CN114337054A - Motor capable of resisting high-overload axial impact load - Google Patents
Motor capable of resisting high-overload axial impact load Download PDFInfo
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- CN114337054A CN114337054A CN202111505674.3A CN202111505674A CN114337054A CN 114337054 A CN114337054 A CN 114337054A CN 202111505674 A CN202111505674 A CN 202111505674A CN 114337054 A CN114337054 A CN 114337054A
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Abstract
The invention provides a motor capable of resisting high overload axial impact load, which comprises: the stator assembly comprises a shell, a stator assembly, an end cover and a rotor assembly; the shell is of a cylindrical structure, one end of the shell is opened, the other end of the shell is provided with a first bearing chamber, and the inner side of the first bearing chamber is provided with a first bearing; the stator assembly is arranged on the inner side of the shell, and an elastic cylindrical pin is arranged between the stator assembly and the shell; the end cover is arranged at the opening end of the shell, a second bearing chamber is arranged on the inner side of the end cover, a second outer circular surface and a second inner circular surface are arranged at the bottom of the second bearing chamber, a second bearing is arranged on the inner side of the second bearing chamber, an outer ring of the second bearing abuts against the second outer circular surface, and the height difference between the second outer circular surface and the second inner circular surface is smaller than the axial play of the second bearing; the rotor assembly penetrates through the interior of the stator assembly, two ends of the rotor assembly respectively penetrate through the first bearing and the second bearing, and directly or indirectly respectively abut against the inner ring of the first bearing and the inner ring of the second bearing through shaft shoulders at the two ends.
Description
Technical Field
The invention relates to the technical field of motors, in particular to a motor capable of resisting high-overload axial impact load.
Background
With the rapid development of scientific technology, in the future local war, the competition of the abstinence right is often the key point for determining the victory or defeat of the two parties in the war. The air-to-air missile is a main weapon competing for air control and air countermeasures due to the characteristics of small volume, light weight and flexibility. And the steering engine is used as an actuating mechanism of the missile system, and higher requirements are provided for the performance of the steering engine. The missile control system not only needs to execute corresponding actions according to commands of the controller and adjust the flight attitude of the missile, but also needs to reliably work under the external high-strength impact vibration condition and ensure that the missile can be accurately and effectively struck in the complex environment working condition. Therefore, the motor which is light in weight, resistant to high-strength impact vibration and adaptable to complex environment working conditions is researched, and the motor has great significance for ensuring effective attack of the missile and competing for the air control right.
Disclosure of Invention
In view of the above, it is an object of the present invention to provide an electrical machine that is resistant to high overload axial impact loads, for overcoming the above problems or at least partially solving or alleviating the above problems.
The invention provides a motor capable of resisting high overload axial impact load, which comprises:
the bearing comprises a shell, a bearing seat and a bearing seat, wherein the shell is of a cylindrical structure, one end of the shell is opened, the other end of the shell is provided with a first bearing chamber, and a first bearing is arranged on the inner side of the first bearing chamber;
the stator assembly is arranged on the inner side of the shell, and an elastic cylindrical pin is arranged between the stator assembly and the shell;
the end cover is arranged at the opening end of the shell, a second bearing chamber is arranged on the inner side of the end cover, a second outer circular surface and a second inner circular surface are arranged at the bottom of the second bearing chamber, an annular step is formed between the second outer circular surface and the second inner circular surface, a second bearing is arranged on the inner side of the second bearing chamber, an outer ring of the second bearing abuts against the second outer circular surface, and the height difference between the second outer circular surface and the second inner circular surface is smaller than the axial play of the second bearing;
the rotor assembly penetrates through the interior of the stator assembly, two ends of the rotor assembly respectively penetrate through the first bearing and the second bearing, and a shaft shoulder of the rotor assembly directly or indirectly respectively abuts against the inner ring of the first bearing and the inner ring of the second bearing.
The invention also has the following optional features.
Optionally, an inner race spacer is disposed between the shoulder of the rotor assembly and the inner race of the second bearing.
Optionally, the bottom of the first bearing chamber is a plane, an outer ring gasket is arranged at the bottom of the first bearing chamber, an outer ring of the first bearing abuts against the outer ring gasket, and the thickness of the outer ring gasket is smaller than the axial play of the first bearing.
Optionally, the bottom of the first bearing chamber is provided with a first outer circular surface and a first inner circular surface, the outer ring of the first bearing abuts against the first outer circular surface, and the height difference between the first outer circular surface and the first inner circular surface is smaller than the axial play of the first bearing.
Optionally, the end cap is nested within the open end of the housing with a solid cylindrical pin disposed between the end cap and the side wall of the housing.
Optionally, the magnetic motor further comprises a position magnetic steel assembly and a Hall plate assembly, the Hall plate assembly is arranged on the outer side of the end cover, and the position magnetic steel assembly is assembled at one end, penetrating through the rotating shaft of the end cover, of the rotor assembly.
Optionally, a counter bore is arranged in the middle of the position magnetic steel assembly, the counter bore is matched with the end of the rotating shaft of the rotor assembly, and the counter bore is connected to the end of the rotating shaft of the rotor assembly through a screw, an elastic pad and a flat pad.
Optionally, the end cover further comprises a tail cover, and the tail cover penetrates through the hall plate assembly through an axial screw to be connected with the end cover.
The motor capable of resisting the high-overload axial impact load has the following beneficial effects:
compared with a common motor, the motor can resist high overload axial impact load;
secondly, static parts and components of the motor are fixedly connected into a whole, and compared with a common motor, the motor can resist radial impact load to a certain degree;
and thirdly, on the premise of not greatly changing the structure of the conventional motor, the purposes of compact structure of the motor and high overload impact resistance can be realized only by designing a step surface with a quantitative height difference generated by a bearing chamber, selecting a large-clearance bearing and controlling the axial clearance of the motor.
Drawings
FIG. 1 is a schematic cross-sectional view of a motor of the present invention that is resistant to high overload axial impact loads;
FIG. 2 is an enlarged partial view of FIG. 1 at A;
FIG. 3 is an enlarged partial block diagram of one embodiment at B in FIG. 1;
fig. 4 is a partially enlarged structural view of another embodiment at B in fig. 1.
In the above figures: 1 a second bearing; 2, a stator component; 3, elastic cylindrical pins; 4, an outer ring gasket; 5, a shell; 501 a first bearing chamber; 502 a first outer circular surface; 503 a first inner circular surface; 6 a rotor assembly; 7, inner ring gaskets; 8, end covers; 801 a second bearing chamber; 802 a second outer circular surface; 803 a second inner circular surface; 9 solid cylindrical pins; 10, a Hall plate assembly; 11, a tail cover; 12, a screw; 13 elastic cushion; 14, flat cushion; 15 position magnetic steel component; 16 first bearing.
The present invention will be described in further detail with reference to the accompanying drawings and examples.
Detailed Description
Example 1
Referring to fig. 1 and 2, an embodiment of the present invention provides an electric machine capable of resisting a high overload axial impact load, including: the housing 5, the stator assembly 2, the end cap 8 and the rotor assembly 6; the housing 5 is of a cylindrical structure, one end of the housing 5 is open, the other end of the housing is provided with a first bearing chamber 501, and the inner side of the first bearing chamber 501 is provided with a first bearing 16; the stator assembly 2 is arranged on the inner side of the shell 5, and an elastic cylindrical pin 3 is arranged between the stator assembly 2 and the shell 5; the end cover 8 is arranged at the opening end of the shell 5, a second bearing chamber 801 is arranged on the inner side of the end cover 8, a second outer circular surface 802 and a second inner circular surface 803 are arranged at the bottom of the second bearing chamber 801, an annular step is formed between the second outer circular surface 802 and the second inner circular surface 803, a second bearing 1 is arranged on the inner side of the second bearing chamber 801, the outer ring of the second bearing 1 abuts against the second outer circular surface 802, and the height difference between the second outer circular surface 802 and the second inner circular surface 803 is smaller than the axial play of the second bearing 1; the rotor assembly 6 penetrates through the interior of the stator assembly 2, two ends of the rotor assembly 6 respectively penetrate through the first bearing 16 and the second bearing 1, and a shaft shoulder of the rotor assembly 6 directly or indirectly respectively abuts against an inner ring of the first bearing 16 and an inner ring of the second bearing 1.
The difference in height between the second inner circumferential surface 803 and the second outer circumferential surface 802 of the second bearing chamber 801 of the end cap 8 is strictly controlled so as to be smaller than the axial play of the second bearing 1, and the rotor assembly 6 can have a certain amount of axial play by strictly controlling the axial clearance when the motor is assembled.
When the motor is impacted, the rotor assembly 6 can axially float due to the axial clearance of the motor, and the response time of the impact is prolonged, namely when the rotor assembly 6 of the motor axially floats to a certain position, the bearing inner ring of the second bearing 1 starts to be impacted by the rotor assembly 6 and generates axial displacement, the axial displacement is smaller than the axial clearance of the second bearing 1 and is larger than the height difference between the second inner circular surface 803 and the second outer circular surface 802 of the second bearing chamber 801 in the end cover 8, the rigid collision between the bearing inner ring of the second bearing 1 and the second inner circular surface 803 of the second bearing chamber 801 is ensured to remove the impact, and the impact is transmitted to the fastening position of the shell 5 and the end cover 8, so that the motor can resist high overload axial impact load, and after the impact is finished, the rotor assembly 6 of the motor can be restored by electromagnetic attraction and can be electrified to normally work.
Example 2
Referring to fig. 2, on the basis of embodiment 1, an inner ring gasket 7 is arranged between a shoulder of the rotor assembly 6 and an inner ring of the second bearing 1.
The inner ring gasket 7 is arranged between the shaft shoulder of the rotor assembly 6 and the inner ring of the second bearing 1, and the axial clearance of the whole rotor assembly 6 can be adjusted by adjusting the thickness of the inner ring gasket 7.
Example 3
Referring to fig. 3, on the basis of embodiment 1 or embodiment 2, the bottom of the first bearing chamber 501 is a plane, an outer ring gasket 4 is disposed at the bottom of the first bearing chamber 501, the outer ring of the first bearing 16 abuts against the outer ring gasket 4, and the thickness of the outer ring gasket 4 is smaller than the axial play of the first bearing 16.
The bottom of the first bearing chamber 501 is a plane, an outer ring gasket 4 is paved at the bottom of the first bearing chamber 501, the thickness of the outer ring gasket is smaller than the axial clearance of the first bearing 16, when the motor is impacted, the rotor assembly 6 can axially float due to the axial clearance of the motor, the response time of the impact is prolonged, i.e. the rotor assembly 6 of the motor axially moves to a certain position, the inner bearing ring of the first bearing 16 starts to be impacted by the rotor assembly 6 and generates axial displacement, the axial displacement is smaller than the axial play of the first bearing 16 and larger than the height of the outer ring gasket 4, ensuring that the bearing inner ring of the first bearing 16 and the bottom of the first bearing chamber 501 are in rigid collision to remove the impact and transmit the impact to the housing 5, thereby realize that the motor can resist high overload axial impact load, after the impact, rotor subassembly 6 of motor can receive the electromagnetic attraction homing and can the normal work of circular telegram.
Example 4
Referring to fig. 4, on the basis of embodiment 1 or embodiment 2, the bottom of the first bearing chamber 501 is provided with a first outer circular surface 502 and a first inner circular surface 503, the outer ring of the first bearing 16 abuts against the first outer circular surface 502, and the height difference between the first outer circular surface 502 and the first inner circular surface 503 is greater than the axial play of the first bearing 16.
When the motor is impacted, the rotor assembly 6 can axially shift due to the axial clearance of the motor, and the response time of the impact is prolonged, namely when the rotor assembly 6 of the motor axially shifts to a certain position, the bearing inner ring of the first bearing 16 starts to be impacted by the rotor assembly 6 and generates axial displacement, the axial displacement is smaller than the axial clearance of the first bearing 16 and larger than the height difference between the first outer circular surface 502 and the first inner circular surface 503 of the first bearing chamber 501 in the shell 5, the rigid collision between the bearing inner ring of the first bearing 16 and the first inner circular surface 503 of the first bearing chamber 501 is ensured to remove the impact, and the impact force is transmitted to the shell 5, so that the motor can resist high overload axial impact load, and after the impact is finished, the rotor assembly 6 of the motor can be restored by electromagnetic attraction force and can be electrified to normally work.
Example 5
Referring to fig. 1, on the basis of embodiment 1, the end cap 8 is nested in the open end of the shell 1, and a solid cylindrical pin 9 is arranged between the end cap 8 and the side wall of the shell 5.
The end cover 8 and the shell 5 are connected through a solid cylindrical pin 9 in a pin mode, the end face of the end cover 8 is flatly pressed on the end face of the stator assembly 2, the end cover 8 and the shell 5 form a fixed whole in the structural connection mode, and the end cover 8 can bear the axial overload impact of the rotor assembly 6.
Example 6
Referring to fig. 1, on the basis of embodiment 1, the magnetic rotor assembly further includes a position magnetic steel assembly 15 and a hall plate assembly 10, the hall plate assembly 10 is disposed outside the end cover 8, and the position magnetic steel assembly 15 is assembled at one end of the rotor assembly 6 penetrating through the rotating shaft of the end cover 8.
The position magnetic steel component 15 is connected with the rotor component 6 of the motor in an axial stringing and fixing mode through gluing and screw pressing to form a rotatable whole, the static whole coaxial rotation formed by the first bearing 16 and the second bearing 1 relative to the shell 5, the end cover 8 and the stator component 2 can be realized, the impact can be borne only by the end cover 8 when the high overload axial impact load is borne, and other parts are not affected.
Example 7
Referring to fig. 1, on the basis of embodiment 6, a counter bore is provided in the middle of the position magnetic steel assembly 15, and the counter bore is matched with the end of the rotating shaft of the rotor assembly 6 and connected to the end of the rotating shaft of the rotor assembly 6 through a screw 12, an elastic cushion 13 and a flat cushion 14.
The position magnetic steel component 15 is buckled at the end part of the rotating shaft of the rotor component 6 through a counter bore in the middle of the position magnetic steel component 15, the screw 12 penetrates through the gasket 13 and the flat pad 14 and then penetrates through the position magnetic steel component 15 and the end part of the rotating shaft of the rotor component 6 to fixedly connect the position magnetic steel component 15 and the rotor component 6 together, when the motor bears high overload axial impact load, only the rotor component 6, the first bearing 16 and the second bearing 1 need to bear impact, and other parts are not affected.
Example 8
Referring to fig. 1, on the basis of embodiment 6 or embodiment 7, the hall plate assembly further includes a tail cover 11, and the tail cover 11 is connected with the end cover 8 by passing through the hall plate assembly 10 through an axial screw.
The tail cover 11 is connected with the end cover 8 through the Hall plate assembly 10 by screws 12. The structural design enables all static parts on the motor to cover the shell 5, the stator assembly 2, the end cover 8, the tail cover 11 and the Hall plate assembly 10 to be axially connected in series and fixedly connected into a whole, when bearing high overload axial impact load, only the end cover 8 needs to bear impact, and other parts are not affected
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are included in the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims. The components and structures of the present embodiments that are not described in detail are well known in the art and do not constitute essential structural elements or elements.
Claims (8)
1. An electric machine resistant to high overload axial impact loads, comprising:
the bearing comprises a shell (5), wherein the shell (5) is of a cylindrical structure, one end of the shell (5) is opened, the other end of the shell is provided with a first bearing chamber (501), and a first bearing (16) is arranged on the inner side of the first bearing chamber (501);
the stator assembly (2), the stator assembly (2) is arranged on the inner side of the shell (5), and an elastic cylindrical pin (3) is arranged between the stator assembly (2) and the shell (5);
the end cover (8), the end cover (8) is arranged at the opening end of the shell (5), a second bearing chamber (801) is arranged on the inner side of the end cover (8), a second outer circular surface (802) and a second inner circular surface (803) are arranged at the bottom of the second bearing chamber (801), the second outer circular surface (802) and the second inner circular surface (803) form an annular step, a second bearing (1) is arranged on the inner side of the second bearing chamber (801), the outer ring of the second bearing (1) is abutted against the second outer circular surface (802), and the height difference between the second outer circular surface (802) and the second inner circular surface (803) is smaller than the axial play of the second bearing (1);
the rotor assembly (6) penetrates through the interior of the stator assembly (2), two ends of the rotor assembly (6) penetrate through the first bearing (16) and the second bearing (1) respectively, and a shaft shoulder of the rotor assembly (6) is directly or indirectly abutted against an inner ring of the first bearing (16) and an inner ring of the second bearing (1) respectively.
2. The electrical machine resistant to high overload axial impact loads according to claim 1, characterized in that an inner ring shim (7) is arranged between the shoulder of the rotor assembly (6) and the inner ring of the second bearing (1).
3. The electric machine resistant to high overload axial impact loads according to claim 1 or 2, characterized in that the bottom of the first bearing chamber (501) is a plane, the bottom of the first bearing chamber (501) is provided with an outer ring gasket (4), the outer ring of the first bearing (16) abuts against the outer ring gasket (4), and the thickness of the outer ring gasket (4) is smaller than the axial play of the first bearing (16).
4. The electric machine resistant to high overload axial shock loads according to claim 1 or 2, characterized in that the bottom of the first bearing chamber (501) is provided with a first outer circular surface (502) and a first inner circular surface (503), the first outer circular surface (502) and the first inner circular surface (503) form an annular step, the outer ring of the first bearing (16) abuts against the first outer circular surface (502), and the height difference between the first outer circular surface (502) and the first inner circular surface (503) is smaller than the axial play of the first bearing (16).
5. An electric machine resistant to high overload axial impact loads according to claim 1, characterised in that the end cap (8) is nested within the open end of the housing (5), a solid cylindrical pin (9) being provided between the end cap (8) and the side wall of the housing (5).
6. The motor capable of resisting the high overload axial impact load according to claim 1, further comprising a position magnetic steel assembly (15) and a Hall plate assembly (10), wherein the Hall plate assembly (10) is arranged on the outer side of the end cover (8), and the position magnetic steel assembly (15) is assembled at one end of a rotating shaft of the rotor assembly (6) penetrating through the end cover (8).
7. The motor capable of resisting high overload axial impact load according to claim 6, wherein a counter bore is arranged in the middle of the position magnetic steel assembly (15), the counter bore is matched with the end of the rotating shaft of the rotor assembly (6), and the counter bore is connected to the end of the rotating shaft of the rotor assembly (6) through a screw (12), an elastic cushion (13) and a flat cushion (14).
8. The electric machine capable of resisting high overload axial impact load according to claim 6 or 7, characterized by further comprising a tail cover (11), wherein the tail cover (11) is connected with the end cover (8) through the Hall plate assembly (10) through an axial screw.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111505674.3A CN114337054A (en) | 2021-12-10 | 2021-12-10 | Motor capable of resisting high-overload axial impact load |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111505674.3A CN114337054A (en) | 2021-12-10 | 2021-12-10 | Motor capable of resisting high-overload axial impact load |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114337054A true CN114337054A (en) | 2022-04-12 |
Family
ID=81050351
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111505674.3A Pending CN114337054A (en) | 2021-12-10 | 2021-12-10 | Motor capable of resisting high-overload axial impact load |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114337054A (en) |
-
2021
- 2021-12-10 CN CN202111505674.3A patent/CN114337054A/en active Pending
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