CN219477690U - Linear motor stator structure and linear motor - Google Patents
Linear motor stator structure and linear motor Download PDFInfo
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- CN219477690U CN219477690U CN202223272659.1U CN202223272659U CN219477690U CN 219477690 U CN219477690 U CN 219477690U CN 202223272659 U CN202223272659 U CN 202223272659U CN 219477690 U CN219477690 U CN 219477690U
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- 229910000831 Steel Inorganic materials 0.000 claims abstract description 45
- 239000010959 steel Substances 0.000 claims abstract description 45
- 239000000428 dust Substances 0.000 abstract description 3
- 230000033001 locomotion Effects 0.000 description 4
- 238000009434 installation Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000012938 design process Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 229910001172 neodymium magnet Inorganic materials 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
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Abstract
The utility model discloses a linear motor stator structure and a linear motor. The linear motor stator structure includes: the first magnetic plate is internally provided with a containing cavity, the first side surface of the first magnetic plate is provided with an opening, and the opening is communicated with the containing cavity; the magnetic steel is arranged in the accommodating cavity, and the distance from the magnetic steel to the opening is adjustable. According to the linear motor stator structure and the linear motor, the distance between the magnetic steel and the opening is adjustable, so that the air gap between the stator and the rotor above the first side face is adjusted, the back electromotive force is adjusted, the problem that in the prior art, after the linear motor is installed, the air gap cannot be adjusted, and components of the motor are damaged is avoided, the reliability of the linear motor is improved, and the magnetic steel is arranged in the first magnetic plate, so that the stator magnetic steel is prevented from being damaged by sundries or dust and the like due to the fact that the stator magnetic steel is exposed outside, and the reliability of the linear motor is further improved.
Description
Technical Field
The utility model relates to the technical field of driving equipment, in particular to a linear motor stator structure and a linear motor.
Background
A linear motor is a transmission device that converts electric energy directly into mechanical energy for linear motion by expanding a closed magnetic field into an open magnetic field without any intermediate conversion mechanism. The linear motor may be constructed by radially sectioning a single rotary motor and expanding the circumference of the motor into a straight line. Wherein the stator corresponds to the primary of the linear motor and the mover corresponds to the secondary of the linear motor. When current is introduced into the rotor, a plurality of groups of coils inside the rotor generate strong magnetic force lines, the stator is a neodymium-iron-boron magnet with permanent magnetic force, the permanent magnets arranged in positive and negative directions also generate strong magnetic force lines, and due to alternation of positive and negative poles, a traveling wave magnetic field is generated in an air gap between the rotor and the stator, and a driving force is generated under the action of the traveling wave magnetic field and the permanent magnets in the stator, so that the linear motion of the moving part is realized. The direction and speed of movement can be changed under the control of the drive.
In order to improve the driving force of the motor in the running process of the motor, the counter electromotive force of the motor needs to be increased, the requirement on the bus voltage of the linear motor is higher, and the damage of the excessive counter electromotive force is more. Under the condition of larger counter potential, components of the motor can be damaged, so that the reliability of the motor is reduced, the service life of the motor is shortened, the use cost is increased, and therefore, the air gap between a rotor and a stator of the motor is necessary to be adjusted.
However, in the prior art, the air gap between the stator and the rotor is determined in the production design process, and the counter electromotive force of the linear motor is determined in the factory, so that the problem of too small application range of the linear motor is caused.
Disclosure of Invention
The utility model discloses a linear motor stator structure and a linear motor, and solves the problem that the application range of the linear motor in the prior art is too small.
The utility model discloses a stator structure of a linear motor, which comprises:
the first magnetic plate is internally provided with a containing cavity, the first side surface of the first magnetic plate is provided with an opening, and the opening is communicated with the containing cavity;
the magnetic steel is arranged in the accommodating cavity, and the distance from the magnetic steel to the opening is adjustable.
The linear motor stator structure further comprises an adjusting mechanism, the adjusting mechanism is arranged on the first magnetic plate, the magnetic steel is connected to the adjusting mechanism, and the adjusting mechanism can drive the magnetic steel to move in the accommodating cavity.
The adjusting mechanism comprises an adjusting bolt, a mounting hole is formed in the first side face, the adjusting bolt is rotatably arranged at the mounting hole, and the magnetic steel is connected to the adjusting bolt.
The first side is provided with a countersunk head groove, the bottom surface of the countersunk head groove is provided with the mounting hole, and the head of the adjusting bolt is positioned in the countersunk head groove.
The number of the mounting holes is multiple, part of the mounting holes are positioned on the first side of the opening, and the rest of the mounting holes are positioned on the second side of the opening.
The linear motor stator structure further comprises a second magnetic plate, the second magnetic plate is arranged in the accommodating cavity, the magnetic steel is arranged on the second magnetic plate, and the second magnetic plate is connected to the adjusting mechanism.
The width of the opening is larger than or equal to the length of the magnetic steel.
The first magnetic plate is provided with a second side surface opposite to the first side surface, a connecting structure is arranged on the second side surface, and the linear motor stator structure is arranged on a preset structure through the connecting structure.
At least countersunk head screw holes are formed in the second side face, and all countersunk head screw holes form the connecting structure.
Another aspect of the present utility model provides a linear motor, including the above-mentioned linear motor stator structure.
According to the linear motor stator structure and the linear motor, the distance between the magnetic steel and the opening is adjustable, so that the air gap between the stator and the rotor above the first side face is adjusted, the back electromotive force is adjusted, the problem that in the prior art, after the linear motor is installed, the air gap cannot be adjusted, and components of the motor are damaged is avoided, the reliability of the linear motor is improved, and the magnetic steel is arranged in the first magnetic plate, so that the stator magnetic steel is prevented from being damaged by sundries or dust and the like due to the fact that the stator magnetic steel is exposed outside, and the reliability of the linear motor is further improved.
Drawings
Fig. 1 is a schematic structural view of a stator structure of a linear motor according to an embodiment of the present utility model;
fig. 2 is an exploded view of a stator structure of a linear motor according to an embodiment of the present utility model;
FIG. 3 is a state diagram of the use of a linear motor stator structure according to an embodiment of the present utility model;
legend: 1. a first magnetic plate; 11. a receiving chamber; 12. an opening; 2. magnetic steel; 3. an adjusting mechanism; 4. and a second magnetic plate.
Detailed Description
The utility model is further illustrated, but is not limited to, the following examples.
As shown in fig. 1 to 3, the present utility model discloses a stator structure of a linear motor, comprising: a first magnetic plate 1, wherein a containing cavity 11 is formed in the first magnetic plate 1, an opening 12 is arranged on a first side surface of the first magnetic plate 1, and the opening 12 is communicated with the containing cavity 11; the magnetic steel 2 is arranged in the accommodating cavity 11, and the distance from the magnetic steel 2 to the opening 12 is adjustable. The interval between magnet steel 2 and opening 12 is adjustable to realize the air gap adjustment between stator and the rotor that is in first side top, and then realize the regulation to the back electromotive force, avoid the unable air gap of adjusting after the linear electric motor installation among the prior art and cause the problem that the components and parts of motor damage, improve linear electric motor's reliability, set up magnet steel 2 in first magnetic plate 1 moreover, can avoid stator magnet steel 2 to expose outside and can be damaged by debris or dust etc. further improve linear electric motor's reliability.
When a larger driving force is needed, the distance between the magnetic steel 2 and the opening 12 is reduced to enable the air gap to be smaller, the magnetic density of the air gap to be larger, and the linear motor can have larger thrust; when moving at high speed, the distance between the magnetic steel 2 and the opening 12 is increased to enlarge the air gap, the magnetic density of the air gap is reduced, the counter potential is reduced, the components in the linear motor are protected, and the service life of the linear motor is prolonged.
Specifically, the linear motor stator structure further comprises an adjusting mechanism 3, the adjusting mechanism 3 is arranged on the first magnetic plate 1, the magnetic steel 2 is connected to the adjusting mechanism 3, and the adjusting mechanism 3 can drive the magnetic steel 2 to move in the accommodating cavity 11.
As an embodiment, the adjusting mechanism 3 includes an adjusting bolt, a mounting hole is provided on the first side, the adjusting bolt is rotatably disposed at the mounting hole, and the magnetic steel 2 is connected to the adjusting bolt. The position of the magnetic steel 2 is adjusted by rotating the adjusting bolt.
In order to avoid the influence of the adjusting bolt on the movement of the rotor, a countersunk groove is formed in the first side face, the mounting hole is formed in the bottom face of the countersunk groove, and the head of the adjusting bolt is located in the countersunk groove.
Wherein, the mounting hole is internally provided with internal threads, and the adjusting bolt is in threaded fit with the internal threads.
Or, the first magnetic plate 1 is provided with a second side surface opposite to the first side surface, the second side surface is provided with a threaded hole corresponding to the mounting hole, and the screw rod of the adjusting bolt can be in threaded fit with the threaded hole, so that the head of the adjusting bolt is always positioned in the countersunk head groove.
In order to avoid displacement of the first magnetic plate 1 and the magnetic steel 2 in the rotation direction, the number of the mounting holes is multiple, part of the mounting holes are positioned on the first side of the opening 12, and the rest of the mounting holes are positioned on the second side of the opening 12.
As another embodiment, the adjustment mechanism 3 may be a hydraulic structure.
For the convenience to the installation of magnet steel 2 and reduce the processing to magnet steel 2, linear electric motor stator structure still includes second magnetic plate 4, second magnetic plate 4 set up in hold in the chamber 11, magnet steel 2 set up in on the second magnetic plate 4, second magnetic plate 4 connect in on the adjustment mechanism 3.
The width of the opening 12 is greater than or equal to the length of the magnetic steel 2. I.e. the magnet steel 2 is completely exposed through the opening 12, so that the magnetic field generated by the magnet steel 2 is reliable.
Preferably, the first magnetic plate 1 is formed with a T-shaped receiving cavity 11. The second magnetic plate 4 is prevented from being separated from the first magnetic plate 1, so that the magnetic steel 2 can be exposed through the opening 12, and the magnetic field is ensured to be reliable.
Of course, it is also possible to form the accommodating cavity 11 with a trapezoidal cross section on the first magnetic plate 1, and the second magnetic plate 4 is matched with the long bottom of the trapezoid, while the short bottom of the trapezoid is used for exposing the magnetic steel 2.
The first magnetic plate 1 is provided with a second side surface opposite to the first side surface, a connecting structure is arranged on the second side surface, and the linear motor stator structure is arranged on a preset structure through the connecting structure.
At least countersunk head screw holes are formed in the second side face, and all countersunk head screw holes form the connecting structure.
Another aspect of the present utility model provides a linear motor, including the above-mentioned linear motor stator structure.
It should be understood that the above-described embodiments of the present utility model are provided by way of example only and are not intended to limit the scope of the utility model. Other variations or modifications of the above teachings will be apparent to those of ordinary skill in the art. Not all embodiments are exhaustive. All obvious changes or modifications which come within the spirit of the utility model are desired to be protected.
Claims (10)
1. A linear electric motor stator structure, its characterized in that: comprising the following steps:
a first magnetic plate (1), wherein a containing cavity (11) is formed in the first magnetic plate (1), an opening (12) is arranged on the first side surface of the first magnetic plate (1), and the opening (12) is communicated with the containing cavity (11);
the magnetic steel (2) is arranged in the accommodating cavity (11), and the distance from the magnetic steel (2) to the opening (12) is adjustable.
2. The linear motor stator structure according to claim 1, further comprising an adjusting mechanism (3), wherein the adjusting mechanism (3) is disposed on the first magnetic plate (1), the magnetic steel (2) is connected to the adjusting mechanism (3), and the adjusting mechanism (3) can drive the magnetic steel (2) to move in the accommodating cavity (11).
3. The linear motor stator structure according to claim 2, characterized in that the adjusting mechanism (3) comprises an adjusting bolt, a mounting hole is provided on the first side, the adjusting bolt is rotatably provided at the mounting hole, and the magnetic steel (2) is connected to the adjusting bolt.
4. The stator structure of a linear motor according to claim 3, wherein a countersunk head groove is formed in the first side surface, the mounting hole is formed in the bottom surface of the countersunk head groove, and the head portion of the adjusting bolt is located in the countersunk head groove.
5. A linear motor stator structure according to claim 3, characterized in that the number of mounting holes is plural and that part of the mounting holes are located on a first side of the opening (12) and the remaining part of the mounting holes are located on a second side of the opening (12).
6. The linear motor stator structure according to claim 2, further comprising a second magnetic plate (4), wherein the second magnetic plate (4) is disposed in the accommodating cavity (11), the magnetic steel (2) is disposed on the second magnetic plate (4), and the second magnetic plate (4) is connected to the adjusting mechanism (3).
7. The linear motor stator structure according to claim 6, characterized in that the width of the opening (12) is equal to or greater than the length of the magnetic steel (2).
8. The linear motor stator structure according to claim 1, characterized in that the first magnetic plate (1) has a second side opposite to the first side, on which a connection structure is provided, by means of which the linear motor stator structure is arranged on a preset structure.
9. The linear motor stator structure of claim 8, wherein at least countersunk screw holes are provided in the second side, all of the countersunk screw holes constituting the connection structure.
10. A linear motor, characterized in that: a linear motor stator structure comprising any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223272659.1U CN219477690U (en) | 2022-12-05 | 2022-12-05 | Linear motor stator structure and linear motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223272659.1U CN219477690U (en) | 2022-12-05 | 2022-12-05 | Linear motor stator structure and linear motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219477690U true CN219477690U (en) | 2023-08-04 |
Family
ID=87434720
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202223272659.1U Active CN219477690U (en) | 2022-12-05 | 2022-12-05 | Linear motor stator structure and linear motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219477690U (en) |
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2022
- 2022-12-05 CN CN202223272659.1U patent/CN219477690U/en active Active
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