CN101814785A - Standard derived asynchronous cage type hoisting motor - Google Patents
Standard derived asynchronous cage type hoisting motor Download PDFInfo
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- CN101814785A CN101814785A CN200910046404A CN200910046404A CN101814785A CN 101814785 A CN101814785 A CN 101814785A CN 200910046404 A CN200910046404 A CN 200910046404A CN 200910046404 A CN200910046404 A CN 200910046404A CN 101814785 A CN101814785 A CN 101814785A
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Abstract
The invention discloses a standard derived asynchronous cage type hoisting motor which comprises a motor shell, a stator, a rotor and other parts, and ordinary IEC standard asynchronous motor parts are basically used and can be interchanged except specific requirements; the materials of the stator and the rotor of the motor adopt silicon steel sheets which are rolled through a high-performance energy-saving process; and electromagnetic design is a normative design according to a motor standard and a special hoisting motor specific requirement. A motor end cover bearing chamber hole is matched with a bearing outer ring, a normal working state is selected as a preferred matching deviation computing basis according to an interstitial variation quantity difference generated by expansion coefficients under in three different states of natural assembly, normal working and special working of different matching materials, and a design processing deviation is determined by replacing a past selecting mode with a computing mode. When an expansion variation quantity difference is larger, an O-shaped ring is added for regulation. The invention always ensures a bearing to operate in an oil foam state so as to improve the non-failure operation time and quality of the motor.
Description
Technical field:
The present invention relates to a kind of standard derived asynchronous cage type hoisting motor in the dynamo-electric field.
Background technology:
The asynchronous cage type motor mainly contains rotor that permeability magnetic material makes, embed with the lead winding and produce rotating magnetic field in the stator that permeability magnetic material makes and drive cast-aluminum rotor work, and rotor and axle combination, axle and rolling bearing combining by fixture front and rear cover and shell are arranged.Because globalization, rapid, the automation of modern basic industries, the basic product versatility, the reliability requirement of property, specificity and quality improves constantly in batches, causes in the basic product motor instructions for use and change also to increase thereupon.Particularly different areas and use occasion change, and all may be created in the variation in the critical field.This has just required suitable part motor product basic part, can adapt to product and cooperate the application that changes, and designs satisfactory new product simultaneously on this basis.According to universal design in the past, because professional classification is too thin, same medium and small design of electrical motor and production, often the motor kind of a series just has a cover group and enterprise to produce.Parts that much can be general in the formation base derivation product can't adopt easily, corresponding can influence product enters the globalizing market time, the modern enterprise development just must reach rapid and the product component versatility as far as possible, thereby the batch that the decision parts are produced, and the batch of producing also reaches the reliability of product quality easily.Special designs mainly is to require the reliability of specificity and quality at automation particular requirement or other.But its derivative motors generally can both meet the product instructions for use.Special designs is compared with derivation, and its derivative motors is more suitable for the demand of modern society's industry undoubtedly, can save new-products development expense again.So far just lack standard derived asynchronous cage type hoisting motor in existing China common standard asynchronous cage type motor product.
Therefore the market demand of asynchronous lifting and metallurgical motor and in batches the property production common asynchronous cast-aluminum rotor motor that compares is few changes fast, environmental protection and energy saving in social demand and requires today high, that product is constantly upgraded renewal, product application specificization.Often former deisgn product conversion speed can be slower than common electric machine.The bridge motor that China produces is at present also using the high energy consumption hot rolling silicon steel sheet of eliminating.Its main cause also relates to design problem.The Electromagnetic Design of motor is very ripe simultaneously, change all can on original structure, derive from for different material requirements and finish design, but because technology popularity difference is different with understanding mode, the technology that obviously can merge classification is but broken up amplification, the equal otherwise designed exploitation of each side, the corresponding complexity that also just increases basicization industrial technology.Increase product design and production cost, influenced the development of new material, new technology, new product.
Same motor or other contain the bearing electronic product, because description type difference, some can change to some extent to have determined materials used, material coefficient of expansion difference can cause tolerance variation again, often cause being subjected in the electronic product middle (center) bearing material inflate compression easily, forming bearing does not have oily foam dry friction intensification and overheated damage.But motor rotation position tolerance is the decision motor key of non-failure operation time.But the tolerance fit standard of the world, domestic employing is thicker at present, and analytic application is thinless.Often cause the batch of product in the margin of tolerance of poor quality running time.At present when design motor shaft matching standard, can be with reference to " calculating of GB5371-xx Common Difference ﹠ Cooperation interference fit and select for use ", but during the tolerance of chosen axis bearing outer-ring and bearing chamber mating holes, can only select to wait with reference to " the GB1801-xx Common Difference ﹠ Cooperation size to the 500mm hole, axle tolerance range cooperate " that do not have account form, " GB/T275-xx rolling bearing with spool and the cooperating of shell ".About cooperating, comprise that 200620047860.1 up-to-date patents also can further deepen.
Summary of the invention:
The object of the present invention is to provide: a kind ofly meet asynchronous bridge motor standard, quality, can in time adapt to the market progress and change and require ， And can improve the motor standard derived asynchronous cage type hoisting motor of non-failure operation time effectively.
Technical scheme of the present invention is achieved in that a kind of standard derived asynchronous cage type hoisting motor, it is characterized in that:
Parts such as motor housing, rotor, except that have particular requirement, use common IEC standard asynchronous motor component and can exchanging substantially; Electromagnetic Design also can derive from the standardization design by the motor standard and the special-purpose bridge motor particular requirement of customer requirement all by standard design.
Electric motor end cap bearing chamber hole cooperates with bearing outer ring, according to different compounding ingredients under natural confined state, normal operating conditions, three kinds of different conditions of particular job state, because the gap variation amount that the coefficient of expansion produces is poor, selecting normal operating conditions is tolerance fit deviation calculation foundation, determines the design machining deviation with the selection mode that account form replaces in the past.All the time to guarantee that bearing is in the operation that has under the oily foam state.When expansion variation difference is big, installs O type circle additional and regulate.Therefore electric motor end cap bearing chamber tolerance fit data with calculate, principle analysis and again with reference to standard and refinement primary standards such as GB, use from being designed into to produce and be convenient to understand the identification term." matched in clearance " of original standard definition is refined as: have living space in the middle of the being exactly Chinese original meaning of notion of gap, introduce " play cooperation " notion in the bearing tolerance, be increased in " trip is full of and the is cooperated " notion that lacks in former matched in clearance and the interference fit.Reach and improve non-failure operation time, quality, to adapt to modern enterprise production and notion.
The rotor material of motor of the present invention is all eliminated the hot rolling silicon steel sheet of high energy consumption technology, preferably adopts the rolling silicon steel sheet of all kinds of high-performance energy saving techniques.
The invention has the advantages that: the present invention has found the irrationality and the defective of original design, has excellent, the characteristics in following two aspects after the improvement.
One, asynchronous cage type hoisting motor of the present invention is pressed the conventional derivation design of the common asynchronous cage type motor of IEC standard fully.Parts such as motor housing, rotor, except that have particular requirement, substantially can use common bifurcation, bifurcation 2, bifurcation 3 serial IEC standard asynchronous motor die production parts also can exchange, the electric machine rotor material is all eliminated the hot rolling silicon steel sheet of high energy consumption technology, can adopt the rolling silicon steel sheet of all kinds of high-performance energy saving techniques.On the one hand clear and definite the present invention can use all kinds of silicon steel sheet materials to reach by existing bridge motor performance standard to upgrade with the silicon steel sheet new energy saving product.Electromagnetic Design also can derive from the standardization design by the motor standard and the special-purpose bridge motor particular requirement of customer requirement all by standard design.Clear and definite on the other hand when improving the quality of products, the main parts size that is fit to use common IEC standard asynchronous motor derives from and manufactures and designs, and has both shortened the new product development cycle, can reach again and save the purpose that drops into.
Two, improve in the crucial tolerance fit of motor non-failure operation time, quality: electric motor end cap bearing chamber of the present invention hole cooperates with bearing outer ring, with different compounding ingredients under natural confined state, normal operating conditions, three kinds of different conditions of particular job state, because the gap variation amount that the coefficient of expansion produces is poor.Selecting normal operating conditions is tolerance fit deviation calculation foundation, determines the design machining deviation with the selection mode that account form replaces in the past.All the time to guarantee bearing, when expansion variation difference is big, installs O type circle additional and regulate in the operation that has under the oily foam state.Thereby being reached, product improves non-failure operation time, quality.To have electric motor end cap bearing chamber tolerance fit data now and reach again with reference to standard and refinement primary standards such as GB with calculating, principle analysis, Application Design is convenient to understand the identification term to producing.The matched in clearance definition of original standard is refined as the Chinese original meaning that the gap is exactly the middle notion of having living space, the zero category that contacts the genus gap with zero of definition cancellation primary standard in gap of the present invention; Contact to move about with zero and zero and be extended to the definition in gap, play cooperation noun is as notion in the application bearing tolerance; Be increased in and lack in former matched in clearance and the interference fit, contact with zero to move about from zero and be extended to interference and be defined as to swim and be full of the cooperation notion; In like manner there is not the notion of the magnitude of interference zero in interference fit.The refinement of tolerance fit invention is used and can be convenient to basic unit's processing identification effectively, reaches from being designed into production can both know with data, be defined as the manufacturing of standard, and this is the rudimentary knowledge that must know in the quality control.The present invention is with principle analysis and again with reference to the refinement of tolerance fit, also is fit to cooperating calculating and selecting for use of rolling bearing and shell in other electronic product simultaneously.Improve non-failure operation time, quality thereby numerous electronic product popularizations ground is reached, modern society enterprise produces and use to adapt to.
Description of drawings:
Fig. 1: be a kind of standard derived asynchronous cage type hoisting motor structure chart of the present invention.
Fig. 2: be a kind of standard derived asynchronous cage type hoisting motor magnetic chart of the present invention.
Fig. 3: be a kind of standard derived asynchronous cage type hoisting motor end cap of the present invention bearing chamber tolerance figure.
Fig. 4: for adding O shape circle or band gland figure between the present invention's a kind of standard derived asynchronous cage type hoisting motor end cap bearing chamber and bearing.
Embodiment:
Below in conjunction with 1 to 10 label and embodiment in the accompanying drawing 1 to Fig. 4 the present invention is described in further detail:
A kind of standard derived asynchronous cage type hoisting motor, it comprises: parts such as motor housing 5, rotor 1, front and rear cover 2, except that have particular requirement, the basic preferred common IEC standard asynchronous motor die production parts of use also can exchange, and form the derivation cage type hoisting motor of a standard.The all preferred hot rolling silicon steel sheet of eliminating high energy consumption technology of electric machine rotor 1 material can adopt the rolling silicon steel sheet of all kinds of high-performance energy saving techniques; Electromagnetism 4 designs also can be derived from the standardization design by the motor standard and the special-purpose bridge motor particular requirement of customer requirement all by standard design; It is as follows that electric motor end cap 2 bearing chambers 7 tolerances 8 cooperate data to reach the selection of normative reference refinement again establishment basis with calculating, principle analysis: the present invention's calculating is standard with the theoretical value, bearing 1 diameter is assumed to be zero, while, after the interference assembling, the moving play that must have must retainer shaft be forwarded in the rolling positions in the bearing 3 with axle 6.When bearing chamber 7 material coefficient of linear expansion were lower than bearing steel, the temperature rise value temperature was A when establishing motor bearings 3 operate as normal, and it is a that bearing 3 allows high-temperature resistant value, be temperature basic calculating data A, a, the bearing steel coefficient of expansion is b, and the bearing chamber 7 material coefficients of expansion are c, and bearing 3 diameters are d.Be design reference processing zero line X at first with motor bearings chamber 7 operate as normal temperature rise values and bearing 3 normal working temperature A
1, be again simultaneously that design analysis is selected tolerance 8 critical datas; It is that design reference is processed another zero line X that bearing 3 allows high-temperature resistant value a
2, with X
1Identical X
2Also be that design analysis is selected critical data; Reach motor bearings chamber 7 when the operate as normal temperature rise and under bearing 3 normal working temperatures, this bearing 3 still can be lower than oil-containing rotating operation under the compression stretching force situation of bearing 3 materials.Obtain tolerance 8 processing zero line diameter DX
1=dA (b-c), allowing high-temperature resistant working temperature a with bearing 3 then is another deviation processing zero line diameter tolerance 8 numerical value, uses basis DX
2=da (b-c) abandons the upper and lower amount of deflection in the former usage criteria, because the coefficient of expansion that temperature rise causes is poor, the gap variable quantity of formation is made as a limit deviation X during with these specification product bearing chamber 7 operate as normal
1X
1=DX
1-d; Coefficient of expansion difference was made as another limit deviation X when bearing 3 allowed high-temperature resistant work
2X
2＝DX
2-d。(DX-represent bearing 3 normal temperature diameters cooperate with this calculate temperature rise coefficient of expansion difference and) produce or select the gap than greatly the time when bearing chamber 7 Material Strength and the coefficient of expansion and bearing 3, then can add the adjusting O shape circle 9 that expands at bearing chamber 7 and 3 on bearing, also running in bearings outer ring gland 10 routinely, reach reduce be heated the after vibration noise with avoid the bearing outer ring rotation.
Press the motor of 180-6 support processing.Electric machine rotor 1 material compares with former equal-wattage after having the hot rolling silicon steel sheet to use cold rolling silicon steel sheet instead.Because cold rolling silicon steel sheet electromagnetism 4 inductions etc. are better than the hot rolling sheet, can save copper material 4.5%, save iron 6%, electromagnetic noise also is lower than the motor that the hot rolling sheet is made.
Former asynchronous cage type hoisting motor special designs is compared with now using the derivation design instead, the standardization design on request of same 180-6 support asynchronous cage type hoisting motor, standard derived asynchronous cage type hoisting motor, and the test result performance can reach the bridge motor standard fully.Now, except that rotor 1 cast aluminium composition changes, adopt moulds such as common asynchronous cage type motor housing 5, rotor 1, front and rear cover 3 basically, thereby shortened the construction cycle, saved a large amount of mould fund inputs owing to be by standard derived design.
" matched in clearance " used
When bearing chamber 7 materials are cast iron, because the coefficient of expansion is less than bearing 3 steel, finally after the mechanical rotation operation produces temperature rise, if under tolerance 8 standards that are engaged in bearing 3 outer rings and the bearing chamber 7 holes zero tolerance state, bearing chamber 7 will certainly compress bearing 3 outer rings, reduce bearing 3 inner play value of operation and due lubricating oil foam layers thereby cause, when the no play of bearing 3 operations, will cause dry friction aggravation temperature rise, thereby form oil starvation abrasion or the hard abrasion damage of compressibility.
Select 306 bearings 3 for use according to 112 support motors, bearing 3 outer ring Φ 72mm, can adopt H6, H7, J7, K7 or M7 according to 7 tolerances 8 cooperations commonly used of GB/T275-xx standard rolling bearing chamber, present Chinese Y2, Y3 motor use H6, H7 tolerance 8, press GB/T275-xx and select tolerance 8, select for use with reference to GB1801-xx simultaneously, should look into basic hole system by standard and cooperate.But tolerance 8 bands all are zero or negative Standard Selection basically under the basic hole system.Calculate motor bearings 3 and bearing chamber 7 earlier under the operate as normal temperature rise value, by the present invention because the gap variation amount difference that coefficient of expansion difference produces is processing zero line X
1, it is that design reference is processed another zero line X that bearing 3 allows the gap variation amount difference of high-temperature resistant value
2Get bearing 3 steel wire coefficient of expansion b=12 * 10
-6, ironcasting coefficient of linear expansion c=8.7 * 10
-6, A=50 ℃ of motor bearings 3 operate as normal temperature rise, bearing 3 allows a=80 ℃ of highest temperature appreciation.Because the bearing 3 steel coefficients of expansion are greater than ironcasting, then the cast iron bearing chamber 7, and D=Φ 72mm can produce X in the temperature rise scope of design
1=0.01188, X
2The different variable quantities in=0.019 gap.With lower deviation is that zero qualified product will be in use in former tolerance 8 standards if adopt in batch motor, because operation temperature rise bearing chamber 7 will compress bearing 3 outer rings, bearing 3 inner play value of operation and due lubricating oil foam layers have been reduced, when the no play of bearing 3 operations, will cause dry friction aggravation temperature rise, thereby form the hard abrasion damage of oil starvation abrasion or compressibility, it is poor to cause with batch products reliability running quality.Adopt X by the present invention
1Coefficient of expansion difference is to be made as the processing zero line, X in tolerance 8 lower deviations
2Be upper deviation processing zero line and adjustment as one sees fit, adopt " matched in clearance " of gapped value.Promptly
Be the initial calculation standard,, can adjust the upper deviation, but adding downward bias difference skew in man-hour by required precision if will consider machining accuracy.
More than because there is the certain clearance value in lower deviation, can remedy circularity, the circular runout deviation of some bearing chambers 7, reduce the assembling impulsive force.Simultaneously initial bearing 3 outer rings do not have the compressibility use, can improve rolled portion site surface compression set uniformities in the bearing 3, have remedied rotary part under particular condition, the gap reduction that the coefficient of expansion difference during owing to maximum temperaturerise causes.
Simultaneously for ensuring the quality of products, when the gap increases, this material type can be added rubber o-ring 9 at bearing chamber 7 and 3 on bearing, reach and reduce the excessive generation vibration noise of primary clearance and avoid the rotation of bearing 3 outer rings, shrink the characteristics that equilibrium gap reduces but can produce after fully application of rubber O type circle 9 is heated, it is poor to remedy the coefficient of expansion.Also running in bearings 3 outer ring gland 10 or compressing tablets routinely.
" play cooperation " uses
When bearing chamber 7 materials are stainless steel, system is greater than bearing 3 steel owing to expand, finally after the mechanical rotation operation produces temperature rise, if being engaged under the tolerance 8 standard clearance states of bearing 3 outer rings and bearing chamber 7 holes, bearing chamber 7 holes will certainly be greater than bearing 3 outer rings, cooperate value thereby increase bearing 3 outer rings with bearing chamber 7 interporal lacunas, easily cause rotation of bearing 3 outer rings and bearing chamber 7 hole abrasion expansions, form abrasion intensification, the damage of hole enlargement deformation.
Select 306 bearings 3 for use according to 112 support motors, bearing 3 outer ring Φ 72mm press optimal way and calculate motor bearings 3 and bearing chamber 7 earlier under the operate as normal temperature rise value, because the gap variation amount difference that coefficient of expansion difference produces is processing zero line X
1, get bearing 3 steel wire coefficient of expansion b=12 * 10
-6, stainless steel wire coefficient of expansion c=16.6 * 10
-6, A=50 ℃ of motor bearings 3 operate as normal temperature rise.Because the bearing 3 steel coefficients of expansion are less than stainless steel, then the stainless steel bearing chamber 7, and D=Φ 72mm can produce X in the temperature rise scope of design
1=0.01656 gap recruitment.This gap variation amount is not if analyze consideration in cooperation, will be in use near the qualified product of the upper deviation by former conventional tolerance 8 with in batch motor some, because will the gap increasing easily to draw, operation temperature rise bearing chamber 7 causes the rotation of bearing 3 outer rings, thereby cause bearing 3 outer rings and bearing chamber 7 to form dry friction aggravation temperature rise, cause bearing 3 and bearing chamber 7 hard grinds to decrease damage.It is poor to cause with batch motor reliability running quality.Adopting X coefficient of expansion difference to be made as the processing zero line and to take the circumstances into consideration in tolerance 8 by the present invention adjusts, be higher than bearing 3 outer rings according to stainless steel bearing chamber 7 overall strengths, elongation is higher than bearing 3 steel, for preventing bearing 3 outer ring compressions and the clearance for expansion that after the machine operation temperature rise, will produce, easily make fitted bearing 3 outer rings rotation in the bearing chamber 7.So employing is " the play cooperation " of standard with zero, use the lower deviation 0.00 of GB standard H6, H7 to be the processing zero line, but the numerical value of the upper deviation is contradiction by operation under the assurance temperature rising state.Therefore for avoiding temperature rise to produce excesssive gap, while equalizer bearing chamber 7 circularity, run-out tolerance, it is 0.013 that the compression upper deviation is got H5, contacts to move about with zero and zero to be extended to the definition in gap, " play cooperation " noun is as notion in application bearing 3 tolerances 8, and promptly bearing chamber 7 is
Be the initial calculation standard,, then can adjust the upper deviation, but adding downward bias difference skew in man-hour according to required precision if will consider machining accuracy.
" play cooperation " and " matched in clearance " application choice
For ensuring the quality of products, this material type can be added thermal expansion O shape circle 9 at bearing chamber 7 and 3 on bearing, reach to reduce and be heated the after vibration noise and avoid the rotation of bearing 3 outer rings, tolerance 8 can be calculated according to O type circle 9 coefficients of expansion and intensity and select " play cooperates " or " matched in clearance ", also running in bearings 3 outer ring gland 10 or compressing tablets routinely.
" trip be full of cooperation " application choice
By embodiment 3 calculating then be
Form " interference fit " that the magnitude of interference is arranged at normal temperatures, form bearing 3 outer rings, just easily produce compressibility distortion with bearing chamber 7 processing circularity, beating property at initial confined state.Be to reduce compress variation, consider that the factor of bearing chamber 7 processing circularity, the sexual deviation of beating can reduce the magnitude of interference, change lower deviation into the upper deviation 0.01656,0 to be the upper deviation, promptly bearing chamber 7
Formation from zero with zero contact to move about be extended to " trip be full of cooperation " of interference.Because the same reality that has compression in assembling, when selecting fitted bearing 3, decrement must be added in the bearing 3 play values, should select to cooperate than the big standard of embodiment 3 bearings, 3 play, can make bearing 3 outer rings still gapped after by compression, guarantee that bearing 3 all the time can be in the failure-free operation that has under the oily foam state.
" trip be full of cooperation " application choice
When bearing chamber 7 materials are aluminium, owing to expand system greater than bearing 3 steel finally after the mechanical rotation operation produces temperature rise, if being engaged under the tolerance 8 standard clearance states of bearing 3 outer rings and bearing chamber 7 holes, bearing chamber 7 holes will certainly be greater than bearing 3 outer rings, add general alloy aluminum hardness again and be lower than bearing 3, cooperate value thereby increase bearing 3 outer rings with bearing chamber 7 interporal lacunas, cause that easily rotation of bearing 3 outer rings and bearing chamber 7 hole abrasivenesses enlarge, and form abrasiveness intensification, the damage of hole enlargement deformation.
Select 306 bearings 3 for use according to 112 support motors, bearing 3 outer ring Φ 72mm press optimal way and calculate motor bearings 3 and bearing chamber 7 earlier under the operate as normal temperature rise value, because the gap variation amount difference that coefficient of expansion difference produces is processing zero line X
1, get bearing 3 steel wire coefficient of expansion b=12 * 10
-6, alloy aluminum coefficient of linear expansion c=20 * 10
-6, A=50 ℃ of motor bearings chamber 7 operate as normal temperature rise values and bearing 3 operate as normal temperature rise.Because the bearing 3 steel coefficients of expansion are less than alloy aluminum, then alloy aluminum bearing chamber 7D=Φ 72mm meeting generation X=0.0288 in the temperature rise scope of design is poor greater than the coefficient of expansion of bearing 3.This coefficient is not if analyze consideration in cooperation, qualified product with some employing upper deviation in batch motor will be in use, because will the gap increasing easily to draw, operation temperature rise bearing chamber 7 causes the rotation of bearing 3 outer rings, thereby cause bearing 3 outer rings and bearing chamber 7 to cause dry friction aggravation temperature rise, form the hard grind damage, it is poor to cause with batch reliability running quality.The gap variation amount difference that adopts X coefficient of expansion difference to produce by the present invention is made as a processing zero line and takes the circumstances into consideration adjustment, another tolerance 8 deviation lines according to alloy aluminum bearing chamber 7 often intensity be lower than bearing 3 outer rings, elongation is higher than bearing 3 steel, and interference fit is difficult for making the compression of bearing 3 outer rings.When bearing chamber 7 intensity were lower than bearing 3 outer rings, compression resilience was poor simultaneously, can adopt interference fit.But it is excessive that the magnitude of interference should not be got, and is taken at the gap variation amount that produces after the motor bearings 3 operate as normal temperature rises and gets final product for the maximum interference amount, adopt with zero be standard by zero " trip be full of cooperation " to interference.Using tolerance 8 upper deviations 0.00 is a processing zero line, but the numerical value of lower deviation is by guaranteeing to move the springback capacity that heats up again after the material compression under the temperature rising state.Be that bearing chamber 7 is
" play cooperation " application choice
If take " play cooperation " bearing chamber 7 to be
Must reach to reduce and be heated the after vibration noise and avoid the rotation of bearing 3 outer rings at bearing chamber 7 and 3 interpolations of bearing thermal expansion O shape circle 9 for ensuring the quality of products, tolerance 8 can be selected according to O type circle 9 coefficients of expansion and intensity calculating.Also running in bearings 3 outer ring gland 10 or compressing tablets routinely.According to demand also can be in bearing chamber 7 embedment strengths, the higher material of hardness, according to material calculated tolerances 8 separately.
Embodiment 6
" play cooperation " uses
When the bearing chamber 7 material coefficients of expansion during near bearing 3, because the coefficient of expansion is near bearing 3 steel, when so this tolerance 8 is selected with assembling, mainly avoid and interference to assemble, in order to avoid the interference assembling causes bearing chamber 7 compression bearings 3 outer rings, will form dry friction aggravation temperature rise when forming the no play of bearing 3 operations, thereby form oil starvation or the compressibility hard grind is damaged.For guaranteeing that bearing 3 moves inner play values and due lubricating oil foam layer can be taked " play cooperation ", require general product can adopt " matched in clearance " to tolerance 8.
Select 306 bearings 3 for use according to 112 support motors, bearing 3 outer ring Φ 72mm, can adopt H6, H7, J7, K7 or M7 according to 7 tolerances 8 cooperations commonly used of GB/T275-xx standard rolling bearing chamber, present Chinese Y2, Y3 motor use H6, H7 tolerance 8, press GB/T275-xx and select tolerance 8, select for use with reference to GB1801-xx simultaneously, should look into basic hole system by standard and cooperate.But the basic hole system lower deviation is that zero Standard Selection is main.This coefficient of bearing chamber 7D=Φ 72mm is not if analyze consideration in cooperation, bearing chamber 7 will compress bearing 3 outer rings, thereby reduce bearing 3 inner play value of operation and due lubricating oil foam layers, when the no play of bearing 3 operations, will cause dry friction aggravation temperature rise, thereby form oil starvation wearing and tearing or compressibility hard grind damage, it is poor to cause with batch motor reliability running quality.The gap variation amount difference that adopts X coefficient of expansion difference to produce by the present invention is made as a processing zero line and takes the circumstances into consideration adjustment, and another tolerance 8 deviation lines can be accumulated as the upper deviation according to circularity, the deviation of beating in bearing chamber 7 processing.Because the coefficient of expansion is approaching, the no coefficient of expansion is poor, but will avoid bearing chamber 7 compression bearings 3 outer rings, thus lower deviation adopt in the indignant thought of the present invention's " play cooperations " with zero be tolerance 8 values of zero line, upper deviation add up error selection 0.013.The tolerance 8 if matched in clearance of the gapped value of employing, then desirable 0.01 workpiece of lower deviation add up, the upper deviation is 0.019 by GB standard H6.Be that play fitted bearing chamber 7 deviations are
Matched in clearance bearing chamber 7 deviations are
Illustrated that according to above analysis the upper and lower deviation of work in-process mainly can be up or the foundation of skew down.Be the initial calculation standard,, then can adjust the upper deviation, adding downward bias difference skew in man-hour if will consider machining accuracy.
In sum:
According to above embodiment analyzed the present invention a kind of meet asynchronous bridge motor standard, quality, and can shorten the construction cycle, economical with materials and fund input And can in time adapt to the market progress and change requirement, can improve the motor standard derived asynchronous cage type hoisting motor of non-failure operation time effectively.Particularly in the cooperating of electric motor end cap 2 bearing chambers 7 holes and bearing 3 outer rings, used different compounding ingredients under natural confined state, normal operating conditions, three kinds of varying environment states of particular job state, because the gap variation amount that the coefficient of expansion produces is poor.The preferred normal operating conditions of selecting is that tolerance 8 cooperates the deviation calculation foundation, determines the design machining deviation with the selection mode that account form replaces in the past.When expansion variation difference is big, install O type circle 9 additional and regulate, guarantee preferably that all the time bearing 3 is having the characteristics of moving under the oily foam state.Product is reached improve non-failure operation time, quality, modern society enterprise produces and use to adapt to.
Claims (4)
1. standard derived asynchronous cage type hoisting motor is characterized in that: motor housing (5), rotor parts such as (1), except that have particular requirement, use common IEC standard asynchronous motor component substantially and can exchange; Electromagnetism (4) design also can be by the motor standard and the design of special-purpose bridge motor particular requirement standardization of customer requirement all by standard design; Electric motor end cap (2) bearing chamber (7) hole cooperates with bearing (3), and under natural assembling, operate as normal, three kinds of different conditions of particular job, preferably selecting normal operating conditions is that tolerance (8) cooperates the deviation foundation according to different materials; When expansion variation difference is big, installs O type circle (9) additional and regulate, all the time to guarantee that bearing (3) is in the operation that has under the oily foam state.
2. according to right 1 described motor, it is characterized in that motor housing (5), rotor (1) main parts size are common bifurcation, bifurcation 2, bifurcation 3 serial IEC standard asynchronous motor parts.
3. according to right 1 described motor, the tolerance fit that it is characterized in that electric motor end cap (2) bearing chamber (7) hole and bearing (3), be poor, determine bearing chamber (7) tolerance (8) zero line deviation with the choice criteria mode that account form replaces in the past according to the gap variation amount of material coefficient of expansion generation.
4. according to right 1 described motor, it is characterized in that the rolling silicon steel sheet of all kinds of high-performance energy saving techniques of electric machine rotor (1) material selection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910046404A CN101814785A (en) | 2009-02-20 | 2009-02-20 | Standard derived asynchronous cage type hoisting motor |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910046404A CN101814785A (en) | 2009-02-20 | 2009-02-20 | Standard derived asynchronous cage type hoisting motor |
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| Publication Number | Publication Date |
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| CN101814785A true CN101814785A (en) | 2010-08-25 |
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ID=42621933
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111788759A (en) * | 2018-03-01 | 2020-10-16 | 蒂森克虏伯股份公司 | Rotor, asynchronous machine and use of a pressure plate |
-
2009
- 2009-02-20 CN CN200910046404A patent/CN101814785A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111788759A (en) * | 2018-03-01 | 2020-10-16 | 蒂森克虏伯股份公司 | Rotor, asynchronous machine and use of a pressure plate |
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Open date: 20100825 |