CN102097896A - Method and assembling device for assembling and disassembling stator and rotor of permanent magnet synchronous motor - Google Patents
Method and assembling device for assembling and disassembling stator and rotor of permanent magnet synchronous motor Download PDFInfo
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Abstract
The invention provides a method and assembling device for assembling and disassembling a stator and a rotor of a permanent magnet synchronous motor. The method is characterized by adopting a rocker arm vertical permanent magnet synchronous motor stator and rotor assembling and disassembling method to fix a rotor on a rocker arm by a floating positioning seat, with the excircle and end face at the shaft extension end or the excircle and end face at the extension end of the rotor as the positioning surfaces, plugging a tapered positioning pin after the floating positioning seat is fixedly positioned, ensuring the axis of the rotor to be vertical to the horizontal plane and on the same straight line with the center line of a stator and arranging a pilot rod at the front end of the rotor; fixing the stator on a stator positioning disc by a bolt, with a bearing chamber at the end where the end cover is assembled and the end face of the bearing chamber as the positioning surfaces; installing the stator positioning disc on which the stator is installed in the center of a stator fixing station and ensuring the central axis of the stator to be vertical to the horizontal plane and coaxial with the floating positioning seat of the rotor; installing the rocker arm on a column, driving the rocker arm to move up and down via a screw drive mechanism and driving the rotor installed on the rocker arm to move up and down together when the rocker arm moves up and down to realize assembly and disassembly of the stator and the rotor of the permanent magnet synchronous motor.
Description
Technical field
The present invention relates to a kind of assembling mode and device of motor component, relate to specifically and a kind ofly overcome the magnetic field of permanent magnet attraction than vertical the attaching together of high power permanent magnet synchronous motor rotor, guarantee that rotor attaches together the assembling mode and the device of speed and position-controllable, particularly more powerful permanent-magnetic synchronous motor stator rotor vertically, horizontal closes more than the 30KW, attraction is artificial when uncontrollable during dismounting.
Background technology
Along with the development AC asynchronous motor of electric machines control technology has simple in structurely with it, reliable operation, the life-span is long, cost is low, and the easy characteristics of maintenance are used also very extensive.But, to compare with DC motor, its speed adjusting performance is poor, and starting torque is little, and overload capacity and efficient are low.The generation of its rotating magnetic field needs to draw reactive power from electrical network, so power factor (PF) is low, during underloading more so, this big loss that has increased circuit and electrical network.For a long time, people's research substitutes electric excitatory magnetic pole with permanent magnet, with integrated circuit and computer technology permanent magnet synchronous motor is controlled, and permanent magnetic material and integrated circuit and development of computer have greatly promoted the Application and Development of permanent magnet synchronous motor.Permanent magnet synchronous motor and direct current machine and asynchronous machine relatively have the characteristics that mechanical performance is hard, overload capacity is big, controllability is good, stationarity is good, noise is little, electromagnetic interference is little, the life-span is long, volume is little, efficient is high, cost is higher.
Because the development of electronic technology and control technology, the control technology of permanent magnet synchronous motor is also ripe and be gradually improved, permanent magnet synchronous motor is from small to large, from general controlling and driving to high-precision servo-drive, occur as topmost drive motors to various high-grade, precision and advanced sciemtifec and technical spheres from people's daily life, and use more and more widely, the manufacturing technology of permagnetic synchronous motor will more and more be subjected to people's attention.
The structural shape critical piece of permagnetic synchronous motor mainly contains stator rotor and the end cap bearing is formed, and stator is made up of unshakable in one's determination and stator coil, and stator core has good magnetic property.Rotor mainly is made up of rotor core and permanent magnet, is equipped with permanent magnet in the rotor core groove, because the effect of permanent magnet, there is the magnetic field of certain intensity in the space of rotor cylindrical and periphery, and magnetic conductor and rotor will produce bigger attraction when close.Therefore the rotor of permagnetic synchronous motor closes, also deposits bigger attraction between rotor during dismounting, because the existence of attraction, if not having special-purpose device to control this attraction, will to cause the permagnetic synchronous motor demolition, installation to join process may be that speed of related movement causes certain impact very soon between rotor, or the rotor center not the compound tense rotor attract each other and can not separate together, operate dangerous, production efficiency and product quality also are difficult to guarantee simultaneously, and this problem was more outstanding when particularly the above permagnetic synchronous motor of 30KW was assembled.
The permagnetic synchronous motor rotor form of attaching together can be divided into vertical assembling and horizontal assembling.
During the vertical dismounting of permagnetic synchronous motor rotor, electrical axis is perpendicular to ground, the force direction in magnetic field is consistent with the direction of motion that the direction of motion and rotor attach together between rotor, but it is opposite with disassembly direction, if the rotor dead in line point-blank when attaching together, need not to add in addition external force just can attach together rotor under the effect of gravity and suction automatically to being hindered, but acceleration of motion can be greater than acceleration of gravity, being obstructed can produce very big impact shock when stopping, and dangerously can not guarantee that motor when assembling bearing quality is not impaired.The permagnetic synchronous motor rotor is vertical to be closed, during dismounting, can have the control problem that attaches together movement velocity and direction of relative movement, thus do not have now big-and-middle-sized permagnetic synchronous motor rotor vertical tear open to attach together put.
At present, the fluid pressure type horizontal machine rotor apparatus for assembling that adopt were finished more when non-permanent-magnet high power electric rotating machine was assembled, the characteristics of this structure are that the relative motion transmission that rotor closes disassembly process realizes with the rectilinear motion of the movable lug bar of hydraulic cylinder, the size of its power is put to death the pressure (having no attraction between rotor) that offers hydraulic cylinder in Hydraulic Station, and the size of its pressure has determined that the power of the speed of movement velocity of movable lug bar of hydraulic cylinder and rotor is irrelevant.Close dismounting if this device is used for the rotor of magneto, for varying in size of its attraction of permagnetic synchronous motor of different model different capacity, if it is constant to guarantee that rotor closes the speed of related movement of dismounting, the pressure of this Hydraulic Station needs to change with the variation of rotor relative position, the structure of the pressure regulation device more complicated that will become.Because the existence of hydraulic system, complex structure relatively takes up an area of greatlyyer, and cost is higher.And the permagnetic synchronous motor rotor is horizontal when attaching together, the electric machine rotor axis in the horizontal direction, the active force in magnetic field is vertical with the rotor gravity direction between rotor, making a concerted effort of two power from the horizontal by a angle less than 90 degree, so rotor can deflect to rotor cylindrical contact then in this effect lower axis of making a concerted effort.If can guarantee the rotor center during horizontal assembling overlaps, then rotor can be under the power effect of magnetic field of permanent magnet adhesive automatically, in the extremely short time, reach the alignment of stator and rotor cores length direction, how to guarantee that rotor dead in line and rotor relative motion are controlled, need special-purpose device to guarantee.
Summary of the invention
Purpose of the present invention, rotor at existing permagnetic synchronous motor closes exactly, attraction will cause the permagnetic synchronous motor demolition, installation to join that process rotor speed of related movement is uncontrollable, the workman operates dangerous during dismounting, simultaneously production efficiency and product quality also are difficult to the problem that guarantees, the rotor that proposes a kind of permagnetic synchronous motor closes, controlled, the workman's handling safety of process rotor speed of related movement is joined in the permagnetic synchronous motor demolition, installation during dismounting, simultaneously production efficiency and the product quality permagnetic synchronous motor rotor that can guarantee close, dismounting mode and apparatus for assembling.
The technical solution adopted for the present invention to solve the technical problems is: a kind of permagnetic synchronous motor rotor closes the dismounting mode, adopt the vertical permagnetic synchronous motor rotor of rocker-arm to close the dismounting mode, is locating surface with rotor with the cylindrical and the end face of shaft extension end cylindrical and end face or its extended end, be fixed on the rocking arm by a unsteady positioning seat, plug conical dowel pin after the positioning seat stationary positioned of floating, and guaranteed that rotor axis is vertical with horizontal plane, and with the center line of workbench on same straight line, front end at rotor also is provided with the correcting bar, on the correcting bar bearing is housed; Again with bearing chamber and the end face location thereof of stator with the end that assembled end cap, with bolt stator is fixed on the stator positioning disk, the stator positioning disk that stator will be installed again is installed on the center of stator fixed station, and guarantees that the central axis of stator is vertical with horizontal plane and coaxial with the rotor floating seat; Rocking arm is installed on the column, and can move up and down by a screw drive mechanism, drives the rotor that is installed on the rocking arm and together move up and down when rocking arm moves up and down, and realizes that the permagnetic synchronous motor rotor closes dismounting.Described screw drive mechanism is electronic, and by driven by motor screw mandrel rotation, screw mandrel drives nut rocking arm on the rocking arm along column moving linearly in vertical direction, thereby drives rotor in that axially to make straight line moving; And control the relative position of motor speed and rotor by the operating electrical machines control box.Because after the latching characteristics of screw thread drive mechanism had determined that motor stops operating, rotor stopped when axial motion stops immediately.
When the vertical assembling of rocker-arm, rotor and stator attach together after the bearing fairlead enters bearing chamber, if problem will take place in the bearing assembling when causing that because of position error the rotor center does not overlap, this moment, the rotor relative stator needed unsteady relatively, pulling out the conical surface alignment pin this moment floats rotor, realization bearing automatic guiding is finished assembling, thereby realizes unsteady because unsteady positioning seat of rotor and rocking arm contact-making surface are spheres.
Close attaching/detaching apparatus according to a kind of permagnetic synchronous motor rotor that said method provided, for the vertical permagnetic synchronous motor rotor of a kind of rocker-arm closes attaching/detaching apparatus, comprise support, on support, be provided with the stator fixed station, column is installed on support simultaneously, one rocking arm is installed on the column; rocking arm drives and can move up and down along the column guide rail by screw drive mechanism; when rocking arm moves up and down, drive the rotor that is installed on the rocking arm and together move up and down, realizes that the permagnetic synchronous motor rotor closes dismounting; Unsteady positioning seat is installed on the termination of rocking arm; Unsteady positioning seat and rocking arm contact-making surface are spheres; Rotor is a locating surface with the cylindrical and the end face of shaft extension end cylindrical and end face or its extended end, be fixed on the rocking arm by a unsteady positioning seat, and guarantee that rotor axis is vertical with horizontal plane, and with the center line of workbench on same straight line, also be provided with the correcting bar at the front end of rotor; On unsteady positioning seat and rocking arm, be provided with conical dowel pin, plug conical dowel pin after the positioning seat stationary positioned of floating; Stator is with the bearing chamber and the end face location thereof of the end that assembled end cap, with bolt stator is fixed on the stator positioning disk, the stator positioning disk that stator will be installed again is installed on the center of stator fixed station, and guarantees that the central axis of stator is vertical with horizontal plane and coaxial with the rotor floating seat.Described screw drive mechanism is electronic, motor and screw mandrel are installed on column, screw mandrel is vertical the installation, the nut that screw mandrel is paid is installed on the rocking arm, rotate by the driven by motor screw mandrel, screw mandrel drives nut rocking arm on the rocking arm along column moving linearly in vertical direction, thereby drives rotor in that axially to make straight line moving, and controls the relative position of motor speed and rotor by the operating electrical machines control box; Also be provided with limit switch on column, stopping in emergency when preventing rocking arm to extreme position is because after the latching characteristics of screw thread drive mechanism determined that motor stops operating, rotor stopped when axial motion stops immediately.
The invention has the advantages that: the permagnetic synchronous motor rotor closes dismounting and adopts the assembling of vertical rocking arm, can be better by guaranteeing that mutual sag guarantees that rotor is concentric, have simple in structure, easy to operate, and advantage more reliably; Owing to adopted screw thread kinematic pair drive mechanism, simple with the hydraulic transmission comparative structure, cost is relatively low simultaneously; Movement velocity control aspect the present invention only need control single motor speed ratio and be easier to realize that it is relatively simple for structure to compare HYDRAULIC CONTROL SYSTEM, operates also more conveniently, relatively takes up an area of minimum with hydraulic driven and horizontal assembling device.
Description of drawings
Fig. 1 is a system configuration schematic diagram of the present invention;
Fig. 2 is the unsteady seat structure schematic diagram in rotor of the present invention location;
Fig. 3 is a stator positioning disk structural representation of the present invention.
Embodiment
The present invention is further described below in conjunction with drawings and Examples.
Accompanying drawing 1-3 has provided a kind of schematic diagram of the present invention, the present invention relates to a kind of permagnetic synchronous motor rotor as can be seen by accompanying drawing and close the dismounting mode, adopt the vertical permagnetic synchronous motor rotor of rocker-arm to close the dismounting mode, is locating surface with rotor with the cylindrical and the end face of shaft extension end cylindrical and end face or its extended end, be fixed on the rocking arm by a unsteady positioning seat, plug conical dowel pin after the positioning seat stationary positioned of floating, and guaranteed that rotor axis is vertical with horizontal plane, and with the center line of workbench on same straight line, also be provided with the correcting bar at the front end of rotor; Again with bearing chamber and the end face location thereof of stator with the end that assembled end cap, with bolt stator is fixed on the stator positioning disk, the stator positioning disk that stator will be installed again is installed on the center of stator fixed station, and guarantees that the central axis of stator is vertical with horizontal plane and coaxial with the rotor floating seat; Rocking arm is installed on the column, and can move up and down by a screw drive mechanism, drives the rotor that is installed on the rocking arm and together move up and down when rocking arm moves up and down, and realizes that the permagnetic synchronous motor rotor closes dismounting.Described screw drive mechanism is electronic, and by driven by motor screw mandrel rotation, screw mandrel drives nut rocking arm on the rocking arm along column moving linearly in vertical direction, thereby drives rotor in that axially to make straight line moving; And control the relative position of motor speed and rotor by the operating electrical machines control box.Because after the latching characteristics of screw thread drive mechanism had determined that motor stops operating, rotor stopped when axial motion stops immediately.
Close attaching/detaching apparatus according to a kind of permagnetic synchronous motor rotor that said method provided: general structure as shown in Figure 1, for the vertical permagnetic synchronous motor rotor of a kind of rocker-arm closes attaching/detaching apparatus, comprise support 1,1 is provided with stator fixed station 2 on support, column 3 is installed on support 1 simultaneously, one Rocker arm 4 is installed on the column 3; Rocker arm 4 drives and can move up and down along column 3 by screw drive mechanism; when Rocker arm 4 moves up and down, drive the rotor 5 that is installed on the rocking arm and together move up and down, realizes that the permagnetic synchronous motor rotor closes dismounting; The positioning seat 6 that floats is installed on the termination of Rocker arm 4; The positioning seat 6 that floats is a sphere with the rocking arm contact-making surface; Rotor 5 is a locating surface with the cylindrical and the end face of shaft extension end cylindrical and end face or its extended end, positioning seat 6 is fixed on the Rocker arm 4 by floating, and guarantee that rotor axis is vertical with horizontal plane, and with the center line of stator 7 on same straight line, also be provided with correcting bar 8 at the front end of rotor 5; On unsteady positioning seat 6 and Rocker arm 4, be provided with conical dowel pin 9, plug conical dowel pin 9 after positioning seat 6 stationary positioned of floating; Stator 7 is with the bearing chamber and the end face location thereof of the end that assembled end cap, with bolt stator 7 is fixed on the stator positioning disk 10, the stator positioning disk 10 that stator 7 will be installed again is installed on the center of stator fixed station 2, and guarantees that the central axis of stator 7 is vertical with horizontal plane and coaxial with the unsteady positioning seat 6 of rotor.Described screw drive mechanism is electronic, motor 11 and screw mandrel 12 are installed on column, screw mandrel 12 is vertical the installation, the nut 13 that screw mandrel is paid is installed on the rocking arm, drive screw mandrel 12 rotations by motor 11, screw mandrel 12 drives nut 13 on the Rocker arm 4s along column 3 moving linearly in vertical direction, thereby drives rotor 5 in that axially to make straight line moving, and controls the relative position of motor speed and rotor by the operating electrical machines control box; Described screw mandrel is paid and is self-locking structure; Also be provided with limit switch 14 on column, stopping in emergency when preventing rocking arm to extreme position is because after the latching characteristics of screw thread drive mechanism determined that motor stops operating, rotor stopped when axial motion stops immediately.On stator fixed station 2, be provided with simultaneously the retaining mechanism 15 of locking stator positioning disk 10.
Accompanying drawing 2 is the unsteady positioning seat structural representation of rotor of the present invention, and the positioning seat 6 that floats is installed in Rocker arm 4, and unsteady positioning seat 6 is that sphere contacts with the contact-making surface of Rocker arm 4; Between unsteady positioning seat 6 and Rocker arm 4, be provided with conical dowel pin 9.When the vertical assembling of rocker-arm, rotor 5 and stator attach together after the bearing fairlead enters bearing chamber, if problem will take place in the bearing assembling when causing that because of position error the rotor center does not overlap, this moment, rotor 5 relative stator needed unsteady relatively, pulling out the conical surface alignment pin this moment floats rotor, realization bearing automatic guiding is finished assembling, thereby realizes unsteady because unsteady positioning seat of rotor and rocking arm contact-making surface are spheres.
Accompanying drawing 3 is stator positioning disk structural representation of the present invention, the end cap bearing chamber location on an end and the stator, and the other end and stator holder link, and the center of the cylindrical that cooperates with stator holder has determined the axis of stator and the relative position of equipment.
Major advantage of the present invention is: screw thread kinematic pair and hydraulic transmission comparative structure are simple, and cost is relatively low; Movement velocity control aspect the present invention only need control single motor speed ratio and be easier to realize that it is fairly simple to compare the hydraulic system control structure, operates also more conveniently, relatively takes up an area minimum with hydraulic driven and horizontal assembling device.
Claims (7)
1. a permagnetic synchronous motor rotor closes the dismounting mode, it is characterized in that: adopt the vertical permagnetic synchronous motor rotor of rocker-arm to close the dismounting mode, is locating surface with rotor with the cylindrical and the end face of shaft extension end cylindrical and end face or its extended end, be fixed on the rocking arm by a unsteady positioning seat, plug conical dowel pin after the positioning seat stationary positioned of floating, and guaranteed that rotor axis is vertical with horizontal plane, and with the center line of workbench on same straight line, also be provided with the correcting bar at the front end of rotor; Again with bearing chamber and the end face location thereof of stator with the end that assembled end cap, with bolt stator is fixed on the stator positioning disk, the stator positioning disk that stator will be installed again is installed on the center of stator fixed station, and guarantees that the central axis of stator is vertical with horizontal plane and coaxial with the rotor floating seat; Rocking arm is installed on the column, and can move up and down by a screw drive mechanism, drives the rotor that is installed on the rocking arm and together move up and down when rocking arm moves up and down, and realizes that the permagnetic synchronous motor rotor closes dismounting.
2. permagnetic synchronous motor rotor as claimed in claim 1 closes the dismounting mode, it is characterized in that: described screw drive mechanism is electronic, rotate by the driven by motor screw mandrel, screw mandrel drives nut rocking arm on the rocking arm along column moving linearly in vertical direction, thereby drives rotor in that axially to make straight line moving; And control the relative position of motor speed and rotor by the operating electrical machines control box.
3. permagnetic synchronous motor rotor as claimed in claim 1 closes the dismounting mode, it is characterized in that: when the vertical assembling of rocker-arm, rotor and stator attach together after the bearing fairlead enters bearing chamber, if problem will take place in the bearing assembling when causing that because of position error the rotor center does not overlap, this moment, the rotor relative stator needed unsteady relatively, pulling out the conical surface alignment pin this moment floats rotor, realization bearing automatic guiding is finished assembling, thereby realizes unsteady because unsteady positioning seat of rotor and rocking arm contact-making surface are spheres.
4. a permagnetic synchronous motor rotor closes the dismounting composite set, it is characterized in that: for the vertical permagnetic synchronous motor rotor of a kind of rocker-arm closes attaching/detaching apparatus, comprise support, on support, be provided with the stator fixed station, simultaneously column is installed on support, a rocking arm is installed on the column, rocking arm drives and can move up and down along the column guide rail by screw drive mechanism, when rocking arm moves up and down, drive the rotor that is installed on the rocking arm and together move up and down, realize that the permagnetic synchronous motor rotor closes dismounting; Unsteady positioning seat is installed on the termination of rocking arm; Unsteady positioning seat and rocking arm contact-making surface are spheres; Rotor is a locating surface with the cylindrical and the end face of shaft extension end cylindrical and end face or its extended end, be fixed on the rocking arm by a unsteady positioning seat, and guarantee that rotor axis is vertical with horizontal plane, and with the center line of workbench on same straight line, also be provided with the correcting bar at the front end of rotor; On unsteady positioning seat and rocking arm, be provided with conical dowel pin, plug conical dowel pin after the positioning seat stationary positioned of floating; Stator is with the bearing chamber and the end face location thereof of the end that assembled end cap, with bolt stator is fixed on the stator positioning disk, the stator positioning disk that stator will be installed again is installed on the center of stator fixed station, and guarantees that the central axis of stator is vertical with horizontal plane and coaxial with the rotor floating seat.
5. permagnetic synchronous motor rotor as claimed in claim 4 closes the dismounting composite set, it is characterized in that: described screw drive mechanism is electronic, motor and screw mandrel are installed on column, screw mandrel is vertical the installation, the nut that screw mandrel is paid is installed on the rocking arm, rotate by the driven by motor screw mandrel, screw mandrel drives nut rocking arm on the rocking arm along column moving linearly in vertical direction, thereby drive rotor in that axially to make straight line moving, and control the relative position of motor speed and rotor by the operating electrical machines control box.
6. permagnetic synchronous motor rotor as claimed in claim 5 closes the dismounting composite set, it is characterized in that: described screw mandrel is paid and is self-locking structure.
7. permagnetic synchronous motor rotor as claimed in claim 5 closes the dismounting composite set, it is characterized in that: also be provided with limit switch on column.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011100793688A CN102097896B (en) | 2011-03-31 | 2011-03-31 | Method and assembling device for assembling and disassembling stator and rotor of permanent magnet synchronous motor |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2011100793688A CN102097896B (en) | 2011-03-31 | 2011-03-31 | Method and assembling device for assembling and disassembling stator and rotor of permanent magnet synchronous motor |
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| CN102097896A true CN102097896A (en) | 2011-06-15 |
| CN102097896B CN102097896B (en) | 2012-11-14 |
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| CN104269974A (en) * | 2014-09-10 | 2015-01-07 | 中国科学院上海光学精密机械研究所 | Method for installing large-caliber permanent magnet direct-current torque motor |
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