CN112223205B - Rotor dismounting device - Google Patents
Rotor dismounting device Download PDFInfo
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- CN112223205B CN112223205B CN202010886115.0A CN202010886115A CN112223205B CN 112223205 B CN112223205 B CN 112223205B CN 202010886115 A CN202010886115 A CN 202010886115A CN 112223205 B CN112223205 B CN 112223205B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
- B25B27/00—Hand tools, specially adapted for fitting together or separating parts or objects whether or not involving some deformation, not otherwise provided for
- B25B27/14—Hand tools, specially adapted for fitting together or separating parts or objects whether or not involving some deformation, not otherwise provided for for assembling objects other than by press fit or detaching same
Abstract
The invention relates to a rotor dismounting device, which aims to solve the problem that when a stator and a rotor of an inner rotor type permanent magnet synchronous motor are separated by adopting a traditional method, the stator and the rotor are collided, and a permanent magnet of the rotor is damaged and cannot be reused. The device is including fixed frock, radial magnetic force offsets the unit, separate the magnetism unit, the sensor unit, fixed frock is used for placing and treats the dismantlement motor, and fix its stator, radial magnetic force offsets the unit and is treating the dismantlement motor outside and applys magnetic force to rotor circumference, it is used for keeping apart the magnetic force effect that radial magnetic force offsets the unit to the rotor to separate the magnetism unit, can adjust the magnetic force effect size that radial magnetic force offsets the unit to the rotor through adjusting to separate the magnetism unit, the sensor unit is used for responding to the magnetic force effect condition between radial magnetic force offsets unit and the rotor. The radial attractive force of the rotor to the stator is counteracted through the radial magnetic force counteracting unit, so that the position of the rotor in the stator is relatively balanced, and the rotor can be taken out stably.
Description
Technical Field
The invention relates to a rotor dismounting device.
Background
The inner rotor type permanent magnet synchronous motor mainly comprises a stator, a rotor, an end cover and the like, wherein the stator is formed by laminating and pressing a lamination, the stator has good magnetic conductivity, the rotor can be made into a solid form or can be formed by laminating and pressing the lamination, a permanent magnet material is arranged on the rotor, and the rotor has larger radial attraction to the stator under the action of a permanent magnet. When the operating mode takes place the sudden change, leads to the motor to break down, needs the stator and the rotor separation of motor, because the structural reason of motor, adopt traditional separation method to make and take place to collide with between stator and the rotor, cause the permanent magnet damage of rotor and can't recycle.
Disclosure of Invention
The invention aims to solve the problem that when a stator and a rotor of an inner rotor type permanent magnet synchronous motor are separated by adopting a traditional method, the stator and the rotor are collided, and a permanent magnet of the rotor is damaged and cannot be reused, and provides a rotor dismounting device.
In order to achieve the purpose, the technical scheme adopted by the invention is as follows:
a rotor dismounting device is characterized in that:
the device comprises a fixed tool, a radial magnetic force counteracting unit, a magnetism isolating unit and a sensor unit;
the fixing tool comprises a support and a cover plate provided with a central hole; the bracket comprises an inner barrel for placing a motor to be disassembled; the cover plate is arranged above the bracket, and the diameter of a central hole of the cover plate is larger than the outer diameter of a rotor of the motor to be disassembled and smaller than the outer diameter of a stator of the motor to be disassembled;
the radial magnetic force counteracting unit comprises n tile-shaped magnetic bodies which are distributed along the circumferential direction of the outer side of the inner barrel and are in one-to-one correspondence with the magnetic poles of the rotor to form a barrel-shaped structure, and the polarities of the magnetic poles are the same as those of the corresponding magnetic poles; n is the number of magnetic poles of the rotor;
the magnetic isolation unit is positioned between the inner barrel and the radial magnetic force counteracting unit and is used for adjusting the magnetic force action of the radial magnetic force counteracting unit on the rotor so as to enable the radial magnetic force counteracting unit to counteract the radial attraction of each magnetic pole of the rotor on the stator;
the sensor unit comprises n tile-shaped pressure sensors, and the n tile-shaped pressure sensors are distributed between the motor to be disassembled and the inner barrel and correspond to each magnetic pole of the rotor one by one to form a barrel-shaped structure; transition fit is respectively formed between the tile-shaped pressure sensor and the inner barrel and between the tile-shaped pressure sensor and the motor to be disassembled.
Further, the magnetism isolating unit comprises a first barrel-shaped magnetism isolating sleeve;
the first barrel-shaped magnetism isolating sleeve can move along the axial direction.
Further, the magnetism isolating unit comprises a plurality of second barrel-shaped magnetism isolating sleeves which are radially overlapped;
the plurality of second barrel-shaped magnetism isolating sleeves can respectively move along the axial direction.
Further, the magnetism isolating unit comprises a plurality of radially superposed third barrel-shaped magnetism isolating sleeves;
through holes are formed in the third barrel-shaped magnetic isolation sleeves and correspond to the through holes one to one;
the third barrel-shaped magnetism isolating sleeves can rotate respectively.
Further, the magnetism isolating unit comprises n tile-shaped magnetism isolating sleeves;
the n tile-shaped magnetic isolation sleeves correspond to the magnetic poles of the rotor one by one to form a barrel-shaped structure;
the n tile-shaped magnetic isolation sleeves can respectively move along the axial direction.
Further, the device also comprises an axial magnetic force acting unit arranged at the bottom of the bracket;
the magnetic force of the axial magnetic force action unit is adjustable, and the rotor is pushed out of the stator through the repulsive force of the axial magnetic force action unit to the rotor.
Further, axial magnetic force effect unit includes at least one first cylindric magnetic force body subassembly that sets gradually along the axial, first cylindric magnetic force body subassembly includes that n cross sections are sectorial first cylindrical magnetic force body, and n first cylindrical magnetic force body and each magnetic pole one-to-one of rotor, and respectively with correspond the magnetic pole polarity the same.
Furthermore, the axial magnetic force action unit comprises a cylindrical electromagnet assembly, the cylindrical electromagnet assembly comprises n cylindrical electromagnets with sector-shaped cross sections, and the n cylindrical electromagnets are in one-to-one correspondence with the magnetic poles of the rotor and have the same polarity as the corresponding magnetic poles respectively.
Further, the columnar electromagnet comprises an iron core and a coil;
the winding resistance of the coil is 2.1-2.4 omega, the number of turns is 22-27, and the wire diameter is 0.29 mm.
Further, the axial magnetic force acting unit comprises a second cylindrical magnetic body assembly and a sheet-shaped magnetic isolation sleeve;
the second cylindrical magnetic body assembly comprises n second cylindrical magnetic bodies with sector-shaped cross sections, and the n second cylindrical magnetic bodies correspond to the magnetic poles of the rotor one by one and have the same polarity as the corresponding magnetic poles respectively;
the sheet-shaped magnetic isolation sleeve is positioned between the second cylindrical magnetic body assembly and the rotor and can move along the radial direction.
Compared with the prior art, the invention has the beneficial effects that:
(1) according to the rotor dismounting device provided by the invention, the radial magnetic force counteracting unit is additionally arranged on the outer side of the inner barrel for placing the motor to be dismounted to counteract the radial attraction of the rotor to the stator, so that the position of the rotor in the stator is relatively balanced, the rotor can be stably taken out, and the adsorption trend contact of the rotor to the stator is reduced in the taking-out process, so that the occurrence of collision is avoided, the problem that the rotor cannot be reused due to collision damage is effectively solved, the device is simple in structure and convenient to use, the defects that the using process of the traditional motor rotor dismounting device is complex and the rotor is easy to damage are effectively overcome, and the device has a wide application prospect;
(2) in the device, the axial magnetic force action unit is arranged at the bottom of the bracket, the rotor is stably pushed out from the stator by utilizing the repulsive force of the axial magnetic force action unit to the rotor, the rotor is uniformly stressed in the pushing-out process and is not easy to shake, the rotor and the stator can be ensured to be free of contact, and the rotor cannot collide with the stator;
(3) in the device, winding resistance, turns and wire diameter parameters of the columnar electromagnet are accurately designed, so that the columnar electromagnet can not generate irreversible demagnetization on a rotor, the maximum electrified voltage of the columnar electromagnet is 35V, and the voltage meets the human body safety voltage.
Drawings
FIG. 1 is a schematic structural diagram of a first embodiment of a rotor disassembling apparatus according to the present invention;
FIG. 2 is a cross-sectional view of a first embodiment of the present invention;
FIG. 3 is a schematic structural diagram of a third embodiment of a rotor dismounting device according to the present invention;
in the figure, 01-rotor, 02-stator; 1-fixing tool, 11-bracket, 111-inner barrel, 12-cover plate, 121-center hole, 2-radial magnetic force counteracting unit, 3-magnetism isolating unit, 4-sensor unit, 5-axial magnetic force acting unit, 51-second cylindrical magnetic body component and 52-sheet-shaped magnetism isolating sleeve.
Detailed Description
To make the objects, advantages and features of the present invention more apparent, a rotor disassembling apparatus according to the present invention will be described in detail with reference to the accompanying drawings and specific embodiments.
The rotor dismounting device provided by the invention mainly applies magnetic force to the circumferential direction of the rotor on the outer side of the motor to be dismounted under the condition that the stator is fixed, and counteracts the radial attraction of the rotor to the stator according to the principle that like poles repel each other, so that the position of the rotor in the stator is relatively balanced, the rotor is stably taken out, and the collision is avoided. The device is including fixed frock, radial magnetic force offsets the unit, separate the magnetism unit, the sensor unit, fixed frock is used for placing and treats the dismantlement motor, and fix its stator, radial magnetic force offsets the unit and is treating the dismantlement motor outside and applys magnetic force to rotor circumference, it can keep apart the magnetic force effect that radial magnetic force offsets the unit to the rotor to separate the magnetism unit, can adjust the magnetic force effect size that radial magnetic force offsets the unit to the rotor through adjusting to separate the magnetism unit, the sensor unit is used for responding to the magnetic force effect condition between radial magnetic force offsets unit and the rotor. In addition, an axial magnetic force action unit can be arranged at the bottom of the fixing tool, and the rotor can be slowly and stably pushed out of the stator by using magnetic force. The above-described mechanism units have many structural forms, and the device proposed by the present invention can be configured by arranging and combining different structural forms of the mechanism units, but they are substantially the same, and the following is a detailed description of four embodiments.
Example one
As shown in fig. 1 and 2, the device includes a fixing tool 1, a radial magnetic force counteracting unit 2, a magnetism isolating unit 3, a sensor unit 4, and an axial magnetic force acting unit 5.
Fixed frock 1 includes support 11 and the apron 12 that is provided with centre bore 121, and support 11 is including being used for placing the interior bucket 111 of waiting to dismantle the motor, and apron 12 sets up in support 11 top, and its centre bore 121 is just to the one end of waiting to dismantle the motor, and the diameter of centre bore 121 is greater than the rotor 01 external diameter of waiting to dismantle the motor, is less than the stator 02 external diameter of waiting to dismantle the motor for restrict stator 02 axial displacement, and rotor 01 accessible centre bore 121 takes out.
The radial magnetic force counteracting unit 2 comprises n tile-shaped magnetic bodies which are distributed along the outer circumferential direction of the inner barrel 111 and are in one-to-one correspondence with the magnetic poles of the rotor 01 to form a barrel-shaped structure, and the polarities of the magnetic poles are the same as those of the corresponding magnetic poles respectively; n is the number of magnetic poles of the rotor 01. The tile-shaped magnetic body can be composed of a permanent magnet or an electromagnet, and the magnetic force of the tile-shaped magnetic body is constant and is larger than the magnetic force of each magnetic pole of the rotor 01. In this embodiment, the number of magnetic poles of the rotor 01 is 4, and therefore the number of tile-shaped magnetic bodies is also 4.
The magnetism isolating unit 3 is located between the inner barrel 111 and the radial magnetic force counteracting unit 2, and is used for adjusting the magnetic force action of the radial magnetic force counteracting unit 2 on the rotor 01, so that the radial magnetic force counteracting unit 2 counteracts the radial attraction of each magnetic pole of the rotor 01 on the stator 02, and the rotor 01 is relatively balanced in position in the stator 02. Specifically, the magnetism isolating unit 3 includes a first barrel-shaped magnetism isolating sleeve, and the first barrel-shaped magnetism isolating sleeve can move along the axial direction. The first barrel-shaped magnetism isolating sleeve can completely isolate the magnetic action of the radial magnetism counteracting unit 2 on the rotor 01, when the first barrel-shaped magnetism isolating sleeve is slowly drawn out from the upper end of the bracket 11, the magnetism isolating effect of the magnetism isolating unit 3 is gradually weakened, and the magnetic action of the radial magnetism counteracting unit 2 on the rotor 01 is gradually increased. The first barrel-shaped magnetism isolating sleeve can be made of magnetism isolating materials and can also be made of permanent magnets or electromagnets.
The sensor unit 4 includes n tile-shaped pressure sensors, which are distributed between the motor to be disassembled and the inner barrel 111 and correspond to the magnetic poles of the rotor 01 one by one to form a barrel-shaped structure. Here, the number of the tile-shaped pressure sensors is 4 according to the number of the magnetic poles of the rotor 01. Transition fit is respectively between tile-shaped pressure sensor and interior bucket 111 and between tile-shaped pressure sensor and the motor of waiting to dismantle, and tile-shaped pressure sensor and interior bucket 111 and tile-shaped pressure sensor and the motor of waiting to dismantle are all just had the contact promptly, but do not have the state of effort each other.
The tile-shaped pressure sensors can convert the deformation into an electric signal, and then the deformation can be calculated, the position of the rotor 01 in the stator 02 can be known by calculating the deformation of all the pressure sensors, if the rotor 01 and the inner barrel 111 are concentric, namely, a balance state is reached, the more the rotor 01 and the inner barrel 111 are eccentric, the more the magnetic force borne by the rotor 01 is uneven, and the magnetic field force of the rotor 01 to the stator 02 is difficult to offset. The tile-shaped pressure sensor can be made of a capacitor structure, and when the relative positions of two polar plates of the capacitor change, the capacitance value also changes, so that electric signals at two ends of the capacitor are changed. According to the induction result of the sensor unit 4, the relative position of the first barrel-shaped magnetism isolating sleeve is adjusted, so that the induction position of the sensor unit 4 is optimal, namely the magnetic force action of the rotor 01 on the stator 02 is minimum, and at the moment, the rotor 01 can be detached by applying axial acting force.
The axial magnetic force action unit 5 is arranged at the bottom of the support 11 and is opposite to the other end of the motor to be disassembled. The magnetic force of the axial magnetic force action unit 5 is adjustable, and the rotor 01 is pushed out of the stator 02 through the repulsive force of the axial magnetic force action unit 5 to the rotor 01. Specifically, the axial magnetic force acting unit 5 includes at least one first cylindrical magnetic body assembly sequentially arranged along the axial direction, the first cylindrical magnetic body assembly includes n first cylindrical magnetic bodies having sector-shaped cross sections, the first cylindrical magnetic bodies may be constituted by permanent magnets or electromagnets, the magnetic force is fixed and unchanged, and the n first cylindrical magnetic bodies correspond to the magnetic poles of the rotor 01 one to one and have the same polarity as the corresponding magnetic poles. The number of the first columnar magnets is 4 here.
The use method of the device comprises the following steps:
1) removing an end cover at one end of a motor to be detached, then installing the motor to be detached into the inner barrel 111 of the bracket 11, and installing the cover plate 12 to ensure that a central hole 121 in the cover plate 12 is opposite to the end, from which the end cover is removed, of the motor to be detached;
2) slowly drawing out the first barrel-shaped magnetism isolating sleeve upwards to enable the magnetic force action of the radial magnetic force counteracting unit 2 on the rotor 01 to be gradually increased, observing the reading of each tile-shaped pressure sensor, and when the reading of each tile-shaped pressure sensor is smaller than a preset threshold value, considering that the position of the rotor 01 in the stator 02 is balanced;
3) the number of the first cylindrical magnetic body assemblies is gradually increased, so that the magnetic force action of the axial magnetic force action unit 5 on the rotor 01 is gradually increased until the rotor 01 is slowly and smoothly pushed out of the stator 02.
Example two
Referring to fig. 1 and 2, the device comprises a fixing tool 1, a radial magnetic force counteracting unit 2, a magnetism isolating unit 3, a sensor unit 4 and an axial magnetic force acting unit 5.
The radial magnetic force counteracting unit 2 comprises n tile-shaped magnetic bodies which are distributed along the outer circumferential direction of the inner barrel 111 and are in one-to-one correspondence with the magnetic poles of the rotor 01 to form a barrel-shaped structure, and the polarities of the magnetic poles are the same as those of the corresponding magnetic poles respectively; n is the number of magnetic poles of the rotor 01. The tile-shaped magnetic body can be composed of a permanent magnet or an electromagnet, and the magnetic force of the tile-shaped magnetic body is constant and is larger than the magnetic force of each magnetic pole of the rotor 01. In this embodiment, the number of magnetic poles of the rotor 01 is 4, and therefore the number of tile-shaped magnetic bodies is 4.
The magnetism isolating unit 3 is located between the inner barrel 111 and the radial magnetic force counteracting unit 2, and is used for adjusting the magnetic force action of the radial magnetic force counteracting unit 2 on the rotor 01, so that the radial magnetic force counteracting unit 2 counteracts the radial attraction of each magnetic pole of the rotor 01 on the stator 02, and the rotor 01 is relatively balanced in position in the stator 02. Specifically, the magnetism isolation unit 3 includes a plurality of radially-stacked second barrel-shaped magnetism isolation sleeves, and the plurality of second barrel-shaped magnetism isolation sleeves are respectively movable in the axial direction. The magnetic force action of the radial magnetic force counteracting unit 2 on the rotor 01 can be completely isolated after the second barrel-shaped magnetic isolation sleeves are overlapped, when the second barrel-shaped magnetic isolation sleeves are slowly drawn out from the upper end of the support 11 one by one, the magnetic isolation effect of the magnetic isolation unit 3 is gradually weakened, and the magnetic force action of the radial magnetic force counteracting unit 2 on the rotor 01 is gradually increased. The plurality of second barrel-shaped magnetism isolating sleeves can be made of materials with different magnetism isolating rates, or made of materials with the same magnetism isolating rates, or made of materials with different magnetism isolating rates, or made of permanent magnets or electromagnets.
The sensor unit 4 includes n tile-shaped pressure sensors, which are distributed between the motor to be disassembled and the inner barrel 111 and correspond to the magnetic poles of the rotor 01 one by one to form a barrel-shaped structure. Here, the number of the tile-shaped pressure sensors is 4 according to the number of the magnetic poles of the rotor 01. Transition fit is respectively between tile-shaped pressure sensor and interior bucket 111 and between tile-shaped pressure sensor and the motor of waiting to dismantle, and tile-shaped pressure sensor and interior bucket 111 and tile-shaped pressure sensor and the motor of waiting to dismantle are all just had the contact promptly, but do not have the state of effort each other. The structure and the working principle of the tile-shaped pressure sensor are the same as those of the first embodiment.
The axial magnetic force action unit 5 is arranged at the bottom of the support 11 and is opposite to the other end of the motor to be disassembled. The magnetic force of the axial magnetic force action unit 5 is adjustable, and the rotor 01 is pushed out of the stator 02 through the repulsive force of the axial magnetic force action unit 5 to the rotor 01. Specifically, the axial magnetic force acting unit 5 includes a cylindrical electromagnet assembly including n cylindrical electromagnets having sector-shaped cross sections, the magnetic force of the cylindrical electromagnets is adjustable, and the n cylindrical electromagnets are in one-to-one correspondence with the magnetic poles of the rotor 01 and have the same polarity as the corresponding magnetic poles. Here 4 columnar electromagnets.
The columnar electromagnet comprises an iron core and a coil; the winding resistance of the coil is 2.1-2.4 omega, the number of turns is 22-27, and the wire diameter is 0.29 mm.
The use method of the device comprises the following steps:
1) removing an end cover at one end of a motor to be detached, then installing the motor to be detached into the inner barrel 111 of the bracket 11, and installing the cover plate 12 to ensure that a central hole 121 in the cover plate 12 is opposite to the end, from which the end cover is removed, of the motor to be detached;
2) the second barrel-shaped magnetism isolating sleeves are slowly drawn out upwards one by one, so that the magnetic force action of the radial magnetic force counteracting unit 2 on the rotor 01 is gradually increased, the reading of each tile-shaped pressure sensor is observed, and when the reading of each tile-shaped pressure sensor is smaller than a preset threshold value, the rotor 01 is considered to be balanced in the stator 02;
3) the current passing through each columnar electromagnet of the columnar electromagnet assembly is gradually increased, so that the magnetic force action of the axial magnetic force action unit 5 on the rotor 01 is gradually increased until the rotor 01 is slowly and smoothly pushed out of the stator 02.
EXAMPLE III
As shown in fig. 2 and 3, the device includes a fixing tool 1, a radial magnetic force counteracting unit 2, a magnetism isolating unit 3, a sensor unit 4, and an axial magnetic force acting unit 5.
The radial magnetic force counteracting unit 2 comprises n tile-shaped magnetic bodies which are distributed along the outer circumferential direction of the inner barrel 111 and are in one-to-one correspondence with the magnetic poles of the rotor 01 to form a barrel-shaped structure, and the polarities of the magnetic poles are the same as those of the corresponding magnetic poles respectively; n is the number of magnetic poles of the rotor 01. The tile-shaped magnetic body can be composed of a permanent magnet or an electromagnet, and the magnetic force of the tile-shaped magnetic body is constant and is larger than the magnetic force of each magnetic pole of the rotor 01. In this embodiment, the number of magnetic poles of the rotor 01 is 4, and therefore the number of tile-shaped magnetic bodies is 4.
The magnetism isolating unit 3 is located between the inner barrel 111 and the radial magnetic force counteracting unit 2, and is used for adjusting the magnetic force action of the radial magnetic force counteracting unit 2 on the rotor 01, so that the radial magnetic force counteracting unit 2 counteracts the radial attraction of each magnetic pole of the rotor 01 on the stator 02, and the rotor 01 is relatively balanced in position in the stator 02. Specifically, the magnetism isolating unit 3 includes two radially superimposed third barrel-shaped magnetism isolating sleeves, through holes are correspondingly formed in the two third barrel-shaped magnetism isolating sleeves, the two third barrel-shaped magnetism isolating sleeves can rotate relatively, the size of a window formed by the two through holes can be changed during rotation, and the magnetic flux can be changed by changing the size of the window, so that the magnetic field adjusting effect is achieved. When the two third barrel-shaped magnetism isolating sleeves are overlapped and the two through holes on the third barrel-shaped magnetism isolating sleeves are not overlapped, the magnetic action of the radial magnetism counteracting unit 2 on the rotor 01 can be completely isolated, when any third barrel-shaped magnetism isolating sleeve is rotated, the overlapping area of the two through holes is gradually increased, the magnetism counteracting effect of the magnetism counteracting unit 3 is gradually weakened, and the magnetic action of the radial magnetism counteracting unit 2 on the rotor 01 is gradually increased.
The sensor unit 4 includes n tile-shaped pressure sensors, which are distributed between the motor to be disassembled and the inner barrel 111 and correspond to the magnetic poles of the rotor 01 one by one to form a barrel-shaped structure. Here, the number of the tile-shaped pressure sensors is 4 according to the number of the magnetic poles of the rotor 01. Transition fit is respectively between tile-shaped pressure sensor and interior bucket 111 and between tile-shaped pressure sensor and the motor of waiting to dismantle, and tile-shaped pressure sensor and interior bucket 111 and tile-shaped pressure sensor and the motor of waiting to dismantle are all just had the contact promptly, but do not have the state of effort each other. The structure and the working principle of the tile-shaped pressure sensor are the same as those of the first embodiment.
The axial magnetic force action unit 5 is arranged at the bottom of the support 11 and is opposite to the other end of the motor to be disassembled. The magnetic force of the axial magnetic force action unit 5 is adjustable, and the rotor 01 is pushed out of the stator 02 through the repulsive force of the axial magnetic force action unit 5 to the rotor 01. Specifically, the axial magnetic force acting unit 5 includes a second cylindrical magnetic body assembly 51 and a sheet-shaped magnetic shield 52, the second cylindrical magnetic body assembly 51 includes n second cylindrical magnetic bodies having a sector-shaped cross section, the second cylindrical magnetic bodies may be formed by permanent magnets or electromagnets, the magnetic force thereof is fixed, and the n second cylindrical magnetic bodies correspond to the magnetic poles of the rotor 01 one by one and have the same polarity as the corresponding magnetic poles. The number of the second columnar magnets is 4. The sheet-shaped magnetic shield 52 is located between the second cylindrical magnetic body assembly 51 and the rotor 01, and is movable in the radial direction. The acting force of the second cylindrical magnetic body assembly 51 on the rotor 01 is enough to push the rotor 01 out of the stator 02, the sheet-shaped magnetic isolation sleeve 52 can completely isolate the magnetic force of the second cylindrical magnetic body assembly 51 on the rotor 01, when the sheet-shaped magnetic isolation sleeve 52 is slowly pulled out from the side of the bracket 11, the magnetic isolation effect of the sheet-shaped magnetic isolation sleeve 52 is gradually weakened, and the magnetic force of the second cylindrical magnetic body assembly 51 on the rotor 01 is gradually increased.
Similar to the magnetic isolation unit 3, the sheet-shaped magnetic isolation sleeve 52 may be replaced by a plurality of axially stacked magnetic isolation sleeves, and through holes may be correspondingly formed on the plurality of axially stacked magnetic isolation sleeves.
The use method of the device comprises the following steps:
1) removing an end cover at one end of a motor to be detached, then installing the motor to be detached into the inner barrel 111 of the bracket 11, and installing the cover plate 12 to ensure that a central hole 121 in the cover plate 12 is opposite to the end, from which the end cover is removed, of the motor to be detached;
2) slowly rotating any third barrel-shaped magnetism isolating sleeve to enable the magnetic force action of the radial magnetic force counteracting unit 2 on the rotor 01 to be gradually increased, observing the reading of each tile-shaped pressure sensor, and when the reading of each tile-shaped pressure sensor is smaller than a preset threshold value, considering that the position of the rotor 01 in the stator 02 is balanced;
3) the sheet-like magnetic shield 52 is slowly pulled out from the holder 11 side, and the magnetic force action of the second cylindrical magnet assembly 51 on the rotor 01 is gradually increased until the rotor 01 is slowly and smoothly pushed out from the stator 02.
Example four
Referring to fig. 1 and 2, the device comprises a fixing tool 1, a radial magnetic force counteracting unit 2, a magnetism isolating unit 3, a sensor unit 4 and an axial magnetic force acting unit 5.
The radial magnetic force counteracting unit 2 comprises n tile-shaped magnetic bodies which are distributed along the outer circumferential direction of the inner barrel 111 and are in one-to-one correspondence with the magnetic poles of the rotor 01 to form a barrel-shaped structure, and the polarities of the magnetic poles are the same as those of the corresponding magnetic poles respectively; n is the number of magnetic poles of the rotor 01. The tile-shaped magnetic body can be composed of a permanent magnet or an electromagnet, and the magnetic force of the tile-shaped magnetic body is constant and is larger than the magnetic force of each magnetic pole of the rotor 01. In this embodiment, the number of magnetic poles of the rotor 01 is 4, and therefore the number of tile-shaped magnetic bodies is 4.
The magnetism isolating unit 3 is located between the inner barrel 111 and the radial magnetic force counteracting unit 2, and is used for adjusting the magnetic force action of the radial magnetic force counteracting unit 2 on the rotor 01, so that the radial magnetic force counteracting unit 2 counteracts the radial attraction of each magnetic pole of the rotor 01 on the stator 02, and the rotor 01 is relatively balanced in position in the stator 02. Specifically, the magnetic isolation unit 3 includes n tile-shaped magnetic isolation sleeves, the n tile-shaped magnetic isolation sleeves correspond to the magnetic poles of the rotor 01 one by one to form a barrel-shaped structure, and the n tile-shaped magnetic isolation sleeves can move along the axial direction respectively. Here, the number of the tile-shaped flux barriers is 4 according to the number of the magnetic poles of the rotor 01. The magnetic isolation body with the barrel-shaped structure consisting of the 4 tile-shaped magnetic isolation sleeves can completely isolate the magnetic action of the radial magnetic force counteracting unit 2 on the rotor 01, when any tile-shaped magnetic isolation sleeve is slowly drawn out from the upper end of the bracket 11, the magnetic isolation effect of the side is gradually weakened, and the magnetic action of the tile-shaped magnetic body of the side on the rotor 01 is gradually increased. The split magnetic isolation sleeve can meet the condition that the magnetic of each magnetic pole of the rotor 01 is uneven, so that the optimal balance of the position of the rotor 01 is realized, and the lossless disassembly is ensured. The tile-shaped magnetic isolation sleeve can be made of materials with different magnetic isolation rates to have the same thickness, or made of materials with the same magnetic isolation rate to have different thicknesses, or made of materials with different magnetic isolation rates to have different thicknesses, or made of a permanent magnet or an electromagnet.
The sensor unit 4 includes n tile-shaped pressure sensors, which are distributed between the motor to be disassembled and the inner barrel 111 and correspond to the magnetic poles of the rotor 01 one by one to form a barrel-shaped structure. Here, the number of the tile-shaped pressure sensors is 4 according to the number of the magnetic poles of the rotor 01. Transition fit is respectively between tile-shaped pressure sensor and interior bucket 111 and between tile-shaped pressure sensor and the motor of waiting to dismantle, and tile-shaped pressure sensor and interior bucket 111 and tile-shaped pressure sensor and the motor of waiting to dismantle are all just had the contact promptly, but do not have the state of effort each other. The structure and the working principle of the tile-shaped pressure sensor are the same as those of the first embodiment.
The axial magnetic force action unit 5 is arranged at the bottom of the support 11 and is opposite to the other end of the motor to be disassembled. The magnetic force of the axial magnetic force action unit 5 is adjustable, and the rotor 01 is pushed out of the stator 02 through the repulsive force of the axial magnetic force action unit 5 to the rotor 01. Specifically, the axial magnetic force acting unit 5 includes at least one first cylindrical magnetic body assembly sequentially arranged along the axial direction, the first cylindrical magnetic body assembly includes n first cylindrical magnetic bodies having sector-shaped cross sections, the first cylindrical magnetic bodies may be constituted by permanent magnets or electromagnets, the magnetic force is fixed and unchanged, and the n first cylindrical magnetic bodies correspond to the magnetic poles of the rotor 01 one to one and have the same polarity as the corresponding magnetic poles. The number of the first columnar magnets is 4 here.
The use method of the device comprises the following steps:
1) removing an end cover at one end of a motor to be detached, then installing the motor to be detached into the inner barrel 111 of the bracket 11, and installing the cover plate 12 to ensure that a central hole 121 in the cover plate 12 is opposite to the end, from which the end cover is removed, of the motor to be detached;
2) the tile-shaped magnetic isolation sleeves are slowly and upwards drawn out respectively, so that the magnetic action of the radial magnetic force counteracting unit 2 on the rotor 01 is gradually increased, and the reading of each tile-shaped pressure sensor is observed simultaneously. Generally, when one reading of two tile-shaped pressure sensors in opposite positions is 0 and the other reading is greater than a preset threshold value, the extraction degree of the tile-shaped magnetism isolating sleeve on one side of the sensor with the reading greater than the preset threshold value is increased, so that the acting force of the tile-shaped magnetic body on the side on the rotor 01 is increased, and the rotor 01 is considered to be in balance in the stator 02 by repeatedly adjusting the method until the reading of each tile-shaped pressure sensor is less than the preset threshold value;
3) the number of the first cylindrical magnetic body assemblies is gradually increased, so that the magnetic force action of the axial magnetic force action unit 5 on the rotor 01 is gradually increased until the rotor 01 is slowly and smoothly pushed out of the stator 02.
Claims (9)
1. A rotor dismounting device is characterized in that:
the device comprises a fixed tool (1), a radial magnetic force counteracting unit (2), a magnetism isolating unit (3), a sensor unit (4) and an axial magnetic force acting unit (5);
the fixing tool (1) comprises a support (11) and a cover plate (12) provided with a central hole (121); the bracket (11) comprises an inner barrel (111) for placing a motor to be disassembled; the cover plate (12) is arranged above the bracket (11), and the diameter of a central hole (121) of the cover plate is larger than the outer diameter of a rotor (01) of the motor to be disassembled and smaller than the outer diameter of a stator (02) of the motor to be disassembled;
the radial magnetic force counteracting unit (2) comprises n tile-shaped magnetic bodies, the n tile-shaped magnetic bodies are distributed along the outer side of the inner barrel (111) in the circumferential direction and correspond to the magnetic poles of the rotor (01) one by one to form a barrel-shaped structure, and the polarities of the magnetic poles are the same as those of the corresponding magnetic poles respectively; n is the number of magnetic poles of the rotor (01);
the magnetic isolation unit (3) is positioned between the inner barrel (111) and the radial magnetic force counteracting unit (2) and is used for adjusting the magnetic force action of the radial magnetic force counteracting unit (2) on the rotor (01) so that the radial magnetic force counteracting unit (2) counteracts the radial attraction of each magnetic pole of the rotor (01) on the stator (02);
the sensor unit (4) comprises n tile-shaped pressure sensors, the n tile-shaped pressure sensors are distributed between the motor to be disassembled and the inner barrel (111), and correspond to each magnetic pole of the rotor (01) one by one to form a barrel-shaped structure; transition fit is respectively formed between the tile-shaped pressure sensor and the inner barrel (111) and between the tile-shaped pressure sensor and a motor to be disassembled;
the axial magnetic force action unit (5) is arranged at the bottom of the bracket (11);
the magnetic force of the axial magnetic force action unit (5) is adjustable, and the rotor (01) is pushed out of the stator (02) through the repulsive force of the axial magnetic force action unit (5) to the rotor (01).
2. The rotor disassembling device according to claim 1, wherein:
the magnetism isolating unit (3) comprises a first barrel-shaped magnetism isolating sleeve;
the first barrel-shaped magnetism isolating sleeve can move along the axial direction.
3. The rotor disassembling device according to claim 1, wherein:
the magnetism isolating unit (3) comprises a plurality of radially superposed second barrel-shaped magnetism isolating sleeves;
the plurality of second barrel-shaped magnetism isolating sleeves can respectively move along the axial direction.
4. The rotor disassembling device according to claim 1, wherein:
the magnetism isolating unit (3) comprises a plurality of radially superposed third barrel-shaped magnetism isolating sleeves;
through holes are formed in the third barrel-shaped magnetic isolation sleeves and correspond to the through holes one to one;
the third barrel-shaped magnetism isolating sleeves can rotate respectively.
5. The rotor disassembling device according to claim 1, wherein:
the magnetism isolating unit (3) comprises n tile-shaped magnetism isolating sleeves;
the n tile-shaped magnetic isolation sleeves correspond to the magnetic poles of the rotor (01) one by one to form a barrel-shaped structure;
the n tile-shaped magnetic isolation sleeves can respectively move along the axial direction.
6. The rotor disassembling device according to any one of claims 1 to 5, wherein:
the axial magnetic force action unit (5) comprises at least one first cylindrical magnetic body assembly which is sequentially arranged along the axial direction, the first cylindrical magnetic body assembly comprises n first cylindrical magnetic bodies with fan-shaped cross sections, and the n first cylindrical magnetic bodies correspond to the magnetic poles of the rotor (01) one by one and are the same as the corresponding magnetic poles in polarity respectively.
7. The rotor disassembling device according to any one of claims 1 to 5, wherein:
the axial magnetic force action unit (5) comprises a cylindrical electromagnet assembly, the cylindrical electromagnet assembly comprises n cylindrical electromagnets with sector-shaped cross sections, and the n cylindrical electromagnets are in one-to-one correspondence with the magnetic poles of the rotor (01) and have the same polarity as the corresponding magnetic poles respectively.
8. The rotor disassembling device according to claim 7, wherein:
the columnar electromagnet comprises an iron core and a coil;
the winding resistance of the coil is 2.1-2.4 omega, the number of turns is 22-27, and the wire diameter is 0.29 mm.
9. The rotor disassembling device according to any one of claims 1 to 5, wherein:
the axial magnetic force acting unit (5) comprises a second cylindrical magnetic body assembly (51) and a sheet-shaped magnetism isolating sleeve (52);
the second cylindrical magnetic body assembly (51) comprises n second cylindrical magnetic bodies with sector-shaped cross sections, and the n second cylindrical magnetic bodies correspond to the magnetic poles of the rotor (01) one by one and have the same polarity as the corresponding magnetic poles respectively;
the sheet-shaped magnetic isolation sleeve (52) is positioned between the second cylindrical magnetic body assembly (51) and the rotor (01) and can move along the radial direction.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010886115.0A CN112223205B (en) | 2020-08-28 | 2020-08-28 | Rotor dismounting device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010886115.0A CN112223205B (en) | 2020-08-28 | 2020-08-28 | Rotor dismounting device |
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| CN112223205A CN112223205A (en) | 2021-01-15 |
| CN112223205B true CN112223205B (en) | 2022-04-12 |
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Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2884857B2 (en) * | 1991-10-09 | 1999-04-19 | 富士電機株式会社 | Rotor attachment / detachment device for permanent magnet synchronous machine |
| JP4496413B2 (en) * | 2006-05-24 | 2010-07-07 | 三菱電機株式会社 | Demagnetization device and method for permanent magnet motor |
| JP6484359B1 (en) * | 2018-01-30 | 2019-03-13 | 株式会社奥村商店 | Motor stator dismantling device |
| CN207994866U (en) * | 2018-03-26 | 2018-10-19 | 安徽江淮汽车集团股份有限公司 | Permanent-magnetic synchronous motor rotor disassembling fixture |
| CN208046407U (en) * | 2018-05-02 | 2018-11-02 | 孙磊 | A kind of provision for disengagement of large size traction electric machine rotor |
| CN210807030U (en) * | 2019-12-17 | 2020-06-19 | 天津市西青区华兴电机制造有限公司 | A fixture device for permanent-magnet machine assembly |
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