CN105345454B - The main shaft bearing assembling deviation correcting system of wind generator set main shaft - Google Patents
The main shaft bearing assembling deviation correcting system of wind generator set main shaft Download PDFInfo
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- CN105345454B CN105345454B CN201510867755.6A CN201510867755A CN105345454B CN 105345454 B CN105345454 B CN 105345454B CN 201510867755 A CN201510867755 A CN 201510867755A CN 105345454 B CN105345454 B CN 105345454B
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- main shaft
- shaft bearing
- generator set
- wind generator
- deviation correcting
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P19/00—Machines for simply fitting together or separating metal parts or objects, or metal and non-metal parts, whether or not involving some deformation; Tools or devices therefor so far as not provided for in other classes
- B23P19/10—Aligning parts to be fitted together
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Wind Motors (AREA)
- Manufacture Of Motors, Generators (AREA)
Abstract
The present invention discloses a kind of main shaft bearing assembling deviation correcting system of wind generator set main shaft, including：Container, it is used to contain liquid phase heat carrier；Thermal source, it is heated to the heat carrier；Nozzle, its along the main shaft circumferentially, its spout alignment sleeve loaded on the main shaft the main shaft bearing inner ring；Fluid path, it connects the container to the nozzle；Conveyer, it is used for the flowing for controlling the heat carrier from the container by the fluid path to the nozzle；Correcting mechanism is driven, the wheel hub connection flange direction that the power that its application acts on the main shaft bearing drives the main shaft bearing along the main shaft to the main shaft is moved.It can correct the main shaft bearing for the generation assembling deviation for being previously assembled to the main shaft in place on the premise of main shaft bearing and main shaft is not damaged.
Description
Technical field
The present invention relates to wind generator set main shaft part Biserial cylindrical roller bearing mounting technology, and in particular to Wind turbines master
The main shaft bearing assembling deviation correcting system of axle.
Background technology
Main drive chain is the critical piece that electric energy is converted wind energy into Double-feed wind power unit, and main shaft bearing is main
The critical component of driving-chain, so, the performance of main shaft bearing will directly affect power generation efficiency and maintenance cost.As whole
The last stage during machine-building, assembly work finally determine the quality of engineering goods, therefore, main shaft bearing
Assembling is the key point of Wind turbines assembling Quality Control all the time.
In the lump referring to Fig. 1,2, to ensure that main shaft bearing 2 can transmit enough torques, main shaft bearing 2 uses with main shaft 1
Interference fit.Main shaft bearing 2 assembles uses hot jacket method more, i.e., heats main shaft bearing 2 using principle of expanding with heat and contracting with cold, make its inner ring swollen
Greatly, accurate assembling is realized.The requirement of hot jacket method：（1）Cleaning main shaft bearing 2 and its piece surface being engaged, ensure free from admixture；
（2）Main shaft bearing 2 is heated to requiring temperature value with electromagnetic induction heater；（3）Main shaft bearing 2 is lifted by crane using frock and is adjusted rapidly
Whole level；（4）Hang main shaft bearing 2 rapidly using frock, be installed to relevant position on main shaft 1, it is desirable to main shaft bearing 2 and labyrinth
The end face gapless fitting of oil sealing 4.Because the temperature of main shaft bearing 2 declines quickly, and need to adjust horizontal, carrying out above-mentioned the
（3）、（4）The careless slightly main shaft bearing 2 that will result in is stuck on main shaft 1 during step assembling, or causes main shaft bearing 2 to install not
Level requirement can be met, be tilted on main shaft, main shaft bearing end face and the end face of labyrinth oil sealing 4 have gap, as shown in Figure 2.This
When the dimensional contraction of main shaft bearing 2, it is stuck on main shaft 1, position can neither be fitted down into, it can not be made to exit from filling again again
Match somebody with somebody.The measure that can uniquely take can only scrap to remove main shaft bearing 2, in some instances it may even be possible to the report of main shaft 1 is caused in demolishing process
It is useless.Wherein, in Fig. 1,2,3 be end cap, and 5 be wheel hub connection flange, and H is assembling deviation.
For this reason, it may be desirable to seek a kind of technical scheme, at least to mitigate above mentioned problem.
The content of the invention
The technical problem to be solved in the present invention is to provide one kind can be by elder generation on the premise of main shaft bearing and main shaft is not damaged
Before be assembled to the main shaft generation assembling deviation main shaft bearing correct wind generator set main shaft in place main shaft bearing assembling it is inclined
Poor correcting system.
In order to solve the above technical problems, the present invention uses following technical proposals.
A kind of main shaft bearing assembling deviation correcting system of wind generator set main shaft, including：
Container, it is used to contain liquid phase heat carrier；
Thermal source, it is heated to the heat carrier；
Nozzle, its along the main shaft circumferentially, its spout alignment sleeve loaded on the main shaft the main shaft bearing inner ring；
Fluid path, it connects the container to the nozzle；
Conveyer, it is used for the stream for controlling the heat carrier from the container by the fluid path to the nozzle
It is dynamic；And
Correcting mechanism is driven, it, which applies, acts on the power of the main shaft bearing and drive the main shaft bearing along the main shaft to the master
The wheel hub connection flange direction movement of axle.
The driving correcting mechanism includes：
At least three studs, its one end are individually fixed in the eyelet of the wheel hub connection flange, and its other end is from the wheel hub
Connection flange extends to direction where the main shaft bearing；
Support member, it is fixedly connected on the stud；
Multiple drive devices, its be fixedly connected on the support member and along the main shaft circumferentially, it is described for driving
Main shaft bearing moves along the main shaft to the wheel hub connection flange direction；And
Power source, it provides driving power for the drive device.
The nozzle is to be surrounded on the circumferential cyclic structure of the main shaft.
The drive device is hydraulic cylinder, and the power source is hydraulic power unit；Or the drive device is pneumatic cylinder, institute
It is pulsometer to state power source.
The multiple drive device is circumferentially uniform along the main shaft.
The spout is circumferentially uniform along the nozzle.
Also include being arranged at the piston rod end face of the hydraulic cylinder and the main shaft bearing and piston rod end face is opposite
End face between ring-type bearing disc；Or also including the piston rod end face for being arranged at the pneumatic cylinder and the main shaft bearing
Ring-type bearing disc between the opposite end face of the piston rod end face.
Also include being arranged in the container and be used to support supporting arrangement of the main shaft on the heat carrier liquid level.
Also include the protective cover that cover is placed on the container top opening.
The protective cover sets observation window, and the observation window is provided with the Transparent Parts made of high temperature resistant oil resisting material.
The present invention has following advantageous effects.
The present invention is heated by thermal source to heat carrier, and the heat carrier after conveyer control is heated passes through fluid path from container
To the flowing of nozzle, heat carrier sprays to the inner ring of main shaft bearing from the spout of nozzle, is expanded after the inner ring of the main shaft bearing is heated,
Driving correcting mechanism applies wheel hub connection flange side of the power drive shaft bearing for acting on main shaft bearing along main shaft to the main shaft
To movement, regulation installation site is finally displaced into, so as to reach the purpose for correcting previously deviation caused by assembling.It can be seen that this
Invention does not damage main shaft bearing and main shaft during correction, will can previously be assembled to the main shaft of the generation assembling deviation of the main shaft
Bearing is corrected in place, it is ensured that assembling quality.
Brief description of the drawings
Fig. 1 is view when main shaft bearing is assembled to.
Fig. 2 is that main shaft bearing fills the view do not matched somebody with somebody when in place（Assembling deviation H be present）.
Fig. 3 is the structural representation of the present invention.
Fig. 4 is that the heat carrier of the present invention stores the structural representation of heater.
Fig. 5 is the structural representation of the heat carrier EGR of the present invention.
Fig. 6 is a kind of structural representation of the driving correcting mechanism of the present invention.
Fig. 7 is structural representation of the present invention in the case where being covered with protective cover state.
Fig. 8 is another structural representation of the driving correcting mechanism of the present invention.
Driving guide frame in the embodiment that Fig. 9 is presented by Fig. 8.
Embodiment
For the technical characteristic of the present invention and effect can be described in detail, and can be realized according to the content of this specification, below
Embodiments of the present invention are further illustrated with reference to accompanying drawing.
Fig. 3 illustrates a kind of main shaft bearing assembling deviation of wind generator set main shaft in numerous embodiments of the invention
The embodiment of correcting system.The main shaft bearing assembling deviation correcting system of the wind generator set main shaft includes heat carrier storage heating dress
Put 10, heat carrier EGR 20 and driving correcting mechanism 30.
Include container 11 referring to Fig. 4, heat carrier storage heater 10 in the lump, container 11 is used to contain liquid phase heat carrier.
Container 11 can be the body structure that top has opening, and casing is not limited to any suitable shape.Container 11 can also be
Ground excavation pit between construction working and formed, to prevent heat carrier from revealing, corresponding anti-seep measure should be taken.It can manage
Solution, container 11 is not limited to structure, the shape that aforementioned exemplary illustrates, as long as the utensil of liquid phase heat carrier can be contained.
In the embodiment that Fig. 3 is presented, thermal source 12 is placed in container 11, for the heat carrier to being contained in container 11
Heating.It is appreciated that the set-up mode of thermal source 12 is not limited to be placed in this mode in container 11, for example, it is also possible to set
Fluid path 22 in heat carrier EGR 20（Referring to Fig. 5）Heat carrier is heated.That is, as long as thermal source 12 is set
In any position that can be heated to heat carrier of the present invention.
The heat carrier that the selects when selection of thermal source 12 is constructed based on the present invention and select appropriate form preferable, for example, hot
When carrier selects conduction oil, thermal source 12 is preferable using anti-explosion electric heater, to ensure safety.
Thermal source 12, for example, can be measured, be controlled using digital display type Temperature-controlled appliance, is treated when being heated to heat carrier
Keeping warm mode is transferred to automatically after reaching preset temperature.
Join Fig. 5 in the lump, heat carrier EGR 20 includes nozzle 21, fluid path 22 and conveyer 23.
In the lump referring to Fig. 3, along main shaft 1 circumferentially, its alignment sleeve of spout 211 is loaded on the main shaft bearing 2 of main shaft 1 to nozzle 21
Inner ring.Spout 211 is circumferential uniform preferable along nozzle 21, uniformly to heat the inner ring of main shaft bearing 2.
In the present embodiment, nozzle 21 is to be surrounded on the circumferential cyclic structure of main shaft 1.Nozzle 21 is not limited to foregoing integral ring
Shape structure, such as nozzle 21 can use monomer structure, be then wrapped around in main shaft 1 circumferentially also can, it is circumferential uniform preferable.
In the present embodiment, fluid path 22 is made up of first paragraph 221, second segment 222 and the 3rd section 223, and first paragraph 221 connects
Lead to container 11 to conveyer 23, second segment 222, the 3rd section of 223 connection that is one another in series, the outlet of second segment 222 and conveyer 23
Connection, the 3rd section 223 connects with nozzle 21, and then, fluid path 22 connects container 11 to institute's nozzle 21.
Preferably, first paragraph 221, second segment 222 can use but be not limited to hard pipeline, the 3rd section 223 using soft
Pipeline is preferable, such as rubber hose, is moved with nozzle during convenient construction 21 with driving correcting mechanism 30.
Conveyer 23 is used to control flowing of the heat carrier from container 11 by fluid path 22 to nozzle 21.Conveyer 23 can
Using but be not limited to pump.
For example, conveyer 23 uses pump, work can be driven by shaft coupling 26 by motor 24.Motor 24 is by control unit 25
Control, so as to control the flow velocity of heat carrier.
Preferably, first paragraph 221 is provided with filter 27, so as to which filter 27 is arranged at into fluid path 22.The
It is additionally provided with pipe clamp 28 for one section 221.
Driving correcting mechanism 30, which is used to apply, acts on the power drive shaft bearing 2 of main shaft bearing 2 along main shaft 1 to main shaft 1
The direction of wheel hub connection flange 5 movement.Driving correcting mechanism 30 can realize that high-precise synchronization compresses and correct, and make main shaft bearing 2
Inclination will not be produced along the axial-movement of main shaft 1, and then main shaft bearing 2 is corrected to regulation installation site.
The inner ring that the power that driving correcting mechanism 30 applies acts only on main shaft bearing 2 is preferable.
In the lump referring to Fig. 6, a kind of embodiment for driving correcting mechanism 30 is provided in of the invention.The driving correcting mechanism 30 wraps
Include three studs 31,32, three drive devices 33 of support member and power source 34.
One end of three studs 31 is individually fixed in the eyelet of wheel hub connection flange 5, and their other end couples from wheel hub
Flange 5 extends to the place direction of main shaft bearing 2.Stud 31 is used for the position for adjusting support member 32, to adapt to main shaft bearing 2 in master
The situation of different assembling deviations on axle 1.
Support member 32 is fixedly connected on stud 31, and in the present embodiment, support member 32 is triangular support bracket, is supported for fixed
Drive device 33.
Support member 32 is not limited to above-mentioned triangular support bracket structure, can also use other structures, such as circular ring structure, or its
His appropriate format.
Three drive devices 33 are respectively fixedly connected with support member 32, they along main shaft 1 circumferentially, for drive shaft
Bearing 2 moves along main shaft 1 to the direction of wheel hub connection flange 5.
Power source 34 is that drive device 33 provides driving power.Drive device 33 can use such as hydraulic cylinder, cylinder, electricity
Machine etc..
In the present embodiment, drive device 33 uses hydraulic cylinder, and in this case, power source 34 is hydraulic power unit, passes through pipe
Road 36 provides hydraulic medium to hydraulic cylinder.
In correction procedure, driving correcting mechanism 30 carries the displacement of color touch screen real-time display and load.Hydraulic cylinder has
There is overload protection function, more than meeting releasing pressure automatically after setting pressure, the safety of protection driving correcting mechanism 30.
In certain embodiments, three drive devices 33 are circumferential uniform along main shaft 1, with the end face circumference side of main shaft bearing 2
Apply active force to uniform.
In certain embodiments, set between end face drive device 33 and main shaft bearing 2 and that drive device 33 is opposite
Be equipped with the bearing disc 35 of ring-type, with increase the compression area of main shaft bearing 2 and by the power that drive device 33 applies uniformly transfer to
Main shaft bearing 2.For example, drive device 33, using in the case of hydraulic cylinder, bearing disc 35 is arranged on the piston rod end face of hydraulic cylinder
Between end face main shaft bearing 2 and that the piston rod end face is opposite.
Bearing disc 35 only uniformly transfers the power that drive device 33 applies to the inner ring of main shaft bearing 2, without acting on
The roller of main shaft bearing 2, outer ring are preferable, to prevent from damaging main shaft bearing 2.
Fig. 8 illustrates another embodiment of the driving correcting mechanism 30 of the present invention.The embodiment is presented with Fig. 6
The embodiment difference of driving correcting mechanism 30 be that its support member 32 is the quantity of annular disc structure and its stud 31
For the six roots of sensation.
In the lump referring to Fig. 9, in the embodiment for the driving correcting mechanism 30 that Fig. 8 is presented, drive device 33 uses pneumatic cylinder,
Pneumatic cylinder is arranged between the forward surface of the first disk 37 of ring-type and the second disk 38 of ring-type, and the first disk 37 is resisted against branch
Support member 32, the second disk 38 are resisted against bearing disc 35, i.e. the first disk 37 may be contained within support member 32 with holding with the second disk 38
Between platen 35.The housing end face of pneumatic cylinder is fixedly connected with the corresponding end-faces of the first disk 37, the end face of its piston rod and second
The corresponding end-faces of disk 38 are fixedly connected, and one end of four guide pillars 39 is fixedly connected respectively with the second disk 38 and the equal edge of its other end
The direction of first disk 37 extends across the through hole of the relevant position of the second disk 38, and guide pillar 39 corresponds and these through holes respectively
Slide precision-fit, and the first disk 37 relative to the second disk 38 along guide pillar 39 move back and forth when its motion track all the time with
The diameter parallel of main shaft 1（Overlap）, i.e. the first disk 37 and the second disk 38 compress bearing disc along the axis direction of main shaft 1 all the time
35 and do not tilted relative to main shaft 1.Wherein, the first disk 37, the second disk 38, guide pillar 39 and drive device 33 collectively form drive
Action-oriented structure.
In the embodiment for the driving correcting mechanism 30 that Fig. 8 is presented, power source 34（Not shown in Fig. 8, referring specifically to Fig. 6）
For pulsometer（Not shown in figure）, pulsometer pass through interface 361 drive 4 pneumatic cylinder synchronization actions.
In addition, the drive that the other structures of the embodiment for the driving correcting mechanism 30 that Fig. 8 is presented are presented with Fig. 6
The dynamic embodiment of correcting mechanism 30 is identical.
In the lump protective cover 40 is stamped referring to Fig. 7, the open top cover of container 11.Protective cover 40 includes the side wall 41 that surrounding encloses
And the top of closed side wall 41 and dismountable cover plate 42, prevented with protective cover in high-temperature heat carrier cyclic process, it is possible that
Splashing situation about hurting sb.'s feelings.After the completion of correction, cover plate 42 is covered at the top of side wall 41, prevents dust from falling into, pollutes heat carrier.
Protective cover 40 sets observation window, and observation window is provided with Transparent Parts 43, Transparent Parts 43 made of high temperature resistant oil resisting material
It can use but be not limited to lucite, correction situation is observed in correction procedure.
In certain embodiments, supporting arrangement 13 is additionally provided with container 11, supporting arrangement 13 is used for supporting spindle 1 in heat
On carrier liquid level, to ensure security and convenience when constructing.Supporting arrangement 13 can bear the weight of axis system, example
Such as existing axis system about 10T, so that wheel hub connection flange 5 will not be immersed in heat carrier preferably.
During construction, driven after thermal source 12 is heated to the filtered filtering of device 27 of heat carrier of preset temperature by conveyer 23
To nozzle 21, the inner ring of main shaft bearing 2, then the raceway by main shaft bearing 2 are then uniformly ejected into by spout 211, then
Return in container 11, re-start heating, so move in circles, realize the heating to the inner ring of main shaft bearing 2.
It should be noted, however, that the quantity of above-mentioned stud 31 is not particular value, it can also be most according to being actually needed
Amount.The quantity of above-mentioned drive device 33 is not particular value, and other quantity is can also be according to being actually needed.The number of above-mentioned guide pillar 39
Amount is not particular value, and other quantity is can also be according to being actually needed.
It should also be noted that above-mentioned Fig. 3 illustrates position of the main shaft 1 to main shaft bearing 2 on main shaft 1 under vertical state
Deviation is put to be corrected, those skilled in the art it is understood that it is contemplated that the present invention may be use with main shaft 1 it is horizontal or other
Position deviation of the main shaft bearing 2 on main shaft 1 can be corrected under appropriate state, that is, realize the purpose of the present invention.Main shaft 1
Position deviation of the main shaft bearing 2 on main shaft 1 is corrected relative to other states more preferably under vertical state.
It should be noted that each particular technique feature described in above-mentioned embodiment, in reconcilable feelings
Under condition, it can be combined by any suitable mode.Each particular technique described in different embodiments is special
Sign, in the case of reconcilable, can also be combined by any suitable mode each other.In order to avoid unnecessary
Repeat, the present invention is not described further to various combinations of possible ways.
Above with reference to embodiment to the present invention have been described in detail, it is illustrative and not restrictive, is not taking off
From changing and modifications under present general inventive concept, within protection scope of the present invention.
Claims (9)
1. a kind of main shaft bearing assembling deviation correcting system of wind generator set main shaft, including：
Container, it is used to contain liquid phase heat carrier；
Thermal source, it is heated to the heat carrier；
Nozzle, its along the main shaft circumferentially, its spout alignment sleeve loaded on the main shaft the main shaft bearing inner ring；
Fluid path, it connects the container to the nozzle；
Conveyer, it is used for the flowing for controlling the heat carrier from the container by the fluid path to the nozzle；With
And
Correcting mechanism is driven, it, which applies, acts on the power of the main shaft bearing and drive the main shaft bearing along the main shaft to the main shaft
Move in wheel hub connection flange direction；
Characterized in that, the driving correcting mechanism includes：
At least three studs, its one end are individually fixed in the eyelet of the wheel hub connection flange, and its other end couples from the wheel hub
Flange extends to direction where the main shaft bearing；
Support member, it is fixedly connected on the stud；
Multiple drive devices, its be fixedly connected on the support member and along the main shaft circumferentially, for driving the main shaft
Bearing moves along the main shaft to the wheel hub connection flange direction；And
Power source, it provides driving power for the drive device.
2. the main shaft bearing assembling deviation correcting system of wind generator set main shaft according to claim 1, it is characterised in that institute
It is to be surrounded on the circumferential cyclic structure of the main shaft to state nozzle.
3. the main shaft bearing assembling deviation correcting system of wind generator set main shaft according to claim 1, it is characterised in that institute
It is hydraulic cylinder to state drive device, and the power source is hydraulic power unit；Or the drive device is pneumatic cylinder, the power source is
Pulsometer.
4. the main shaft bearing assembling deviation correcting system of wind generator set main shaft according to claim 1, it is characterised in that institute
It is circumferentially uniform along the main shaft to state multiple drive devices.
5. the main shaft bearing assembling deviation correcting system of wind generator set main shaft according to claim 2, it is characterised in that institute
It is circumferentially uniform along the nozzle to state spout.
6. the main shaft bearing assembling deviation correcting system of wind generator set main shaft according to claim 3, it is characterised in that also
Including be arranged at the hydraulic cylinder piston rod end face and the main shaft bearing between end face that the piston rod end face is opposite
Ring-type bearing disc；Or also include being arranged at the piston rod end face of the pneumatic cylinder and the main shaft bearing and the piston rod
Ring-type bearing disc between the opposite end face in end face.
7. the main shaft bearing assembling deviation correcting system of the wind generator set main shaft according to any one of claim 1 to 6, it is special
Sign is, in addition to is arranged in the container and is used to support supporting arrangement of the main shaft on the heat carrier liquid level.
8. the main shaft bearing assembling deviation correcting system of the wind generator set main shaft according to any one of claim 1 to 6, it is special
Sign is, in addition to cover is placed on the protective cover of the container top opening.
9. the main shaft bearing assembling deviation correcting system of wind generator set main shaft according to claim 8, it is characterised in that institute
State protective cover and observation window is set, the observation window is provided with the Transparent Parts made of high temperature resistant oil resisting material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510867755.6A CN105345454B (en) | 2015-12-02 | 2015-12-02 | The main shaft bearing assembling deviation correcting system of wind generator set main shaft |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510867755.6A CN105345454B (en) | 2015-12-02 | 2015-12-02 | The main shaft bearing assembling deviation correcting system of wind generator set main shaft |
Publications (2)
| Publication Number | Publication Date |
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| CN105345454A CN105345454A (en) | 2016-02-24 |
| CN105345454B true CN105345454B (en) | 2018-01-30 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510867755.6A Active CN105345454B (en) | 2015-12-02 | 2015-12-02 | The main shaft bearing assembling deviation correcting system of wind generator set main shaft |
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| CN109099834B (en) * | 2017-06-20 | 2020-06-19 | 中国航发上海商用航空发动机制造有限责任公司 | Bolt hole alignment detection device |
| CN108838617B (en) * | 2018-08-27 | 2024-02-02 | 运达能源科技集团股份有限公司 | Main bearing hot sleeve pressing device of wind turbine generator |
| CN110653591A (en) * | 2019-10-21 | 2020-01-07 | 上海中船三井造船柴油机有限公司 | Local adjusting method for interference fit installation of crankshaft and chain wheel |
| CN112247522B (en) * | 2020-05-29 | 2022-02-22 | 中国航发沈阳发动机研究所 | Rotor press-fitting equipment |
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| JPS5741138A (en) * | 1980-08-13 | 1982-03-08 | Seiji Eto | Shrinkage fit method of metallic body |
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| CN101920431A (en) * | 2010-09-28 | 2010-12-22 | 中冶建工有限公司 | Method and device for hot assembling large-diameter bearing |
| CN202224903U (en) * | 2011-08-23 | 2012-05-23 | 上海宝钢设备检修有限公司 | Heating device for dismounting interference fit bearing |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1185703A (en) * | 1966-02-17 | 1970-03-25 | Skf Svenska Kullagerfab Ab | Improvements in and relating to the Mounting and Dismounting of Machine Elements |
| US4162601A (en) * | 1977-08-19 | 1979-07-31 | Buckeye Molding Company | Secondary closure, method and apparatus |
| JPS5741138A (en) * | 1980-08-13 | 1982-03-08 | Seiji Eto | Shrinkage fit method of metallic body |
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| CN101284354A (en) * | 2007-12-25 | 2008-10-15 | 中国第一重型机械集团公司 | Large-sized bearing heat disassembling device |
| CN201371354Y (en) * | 2008-12-31 | 2009-12-30 | 二重集团（德阳）重型装备股份有限公司 | Shaft hub interference joint pressing contraposition device |
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|---|---|
| CN105345454A (en) | 2016-02-24 |
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