CN203747604U - Three-section rotary shaft structure of high-speed permanent magnet synchronous motor - Google Patents
Three-section rotary shaft structure of high-speed permanent magnet synchronous motor Download PDFInfo
- Publication number
- CN203747604U CN203747604U CN201320730518.1U CN201320730518U CN203747604U CN 203747604 U CN203747604 U CN 203747604U CN 201320730518 U CN201320730518 U CN 201320730518U CN 203747604 U CN203747604 U CN 203747604U
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- rotary shaft
- shaft body
- groove
- synchronous motor
- speed permanent
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Abstract
The utility model discloses a three-section rotary shaft structure of a high-speed permanent magnet synchronous motor. The three-section rotary shaft structure includes a first rotary shaft body, a second rotary shaft body and a third rotary shaft body. Two ends of the second rotary shaft body are provided with a first boss and a second boss respectively. The first rotary shaft body is provided with a first groove. The third rotary shaft body is provided with a second groove. The first boss is inserted in the first groove. The second boss is inserted in the second groove. The first rotary body and the second rotary body are made of low-magnetic high-strength stainless steel developed by Shanghai Research Institute of Materials and the second rotary body is made of No.20 low-carbon steel. The three-section rotary shaft structure is suitable for the high-speed permanent magnet synchronous motor. A condition that a spindle breaks due to motor rotor resonance when the motor is rotating at a high speed can be avoided.
Description
Technical field
The utility model relates to a kind of pivot structure, particularly relates to three sections of pivot structures of a kind of high-speed permanent magnetic synchronous motor.
Background technology
Synchronous machine is the same with induction machine is a kind of conventional alternating current machine.High-speed permanent magnetic synchronous motor is a kind of novel high-efficiency and energy-saving product, it possess the shape of high stability, high efficiency, simple in structure, motor and size can be versatile and flexible etc. remarkable advantage.
The patent No. is that the Chinese patent of CN201210422764.0 discloses a kind of machine shaft, comprise columniform main body, the cross-sectional diameter at described main body two ends is less than the cross-sectional diameter of interlude, on the end face of main body one end, have and the installing hole of main body concentric, on the axial plane of the main body other end, have vertical with main body axle center and through the pin-and-hole in main body axle center; Described main body interlude has location notch, and main body interlude edge is provided with inner shield ring, by the way, simple in structure, cost of manufacture is low, mechanical efficiency is high, stressed evenly, not yielding.Above-mentioned motor, in High Rotation Speed situation, can cause rotor to occur resonance rotating shaft phenomenon of rupture.
Summary of the invention
Technical problem to be solved in the utility model is to provide three sections of pivot structures of a kind of high-speed permanent magnetic synchronous motor, and its applicable high-speed permanent magnetic synchronous motor avoids motor in High Rotation Speed situation, causes rotor to occur resonance rotating shaft phenomenon of rupture.
The utility model solves above-mentioned technical problem by following technical proposals: three sections of pivot structures of a kind of high-speed permanent magnetic synchronous motor, it is characterized in that, it comprises the first rotary shaft body, the second rotary shaft body, the 3rd rotary shaft body, the two ends of described the second rotary shaft body are respectively equipped with the first projection and the second projection, the first rotary shaft body is provided with the first groove, the 3rd rotary shaft body is provided with the second groove, the first projection is inserted in the first groove, the second projection is inserted in the second groove, the material of the first rotary shaft body, the material of the 3rd rotary shaft body all adopts the low magnetic high-strength stainless steel of A18 type, the material of the second rotary shaft body adopts No. 20 mild steel.
Preferably, the width of the width of described the first rotary shaft body, the 3rd rotary shaft body is all less than the width of the second rotary shaft body.
Preferably, the length of described the first rotary shaft body is identical with the length of the 3rd rotary shaft body.
Positive progressive effect of the present utility model is: the utility model is applicable to high-speed permanent magnetic synchronous motor, avoids motor in High Rotation Speed situation, causes rotor to occur resonance rotating shaft phenomenon of rupture.
Brief description of the drawings
Fig. 1 is the structural representation of three sections of pivot structures of a kind of high-speed permanent magnetic synchronous motor of the utility model.
Embodiment
Provide the utility model preferred embodiment below in conjunction with accompanying drawing, to describe the technical solution of the utility model in detail.
As shown in Figure 1, three sections of pivot structures of the utility model high-speed permanent magnetic synchronous motor comprise the first rotary shaft body 1, the second rotary shaft body 2, the 3rd rotary shaft body 3, the material of the first rotary shaft body 1, the material of the 3rd rotary shaft body 3 all adopt the low magnetic high-strength stainless steel of A18 type of Shanghai investigation of materials institute research and development, and the material of the second rotary shaft body 2 adopts No. 20 mild steel; The two ends of the second rotary shaft body 2 are respectively equipped with the first projection 4 and the second projection 5, the first rotary shaft body 1 is provided with the first groove 11, the 3rd rotary shaft body 3 is provided with the second groove 31, the first projection 4 is inserted in the first groove 11, the second projection 5 is inserted in the second groove 31, realize like this interference fit, it is firm to connect.The width of the first rotary shaft body 1, the width of the 3rd rotary shaft body 3 are all less than the width of the second rotary shaft body 2.The length of the first rotary shaft body 1 is identical with the length of the 3rd rotary shaft body 3.
The utility model adopts the low magnetic high-strength stainless steel of A18 type, can prevent in machine operation process that cutting magnetic line produces weak current and eddy current loss, cause rotor to occur resonance rotating shaft phenomenon of rupture, thereby affect the working condition of motor.The said structure that the utility model adopts, owing to comparing with general rotor structure, rotating shaft is divided into three sections by it, adopt interference to be connected to master, in addition pin connects auxiliary connection scheme, so just can make motor stable operation under high-speed case, avoids accident to occur, meanwhile reduce motor eddy current loss energy-conservation, raise the efficiency.And further verify its fail safe and feasibility by finite element software ANSYS checkout result---under 0.11mm interference fit condition, maximum stress value is about 350MPa, be positioned at chamfering place, composition surface, external member integrated stress level is lower, be about 150MPa left and right, only on mating surface top layer and chamfering place exist larger stress, coefficient of safety is 1.3; Under pin condition of contact, maximum stress is 158.8MPa, is positioned at pin chamfering place, and the integrated stress level of pin is lower, and shear surface place stress is about 81MPa left and right, and coefficient of safety is 7, wherein pin material selection 1Cr11Ni2W2MoV high-strength steel.
Above-described specific embodiment; technical problem, technical scheme and beneficial effect to solution of the present utility model further describe; institute is understood that; the foregoing is only specific embodiment of the utility model; be not limited to the utility model; all within spirit of the present utility model and principle, any amendment of making, be equal to replacement, improvement etc., within all should being included in protection range of the present utility model.
Claims (1)
1. three sections of pivot structures of a high-speed permanent magnetic synchronous motor, it is characterized in that, it comprises the first rotary shaft body, the second rotary shaft body, the 3rd rotary shaft body, the two ends of described the second rotary shaft body are respectively equipped with the first projection and the second projection, the first rotary shaft body is provided with the first groove, the 3rd rotary shaft body is provided with the second groove, the first projection is inserted in the first groove, the second projection is inserted in the second groove, the material of the first rotary shaft body, the material of the 3rd rotary shaft body all adopts the low magnetic high-strength stainless steel of A18 type of Shanghai investigation of materials institute research and development, the material of the second rotary shaft body adopts No. 20 mild steel, the width of described the first rotary shaft body, the width of the 3rd rotary shaft body is all less than the width of the second rotary shaft body, the length of described the first rotary shaft body is identical with the length of the 3rd rotary shaft body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320730518.1U CN203747604U (en) | 2013-11-19 | 2013-11-19 | Three-section rotary shaft structure of high-speed permanent magnet synchronous motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320730518.1U CN203747604U (en) | 2013-11-19 | 2013-11-19 | Three-section rotary shaft structure of high-speed permanent magnet synchronous motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203747604U true CN203747604U (en) | 2014-07-30 |
Family
ID=51347359
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320730518.1U Withdrawn - After Issue CN203747604U (en) | 2013-11-19 | 2013-11-19 | Three-section rotary shaft structure of high-speed permanent magnet synchronous motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203747604U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103595211A (en) * | 2013-11-19 | 2014-02-19 | 江苏航天动力机电有限公司 | High-speed permanent magnet synchronous motor three-section rotary shaft structure |
-
2013
- 2013-11-19 CN CN201320730518.1U patent/CN203747604U/en not_active Withdrawn - After Issue
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103595211A (en) * | 2013-11-19 | 2014-02-19 | 江苏航天动力机电有限公司 | High-speed permanent magnet synchronous motor three-section rotary shaft structure |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20140730 Effective date of abandoning: 20160817 |
|
| C25 | Abandonment of patent right or utility model to avoid double patenting |