CN220985503U - Induction heating equipment and electric drive end cover press-fitting mechanism - Google Patents
Induction heating equipment and electric drive end cover press-fitting mechanism Download PDFInfo
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- CN220985503U CN220985503U CN202321774400.9U CN202321774400U CN220985503U CN 220985503 U CN220985503 U CN 220985503U CN 202321774400 U CN202321774400 U CN 202321774400U CN 220985503 U CN220985503 U CN 220985503U
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- induction heating
- end cover
- coil
- induction
- heating apparatus
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- 230000006698 induction Effects 0.000 title claims abstract description 113
- 238000010438 heat treatment Methods 0.000 title claims abstract description 56
- 238000009413 insulation Methods 0.000 claims description 11
- 239000002390 adhesive tape Substances 0.000 claims description 7
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 6
- 229910010293 ceramic material Inorganic materials 0.000 claims description 6
- 229910052802 copper Inorganic materials 0.000 claims description 6
- 239000010949 copper Substances 0.000 claims description 6
- 230000002035 prolonged effect Effects 0.000 abstract description 4
- 230000000694 effects Effects 0.000 description 7
- 230000002093 peripheral effect Effects 0.000 description 6
- 239000004020 conductor Substances 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 230000005856 abnormality Effects 0.000 description 2
- 230000005674 electromagnetic induction Effects 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000008094 contradictory effect Effects 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Classifications
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- 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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/25—Process efficiency
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- General Induction Heating (AREA)
Abstract
The utility model discloses induction heating equipment and an electric drive end cover press-fitting mechanism. The induction heating equipment comprises a power supply device, an induction coil and a shielding piece, wherein the induction coil is electrically connected with the power supply device; the shielding piece is arranged at the bottom of the induction coil. According to the utility model, the alternating magnetic field can be shielded through the shielding piece, so that the spring is prevented from being exposed to the alternating magnetic field, the risk caused by induction heating of the spring can be effectively reduced, and the service life of the spring is prolonged.
Description
Technical Field
The utility model relates to the technical field of electric drive manufacturing, in particular to induction heating equipment and an electric drive end cover press-fitting mechanism.
Background
Because the radial clearance exists in the rotor bearing of the motor, the rotor is subjected to axial electromagnetic force during electric drive operation, axial movement and abnormality are easy to cause, and in order to overcome the problem, a wave spring is arranged at the end of the electric drive bearing to provide pretightening force and compensate assembly tolerance for the electric drive bearing. Before the electrically driven rotor bearing is installed in the electrically driven end cover, the bearing chamber of the electrically driven end cover needs to be heated through induction to ensure that enough assembling clearance exists, and a wave spring is placed in the bearing chamber before heating.
In the related art, in the induction heating process, not only the bearing chamber is heated, but also the induction current can pass through the wave spring, so that the wave spring is heated together, the wave spring reaches extremely high instantaneous temperature, and the wave spring is blue and fragile and then fails.
Disclosure of utility model
The utility model mainly aims to provide induction heating equipment and an electric drive end cover press-fitting mechanism, which aim to reduce the risk caused by induction heating of a spring.
To achieve the above object, the induction heating apparatus of the present utility model comprises:
A power supply device;
the induction coil is electrically connected with the power supply device;
And the shielding piece is arranged on the induction coil.
In an embodiment of the utility model, the shielding member is made of ceramic material;
and/or the shield is in the shape of a circular sheet.
In an embodiment of the utility model, the induction heating apparatus further comprises a heat insulating sheet provided at a side of the shielding member facing away from the induction coil.
In an embodiment of the utility model, the heat insulation sheet is made of copper;
And/or the heat insulation sheet is in a disc shape.
In one embodiment of the utility model, the shielding piece is connected with the induction coil through a high-temperature-resistant adhesive tape;
and/or the shielding piece is connected with the heat insulation sheet through a high-temperature-resistant adhesive tape.
In one embodiment of the utility model, the induction coil comprises:
A connection portion electrically connected to the power supply device;
A coil part which is a cylindrical spiral coil and is connected to one end of the connecting part away from the power supply device; the shielding piece is arranged at one end of the coil part, which is far away from the connecting part.
In an embodiment of the present utility model, the connection part includes two connection members, one end of each of the connection members is connected to the power supply device, and the other end is connected to the coil part; wherein the power supply device and the coil part form a current loop through the two connectors.
In an embodiment of the utility model, the induction heating device further includes a driving module, and the power supply device is disposed on the driving module, and the driving module drives the power supply device to move so as to drive the induction coil to move.
In an embodiment of the utility model, the induction heating apparatus further comprises:
a driving module; and
The induction coil is connected to the sliding seat, and the sliding seat is connected to the driving module in a sliding manner;
The driving module drives the sliding seat to move so as to drive the induction coil to move.
The utility model also provides an electric drive end cover press-mounting mechanism, which comprises an end cover body and a spring, and is characterized in that the electric drive end cover press-mounting mechanism comprises:
An induction heating apparatus as described above; and
The end cover supporting device is used for supporting the end cover body; the induction coil of the induction heating device is arranged corresponding to the end cover body so as to heat the end cover body; the shield of the induction heating apparatus is disposed corresponding to the spring.
According to the technical scheme, alternating current is provided through the power supply device, the alternating current generates an alternating magnetic field with changed direction through the induction coil, induction heating can be carried out on a conductor positioned in the alternating magnetic field, and when the induction coil of the induction heating equipment carries out induction heating on the end cover body, as the induction coil is provided with the shielding piece, part of the alternating magnetic field can be shielded through the shielding piece, the area of the spring exposed to the alternating magnetic field is reduced, the risk caused by induction heating of the spring can be effectively reduced, and the service life of the spring is prolonged.
Drawings
In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, and it is obvious that the drawings in the following description are only some embodiments of the present utility model, and other drawings may be obtained according to the structures shown in these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic view showing the structure of an embodiment of an induction heating apparatus according to the present utility model.
Reference numerals illustrate:
| Reference numerals | Name of the name | Reference numerals | Name of the name |
| 1 | Power supply device | 2 | Induction coil |
| 21 | Connecting part | 211 | Connecting piece |
| 22 | Coil part | 3 | Shielding piece |
| 4 | Heat insulation sheet | 5 | Driving module |
The implementation, functional features and advantages of the present utility model will be further described with reference to the accompanying drawings in conjunction with the embodiments.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all embodiments of the utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
It should be noted that, if directional indications (such as up, down, left, right, front, and rear … …) are included in the embodiments of the present utility model, the directional indications are merely used to explain the relative positional relationship, movement conditions, etc. between the components in a specific posture (as shown in the drawings), and if the specific posture is changed, the directional indications are correspondingly changed.
In addition, if there is a description of "first", "second", etc. in the embodiments of the present utility model, the description of "first", "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In addition, the meaning of "and/or" as it appears throughout is meant to include three side-by-side schemes, for example, "a and/or B", including a scheme, or B scheme, or a scheme that is satisfied by both a and B. In addition, the technical solutions of the embodiments may be combined with each other, but it is necessary to base that the technical solutions can be realized by those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should be considered to be absent and not within the scope of protection claimed in the present utility model.
The electric drive, also called a motor, comprises a motor body and an electric drive end cover, wherein the electric drive body comprises a shell, a rotor, a motor shaft, a rotor bearing and other parts, the electric drive end cover comprises an end cover body and a spring, and the spring is usually a wave spring. The motor shaft is rotationally arranged in the mounting cavity, the rotor is sleeved on the motor shaft, the end cover body is provided with a shaft hole through which the motor shaft passes, a rotor bearing is sleeved on the motor shaft at a position corresponding to the end cover body, a bearing chamber for embedding the rotor bearing is arranged on one side of the end cover body facing the mounting cavity, and the rotor bearing is in interference fit with the side wall of the bearing chamber.
The wave spring is a part in an electric drive product, the compression amount is about 4mm, the working force of about 400N can be borne, the rotor can be subjected to axial electromagnetic force during electric drive operation due to the radial play of the rotor bearing, and axial play and abnormality are easy to cause.
The end cover body is usually pressed on the motor body through a pressing mechanism, and before the electric drive rotor bearing is installed on the electric drive end cover, the bearing chamber of the electric drive end cover needs to be heated through induction so as to ensure enough assembly clearance.
The wave spring is placed in the bearing chamber before induction heating, the electromagnetic induction is to generate an alternating magnetic field with the alternating current changing in direction through the heating coil, vortex current can appear in the conductor in the alternating magnetic field according to Faraday electromagnetic induction law, and the Joule thermal effect of the vortex current realizes heating. In the related art, the design purpose is to heat the bearing chamber only, but the actual bearing chamber is heated together with the wave spring, the induced current can pass through the wave spring, the instantaneous temperature on the wave spring can reach 800 ℃ at most, the wave spring piece is blue and fragile and then fails, and the rigidity of the wave spring is reduced by about 10% after abnormal heating.
The utility model provides induction heating equipment, which can reduce the area of a spring exposed to an alternating magnetic field, effectively reduce the risk caused by induction heating of the spring and prolong the service life of the spring.
In an embodiment of the present utility model, as shown in fig. 1, the induction heating apparatus includes a power supply device 1, an induction coil 2, and a shield 3, the induction coil 2 being electrically connected to the power supply device 1; the shield 3 is provided to the induction coil 2.
According to the technical scheme, alternating current is provided by the power supply device 1, the alternating current generates an alternating magnetic field with changed direction through the induction coil 2, so that conductors in the alternating magnetic field can be subjected to induction heating, when the induction coil 2 of the induction heating device carries out induction heating on the end cover body, as the induction coil 2 is provided with the shielding piece 3, part of the alternating magnetic field can be shielded by the shielding piece 3, the area of the spring exposed to the alternating magnetic field is reduced, the risk caused by induction heating of the spring can be effectively reduced, and the service life of the spring is prolonged.
In one embodiment of the present utility model, as shown in fig. 1, the shielding member 3 is made of a ceramic material.
The principle of shielding magnetic fields is to make use of the properties of certain materials, typically including metals such as iron, copper, aluminum, and certain alloys and ceramics, to counteract or attenuate the surrounding magnetic field. The shielding effect of the ceramic material is achieved by a specific chemical structure and crystal structure. The microstructure in the ceramic material is capable of counteracting external magnetic fields and absorbing, dissipating heat or reversing the magnetic fields. In this embodiment, since the shielding member 3 is directly connected to the induction coil 2, and the induction coil 2 is energized during operation, in order to avoid the induction heating involved in the energization of the shielding member 3, in this embodiment, a ceramic material with insulating properties is selected.
In one embodiment of the utility model, the shield 3 is in the form of a disc.
It will be appreciated that the shield 3 is connected to the bottom of the induction coil 2, the cylindrical bottom surface of the induction coil 2 is provided with the shield 3, in order to avoid collision between the shield 3 and the end cover body when the induction coil 2 enters the bearing chamber, the shield 3 is designed into a circular sheet shape adapted to the shape of the bottom of the induction coil 2, and the outer diameter of the shield 3 is smaller than or equal to the size of the bottom surface of the induction coil 2.
In order to facilitate the disassembly and assembly of the shielding member 3, in this embodiment, the shielding member 3 is connected with the induction coil 2 through a high-temperature resistant adhesive tape. The high temperature resistant adhesive tape is adhered to the peripheral side of the induction coil 2, the peripheral side of the shielding member 3, and the side of the shielding member 3 facing away from the induction coil 2.
In an embodiment of the utility model, as shown in fig. 1, the induction heating apparatus further comprises a heat insulating sheet 4, the heat insulating sheet 4 being provided on a side of the shielding 3 facing away from the induction coil 2. It will be appreciated that the heat shield 4 is designed to provide a heat insulating effect.
In an embodiment of the present utility model, as shown in fig. 1, the heat insulation sheet 4 is made of copper.
It can be appreciated that the heat insulating sheet 4 is made of copper, so that on one hand, the heat insulating effect can be achieved, on the other hand, the electromagnetic shielding effect can be further achieved, and because the heat insulating sheet 4 is arranged on one side of the shielding piece 3, which is away from the induction coil 2, the heat insulating sheet 4 made of copper cannot be electrified under the insulation effect of the shielding piece 3.
In one embodiment of the present utility model, as shown in fig. 1, the heat insulating sheet 4 is in a disc shape. In order to avoid collision of the heat insulating sheet 4 and the end cover body when the induction coil 2 enters the bearing chamber, the heat insulating sheet 4 is designed into a disc shape matched with the shape of the shielding piece 3, and the outer diameter of the heat insulating sheet 4 is smaller than or equal to the size of the shielding piece 3.
In order to facilitate the disassembly and assembly of the heat insulation sheet 4, in this embodiment, the shielding member 3 is connected with the heat insulation sheet 4 through a high temperature resistant adhesive tape. The high temperature resistant adhesive tape is adhered to the peripheral side of the induction coil 2, extends from the peripheral side of the induction coil 2, passes through the peripheral side of the shield 3, the peripheral side of the heat insulating sheet 4, and continues to extend to the side of the heat insulating sheet 4 facing away from the shield 3.
In an embodiment of the present utility model, as shown in fig. 1, the induction coil 2 includes a connection portion 21 and a coil portion 22, and the connection portion 21 is electrically connected to the power supply device 1; the coil part 22 is a cylindrical spiral coil, and the coil part 22 is connected to one end of the connection part 21 away from the power supply device 1; the shield 3 is provided at an end of the coil portion 22 remote from the connection portion 21.
It will be appreciated that the arrangement of the connection portion 21 such that the coil portion 22 is at a distance from the power supply device 1 facilitates the insertion of the coil portion 22 into the bearing chamber for induction heating.
In an embodiment of the present utility model, as shown in fig. 1, the connection part 21 includes two connection pieces 211, and one end of each connection piece 211 is connected to the power supply device 1, and the other end is connected to the coil part 22; wherein the power supply device 1 supplies alternating current, and the power supply device 1 and the coil part 22 form a current loop through the two connectors 211.
It will be appreciated that one connecting piece 211 is connected with the positive pole of the power supply device 1, the other connecting piece 211 is connected with the negative pole of the power supply device 1, the two connecting pieces 211 and the coil part 22 form a current loop, the power supply device 1 supplies alternating current, the alternating current flows through the induction coil 2 and generates an alternating magnetic field, when the coil part 22 is embedded into the bearing chamber, eddy currents are formed at the side wall of the bearing chamber, the eddy currents change electric energy into heat energy and heat the side wall of the bearing chamber, the side wall of the bearing chamber is heated and expanded, at the moment, the bearing can be conveniently embedded into the bearing chamber, after the side wall of the bearing chamber is cooled, the side wall of the bearing chamber is contracted, and then the bearing and the bearing chamber can be tightly matched, and by adopting the mode, the probability of damaging the end cover can be reduced to a certain extent.
In an embodiment of the utility model, as shown in fig. 1, the induction heating apparatus further includes a driving module 5, the power supply device 1 is disposed on the driving module 5, and the driving module 5 drives the power supply device 1 to move so as to drive the induction coil 2 to move.
It will be appreciated that when it is desired to embed the induction coil 2 into the bearing chamber, the drive module 5 provides power to drive the power supply device 1 to move to drive the induction coil 2 into the bearing chamber to heat the bearing chamber.
In another embodiment of the present utility model, as shown in fig. 1, the induction heating apparatus further comprises a driving module 5 and a sliding seat, wherein the induction coil 2 is connected to the sliding seat, and the sliding seat is slidably connected to the driving module 5; the driving module 5 drives the sliding seat to move so as to drive the induction coil 2 to move.
It will be appreciated that when it is desired to embed the induction coil 2 into the bearing chamber, the drive module 5 provides power to drive the slide to move and thus drive the induction coil 2 to move into the bearing chamber to heat the bearing chamber. In this embodiment, the induction coil 2 is electrically connected to the power supply device 1 by a non-rigid structure, for example by a cable, which is kept for a sufficient length.
The utility model also provides an electric drive end cover press-fitting mechanism, which comprises an end cover supporting device and induction heating equipment, wherein the specific structure of the induction heating equipment refers to the embodiment, and the electric drive end cover press-fitting mechanism adopts all the technical schemes of all the embodiments, so that the electric drive end cover press-fitting mechanism at least has all the beneficial effects brought by the technical schemes of the embodiments, and the specific structure of the induction heating equipment is not repeated herein. The end cover supporting device is used for supporting the end cover body; the induction coil 2 of the induction heating device is arranged corresponding to the end cover body so as to heat the end cover body; the shield 3 of the induction heating device is arranged in correspondence with the spring.
According to the utility model, the shielding piece and the heat insulation piece are designed, so that the wave spring can be effectively prevented from being heated by induction, the service life of the wave spring is prolonged, the input cost is reduced, the effect is obvious, and the working efficiency is improved. In one embodiment, the device is used to heat the bearing chamber to 100 ℃ and the peak temperature of the wave spring is no more than 80 ℃.
The foregoing description is only of the optional embodiments of the present utility model, and is not intended to limit the scope of the utility model, and all the equivalent structural changes made by the description of the present utility model and the accompanying drawings or the direct/indirect application in other related technical fields are included in the scope of the utility model.
Claims (10)
1. An induction heating apparatus, characterized in that the induction heating apparatus comprises:
A power supply device;
The induction coil is electrically connected with the power supply device; and
And the shielding piece is arranged on the induction coil.
2. The induction heating apparatus of claim 1, wherein the shield is a ceramic material;
and/or the shield is in the shape of a circular sheet.
3. The induction heating apparatus of claim 1, further comprising a thermal shield disposed on a side of said shield facing away from said induction coil.
4. The induction heating apparatus of claim 3, wherein the heat shield is copper;
And/or the heat insulation sheet is in a disc shape.
5. An induction heating apparatus as set forth in claim 3 wherein said shield is connected to said induction coil by a high temperature resistant tape;
and/or the shielding piece is connected with the heat insulation sheet through a high-temperature-resistant adhesive tape.
6. The induction heating apparatus of claim 1, wherein said induction coil comprises:
A connection portion electrically connected to the power supply device;
A coil part which is a cylindrical spiral coil and is connected to one end of the connecting part away from the power supply device; the shielding piece is arranged at one end of the coil part, which is far away from the connecting part.
7. The induction heating apparatus according to claim 6, wherein said connection portion includes two connection members, one end of each of said connection members being connected to said power supply device, and the other end being connected to said coil portion; wherein the power supply device and the coil part form a current loop through the two connectors.
8. The induction heating apparatus of any one of claims 1 to 7, further comprising a driving module, wherein the power supply device is provided to the driving module, and the driving module drives the power supply device to move so as to drive the induction coil to move.
9. The induction heating apparatus of any of claims 1 to 7, further comprising:
a driving module; and
The induction coil is connected to the sliding seat, and the sliding seat is connected to the driving module in a sliding manner;
The driving module drives the sliding seat to move so as to drive the induction coil to move.
10. An electric drive end cover pressure equipment mechanism, electric drive end cover includes end cover body and spring, its characterized in that, electric drive end cover pressure equipment mechanism includes:
An induction heating apparatus as claimed in any one of claims 1 to 9; and
The end cover supporting device is used for supporting the end cover body; the induction coil of the induction heating device is arranged corresponding to the end cover body so as to heat the end cover body; the shield of the induction heating apparatus is disposed corresponding to the spring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321774400.9U CN220985503U (en) | 2023-07-06 | 2023-07-06 | Induction heating equipment and electric drive end cover press-fitting mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321774400.9U CN220985503U (en) | 2023-07-06 | 2023-07-06 | Induction heating equipment and electric drive end cover press-fitting mechanism |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220985503U true CN220985503U (en) | 2024-05-17 |
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ID=91062531
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321774400.9U Active CN220985503U (en) | 2023-07-06 | 2023-07-06 | Induction heating equipment and electric drive end cover press-fitting mechanism |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220985503U (en) |
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2023
- 2023-07-06 CN CN202321774400.9U patent/CN220985503U/en active Active
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