CN105422624B - Debugging method for oil clearance of motor bearing - Google Patents
Debugging method for oil clearance of motor bearing Download PDFInfo
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- CN105422624B CN105422624B CN201510741009.2A CN201510741009A CN105422624B CN 105422624 B CN105422624 B CN 105422624B CN 201510741009 A CN201510741009 A CN 201510741009A CN 105422624 B CN105422624 B CN 105422624B
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- 238000000034 method Methods 0.000 title claims abstract description 37
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 claims description 89
- 230000005540 biological transmission Effects 0.000 claims description 42
- 238000005259 measurement Methods 0.000 claims description 27
- 238000006073 displacement reaction Methods 0.000 claims description 6
- 230000000630 rising effect Effects 0.000 claims description 2
- 230000003068 static effect Effects 0.000 abstract 1
- 239000003921 oil Substances 0.000 description 155
- 230000008859 change Effects 0.000 description 9
- 238000005452 bending Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 239000000314 lubricant Substances 0.000 description 4
- 230000004048 modification Effects 0.000 description 4
- 238000012986 modification Methods 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 229910000831 Steel Inorganic materials 0.000 description 3
- 230000008901 benefit Effects 0.000 description 3
- 230000005484 gravity Effects 0.000 description 3
- 238000005096 rolling process Methods 0.000 description 3
- 239000010959 steel Substances 0.000 description 3
- 230000005611 electricity Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000010720 hydraulic oil Substances 0.000 description 2
- 238000005461 lubrication Methods 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- 241000153246 Anteros Species 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 125000002015 acyclic group Chemical group 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 238000005098 hot rolling Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000003801 milling Methods 0.000 description 1
- 239000000178 monomer Substances 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C32/00—Bearings not otherwise provided for
- F16C32/06—Bearings not otherwise provided for with moving member supported by a fluid cushion formed, at least to a large extent, otherwise than by movement of the shaft, e.g. hydrostatic air-cushion bearings
- F16C32/0662—Details of hydrostatic bearings independent of fluid supply or direction of load
- F16C32/067—Details of hydrostatic bearings independent of fluid supply or direction of load of bearings adjustable for aligning, positioning, wear or play
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C32/00—Bearings not otherwise provided for
- F16C32/06—Bearings not otherwise provided for with moving member supported by a fluid cushion formed, at least to a large extent, otherwise than by movement of the shaft, e.g. hydrostatic air-cushion bearings
- F16C32/0629—Bearings not otherwise provided for with moving member supported by a fluid cushion formed, at least to a large extent, otherwise than by movement of the shaft, e.g. hydrostatic air-cushion bearings supported by a liquid cushion, e.g. oil cushion
- F16C32/064—Bearings not otherwise provided for with moving member supported by a fluid cushion formed, at least to a large extent, otherwise than by movement of the shaft, e.g. hydrostatic air-cushion bearings supported by a liquid cushion, e.g. oil cushion the liquid being supplied under pressure
- F16C32/0644—Details of devices to control the supply of liquids to the bearings
- F16C32/0648—Details of devices to control the supply of liquids to the bearings by sensors or pressure-responsive control devices in or near the bearings
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K5/00—Casings; Enclosures; Supports
- H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
- H02K5/16—Means for supporting bearings, e.g. insulating supports or means for fitting bearings in the bearing-shields
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Power Engineering (AREA)
- Sliding-Contact Bearings (AREA)
- Motor Or Generator Frames (AREA)
- Manufacture Of Motors, Generators (AREA)
Abstract
The invention relates to the field of static pressure sliding bearings, and discloses a method for debugging an oil clearance of a motor bearing, which aims to solve the technical problem that the value of the oil clearance of the bearing debugged in the prior art is not accurate enough.
Description
Technical field
The present invention relates to static-pressure sliding bearing field, more particularly to a kind of adjustment method of the oil clearance of bearing for electric machine.
Background technology
In the maintenance work of the roughing main motor of large-scale thin plate continuous hot-rolling mill, it is often necessary to debug each axle of roughing main motor
The extreme pressure lubricant oil clearance held.Generally, the measurement of the oil clearance is to start axle near antero posterior axis bearing by measuring high-pressure oil pump
The difference of face height change is realized.The adjustment method of such roughing main motor sliding bearing oil clearance of prior art typically has
It is following two：
First method is to maintain motor and is in the simple adjustment method of connecting shaft state with transmission connecting shaft.
Second method is to separate the roughing main motor and transmission connecting shaft dismounting, then individually carries out roughing main motor
The debugging of high-tension lubrication oil clearance, again transmission connecting shaft is recovered to install after the completion of debugging efforts.
Prior art above two method common ground is only to place a dial gauge near each bearing block at axial plane.
Above-mentioned first method, regard roughing motor shaft as a preferable rigid body, do not consider motor shaft by various
Pressure influence and produce the bending on microcosmic, thus when carrying out motor bearings high-tension lubrication oil clearance debugging efforts, it is assumed that bearing
The height change of axial plane is equal with the change of corresponding shaft bearing high pressure oil clearance near seat, so only placing one near each bearing block
Individual dial gauge.Its advantage is simple to operate, is easily realized, but its shortcoming is as follows, and motor shaft is being kept and transmission connecting shaft connecting shaft shape
During state, by the transmission connecting shaft is under different conditions and caused different pressures are influenceed, motor shaft is formed on microcosmic
Elastic bending, the number range of motor bearings oil clearance is decimillimeter level, and the influence of above-mentioned motor bending shaft is just in this order of magnitude model
Within enclosing, therefore, the lubricant oil gap measured by the method will produce very important error.
Above-mentioned second method is to separate main motor and transmission connecting shaft dismounting, is then individually carrying out main motor bearing
Extreme pressure lubricant oil clearance is debugged, and recovers to install again after the completion of debugging efforts.But for such large-scale roughing mill, transmission connecting shaft
Length is more than 10 meters, and weight is at 55 tons or so, and the workload that it is dismounted is very big, and time-consuming, efficiency is low, typically stopping in short-term
Machine periodical repair can not be realized.And the monomer of motor bearings oil clearance debugs, connecting shaft different from actual working state during motor connecting shaft
Motor shaft stressing conditions change afterwards, equally also result in bearing oil clearance tune-up data inaccuracy.
Therefore, technical problem not accurate enough when measuring the bearing oil clearance value debugged in the prior art be present.
The content of the invention
The invention provides a kind of adjustment method of the oil clearance of bearing for electric machine, to solve present in prior art to institute
Not accurate enough technical problem during the bearing oil clearance value measurement of debugging.
The embodiment of the present invention provides a kind of adjustment method of the oil clearance of bearing for electric machine, and the motor includes being used to export turning
The motor shaft of square, close external load for supporting the motor shaft an end fore bearing and for supporting the electricity
The rear bearing of another end of the remote external load of arbor, the motor shaft is close to an end of the external load
Portion is connected to an end of transmission connecting shaft, and another end of the transmission connecting shaft is connected with the external load, described
Transmission connecting shaft is rotated by spindle support member supports, and the lower bearing of the fore bearing is provided with for the motor shaft to be jacked up
Fore bearing pressure oil jacks hole, and the rear bearing pressure oil overhold that the rear bearing is provided with for the motor shaft to be jacked up rises hole,
It is rotatably connected at the top of the transmission connecting shaft support member with the transmission connecting shaft, and the support force of the support member is pre- first
If can adjust in scope, pressure oil is controlled jacks hole and the rear bearing pressure oil overhold liter from the fore bearing pressure oil respectively
Hole is sprayed so that the motor shaft to be jacked up, and methods described includes：
S1：The support pressure for keeping the transmission connecting shaft support member is zero and stops the motor bearings pressure oil
It is supplied to the fore bearing pressure oil jacking hole and the rear bearing pressure oil overhold rises hole；
S2：It is located in the motor shaft at the fore bearing and fore bearing is set respectively along the bearing block both sides in shaft extension direction
Seat front height measuring instrument and front-end bearing pedestal posterior height measuring instrument, and in the motor shaft on front side of the rear bearing block
Height-gauge is set；
S3：The support pressure is adjusted to pressure corresponding when the external load works；
S4：Record the first front-end bearing pedestal front height shift value, the institute that the front-end bearing pedestal front height measuring instrument measures
State the first front-end bearing pedestal posterior height shift value and rear bearing block front side height that front-end bearing pedestal posterior height measuring instrument measures
The first rear bearing block front height shift value that degree measuring instrument measures；
S5：Open the fore bearing pressure oil jacking hole and the rear bearing pressure oil overhold rises the pressure oil supply in hole；
S6：Record the second front-end bearing pedestal front height shift value, the institute of the front-end bearing pedestal front height measuring instrument measurement
State high on front side of the second front-end bearing pedestal posterior height shift value and the rear bearing block of front-end bearing pedestal posterior height measuring instrument measurement
Spend the second rear bearing block front height shift value of measuring instrument measurement；
S7：Based on the first front-end bearing pedestal front height shift value, the first front-end bearing pedestal posterior height shift value,
The first rear bearing block front height shift value, the second front-end bearing pedestal front height shift value, second fore bearing
Seat posterior height shift value, the second rear bearing block front height shift value obtain the value of oil clearance to calculate；
S8：If the value of the oil clearance in the second preset range, will be fed separately to the fore bearing pressure oil overhold
The pressure for rising the pressure oil in hole and the rear bearing pressure oil overhold liter hole uses as a result；If the value of the oil clearance is not pre-
Determine in scope, be then fed separately to the fore bearing pressure oil jacking hole and the rear bearing according to the value of the oil clearance to adjust
The pressure of the pressure oil in pressure oil jacking hole, and step S6-S8 is performed again, until the value of the oil clearance is default described second
In the range of.
Alternatively, it is described based on high on rear side of the first front-end bearing pedestal front height shift value, first front-end bearing pedestal
Spend shift value, the first rear bearing block front height shift value, the second front-end bearing pedestal front height shift value, described the
Two front-end bearing pedestal posterior height shift values, the second rear bearing block front height shift value obtain the oil clearance to calculate
Value, it is specially：
The first front-end bearing pedestal front height shift value is designated as haB51, by the first front-end bearing pedestal posterior height position
Shifting value is designated as haB52, the first rear bearing block front height shift value is designated as haB3, will be high on front side of second front-end bearing pedestal
Degree shift value is designated as hbB51, the second front-end bearing pedestal posterior height shift value is designated as haB52, before second rear bearing block
Side height displacement value is designated as hbB3；
gB5=hbB5-haB5, wherein, hbB5=(hbB52+hbB51)/2, haB5=(haB52+haB51)/2, gB5For the motor
The oil clearance value of front-end bearing pedestal；
gB3=hbB3-haB3, wherein gB3For the oil clearance value of the rear bearing block of the motor.
Alternatively, the value according to the oil clearance is fed separately to the fore bearing pressure oil jacking hole and institute to adjust
The pressure that rear bearing pressure oil overhold rises the pressure oil in hole is stated, is specifically included：
When corresponding shaft bearing oil clearance value is less than the minimum value of second preset range, the pressure piping of big corresponding shaft bearing is opened
Choke valve；
When corresponding shaft bearing oil clearance value is more than the maximum of second preset range, the pressure piping of corresponding shaft bearing is turned down
Choke valve.
Alternatively, second preset range is：0.07mm is between 0.15mm.
One or more technical scheme in the embodiment of the present invention, at least has the following technical effect that or advantage：
1st, the adjustment method of the oil clearance of bearing for electric machine provided in an embodiment of the present invention need not be by motor and drive shaft system
Split, it becomes possible to detect the bearing oil clearance value of motor, avoid because by motor and after being split with drive shaft system again
Cause the inaccurate technical problem of bearing oil clearance value after assembling, so as to reach the more accurate skill of bearing oil clearance value detected
Art effect, also, save workload and the time of dismounting motor and drive shaft system；
2nd, a measuring instrument is respectively placed in the front-end bearing pedestal front and rear sides axial plane of motor, is so directed to the same part of bearing
Multiple sampled values can be obtained, and then can further improve the precision of the oil clearance value of detected bearing.
Brief description of the drawings
Fig. 1 is the flow chart of the adjustment method of the oil clearance of bearing for electric machine provided in an embodiment of the present invention；
Fig. 2 is the schematic diagram of the drive shaft system of motor provided in an embodiment of the present invention；
Fig. 3 is the structure chart of bearing provided in an embodiment of the present invention；
Fig. 4 a be bearing oil clearance of the embodiment of the present invention adjustment method in spindle support when being zero, spindle gravity causes motor
Curved schematic diagram on axle；
Fig. 4 b are that spindle top lift overcomes when connecing support in the adjustment method of bearing oil clearance of the embodiment of the present invention normally to jack
Gravity causes curved schematic diagram under motor shaft.
Embodiment
The invention provides a kind of adjustment method of the oil clearance of bearing for electric machine, to solve present in prior art to institute
Not accurate enough technical problem during the bearing oil clearance value measurement of debugging.
Technical scheme in the embodiment of the present application is the above-mentioned technical problem of solution, and general thought is as follows：
A kind of adjustment method of the oil clearance of bearing for electric machine is provided, motor includes the motor shaft for output torque, used
In the fore bearing of end of the close external load of support motor shaft and remote external load for supporting motor shaft
The rear bearing of another end, motor shaft are connected to an end of transmission connecting shaft close to an end of external load, transmission
Another end of spindle is connected with external load, and transmission connecting shaft is rotated by spindle support member supports, the lower axle of fore bearing
Watt it is provided with the fore bearing pressure oil for motor shaft to be jacked up and jacks hole, after rear bearing is provided with for motor shaft to be jacked up
Bearing pressure oil overhold rises hole, is rotatably connected at the top of transmission connecting shaft support member with transmission connecting shaft, and the support force of support member exists
It can adjust in first preset range, pressure oil is controlled rises hole and rear bearing pressure oil overhold liter hole from preceding bearing pressure oil overhold respectively
Spray so that motor shaft to be jacked up, this method includes：S1：The support pressure of transmission connecting shaft support member is kept to be zero and make motor
Bearing pressure oil stops being supplied to fore bearing pressure oil jacking hole and rear bearing pressure oil overhold rises hole；S2：Before motor shaft is located at
The bearing block both sides along shaft extension direction at bearing set high on rear side of front-end bearing pedestal front height measuring instrument and front-end bearing pedestal respectively
Measuring instrument is spent, and height-gauge is set on front side of rear bearing block in motor shaft；S3：Support pressure is adjusted to external load
Corresponding pressure during work；S4：The first front-end bearing pedestal front height position that record front-end bearing pedestal front height measuring instrument measures
The the first front-end bearing pedestal posterior height shift value and rear bearing block front height that shifting value, front-end bearing pedestal posterior height measuring instrument measure
The first rear bearing block front height shift value that measuring instrument measures；S5：Open fore bearing pressure oil jacking hole and rear bearing pressure
Oil overhold rises the pressure oil supply in hole；S6：Record the second front-end bearing pedestal front height of front-end bearing pedestal front height measuring instrument measurement
Shift value, the second front-end bearing pedestal posterior height shift value of front-end bearing pedestal posterior height measuring instrument measurement and rear bearing block front side are high
Spend the second rear bearing block front height shift value of measuring instrument measurement；S7：Based on the first front-end bearing pedestal front height shift value,
One front-end bearing pedestal posterior height shift value, the first rear bearing block front height shift value, the second front-end bearing pedestal front height displacement
Value, the second front-end bearing pedestal posterior height shift value, the second rear bearing block front height shift value come calculate obtain oil clearance value；
S8：If the value of oil clearance in the second preset range, will be fed separately to fore bearing pressure oil jacking hole and rear bearing pressure
The pressure that oil overhold rises the pressure oil in hole uses as a result；If the value of oil clearance is not within the predefined range, the value according to oil clearance
To adjust the pressure for the pressure oil for being fed separately to fore bearing pressure oil jacking hole and rear bearing pressure oil overhold liter hole, and hold again
Row step S6-S8, until the value of oil clearance is in the second preset range.
As can be seen that the adjustment method of the oil clearance of bearing for electric machine provided in an embodiment of the present invention need not be by motor with passing
Moving axis system is split, it becomes possible to detect the bearing oil clearance value of motor, avoid because by motor with being torn open with drive shaft system
Cause the inaccurate technical problem of bearing oil clearance value after being assembled again after point, it is more accurate so as to reach the bearing oil clearance value detected
True technique effect, also, save workload and the time of dismounting motor and drive shaft system；
Meanwhile a measuring instrument is respectively placed in the front-end bearing pedestal front and rear sides axial plane of motor, so for the same of bearing
Part can obtain multiple sampled values, and then can further improve the precision of the oil clearance value of detected bearing.
In order to be better understood from above-mentioned technical proposal, below by accompanying drawing and specific embodiment to technical solution of the present invention
It is described in detail, it should be understood that the specific features in the embodiment of the present invention and embodiment are to the detailed of technical solution of the present invention
Thin explanation, rather than the restriction to technical solution of the present invention, in the case where not conflicting, the embodiment of the present invention and embodiment
In technical characteristic can be mutually combined.
The embodiment of the present invention provides a kind of adjustment method of the oil clearance of bearing for electric machine, and motor is included for output torque
Motor shaft, close external load for supporting motor shaft an end fore bearing and for support motor shaft away from outer
The rear bearing of another end of load is connect, motor shaft is connected to an end of transmission connecting shaft close to an end of external load
Portion, another end of transmission connecting shaft are connected with external load, and transmission connecting shaft is rotated by spindle support member supports, fore bearing
Lower bearing be provided with and jack hole for the fore bearing pressure oil that jacks up motor shaft, rear bearing is provided with for by motor shaft top
The rear bearing pressure oil overhold risen rises hole, is rotatably connected at the top of transmission connecting shaft support member with transmission connecting shaft, specifically, this fulcrum
There is a rolling bearing at place, and spindle support member is propped up in bearing outer ring, and the support force of support member can in the first preset range
Regulation, pressure oil, which is controlled to rise hole and rear bearing pressure oil overhold from preceding bearing pressure oil overhold respectively and rise hole, to be sprayed with by motor shaft top
Rise, refer to Fig. 1, this method includes：
S1：The support pressure for keeping transmission connecting shaft support member is zero and motor bearings pressure oil is stopped before being supplied to
Bearing pressure oil overhold rises hole and rear bearing pressure oil overhold rises hole；
S2：Set respectively in the bearing block both sides along shaft extension direction that motor shaft is located at fore bearing high on front side of front-end bearing pedestal
Measuring instrument and front-end bearing pedestal posterior height measuring instrument are spent, and height-gauge is set on front side of rear bearing block in motor shaft；
S3：The support pressure of support member is adjusted to pressure corresponding when external load works；
S4：The first front-end bearing pedestal front height shift value, the fore bearing that record front-end bearing pedestal front height measuring instrument measures
The the first front-end bearing pedestal posterior height shift value and rear bearing block front height measuring instrument that seat posterior height measuring instrument measures measure
The first rear bearing block front height shift value；
S5：Open fore bearing pressure oil jacking hole and rear bearing pressure oil overhold rises the pressure oil supply in hole；
S6：Record the second front-end bearing pedestal front height shift value, the fore bearing of front-end bearing pedestal front height measuring instrument measurement
Second front-end bearing pedestal posterior height shift value of seat posterior height measuring instrument measurement and the measurement of rear bearing block front height measuring instrument
The second rear bearing block front height shift value；
S7：Based on the first front-end bearing pedestal front height shift value, the first front-end bearing pedestal posterior height shift value, the first rear axle
Bearing front height shift value, the second front-end bearing pedestal front height shift value, the second front-end bearing pedestal posterior height shift value, second
Rear bearing block front height shift value obtains the value of oil clearance to calculate；
S8：If the value of oil clearance in the second preset range, will be fed separately to fore bearing pressure oil jacking hole with after
The pressure that bearing pressure oil overhold rises the pressure oil in hole uses as a result；If the value of oil clearance is not within the predefined range, foundation
The value of oil clearance is fed separately to the pressure for the pressure oil that fore bearing pressure oil jacks hole and rear bearing pressure oil overhold liter hole to adjust,
And step S6-S8 is performed again, until the value of oil clearance is in the second preset range.
As further preferred embodiment, bearing oil clearance refers to the high pressure of motor sliding bearing in motor transmission shaft system
Lubricant oil gap.
Please continue to refer to Fig. 2, Fig. 2 is the schematic diagram of the drive shaft system of motor provided in an embodiment of the present invention, such as Fig. 2 institutes
Show, the drive shaft system includes：Machine shaft 20a, the transmission connecting shaft 20b for being connected to machine shaft 20a, it is supported in transmission connecting shaft
20b transmission connecting shaft support meanss 20c, the operation roll of mill 20d for being connected to transmission connecting shaft 20b；The forward and backward bearing shell 20e of motor,
It is respectively arranged at machine shaft 20a both ends；
Wherein, upper transmission connecting shaft support meanss 20c, underdrive knot axle support meanss 21d are equivalent to the support of pressure adjustable
Hydraulic cylinder, the supporting cylinder provide holding power can be adjusted zero between maximum holding power, using steel mill electric machine as
Example, when the supporting cylinder external load works corresponding pressure refer to motor by motor shaft drive transmission connecting shaft and then
The situation of roll steel rolling is driven, has defined hydraulic oil lift-up pressure generally for supporting cylinder for specific milling train,
It is not limited in the present embodiment, is defined by the needs for meeting actual conditions；It is remote before drive shaft system is close to roughing load side
After load side is；The bearing of motor is, for example,：Spherical aligning watt sliding bearing.
Fig. 3 is refer to, Fig. 3 is the structure chart of bearing provided in an embodiment of the present invention, and bearing is as shown in figure 3, include again：
Machine shaft 30；
High pressure oil clearance 31a between bearing shell 31 before motor, with machine shaft 30 be present, have aligning seat on bearing shell 31 before motor
31b；
High-pressure oil pipe and regulating valve 32, bearing shell 31 before motor is connected to, with machine shaft 30 in high pressure oil clearance 31a positions phase
Connect；
High pressure oil clearance 33a between electric motor back shaft watt 33, with machine shaft 30 be present, have aligning seat on electric motor back shaft watt 33
33b；
High-pressure oil pipe and regulating valve 34, are connected to electric motor back shaft watt 33, connect with machine shaft 30 in high pressure oil clearance position.
In addition, the bearing shell of motor sliding bearing is designed as spherical aligning watt, it is exactly to adapt to roughing electricity that aligning watt, which sets purpose,
Distortion of the machine drive shaft system in different conditions.
Fig. 1, Fig. 2 and Fig. 3 are please also refer to, for motor fore bearing, inventor has found in debugging process is measured
Following phenomenon：1. when motor bearings pressure oil stop being supplied to fore bearing pressure oil jacking hole and after bearing pressure oil overhold rise hole
In the state of, when the support pressure of support member is worked by acyclic homologically trioial to external load during corresponding pressure, before the motor
Dial gauge measures height " rise " change on front side of bearing block, and dial gauge measures height " reduction " on rear side of the motor front-end bearing pedestal
Change；2. the fore bearing pressure oil jacking hole is opened on the basis of above-mentioned " 1. " and the rear bearing pressure oil overhold rises hole
Pressure oil supplies, and now dial gauge measures on rear side of dial gauge and the motor front-end bearing pedestal on front side of the motor front-end bearing pedestal
Highly " rise " changes, but " rise " value that dial gauge measures on front side of the motor front-end bearing pedestal is more than the motor front-end bearing pedestal
" rise " value that rear side dial gauge measures." 1. " phenomenon shows bearing using motor fore bearing aligning bearing shell as fulcrum, bearing both sides
Axial plane height has certain change under different conditions because motor shaft elastic bending deflection be present, while shows under " 1. " state,
Above-mentioned spindle support force does not make to produce gap between the axle of fore bearing and lower axle tiling；What is more important phenomenon " 2. " table
It is bright, the change of the high pressure oil pressure of bearing is supplied, also the degree of bending shaft is had an impact, " 2. " phenomenon shows, described in unlatching
After fore bearing pressure oil jacks the pressure oil supply in hole and the rear bearing pressure oil overhold liter hole, in the front side of front-end bearing pedestal with after
Obtained oil clearance value is measured at side two to have differences, and larger error can be caused by using any as oil clearance value.Cause
This, it is necessary to set front-end bearing pedestal front height measurement table B51 and front-end bearing pedestal posterior height respectively at the front-end bearing pedestal of motor
Measurement table B52, and the reading by measuring B51 and B52 average it is difference right to reduce the degree of crook of motor bearings
Influence caused by the bearing oil clearance value detected.
Above-mentioned phenomenon is interpretable as follows：Spindle support is different with the state of operation roll of mill, and the degree of crook of motor shaft is not
Together；The pressure of hydraulic oil is different, and the degree of crook of axle is also different.As shown in fig. 4 a, the supporting cylinder pressure of spindle support is
When zero, spindle gravity is applied to motor shaft end, makes machine shaft that upper curved trend be presented, and as shown in Figure 4 b, spindle support hydraulic pressure
During normal pressure of the cylinder to the work of upper external load, machine shaft by rotor self gravitation influenceed and in now curved trend.
In S1, specifically, that is, the support pressure for keeping the supporting cylinder 20c of transmission connecting shaft is zero, and makes motor bearings pressure
Oil stops being supplied to fore bearing pressure oil jacking hole and rear bearing pressure oil overhold rises hole.
In S2, specifically, i.e., front-end bearing pedestal front height is set to measure respectively in the front-end bearing pedestal both sides of motor shaft
Instrument B51 and front-end bearing pedestal posterior height measurement B52, and height-gauge is set on front side of rear bearing block in motor shaft
B3；In specific implementation process, height-gauge displacement measuring equipment such as can be dial gauge, amesdial or scale will
The main body of dial gauge, amesdial etc., which is fixed on, needs the position that sets, and by the detection thimble and motor of dial gauge, amesdial etc.
The axial plane contact of axle, is just repeated no more herein.
In S3, specifically, i.e., supporting cylinder 20c support pressure is adjusted to corresponding when external load works
Pressure, can be that motor drives transmission connecting shaft to be carried and then hydraulic cylinder when driving roll steel rolling by motor shaft in the present embodiment
The support pressure of confession, is just repeated no more herein.
In S4, specifically, namely the first front-end bearing pedestal front side that record front-end bearing pedestal front height measurement table measures
Height displacement value haB51, the first front-end bearing pedestal posterior height shift value h for measuring of front-end bearing pedestal posterior height measurement tableaB52With it is rear
The first rear bearing block front height shift value h that bearing block front height measurement table measuresaB3。
In S5, specifically, will being also used for control, bearing pressure oil overhold rises hole and rear bearing pressure oil overhold liter forward
The ball valve of hole fuel feeding is opened, and the pressure oil supply in hole is risen so as to open fore bearing pressure oil jacking hole and rear bearing pressure oil overhold.
In S6, specifically, namely on front side of the second front-end bearing pedestal of record front-end bearing pedestal front height measurement table measurement
Height displacement value hbB51, front-end bearing pedestal posterior height measurement table measurement the second front-end bearing pedestal posterior height shift value haB52With it is rear
Second rear bearing block front height shift value h of bearing block front height measurement table measurementbB3。
In S7, specifically, the oil clearance value at two bearings can be calculated by equation below：
gB5=hbB5-haB5, wherein, hbB5=(hbB52+hbB51)/2, haB5=(haB52+haB51)/2, gB5For the front axle of motor
The oil clearance value of bearing；
gB3=hbB3-haB3, wherein gB3For the oil clearance value of the rear bearing block of motor.
In S8, specifically, if calculating obtained g in S7B3And gB5In the second preset range, then it can incite somebody to action
The pressure for being fed separately to the pressure oil in fore bearing pressure oil jacking hole and rear bearing pressure oil overhold liter hole uses as a result；
In practical application, motor bearings oil clearance value is generally 0.04mm between 0.2mm, and in the present embodiment, the second preset range can
Think that 0.07mm between 0.15mm, to eliminate caused error in engineering practice, further reduces the risk of error band.
In specific implementation process, if calculating obtained g in S7B3And gB5Not in the second preset range, corresponding
When bearing oil clearance value is less than the minimum value of the second preset range, the choke valve of the pressure piping of big corresponding shaft bearing is driven, or right
When answering the bearing oil clearance value to be more than the maximum of the second preset range, the choke valve of the pressure piping of corresponding shaft bearing is turned down, and again
Perform S6-S8 so that calculate obtained gB3And gB5In the second preset range, ensure the normal need of production, herein just not
Repeat again.
Certainly, it is necessary to which explanation, in the present embodiment, the adjustment method for describing the oil clearance of bearing for electric machine are directed to one
The process that platform motor is adjusted, by the introduction of the present embodiment, in actual applications, the technical staff belonging to this area can
According to actual conditions, set and close for the bearing number of the respective power transmission shaft of multiple electric motors or the multichannel power transmission shaft of a motor
The elevation carrection table of suitable number, so as to accurately measure the oil clearance value at each bearing, to meet the needs of actual conditions, herein
Just repeat no more.
One or more technical scheme in the embodiment of the present invention, at least has the following technical effect that or advantage：
1st, the adjustment method of the oil clearance of bearing for electric machine provided in an embodiment of the present invention need not be by motor and drive shaft system
Split, it becomes possible to detect the bearing oil clearance value of motor, avoid because by motor and after being split with drive shaft system again
Cause the inaccurate technical problem of bearing oil clearance value after assembling, so as to reach the more accurate skill of bearing oil clearance value detected
Art effect, also, save workload and the time of dismounting motor and drive shaft system；
2nd, a measuring instrument is respectively placed in the front-end bearing pedestal front and rear sides axial plane of motor, is so directed to the same part of bearing
Multiple sampled values can be obtained, and then can further improve the precision of the oil clearance value of detected bearing.
Although preferred embodiments of the present invention have been described, but those skilled in the art once know basic creation
Property concept, then can make other change and modification to these embodiments.So appended claims be intended to be construed to include it is excellent
Select embodiment and fall into having altered and changing for the scope of the invention.
Obviously, those skilled in the art can carry out various changes and modification without departing from this hair to the present invention
Bright spirit and scope.So, if the present invention these modifications and variations belong to the claims in the present invention and its
Within the scope of equivalent technologies, then the present invention is also intended to comprising including these changes and modification.
Claims (4)
1. a kind of adjustment method of the oil clearance of bearing for electric machine, the motor includes the motor shaft for output torque, for propping up
Support the fore bearing of an end of the close external load of the motor shaft and for supporting the remote described outer of the motor shaft
The rear bearing of another end of load is connect, the motor shaft is connected to transmission connecting shaft close to an end of the external load
An end, another end of the transmission connecting shaft is connected with the external load, and the transmission connecting shaft is by spindle branch
Support part part support rotating, the lower bearing of the fore bearing are provided with the fore bearing pressure oil jacking for the motor shaft to be jacked up
Hole, the rear bearing pressure oil overhold that the rear bearing is provided with for the motor shaft to be jacked up rise hole, the transmission connecting shaft support
Component top is rotatably connected with the transmission connecting shaft, and the support force of the support member can adjust in the first preset range,
Pressure oil is controlled jacks hole and the rear bearing pressure oil overhold liter hole ejection with by described in from the fore bearing pressure oil respectively
Motor shaft jacks up, it is characterised in that methods described includes：
S1：The support pressure for keeping the transmission connecting shaft support member is zero and the motor bearings pressure oil is stopped supply
Hole is jacked to the fore bearing pressure oil and the rear bearing pressure oil overhold rises hole；
S2：Before front-end bearing pedestal is set respectively in the bearing block both sides along shaft extension direction that the motor shaft is located at the fore bearing
Side height-gauge and front-end bearing pedestal posterior height measuring instrument, and set in the motor shaft on front side of the rear bearing block
Height-gauge；
S3：The support pressure of the support member is adjusted to pressure corresponding when the external load works；
S4：Record the first front-end bearing pedestal front height shift value that the front-end bearing pedestal front height measuring instrument measures, it is described before
The the first front-end bearing pedestal posterior height shift value and the rear bearing block front height that bearing block posterior height measuring instrument measures are surveyed
The first rear bearing block front height shift value that amount instrument measures；
S5：Open the fore bearing pressure oil jacking hole and the rear bearing pressure oil overhold rises the pressure oil supply in hole；
S6：Record front-end bearing pedestal front height measuring instrument measurement the second front-end bearing pedestal front height shift value, it is described before
Second front-end bearing pedestal posterior height shift value of bearing block posterior height measuring instrument measurement and the rear bearing block front height are surveyed
Measure the second rear bearing block front height shift value of instrument measurement；
S7：Based on the first front-end bearing pedestal front height shift value, the first front-end bearing pedestal posterior height shift value, described
After first rear bearing block front height shift value, the second front-end bearing pedestal front height shift value, second front-end bearing pedestal
Side height displacement value, the second rear bearing block front height shift value come calculate obtain oil clearance value；
S8：If the value of the oil clearance in the second preset range, will be fed separately to the fore bearing pressure oil jacking hole
The pressure for the pressure oil for rising hole with the rear bearing pressure oil overhold uses as a result；If the value of the oil clearance is not in predetermined model
In enclosing, then the fore bearing pressure oil jacking hole and the rear bearing pressure are fed separately to according to the value of the oil clearance to adjust
Oil overhold rises the pressure of the pressure oil in hole, and performs step S6-S8 again, until the value of the oil clearance is in second preset range
It is interior.
2. adjustment method as claimed in claim 1, it is characterised in that described to be based on the first front-end bearing pedestal front height position
Before shifting value, the first front-end bearing pedestal posterior height shift value, the first rear bearing block front height shift value, described second
Bearing block front height shift value, the second front-end bearing pedestal posterior height shift value, the second rear bearing block front height
Shift value obtains the value of the oil clearance to calculate, and is specially：
The first front-end bearing pedestal front height shift value is designated as haB51, by the first front-end bearing pedestal posterior height shift value
It is designated as haB52, the first rear bearing block front height shift value is designated as haB3, by the second front-end bearing pedestal front height position
Shifting value is designated as hbB51, the second front-end bearing pedestal posterior height shift value is designated as haB52, will be high on front side of second rear bearing block
Degree shift value is designated as hbB3；
gB5=hbB5-haB5, wherein, hbB5=(hbB52+hbB51)/2, haB5=(haB52+haB51)/2, gB5For the front axle of the motor
The oil clearance value of bearing；
gB3=hbB3-haB3, wherein gB3For the oil clearance value of the rear bearing block of the motor.
3. adjustment method as claimed in claim 1, it is characterised in that the value according to the oil clearance is supplied respectively to adjust
The pressure of the pressure oil in hole and the rear bearing pressure oil overhold liter hole is jacked to the fore bearing pressure oil, is specifically included：
When corresponding shaft bearing oil clearance value is less than the minimum value of second preset range, the section of the pressure piping of big corresponding shaft bearing is opened
Flow valve；
When corresponding shaft bearing oil clearance value is more than the maximum of second preset range, the section of the pressure piping of corresponding shaft bearing is turned down
Flow valve.
4. adjustment method as claimed in claim 1, it is characterised in that second preset range is：0.07mm to 0.15mm
Between.
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| CN201510741009.2A CN105422624B (en) | 2015-11-02 | 2015-11-02 | Debugging method for oil clearance of motor bearing |
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| CN201510741009.2A CN105422624B (en) | 2015-11-02 | 2015-11-02 | Debugging method for oil clearance of motor bearing |
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| GB1186381A (en) * | 1966-03-28 | 1970-04-02 | Cie Electro Mechanique | Rotary Electric Machines |
| DE1775375A1 (en) * | 1968-08-03 | 1972-04-06 | Hamburger Flugzeugbau Gmbh | Suspension for a hydraulic cylinder |
| ES400891A1 (en) * | 1971-03-18 | 1975-01-16 | Siemens Ag | Improvements in devices for the accommodation of electromotorically powered shafts. (Machine-translation by Google Translate, not legally binding) |
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| CN105422624A (en) | 2016-03-23 |
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