CN205446400U - Magnetic suspension bearing subassembly and compressor - Google Patents
Magnetic suspension bearing subassembly and compressor Download PDFInfo
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- CN205446400U CN205446400U CN201620261929.4U CN201620261929U CN205446400U CN 205446400 U CN205446400 U CN 205446400U CN 201620261929 U CN201620261929 U CN 201620261929U CN 205446400 U CN205446400 U CN 205446400U
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- working clearance
- iron core
- magnetic suspension
- thrust disc
- installation portion
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Abstract
The utility model relates to a magnetic suspension bearing subassembly and compressor. The magnetic suspension bearing subassembly includes magnetic suspension bearing, fixed casing and work clearance adjustment device, magnetic suspension bearing includes first iron core, second iron core and thrust disc, work clearance adjustment device along radial set up between inside week of footpath of fixed casing and thrust disc and along the axial setting between fixed casing and second iron core, work clearance adjustment device's axial one end and second iron core butt are and fix to be equipped with between casing and the second iron core and keep away the space crack, and the length that can change between work clearance adjustment device's the axial both ends realizes the adjustment to magnetic suspension bearing work clearance, make the work clearance conform to with the design value. The utility model discloses can effectively avoid under the prerequisite to machining error that magnetic suspension bearing secondary operation led to the fact and coil damage risk, conveniently realize the adjustment to magnetic suspension bearing work clearance.
Description
Technical field
This utility model relates to magnetic suspension bearing technical field, particularly to a kind of magnetic suspension shaft bearing assembly and compressor.
Background technology
Magnetic suspension bearing has that mechanical wear is little, noise is little, low power consumption and other advantages, is widely used in ultrahigh speed plant equipment.
Fig. 1 shows that prior art includes the structural representation of magnetic suspension bearing and the magnetic suspension shaft bearing assembly of fixing housing.nullAs shown in Figure 1，In the prior art，Magnetic suspension shaft bearing assembly includes magnetic suspension bearing and fixing housing 5 '，Wherein，Magnetic suspension bearing includes the first iron core 1 '、Second iron core 2 '、Thrust disc 3 '、Rotating shaft 4 '、First coil 6 ' and the second coil 7 '，Thrust disc 3 ' is fixed in rotating shaft 4 '，First iron core 1 ' and the second iron core 2 ' are along the both sides being axially disposed within thrust disc 3 ' of thrust disc 3 '，First iron core 1 ' has installs the first coil holding part of first coil 6 ' and for the first installation portion being connected with fixing housing 5 '，Second iron core 2 ' has installs the second coil holding part of the second coil 7 ' and for the second installation portion being connected with fixing housing 5 '，The axial direction of thrust disc 3 ' is all fitted between the first installation portion and fixing housing 5 ' and between the second installation portion and fixing housing 5 ' setting，Spacing distance (fitted position between the end face of the end face away from thrust disc 3 ' side of the first installation portion and the close thrust disc 3 ' side of the second installation portion，For matching with fixing housing 5 ') it is L2 '，Spacing distance (the first working clearance) between first coil holding part and thrust disc 3 ' is X1 '，Spacing distance (the second working clearance) between second coil holding part and thrust disc 3 ' is X2 '，The axial length of thrust disc 3 ' is L0 '，Therefore，If definition the first working clearance X1 ' is the working clearance of magnetic suspension bearing with the second working clearance X2 ' sum，Then the working clearance of magnetic suspension bearing is equal to X1 '+X2 '.
The bearing capacity of magnetic suspension bearing depends primarily on the working clearance, and when the working clearance of magnetic suspension bearing occurs deviation, the bearing capacity that will result in magnetic suspension bearing can not meet load request, in some instances it may even be possible to causes the problems such as magnetic suspension inefficacy, product rejection.Visible, whether the real work gap of magnetic suspension bearing is consistent with design load is to weigh whether magnetic suspension bearing bearing capacity meets the key index that design requires.Being difficult to avoid that yet with processing and rigging error, often there is deviation in the real work gap of magnetic suspension bearing and design load, are in this case accomplished by being adjusted the working clearance of magnetic suspension bearing.
Based on existing magnetic suspension bearing modular construction, the method for turning or grinding iron core end face is currently mainly taked to realize the adjustment to the working clearance, specific as follows:
(1) when the working clearance is Δ L more than design load and the two deviation, by the end face of the close thrust disc 3 ' side of the second installation portion (be the second installation portion in FIG with fitted position L2 ' corresponding left side) turning Δ L to the right, the second installation portion and fixing housing 5 ' is made to produce the interval of Δ L in the axial direction, second iron core 2 ' entirety is moved to the left Δ L again makes the second installation portion again fit with fixing housing 5 ', then the working clearance reduces Δ L, thus the working clearance is adjusted to be consistent with design load, it is achieved adjust the purpose of working clearance.
(2) when the working clearance is Δ L less than design load and the two deviation, by end face (being the right side corresponding with the working clearance of first coil holding part in FIG) the turning Δ L to the left of the close thrust disc 3 ' side of first coil holding part, or, by end face (being the left side corresponding with the working clearance of the second coil holding part in FIG) the turning Δ L to the right of the close thrust disc 3 ' side of the second coil holding part, then the working clearance increases Δ L, thus the working clearance is adjusted to be consistent with design load, it is achieved adjust the purpose of working clearance.
Although the method for above-mentioned turning or grinding iron core end face is capable of the adjustment to the working clearance, but owing to needs carry out secondary operations by turning or grinding to iron core, therefore, processing cost is higher, adjustment difficulty is bigger, and form and position tolerance during secondary operations is difficult to ensure that, the most just it is being easily caused iron core working position；In addition, easily first coil 6 ' or the second coil 7 ' being caused damage when turning or grinding iron core end face, so that affecting the normal work of magnetic suspension bearing, causing electrical safety hidden danger, even it is also possible to directly contribute scrapping of first coil 6 ' or the second coil 7 ', increases production cost.
Utility model content
One to be solved in the utility model technical problem is that: on the premise of the mismachining tolerance avoiding secondary operations to be caused and coil damage risk, it is achieved the adjustment to the magnetic suspension bearing working clearance.
nullAccording to first aspect of the present utility model，This utility model provides a kind of magnetic suspension shaft bearing assembly，It includes magnetic suspension bearing、Fixing housing and working clearance adjusting apparatus，Wherein，Magnetic suspension bearing includes the first iron core、Second iron core and thrust disc，First iron core and the second iron core are along the both sides being axially disposed within thrust disc of thrust disc，There is between first iron core and thrust disc the first working clearance，There is between second iron core and thrust disc the second working clearance，First iron core and the second iron core are all fixing with fixing housing to be connected，Working clearance adjusting apparatus is along being axially disposed between fixing housing and the second iron core between the radially inner circumference being radially arranged in fixing housing and the thrust disc of thrust disc and along thrust disc，Axial one end of working clearance adjusting apparatus abuts with the second iron core and fixes has empty avoiding gap between housing and the second iron core，Working clearance adjusting apparatus can adjust for the first working clearance with the second working clearance sum to being consistent with design load.
Alternatively, working clearance adjusting apparatus being axially disposed between the first iron core and the second iron core along thrust disc, and the axial other end of working clearance adjusting apparatus and the first iron core abut.
Alternatively, magnetic suspension bearing also includes first coil and the second coil, first iron core has installs the first coil holding part of first coil and for the first installation portion being connected with fixing housing, second iron core has installs the second coil holding part of the second coil and for the second installation portion being connected with fixing housing, working clearance adjusting apparatus being axially disposed between the first installation portion and the second installation portion along thrust disc, the axial two ends of working clearance adjusting apparatus abut against with the first installation portion and the second installation portion respectively.
Alternatively, the radial dimension of the second installation portion is more than the radial dimension of the first installation portion, fixing housing has the step auxiliary section coordinated with the first installation portion and the second installation portion, step auxiliary section has the first construction section and diameter is more than the first construction section and the second construction section being connected with the first construction section by step surface, the end face away from thrust disc side of step surface and the first installation portion is fitted, and is provided with empty avoiding gap between the end face of the end face away from the first construction section of the second construction section and the close thrust disc side of the second installation portion.
Alternatively, the end face of the close thrust disc side of the first installation portion relative to the end face of the close thrust disc side of first coil holding part away from thrust disc, the end face of the close thrust disc side of the second installation portion relative to the end face of the close thrust disc side of the second coil holding part away from thrust disc.
Alternatively, the axial other end of working clearance adjusting apparatus abuts against with fixing housing.
Alternatively, working clearance adjusting apparatus includes multiple working clearance adjustment part, length between the axial two ends of multiple working clearance adjustment parts is the most different, can adjust the different deviations between the first working clearance and the second working clearance sum and design load by arranging different working clearance adjustment parts between fixing housing and the second iron core.
Alternatively, working clearance adjustment part is working clearance adjustment ring.
Alternatively, the outer radial periphery of working clearance adjustment ring abuts against with the radially inner circumference of fixing housing.
Alternatively, the adjustable in length between the axial two ends of working clearance adjusting apparatus is to making for the first working clearance be consistent with design load with the second working clearance sum.
Alternatively, working clearance adjusting apparatus includes the first adjustment ring, the second adjustment ring and locking piece, one end of first adjustment ring has the first screw thread, one end of second adjustment ring has the second screw thread, second screw thread and the first threaded engagement are to connect the first adjustment ring and the second adjustment ring and by the length relatively rotated between the axial two ends that can regulate working clearance adjusting apparatus of the first adjustment ring and the second adjustment ring so that the first working clearance and the second working clearance sum are consistent with design load, and locking piece is for locking the first screw thread and the relative position of the second screw thread.
According to second aspect of the present utility model, this utility model additionally provides a kind of compressor, and it includes such as magnetic suspension shaft bearing assembly of the present utility model.
Magnetic suspension shaft bearing assembly provided by the utility model, owing to including the working clearance adjusting apparatus being axially set between fixing housing and the second iron core along thrust disc, and axial one end of this working clearance adjusting apparatus abuts and fixes between housing with the second iron core and has empty avoiding gap between the second iron core, therefore, this utility model can adjust the length being installed in addition with between the axial two ends put to realize the first iron core and the adjustment of the spacing of the second iron core by changing the working clearance, it is thus possible to adjusted for the first working clearance with the second working clearance sum to being consistent with design load, and then ensure that the bearing capacity of magnetic suspension bearing meets design requirement.Owing to magnetic suspension bearing need not carry out secondary operations, therefore, this utility model is it can be avoided that a series of problem brought because of secondary operations error, and owing to iron core end face need not carry out turning or grinding, therefore, also coil will not be caused damage.Visible, this utility model can carry out mismachining tolerance that secondary operations caused and on the premise of coil damages risk being prevented effectively to magnetic suspension bearing, conveniently realizes the adjustment to the magnetic suspension bearing working clearance.
By being described in detail exemplary embodiment of the present utility model referring to the drawings, further feature of the present utility model and advantage thereof will be made apparent from.
Accompanying drawing explanation
In order to be illustrated more clearly that this utility model embodiment or technical scheme of the prior art, the accompanying drawing used required in embodiment or description of the prior art will be briefly described below, apparently, accompanying drawing in describing below is only embodiments more of the present utility model, for those of ordinary skill in the art, on the premise of not paying creative work, it is also possible to obtain other accompanying drawing according to these accompanying drawings.
Fig. 1 illustrates the structural representation of magnetic suspension shaft bearing assembly in prior art.
Fig. 2 illustrates the structural representation of the magnetic suspension shaft bearing assembly of this utility model one embodiment.
In figure:
1 ', first iron core；2 ', second iron core；3 ', thrust disc；4 ', rotating shaft；5 ', fixing housing；6 ', first coil；7 ', second iron core；
1, the first iron core；2, the second iron core；3, thrust disc；4, rotating shaft；5, fixing housing；6, first coil；7, the second iron core；8, working clearance adjustment ring.
Detailed description of the invention
Below in conjunction with the accompanying drawing in this utility model embodiment, the technical scheme in this utility model embodiment is clearly and completely described, it is clear that described embodiment is only a part of embodiment of this utility model rather than whole embodiments.Description only actually at least one exemplary embodiment is illustrative below, never as to this utility model and application thereof or any restriction of use.Based on the embodiment in this utility model, the every other embodiment that those of ordinary skill in the art are obtained under not carrying out creative work premise, broadly fall into the scope of this utility model protection.
May be not discussed in detail for technology, method and apparatus known to person of ordinary skill in the relevant, but in the appropriate case, described technology, method and apparatus should be considered to authorize a part for description.
In description of the present utility model, it will be appreciated that, the noun of locality is as " front, after, on, under, left, right ", " laterally, vertically, vertically, level " and " top, the end " etc. indicated orientation or position relationship be normally based on orientation shown in the drawings or position relationship, it is for only for ease of description this utility model and simplifies description, in the case of illustrating on the contrary, these nouns of locality do not indicate that and imply that the device of indication or element must have specific orientation or with specific azimuth configuration and operation, therefore it is not intended that restriction to this utility model protection domain；The noun of locality " inside and outside " refers to inside and outside the profile relative to each parts itself.
In description of the present utility model; it will be appreciated that; the word such as " first ", " second " is used to limit parts; it is intended merely to facilitate and corresponding parts are distinguished; as there is no Stated otherwise; above-mentioned word does not has particular meaning, therefore it is not intended that restriction to this utility model protection domain.
Fig. 2 shows the structural representation of the magnetic suspension shaft bearing assembly of this utility model one embodiment.nullWith reference to Fig. 2，Magnetic suspension shaft bearing assembly provided by the utility model，Including magnetic suspension bearing、Fixing housing 5 and working clearance adjusting apparatus，Wherein，Magnetic suspension bearing includes the first iron core 1、Second iron core 2 and thrust disc 3，First iron core 1 and the second iron core 2 are along the both sides being axially disposed within thrust disc 3 of thrust disc 3，There is between first iron core 1 and thrust disc 3 first working clearance X1，There is between second iron core 2 and thrust disc 3 second working clearance X2，First iron core 1 and the second iron core 2 are all fixing with fixing housing 5 to be connected，Working clearance adjusting apparatus is along being axially disposed between fixing housing 5 and the second iron core 2 between the radially inner circumference being radially arranged in fixing housing 5 and the thrust disc 3 of thrust disc 3 and along thrust disc 3，Axial one end of working clearance adjusting apparatus abuts with the second iron core 2 and fixes between housing 5 and the second iron core 2 has empty avoiding gap Y，Working clearance adjusting apparatus can adjust the first working clearance X1 and the second working clearance X2 sum to being consistent with design load.
This utility model abuts with the second iron core 2 and fixes the working clearance adjusting apparatus between housing 5 and the second iron core 2 with empty avoiding gap Y by arranging axial one end between the fixing housing 5 and the second iron core 2 of magnetic suspension shaft bearing assembly, make this utility model can realize to the first working clearance X1 and the second working clearance X2 sum (for convenience by the length between the axial two ends of working clearance adjusting apparatus, the hereinafter referred to as working clearance) adjustment, ensure that the working clearance is consistent (referring to that the working clearance is equal with design load or the two deviation is within error allowed band " being consistent " herein) with design load, and then ensure that the bearing capacity of magnetic suspension bearing meets design requirement.Owing to magnetic suspension bearing need not be carried out secondary operations, therefore, this utility model is it can be avoided that carried out, by magnetic suspension bearing, the series of problems that secondary operations error is brought, and owing to the first iron core 1 end face or the second iron core 2 end face need not be carried out turning or grinding, therefore, also first coil 6 or the second coil 7 will not be caused damage.Visible, this utility model can be on the premise of being prevented effectively from mismachining tolerance that secondary operations caused and coil damage risk, it is achieved the adjustment to the magnetic suspension bearing working clearance.
Working clearance adjusting apparatus of the present utility model being axially set between fixing housing 5 and the second iron core 2 along thrust disc 3, specifically, it can being axially disposed between fixing housing 5 and the second iron core 2 directed along thrust disc 3, the i.e. axial two ends of working clearance adjusting apparatus abut against with fixing housing 5 and the second iron core 2 respectively；It can also be arranged between fixing housing 5 and the second iron core 2 indirectly along the axial of thrust disc 3, and such as, the axial two ends of working clearance adjusting apparatus abut against with the first iron core 1 and the second iron core 2 respectively.
The first embodiment as working clearance adjusting apparatus, working clearance adjusting apparatus can include multiple working clearance adjustment part, length between the axial two ends of multiple working clearance adjustment parts is the most different, this makes it possible to by arranging the different deviations that different working clearance adjustment parts adjusts between working clearance and design load between fixing housing 5 from the second iron core 2.
As the second embodiment of working clearance adjusting apparatus, the adjustable in length between the axial two ends of working clearance adjusting apparatus is to making the working clearance be consistent with design load.Different from the first embodiment, in this second embodiment, working clearance adjusting apparatus self i.e. can change the length between oneself axial two ends, so during the working clearance is adjusted, different working clearance adjustment parts need not be changed again, and have only to change the axial length of working clearance adjusting apparatus self, so that the adjustment to the working clearance is more convenient.
An embodiment as this second embodiment working clearance adjusting apparatus, working clearance adjusting apparatus can include the first adjustment ring, second adjustment ring and locking piece, one end of first adjustment ring has the first screw thread, one end of second adjustment ring has the second screw thread, second screw thread and the first threaded engagement are to connect the first adjustment ring and the second adjustment ring and by the length relatively rotated between the axial two ends that can regulate working clearance adjusting apparatus of the first adjustment ring and the second adjustment ring so that the working clearance is consistent with design load, locking piece is for locking the first screw thread and the relative position of the second screw thread.Wherein, locking piece can be such as lock pin or lock bolt.Adjusting apparatus adjusts to suitable axial length in the intervals of business, can simultaneously in the first adjustment ring and on the second lock ring radially (or axially) beat locking hole, the locking hole coordinated with lock pin is unthreaded hole, the locking hole coordinated with lock bolt is screwed hole, realizes the locking of the first adjustment ring and the relative position of the second adjustment ring in afterwards lock pin or lock bolt being fitted into locking hole.
Owing to being threaded connection between the first adjustment ring and the second adjustment ring, therefore can be by the first adjustment ring and the axial length relatively rotating adjustment working clearance adjusting apparatus self easily of the second adjustment ring, and owing to being provided with locking piece, therefore after by working clearance adjusting apparatus axial length regulation to desired value, the relative position of the first adjustment ring and the second adjustment ring can be locked by this locking piece, the length between the axial two ends of working clearance adjustment ring is made to be difficult to occur mistuning whole, ensure the accuracy of working clearance adjustment, and the working clearance adjusting apparatus after locking also is able to the first installation portion or the second installation portion are formed more stable support location.
Below in conjunction with the embodiment shown in Fig. 2, above-mentioned first embodiment is described further.
As shown in Figure 2, in this embodiment, magnetic suspension shaft bearing assembly includes magnetic suspension bearing, fixing housing 5 and working clearance adjusting apparatus, wherein, working clearance adjusting apparatus is arranged between the first iron core 1 and the second iron core 2, and working clearance adjusting apparatus includes multiple working clearance adjustment ring 8 as working clearance adjustment part.
Magnetic suspension bearing includes first iron core the 1, second iron core 2, first coil the 6, second coil 7 and thrust disc 3.Wherein, thrust disc 3 is fixed in rotating shaft 4 and can rotate together along with rotating shaft 4, namely thrust disc 3 forms the rotor of magnetic suspension bearing；First coil 6 is arranged on the first iron core 1, second coil 7 is arranged on the second iron core 2, first iron core 1 and the second iron core 2 are along the both sides being axially disposed within thrust disc 3 of thrust disc 3, there is between first iron core 1 and thrust disc 3 first working clearance X1, there is between second iron core 2 and thrust disc 3 second working clearance X2, and the first iron core 1 and the second iron core 2 are all fixing with fixing housing 5 to be connected, thus the first iron core 1, first coil 6, second iron core 2 forms the stator of magnetic suspension bearing together with the second iron core 7, so rotate under the drive of rotating shaft 4 when thrust disc 3 and time first coil 6 and the second coil 7 are passed through electric current, magnetic field will be produced between stator and the rotor of magnetic suspension bearing, the magnetic force in magnetic field can make rotor suspension in the air.
Specifically, in this embodiment, first iron core 1 has first coil holding part and the first installation portion, second iron core 2 has the second coil holding part and the second installation portion, wherein, first coil holding part is used for installing first coil 6, second coil holding part is for installing the second coil 7, the first coil holding part being provided with first coil 6 and the second coil holding part of being provided with the second coil 7 cooperatively form magnetic field with thrust disc 3, and the first installation portion and the second installation portion are then respectively used to and fix housing 5 and be connected to realize fixing of the first iron core 1 and the second iron core 2.Can be achieved a fixed connection by the securing member such as screw or bolt between first installation portion and described second installation portion and fixing housing 5.The first working clearance X1 is formed between first coil holding part and thrust disc 3, the second working clearance X2 is formed between second coil holding part and thrust disc 3, the axial length of thrust disc 3 is L0, then the spacing distance between first coil holding part and the second coil holding part is L1=X1+L0+X2, and the working clearance (the first working clearance X1 and the second working clearance X2 sum) of magnetic suspension bearing is equal to X1+X2.
Working clearance adjustment ring 8 is along between the radially inner circumference being radially disposed at fixing housing 5 and the thrust disc 3 of thrust disc 3, simultaneously, working clearance adjustment ring 8 being axially set between the first iron core 1 and the second iron core 2 along thrust disc 3, and the axial two ends of working clearance adjustment ring 8 abut respectively with the first installation portion and the second installation portion, namely the length (hereinafter referred to as axial length) between the axial two ends of working clearance adjustment ring 8 is equal to the spacing distance L3 between the first installation portion and the second installation portion, so when the working clearance adjustment ring 8 selecting axially different length is arranged between the first installation portion and the second installation portion, spacing distance L3 between first installation portion and the second installation portion then can change.
In order to the spacing distance L3 changed easily between the first installation portion and the second installation portion, as shown in Figure 2, in this embodiment, there is between second installation portion and fixing housing 5 empty avoiding gap Y, and along the axial laminating of thrust disc 3 between the first installation portion and fixing housing 5, so when the axial length of working clearance adjustment ring 8 changes and changes so that the spacing distance L3 between the first installation portion and the second installation portion, empty avoiding gap Y also can change, such that it is able to adjust the working clearance of magnetic suspension bearing easily, the working clearance is made to keep being consistent with design load.
nullSpecifically，As shown in Figure 2，In this embodiment，The radial dimension of the second installation portion is more than the radial dimension of the first installation portion，Fixing housing 5 has the step auxiliary section coordinated with the first installation portion and the second installation portion，Step auxiliary section has the first construction section and diameter is more than the first construction section and the second construction section being connected with the first construction section by step surface，End face away from thrust disc 3 side (left side of the first installation portion) laminating of step surface and the first installation portion，It is provided with empty avoiding gap Y between the end face (right side of the second installation portion) of the end face away from the first construction section of the second construction section and close thrust disc 3 side of the second installation portion，So，Axially spaced-apart between the end face (right side of the second installation portion) of the end face away from thrust disc 3 side (left side of the first installation portion) of the first installation portion and close thrust disc 3 side of the second installation portion is L2，And the difference of L2 with L3 is the first installation portion along the axial thickness of thrust disc 3.Based on this setting, working clearance headspace can either be adjusted for working clearance adjustment ring 8, the convenient working clearance adjustment ring 8 by selecting axially different length realizes the adjustment to the working clearance, ensure that again the fixing fastness of stator and the compactedness of magnetic suspension bearing modular construction.
Further, in order to make working clearance adjustment ring 8 more stably be arranged at along the radial direction of thrust disc 3 between radially inner circumference and the thrust disc 3 of fixing housing 5, as shown in Figure 2, in this embodiment, the outer radial periphery of working clearance adjustment ring 8 abuts against with the radially inner circumference of fixing housing 5, so radial displacement of working clearance adjustment ring 8 is fixed housing 5 and is limited, working clearance adjustment ring 8 is therefore, it is possible to by between more stable radially inner circumference and the thrust disc 3 being arranged at fixing housing 5, without producing play up and down in the radial direction.And, owing to the axial two ends of working clearance adjustment ring 8 abut with the first installation portion and the second installation portion respectively, the axial displacement of working clearance adjustment ring 8 is limited by the first installation portion and the second installation portion, therefore, axial displacement and the radial displacement of the working clearance adjustment ring 8 of this embodiment are all limited, working clearance adjustment ring 8 can preferably be positioned, simultaneously because this location is all to be formed by abutting, during adjusting the working clearance by replacing working clearance adjustment ring 8, unnecessary fixture need not be dismounted, therefore, this embodiment can also easy disassembly, make the adjustment to the working clearance more time saving and energy saving, improve working clearance regulated efficiency.
In addition, as shown in Figure 2, in this embodiment, the end face (being the right side of the first installation portion in fig. 2) of close thrust disc 3 side of the first installation portion relative to the end face (being the right side of first coil holding part in fig. 2) of close thrust disc 3 side of first coil holding part away from thrust disc 3, the end face (being the left side of the second installation portion in fig. 2) of close thrust disc 3 side of the second installation portion relative to the end face (being the left side of the second coil holding part in fig. 2) of close thrust disc 3 side of the second coil holding part away from thrust disc 3, spacing distance L3 between such first installation portion and the second installation portion is more than the spacing distance L1 between first coil holding part and the second coil holding part, the setting of working clearance adjustment ring 8 it is thus possible to be more convenient for.
Owing to the working clearance adjusting apparatus of this embodiment includes multiple working clearance adjustment ring 8 with axially different length, therefore, when the working clearance is less than design load, can select and there is larger axis to the working clearance adjustment ring 8 of length to increase the working clearance, and when the working clearance is more than design load, the working clearance adjustment ring 8 with relatively small axial length then can be selected to reduce the working clearance, thus realize the adjustment to the working clearance, it is made to keep being consistent with design load all the time, it is ensured that the bearing capacity of magnetic suspension bearing meets design requirement.Visible, magnetic suspension shaft bearing assembly based on this embodiment needs to dismount magnetic suspension shaft bearing assembly when being adjusted the working clearance, and its concrete disassembly process is as follows:
(1) stator module is assembled: first coiling first coil 6 and the second coil 7, then, first coil 6 is installed on first coil holding part, first coil 6 and the first iron core 1 is made to form the first stator module, and the second coil 7 is installed on the second coil holding part, make the second coil 7 and the second iron core 2 form the second stator module；
(2) assemble rotor assembly: by thrust disc 3 hot charging to rotating shaft 4, form rotor assembly；
(3) the first stator module, fixing housing 5 and rotor assembly are assembled: be installed on fixing housing 5 by the first installation portion of the first iron core 1 by the first stator module, reassemble rotor assembly, and make the left side of thrust disc 3 form the first working clearance X1 with the right side of the first coil holding part of the first iron core 1；
(4) assembly work gap adjustment ring 8: make the axial left end of working clearance adjustment ring 8 and the right side of the first installation portion abut, and make the outer radial periphery of working clearance adjustment ring 8 abut against with the radially inner circumference of fixing housing 5；
(5) the second stator module is assembled: make the left side of the second installation portion of the second iron core 2 abut against with the axial right-hand member of working clearance adjustment ring 8, now, empty avoiding gap Y is formed between left side and the fixing housing 5 of the second installation portion, and second coil holding part left side and the right side of thrust disc 3 between form the second working clearance X2, by the securing member such as screw or bolt, the second installation portion is fixed with fixing housing 5.
(6) size (generally being detected) of the first working clearance X1 and the second working clearance X2 sum is detected by displacement transducer, judge whether the first working clearance X1 and the second working clearance X2 sum are consistent with design load, namely judge whether the working clearance is consistent with design load；
(7) when there is deviation between working clearance and design load, dismantle the second stator module and working clearance adjustment ring 8, replace corresponding length working clearance adjustment ring 8, and repeat the above steps (4)-(6) until the working clearance be consistent with design load.
Visible, magnetic suspension shaft bearing assembly based on this embodiment, can have the working clearance adjustment ring 8 of axially different length by apolegamy to be assembled in magnetic suspension bearing realize the adjustment to the working clearance, ensure that the bearing capacity of magnetic suspension bearing meets design requirement, form and position tolerance is easily guaranteed that, Adjustment precision is higher.Relative to prior art is passed through turning or the method for adjustment of grinding iron core end face, this embodiment carries out secondary operations to the first iron core 1 or the second iron core 2 again owing to need not, therefore, adjustment to the working clearance is convenient, time saving and energy saving, and owing to no longer there is the Form and position error caused by secondary operations, also therefore be able to improve the Adjustment precision to the working clearance；Additionally, due to without again the first iron core 1 or the second iron core 2 being carried out turning or grinding, and hence it is also possible to be prevented effectively from first coil 6 or the damage of the second coil 7, such that it is able to prevent from causing electrical safety hidden danger, it is ensured that the normal work of magnetic suspension bearing.And, the working clearance adjustment ring 8 of this embodiment is not susceptible to service failure, can utilize with secondary recovery, therefore, this embodiment can also effectively save resource, reduce production cost.
The magnetic suspension shaft bearing assembly of this embodiment, owing to being provided with empty avoiding gap Y between the second installation portion and fixing housing 5, therefore, it is possible to be the adjustment headspace of working clearance, abut with the first installation portion and the second installation portion respectively due to the axial two ends of working clearance adjustment ring 8 again, therefore, second iron core 2 can be formed and support location by working clearance adjustment ring 8 all the time, although this allows for being provided with empty avoiding gap Y, but still fixedly securing the second iron core 2 can be formed, it is ensured that the assembly precision of the second iron core 2.Visible, this embodiment makes to fix and has empty avoiding gap Y by arranging working clearance adjusting apparatus and this working clearance adjusting apparatus between housing 5 and the second iron core 2, make magnetic suspension shaft bearing assembly can either conveniently realize the adjustment to the working clearance, disclosure satisfy that again the matching requirements of magnetic suspension bearing.
Magnetic suspension shaft bearing assembly of the present utility model can apply in the products such as compressor, use magnetic suspension shaft bearing assembly of the present utility model can preferably meet the requirement to magnetic suspension bearing bearing capacity of the products such as compressor, improve the service behaviour of the products such as compressor.
The foregoing is only exemplary embodiment of the present utility model, not in order to limit this utility model, all within spirit of the present utility model and principle, any modification, equivalent substitution and improvement etc. made, within should be included in protection domain of the present utility model.
Claims (12)
- null1. a magnetic suspension shaft bearing assembly，It is characterized in that，Described magnetic suspension shaft bearing assembly includes magnetic suspension bearing、Fixing housing (5) and working clearance adjusting apparatus，Described magnetic suspension bearing includes the first iron core (1)、Second iron core (2) and thrust disc (3)，Described first iron core (1) and described second iron core (2) are along the both sides being axially disposed within described thrust disc (3) of described thrust disc (3)，There is between described first iron core (1) and described thrust disc (3) the first working clearance (X1)，There is between described second iron core (2) and described thrust disc (3) the second working clearance (X2)，Described first iron core (1) and described second iron core (2) are all fixing with described fixing housing (5) to be connected，Described working clearance adjusting apparatus is along being axially disposed between described fixing housing (5) and described second iron core (2) between the radially inner circumference being radially arranged in described fixing housing (5) and the described thrust disc (3) of described thrust disc (3) and along described thrust disc (3)，Axial one end of described working clearance adjusting apparatus abuts with described second iron core (2) and has empty avoiding gap (Y) between described fixing housing (5) and described second iron core (2)，Described working clearance adjusting apparatus can adjust described first working clearance (X1) with described second working clearance (X2) sum to being consistent with design load.
- Magnetic suspension shaft bearing assembly the most according to claim 1, it is characterized in that, described working clearance adjusting apparatus being axially disposed between described first iron core (2) and described second iron core (3) along described thrust disc (3), and the axial other end of described working clearance adjusting apparatus abuts with described first iron core (2).
- Magnetic suspension shaft bearing assembly the most according to claim 2, it is characterized in that, described magnetic suspension bearing also includes first coil (6) and the second coil (7), described first iron core (1) has installs the first coil holding part of described first coil (6) and for the first installation portion being connected with described fixing housing (5), described second iron core (2) has installs the second coil holding part of described second coil (7) and for the second installation portion being connected with described fixing housing (5), described working clearance adjusting apparatus being axially disposed between described first installation portion and described second installation portion along described thrust disc (3), the axial two ends of described working clearance adjusting apparatus abut against with described first installation portion and described second installation portion respectively.
- Magnetic suspension shaft bearing assembly the most according to claim 3, it is characterized in that, the radial dimension of described second installation portion is more than the radial dimension of described first installation portion, described fixing housing (5) has the step auxiliary section coordinated with described first installation portion and described second installation portion, described step auxiliary section has the first construction section and diameter is more than described first construction section and the second construction section being connected with described first construction section by step surface, the end face away from described thrust disc (3) side of described step surface and described first installation portion is fitted, it is provided with described empty avoiding gap (Y) between the end face of the end face away from described first construction section of described second construction section and close described thrust disc (3) side of described second installation portion.
- Magnetic suspension shaft bearing assembly the most according to claim 3, it is characterized in that, the end face of close described thrust disc (3) side of described first installation portion relative to the end face of close described thrust disc (3) side of described first coil holding part away from described thrust disc (3), the end face of close described thrust disc (3) side of described second installation portion relative to the end face of close described thrust disc (3) side of described second coil holding part away from described thrust disc (3).
- Magnetic suspension shaft bearing assembly the most according to claim 1, it is characterised in that the axial other end of described working clearance adjusting apparatus abuts against with described fixing housing (5).
- 7. according to the arbitrary described magnetic suspension shaft bearing assembly of claim 1-6, it is characterized in that, described working clearance adjusting apparatus includes multiple working clearance adjustment part, length between the axial two ends of the plurality of working clearance adjustment part is the most different, can adjust the different deviations between described first working clearance (X1) and described second working clearance (X2) sum and described design load by arranging different working clearance adjustment parts between described fixing housing (5) from described second iron core (2).
- Magnetic suspension shaft bearing assembly the most according to claim 7, it is characterised in that described working clearance adjustment part is working clearance adjustment ring (8).
- Magnetic suspension shaft bearing assembly the most according to claim 8, it is characterised in that the outer radial periphery of described working clearance adjustment ring (8) abuts against with the radially inner circumference of described fixing housing (5).
- 10. according to the arbitrary described magnetic suspension shaft bearing assembly of claim 1-6, it is characterized in that, the adjustable in length between the axial two ends of described working clearance adjusting apparatus is consistent with described design load with described second working clearance (X2) sum to making described first working clearance (X1).
- 11. magnetic suspension shaft bearing assemblies according to claim 10, it is characterized in that, described working clearance adjusting apparatus includes the first adjustment ring, second adjustment ring and locking piece, one end of described first adjustment ring has the first screw thread, one end of described second adjustment ring has the second screw thread, described second screw thread with described first threaded engagement to be connected described first adjustment ring and described second adjustment ring and by the length relatively rotated between the axial two ends that can regulate described working clearance adjusting apparatus of described first adjustment ring and described second adjustment ring so that described first working clearance (X1) and described second working clearance (X2) sum are consistent with described design load, described locking piece is for locking the described first screw thread relative position with described second screw thread.
- 12. 1 kinds of compressors, it is characterised in that described compressor includes the magnetic suspension shaft bearing assembly as described in claim 1-11 is arbitrary.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620261929.4U CN205446400U (en) | 2016-03-31 | 2016-03-31 | Magnetic suspension bearing subassembly and compressor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620261929.4U CN205446400U (en) | 2016-03-31 | 2016-03-31 | Magnetic suspension bearing subassembly and compressor |
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| Publication Number | Publication Date |
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| CN205446400U true CN205446400U (en) | 2016-08-10 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201620261929.4U Withdrawn - After Issue CN205446400U (en) | 2016-03-31 | 2016-03-31 | Magnetic suspension bearing subassembly and compressor |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105650117A (en) * | 2016-03-31 | 2016-06-08 | 珠海格力节能环保制冷技术研究中心有限公司 | Magnetic bearing component and compressor |
| CN107100932A (en) * | 2017-06-12 | 2017-08-29 | 珠海格力节能环保制冷技术研究中心有限公司 | Axial magnetic suspension bearing, magnetic suspension system and compressor |
| CN108443321A (en) * | 2018-05-08 | 2018-08-24 | 山东锋钢机械设备有限公司 | A kind of permanent magnetism type magnetic suspension bearing pair |
| CN110985543A (en) * | 2019-12-09 | 2020-04-10 | 珠海格力电器股份有限公司 | Magnetic suspension bearing control method and device, magnetic suspension bearing and compressor |
| CN115355251A (en) * | 2022-10-19 | 2022-11-18 | 山东天瑞重工有限公司 | Axial magnetic bearing, magnetic suspension motor and magnetic suspension vacuum pump |
-
2016
- 2016-03-31 CN CN201620261929.4U patent/CN205446400U/en not_active Withdrawn - After Issue
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105650117A (en) * | 2016-03-31 | 2016-06-08 | 珠海格力节能环保制冷技术研究中心有限公司 | Magnetic bearing component and compressor |
| WO2017166911A1 (en) * | 2016-03-31 | 2017-10-05 | 珠海格力节能环保制冷技术研究中心有限公司 | Magnetic levitation bearing assembly and compressor |
| CN105650117B (en) * | 2016-03-31 | 2017-12-19 | 珠海格力节能环保制冷技术研究中心有限公司 | A kind of magnetic suspension shaft bearing assembly and compressor |
| US10767692B2 (en) | 2016-03-31 | 2020-09-08 | Gree Green Refrigeration Technology Center Co., Ltd. Of Zhuhai | Magnetic levitation bearing assembly and compressor |
| CN107100932A (en) * | 2017-06-12 | 2017-08-29 | 珠海格力节能环保制冷技术研究中心有限公司 | Axial magnetic suspension bearing, magnetic suspension system and compressor |
| CN108443321A (en) * | 2018-05-08 | 2018-08-24 | 山东锋钢机械设备有限公司 | A kind of permanent magnetism type magnetic suspension bearing pair |
| CN110985543A (en) * | 2019-12-09 | 2020-04-10 | 珠海格力电器股份有限公司 | Magnetic suspension bearing control method and device, magnetic suspension bearing and compressor |
| CN115355251A (en) * | 2022-10-19 | 2022-11-18 | 山东天瑞重工有限公司 | Axial magnetic bearing, magnetic suspension motor and magnetic suspension vacuum pump |
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