CN106482950B - A kind of angular contact bearing birotor testing machine shafting structure - Google Patents
A kind of angular contact bearing birotor testing machine shafting structure Download PDFInfo
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- CN106482950B CN106482950B CN201611218898.5A CN201611218898A CN106482950B CN 106482950 B CN106482950 B CN 106482950B CN 201611218898 A CN201611218898 A CN 201611218898A CN 106482950 B CN106482950 B CN 106482950B
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- 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
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- Testing Of Devices, Machine Parts, Or Other Structures Thereof (AREA)
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Abstract
A kind of angular contact bearing birotor testing machine shafting structure, it is arranged on bearing tester, including inner ring armature spindle and outer ring armature spindle, the inner ring fixation of test bearing is set on the test end of inner ring armature spindle, outer ring is fixedly connected with the test end of outer ring armature spindle, each fixing sleeve of floating end of the inner ring armature spindle and outer ring armature spindle is equipped with an axially loaded bearing, the outer ring of axially loaded bearing is fixedly connected with floating bearing bracket, floating bearing bracket is for bearing axial load and passing sequentially through axially loaded bearing, inner ring armature spindle or outer ring rotor axial test bearing apply axial load.The present invention provides a kind of loading method multiplicity, can be suitable for the birotor testing machine shafting structure of Multiple Type angular contact bearing performance test.
Description
Technical field
The present invention relates to bearing tester technical field, specifically a kind of angular contact bearing birotor testing machine shafting
Structure.
Background technique
Bearing is the key foundation components in all kinds of equipment manufacturings, and the superiority and inferiority of quality directly decides the property of equipment
Energy, reliability and service life；Since the working environment of bearing is severe, the load working condition of receiving is complicated, to have long enough even to fill
It is non-maintaining etc. for life cycle management, bearing must be done on testing machine during designing, developing and manufacturing
The verifying of corresponding simulation operating condition, provides reliable test data for research, design, manufacture and use, is design, the manufacture of bearing
With offer foundation is provided.High temperature, the research and development of high speed and precision bearing, design, manufacture and its experimental technique are mainly few by foreign countries
The several trans-corporations of number are monopolized, and the research and development of the such testing machine in China start from for the 7, eighties, due to being designed, and manufactured at that time, made
Limited with equal, the inside and outside diameter of test bearing also only in limit, small size, limit speed is relatively low, be not able to satisfy it is now big directly
The test requirements document of diameter, high temperature, high revolving speed bearing.
Most of existing bearing tester is using single-turn axle construction, the inner ring or outer ring phase of shaft and subject bearing
Connection, realizes the rotation and the simulation test of loading form of bearing in which can be convenient on testing machine, but this bearing test
There is many deficiencies for machine.Because can only be fixed with inner ring or outer ring, when test bearing need inner ring and outer ring and meanwhile rotation
When, testing machine just cannot be applicable in.Although there are also the birotor examinations that can make bearing internal external circle while rotation is tested
Machine is tested, but the bearing of minor diameter, low speed can only generally be tested, it can not be to major diameter, high revolving speed, high oily working environment
Bearing tested.
In bearing test, test speed is very important a parameter, and testing machine in the prior art is limited to axis
It is that designing and manufacturing level and loading device structure type, test speed can only achieve 15000rpm or so, large-scale, work can not be tested
In work Internal and external cycle simultaneously rotate, high temperature, the bearing to run at high speed.
Summary of the invention
In order to solve deficiency in the prior art, the present invention provides a kind of loading method multiplicity, can be suitable for a variety of types
The birotor testing machine shafting structure of bugle contact bearing performance test.
To achieve the goals above, the present invention use the specific scheme is that
A kind of angular contact bearing birotor testing machine shafting structure is arranged on bearing tester, including inner ring armature spindle
Inner ring fixation with outer ring armature spindle, test bearing is set on the test end of inner ring armature spindle, outer ring and outer ring armature spindle
Test end is fixedly connected, and each fixing sleeve of floating end of the inner ring armature spindle and outer ring armature spindle is equipped with an axially loaded axis
It holds, the outer ring of axially loaded bearing is fixedly connected with floating bearing bracket, and floating bearing bracket is for bearing axial load and successively leading to
It crosses axially loaded bearing, inner ring armature spindle or outer ring rotor axial test bearing and applies axial load.
The test end fixing sleeve of the inner ring armature spindle is equipped with lubricating sleeve under ring, and the test bearing, which is set under ring, to be lubricated
It puts on, inner ring covers axial limiting by third ladder, screw that outer ring is along the circumferential direction uniformly arranged by several and outer
The test end of circle armature spindle is fixedly connected.
The outer wall of lubricating sleeve is provided with set shoulder under the ring, and the inner ring of test bearing is axial by set shoulder and third ladder set
Limit is fixed, and third ladder set is located at test bearing close to the side of outer ring armature spindle；The inner wall of lubricating sleeve is under the ring
Ladder nested structure, lubricating sleeve offers the oiling being connected to ladder nested structure on the end wall of outer ring armature spindle under ring
Hole is also provided with the balance hole of one and oil filler point about lubricating sleeve axisymmetrical under ring, size and the oil filler point phase of balance hole
Deng but be not connected to ladder nested structure.
The inner ring armature spindle is hollow shaft, fixing sleeve is gone back on inner ring armature spindle equipped with radial loaded bearing, radial direction adds
Load bearing is cylinder roller bearing, and inner ring covers axial limiting by the shaft shoulder and the second ladder, and the second ladder is set on diameter
Side to load bearings far from test bearing, radial loaded bearing outer ring is fixedly connected with radial loaded bearing block, radial to add
Bearing block is carried to bear radial load and pass sequentially through radial loaded bearing and inner ring rotor axial test bearing application radial load；
Radial loaded bearing oil distribution casing, radial loaded bearing oil distribution casing and radial loaded axis are additionally provided in the side of radial loaded bearing
Seat is held to be fixedly connected.
The outer ring armature spindle is hollow shaft, and test end is cylindrical and internal diameter is greater than the outer diameter of axle body, tests end and axis
The junction of the tapered tubular of changeover portion between body, changeover portion and axle body is shaft shoulder structure, is arranged at the shaft shoulder and accompanies examination
Bearing accompanies the other side of examination bearing inner race to cover axial limiting by fourth order ladder, accompanies the outer ring of examination bearing to be fixed on and accompanies examination bearing
On seat, examination bearing oil distribution casing is accompanied accompanying examination bearing to be additionally provided with close to the side of outer ring armature spindle floating end, accompanies examination bearing with oil
The screw that disk is distributed uniformly and circumferentially by several is fixedly connected with examination bearing block is accompanied.
The axially loaded bearing is angular contact bearing, and inner ring covers axial limiting by the shaft shoulder and the first ladder, outside
Circle is fixedly connected with floating bearing bracket, in axially loaded bearing close to the side of test bearing, is provided with for oil and gas pipeline support,
It is provided with axially loaded bearing oil distribution casing on for oil and gas pipeline support, the oil gas vent of axially loaded bearing oil distribution casing is towards axis
It is arranged to the retainer of load bearings, the lubrication oil gas of axially loaded bearing is passed through from the entrance entrance for oil and gas pipeline support
It crosses and is sent into axially loaded bearing oil distribution casing for the oil duct inside oil and gas pipeline support and sprays to axially loaded bearing from nozzle.
The floating bearing bracket is filled out far from the side of test bearing equipped with bearing ring, and the axial loading device, which acts on, to be held
On pressure ring, the load that force snesor applies for measuring axially loaded mechanism is additionally provided in the other side of bearing ring.
It is described for being additionally provided with several guide pins on oil and gas pipeline support, guide pin runs through for oil and gas pipeline support and one
End is fixed in floating bearing bracket, is completed floating bearing bracket and is installed with the guiding for oil and gas pipeline support, and guide pin and fuel feeding
Clearance fit between air pipe support；It is axially loaded being also fixedly connected with for oil and gas pipeline support close to the side of test bearing
Device pressure ring.
The utility model has the advantages that
1, the present invention in such a way that bilateral is axially loaded, load adjustable range is big, can unidirectionally be loaded with flexible choice or
The mode of person's biaxial loadings meets the requirement of different tests, additionally it is possible to improve the reliability of device；
2, using dual-rotor structure, Internal and external cycle can be carried out to test bearing, and unidirectionally rotation test, unidirectional friction speed turn at the same speed
Dynamic test, two-way synchronized rotation test or bidirectional different speed rotation test, test method is flexible, applied widely；
3, axial load is transmitted by armature spindle, avoids the complexity for reducing device using individual transmission mechanism, also
It can be avoided transmission mechanism directly to contact with test bearing and have an impact test bearing；
4, load is transmitted by cushion in radial loaded link, the friction and inner ring that can reduce in loading procedure turn
The vibration of sub- axis；
5, each mode for accompanying examination bearing to be all made of oil-air lubrication, high lubricating effect, under the circumference of the high-speed rotation still
It can satisfy the demand of lubrication, and the lubricants capacity used is very small；
6, test bearing is arranged on inner ring armature spindle by the transition sleeve of lubricating sleeve under ring and ladder set composition, for not
With the bearing of internal diameter, it is only necessary to which replacing corresponding transition sleeve can be tested, no replacement is required armature spindle, considerably reduce examination
Test cost.
Detailed description of the invention
Fig. 1 is overall structure diagram；
Fig. 2 is axially loaded bearing and axially loaded bearing block partial enlargement diagram；
Fig. 3 be test bearing, radial loaded bearing and accompany examination bearing partial enlargement diagram.
Appended drawing reference: 1, inner ring armature spindle, the 2, first ladder set, 3, spacer, 4, floating bearing bracket, 5, axially loaded bearing
Oil distribution casing, 6, linear bearing, 7, for oil and gas pipeline support, 8, axial loading device pressure ring, 9, guide pin, the 10, second ladder set,
11, radial loaded bearing oil distribution casing, 12, radial loaded bearing block, 13, lubricating sleeve under ring, 14, third ladder set, 15, lubricating oil
Air flue, 16, outer ring armature spindle, 17, accompany examination the first pressure ring of bearing, 18, accompany examination bearing block, 19, accompany examination the second pressure ring of bearing, 20,
Sensor stand, 21, cushion, 22, accompany examination bearing oil distribution casing, 23, fourth order ladder set, 24, radial loaded bearing, 25, test
Bearing, 26, accompany examination bearing, 27, vibrating sensor, 28, temperature sensor, 29, axially loaded bearing, 30, bearing ring, 31, return
Receive oil duct.
Specific embodiment
Embodiments of the present invention are illustrated below according to attached drawing.
As shown in Figure 1 to Figure 3, a kind of angular contact bearing birotor testing machine shafting structure is arranged on bearing tester,
Including inner ring armature spindle 1 and outer ring armature spindle 16, the fixed test end for being set in inner ring armature spindle 1 of the inner ring of test bearing 25
On, outer ring is fixedly connected with the test end of outer ring armature spindle 16, inner ring armature spindle 1 and outer ring armature spindle 16 not with test bearing 25
Connected one end is floating end.Each fixing sleeve of floating end of the inner ring armature spindle 1 and outer ring armature spindle 16 is equipped with an axial direction
Load bearings 29, the outer ring of axially loaded bearing 29 are fixedly connected with floating bearing bracket 4, and floating bearing bracket 4 is used to support rotor
Axial load during axis and receiving bearing test, floating bearing bracket 4 pass sequentially through axially loaded bearing 29, inner ring armature spindle
1 and outer ring armature spindle 16 to test bearing 25 transmit axial load.Axially loaded using bilateral bi-directional, load adjustable range is big,
Can unidirectionally be loaded by flexible choice or biaxial loadings in a manner of, adapt to a variety of test bearings test load require.
The test end fixing sleeve of the inner ring armature spindle 1 is equipped with lubricating sleeve 13 under ring, and the test bearing 25 is set in ring
On lower lubricating sleeve 13, inner ring covers 14 axial limitings by third ladder, and outer ring is along the circumferential direction uniformly arranged by several
Screw be fixedly connected with outer ring armature spindle 16.Preferably, the outer wall of lubricating sleeve 13 is provided with set shoulder under the ring, axis is tested
The inner ring for holding 25 is fixed by set shoulder and third ladder 14 axial limitings of set, and third ladder set 14 is close positioned at test bearing 25
The side of outer ring armature spindle 16；The inner wall of lubricating sleeve 13 is ladder nested structure under the ring, and lubricating sleeve 13 is close to outer ring under ring
The oil filler point being connected to ladder nested structure is offered on the end wall of armature spindle 16, is also provided with one and oil filler point about ring
The balance hole of lower 13 axisymmetrical of lubricating sleeve, the size of balance hole is equal with oil filler point but is not connected to ladder nested structure.Under ring
The inside of lubricating sleeve 13 offers multiple mutually independent lubricating oil air flues 15, and the lubricating sleeve 13 under ring of lubricating oil air flue 15
It is uniformly distributed on circumferencial direction, so that the lubrication oil gas into test bearing 25 is evenly distributed, improve lubricant effect.Meanwhile support
Lubricating sleeve 13 under the ring that a variety of outer diameters do not wait, when replacing test bearing 25, it is only necessary to which response outer diameter is chosen according to its internal diameter
Ring under lubricating sleeve 13, shaft that no replacement is required, therefore experimentation cost can be saved.
The inner ring armature spindle 1 is hollow shaft, and fixing sleeve is gone back on inner ring armature spindle 1 equipped with radial loaded bearing 24, diameter
It is cylinder roller bearing to load bearings 24, inner ring covers 10 axial limitings, and the second ladder set by the shaft shoulder and the second ladder
10 are arranged in side of the radial loaded bearing 24 far from test bearing 25, and 24 outer ring of radial loaded bearing is fixedly connected with radial add
Bearing block 12 is carried, radial loaded bearing block 12 bears radial load and passes sequentially through radial loaded bearing 24 and inner ring armature spindle 1
Apply radial load to test bearing 25；It is additionally provided with radial loaded bearing oil distribution casing 11 in the side of radial loaded bearing 24,
Radial loaded bearing oil distribution casing 11 is fixedly connected with radial loaded bearing block 12, and connection type is along the circumferential direction to be set using 10
The screw set is attached.Radial loaded bearing oil distribution casing 11 provides oil-air lubrication for bearing, at it far from test bearing 25
One end offers multiple oil inlet stomatas, and each oil inlet stomata is connected to an oil gas road being arranged in inside oil distribution casing, in oil gas road
End connects a nozzle towards 24 outer ring raceway of radial loaded bearing.As a preferred embodiment, the quantity in oil gas road is 4
It is a, almost cover requirement of all operating condition of test to examination bearing lubrication is accompanied.
The outer ring armature spindle 16 is hollow shaft, and end is cylindrical and internal diameter is greater than the outer diameter of axle body for test, test end and
The junction of the tapered tubular of changeover portion between axle body, changeover portion and axle body is shaft shoulder structure, is arranged with and accompanies at the shaft shoulder
Bearing 26 is tried, the other side of examination 26 inner ring of bearing is accompanied to cover 23 axial limitings by fourth order ladder, the outer ring of examination bearing 26 is accompanied to fix
On accompanying examination bearing block 18, accompany examination bearing with oil accompanying examination bearing 26 to be additionally provided with close to the side of 16 floating end of outer ring armature spindle
Disk 22, the screw for accompanying examination bearing oil distribution casing 22 to be distributed uniformly and circumferentially by several fix company with examination bearing block 18 is accompanied
It connects.
In order to recycling used lubricating oil in time, prevent from entering inner ring armature spindle 1 and outer ring armature spindle 16
Hollow axle center damages high-speed rotating shafting, selects the perforation at the test end of outer ring armature spindle 16 that a plurality of oil recovery is arranged
Road 31, alloing the lubricating oil entered between 16 changeover portion of test bearing 25 and outer ring armature spindle, edge is returned under the action of the centrifugal force
Oil duct 31 is received to be discharged.Recycling oil duct 31 is that 6 setting directions are parallel to changeover portion side wall and equally distributed in a circumferential direction
3 millimeter opening of diameter.
The axially loaded bearing 29 is angular contact bearing, and inner ring covers 2 axial limitings by the shaft shoulder and the first ladder,
Outer ring is fixedly connected with floating bearing bracket 4, in axially loaded bearing 29 close to the side of test bearing 25, is provided with for Oil/Gas Pipe
Road support 7 is provided with axially loaded bearing oil distribution casing 5, the oil of axially loaded bearing oil distribution casing 5 on for oil and gas pipeline support 7
Gas jets end is arranged towards axially loaded bearing 29, and the lubrication oil gas of axially loaded bearing 29 is from for oil and gas pipeline support 7
Right side enters, by being sent into axially loaded bearing oil distribution casing 5 for the oil gas road inside oil and gas pipeline support 7 and spraying to from nozzle
Axially loaded bearing 29.The floating bearing bracket 4 is equipped with bearing ring 30, the axially loaded dress far from the side of test bearing 25
It sets and acts on bearing ring 30, be additionally provided with force snesor in the other side of bearing ring 30 and apply for measuring axially loaded mechanism
Load.It is described for being additionally provided with several guide pins 9 on oil and gas pipeline support 7, guide pin 9 runs through for oil and gas pipeline support 7
And one end is fixed in floating bearing bracket 4, is completed floating bearing bracket 4 and is installed with the guiding for oil and gas pipeline support 7, and is oriented to
For pin 9 with for 7 clearance fit of oil and gas pipeline support, the fixed form between floating bearing bracket 4 is to be screwed.For Oil/Gas Pipe
Road support 7 is also fixedly connected with axial loading device pressure ring 8 close to the side of test bearing 25.
The outside of floating bearing bracket 4 is arranged in the loading mechanism for providing axial load, and loading method can choose spring and add
Carry, hydraulic loaded or mix-loaded can choose spring loads for the test of the slow-speed of revolution, can be with for high-revolving test
Select the mode of springs preload and hydraulic follow-up load.It, will not be because of load in order to make load be evenly distributed in a circumferential direction
Lotus unevenly causes shafting vibration to increase, and stress surface of the various loading devices along bearing ring 30 is uniformly distributed.In order to reality
When monitoring test operating status, on axial loading device pressure ring 8 be arranged sensor stand 20, sensor stand 20 with for oil gas
Pipeline support 7 is fixedly connected by screw.Vibrating sensor 27 is set on sensor stand 20.In addition to this, also in axial direction
Temperature sensor 28 is arranged in the junction of load bearings 29 and floating bearing bracket 5, passes through the two sensor real-time monitoring inner rings
The working condition of armature spindle 1 floating end and axially loaded bearing 29, guarantee test are steadily gone on smoothly.Using the feelings of biaxial loadings
Under condition, the inner ring and outer ring of test bearing 25 passes through inner ring armature spindle 1 respectively and outer ring armature spindle 16 bears axial load；Using
In the case where unidirectional load, only loading mechanism output loads of side because the other side be it is fixed, according to the phase of power
To effect, actually also can inner ring and outer ring to test bearing 25 apply load simultaneously.In the case where using biaxial loadings, such as
Fruit encounters the case where side loading mechanism failure, and the loading mechanism of the other side still can keep operating, can be to avoid test axis
Hold 25 and axially loaded bearing 29 lose suddenly axial load damage.
First ladder covers equal edge on the side wall of the 2, second ladder set 10, third ladder set 14 and fourth order ladder set 23
Radial direction offers the oil filler point being connected to hierarchic structure, by being disassembled and installed from oil filler point to hierarchic structure oiling.
Claims (5)
1. a kind of angular contact bearing birotor testing machine shafting structure is arranged on bearing tester, including inner ring armature spindle (1)
Inner ring fixation with outer ring armature spindle (16), test bearing (25) is set on the test end of inner ring armature spindle (1), outer ring and outer
The test end of circle armature spindle (16) is fixedly connected, it is characterised in that:
Each fixing sleeve of floating end of the inner ring armature spindle (1) and outer ring armature spindle (16) is equipped with an axially loaded bearing
(29), the outer ring of axially loaded bearing (29) is fixedly connected with floating bearing bracket (4), and floating bearing bracket (4) is for bearing axial direction
Load simultaneously passes sequentially through axially loaded bearing (29), inner ring armature spindle (1) or outer ring armature spindle (16) to test bearing (25)
Apply axial load；
The test end fixing sleeve of the inner ring armature spindle (1) is equipped with lubricating sleeve (13) under ring, and the test bearing (25) is set in
Under ring on lubricating sleeve (13), for inner ring by third ladder set (14) axial limiting, outer ring is along the circumferential direction equal by several
The screw of even setting is fixedly connected with the test end of outer ring armature spindle (16)；The outer wall of lubricating sleeve (13) is provided with set under the ring
The inner ring of shoulder, test bearing (25) is fixed by set shoulder and third ladder set (14) axial limiting, and third ladder set (14) position
In test bearing (25) close to the side of outer ring armature spindle (16)；The inner wall of lubricating sleeve (13) is ladder nested structure under the ring,
Lubricating sleeve (13) offers the oil filler point being connected to ladder nested structure on the end wall of outer ring armature spindle (16) under ring,
It is also provided with the balance hole of one and oil filler point about lubricating sleeve under ring (13) axisymmetrical, size and the oil filler point phase of balance hole
Deng but be not connected to ladder nested structure；
The inner ring armature spindle (1) is hollow shaft, and fixing sleeve is gone back on inner ring armature spindle (1) and is equipped with radial loaded bearing (24),
Radial loaded bearing (24) is cylinder roller bearing, and inner ring passes through the shaft shoulder and second ladder set (10) axial limiting, and second
In the side of radial loaded bearing (24) far from test bearing (25), radial loaded bearing (24) outer ring is solid for ladder set (10) setting
Surely it is connected with radial loaded bearing block (12), radial loaded bearing block (12) bears radial load and passes sequentially through radial loaded axis
It holds (24) and inner ring armature spindle (1) and applies radial load to test bearing (25)；It is also set in the side of radial loaded bearing (24)
It is equipped with radial loaded bearing oil distribution casing (11), radial loaded bearing oil distribution casing (11) and radial loaded bearing block (12) fixed company
It connects.
2. a kind of angular contact bearing birotor testing machine shafting structure as described in claim 1, it is characterised in that: the outer ring
Armature spindle (16) is hollow shaft, and test end is cylindrical and internal diameter is greater than the outer diameter of axle body, tests the transition between end and axle body
The junction of the tapered tubular of section, changeover portion and axle body is shaft shoulder structure, is arranged at the shaft shoulder and accompanies examination bearing (26), accompanies examination
It accompanies the outer ring of examination bearing (26) to be fixed on by fourth order ladder set (23) axial limiting and accompanies examination axis in the other side of bearing (26) inner ring
It holds on seat (18), accompanies examination bearing oil distribution casing accompanying examination bearing (26) to be additionally provided with close to the side of outer ring armature spindle (16) floating end
(22), the screw for accompanying examination bearing oil distribution casing (22) to be distributed uniformly and circumferentially by several is fixed with examination bearing block (18) is accompanied
Connection.
3. a kind of angular contact bearing birotor testing machine shafting structure as described in claim 1, it is characterised in that: the axial direction
Load bearings (29) are angular contact bearing, and by the shaft shoulder and first ladder set (2) axial limiting, outer ring is fixedly connected inner ring
There are floating bearing bracket (4), in axially loaded bearing (29) close to the side of test bearing (25), is provided with for oil and gas pipeline support
(7), axially loaded bearing oil distribution casing (5) is provided on for oil and gas pipeline support (7), axially loaded bearing oil distribution casing (5)
The retainer of oil gas vent towards axially loaded bearing (29) is arranged, and the lubrication oil gas of axially loaded bearing (29) is from for oil gas
The entrance of pipeline support (7) enters, by being sent into axially loaded bearing oil distribution casing for the internal oil duct of oil and gas pipeline support (7)
(5) axially loaded bearing (29) are sprayed in and from nozzle.
4. a kind of angular contact bearing birotor testing machine shafting structure as claimed in claim 3, it is characterised in that: the floating
Bearing block (4) is filled out far from the side of test bearing (25) equipped with bearing ring (30), and axial loading device acts on bearing ring (30)
On, force snesor is additionally provided with for measuring the load of axial loading device application in the other side of bearing ring (30).
5. a kind of angular contact bearing birotor testing machine shafting structure as claimed in claim 3, it is characterised in that: the fuel feeding
Several guide pins (9) are additionally provided on air pipe support (7), guide pin (9) runs through for oil and gas pipeline support (7) and one end is consolidated
It is scheduled in floating bearing bracket (4), completes floating bearing bracket (4) and installed with the guiding for oil and gas pipeline support (7), and guide pin
(9) and for clearance fit between oil and gas pipeline support (7)；In the side for oil and gas pipeline support (7) close to test bearing (25)
Also it is fixedly connected with axial loading device pressure ring (8).
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| CN201611218898.5A CN106482950B (en) | 2016-12-26 | 2016-12-26 | A kind of angular contact bearing birotor testing machine shafting structure |
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| CN201611218898.5A CN106482950B (en) | 2016-12-26 | 2016-12-26 | A kind of angular contact bearing birotor testing machine shafting structure |
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| CN106482950B true CN106482950B (en) | 2019-11-19 |
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| CN110545019B (en) * | 2019-09-24 | 2021-04-16 | 上海电气集团上海电机厂有限公司 | Shafting alignment process method under three-support double-rotor high-rotating-speed |
| CN112629857B (en) * | 2020-12-28 | 2022-12-20 | 中国航发哈尔滨轴承有限公司 | Birotor bearing tester |
| CN114061951B (en) * | 2021-11-17 | 2023-09-12 | 中国航发哈尔滨轴承有限公司 | Loading reversing mechanism of medium-sized tester |
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| CN106482950A (en) | 2017-03-08 |
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