CN116495653A - Motor axial magnetic flux brake and motor manufactured by same - Google Patents
Motor axial magnetic flux brake and motor manufactured by same Download PDFInfo
- Publication number
- CN116495653A CN116495653A CN202310752896.8A CN202310752896A CN116495653A CN 116495653 A CN116495653 A CN 116495653A CN 202310752896 A CN202310752896 A CN 202310752896A CN 116495653 A CN116495653 A CN 116495653A
- Authority
- CN
- China
- Prior art keywords
- motor
- brake
- magnetic flux
- magnetism
- friction
- 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
Links
- 230000004907 flux Effects 0.000 title claims abstract description 46
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 19
- 230000005389 magnetism Effects 0.000 claims description 10
- 230000006835 compression Effects 0.000 claims description 8
- 238000007906 compression Methods 0.000 claims description 8
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 3
- 229910052782 aluminium Inorganic materials 0.000 claims description 3
- 239000002131 composite material Substances 0.000 claims description 3
- 239000002783 friction material Substances 0.000 claims description 3
- 238000003475 lamination Methods 0.000 abstract description 8
- 230000000694 effects Effects 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 3
- 238000009826 distribution Methods 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000000149 penetrating effect Effects 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 239000010963 304 stainless steel Substances 0.000 description 1
- 229910000589 SAE 304 stainless steel Inorganic materials 0.000 description 1
- 230000004323 axial length Effects 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 238000003801 milling Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66D—CAPSTANS; WINCHES; TACKLES, e.g. PULLEY BLOCKS; HOISTS
- B66D5/00—Braking or detent devices characterised by application to lifting or hoisting gear, e.g. for controlling the lowering of loads
- B66D5/02—Crane, lift hoist, or winch brakes operating on drums, barrels, or ropes
- B66D5/12—Crane, lift hoist, or winch brakes operating on drums, barrels, or ropes with axial effect
- B66D5/14—Crane, lift hoist, or winch brakes operating on drums, barrels, or ropes with axial effect embodying discs
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66D—CAPSTANS; WINCHES; TACKLES, e.g. PULLEY BLOCKS; HOISTS
- B66D1/00—Rope, cable, or chain winding mechanisms; Capstans
- B66D1/02—Driving gear
- B66D1/12—Driving gear incorporating electric motors
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66D—CAPSTANS; WINCHES; TACKLES, e.g. PULLEY BLOCKS; HOISTS
- B66D5/00—Braking or detent devices characterised by application to lifting or hoisting gear, e.g. for controlling the lowering of loads
- B66D5/02—Crane, lift hoist, or winch brakes operating on drums, barrels, or ropes
- B66D5/24—Operating devices
- B66D5/30—Operating devices electrical
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/64—Electric machine technologies in electromobility
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)
Abstract
The invention relates to a motor axial magnetic flux brake and a motor manufactured by the motor axial magnetic flux brake, wherein the motor axial magnetic flux brake is hollow, a rotating shaft of the motor passes through the hollow part of the motor axial magnetic flux brake, the motor axial magnetic flux brake is connected with the rotating shaft of the motor through a flat key, the motor axial magnetic flux brake comprises a non-magnetic lamination body, the non-magnetic lamination body is connected with the rotating shaft of the motor through a spline, a pit is arranged at the outer side of the non-magnetic lamination body, and a magnetic iron core is fixed in the pit. Compared with the prior art, the invention has the technical effects that the armature plate is connected with the rotating shaft through the spline, and the actuation and release of the brake are realized through the axial movement of the armature plate on the rotating shaft.
Description
Technical Field
The invention relates to a motor axial magnetic flux brake for a crane electric hoist lifting motor and a motor manufactured by the motor axial magnetic flux brake.
Background
The wire rope electric hoist lifting motor brake is mostly a DC power supply electric disk brake, see patent document with publication number CN 104817026A.
The brake is arranged at the non-shaft extension end of the motor, so that the overall axial dimension of the motor is longer; the brake uses a single exciting coil (the exciting coil and the coil of the motor are two coils) to generate magnetic flux, so that the overall mass of the motor is increased; the direct current power supply is supplied by external alternating current through a rectifier, so that fault links are increased.
The problems are: how to invent a new brake, which does not depend on direct current power supply any more.
Disclosure of Invention
The invention aims to solve the technical problems: how to design an axial magnetic flux brake of a motor, one coil is reduced, and direct current power supply is not relied on any more.
The technical scheme of the invention is as follows:
the motor axial magnetic flux brake comprises a nonmagnetic laminated body and a motor rotating shaft, wherein the nonmagnetic laminated body is connected with the motor rotating shaft through a spline, a pit is arranged on the outer side of the nonmagnetic laminated body, a magnetic iron core is fixed in the pit, a nonmagnetic end plate A is fixed at one end of the nonmagnetic laminated body, which is close to a rotor, the nonmagnetic laminated body and an armature plate are fixed together through nonmagnetic iron core rivets, the nonmagnetic iron core rivets penetrate through holes of the nonmagnetic laminated body, nonmagnetic end plates B are fixed between the nonmagnetic laminated body and the armature plate, the magnetic iron core is in contact with the armature plate, the armature plate is fixed with the friction plate A, the friction plate B is arranged on the right side of the friction plate A, the surface, which is in contact with the friction plate B, is a braking surface, and the hollow part of the magnetic iron core is provided with a compression spring.
The braking surface is made of composite friction materials.
The armature plate and the friction plate a are fixed together by a plurality of fastening screws.
The motor comprises an annular motor stator, a motor rotor made of cast aluminum is arranged in the motor stator in a penetrating way, the right end part of the motor stator extends outwards to form a motor stator extension part, the motor stator extension part is internally provided with the motor axial magnetic flux brake in a penetrating way, the motor axial magnetic flux brake is connected with a rotating shaft of the motor through a flat key, the motor axial magnetic flux brake is connected with the rotating shaft of the motor through a spline, and a friction disc B is fixed on the motor stator or a motor shell.
Compared with the prior art, the invention has the technical effects that the armature plate is connected with the rotating shaft through the spline, and the actuation and release of the brake are realized through the axial movement of the armature plate on the rotating shaft.
Drawings
Fig. 1 is a schematic cross-sectional view of the present invention.
Fig. 2 is a schematic diagram of the distribution of magnetic lines of force according to the present invention.
Fig. 3 is a left side view of the distribution of magnetic lines of force at the rotor of fig. 2.
Fig. 4 is a schematic left-hand view of the distribution of magnetic lines of force at the magnetic core of fig. 2.
Fig. 5 is a schematic view of an electric machine axial flux brake according to the present invention.
Fig. 6 is a schematic view of fig. 5 with one of the magnetic cores 5 removed.
Detailed Description
The invention will be described in detail below with reference to the drawings and detailed description thereof.
Referring to fig. 1, a motor includes a ring-shaped motor stator 51 (only an upper portion of the motor stator 51 is shown in fig. 1, and a lower portion thereof is omitted), a motor rotor 50 made of cast aluminum is inserted into the motor stator 51, a right side end portion of the motor stator 51 is extended outwardly to form a motor stator extension 511, and a motor axial flux brake is inserted into the motor stator extension 511.
The motor axial magnetic flux brake comprises a nonmagnetic laminated body 1, wherein the nonmagnetic laminated body 1 is connected with the motor rotating shaft through a spline, a pit 12 is arranged on the outer side of the nonmagnetic laminated body 1, a magnetic iron core 5 is fixed in the pit 12, one end of the nonmagnetic laminated body 1 close to a rotor is fixed with a nonmagnetic end plate A4, the nonmagnetic laminated body 1 and an armature disc 6 are fixed together through nonmagnetic iron core rivets 3, the nonmagnetic iron core rivets 3 penetrate through holes 11 of the nonmagnetic laminated body 1, a nonmagnetic end plate B7 is fixed between the nonmagnetic laminated body 1 and the armature disc 6, and the magnetic iron core 5 is in contact with the armature disc 6.
The armature plate 6 is fixed with the friction plate A9, a friction plate B (not shown in fig. 1) is arranged on the right side of the friction plate A9, and the surface of the friction plate A9, which is contacted with the friction plate B, is a braking surface 10.
The hollow part of the magnetic core 5 is provided with a compression spring 2.
For wear resistance, the braking surface 10 is made of a composite friction material.
For the purpose of fastening, the armature plate 6 and the friction plate A9 are fastened together by means of a plurality of fastening screws 8.
The working principle is as follows:
during processing, the method comprises the following steps: the axial magnetic flux brake adopts a split assembly structure, the rotor non-magnetic conductive punching sheet is formed by overlapping after being punched by a 304 stainless steel plate, the axial magnetic flux iron core is finished in a casting or machining mode, and the armature disc groove is finished through milling.
In the mounting, as shown in fig. 1, the friction disk B is fixed to the motor stator 51 or the motor case, and the rotation shaft of the motor is inserted through the hollow portion of the magnetic core 5 (or the nonmagnetic lamination body 1), the hollow portion in the compression spring 2, and the hollow portion in the armature disk 6.
The axial magnetic flux brake is taken as a single part to be arranged on a motor rotor, an inner hole is arranged on a rotating shaft, a shaft shoulder props against the end face of the brake to prevent axial movement, and radial positioning of the brake is realized through a flat key; the armature plate is connected with the rotating shaft through a spline, and the attraction and release of the brake are realized through the axial movement of the armature plate on the rotating shaft.
The method comprises the following steps: after the installation, under the promotion of compression spring 2, the non-magnetism lamination body 1 moves right with the whole of magnetism iron core 5, armature dish 6, friction disc A9, and friction disc A9 contacts with friction disc B, is in the braking state, and friction disc A9 is slowed down because of friction disc B, because key connection relation, and motor shaft (including motor rotor) also slows down.
When the motor is energized, referring to fig. 2-3, the motor rotor 50 starts to rotate under electromagnetic action, and the magnetic core 5 and the non-magnetic lamination body 1, the armature plate 6, and the friction plate A9 are integrally rotated with the motor rotor 50 (also a rotating shaft) due to the key connection.
Meanwhile, referring to fig. 2-4, because the rotor yoke and both ends are not magnetically conductive, at this time, the original radial magnetic flux at the motor stator extension 511 turns around and enters the armature plate 6 at a position close to the rotor, so that the armature plate 6 becomes a part of the magnetic circuit of the motor rotor, and the radial magnetic flux J (two radial magnetic fluxes J in fig. 2 should be overlapped together, and are drawn as two lines for convenience of view) becomes the axial magnetic flux Z. At this time, under the action of the magnetic force of the axial magnetic flux Z, the magnetic iron core 5 moves leftwards together with the nonmagnetic lamination body 1, the armature plate 6 and the friction plate A9, the friction plate A9 is gradually separated from the friction plate B, the compression spring 2 is compressed to be shorter, the brake is released, and the friction plate B does not influence the motor rotating shaft (including the motor rotor) any more, so that the motor works normally.
When the motor is powered off, the magnetic force action of the axial magnetic flux Z disappears, the magnetic iron core 5 moves rightwards together with the nonmagnetic lamination body 1, the armature plate 6 and the friction plate A9 under the pushing of the compression spring 2, the friction plate A9 contacts with the friction plate B, and the brake is in a braking state, so that the motor rotating shaft (comprising a motor rotor) is gradually decelerated as described above.
Referring to fig. 2, the left-hand portion of fig. 2 (fig. 3 is a left-hand view of the portion) is a schematic diagram of the magnetic flux generated by the motor coil, which is in a plane perpendicular to the axial direction of the motor shaft, and which drives the normal operation of the motor.
Referring to fig. 2, the right part of fig. 2 (fig. 4 is a left view of the part) is a schematic diagram of magnetic flux generated by a motor coil, the magnetic flux is in an L shape as a whole, a part (see reference character J) of the magnetic flux is distributed on a plane perpendicular to the axial direction of a motor rotating shaft, another part (see reference character Z, the specification is called axial magnetic flux) of the magnetic flux is distributed on a plane parallel to the axial direction of the motor rotating shaft, the axial magnetic flux is distributed along the axial direction of the motor rotating shaft, and the axial magnetic flux is exactly consistent with the direction of a friction disc (namely the friction disc A9) of a brake, so that the position of the friction disc A9 can be controlled by the axial magnetic flux, and one coil (namely an exciting coil in the background art) can be reduced.
The invention is characterized in that:
s1, the invention aims to overcome the defect that an electromagnetic brake is adopted by a steel wire rope electric hoist, and discloses a brake integrated with a steel wire rope electric hoist driving motor, so that the brake and the motor are of an integrated structure, the motor volume is reduced, the motor axial length is reduced, the fault links are reduced, and the aim of braking safety and reliability is fulfilled.
S2, the radial magnetic flux of the motor is converted into the axial magnetic flux, so that the brake armature plate is used as a part of a magnetic circuit of the motor, and can be used as a brake or can improve torque of a motor shaft. The working principle is that a motor is electrified and a brake is attracted; the motor is powered off, the brake is released, and the motor is braked safely.
See the prior art for further content.
The foregoing is merely a preferred embodiment of the present invention, and it should be noted that it will be apparent to those skilled in the art that several changes and modifications can be made without departing from the general inventive concept, and these should also be regarded as the scope of the invention.
Claims (4)
1. An axial flux brake for an electric machine, characterized by: the inside is hollow, the pivot of motor passes from the cavity of this motor axial magnetic flux stopper, and pass through parallel key connection between the pivot of motor axial magnetic flux stopper and motor, pass through spline connection between non-magnetism fold lamellar body (1) and the pivot of motor, the outside of non-magnetism fold lamellar body (1) is equipped with pit (12), pit (12) internal fixation magnetism iron core (5), non-magnetism fold lamellar body (1) are close to the fixed non-magnetic conduction end plate A (4) of rotor, non-magnetism fold lamellar body (1) and armature dish (6) are in the same place through non-magnetic conduction iron core rivet (3), pass in non-magnetic conduction iron core rivet (3) follow through-hole (11) of non-magnetism fold lamellar body (1), fixed non-magnetic conduction end plate B (7) between non-magnetism fold lamellar body (1) and the armature dish (6), magnetism iron core (5) and armature dish (6) contact, armature dish (6) are together fixed with friction dish A (9), the right side of friction dish A (9) is equipped with friction dish B, friction dish A (9) are in contact with the mutual surface (10), the compression surface (2) is equipped with the compression spring core.
2. The motor axial flux brake of claim 1, wherein: the braking surface (10) is made of a composite friction material.
3. The motor axial flux brake of claim 2, wherein: the armature plate (6) and the friction plate A (9) are fixed together by a plurality of fastening screws (8).
4. The utility model provides a motor, includes annular motor stator (51), wears to establish motor rotor (50) that cast aluminum made in motor stator (51), and the right side tip of motor stator (51) outwards extends and forms motor stator extension (511), its characterized in that: the motor axial magnetic flux brake of claim 3 is penetrated in the motor stator extension part (511), the motor axial magnetic flux brake is connected with the rotating shaft of the motor through a flat key, the magnetic iron core (5) is connected with the rotating shaft of the motor through a spline, and the friction disc B is fixed on the motor stator (51) or the motor shell.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310752896.8A CN116495653A (en) | 2023-06-26 | 2023-06-26 | Motor axial magnetic flux brake and motor manufactured by same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310752896.8A CN116495653A (en) | 2023-06-26 | 2023-06-26 | Motor axial magnetic flux brake and motor manufactured by same |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN116495653A true CN116495653A (en) | 2023-07-28 |
Family
ID=87325066
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310752896.8A Pending CN116495653A (en) | 2023-06-26 | 2023-06-26 | Motor axial magnetic flux brake and motor manufactured by same |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN116495653A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB624735A (en) * | 1945-08-31 | 1949-06-15 | Garrett Corp | Motor having an electromagnetic brake |
| GB1165186A (en) * | 1966-12-01 | 1969-09-24 | Indive Gmbh | Improvements in or relating to Electric Motors |
| DE19503594A1 (en) * | 1994-02-14 | 1995-08-17 | Siemens Ag | Squirrel-cage rotor induction motor with electromagnetic spring pressure brake |
| CN2207657Y (en) * | 1993-10-30 | 1995-09-13 | 冶金工业部自动化研究院 | Protective brake when cut off of electricity |
| CN101033782A (en) * | 2006-03-08 | 2007-09-12 | 康卓彬德电磁技术有限公司 | Spring brake with a brake disk with friction surfaces with sides facing away from each other |
-
2023
- 2023-06-26 CN CN202310752896.8A patent/CN116495653A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB624735A (en) * | 1945-08-31 | 1949-06-15 | Garrett Corp | Motor having an electromagnetic brake |
| GB1165186A (en) * | 1966-12-01 | 1969-09-24 | Indive Gmbh | Improvements in or relating to Electric Motors |
| CN2207657Y (en) * | 1993-10-30 | 1995-09-13 | 冶金工业部自动化研究院 | Protective brake when cut off of electricity |
| DE19503594A1 (en) * | 1994-02-14 | 1995-08-17 | Siemens Ag | Squirrel-cage rotor induction motor with electromagnetic spring pressure brake |
| CN101033782A (en) * | 2006-03-08 | 2007-09-12 | 康卓彬德电磁技术有限公司 | Spring brake with a brake disk with friction surfaces with sides facing away from each other |
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| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |