CN107179148A - Measure magnetic suspension shafting and the platform of the contact forces of protection bearing - Google Patents
Measure magnetic suspension shafting and the platform of the contact forces of protection bearing Download PDFInfo
- Publication number
- CN107179148A CN107179148A CN201710225044.8A CN201710225044A CN107179148A CN 107179148 A CN107179148 A CN 107179148A CN 201710225044 A CN201710225044 A CN 201710225044A CN 107179148 A CN107179148 A CN 107179148A
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- magnetic suspension
- platform
- contact forces
- bearing supports
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- 239000000725 suspension Substances 0.000 title claims abstract description 67
- 238000005259 measurement Methods 0.000 claims abstract description 50
- 238000009434 installation Methods 0.000 claims description 13
- 230000013011 mating Effects 0.000 claims description 7
- 230000036316 preload Effects 0.000 claims description 7
- 230000002093 peripheral effect Effects 0.000 claims description 3
- 230000008901 benefit Effects 0.000 abstract description 4
- 238000000034 method Methods 0.000 description 5
- 230000008569 process Effects 0.000 description 4
- 239000000463 material Substances 0.000 description 3
- 238000011160 research Methods 0.000 description 3
- 238000010276 construction Methods 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000004044 response Effects 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000006978 adaptation Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000013016 damping Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 238000007667 floating Methods 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L1/00—Measuring force or stress, in general
- G01L1/16—Measuring force or stress, in general using properties of piezoelectric devices
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L5/00—Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes
- G01L5/0009—Force sensors associated with a bearing
- G01L5/0019—Force sensors associated with a bearing by using strain gages, piezoelectric, piezo-resistive or other ohmic-resistance based sensors
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L5/00—Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes
- G01L5/0028—Force sensors associated with force applying means
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Magnetic Bearings And Hydrostatic Bearings (AREA)
Abstract
The invention discloses a kind of platform for the contact forces for measuring magnetic suspension shafting and protection bearing, including：Frame；Multiple pre-tightening apparatus, the pre-tightening apparatus is located in the frame；Bearing supports for supporting the protection bearing, the bearing supports are located in the frame；Multiple tablettings are pressed to the bearing supports by multiple tablettings, multiple pre-tightening apparatus along the radial direction of the protection bearing respectively；Multiple piezoelectric transducers for measuring the bearing supports and the contact forces of each tabletting, each piezoelectric transducer is clamped between the bearing supports and the tabletting.According to the measurement magnetic suspension shafting of the present invention and the platform of the contact forces of protection bearing, have the advantages that measurement accuracy is higher.
Description
Technical field
The present invention relates to magnetic suspension bearing technical field, in particular to one kind measurement magnetic suspension shafting and protection axle
The platform of the contact forces held.
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.And between different tracks response
One of significant difference is shafting and the amplitude and frequency of the contact forces of protection bearing, thus, accurately measures shafting and guarantor
The contact force and vibration frequency protected between bearing, reliability and research that bearing is protected for evaluating protect the anti-drop of bearing
Can be extremely important.
Platform experiment is the important means for the anti-dropping capability for studying magnetic suspension bearing, i.e. by simulating magnetic suspension bearing
The actual condition of operation carries out the high speed drop test of magnetic suspension shafting, so as to evaluate the reliability of protection bearing and anti-drop
Performance.However, because the magnetic suspension bearing in correlation technique is same by magnetic suspension bearing stator with protection bearing assembling
In housing, the supporting role of magnetic suspension bearing stator can produce interference to measurement result, accordingly, it is difficult to which accurately measurement shafting is with protecting
The contact force protected between bearing.
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 survey
Measure magnetic suspension shafting and the platform of the contact forces of protection bearing, the measurement magnetic suspension shafting and the contact forces of protection bearing
Platform have the advantages that measurement accuracy is higher.
Measurement magnetic suspension shafting according to embodiments of the present invention and the platform of the contact forces of protection bearing, including：Frame；
Multiple pre-tightening apparatus, the pre-tightening apparatus is located in the frame；Bearing supports for supporting the protection bearing, it is described
Bearing supports are located in the frame；Multiple tablettings, multiple pre-tightening apparatus respectively will along the radial direction of the protection bearing
Multiple tablettings press to the bearing supports；For measuring the bearing supports and the contact forces of each tabletting
Multiple piezoelectric transducers, each piezoelectric transducer is clamped between the bearing supports and the tabletting.
Measurement magnetic suspension shafting according to embodiments of the present invention and the platform of the contact forces of protection bearing, reduce magnetcisuspension
Interference of the supporting role of floating bearing stator to measurement result, is tied up in falling process with protecting axle so as to improve magnetic suspension shaft
The measurement accuracy of contact force and vibration frequency between holding.
In addition, the platform of the contact forces of measurement magnetic suspension shafting according to embodiments of the present invention with protecting bearing also has
The technical characteristic added as follows：
According to some embodiments of the present invention, the bearing supports construction is rectangular and has and the protection bearing
The mating hole of outer peripheral face adaptation, multiple pre-tightening apparatus respectively along the longitudinal direction press to multiple tablettings with above-below direction
The bearing supports.
In some embodiments of the invention, the frame have the unlimited installation cavity in the left and right sides and with the installation cavity
Multiple mounting holes of connection, the bearing supports are located in the installation cavity and the pre-tightening apparatus be at least partially disposed at it is described
In mounting hole.
Further, each pre-tightening apparatus includes：Thread bush, the screw thread is set in the mounting hole；Pretension
Screw and pre-load nut, the pre-loading screw along the longitudinal direction press to the tabletting with a direction in above-below direction described
Bearing supports, the pre-loading screw is threadedly coupled with the thread bush and is arranged on the frame by the pre-load nut
On.
Alternatively, the tabletting is located in the mounting hole and is configured to discount vibram outlet shape.
Advantageously, the frame, which is provided with, is used to prevent the holding screw that circumferentially rotates of the tabletting along the tabletting,
The holding screw, which stops, to be against on the perisporium for being formed as plane of the tabletting.
In a preferred embodiment of the invention, the bearing supports are configured to square, and the mating hole is located at described
The center of bearing supports.
According to some embodiments of the present invention, the platform of contact forces of the measurement magnetic suspension shafting with protecting bearing is also
Including：For carrying out the first spacing straight pin to the piezoelectric transducer in the lateral direction, first straight pin is located at
On the bearing supports.
According to some embodiments of the present invention, the platform of contact forces of the measurement magnetic suspension shafting with protecting bearing is also
Including：End cap for carrying out axial limiting to the protection bearing, the end cap is located on the bearing supports.
Together with the end cap is connected by screw with the bearing supports, the end cap and the bearing supports it
Between be provided with pad.
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 measurement magnetic suspension shafting according to embodiments of the present invention and the structure of the platform of the contact forces of protection bearing
Schematic diagram；
Fig. 2 is measurement magnetic suspension shafting according to embodiments of the present invention and the section view of the platform of the contact forces of protection bearing
Figure；
Fig. 3 is measurement magnetic suspension shafting according to embodiments of the present invention and the frame of the platform of the contact forces of protection bearing
Structural representation；
Fig. 4 is measurement magnetic suspension shafting according to embodiments of the present invention and the frame of the platform of the contact forces of protection bearing
Structural representation；
Fig. 5 is measurement magnetic suspension shafting according to embodiments of the present invention and the bearing of the platform of the contact forces of protection bearing
The structural representation of support member；
Fig. 6 is measurement magnetic suspension shafting according to embodiments of the present invention and the bearing of the platform of the contact forces of protection bearing
The structural representation of support member；
Fig. 7 is measurement magnetic suspension shafting according to embodiments of the present invention and the tabletting of the platform of the contact forces of protection bearing
Structural representation；
Fig. 8 is measurement magnetic suspension shafting according to embodiments of the present invention and the tabletting of the platform of the contact forces of protection bearing
Structural representation；
Fig. 9 is measurement magnetic suspension shafting according to embodiments of the present invention and the screw thread of the platform of the contact forces of protection bearing
The structural representation of set；
Figure 10 is measurement magnetic suspension shafting according to embodiments of the present invention and the spiral shell of the platform of the contact forces of protection bearing
The structural representation of line set；
Figure 11 is measurement magnetic suspension shafting according to embodiments of the present invention and the end of the platform of the contact forces of protection bearing
The structural representation of lid；
Figure 12 is measurement magnetic suspension shafting according to embodiments of the present invention and the end of the platform of the contact forces of protection bearing
The structural representation of lid.
Reference：
Magnetic suspension shafting and the platform 100 of the contact forces of protection bearing are measured,
Frame 1, piezoelectric transducer 2, bearing supports 3, protection bearing 4, tabletting 5, the second straight pin 6, pre-loading screw 7,
Pre-load nut 8, thread bush 9, pad 10, the first straight pin 11, screw 12, end cap 13, holding screw 14, locknut 15, peace
It behave affectedly 101, mounting hole 102, mating hole 103.
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 measurement magnetic suspension shafting according to embodiments of the present invention and the contact forces of protection bearing are described
Platform 100, the measurement magnetic suspension shafting and protect the platform 100 of contact forces of bearing that there is higher excellent of measurement accuracy
Point.
As shown in Fig. 1-Figure 12, measurement magnetic suspension shafting according to embodiments of the present invention and the contact forces of protection bearing
Platform 100, including frame 1, multiple pre-tightening apparatus, bearing supports 3, multiple tablettings 5 and multiple piezoelectric transducers 2.
Specifically, multiple pre-tightening apparatus are located in frame 1.Bearing supports 3 are located in frame 1, and protection bearing 4 is installed
Inside bearing supports 3, such bearing supports 3 can support protection bearing 4.Multiple pre-tightening apparatus are respectively along protection bearing
Multiple tablettings 5 are pressed to bearing supports 3 by 4 radial direction, to adjust the position of bearing supports 3, so as to adjust protection bearing 4
Position, it is ensured that the centering between protection bearing 4 and magnetic suspension bearing stator.Piezoelectric transducer 2 is used to measure bearing supports 3
With the contact force between each tabletting 5, each piezoelectric transducer 2 is clamped between bearing supports 3 and tabletting 5, i.e. piezoelectricity
Sensor 2 radially realizes spacing and pretension protection bearing 4 by tabletting 5 and bearing supports 3.Preferably, bearing branch
Support member 3 is provided with the first straight pin 11, so as to piezoelectricity on the axial direction (that is, the left and right directions shown in figure) of protection bearing 4
Sensor 2 carries out spacing.
Thus, measurement magnetic suspension shafting according to embodiments of the present invention and the platform 100 of the contact forces of protection bearing, lead to
The design of bearing supports 3 is crossed, measurement result can be made to be closer to actual value, i.e. bearing supports 3 are by magnetic suspension shafting
Radial direction of the contact force along protection bearing 4 between protection bearing 4 is delivered on multiple piezoelectric transducers 2, then, by will be many
Measured contact force carries out vector summation to individual piezoelectric transducer 2 in all directions, just can try to achieve magnetic suspension shaft and tie up to and fall
During with protect bearing 4 contact forces amplitude, direction and vibration frequency so that contribute to evaluate protection bearing 4 can
By property and the anti-dropping capability of research protection bearing 4.Here, " all directions " include above-below direction and the front and back shown in figure
To.
Also, because protection bearing 4 is supported on bearing supports 3, piezoelectric transducer 2 is located on bearing supports 3, is protected
Shield bearing 4 and magnetic suspension bearing stator can realize in shell with it is independently installed outside shell, i.e. the installation of magnetic suspension bearing stator is outside
In shell, support of the shell to protection bearing 4 is substituted using bearing supports 3, protection bearing 4 may be mounted at outside shell, so,
The measurement for the contact force being subject to protection bearing 4 can be carried out outside shell, so as to reduce the support of magnetic suspension bearing stator
Shaft and the interference of the measurement of the contact forces of protection bearing 4 are acted on, and then improves magnetic suspension shaft and is tied up in falling process
The measurement accuracy of contact force and vibration frequency, can more intuitively reflect magnetic suspension shafting and protection bearing 4 between collision and
The severe degree of friction.
According to some embodiments of the present invention, as shown in Figure 1, Figure 2, shown in Fig. 5 and Fig. 6, bearing supports 3 construct it is rectangular,
And bearing supports 3 have the mating hole 103 with protecting the outer peripheral face of bearing 4 to be adapted to, multiple pre-tightening apparatus are respectively along front and back
Multiple tablettings 5 are pressed into bearing supports 3 to above-below direction.For example, four pre-tightening apparatus are respectively provided at bearing supports 3
Top, lower section, front and back, tabletting 5 are four, and tabletting 5 is simultaneously pressed to bearing branch by each pre-tightening apparatus one tabletting 5 of correspondence
Support member 3, so as to adjust position of the bearing supports 3 along the vertical direction with fore-and-aft direction.
In some embodiments of the invention, as Figure 1-Figure 4, frame 1 has installation cavity 101 and multiple mounting holes
102, the left surface and right flank of installation cavity 101 are opened wide, and each mounting hole 102 is connected with installation cavity 101, bearing supports 3
It is located in installation cavity 101, and pre-tightening apparatus is at least partially disposed in mounting hole 102, thus it is easy for installation, and it is easy to pretension to grasp
Make.Wherein, " pre-tightening apparatus is at least partially disposed in mounting hole 102 " be only partially located within including pre-tightening apparatus in mounting hole 102 and
Pre-tightening apparatus is entirely located in two kinds of situations in mounting hole 102.
Further, as depicted in figs. 1 and 2, each pre-tightening apparatus includes thread bush 9, pre-loading screw 7 and pre-load nut 8.
Thread bush 9 is located in mounting hole 102.Pre-loading screw 7 is along the longitudinal direction with a direction in above-below direction by the pressed towards axle of tabletting 5
Support member 3 is held, for example, tabletting 5 is downwardly against on bearing supports 3 by the pre-loading screw 7 positioned at the top of bearing supports 3, position
Tabletting 5 is pressed up on bearing supports 3 by the pre-loading screw 7 in the lower section of bearing supports 3, positioned at the front of bearing supports 3
Pre-loading screw 7 tabletting 5 is pressed on bearing supports 3 backward, the pre-loading screw 7 positioned at the rear of bearing supports 3 is by tabletting 5
It is pressed in forward on bearing supports 3, so as to adjust position of the bearing supports 3 on aforementioned four direction.Pre-loading screw 7
It is threadedly coupled with thread bush 9, and pre-loading screw 7 is arranged in frame 1 by pre-load nut 8.
Alternatively, as shown in Figure 7 and Figure 8, tabletting 5 is located in mounting hole 102, and tabletting 5 is configured to discount vibram outlet shape, in this way,
It is easy to the fixed and positioned of tabletting 5, beneficial to the measurement accuracy for improving piezoelectric transducer 2.
Advantageously, as shown in Fig. 2 frame 1 is provided with for preventing the holding screw that circumferentially rotates of the tabletting 5 along tabletting 5
14, holding screw 14 is only against on the perisporium for being formed as plane of tabletting 5, i.e. holding screw 14 stops the discount vibram outlet for being against tabletting 5
Place, so that tabletting 5 is clamped securely in mounting hole 102.Here, holding screw 14 can be connected to machine by locknut 15
On frame 1.
In a preferred embodiment of the invention, as shown in Fig. 1, Fig. 5 and Fig. 6, bearing supports 3 are configured to square, fit
Distribution 103 is located at the center of bearing supports 3, so as to assemble more convenient, and easily facilitates the position that adjustment ensures bearing,
It is more favorable for ensureing the centering of protection bearing 4.
The measurement magnetic suspension shafting according to the specific embodiment of the present invention and protection are described referring to Fig. 1-Figure 12
The platform 100 of the contact forces of bearing.
As shown in Fig. 1-Figure 12, thread bush 9 is connected in the mounting hole 102 in frame 1 by the second straight pin 6.Tabletting 5
For adjust bearing supports 3 in the horizontal direction with the position on vertical direction, determined with adjusting protection bearing 4 and magnetic suspension bearing
Centering between son, the position of tabletting 5 can carry out threaded adjusting by corresponding pre-loading screw 7, i.e. turn pre-loading screw
7 can adjust the position of tabletting 5, and pre-loading screw 7 is connected through a screw thread is changed into tabletting 5 vertically by circumferentially rotating for itself
Rectilinear movement.Four piezoelectric transducers 2 are respectively used for measuring between bearing supports 3 and tabletting 5 in the horizontal direction (i.e. in figure
The fore-and-aft direction shown) and vertical direction (above-below direction shown in figure) on contact force, each piezoelectric transducer 2 protect
Shield bearing 4 radially carries out spacing and pretension by tabletting 5 and bearing supports 3, protection bearing 4 axle upwardly through the
One straight pin 11 and tabletting 5 carry out spacing.
Protection bearing 4 is to be in protection axle using two angular contact ball bearings installed face-to-face, i.e. load action center
Hold within 4 center line, simple in construction, convenient disassembly.Protect the outer ring of bearing 4 and the gap of mating hole 103 of bearing supports 3
Coordinate, protection bearing 4 is spacing upwardly through end cap 13 and bearing supports 3 in the axle of protection bearing 4, and end cap 13 and bearing
Support member 3 provides axial pre tightening force for protection bearing 4, and specifically, end cap 13 and bearing supports 3 are threadedly coupled by screw 12
And pretension, the axial pre tightening force of two angular contact ball bearings can be adjusted using screw 12.Between end cap 13 and bearing supports 3
Pad 10 provided with quality of rubber materials.
Measurement magnetic suspension shafting according to embodiments of the present invention and the contact forces of protection bearing are described with reference to the accompanying drawings
Platform 100 operation principle.
Four pre-loading screws 7 arranged along the longitudinal direction with above-below direction are the piezoelectric sensing arranged on this four direction
Device 2 provides enough pretightning forces so that piezoelectric transducer 2 can measure the contact force in all directions, also, bearing supports
Contact force between 3 and four tablettings 5 can carry out vector by the contact force for measuring the piezoelectric transducer 2 on four direction
Sum and try to achieve, so, the contact force of measurement result relatively between shafting and protection bearing 4 can intuitively reflect axle
The severe degree of collision and friction between system and protection bearing 4, helps to evaluate the reliability of protection bearing 4 and research protection axle
Hold 4 anti-dropping capability.
In addition, by using the design of bearing supports 3, protection bearing 4 can realize independence with magnetic suspension bearing stator
Install, reduce the interference of the supporting role of magnetic suspension bearing stator to the measurement of the contact force suffered by protection bearing 4, can
Contact force and the measurement accuracy of vibration frequency that raising magnetic suspension shaft is tied up in falling process.
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 measure magnetic suspension shafting and the platform of the contact forces of protection bearing, it is characterised in that including：
Frame；
Multiple pre-tightening apparatus, the pre-tightening apparatus is located in the frame；
Bearing supports for supporting the protection bearing, the bearing supports are located in the frame；
Multiple tablettings are pressed to the axle by multiple tablettings, multiple pre-tightening apparatus along the radial direction of the protection bearing respectively
Hold support member；
Multiple piezoelectric transducers for measuring the bearing supports and the contact forces of each tabletting, each pressure
Electric transducer is clamped between the bearing supports and the tabletting.
2. measurement magnetic suspension shafting according to claim 1 and the platform of the contact forces of protection bearing, it is characterised in that
The bearing supports construct mating hole that is rectangular and being adapted to the outer peripheral face with the protection bearing, multiple pretensions
Multiple tablettings are pressed to the bearing supports by device with above-below direction along the longitudinal direction respectively.
3. measurement magnetic suspension shafting according to claim 2 and the platform of the contact forces of protection bearing, it is characterised in that
The frame has the unlimited installation cavity in the left and right sides and the multiple mounting holes connected with the installation cavity, the bearing supports
It is located in the installation cavity and the pre-tightening apparatus is at least partially disposed in the mounting hole.
4. measurement magnetic suspension shafting according to claim 3 and the platform of the contact forces of protection bearing, it is characterised in that
Each pre-tightening apparatus includes：
Thread bush, the screw thread is set in the mounting hole；
Pre-loading screw and pre-load nut, the pre-loading screw is along the longitudinal direction with a direction in above-below direction by the tabletting
The bearing supports are pressed to, the pre-loading screw is threadedly coupled with the thread bush and is arranged on institute by the pre-load nut
State in frame.
5. measurement magnetic suspension shafting according to claim 3 and the platform of the contact forces of protection bearing, it is characterised in that
The tabletting is located in the mounting hole and is configured to discount vibram outlet shape.
6. measurement magnetic suspension shafting according to claim 5 and the platform of the contact forces of protection bearing, it is characterised in that
The frame, which is provided with, to be used to prevent the holding screw that circumferentially rotates of the tabletting along the tabletting, the holding screw stop to
On the perisporium for being formed as plane of the tabletting.
7. measurement magnetic suspension shafting according to claim 2 and the platform of the contact forces of protection bearing, it is characterised in that
The bearing supports are configured to square, and the mating hole is located at the center of the bearing supports.
8. measurement magnetic suspension shafting according to claim 1 and the platform of the contact forces of protection bearing, it is characterised in that
Also include：
For carrying out the first spacing straight pin to the piezoelectric transducer in the lateral direction, first straight pin is located at institute
State on bearing supports.
9. measurement magnetic suspension shafting according to claim 1 and the platform of the contact forces of protection bearing, it is characterised in that
Also include：
End cap for carrying out axial limiting to the protection bearing, the end cap is located on the bearing supports.
10. measurement magnetic suspension shafting according to claim 9 and the platform of the contact forces of protection bearing, its feature exist
In together with the end cap is connected by screw with the bearing supports, being set between the end cap and the bearing supports
There is pad.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710225044.8A CN107179148B (en) | 2017-04-07 | 2017-04-07 | Platform for measuring contact force between magnetic suspension shafting and protection bearing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710225044.8A CN107179148B (en) | 2017-04-07 | 2017-04-07 | Platform for measuring contact force between magnetic suspension shafting and protection bearing |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107179148A true CN107179148A (en) | 2017-09-19 |
| CN107179148B CN107179148B (en) | 2023-12-29 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710225044.8A Active CN107179148B (en) | 2017-04-07 | 2017-04-07 | Platform for measuring contact force between magnetic suspension shafting and protection bearing |
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| Country | Link |
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| CN (1) | CN107179148B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN112372261A (en) * | 2020-11-03 | 2021-02-19 | 重庆江增船舶重工有限公司 | Method for adjusting assembly clearance of magnetic suspension bearing, auxiliary bearing and rotor |
| CN114295257A (en) * | 2021-12-29 | 2022-04-08 | 河海大学 | Force sensor based on anti-magnetic suspension principle and measuring method thereof |
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| CN206648760U (en) * | 2017-04-07 | 2017-11-17 | 清华大学 | Measure the platform of contact forces of the magnetic suspension shafting with protecting bearing |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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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 |
| CN109655265B (en) * | 2018-12-29 | 2020-08-07 | 国创(洛阳)轴承产业技术研究院有限公司 | Magnetic suspension shafting protective bearing performance testing machine |
| CN112372261A (en) * | 2020-11-03 | 2021-02-19 | 重庆江增船舶重工有限公司 | Method for adjusting assembly clearance of magnetic suspension bearing, auxiliary bearing and rotor |
| CN112372261B (en) * | 2020-11-03 | 2022-05-17 | 重庆江增船舶重工有限公司 | Method for adjusting assembly clearance between magnetic suspension bearing, auxiliary bearing and rotor |
| CN114295257A (en) * | 2021-12-29 | 2022-04-08 | 河海大学 | Force sensor based on anti-magnetic suspension principle and measuring method thereof |
| CN114295257B (en) * | 2021-12-29 | 2022-09-06 | 河海大学 | Force sensor based on anti-magnetic suspension principle and measuring method thereof |
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