CN106950062A - The test experimental bed of magnetic suspension bearing anti-dropping capability - Google Patents
The test experimental bed of magnetic suspension bearing anti-dropping capability Download PDFInfo
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- CN106950062A CN106950062A CN201710225374.7A CN201710225374A CN106950062A CN 106950062 A CN106950062 A CN 106950062A CN 201710225374 A CN201710225374 A CN 201710225374A CN 106950062 A CN106950062 A CN 106950062A
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- shell
- stator
- magnetic suspension
- protection
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- 239000000725 suspension Substances 0.000 title claims abstract description 77
- 238000012360 testing method Methods 0.000 title claims abstract description 40
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 51
- 238000007789 sealing Methods 0.000 claims description 29
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 claims description 8
- 239000011701 zinc Substances 0.000 claims description 8
- 229910052725 zinc Inorganic materials 0.000 claims description 8
- 229910000639 Spring steel Inorganic materials 0.000 claims description 4
- 230000005611 electricity Effects 0.000 claims description 4
- 230000002787 reinforcement Effects 0.000 claims description 2
- 238000001816 cooling Methods 0.000 claims 1
- 238000005259 measurement Methods 0.000 abstract description 12
- 238000011160 research Methods 0.000 abstract description 5
- 238000006073 displacement reaction Methods 0.000 description 15
- 239000000498 cooling water Substances 0.000 description 5
- 238000002474 experimental method Methods 0.000 description 5
- 239000000463 material Substances 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 238000009434 installation Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 229910000976 Electrical steel Inorganic materials 0.000 description 2
- 230000003321 amplification Effects 0.000 description 2
- 238000004458 analytical method Methods 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000003199 nucleic acid amplification method Methods 0.000 description 2
- 238000003825 pressing Methods 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 238000004364 calculation method Methods 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000013016 damping Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000003628 erosive effect Effects 0.000 description 1
- 239000003574 free electron Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012805 post-processing Methods 0.000 description 1
- 239000010453 quartz Substances 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 230000008054 signal transmission Effects 0.000 description 1
- 230000011664 signaling Effects 0.000 description 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- 238000004381 surface treatment Methods 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M13/00—Testing of machine parts
- G01M13/04—Bearings
- G01M13/045—Acoustic or vibration analysis
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M7/00—Vibration-testing of structures; Shock-testing of structures
- G01M7/08—Shock-testing
Abstract
The invention discloses a kind of test experimental bed of magnetic suspension bearing anti-dropping capability, including：Shell；Journal bearing stator, cod stator, motor stator and two protection bearings, journal bearing stator, cod Stator and electrical machine stator are installed in shell, and two protection bearings are installed in outside shell and are located at the left and right ends of shell respectively；Magnetic suspension shafting, magnetic suspension shafting is located in shell and shell is stretched out in left and right ends respectively；Two contact force measuring tables, two contact force measuring tables are arranged at outside shell and are located at the left and right ends of shell respectively, and protection bearing is arranged on contact force measuring table, and each contact force measuring table includes four piezoelectric transducers.According to the test experimental bed of the magnetic suspension bearing anti-dropping capability of the present invention, reliability and service life suitable for evaluating protection bearing, the anti-dropping capability of research protection bearing, and measurement accuracy is higher.
Description
Technical field
The present invention relates to magnetic suspension bearing technical field, in particular to a kind of magnetic suspension bearing anti-dropping capability
Test experimental bed.
Background technology
Magnetic suspension bearing makes shafting be rotated with bearing relative suspension using electromagnetic force, with without frictional resistance, operating essence
Degree is high, rigidity and the advantages of adjustable damping, is particluarly suitable for high rotating speed, low-loss, the occasion of low noise and uses.Protect bearing
(for example, rolling bearing) is the auxiliary support structure of magnetic suspension bearing, and one of its main function is when magnetic suspension bearing failure
When (for example, magnetic suspension shafting is fallen), protection bearing is capable of the shafting of temporary support high speed rotation, it is suspended or is pacified again
High-fall speed.
When the magnetic suspension shafting of high speed rotation is fallen, will occur tempestuously between shafting and the inner ring for protecting bearing
Collision and friction.Due to there is the gap of very little between the inner ring of shafting and protection bearing, therefore shafting is in falling process
Track response is extremely complex, including pendulum vibration, mixed film friction, spring and all-round friction.Between shafting and protection bearing
Contact force has amplitude and the characteristic of high frequency, and huge vibration likely results in protection bearing failure with impact, or even causes
Magnetic suspension bearing and rotor seriously burn.
At present, the test of the anti-dropping capability to protecting bearing also lacks effective technological means, therefore is protected for prediction
The service life of shield bearing also has many work not complete.Platform experiment is the important of the anti-dropping capability of research magnetic suspension bearing
Means, i.e. carry out the high speed drop test of magnetic suspension shafting by simulating the actual condition of magnetic suspension bearing operation, however it is logical
Different parameters often are studied to orbit of shaft center and the influence of vibration merely with platform experiment, are not related to protect the life-span of bearing to comment
Valency and anti-dropping capability research.
The content of the invention
It is contemplated that at least solving one of technical problem present in prior art.Therefore, the present invention proposes a kind of magnetic
The test experimental bed of suspension bearing anti-dropping capability, the test experimental bed of the magnetic suspension bearing anti-dropping capability, which is suitable to evaluate, to be protected
The reliability and service life of bearing, the anti-dropping capability of research protection bearing are protected, and measurement accuracy is higher.
The test experimental bed of magnetic suspension bearing anti-dropping capability according to embodiments of the present invention, including：Shell；Journal bearing
Stator, cod stator, motor stator and two protection bearings, the journal bearing stator, the cod stator and
The motor stator is installed in the shell, and two protection bearings are installed in outside the shell and are located at institute respectively
State the left and right ends of shell；Magnetic suspension shafting, the magnetic suspension shafting is located in the shell and institute is stretched out in left and right ends respectively
State shell, the magnetic suspension shafting be each passed through the journal bearing stator, the cod stator, the motor stator and
The protection bearing；Two contact force measuring tables, two contact force measuring tables are arranged at outside the shell and divided
Not Wei Yu the shell left and right ends, the protection bearing is arranged on the contact force measuring table, and each contact force is surveyed
Amount platform includes four piezoelectric transducers for being used to measure contact force between the protection bearing and the magnetic suspension shafting.
The test experimental bed of magnetic suspension bearing anti-dropping capability according to embodiments of the present invention, can simulate actual condition,
The reliability and service life of protection bearing, the anti-dropping capability of research protection bearing are evaluated, and to magnetic suspension shafting and is protected
The precision for protecting the measurement of the contact forces of bearing is higher.
In addition, the test experimental bed of magnetic suspension bearing anti-dropping capability according to embodiments of the present invention also has following add
Technical characteristic：
According to some embodiments of the present invention, the shell is fixed on bearing by spring steel pressure zone, and the contact force is surveyed
Measuring platform also includes frame, and the frame is installed on base with the bearing.
According to some embodiments of the present invention, the journal bearing stator is two and is located at the left and right of the shell respectively
Two ends, each journal bearing stator coordinates with the housing slot and is fixed on by housing end plug in the shell, described
Housing end plug is connected with the outer casing screw.
According to some embodiments of the present invention, the cod stator coordinate with the housing slot and including：Two
Sub- bearing stator；Stator shim, two sub- bearing stators are spaced apart by the stator shim, and two sub- bearings are determined
It is sub to be threadedly coupled on the housing with the stator shim.
According to some embodiments of the present invention, the magnetic suspension shafting includes：Main shaft, the left end and right-hand member of main shaft stretch out
The shell；Journal bearing rotor, thrust disc, rotor and protection axle sleeve, the journal bearing rotor, the thrust disc,
The rotor and the protection axle sleeve are determined with the journal bearing stator, the cod stator, the motor respectively
It is sub corresponding with the protection position of bearings, and the journal bearing rotor, the thrust disc and the rotor with it is described
Main shaft is interference fitted, and the protection axle sleeve coordinates with the gap of main reinforcement, and the protection axle sleeve is fixed on described by round nut
On main shaft.
According to some embodiments of the present invention, the test experimental bed of the magnetic suspension bearing anti-dropping capability also includes being used for
Cool down the motor water jacket of the motor stator and the shell, the motor water jacket be interference fitted with the motor stator and with institute
Housing slot cooperation is stated, the shell enters water provided with what the gap respectively between the shell and the motor water jacket was connected
Mouth and delivery port.
Advantageously, the water inlet is located at the outer casing bottom and the delivery port is located at the cover top portion.
In some embodiments of the invention, the left and right ends of the motor water jacket are arranged with first order sealing ring and
Secondary seal circle, the second level sealing ring of the motor water jacket left end is relative to the first order sealing ring adjacent to the electricity
The left side of machine water jacket, the second level sealing ring of the motor water jacket right-hand member is relative to the first order sealing ring adjacent to institute
State the right side of motor water jacket.
Further, leakage hole is additionally provided with the shell, the leakage hole is located at the adjacent first order sealing ring
Between the second level sealing ring.
Alternatively, being provided between the motor water jacket and the shell is used to prevent that the motor water jacket and the shell are rotten
The zinc bar of erosion, the zinc bar is installed on the housing by plug wire.
The additional aspect and advantage of the present invention will be set forth in part in the description, and will partly become from the following description
Obtain substantially, or recognized by the practice of the present invention.
Brief description of the drawings
Fig. 1 is the sectional view of the test experimental bed of magnetic suspension bearing anti-dropping capability according to embodiments of the present invention；
Fig. 2 is the solid of the shell of the test experimental bed of magnetic suspension bearing anti-dropping capability according to embodiments of the present invention
Figure；
Fig. 3 is the journal bearing stator of the test experimental bed of magnetic suspension bearing anti-dropping capability according to embodiments of the present invention
Stereogram；
Fig. 4 is the sub- bearing stator of the test experimental bed of magnetic suspension bearing anti-dropping capability according to embodiments of the present invention
Stereogram；
Fig. 5 is that the structure of the main shaft of the test experimental bed of magnetic suspension bearing anti-dropping capability according to embodiments of the present invention is shown
It is intended to.
Reference：
The test experimental bed 100 of magnetic suspension bearing anti-dropping capability,
Base 1, piezoelectric transducer 2, contact force measuring table 3, radial displacement transducer 4, housing end plug 5, motor pressing cover
6, shell 7, delivery port 8, motor water jacket 9, motor stator 10, lifting hole(eyelet) 11, spring steel pressure zone 12, thrust disc 13, journal bearing is fixed
Son 14, journal bearing rotor 15, protection bearing 16, round nut 17, shaft position sensor 18, sensor support base 19, frame 20,
Protect axle sleeve 21, cod stator 22, stator shim 23, bearing 24, leakage hole 25, water inlet 26, rotor 27, zinc bar
28, plug wire 29, first order sealing ring 30, second level sealing ring 31, main shaft 32.
Embodiment
Embodiments of the invention are described below in detail, the example of the embodiment is shown in the drawings, wherein from beginning to end
Same or similar label represents same or similar element or the element with same or like function.Below with reference to attached
The embodiment of figure description is exemplary, is only used for explaining the present invention, and is not considered as limiting the invention.
Below with reference to the accompanying drawings the test experimental bed of magnetic suspension bearing anti-dropping capability according to embodiments of the present invention is described
100。
As Figure 1-Figure 5, the test experimental bed 100 of magnetic suspension bearing anti-dropping capability according to embodiments of the present invention,
Including shell 7, journal bearing stator 14, cod stator 22, motor water jacket 9, motor stator 10, two protection bearings 16,
Magnetic suspension shafting and two contact force measuring tables 3.
Specifically, shell 7 is connected through a screw thread by spring steel pressure zone 12 and is fixed on bearing 24, and bearing 24 passes through bolt
It is connected on base 1.Lifting hole(eyelet) 11 is disposed with shell 7, suspension ring are threadedly coupled with lifting hole(eyelet) 11, to be moved easily shell 7.Radial axle
Hold stator 14, cod stator 22 and motor water jacket 9 and coordinated by gap and is assemblied in shell 7, to ensure between three
Axiality.
As shown in figure 1, two journal bearing stators 14 are located at the left and right ends of shell 7 respectively, housing end plug 5 passes through screw thread
It is fastened on shell 7 with fixed radial bearing stator 14, so, had both can guarantee that same between two journal bearing stators 14
Axle degree, is easy to repeatedly dismounting and installs again.Rubber sheet gasket is disposed between housing end plug 5 and journal bearing stator 14, so that footpath
Pressure suffered by bearing stator 14 is uniformly distributed.As shown in figure 3, journal bearing stator 14 uses ends of the earth rod structure, and radially
Bearing stator 14 is pressed into by silicon steel sheet stack.
As shown in figure 4, cod stator 22 is made up of two sub- bearing stators, two sub- bearing stators pass through stator pad
Piece 23 is spaced apart, and stator shim 23 ensure that the spacing and the depth of parallelism between the working face of two sub- bearing stators.In axial axis
Hold on the axial direction (left and right directions shown in figure) of stator 22, two sub- bearing stators and stator shim 23 pass through screw threads for fastening
Part is connected in shell 7；In the radial direction (above-below direction shown in figure) of cod stator 22, two sub- bearing stators
Coordinate respectively with the gap of shell 7 with stator shim 23, thus, the axiality between two sub- bearing stators had both been can guarantee that, and easily
In multiple dismounting and installation.
Motor stator 10 is connected on motor water jacket 9 by interference fit, and motor pressing cover 6 is threadedly coupled with shell 7 with solid
Determine motor water jacket 9.The bottom of shell 7 is provided with delivery port 8 provided with water inlet 26 and top, water inlet 26 and delivery port 8 respectively with
Gap connection between shell 7 and motor water jacket 9, meanwhile, water inlet 26 is connected by the discharge outlet of rubber tube and water pump, water outlet
Mouth 8 is connected by rubber tube with tank, and the water inlet of water pump is connected with tank, so, can be to motor water in motor rotation
Recirculated cooling water is passed through between set 9 and shell 7, to cool down motor stator 10 and shell 7.
The left end and right-hand member of motor water jacket 9 are arranged with first order sealing ring 30 and second level sealing ring 31, motor water jacket 9
The second level sealing ring 31 of left end relative to first order sealing ring 30 adjacent to the left side of motor water jacket 9, the right-hand member of motor water jacket 9
Second level sealing ring 31 relative to first order sealing ring 30 adjacent to the right side of motor water jacket 9, thus, the He of first order sealing ring 30
Second level sealing ring 31 plays a part of sealing recirculated cooling water.Further, leakage hole 25, leakage hole are disposed with shell 7
25 are located between adjacent first order sealing ring 30 and second level sealing ring 31, so as to will leak out in time to the sealing of this two-stage
Water discharge between circle.
Preferably, the zinc bar 28 as sacrificial anode is provided between motor water jacket 9 and shell 7, to prevent the He of motor water jacket 9
Shell 7 corrodes.Zinc bar 28 is arranged on shell 7 by plug wire 29, and plug wire 29 is threadedly coupled with shell 7, so as to reality
Existing fast assembling-disassembling and replacing zinc bar 28.
Magnetic suspension shafting includes main shaft 32, journal bearing rotor 15, thrust disc 13, rotor 27 and protection axle sleeve 21.
Journal bearing rotor 15, thrust disc 13 and rotor 27 are connected on main shaft 32 by interference fit, journal bearing rotor
15 are formed by silicon steel plate stacking.Protect axle sleeve 21 to be connected by gap on main shaft 32, used with the protection pairing of axle sleeve 21
Round nut 17 be connected through a screw thread and be fixed on main shaft 32, to lock protection axle sleeve 21, and protection axle sleeve 21 it is easily disassembled with
Change.
Respectively there is a measurement point in the left end and right-hand member of main shaft 32, four radial displacements are disposed with each measurement point
Sensor 4, i.e. arrange eight radial displacement transducers 4 at the two ends of main shaft 32, to measure the radial displacement of magnetic suspension shafting,
That is the displacement of magnetic suspension shafting radially, that is, the displacement of magnetic suspension shafting along the vertical direction.Wherein, each radial displacement
Sensor 4 is threadedly attached on housing end plug 5 and positioned at the outside of shell 7, and four radial displacements of each measurement point are passed
Sensor 4 is arranged on housing end plug 5 by the way of differential installation.Specifically, the offside on each direction of each measurement point
Two radial displacement transducers 4 are installed, for example, being respectively equipped with one on upper and lower, the forward and backward four direction of each measurement point
Radial displacement transducer 4, so as to eliminate the mechanical couplings composition in Dynamic Signal.
Shaft position sensor 18 be used to measuring main shaft 32 axial displacement (that is, main shaft 32 along the displacement on its axial direction,
Be exactly main shaft 32 in left-right direction on displacement), shaft position sensor 18, which is connected through a screw thread, is fixed on sensor support base 19
On, sensor support base 19 is bolted on base 1.Alternatively, radial displacement transducer 4 and shaft position sensor 18
It is current vortex sensor.
Two contact force measuring tables 3 are respectively arranged in the left and right sides of shell 7, and each contact force measuring table 3 includes
Frame 20, frame 20 is bolted on base 1.Protection bearing 16 and four is installed on each contact force measuring table 3
Individual piezoelectric transducer 2, protection bearing 16 is made up of the angular contact ball bearing that a pair are installed face-to-face, and piezoelectric transducer 2 is piezoelectricity
Quartz Force Sensor, contact force measuring table 3 is measured in magnetic suspension shafting falling process with protecting bearing by piezoelectric transducer 2
The amplitude and vibration frequency of 16 contact forces.
Specifically, four piezoelectric transducers 2 on each contact force measuring table 3 (i.e. front and back in the horizontal direction respectively
To) and vertical direction (above-below direction shown in figure) arrangement, so, the contact between magnetic suspension shafting and protection bearing 16
Power is delivered to vertical direction on the piezoelectric transducer 2 arranged along aforementioned four direction in the horizontal direction respectively, magnetic suspension shafting
Contact force between protection bearing 16 is the vector of contact force on aforementioned four direction.
The test experimental bed 100 of magnetic suspension bearing anti-dropping capability according to embodiments of the present invention is described with reference to the accompanying drawings
Operation principle.
During work, water pump is connected first, recirculated cooling water enters motor water jacket 9 from water inlet 26, recirculated cooling water is from going out
Motor water jacket 9 is left at the mouth of a river 8, and the recirculated cooling water leaked from first order sealing ring 30 can be discharged from leakage hole 25；Then, connect
Magnetic suspension shaft is tied up to five freedom by the power supply of logical radial displacement transducer 4 and shaft position sensor 18, current vortex sensor
Position signalling on degree is exported to controller；Secondly, the power supply of controller is opened, controller starts calculation procedure and output current
Command signal；Then, power amplifier is opened, the current command signal of controller is become to the electric current in coil, makes main shaft 32
Realize main shaft 32 it is radial and axial on suspension, so as to realize the closed loop feedback control of magnetic suspension bearing；And then open
Asynchronous machine, the motor stator 10 of asynchronous machine is connected with frequency converter, by the frequency for changing frequency converter, it is possible to achieve asynchronous electricity
Variable speed of the machine between 0-18000rpm.
Wherein, frequency converter and power amplifier are simultaneously closed off under given rotating speed, magnetic suspension under the rotating speed can be carried out
The free-electron model experiment of shafting.In the drop test of magnetic suspension shafting, the measurement of current vortex sensor is gathered by controller
Data, and send the measurement data collected to host computer；Each piezoelectric transducer 2 is communicated with signal conditioner, and signal is adjusted
The contact force signal that reason device passes over piezoelectric transducer 2 amplifies, and then adopts the contact force signal access after amplification at a high speed
Truck, high-speed collection card is again by the contact force signal transmission after amplification to host computer.Thus, current vortex sensing is completed by host computer
The display and storage of device and the live signal of piezoelectric transducer 2, are used for post processing.
In summary, the test experimental bed 100 of magnetic suspension bearing anti-dropping capability according to embodiments of the present invention, can be with complete
The drop test of magnetic suspension shafting under into 0-18000rpm initial speeds (i.e. different initial speeds), and record magnetic suspension shafting and fall
Shafting track and magnetic suspension shafting and the amplitude and vibration frequency of the contact forces of protection bearing 16 during falling；Meanwhile,
It can carry out protecting axle sleeve 21 with protecting the life experiment of bearing 16 by multiple drop test, the anti-dropping of bearing 16 is protected in analysis
Fall performance；Also, by using different materials or the protection axle sleeve 21 of surface treatment, it is possible to achieve at different materials or surface
Axle sleeve drop test and life experiment after reason, the anti-dropping capability of analysis protection bearing.
In addition, the test experimental bed 100 is fallen using two contact force measuring tables 3 to two protection bearings 16 simultaneously
Implement and test, two contact force measuring tables 3 use Split type structure with magnetic suspension bearing main body, reduce magnetic suspension bearing main part
Interference of the part to contact force measuring table 3, and using piezoelectric transducer 2 can measure magnetic suspension shafting with protection bearing 16 it
Between contact force changing rule.
In short, the test experimental bed 100 of magnetic suspension bearing anti-dropping capability according to embodiments of the present invention, can be in mould
Intend under actual condition, evaluate the reliability and anti-dropping capability of protection bearing 16；Guarantor can be measured using four piezoelectric transducers 2
The amplitude and vibration frequency for the contact force in all directions that shield bearing 16 is subject to, between magnetic suspension shafting and protection bearing 16
Contact force is the vector of the contact force measured by the piezoelectric transducer 2 on aforementioned four direction；Also, by by shell 7 with
Two contact force measuring tables 3 are individually fixed on base 1, reduce the support of shell 7 to measurement magnetic suspension shafting with
The interference of the contact forces of bearing 16 is protected, the measurement accuracy of contact force and vibration frequency in falling process is improved.
In the description of the invention, it is to be understood that term " " center ", " on ", " under ", "front", "rear", " left side ",
The orientation of the instruction such as " right side ", " up and down ", " left and right ", " front and rear ", " interior ", " outer ", " axial direction ", " radial direction ", " circumference " or position are closed
It is to be described based on orientation shown in the drawings or position relationship, to be for only for ease of the description present invention and simplifying, rather than indicates
Or imply that the device or element of meaning must have specific orientation, with specific azimuth configuration and operation, therefore be not understood that
For limitation of the present invention.In addition, term " first ", " second " are only used for describing purpose, and it is not intended that indicating or implying
Relative importance or the implicit quantity for indicating indicated technical characteristic.Thus, define " first ", the feature of " second " can
To express or implicitly include one or more this feature.In the description of the invention, unless otherwise indicated, " multiple "
It is meant that two or more.
In the description of the invention, it is necessary to illustrate, unless otherwise clearly defined and limited, term " installation ", " phase
Even ", " connection " should be interpreted broadly, for example, it may be being fixedly connected or being detachably connected, or be integrally connected；Can
To be mechanical connection or electrical connection；Can be joined directly together, can also be indirectly connected to by intermediary, Ke Yishi
The connection of two element internals.For the ordinary skill in the art, with concrete condition above-mentioned term can be understood at this
Concrete meaning in invention.
In the description of this specification, reference term " one embodiment ", " some embodiments ", " specific embodiment ", " excellent
Select embodiment ", the description of " example " or " some examples " etc. means to combine specific features, the knot that the embodiment or example are described
Structure, material or feature are contained at least one embodiment of the present invention or example.In this manual, to above-mentioned term
Schematic representation is not necessarily referring to identical embodiment or example.Moreover, specific features, structure, material or the spy of description
Point can in an appropriate manner be combined in any one or more embodiments or example.
Although an embodiment of the present invention has been shown and described, it will be understood by those skilled in the art that：Not
In the case of departing from the principle and objective of the present invention a variety of change, modification, replacement and modification can be carried out to these embodiments, this
The scope of invention is limited by claim and its equivalent.
Claims (10)
1. a kind of test experimental bed of magnetic suspension bearing anti-dropping capability, it is characterised in that including：
Shell；
Journal bearing stator, cod stator, motor stator and two protection bearings, the journal bearing stator, the axle
It is installed in bearing stator and the motor stator in the shell, two protection bearings are installed in outside the shell
And it is located at the left and right ends of the shell respectively；
Magnetic suspension shafting, the magnetic suspension shafting is located in the shell and the shell, the magnetic are stretched out in left and right ends respectively
Suspension shafting is each passed through the journal bearing stator, the cod stator, the motor stator and the protection bearing；
Two contact force measuring tables, two contact force measuring tables are arranged at outside the shell and are located at respectively described
The left and right ends of shell, the protection bearing is arranged on the contact force measuring table, and each contact force measuring table includes
Four piezoelectric transducers for measuring contact force between the protection bearing and the magnetic suspension shafting.
2. the test experimental bed of magnetic suspension bearing anti-dropping capability according to claim 1, it is characterised in that the shell
It is fixed on by spring steel pressure zone on bearing, the contact force measuring table also includes frame, the frame is pacified with the bearing
On base.
3. the test experimental bed of magnetic suspension bearing anti-dropping capability according to claim 1, it is characterised in that the radial direction
Bearing stator is two and is located at the left and right ends of the shell, each journal bearing stator and the housing slot respectively
Coordinate and be fixed on by housing end plug in the shell, the housing end plug is connected with the outer casing screw.
4. the test experimental bed of magnetic suspension bearing anti-dropping capability according to claim 1, it is characterised in that the axial direction
Bearing stator coordinate with the housing slot and including：
Two sub- bearing stators；
Stator shim, two sub- bearing stators are spaced apart by the stator shim, two sub- bearing stators and institute
State stator shim threaded connection on the housing.
5. the test experimental bed of magnetic suspension bearing anti-dropping capability according to claim 1, it is characterised in that the magnetcisuspension
Floating axle system includes：
Main shaft, the left end and right-hand member of main shaft stretch out the shell；
Journal bearing rotor, thrust disc, rotor and protection axle sleeve, the journal bearing rotor, the thrust disc, the electricity
Machine rotor and the protection axle sleeve respectively with the journal bearing stator, the cod stator, the motor stator and institute
State protection position of bearings correspondence, and the journal bearing rotor, the thrust disc and the rotor with the main shaft mistake
It is full of cooperation, the protection axle sleeve coordinates with the gap of main reinforcement, the protection axle sleeve is fixed on the main shaft by round nut.
6. the test experimental bed of the magnetic suspension bearing anti-dropping capability according to any one of claim 1-5, its feature exists
In, also including the motor water jacket for cooling down the motor stator and the shell, the motor water jacket and the motor stator
It is interference fitted and coordinates with the housing slot, the shell is provided with respectively between the shell and the motor water jacket
The water inlet and delivery port of gap connection.
7. the test experimental bed of magnetic suspension bearing anti-dropping capability according to claim 6, it is characterised in that it is described enter water
Mouth is located at the outer casing bottom and the delivery port is located at the cover top portion.
8. the test experimental bed of magnetic suspension bearing anti-dropping capability according to claim 6, it is characterised in that the motor
The left and right ends of water jacket are arranged with first order sealing ring and second level sealing ring, the second level of the motor water jacket left end
Sealing ring is relative to the first order sealing ring adjacent to the left side of the motor water jacket, described the of the motor water jacket right-hand member
Secondary seal circle is relative to the first order sealing ring adjacent to the right side of the motor water jacket.
9. the test experimental bed of magnetic suspension bearing anti-dropping capability according to claim 8, it is characterised in that the shell
On be additionally provided with leakage hole, the leakage hole is located between the adjacent first order sealing ring and the second level sealing ring.
10. the test experimental bed of magnetic suspension bearing anti-dropping capability according to claim 6, it is characterised in that the electricity
The zinc bar for being used for preventing that the motor water jacket and the shell from corroding is provided between machine water jacket and the shell, the zinc bar passes through
Plug wire is installed on the housing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710225374.7A CN106950062B (en) | 2017-04-07 | 2017-04-07 | Test experiment table for anti-drop performance of magnetic suspension bearing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710225374.7A CN106950062B (en) | 2017-04-07 | 2017-04-07 | Test experiment table for anti-drop performance of magnetic suspension bearing |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106950062A true CN106950062A (en) | 2017-07-14 |
| CN106950062B CN106950062B (en) | 2023-11-14 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710225374.7A Active CN106950062B (en) | 2017-04-07 | 2017-04-07 | Test experiment table for anti-drop performance of magnetic suspension bearing |
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| CN109655265A (en) * | 2018-12-29 | 2019-04-19 | 洛阳轴承研究所有限公司 | A kind of magnetic suspension shafting protection bearing performance test machine |
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