support, to prevent the high-speed rotating rotor from falling on the stator, and to ensure the entire rotor. The safety of the magnetic levitation system. At present, the protection bearings used in the magnetic suspension system mostly use traditional rolling bearings, but in order to make the magnetic suspension system work normally, there is a fixed gap between the rotor and the 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 will be greatly impacted and vibrated by the rotor, resulting in damage to the protective bearing. However, some new types of protective bearings that can eliminate gaps still have many deficiencies. Their structures are complex, their response speed is slow, or they need to rely on the control system to work. In the event of a power failure, the entire protective bearing cannot work. These factors lead to its reliability. Sex is not high.

Therefore, in order to expand the application prospects of the magnetic suspension bearing, it is necessary to study a method that can manually eliminate the radial gap in the event of overload and power failure, and has a sensitive response and reduces the damage to the protection bearing, which can play an important role in the development of the magnetic suspension bearing.

SUMMARY OF THE INVENTION

In order to solve the technical problem in the prior art that in the case of power failure, overload, etc., the drop of the rotor will bring shock and vibration to the magnetic suspension bearing system and cause damage, the present invention proposes a protective bearing device for manually eliminating gaps. The rotor can be manually protected to prevent the damage caused by the high-speed rotor falling, and improve the safety of the system. The technical scheme of the present invention is:

A protective bearing device for manually eliminating clearance, comprising: a double-cone-surface sleeve, the outer surface of the double-cone-surface sleeve has two conical surfaces, the double-cone-surface sleeve is sleeved on a rotor; a support assembly, There are two sets of the support assemblies, which are axially slidably assembled on the outer circumference of the double-cone surface sleeve. The two sets of support assemblies are respectively arranged corresponding to the two conical surfaces, and the support assemblies face the double-cone surfaces. The inner surface of the sleeve is a conical surface adapted to the corresponding conical surface; the manual drive assembly drives the two sets of support assemblies to slide toward each other, and the conical surfaces of the two sets of support assemblies are connected to the double-cone surface sleeves. The two conical surfaces of the barrel are connected to clamp the double conical surface sleeve.

A double-cone surface sleeve is set outside the rotor, and two sets of support assemblies are slidably sleeved on the outside of the double-cone sleeve. The manual drive assembly acts on the two sets of support assemblies to drive the two sets of support assemblies to slide axially. When the magnetic suspension bearing system is working normally, there is a gap between the conical surfaces of the two sets of support components and the double-cone surface sleeve, and the rotor can work normally; in the case of power failure or overload, the manual drive components can be used to push the two sets of supports The assembly slides in the axial direction, and the axial sliding of the two sets of support assemblies eliminates the gap between the conical surfaces and the conical surfaces. The assembly supports the rotor, preventing the drop of the rotor from causing shock and vibration to the magnetic bearing system and causing damage. In addition, the protective bearing device that eliminates the clearance manually only needs the operator to operate manually, and does not need to use other energy sources such as power to drive, and has strong applicability.

Further, the double-cone-surface sleeve is threadedly connected to the rotor, the two conical surfaces of the double-cone-surface sleeve are symmetrically arranged, and the outer surfaces where the two conical surfaces are located are in the shape of a middle bulge. The support assemblies are symmetrically arranged.

Further, the support assembly includes a support member and a support positioner, the support member is located between the support positioner and the double cone sleeve, and the support member is rotatably connected to the support positioner through a bearing, The inner surface of the support member close to the double-cone sleeve is a conical surface.

Further, the supporting and positioning member is slidably arranged on the frame through the ball sleeve.

Further, the manual drive assembly includes a handle assembly and a cam group, the cam group includes at least two cams, and the at least two cams are respectively arranged on both sides of the two groups of support assemblies to push the two groups of support assemblies to move toward each other, located at the same The phase angles of all cams on one side are the same, and the phase angles of cams on different sides are center-symmetrical.

Further, the handle assembly includes two driving handles and connecting rods, the two driving handles respectively drive the cams on both sides of the two sets of support assemblies to rotate, and the outer ends of the two driving handles are respectively hinged with the connecting rods.

Further, end caps are fixed on both sides of the two sets of support assemblies, and there is a radial gap between the end caps and the rotor or the double-cone sleeve, and the manual drive assembly includes a handle assembly and two There are two driving members, the two driving members are respectively connected with the inner peripheral surfaces of the two end caps with threads, and the screw threads on the two driving members are in opposite directions. The handle assembly drives the two driving members to rotate so that the two driving members are relative to the two driving members The end caps move toward each other or in the opposite direction. When the two drive members move towards each other, the two drive members push the two groups of support assemblies to move towards each other.

Further, one end of the driving member close to the support assembly is threadedly connected with the end cover, the other end of the driving member is square, and the two ends of the handle assembly are respectively hooped on the two driving members. on the square end.

Further, a baffle plate is fixedly connected to the outer sides of the two support and positioning members, and the manual drive assembly drives the two groups of the support assemblies to slide toward each other by pushing the baffle plate.

Further, an elastic member is also included, the elastic member is located between the two sets of support assemblies, the two ends of the elastic member respectively act on the two sets of support assemblies, and the number of the elastic members is 2-200.

Based on the above technical solutions, the technical effects that the present invention can achieve are:

1. The protective bearing device of the present invention for manually eliminating gaps is provided with a double-cone sleeve outside the rotor, and two sets of support assemblies are slidably sleeved on the outside of the double-cone sleeve, and the two sets of support assemblies are acted on by the manual drive assembly, The two groups of support assemblies are driven to slide axially. When the magnetic suspension bearing system is working normally, there are axial gaps and radial gaps between the conical surfaces of the two sets of support components and the double conical surface sleeves, and the rotor can work normally; in the case of power failure or overload, manual drive can be used components to push the two sets of supporting components to slide in the axial direction, the axial sliding of the two sets of supporting components eliminates the axial and radial gaps between the conical surfaces and the conical surfaces, and the conical surfaces of the two sets of supporting components and the double-cone The two conical surfaces of the face sleeve are connected, and the support assembly can support the rotor, so as to prevent the drop of the rotor from bringing shock and vibration to the magnetic suspension bearing system and causing damage. In addition, the protective bearing device that eliminates the gap manually only needs the operator to operate manually, without the use of other energy sources such as power supply, and has strong applicability;

2. The protective bearing device for manually eliminating gaps of the present invention includes a supporting member and a supporting positioning member by setting the supporting assembly, and the supporting member is rotatably connected to the supporting positioning member through the bearing. When connected, the rotor can drive the support to rotate, and the support rotates relative to the support and positioning member, which can buffer the rotor and reduce damage to the rotor; the conical surface is parallel to the corresponding conical surface, and the support can be realized. It is in surface contact with the double-cone sleeve, and the contact area between the double-cone sleeve and the support is increased, which can drive the support to rotate, and the relative rotation between the two will not cause damage to the two. wear;

3. The protective bearing device for manually eliminating gaps of the present invention is provided with a manual drive assembly including a handle assembly and a cam group, and the cam group is located on both sides of the support assembly and rotated under the drive of the handle assembly to push the support assembly to move. The phase angles of the side cams are the same, and the cams on different sides rotate relative to each other. In this way, when the handle assembly drives the cams on both sides to rotate in the same direction, the cams on both sides can push the two sets of support assemblies to move toward each other, realizing the double-cone sleeve. The clamping support can also be set up; the manual drive assembly can also be set to include a handle assembly and a drive part, the drive part is threadedly connected to the end cover, and the thread directions of the two drive parts are opposite, when the handle assembly drives the two drive parts to rotate synchronously in the same direction, The two driving members can move toward or away from the two end caps. When the two driving members move towards each other relative to the end caps, the two driving members push the two sets of supporting components to move towards each other. The radial gap and axial gap between the surfaces disappear, and the clamping support of the double-cone sleeve is realized;

4. The protective bearing device for manually eliminating gaps of the present invention is provided with elastic parts, and the two ends of the elastic parts act on the two support positioning parts. There is a gap between the support and the double-cone sleeve, which does not affect the normal rotation of the rotor. When the magnetic suspension bearing system resumes normal operation, by controlling the power off of the electromagnetic adsorption component, under the action of the elastic member, the two sets of supporting components are axially separated, and there is a radial gap between the two supporting components and the double-cone sleeve. and axial, the rotor can rotate normally.

Description of drawings

1 is a schematic structural diagram of a protective bearing device for manually eliminating clearance according to Embodiment 1 of the present invention;

Fig. 2 is the A-A sectional view of Fig. 1;

Figure 3 is a front view of a double-cone sleeve;

Figure 4 is a right side view of the double-cone sleeve;

5 is a schematic structural diagram of a protective bearing device for manually eliminating clearance according to Embodiment 2 of the present invention;

Fig. 6 is the B-B sectional view of Fig. 5;

Fig. 7 is the front view of the driver;

Fig. 8 is the left side view of the driver;

In the figure: 1-rotor; 2-double cone sleeve; 21-cone; 22-plane; 23-internal thread; 3-support assembly; 31-support; 311-cone; 32-support positioning member ;321-baffle plate;33-bearing;331-inner retaining ring;332-outer retaining ring;4-manual drive assembly;41-handle assembly;411-drive handle;412-connecting rod;413-first handle piece; 414-second handle part; 415-hand-held part; 42-cam group; 421-cam; 422-camshaft; 43-drive part; 431-cylindrical end; 4311-external thread; 432-square end; ; 6-frame; 61-end cover; 7-ball sleeve.

Detailed ways

The content of the present invention will be further described below 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", etc. refer to orientations Or the positional relationship is based on the orientation or positional relationship shown in the drawings, which is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation. , so it should not be construed as a limitation of the present invention. In the description of the present invention, unless otherwise specified, "plurality" means two or more.

In the description of the present invention, it should be noted that, unless otherwise expressly specified and limited, the terms "installation", "arrangement" and "connection" should be understood in a broad sense, for example, it may be a fixed connection or a detachable connection connected, or integrally connected; either directly or indirectly through an intermediary. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

Example 1

As shown in Figures 1-4, the present embodiment provides a protective bearing device for manually eliminating clearance, including a double-cone sleeve 2, a support assembly 3 and a manual drive assembly 4. The double-cone sleeve 2 is sleeved on the rotor 1, there are two groups of support assemblies 3, the two groups of support assemblies 3 are axially slidably assembled on the outer circumference of the double-cone sleeve 2, and the two groups of support assemblies 3 correspond to the two conical surfaces 21 of the double-cone sleeve 2 respectively. Setting, in the initial state, there is a gap between the two sets of support assemblies 3 and the two cone surfaces 21, and there is also a gap between the two sets of support assemblies 3, and the two sets of support assemblies 3 slide towards each other under the action of the manual drive assembly 4 , the gap between the support assembly 3 and the double conical sleeve 2 is eliminated, the two groups of support assemblies 3 are respectively connected with the two conical surfaces 21 , and the support assembly 3 clamps the double conical sleeve 2 .

The double-cone sleeve 2 is detachably sleeved on the rotor 1 . In this embodiment, the double-cone sleeve 2 is detachably arranged on the rotor 1 by means of threaded connection, the inner wall of the double-cone sleeve 2 is provided with an inner thread 23, the rotor 1 is provided with an outer thread, and the double-cone sleeve 2 is provided with an inner thread 23. The face sleeve 2 is screwed to the rotor 1 . The outer surface of the double-conical sleeve 2 has two conical surfaces 21, the two conical surfaces 21 are connected, and the middle part where the two conical surfaces 21 are connected is convex compared to the two ends. One end extends axially, and two opposite flat surfaces 22 are arranged on the outer surface thereof, so as to facilitate the use of tools to assemble the double-cone sleeve 2 on the rotor 1 . Preferably, both ends of the rotor 1 are sleeved with double conical sleeves 2 .

Each double-cone sleeve 2 corresponds to two sets of support assemblies 3 , and the two sets of support assemblies 3 are located on the outer circumference of the double-cone sleeve 2 and are respectively disposed corresponding to the two conical surfaces 21 . The two sets of support assemblies 3 are symmetrically arranged on the outer circumferences of the two conical surfaces 21 , and the two sets of support assemblies 3 can slide axially. Specifically, the supporting assembly 3 includes a supporting member 31 , a supporting positioning member 32 and a bearing 33 . The supporting member 31 is disposed close to the conical surface 21 of the double-conical sleeve 2 , and the supporting positioning member 32 is located on the outer circumference of the supporting member 31 . The supporting member 31 and the The support positioning member 32 is connected by a bearing 33 . The inner surface of the support member 31 close to the tapered surface 21 is a tapered surface 311 adapted to the tapered surface 21 , and the tapered surfaces 311 of the two support members 31 correspond to the two tapered surfaces 21 respectively. Preferably, the conical surface 311 is parallel to the corresponding conical surface 21, and through the arrangement of the conical surface 311 and the conical surface 21, a radial gap and an axial gap can exist between the bearing assembly 3 and the double-conical surface sleeve 2 at the same time ; When the two sets of support assemblies 3 move toward each other in the axial direction, the radial clearance and the axial clearance can be eliminated at the same time. The outer peripheral surface of the support member 31 is connected to the inner ring of the bearing 33 . Specifically, the outer peripheral surface of the support member 31 is stepped, and the inner ring 331 can be used to limit the inner ring of the bearing 33 . The outer ring of the bearing 33 is connected with the inner peripheral surface of the support and positioning member 32 . Specifically, the inner peripheral surface of the supporting and positioning member 32 is stepped, and the outer ring 332 can be used to limit the outer ring of the bearing 33 . The outer peripheral surface of the supporting and positioning member 32 is slidably arranged on the frame 6 through the ball sleeve 7 , and the supporting and positioning member 32 slides along the axial direction of the frame 6 to realize the axial sliding of the supporting assembly 3 . Preferably, the bearing 33 is a rolling bearing.

Further, end covers 61 are fixedly disposed on the outer sides of the two groups of support assemblies 3 , and the two end covers 61 are fixedly disposed on the frame 6 and located outside the two groups of support assemblies 3 . Specifically, the two end caps 61 are annular, and there is an axial gap between the inner peripheral surfaces of the two end caps 61 and the rotor 1 or the double-cone sleeve 2 . The axial movement range of the two groups of support assemblies 3 can be limited by the end covers 61 on both sides.

Further, a baffle plate 321 is connected to the outer side of each set of support assemblies 3 , specifically, the outer sides of the two support positioning members 32 are fixedly connected with a baffle plate 321 , and the outer surface of the support positioning member 32 is opposite to the outer surface of the support member 31 Convex, the manual drive assembly 4 pushes the support assembly 3 to move by pushing the baffle 321 .

The manual drive assembly 4 includes a handle assembly 41 and a cam group 42. The cam group 42 includes at least two cams 421. The at least two cams 421 are distributed on both sides of the two sets of support assemblies 3. The cams located on both sides of the two sets of support assemblies 3 Driven by the handle assembly 41, the 421 rotates, and the circumferential surface of the cam 421 abuts on the baffle plate 321 of the support assembly 3 to push the two groups of support assemblies 3 to move toward each other.

Specifically, all the cams 421 in the cam group 42 have the same shape, all the cams 421 on the same side have the same phase angle, and the phase angles of the cams 421 on different sides are centrally symmetric, so when the cams 421 on both sides are in the handle assembly When driven by the 41 to rotate, the cams 421 on both sides can rotate relative to each other, pushing the two groups of support assemblies 3 to move in the same direction. Further, a camshaft 422 is connected to the middle of the cam 421, and the camshaft 422 is connected with the cam 421 with a flat key to drive the cam 421 to rotate. The flat keys on it are arranged centrally symmetrically. Preferably, all the cams 421 in the cam group 42 are located on the inner circumference of the end cover 61, that is, in the radial direction, the cams 421 are located between the rotor and the end cover 61, and the two camshafts 422 are rotatably arranged on the two On the end cover 61 , one end of the two camshafts 422 located on the same side extends out of the end cover 61 and is connected to the handle assembly 41 . In this embodiment, the cam group 42 includes two cams 421 , which are respectively located on the outer sides of the two groups of support assemblies 3 and push the two groups of support assemblies 3 to move toward each other by pushing the baffle plate 321 . Preferably, the two cams 421 are centrally symmetrical.

The handle assembly 41 includes two driving handles 411 and connecting rods 412 . One end of the two driving handles 411 is fixedly connected to or integrally formed with the two camshafts 422 respectively, and the other ends of the two driving handles 411 are hinged with the connecting rods 412 respectively. Preferably, the two driving handles 411 are vertically connected with the two camshafts 422 . By arranging the connecting rod 412, only one driving handle 411 can be operated, and the other driving handle 411 will also swing accordingly, so that the cams 421 on both sides can push the supporting assembly 3 to move toward each other. As shown in FIG. 2 , when the handle assembly 41 swings in the clamping direction as a whole, the handle assembly 41 drives the cam 422 to rotate, and the cams 422 on both sides act on the two baffles 321 to push the two sets of support assemblies 3 to move relative to each other. The surface 311 is in contact with the two conical surfaces 21 and clamps the double conical surface sleeve 2; when the handle assembly 41 swings in the reset direction as a whole, the handle assembly 41 drives the cam 422 to rotate, and the cams 422 on both sides no longer provide the baffle 321 Provide a pushing force, the two sets of support assemblies 3 move in opposite directions under the action of the elastic member 5, the two sets of support assemblies 3 are far away from the double-cone sleeve 2, and there is a radial direction between the conical surface 311 and the two conical surfaces 21. and axial clearance, the rotor 1 can rotate normally.

An elastic member 5 is also arranged between the two sets of support assemblies 3, and the two ends of the elastic member 5 act on the two sets of support assemblies 3 respectively. There is a gap under the action of , and there is also a gap between the tapered surfaces 311 and the tapered surfaces 21 of the two sets of support assemblies 3 . Specifically, installation grooves are formed on the end faces of the support positioning members 32 of the two sets of support assemblies 3, and both ends of the elastic member 5 are at least partially accommodated in the two installation grooves. The installation grooves can accommodate the elastic member 5, preventing elastic Piece 5 is twisted and deformed. The two ends of the elastic member 5 can also be connected to the two supporting and positioning members 32 to prevent the elastic member 5 from coming out. Two ends of the elastic member 5 can also be set to abut on the two supporting positioning members 32 respectively. The elastic member 5 is optional but not limited to a spring. Preferably, the number of elastic members 5 is 2-100.

Based on the above structure, the working principle of the protective bearing device for manually eliminating gaps in this embodiment is as follows: when the rotor 1 works normally, the manual drive assembly 4 does not work, and the two groups of support assemblies 3 have a gap under the action of the elastic member 5, and the support There is also a gap between the conical surface 311 of the assembly 3 and the conical surface 21, and the supporting assembly 3 does not affect the normal operation of the rotor 1;

When an emergency occurs and the rotor 1 becomes unstable, the handle assembly 41 is manually driven to swing in the clamping direction, the handle assembly 41 drives the cam 421 to rotate, and the cams 421 on both sides push the two baffles 321 to move toward each other, and the two baffles 321 The two sets of support assemblies 3 are driven to move toward each other in the axial direction, eliminating the gap between the conical surface 311 and the conical surface 21 . In addition, under the inertial action of the rotor 1, the rotor 1 can drive the two supporting members 31 to rotate relative to the supporting positioning member 32, and stop rotating after a period of rotation;

When the magnetic suspension bearing system resumes normal operation, the manual drive handle assembly 41 swings in the reset direction, the thrust effect of the cam 421 on the two sets of support assemblies 3 disappears, and the two support positioning members 32 move away from each other under the action of the elastic member 5, driving the two The supporting members 31 are also far away from each other, and there is a gap between the conical surface 311 and the conical surface 21, so that the rotor can be suspended and run normally.

Embodiment 2

As shown in FIGS. 5-8 , this embodiment is basically the same as the first embodiment, and the only difference is that the structure and arrangement of the manual drive assembly 4 are different.

Specifically, the manual drive assembly 4 includes a handle assembly 41 and two drive members 43 , the two drive members 43 are located on the outer sides of the two baffles 321 respectively, and the two drive members 43 are screwed 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 cylindrical with openings at both ends, and the two driving members 43 are sleeved on the overall outer peripheral surface formed by the rotor 1 and the double-conical sleeve 2 with a gap. One end of the plate 321 is the cylindrical end 431 , the outer surface of the cylindrical end 431 is provided with an external thread 4311 , the inner peripheral surface of the end cover 61 is provided with an internal thread, and the two driving parts 43 are threadedly connected to the inner peripheral surface of the two end caps 61 . , preferably, the thread directions of the external threads 4311 on the two driving members 43 are opposite. The other end of the two driving members 43 is a square end 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 hooped on the square of the two driving members 43 through the square holes. In this way, 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 provided. For the convenience of installation, the handle assembly 41 in this embodiment is provided as a separate body. The handle assembly 41 includes an L-shaped first handle member 413 and an in-line second handle member 414. The first handle member 413 and the second handle member 414 The handle member 414 is fixedly connected; in addition, a handle portion 415 is extended on the first handle member 413 to facilitate the operation of the handle assembly 41 .

Based on the above structure, the working principle of the protective bearing device for manually eliminating gaps in this embodiment is as follows: when the rotor 1 works normally, the manual drive assembly 4 does not work, and the two groups of support assemblies 3 have a gap under the action of the elastic member 5, and the support There is also a gap between the conical surface 311 of the assembly 3 and the conical surface 21, and the supporting assembly 3 does not affect the normal operation of the rotor 1;

When an emergency occurs and the rotor 1 becomes unstable, the handle assembly 41 is manually driven to swing in the clamping direction, and the handle assembly 41 drives the two driving members 43 to rotate, and the two driving members 43 rotate relative to the two end covers 61 and face each other in the axial direction. The two driving members 43 push the two baffles 321 to move towards each other, and the two baffles 321 drive the two sets of support assemblies 3 to move towards each other in the axial direction, eliminating the gap between the conical surface 311 and the conical surface 21, and the two sets of support The assembly 3 clamps and supports the double-cone surface sleeve 2 to protect the rotor 1 . In addition, under the inertial action of the rotor 1, the rotor 1 can drive the two supporting members 31 to rotate relative to the supporting positioning member 32, and stop rotating after a period of rotation;

When the magnetic suspension bearing system resumes normal operation, the handle assembly 41 is manually driven to swing in the reset direction, the two driving members 43 rotate relative to the two end covers 61 and move in the opposite direction in the axial direction, and the two driving members 43 support the two groups of support assemblies. The thrust effect of 3 disappears, and the two supporting and positioning members 32 move away from each other under the action of the elastic member 5, which drives the two supporting members 31 to also move away from each other. There is a gap between the conical surface 311 and the conical surface 21, and the rotor can be suspended normally. run.

In the first and second embodiments, the protective bearing device for manually eliminating the clearance can be driven by the manual drive assembly 4 to drive the two groups of support assemblies 3 to slide toward each other in the axial direction after the rotor 1 falls, thereby simultaneously eliminating the double-cone sleeve 2. The radial and axial gaps between the supporting components 3 and the supporting components 3 can clamp the double-cone sleeve 2 to provide radial and axial protection for the rotor, avoiding the protection of the bearing after the high-speed rotor falls. Shock; when the magnetic suspension bearing system works again, the pushing force of the manual control manual drive assembly 4 to the support assembly 3 disappears, and the two groups of support assemblies 3 move in opposite directions in the axial direction under the action of the elastic member 5, so that the double cone sleeve There are radial gaps and axial gaps between the cylinder 2 and the two sets of support assemblies 3, and the magnetic suspension bearing system can work normally again, improving the reliability and safety of the protected bearings, and meeting the needs of the development of high-speed magnetic suspension bearing systems.

The embodiments of the present invention have been described in detail above in conjunction with the accompanying drawings, but the present invention is not limited to the above-mentioned embodiments, and within the scope of knowledge possessed by those of ordinary skill in the art, it can also be done without departing from the purpose of the present invention. various changes.

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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