CN1274480A - Process and device for mounting rotor of electric motor - Google Patents
Process and device for mounting rotor of electric motor Download PDFInfo
- Publication number
- CN1274480A CN1274480A CN 99801196 CN99801196A CN1274480A CN 1274480 A CN1274480 A CN 1274480A CN 99801196 CN99801196 CN 99801196 CN 99801196 A CN99801196 A CN 99801196A CN 1274480 A CN1274480 A CN 1274480A
- Authority
- CN
- China
- Prior art keywords
- bent axle
- outer cover
- rotor
- stator
- motor outer
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K15/00—Methods or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines
- H02K15/16—Centering rotors within the stator; Balancing rotors
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- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Power Engineering (AREA)
- Compressor (AREA)
- Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)
- Manufacture Of Motors, Generators (AREA)
Abstract
A process and device for mounting the rotor of an electric motor, comprising a stator affixed inside a motor housing, and a rotor affixed to a crankshaft journalled to a supporting block, said assembly being achieved by a control unit commanding the radial displacements of an upper end of the crankshaft having a lower end journalled to a lower bearing mounted to the motor housing, each radial displacement being limited by a respective contact condition of the rotor to a respective and adjacent portion of the stator, which condition is identified and registered, in order to allow the calculation of the center of the circumference which contains the contact conditions and the posterior displacement of the upper end of the crankshaft..
Description
The present invention relates to be used for axle-rotor assembly with motor and be installed to method and apparatus on the corresponding stator in the shell that is installed in the refrigeration system hermetic compressor.
In the well-known structures that reciprocating hermetic compressor in the enclosure is installed, be provided with a rest pad, its journal rest a bent axle, this bent axle moves back and forth a piston by connecting rod in the cylinder body that is arranged at aforementioned rest pad end, described bent axle is carrying the rotor of motor in the mode that does not have end play.
Described motor has a stator, it is installed in the inboard of motor outer cover tightly, described motor outer cover is cup-shaped form usually, the rotor that bent axle carried coaxially is positioned at the inboard of motor, certain spaced radial is arranged between rotor and the stator, and calculating this spaced radial is in order to avoid the contact between the above-mentioned parts in the operation process of motor.Described motor outer cover is installed in the inboard of compressor case and fixes rest pad.
In this structure, the lower end of bent axle is installed on lower bearing, and this bearing is to be arranged on the part of diapire of motor outer cover with the mutually coaxial mode of the axis of bent axle.
According to this structure, under the situation in stator has been fixed in the motor outer cover rotor is assembled on the stator, thereby be difficult to relative stator rotor is carried out position modulation.In this assembly, rotor has been fixed in the bent axle that is placed on the axial upper bearing.
In order to stop rotor that contact point with stator is provided in the operation process of compressor, one of solution is to produce rotor and the stator with high dimensional accuracy and produce the accurate assembly that is made of described parts, described precision is defined as to guarantee that the respective axis of two parts aligns, to avoid in the compressor operation process contact between the two.Another solution is to make the radial clearance that increase is arranged between rotor and the stator, and this can obtain by at least one that reduces in a large number in the above-mentioned parts subsequently, and therefore, described gap can compensate not lining up property final and common between rotor and the axis stator.But, increase air gap in this scheme meeting efficiency of motor exerted an influence.
The purpose of this invention is to provide and be used for rotor is installed to method and apparatus on the stator that makes the reciprocating motor of hermetic compressor, thereby can be when the rotor of motor or stator to be removed equipment, the axis that just can realize described parts of the radial clearance that need not to make related parts that high production dimensional accuracy or increase be arranged is the assembly manipulation of alignment accurately.
Can realize above-mentioned and other purpose with the method that rotor is installed, described motor comprises: a stator, and this stator is fixed on the inboard of motor outer cover, and described motor outer cover has a diapire, and it is equipped with a self-centering lower bearing; And, one rotor, it is fixed on around the bent axle, the lower end journal rest of this bent axle is in lower bearing, the top journal rest is in a rest pad, this rest pad can be connected in the upper end of the opening of motor outer cover, and described method comprises that such step: a-clamps the motor outer cover of fixed rotor on ad-hoc location; B-inserts rest pad-bent axle-rotor assembly via the open upper end of motor outer cover, is placed on the lower bearing until the lower end with bent axle; C-makes the upper end radial displacement of bent axle, and each displacement all is subject to the corresponding contact state of the corresponding and adjacent part of rotor and stator; D-confirms and writes down various contact conditions between rotor and the stator; E-calculates the center of the circumference that includes described contact condition according to the affirmation of being done; F-makes bent axle do radial displacement, aligns until the geometric center of its geometric center with the circumference that calculates; And g-is fixed to rest pad on the motor outer cover.
The equipment of realizing the inventive method comprises: an installation station, and it is equipped with the motor outer cover of fixing stator; At least one transfer device, it links to each other with installation station in the mode that can turn round, so that radial displacement is done in bent axle upper end, each displacement all is subject to the corresponding corresponding contact state with adjacent part with stator of rotor; One control device, it links to each other with installation station in the mode that can turn round so that receive the information relevant with wherein being placed with the motor outer cover and link to each other with transfer device so that various radial displacements are done in the upper end of bent axle in the mode that can turn round from this installation station; And, sensor device, these are arranged at least one of parts that transfer device and installation station limit and in the mode that can turn round and link to each other with control device, so that the various contact conditions that have the motor outer cover in the installation station, bent axle is injected aforementioned motor outer cover and rotor and stator are notified to control device, described control device can be determined the geometric center of stator and instruct transfer device to make the bent axle displacement, align until the axis of bent axle and the geometric center of stator according to the information relevant with the contact condition of sensor device notice.
Following with reference to description of drawings the present invention, in the accompanying drawings:
Fig. 1 is shown schematically in the hermetic compressor with the such type of rotor-stator module that is installed in the motor outer cover in the mode of sectional side elevation;
Fig. 2 is shown schematically in journal rest in the mode of decomposition diagram and the rest pad of bent axle and will be installed to rotor in the motor outer cover of fixing stator;
The journal rest that Fig. 3 is shown schematically in Fig. 2 in the mode of perspective view the rest pad of bent axle and is installed in rotor in the motor outer cover of fixing stator;
Fig. 4 shows the fitting operation that the journal rest of Fig. 2 of the present invention and 3 rest pad of bent axle and is installed in the rotor in the motor outer cover of fixing stator with the form of block diagram;
Below the present invention is described with regard to the method that motor is installed, described motor for example is all the sort of as shown in Figure 1 motors with the sort of type of using in the hermetic compressor of vertical crankshaft, described compressor comprises: a can 1, it defines the grease-box 2 of its bottom and rest pad 10 is included in wherein, described rest pad has a cylinder body 20 and is having an axial upper bearing 12 with the mutually coaxial middle part of through hole 11 at end bearing, it is used for supporting crankshaft 30, this bent axle is vertical and has eccentric 31, this eccentric is articulated in piston 45 by connecting rod 40, and piston 45 can the reciprocating motion in cylinder body 20 with the rotation of bent axle 30.
The top of bent axle 30 is provided with a lip portions 32, and it is arranged on the bearing 12 of rest pad 10, and the bottom of bent axle 30 is provided with an oil pump 33, and it can be drawn to oil the parts that relatively move and need to lubricate from take out case 2.Bent axle 30 is also carrying the rotor 50 of compressor electric motor between lip portions 32 and oil pump 33, this rotor is fixed in bent axle 30 in the mode of no radial clearance.
In this structure, rest pad 10 is the form of skewed slot, and it has sidewall 13 and diapire 14, is equipped with recess 15 on this diapire, and recess 15 is mutually coaxial with through hole 11, and axially upper bearing 12 is arranged in the recess 15.
Axially upper bearing 12 ringwise, it has definite sphere, this just can make this bearing align automatically in the motion process of bent axle 30.
According to this structure, rest pad 10 is fixed in the motor outer cover 60 that is cylindricality cup-shaped spare usually, rest pad 10 is positioned at such position on the top edge 61 of motor outer cover, in this position, the axis of the axis of bent axle 30 and motor stator 70 aligns, thereby avoids contacting between rotor 50 and the stator 70 in motor operation course.
The diapire 61 of motor outer cover 60 is provided with a central part 63, and it is inwardly outstanding and have through hole 64 coaxial with the axis of motor outer cover 60 and that align, passes through in the place that is equipped with oil pump 33 with the lower end that allows bent axle 30.Central part 63 defines an outer cover that is used for lower bearing 80 in the outside of motor outer cover 60, lower bearing 80 is self-centering and has and the axial similar structure of upper bearing 12 and be fixed in the diapire 61 of motor outer cover 60, so that the axis of its axis and diapire 62 aligns.In this structure, stator 70 before receiving rotor-crankshaft group with relative motor outer cover 60 externally and coaxial mode be not installed on this motor outer cover 60 with having radial clearance.
When motor is installed, after stator 70 being fixed to motor outer cover 60 in and lower bearing 80 is fixed in motor outer cover 60,, be placed on the lower bearing 80 until the lower end of bent axle 30 with carrying in the bent axle 30 reeve motor outer covers 60 of rotor 50.
In this compressor arrangement, be positioned to pass the through hole 11 that is arranged in the rest pad 10 when being installed in bent axle 30 beginnings in the motor outer cover 60, thereby this rest pad-bent axle-rotor assembly can be installed on the stator that has been fixed in the motor outer cover 60.
According to the present invention, available have the installation method of above step that rotor accurately is assembled on the stator.
According to the present invention, each bent axle 30 that available a kind of like this equipment will carry rotor 50 is assembled on the stator 70, described equipment comprises an installation station 100, this installation station receives and clamps motor outer cover 60, and, in described installation station, each rotor 70 of first transfer device, 110 guiding is inserted into and is clamped under the instruction of control device 120 in the motor outer cover 60, and described control device 120 links to each other with first transfer device 110 and links to each other with installation station 100 in the mode that can turn round.After this assembly manipulation, second transfer device 130 that links to each other with installation station 100 in the mode that can turn round can guide to installation station 100 with the rest pad 10 that is carrying bent axle 30-rotor 50 assemblies.
After journal rest is lived the lower end of bent axle 30, control device 120 also instructs second transfer device 130 to make the upper end of bent axle 30 do radial displacement, each displacement all is subject to the contacting of corresponding and adjacent part of rotor and stator 70, and this contact condition for example depends on the pressure sensor of sensor device.After each time contact, control device 120 can be write down position contacting and instruct second transfer device 130 to impel the upper end of bent axle 30 to do radial displacement subsequently, therefore, can obtain and write down new contact condition, thereby produces at least three kinds of different contact conditions.
By determining said contact condition, control device can be determined the geometric center of stator and can determine to instruct motion to second transfer device 130 on mathematics, therefore, second transfer device 130 can make the geometric center of bent axle 30 be positioned to and severally aligning to the center of being limited for stator 30.
The axis of bent axle 30 and the axis of rotor 50 are aligned, therefore, radial clearance between these two parts approaches the minimum clearance of being scheduled to basically and remains unchanged along circumference, thereby has avoided these parts that undesirable contact is arranged in the compressor operation process.
When making bent axle 30 relative stator 50 location placed in the middle, available such as welding or bonding suitable means rest pad 10 is fixed on the top edge 61 of motor outer cover, thereby the aligned condition that is obtained is remained unchanged.
Claims (6)
1, a kind of method that is used to install rotor, described motor comprises: a stator (70), this stator is fixed on the inboard of motor outer cover (60), and described motor outer cover has a diapire (62), and it is equipped with the lower bearing (80) of a self centering; And, one rotor (50), it is fixed on bent axle (30) on every side, the lower end journal rest of this bent axle is in lower bearing (80), the upper end journal rest is in a rest pad (10), this rest pad can be connected in the upper end of the opening of motor outer cover (60), and described method is characterised in that it comprises that such step: a-clamps the motor outer cover (60) of fixed rotor (70) on ad-hoc location; B-inserts rest pad (10)-bent axle (30)-rotor (50) assembly via the open upper end of motor outer cover (60), is placed on the lower bearing (80) until the lower end with bent axle (30); C-makes the upper end radial displacement of bent axle (30), and each displacement all is subject to the corresponding contact state of the corresponding and adjacent part of rotor (50) and stator (70); D-confirms and writes down various contact conditions between rotor (50) and the stator (70); E-calculates the center of the circumference that includes described contact condition according to the affirmation of being done; F-makes bent axle (30) do radial displacement, aligns until the geometric center of its geometric center with the circumference that calculates; And g-is fixed to rest pad (10) on the motor outer cover (60).
As the method for claim, it is characterized in that 2, in step " c ", the upper end of bent axle (30) is at least three kinds of contact conditions, these contact conditions are different and independently of one another in angled mode.
3, be used to install the equipment of rotor, described motor comprises: a stator (70), and this stator is fixed on the inboard of motor outer cover (60), and described motor outer cover has a diapire (62), and it is equipped with the lower bearing (80) of a self centering; And, one rotor (50), it is fixed on bent axle (30) on every side, the lower end journal rest of this bent axle is in lower bearing (80), the top journal rest is in a rest pad (10), and this rest pad can be connected in the open upper end of motor outer cover (60), and described equipment is characterised in that, it comprises: an installation station (100), and it is equipped with the motor outer cover (60) of fixing stator (70); At least one transfer device (130), it links to each other with installation station (100) in the mode that can turn round, so that radial displacement is done in bent axle (30) upper end, each displacement all is subject to the corresponding corresponding contact state with adjacent part with stator (70) of rotor (50); One control device (120), it links to each other with installation station (100) in the mode that can turn round, so that receive and wherein be placed with the relevant information of motor outer cover (60) from this installation station, and link to each other with transfer device (13) in the mode that can turn round, so that various radial displacements are done in the upper end of bent axle (30); And, sensor device, they are arranged at least one of parts that transfer device (130) and installation station (100) limit, and link to each other with control device (120) in the mode that can turn round, so that will have motor outer cover (60) in the installation station (100), the various contact conditions that bent axle (30) injected aforementioned motor outer cover (60) and rotor (50) and stator (70) are notified to control device, described control device (120) can be determined the geometric center of stator (70) according to the relevant information of the contact condition of notifying with sensor device, and instruct transfer device (130) to make bent axle (30) displacement, align until the axis of bent axle (30) and the geometric center of stator (70).
4, equipment as claimed in claim 3, it is characterized in that, this equipment comprises first and second transfer devices (110,130), the mode that it can turn round links to each other with installation station (100) and control device (120), and described first transfer device (110) guides to installation station (100) with motor outer cover (60).
5, equipment as claimed in claim 4, it is characterized in that, this equipment comprises sensor device, sensor device is arranged on second transfer device (130), and link to each other with control device (120) in the mode that can turn round, so that the various contact conditions between rotor (50) and the stator (70) are notified to control device (120).
6, equipment as claimed in claim 5 is characterized in that, described sensor device is a pressure sensor.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| BRPI98027565 | 1998-07-23 | ||
| BR9802756A BR9802756A (en) | 1998-07-23 | 1998-07-23 | Electric motor rotor assembly process and device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1274480A true CN1274480A (en) | 2000-11-22 |
Family
ID=4070107
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 99801196 Pending CN1274480A (en) | 1998-07-23 | 1999-07-21 | Process and device for mounting rotor of electric motor |
Country Status (5)
| Country | Link |
|---|---|
| EP (1) | EP1018205A1 (en) |
| CN (1) | CN1274480A (en) |
| BR (1) | BR9802756A (en) |
| SK (1) | SK3982000A3 (en) |
| WO (1) | WO2000005802A1 (en) |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3250348B2 (en) * | 1992-11-24 | 2002-01-28 | ダイキン工業株式会社 | Motor assembly method and device |
| US5513539A (en) * | 1994-06-30 | 1996-05-07 | Transalta Utilities Corporation | Apparatus and method for determining the best position for inner and outer members in a rotary machine |
-
1998
- 1998-07-23 BR BR9802756A patent/BR9802756A/en not_active IP Right Cessation
-
1999
- 1999-07-21 EP EP99934418A patent/EP1018205A1/en not_active Withdrawn
- 1999-07-21 CN CN 99801196 patent/CN1274480A/en active Pending
- 1999-07-21 WO PCT/BR1999/000059 patent/WO2000005802A1/en not_active Application Discontinuation
- 1999-07-21 SK SK398-2000A patent/SK3982000A3/en unknown
Also Published As
| Publication number | Publication date |
|---|---|
| EP1018205A1 (en) | 2000-07-12 |
| SK3982000A3 (en) | 2001-05-10 |
| WO2000005802A1 (en) | 2000-02-03 |
| BR9802756A (en) | 2000-04-04 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |