CN115498847A - U-shaped linear motor - Google Patents
U-shaped linear motor Download PDFInfo
- Publication number
- CN115498847A CN115498847A CN202211265110.1A CN202211265110A CN115498847A CN 115498847 A CN115498847 A CN 115498847A CN 202211265110 A CN202211265110 A CN 202211265110A CN 115498847 A CN115498847 A CN 115498847A
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- Prior art keywords
- motor
- brake
- sliding seat
- band
- stator
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K41/00—Propulsion systems in which a rigid body is moved along a path due to dynamo-electric interaction between the body and a magnetic field travelling along the path
- H02K41/02—Linear motors; Sectional motors
- H02K41/03—Synchronous motors; Motors moving step by step; Reluctance motors
- H02K41/031—Synchronous motors; Motors moving step by step; Reluctance motors of the permanent magnet type
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K1/00—Details of the magnetic circuit
- H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
- H02K1/12—Stationary parts of the magnetic circuit
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K5/00—Casings; Enclosures; Supports
- H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K5/00—Casings; Enclosures; Supports
- H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
- H02K5/10—Casings or enclosures characterised by the shape, form or construction thereof with arrangements for protection from ingress, e.g. water or fingers
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
- H02K7/10—Structural association with clutches, brakes, gears, pulleys or mechanical starters
- H02K7/102—Structural association with clutches, brakes, gears, pulleys or mechanical starters with friction brakes
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Physics & Mathematics (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Electromagnetism (AREA)
- Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)
Abstract
The invention belongs to the field of linear motors, and particularly relates to a U-shaped linear motor which comprises a shell body, an end cover, a cover plate, a motor stator iron core, a motor rotor iron core, a motor coil, a motor shaft, a sliding seat, a band-type brake assembly and a plurality of magnetic steels. The contracting brake assembly is arranged at the top end of the sliding seat and comprises a contracting brake coil; when the brake coil is powered off, the brake is formed between the brake component and the bottom surface of the cover plate; when the band-type brake coil is electrified, the band-type brake assembly releases the brake with the bottom surface of the cover plate. The invention provides an electromagnetic device, namely a linear motor, which has the advantages of simple and convenient structure, high efficiency, flexible rotor movement, low manufacturing cost, no need of other transmission devices, capability of directly pushing a load at the shaft end of the motor to perform continuous linear motion and adjustable speed. The motor structure of the invention replaces the braking mode of the traditional linear motor which utilizes reverse magnetic field force generated by large current, and can realize arbitrary braking by an innovative brake assembly braking mode, thereby prolonging the service life of the motor.
Description
Technical Field
The invention belongs to the field of linear motors, and particularly relates to a U-shaped linear motor.
Background
At present, the power sources of a punch, a plate shearing machine, an air compressor and the like are generally rotary power, such as the rotary form of a rotary motor and a fuel machine, and are changed into linear reciprocating motion through a crankshaft, a connecting rod, a screw rod nut and the like.
Although there is a linear motor which can directly convert the electric energy into the mechanical energy of linear motion without any intermediate conversion mechanism, the conventional linear motor uses the reverse magnetic field force generated by large current to brake, and the service life is short.
Disclosure of Invention
Aiming at the problem that the service life of the traditional linear motor is short because the traditional linear motor is braked by utilizing reverse magnetic field force generated by large current, the invention aims to provide a U-shaped linear motor which can realize random braking by using an innovative brake assembly braking mode.
The purpose of the invention is realized by the following technical scheme:
a U-shaped linear motor comprises a shell, a motor stator iron core, a motor rotor iron core, a motor coil, a motor shaft, a sliding seat, a band-type brake assembly and magnetic steel, wherein the motor stator iron core, the motor rotor iron core, the motor coil, the motor shaft, the sliding seat, the band-type brake assembly and the magnetic steel are respectively accommodated in the shell;
the motor stator iron core is arranged in the mounting cavity, and a coil mounting groove for penetrating the motor coil is formed in the inner side surface of the motor stator iron core;
the top of the sliding seat is connected with the shell in a sliding mode, the lower portion of the sliding seat extends to the inner side of the motor stator iron core, the motor rotor iron core is installed on the inner side of the lower portion of the sliding seat, and a plurality of magnetic steels are installed on the bottom surface of the motor rotor iron core along the length direction; the motor shaft can be arranged in the shell in a way of relatively moving along the length direction, two ends of the motor shaft respectively penetrate through the shell, and the motor shaft respectively penetrates through the motor rotor core and the sliding seat and is linked with the motor rotor core and the sliding seat;
the contracting brake assembly is installed on the top end of the sliding seat, forms braking between the shells when the contracting brake assembly is powered off, and releases braking between the shells when the contracting brake assembly is powered on.
The radial section of the motor stator iron core is U-shaped.
The shell comprises a shell body, end covers and a cover plate, wherein the end covers are respectively installed at two ends of the shell body in the length direction, and the cover plate is installed at the top end of the shell body; and two ends of the motor shaft respectively penetrate out of the end covers at the same end.
The top of the sliding seat is connected with the lower surface of the cover plate in a sliding mode, the axial direction of the motor shaft is the same as the length direction of the shell body, the axial center line of the motor shaft is parallel or collinear with the length direction center line of the shell body, and linear bearings used for supporting the motor shaft are arranged on the inner sides of the end covers.
And a sealing gasket is arranged between the end cover and the end surface of the shell body, and sealing rings are arranged at the positions, penetrated by the motor shaft, of the end cover.
The bottom surface of the cover plate is provided with a guide rail A, the length direction of the guide rail A is parallel to the length direction of the shell body, and the top end of the sliding seat is provided with a sliding block A which is in sliding connection with the guide rail A.
The middle part of the motor shaft penetrates through the motor rotor iron core and the sliding seat, the parts, located on the outer sides of the two ends of the sliding seat in the length direction, of the motor shaft are respectively in threaded connection with a locking nut, and the motor shaft is fixed on the motor rotor iron core and the sliding seat through the locking nuts.
The band-type brake assembly comprises a band-type brake coil, a main support of the band-type brake assembly, a band-type brake stator, an armature, a spring, two groups of swing rods, a friction plate mounting seat and two groups of friction plates which are arranged in a matched mode;
the brake assembly main support is mounted at the top end of the sliding seat, two ends of the brake assembly main support are respectively provided with a hinged end portion in an upward protruding mode, the middle of each group of the swing rod is hinged with a corresponding hinged end portion, one end of each group of the swing rod is hinged with the friction plate mounting seat of the same group, the top surface of each friction plate mounting seat of each group is provided with the friction plate, the other end of each group of the swing rod is provided with a long groove, the brake stator is mounted on the brake assembly main support between the two hinged end portions, the brake coil is mounted on the brake stator, the armature is located between the brake stator and the brake assembly main support, two ends of the armature in the length direction are respectively provided with a linkage pin shaft, each linkage pin shaft penetrates through the long groove of the adjacent swing rod, and a plurality of springs are arranged between the brake stator and the armature.
A limiting plate is further arranged between the armature and the main support of the band-type brake assembly, a plurality of threaded connecting sleeves are arranged on the limiting plate, each threaded connecting sleeve penetrates through the armature, connecting screws are arranged at positions, corresponding to the threaded connecting sleeves, on the band-type brake stator respectively, and each connecting screw is in threaded connection with the corresponding threaded connecting sleeve.
The outer side surface of the band-type brake stator is provided with a plurality of guide rails B, and the armature is respectively provided with a sliding block B which is in sliding connection with each guide rail B.
The invention has the advantages and positive effects that:
1. the invention provides an electromagnetic device, namely a linear motor, which has the advantages of simple and convenient structure, high efficiency, flexible rotor movement, low manufacturing cost, no need of other transmission devices, capability of directly pushing a load at the shaft end of the motor to perform continuous linear motion and adjustable speed.
2. The motor structure of the invention cancels the braking mode of the traditional linear motor which utilizes reverse magnetic field force generated by large current, adopts an innovative brake component to brake, can brake at will and prolongs the service life of the motor.
3. The invention has high interchangeability of parts and can be arbitrarily lengthened according to the requirement of a user.
Drawings
FIG. 1 is a schematic view of the overall internal structure of the present invention;
FIG. 2 is a schematic view of the arrangement structure of the housing body and the stator core of the motor according to the present invention;
FIG. 3 is a second schematic diagram of the overall internal structure of the present invention;
fig. 4 is a schematic structural diagram of the band-type brake assembly of the present invention.
In the figure: the structure of the brake comprises a shell body 1, an end cover 2, a cover plate 3, a motor stator core 4, a motor rotor core 5, a motor coil 6, a motor shaft 7, a sliding seat 8, magnetic steel 9, a band-type brake coil 10, a linear bearing 11, a sealing gasket 12, a sealing ring 13, a guide rail A14, a sliding block A15, a locking nut 16, a band-type brake assembly main support 17, a band-type brake stator 18, an armature 19, a spring 20, a swing rod 21, a friction plate mounting seat 22, a friction plate 23, a limiting plate 24, a threaded connecting sleeve 25, a connecting screw 26, a guide rail B27 and a sliding block B28.
Detailed Description
The invention is described in further detail below with reference to figures 1-4.
A U-shaped linear motor, as shown in fig. 1-4, in this embodiment, includes a housing, and a motor stator core 4, a motor rotor core 5, a motor coil 6, a motor shaft 7, a sliding seat 8, a brake assembly, and magnetic steel 9 respectively accommodated in the housing.
The inside of shell is the installation cavity, and motor stator core 4 installs in the installation cavity, offers the coil mounting groove that is used for wearing to establish motor coil 6 on motor stator core 4's the medial surface. The arrangement structure of the motor coil 6 and the coil mounting groove in the embodiment adopts the prior art, and the power on and off of the motor coil 6 is controlled by an external control system. The radial cross-sectional shape of the motor stator core 4 in this embodiment is a U-shape.
The top and the shell sliding connection of sliding seat 8, the lower part of sliding seat 8 extend to motor stator core 4's inboard, and motor rotor core 5 is installed to the lower part inboard of sliding seat 8, installs a plurality of magnet steels 9 along length direction on motor rotor core 5's the bottom surface. The arrangement structure of the motor rotor core 5 and the magnetic steel 9 adopts the prior art, and the thrust of the linear motor can be obtained by adjusting the cross section area of the motor rotor core 5. The motor shaft 7 can be installed in the shell along the length direction with relative movement, and both ends of the motor shaft 7 are respectively penetrated out by the shell, and the motor shaft 7 is respectively penetrated by the motor rotor core 5 and the sliding seat 8 and is linked with the motor rotor core 5 and the sliding seat 8.
The contracting brake component is arranged at the top end of the sliding seat 8, the contracting brake component and the shell form braking when the contracting brake component is powered off, and the contracting brake component releases the braking with the shell when the contracting brake component is powered on.
Specifically, in the embodiment, the outer shell comprises a shell body 1, end covers 2 and a cover plate 3, wherein the end covers 2 are respectively installed at two ends of the shell body 1 in the length direction, and the cover plate 3 is installed at an opening at the top end of the shell body 1 through a screw; two ends of the motor shaft 7 respectively penetrate out of the end covers 2 at the same end. The top of the sliding seat 8 is connected with the lower surface of the cover plate 3 in a sliding manner, the axial direction of the motor shaft 7 is the same as the length direction of the shell body 1, and the axial center line of the motor shaft 7 is parallel or collinear with the length direction center line of the shell body 1. The shell body 1 provided with the motor stator core 4 in the embodiment can also be connected with the same shell body 1, the whole length is increased according to the use requirement, and the modularization degree is high. The motor shaft 7 can be replaced by a motor shaft 7 of different length according to the use requirement of the stroke. When the motor coil 6 is electrified, the magnetic field force pushes the motor rotor core 5 and the sliding seat 8 to do linear motion on the inner side of the motor stator core 4, and the motor shaft 7 outputs linear motion; when the motor coil 6 is powered off, the motor rotor iron core 5 and the sliding seat 8 stop moving.
Specifically, each end cover 2 in the present embodiment is provided on the inner side thereof with a linear bearing 11 for supporting the motor shaft 7. In this embodiment, the linear bearing 11 is a commercially available product. The linear bearing 11 supports the motor shaft 7, so that the motor shaft 7 can stably move axially.
Specifically, in this embodiment, a seal gasket 12 is provided between the end cover 2 and the end surface of the housing body 1, and a seal ring 13 is provided on each end cover 2 at a position through which the motor shaft 7 passes. The arrangement of the sealing gasket 12 and the sealing ring 13 can prevent outside dust and water mist from entering the motor and corroding the motor.
Specifically, in the present embodiment, two guide rails a14 are provided on the bottom surface of the cover plate 3, the longitudinal direction of each guide rail a14 is parallel to the longitudinal direction of the housing body 1, and a slider a15 slidably connected to the guide rails a14 is provided at the tip of the slide base 8. The slide base 8 can be stably slid by providing the guide rail a14 and the slider a15.
Specifically, in this embodiment, the middle portion of the motor shaft 7 passes through the motor rotor core 5 and the sliding seat 8, the locking nuts 16 are respectively connected to the portions of the motor shaft 7 located at the outer sides of the two ends of the sliding seat 8 in the length direction in a threaded manner, and the motor shaft 7 is fixed on the motor rotor core 5 and the sliding seat 8 through the locking nuts 16, so that the assembly and disassembly are convenient.
Specifically, the band-type brake assembly in the embodiment includes a band-type brake coil 10, a main bracket 17 of the band-type brake assembly, a band-type brake stator 18, an armature 19, a spring 20, two sets of swing rods 21, a friction plate mounting seat 22 and a friction plate 23 which are cooperatively arranged. The friction plate 23 in this embodiment is a commercially available product.
The main support 17 of the band-type brake assembly is mounted on the top end of the sliding seat 8, two ends of the main support 17 of the band-type brake assembly are respectively provided with a hinged end portion in an upward protruding manner, the middle of each group of the swing rod 21 is hinged with a corresponding hinged end portion, one end of each group of the swing rod 21 is hinged with the same group of the friction plate mounting seat 22, the top surface of each group of the friction plate mounting seat 22 is provided with a friction plate 23, the other end of each group of the swing rod 21 is provided with an elongated slot, the band-type brake stator 18 is mounted on the main support 17 of the band-type brake assembly between the two hinged end portions, the band-type brake coil 10 is mounted on the band-type brake stator 18, the armature 19 is positioned between the band-type brake stator 18 and the main support 17, two ends of the armature 19 in the length direction are respectively provided with a linkage pin shaft, each linkage pin shaft penetrates through the elongated slot of the adjacent swing rod 21, and a plurality of springs 20 are arranged between the band-type brake stator 18 and the armature 19. When the band-type brake coil 10 is powered off, the spring 20 provides pressure for the armature 19, so that the armature 19 is separated from the band-type brake stator 18, and at the moment, the friction plate 23 is separated from the bottom surface of the cover plate 3 and generates a gap, so that the motor is released for braking; when the band-type brake coil 10 is electrified, the band-type brake stator 18 generates a magnetic field to suck the armature 19 and compress the spring 20, and two ends of the armature 19 respectively drive the swing rod 21 to swing, so that the friction plate 23 is propped against the bottom surface of the cover plate 3, and the braking effect of the motor is achieved. In the embodiment, the arrangement structure between the band-type brake coil 10 and the band-type brake stator 18 adopts the prior art, and the band-type brake coil 10 is controlled to be powered on or powered off by an external control system.
Specifically, in this embodiment, a limiting plate 24 is further disposed between the armature 19 and the main support 17 of the band-type brake assembly, the limiting plate 24 is provided with a plurality of threaded connecting sleeves 25, each of the plurality of threaded connecting sleeves 25 respectively penetrates through the armature 19, a connecting screw 26 is respectively disposed at a position on the band-type brake stator 18 corresponding to each of the threaded connecting sleeves 25, and each of the connecting screws 26 is respectively in threaded connection with the corresponding threaded connecting sleeve 25. The limit plate 24 plays a role of blocking the armature 19 and preventing the armature 19 from being separated from the band-type brake stator 18. The size of the gap between the limiting plate 24 and the band-type brake stator 18 can be adjusted through the arrangement of the connecting screw 26 and the threaded connecting sleeve 25.
Specifically, in the present embodiment, the outer side surface of the band-type brake stator 18 is provided with a plurality of guide rails B27, the length direction of each guide rail B27 is perpendicular to the plane of the cover plate 3, and the armature 19 is provided with a slider B28 slidably connected to each guide rail B27. The guide rail B27 and the slider B28 are provided to stabilize the vertical movement of the armature 19.
The working principle is as follows:
when the motor coil 6 is electrified, the magnetic field force pushes the motor rotor core 5 and the sliding seat 8 to do linear motion on the inner side of the motor stator core 4, and the motor shaft 7 outputs linear motion; when the motor coil 6 is powered off, the motor rotor iron core 5 and the sliding seat 8 stop moving; when the brake coil 10 is powered off, the spring 20 provides pressure for the armature 19, so that the armature 19 is separated from the brake stator 18, and at the moment, the friction plate 23 is separated from the bottom surface of the cover plate 3 and generates a gap, so that the motor is released to brake; when the band-type brake coil 10 is electrified, the band-type brake stator 18 generates a magnetic field to suck the armature 19 and compress the spring 20, two ends of the armature 19 respectively drive the swing rod 21 to swing, and the friction plate 23 is abutted against the bottom surface of the cover plate 3, so that the braking effect of the motor is achieved; the contracting brake coil 10 and the motor coil 6 are powered on or powered off simultaneously, so that the sliding seat 8 provided with the contracting brake assembly can stop at any time to achieve braking, and the braking is released simultaneously when the sliding seat moves.
Claims (10)
1. A U type linear electric motor which characterized in that: the brake comprises a shell, and a motor stator iron core (4), a motor rotor iron core (5), a motor coil (6), a motor shaft (7), a sliding seat (8), a brake component and magnetic steel (9) which are respectively accommodated in the shell;
the motor stator iron core (4) is arranged in the installation cavity, and a coil installation groove for penetrating the motor coil (6) is formed in the inner side surface of the motor stator iron core (4);
the top of the sliding seat (8) is connected with the shell in a sliding mode, the lower portion of the sliding seat (8) extends to the inner side of the motor stator iron core (4), the motor rotor iron core (5) is installed on the inner side of the lower portion of the sliding seat (8), and a plurality of magnetic steels (9) are installed on the bottom face of the motor rotor iron core (5) along the length direction; the motor shaft (7) can be installed in the shell in a way of relatively moving along the length direction, two ends of the motor shaft (7) penetrate out of the shell respectively, and the motor shaft (7) penetrates through the motor rotor core (5) and the sliding seat (8) respectively and is linked with the motor rotor core (5) and the sliding seat (8);
the contracting brake assembly is installed on sliding seat (8) top, the contracting brake assembly when the contracting brake assembly cuts off the power supply with form the braking between the shell, the contracting brake assembly relax when the contracting brake assembly switches on with the braking between the shell.
2. A U-shaped linear motor according to claim 1, characterized in that: the radial section of the motor stator iron core (4) is U-shaped.
3. A U-shaped linear motor according to claim 1, characterized in that: the shell comprises a shell body (1), end covers (2) and a cover plate (3), wherein the end covers (2) are respectively installed at two ends of the shell body (1) in the length direction, and the cover plate (3) is installed at an opening at the top end of the shell body (1); and two ends of the motor shaft (7) respectively penetrate out of the end covers (2) at the same end.
4. A U-shaped linear motor according to claim 3, characterized in that: the top of the sliding seat (8) is connected with the lower surface of the cover plate (3) in a sliding mode, the axial direction of the motor shaft (7) is the same as the length direction of the shell body (1), the axial center line of the motor shaft (7) is parallel or collinear with the center line of the shell body (1) in the length direction, and a linear bearing (11) used for supporting the motor shaft (7) is arranged on the inner side of each end cover (2).
5. A U-shaped linear motor according to claim 3, characterized in that: and a sealing gasket (12) is arranged between the end cover (2) and the end surface of the shell body (1), and sealing rings (13) are arranged at the positions, which are penetrated by the motor shaft (7), on the end cover (2).
6. A U-shaped linear motor according to claim 3, characterized in that: be equipped with on apron (3) bottom surface guide rail A (14), the length direction of guide rail A (14) is on a parallel with the length direction of casing main part (1), the top of sliding seat (8) be equipped with guide rail A (14) sliding connection's slider A (15).
7. A U-shaped linear motor according to claim 1, characterized in that: the middle part of motor shaft (7) passes motor rotor core (5) and sliding seat (8), is located the part in the length direction's of sliding seat (8) both ends outside respectively threaded connection has lock nut (16) on motor shaft (7), motor shaft (7) pass through lock nut (16) are fixed on motor rotor core (5) and sliding seat (8).
8. A U-shaped linear motor according to claim 1, characterized in that: the band-type brake assembly comprises a band-type brake coil (10), a band-type brake assembly main bracket (17), a band-type brake stator (18), an armature (19), a spring (20), two groups of swing rods (21), a friction plate mounting seat (22) and friction plates (23) which are arranged in a matched mode;
the brake component main support (17) is installed at the top end of the sliding seat (8), two ends of the brake component main support (17) are respectively provided with hinged end portions in an upward protruding mode, the middle of each group of the swing rod (21) is hinged with one corresponding hinged end portion, one end of each group of the swing rod (21) is hinged with the same group of the friction plate installation seat (22), the top surface of each group of the friction plate installation seat (22) is provided with the friction plate (23), the other end of each group of the swing rod (21) is provided with an elongated slot, the brake stator (18) is installed on the brake component main support (17) between the two hinged end portions, the brake coil (10) is installed on the brake stator (18), the armature (19) is located between the brake stator (18) and the brake main support component (17), two ends of the armature (19) in the length direction are respectively provided with linkage pin shafts, each pin shaft penetrates through the adjacent elongated slot of the swing rod (21), and a plurality of springs (20) are arranged between the brake stator (18) and the brake main support (19).
9. A U-shaped linear motor according to claim 8, wherein: armature (19) with still be equipped with limiting plate (24) between band-type brake subassembly main support (17), be equipped with a plurality of thread connection cover (25) on limiting plate (24), each a plurality of thread connection cover (25) pass respectively armature (19), on band-type brake stator (18) with each the position that thread connection cover (25) correspond is equipped with connecting screw (26) respectively, each connecting screw (26) respectively with corresponding thread connection cover (25) threaded connection.
10. A U-shaped linear motor according to claim 8, characterized in that: the outer side face of the band-type brake stator (18) is provided with a plurality of guide rails B (27), and the armature iron (19) is respectively provided with a sliding block B (28) which is connected with each guide rail B (27) in a sliding mode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211265110.1A CN115498847A (en) | 2022-10-17 | 2022-10-17 | U-shaped linear motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211265110.1A CN115498847A (en) | 2022-10-17 | 2022-10-17 | U-shaped linear motor |
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| Publication Number | Publication Date |
|---|---|
| CN115498847A true CN115498847A (en) | 2022-12-20 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211265110.1A Pending CN115498847A (en) | 2022-10-17 | 2022-10-17 | U-shaped linear motor |
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| CN (1) | CN115498847A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115788761A (en) * | 2022-12-26 | 2023-03-14 | 四川水利职业技术学院 | Electric speed regulator based on hydropower station |
-
2022
- 2022-10-17 CN CN202211265110.1A patent/CN115498847A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115788761A (en) * | 2022-12-26 | 2023-03-14 | 四川水利职业技术学院 | Electric speed regulator based on hydropower station |
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