CN209195957U - A kind of combination bearing for rotary machine rotor - Google Patents
A kind of combination bearing for rotary machine rotor Download PDFInfo
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- CN209195957U CN209195957U CN201821992832.6U CN201821992832U CN209195957U CN 209195957 U CN209195957 U CN 209195957U CN 201821992832 U CN201821992832 U CN 201821992832U CN 209195957 U CN209195957 U CN 209195957U
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Abstract
The utility model relates to technical field of motors, especially a kind of combination bearing for rotary machine rotor, including cabinet, stator, rotor, Permanent-magnet bearing, thrust bearing and support device, the stator is located in the cabinet and is fixedly connected with the cabinet, the rotor is located in the stator, has air guide gap between the rotor and the stator；The both ends of the stator are respectively equipped with inlet channel, exhaust passage and air guide channel, and gas sequentially enters the air guide channel, the air guide gap by inlet channel and is supported to rotor, and the gas in the air guide gap is discharged by the exhaust passage；The Permanent-magnet bearing and the thrust bearing are set in the stator；The support device includes support cylinder, is supported for axle journal of the gas by air guide gap to the rotor.The utility model provides a kind of combination bearing for rotary machine rotor, can effectively increase the reliability of rotor, and can be at low cost.
Description
Technical field
The utility model relates to technical field of motors, especially a kind of combination bearing for rotary machine rotor.
Background technique
In existing rotating machinery, rotor in the axial direction, radially have support.Support can pass through lubrication, magnetic
Property, pneumatic bearing is realized, such as air bearing, and air bearing (also known as air-bearing) refers to (usually empty with gas
Gas, but it could also be possible that other gases) sliding bearing as lubricant.Air is smaller than oily viscosity, and high temperature resistant is pollution-free,
Thus it can be used in high speed machines, instrument and radioactive device, but its load-bearing capacity is lower than oil.Air bearing has apparent special
Point, pressure air film have leveling effect, thus with small vibration, and running accuracy is high；The viscosity of gas is very low, therefore frictional dissipation
Small, fever deformation is also small；Without the contact between object, it could be theoretically argued that not wearing, so the service life is long；Air bearing to environment without
Pollution, there is no need to consider sealing problem.Based on the above feature, gas-static spring bearing is widely used in aerospace work
In industry, semi-conductor industry and Ultra-precision Turning equipment and measuring instrument.
The common trait of these bearings is to increase the length of shaft.Other than pneumatic bearing, it is also necessary to complicated and expensive
Support system.Paillon pneumatic bearing does not need such support system, and rotation generates lift and acts on bearing, but mesh
They preceding bearing strength is much smaller than high output or the requirement of high pressure rotating machinery.
Utility model content
To solve the above-mentioned problems, the utility model provides a kind of combination bearing for rotary machine rotor, Neng Gouyou
Effect increases the reliability of rotor, and can reduce cost
To achieve the goals above, the technical solution adopted in the utility model are as follows:
A kind of combination bearing for rotary machine rotor, including cabinet, stator, rotor, Permanent-magnet bearing, thrust bearing and
Support device,
The stator is located in the cabinet and is fixedly connected with the cabinet, and the rotor is located in the stator, institute
Stating has air guide gap between rotor and the stator；Inlet channel, exhaust passage are equipped in the stator, at least provided with two
Guide ring and several air guide channels, the inlet channel are located at one end of the stator, and one end of the inlet channel is successively worn
The stator and the cabinet are crossed, the other end is connected to two guide rings, axial direction of at least described two guide rings along stator
Interval setting, each guide ring pass through several described around the air guide interstitial peripheral, each guide ring is set to
Connection is connected with the air guide gap in air guide channel；The exhaust passage is located at one far from the inlet channel in the stator
End, described exhaust passage one end sequentially pass through the stator and the cabinet, and connection is connected with the air guide gap in the other end；
The Permanent-magnet bearing is embedded in the stator and is fixedly connected with the stator, the opposite sides point of each guide ring
It She You not a Permanent-magnet bearing；The thrust bearing is located in the air guide gap, and side is fixedly connected with the stator；
The support device includes support cylinder, and the support cylinder is set in outside the axle journal of the rotor, and one end and
The cabinet is fixedly connected, and the support cylinder is equipped with incline structure towards the one side of the rotor, and the incline structure is separate
One end of the cabinet gradually favours the rotor, is equipped with perforative support stomata, the support gas in the support cylinder
Hole one end is connected connection with the air guide gap, and the other end is towards the axle journal；
The guide ring is passed sequentially through by the gas that the inlet channel enters, the air guide channel enters the air guide sky
Gap, the gas in the air guide gap flow to the exhaust passage and the support stomata respectively.
Further, several throttling chambers and throttle orifice are equipped in the thrust bearing, described throttling chamber one end is opened for circular arc
Connection is connected with the throttling chamber for mouth structure and the direction flowed towards gas, the other end, and the throttle orifice is more piece pore structure,
And through the thrust bearing, the radius of each knothole of throttle orifice is gradually decreased along the direction that gas flows, the section
The junction in the two adjacent sections hole of discharge orifice has arc structure.
Further, the support stomata includes the first stomata and the second stomata, first stomata and second gas
Hole is located on different cross sections, and first stomata and second stomata are spaced, and first stomata favours institute
The radial direction of axle journal is stated, second stomata is opposite with the first stomata inclined direction；Described the of two adjacent cross sectionals
The spacing of one stomata is equal with the spacing of second stomata of two adjacent cross sectionals；
The support device further includes adjustment barrel, iron block and electromagnet, and the adjustment barrel sliding sleeve is set to the branch and holds round
Outside column, perforation is equipped with adjustment hole, spacing and varying cross-section between the adjustment hole of varying cross-section in the adjustment barrel
Two adjacent first stomatas spacing it is equal；The iron block is fixedly connected with the adjustment barrel, and the electromagnet is equipped with two
A, two electromagnet are located at the two sides of the iron block, and fix with the stator, when a certain electromagnet is powered
When, the iron block is attracted, and the adjustment barrel is slided therewith, so that the adjustment hole and first stomata or second gas
Hole conducting.
Further, first stomata or second stomata be discharged into gas be discharged into direction and the rotor
Direction of rotation is opposite.
Further, the support cylindrical outer wall is concavely provided with sliding groove, is equipped with and the sliding groove in the adjustment barrel
The sliding shoe agreed with.
It further, further include fixed device, the fixed device includes fixing piece, roller bearing and four Pneumatic extension bars,
The stator is set there are four placing groove, and two placing grooves are close to one end of the axle journal, and in addition two placing grooves are separate
In one end of the axle journal, four Pneumatic extension bars are located in four placing grooves, Pneumatic extension bar one end with
The stator is fixedly connected, and the other end is fixedly connected with the fixing piece, the fixing piece far from the Pneumatic extension bar one
End is the arcuate structure agreed with the rotor, and is rotatablely connected with several roller bearings.
Further, the roller bearing is installed with buffering rubber ring.
Further, the rotor is equipped with shaft coupling far from one end of the axle journal.
The utility model has the beneficial effects that
1. by injecting gas in inlet channel, so that gas passes sequentially through guide ring, air guide channel enters air guide gap,
The gas in air guide gap flows to exhaust passage respectively, and the gas in air guide gap provides suspending power for rotor；Gas flows to branch and holds round
Column, since support cylinder is equipped with incline structure close to the one side of rotor, it is fixed that incline structure is gradually favoured close to one end of cabinet
Son forms the air film with rigidity and damping when gas flows to support cylinder, and air film is supported axle journal, close to cabinet one
The pressure of the axle journal of side is greater than the pressure of the other side, can increase stability when axle journal rotation；Gas in air guide gap is logical
It crosses support cylinder and thrust bearing is supported rotor, Permanent-magnet bearing generates magnetic force to rotor and is supported to rotor, from
And complicated and expensive support system is replaced, so that cost declines.
2. the gas in air guide gap passes through thrust bearing, under the action of throttling chamber, the additional appearance that can reduce
Product, to reduce the micro-vibration of rotor, improves the positioning accuracy and kinematic accuracy of rotor；The radius of each knothole of throttle orifice
Direction along gas flowing gradually decreases, and so that gas is undergone multiple throttling process, to increase throttle effect；Permanent-magnet bearing can
Magnetic suspension force is provided for rotor, increases the stability of rotor.
3. axle journal is in the rotation, air film itself will form, and the rotation of gas and rotor by supporting stomata to be discharged into
Turn contrary, the air film for supporting stomata to be formed by air film and axle journal itself can be made to contact with each other, increase axle journal and machine
The leakproofness of case, so that using also can guarantee its leakproofness in the environment in seabed.
4. the first stomata and the second stomata are spaced, the first stomata favours the radial direction of axle journal, the second stomata with
First stomata inclined direction is on the contrary, to which the first stomata and the second stomata are formed by the direction of rotation of air film on the contrary, by cutting
Change the first stomata or the second stomata, make rotor when forward or reverse, make support cylinder formed air film all with axle journal itself
Air film is opposite；Under the action of electromagnet, when a certain electromagnet is powered, when a certain electromagnet is powered, iron block is attracted, and is adjusted
Section cylinder slides therewith, so that adjustment hole is connected with the first stomata or the second stomata, realizes cutting for the first stomata and the second stomata
It changes.
5. the support force of rotor disappears, and rotor is pressed to stator by gravity when rotor stops and stops gas supply, it is easy
Rotor and stator is caused to damage, and when lacking support gas, the rotator inertia of rotor, which can arrive, causes rotor and stator to damage,
Under the action of fixed device, when rotor stops and stops gas supply, Pneumatic extension bar elongation, so that the roller bearing pair on fixing piece
Rotor is supported, and rotor and stator is avoided to be damaged, and can guarantee still to be fixed in stator after rotor stops
Heart position, convenient for the starting of next time.
Detailed description of the invention
Fig. 1 is the structural representation of the combination bearing for rotary machine rotor of one better embodiment of the utility model
Figure.
Fig. 2 is the stator section knot of the combination bearing for rotary machine rotor of one better embodiment of the utility model
Structure schematic diagram.
Fig. 3 is the thrust bearing knot of the combination bearing for rotary machine rotor of one better embodiment of the utility model
Structure schematic diagram.
Fig. 4 is the thrust bearing of the combination bearing for rotary machine rotor of one better embodiment of the utility model
Cross section structure schematic diagram.
Fig. 5 is the support device knot of the combination bearing for rotary machine rotor of one better embodiment of the utility model
Structure schematic diagram.
Fig. 6 is the A-A sectional view that cylinder is supported in Fig. 5.
Fig. 7 is the adjusting barrel structure of the combination bearing for rotary machine rotor of one better embodiment of the utility model
Schematic diagram.
Fig. 8 is the fixation device knot of the combination bearing for rotary machine rotor of one better embodiment of the utility model
Structure schematic diagram.
In figure, 1- cabinet, 2- stator, 21- inlet channel, 211- guide ring, 22- exhaust passage, 23- air guide channel, 24-
Placing groove, 3- rotor, 31- air guide gap, 32- axle journal, 4- Permanent-magnet bearing, 5- thrust bearing, 51- throttling chamber, 52- throttle orifice,
6- support device, 61- support cylinder, 611- incline structure, and 62- supports stomata, the first stomata of 621-, the second stomata of 622-, 63-
Adjustment barrel, 64- iron block, 65- electromagnet, 66- sliding groove, 661- sliding shoe, 7- fixing piece, 71- roller bearing, 711- buffer rubber ring,
72- Pneumatic extension bar, 8- shaft coupling.
Specific embodiment
The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model
Clearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole
Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are without making creative work
Every other embodiment obtained, fall within the protection scope of the utility model.
It should be noted that it can be directly on another component when component is referred to as " being fixed on " another component
Or there may also be components placed in the middle.When a component is considered as " connection " another component, it, which can be, is directly connected to
To another component or it may be simultaneously present component placed in the middle.When a component is considered as " being set to " another component, it
It can be and be set up directly on another component or may be simultaneously present component placed in the middle.Term as used herein is " vertical
", " horizontal ", "left", "right" and similar statement for illustrative purposes only.
Unless otherwise defined, all technical and scientific terms used herein are led with the technology for belonging to the utility model
The normally understood meaning of the technical staff in domain is identical.Terminology used in the description of the utility model herein only be
The purpose of description specific embodiment, it is not intended that in limitation the utility model.Term " and or " used herein includes
Any and all combinations of one or more related listed items.
Please referring also to Fig. 1 to Fig. 8, a kind of combination bearing for rotary machine rotor, including cabinet 1, stator 2, turn
Son 3, Permanent-magnet bearing 4, thrust bearing 5, support device 6 and fixed device.
Stator 2 is located in cabinet 1 and is fixedly connected with cabinet 1, and rotor 3 is located in stator 2, has between rotor 3 and stator 2
There is air guide gap 31.Inlet channel 21, exhaust passage 22 are equipped in stator 2, at least provided with two guide rings 211 and several air guides
Channel 23, inlet channel 21 are located at one end of stator 2, and one end of inlet channel 21 sequentially passes through stator 2 and cabinet 1, the other end
Two guide rings 211 are connected to, at least two guide rings 211 are arranged along the axially spaced-apart of stator 2, and each guide ring 211 surround and sets
It is placed in 31 periphery of air guide gap, each guide ring 211 is connected by several air guide channels 23 and the conducting of air guide gap 31.Exhaust is logical
Road 22 is located at one end in stator 2 far from inlet channel 21, and 22 one end of exhaust passage sequentially passes through stator 2 and cabinet 1, the other end
It is connected and connects with air guide gap 31, so that gas passes sequentially through guide ring 211 by inlet channel 21, air guide channel 23 enters air guide
Gap 31, the gas in air guide gap 31 flow to exhaust passage 22 respectively, to be provided using the gas in air guide gap 31 as rotor 3
Suspending power.
Permanent-magnet bearing 4 is embedded in stator 2 and is fixedly connected with stator 2, and the two sides of each guide ring 211 are equipped with permanent magnetism axis
Hold 4.Permanent-magnet bearing 4 can provide magnetic suspension force for rotor 3, increase the stability of rotor 3.
Thrust bearing 5 is located in air guide gap 31, and side is fixedly connected with stator 2.In the present embodiment, each air guide
Channel 23 is correspondingly provided with a thrust bearing 5.
Several throttling chambers 51 and throttle orifice 52 are equipped in thrust bearing 5, throttling 51 one end of chamber is circular arc hatch frame and court
The direction flowed to gas, the other end and the throttling conducting of chamber 51 connect, and throttle orifice 52 is more piece pore structure, and through thrust shaft
5 are held, the radius of each knothole of throttle orifice 52 is gradually decreased along the direction that gas flows, the connection in the two adjacent sections hole of throttle orifice 52
Place has arc structure.When gas in air guide gap 31 passes through thrust bearing 5, under the action of throttling chamber 51, it can reduce
The additional volume of gas to reduce the micro-vibration of rotor 3 improve the positioning accuracy and kinematic accuracy of rotor 3；Section
The radius of each knothole of discharge orifice 52 is gradually decreased along the direction that gas flows, and so that gas is undergone multiple throttling process, to increase
Throttle effect.
Support device 6 includes support cylinder 61, and support cylinder 61 is set in outside the axle journal 32 of rotor 3, and one end and cabinet 1
It is fixedly connected, support cylinder 61 is equipped with incline structure 611, the one end of incline structure 611 far from cabinet 1 close to the one side of rotor 3
Rotor 3 is gradually favoured, perforative support stomata 62 is equipped in support cylinder 61, support 62 one end of stomata is led with air guide gap 31
Lead to and connect, the other end is towards axle journal 32.One side due to support cylinder 61 close to rotor 3 is equipped with incline structure 611, and gas flows to
When supporting cylinder 61, the air film with rigidity and damping is formed, air film is supported axle journal 32, so that close to 1 side of cabinet
Axle journal 32 pressure be greater than the other side pressure, can increase axle journal 32 rotate when stability.
Supporting stomata 62 includes the first stomata 621 and the second stomata 622.First stomata 621 and the second stomata 622 are located at not
On same cross section, the first stomata 621 and the second stomata 622 are spaced, and the first stomata 621 favours the radial direction side of axle journal 32
To the second stomata 622 is opposite with 621 inclined direction of the first stomata.The spacing and two-phase of first stomata 621 of two adjacent cross sectionals
The spacing of second stomata 622 of adjacent cross section is equal.
In the present embodiment, it according to the direction of rotation of rotor 3, selects to be discharged into the first stomata 621 or the second stomata 622
Gas, it is opposite with the direction of rotation of rotor 3 with the direction for ensuring to flow after being discharged into of gas.Axle journal 32 in the rotation, from
Body will form air film, and by supporting stomata 62 to be discharged into the flow direction of rear gas with the direction of rotation of rotor 3 on the contrary, can make
The air film that support stomata 62 is formed by air film and axle journal 32 itself contacts with each other, and increases the leakproofness of axle journal 32 Yu cabinet 1,
So that using also can guarantee its leakproofness in the environment in seabed, and dust can be completely cut off.
First stomata 621 and the second stomata 622 are spaced, and the first stomata 621 favours the radial direction of axle journal 32, the
Two stomatas 622 and 621 inclined direction of the first stomata are on the contrary, to which the first stomata 621 and the second stomata 622 are formed by air film
Direction of rotation makes rotor 3 exist on the contrary, by opening the first stomata the second stomata of closure or opening the second stomata the first stomata of closure
When forward or reverse, keep the air film for supporting cylinder 61 to be formed all opposite with the air film of axle journal itself；
Support device 6 further includes adjustment barrel 63, iron block 64 and electromagnet 65, and 63 sliding sleeve of adjustment barrel is set to support cylinder 61
Outside, the perforation of adjustment barrel 63 is equipped with adjustment hole 631, and two of spacing and varying cross-section between the adjustment hole 631 of varying cross-section
The spacing of adjacent first stomata 621 is equal；Iron block 64 is fixedly connected with adjustment barrel 63, there are two electromagnet 65 is set, two electromagnetism
Iron 65 is located at the two sides of iron block 64, and fixed with stator 2, and when a certain electromagnet 65 is powered, iron block 64 is attracted, and adjusts
Cylinder 63 slides therewith, so that adjustment hole 631 and the first stomata 621 or the second stomata 622 are connected.Fig. 7 is that the first stomata 621 is sealed
It closes, the state that the second stomata 622 is opened.
In the present embodiment, the formed air film of the first stomata 621 rotates forward the direction of rotation phase of formed air film with rotor 3
Instead, the formed air film of the second stomata 622 is opposite with the direction of rotation that rotor 3 inverts formed air film.When rotor 3 rotates forward, control
An electromagnet 65 energization is made, iron block 64 is attracted, and adjustment barrel 63 is slided therewith, so that 621 weight of adjustment hole 631 and the first stomata
It closes, and adjustment barrel 63 closes the second stomata 622；When rotor 3 inverts, controls another electromagnet 65 and be powered, iron block 64 is inhaled
It closes, adjustment barrel 63 is slided therewith, so that adjustment hole 631 is overlapped with the second stomata 622, and adjustment barrel 63 is by the first stomata 621
It is all opposite with the air film of axle journal itself to realize the air film for making that cylinder 61 is supported to be formed for closing.
In the present embodiment, support 61 outer wall of cylinder is concavely provided with sliding groove 66, is equipped with and sliding groove 66 in adjustment barrel 63
The sliding shoe 661 agreed with.Sliding groove 66 and sliding shoe 661 can prevent support cylinder 61 from pivot offset occur, so that adjustment hole
631 are not turned on the first stomata 62 or the second stomata 622.
Fixed device includes fixing piece 7, roller bearing 71 and four Pneumatic extension bars 72, and stator 2 is set there are four placing groove 24, and two
Placing groove 24 is close to one end of axle journal 32, and in addition two placing grooves 24 are away from one end of axle journal 32, four Pneumatic extension bars 72
It is located in four placing grooves 24,72 one end of Pneumatic extension bar is fixedly connected with stator 2, the other end and the fixed company of fixing piece 7
It connects, the one end of fixing piece 7 far from Pneumatic extension bar 72 is the arcuate structure agreed with rotor 3, and rotates and connect with several roller bearings 71
It connects.
When rotor 3 stops operating and stops gas supply, the support force of rotor 3 disappears, and rotor 3 is pressed to stator by gravity
2, it is easy to cause rotor 3 and stator 2 to damage, and when lacking support gas, the rotator inertia of rotor 3, which can also arrive, leads to rotor
3 and stator 2 damage, under the action of fixed device, when rotor 3 stops operating and stops gas supply, the elongation of Pneumatic extension bar 72,
So that the roller bearing 71 on fixing piece 7 is supported rotor, rotor 3 and stator 2 is avoided to be damaged, and from capable of guaranteeing rotor
The center of stator 2 is fixed on after 3 stoppings, still convenient for the starting of next time.
Roller bearing 71 is installed with buffering rubber ring 711, and buffering rubber ring 711 can buffer rotor 3, avoids rotor 3 direct
It collides with roller bearing 71.
Rotor 3 is equipped with shaft coupling 8 far from one end of axle journal 32.Shaft coupling 8 can cross rotor and carry out overload protection, avoid turning
Son 3 bears excessive load.
The direction of the utility model gas flowing is to pass sequentially through guide ring 211 by the gas that inlet channel 21 enters, lead
Gas channel 23 enters air guide gap 31, and the gas in air guide gap 31 flows to exhaust passage 22 and support stomata 62 respectively.In gas
Under effect, entire cabinet is in the state of sealing, rotor can be carried out to the device in cabinet and stator carries out water proof and dust proof
Protection, and suspending power can be provided for rotor 3 and axle journal 32.
Claims (8)
1. a kind of combination bearing for rotary machine rotor, which is characterized in that including cabinet (1), stator (2), rotor (3),
Permanent-magnet bearing (4), thrust bearing (5) and support device (6),
The stator (2) is located in the cabinet (1) and is fixedly connected with the cabinet (1), and it is described fixed that the rotor (3) is located at
In sub (2), there are air guide gap (31) between the rotor (3) and the stator (2)；It is logical equipped with air inlet in the stator (2)
Road (21), exhaust passage (22), at least provided with two guide rings (211) and several air guide channels (23), the inlet channel
(21) it is located at the one end of the stator (2), one end of the inlet channel (21) sequentially passes through the stator (2) and the cabinet
(1), the other end is connected to two guide rings (211), axially spaced-apart of at least described two guide rings (211) along stator (2)
Setting, for each guide ring (211) around air guide gap (31) periphery is set to, each guide ring (211) is logical
It crosses several air guide channels (23) and the air guide gap (31) conducting connects；The exhaust passage (22) is located at the stator
(2) far from the one end of the inlet channel (21) in, described exhaust passage (22) one end sequentially passes through the stator (2) and described
Cabinet (1), the other end and the air guide gap (31) conducting connect；
The Permanent-magnet bearing (4) is embedded in the stator (2) and is fixedly connected with the stator (2), each guide ring (211)
Opposite sides is respectively equipped with a Permanent-magnet bearing (4)；The thrust bearing (5) is located in the air guide gap (31), and one
Side is fixedly connected with the stator (2)；
The support device (6) includes support cylinder (61), and support cylinder (61) is set in the axle journal of the rotor (3)
(32) outside, and one end is fixedly connected with the cabinet (1), and support cylinder (61) is equipped with towards the one side of the rotor (3)
Incline structure (611), the incline structure (611) gradually favour the rotor (3), institute far from the one end of the cabinet (1)
It states and is equipped with perforative support stomata (62), the support stomata (62) one end and the air guide gap (31) in support cylinder (61)
Conducting connection, the other end is towards the axle journal (32)；
The guide ring (211) is passed sequentially through by the gas that the inlet channel (21) enter, the air guide channel (23) enters
The air guide gap (31), the gas of the air guide gap (31) flow to the exhaust passage (22) and the support stomata respectively
(62)。
2. a kind of combination bearing for rotary machine rotor according to claim 1, it is characterised in that: the thrust shaft
It holds and is equipped with several throttling chambers (51) and throttle orifice (52) in (5), the throttling chamber (51) one end is circular arc hatch frame and direction
The direction of gas flowing, the other end and the throttling chamber (51) conducting connect, and the throttle orifice (52) is more piece pore structure, and is passed through
It is through at the thrust bearing (5), the radius of each knothole of the throttle orifice (52) is gradually decreased along the direction that gas flows, described
The junction in the two adjacent sections hole of throttle orifice (52) has arc structure.
3. a kind of combination bearing for rotary machine rotor according to claim 1, it is characterised in that: the support gas
Hole (62) includes the first stomata (621) and the second stomata (622), first stomata (621) and the second stomata (622) position
In on different cross sections, first stomata (621) and second stomata (622) are spaced, first stomata
(621) radial direction of the axle journal (32), second stomata (622) and the first stomata (621) inclination side are favoured
To opposite；The spacing of first stomata (621) of two adjacent cross sectionals and second stomata (622) of two adjacent cross sectionals
Spacing it is equal；
The support device (6) further includes adjustment barrel (63), iron block (64) and electromagnet (65), adjustment barrel (63) sliding sleeve
Outside set on the support cylinder (61), perforation is equipped with adjustment hole (631) on the adjustment barrel (63), the tune of varying cross-section
The spacing of spacing first stomata (621) adjacent with the two of varying cross-section between knothole (631) is equal；The iron block
(64) it is fixedly connected with the adjustment barrel (63), there are two the electromagnet (65) sets, two electromagnet (65) positions respectively
In the two sides of the iron block (64), and it is fixed with the stator (2), when a certain electromagnet (65) is powered, the iron block
(64) it is attracted, the adjustment barrel (63) is slided therewith, so that the adjustment hole (631) and first stomata (621) or institute
State the second stomata (622) conducting.
4. a kind of combination bearing for rotary machine rotor according to claim 3, it is characterised in that: first gas
Hole (621) or second stomata (622) be discharged into gas to be discharged into direction opposite with the direction of rotation of the rotor (3).
5. a kind of combination bearing for rotary machine rotor according to claim 3, it is characterised in that: the branch is held round
Column (61) outer wall is concavely provided with sliding groove (66), and the sliding shoe agreed with the sliding groove (66) is equipped in the adjustment barrel (63)
(661)。
6. a kind of combination bearing for rotary machine rotor according to claim 1, it is characterised in that: further include fixing
Device, the fixed device include fixing piece (7), roller bearing (71) and four Pneumatic extension bars (72), and the stator (2) is equipped with four
A placing groove (24), two placing grooves (24) are close to one end of the axle journal (32), and in addition two placing grooves (24) are remote
From in one end of the axle journal (32), four Pneumatic extension bars (72) are located in four placing grooves (24), the gas
Dynamic telescopic rod (72) one end is fixedly connected with the stator (2), and the other end is fixedly connected with the fixing piece (7), the fixation
Part (7) is the arcuate structure agreed with the rotor (3) far from one end of the Pneumatic extension bar (72), and with several rollings
Axis (71) rotation connection.
7. a kind of combination bearing for rotary machine rotor according to claim 6, it is characterised in that: the roller bearing
(71) it is installed with buffering rubber ring (711).
8. a kind of combination bearing for rotary machine rotor according to claim 1, it is characterised in that: the rotor
(3) one end far from the axle journal (32) is equipped with shaft coupling (8).
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821992832.6U CN209195957U (en) | 2018-11-30 | 2018-11-30 | A kind of combination bearing for rotary machine rotor |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821992832.6U CN209195957U (en) | 2018-11-30 | 2018-11-30 | A kind of combination bearing for rotary machine rotor |
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| CN209195957U true CN209195957U (en) | 2019-08-02 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109236860A (en) * | 2018-11-30 | 2019-01-18 | 广西恒达电机科技有限公司 | A kind of combination bearing for rotary machine rotor |
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2018
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109236860A (en) * | 2018-11-30 | 2019-01-18 | 广西恒达电机科技有限公司 | A kind of combination bearing for rotary machine rotor |
| CN109236860B (en) * | 2018-11-30 | 2024-04-16 | 广西恒达电机科技有限公司 | Combined bearing for rotary machinery rotor |
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