Adjustable straight stroke electric actuator

Abstract

The invention discloses an adjustable straight-stroke electric actuator, which belongs to the technical field of electric actuators and comprises an actuator shell, a drying mechanism with an electromagnetic coil is arranged in the actuator shell, and the drying mechanism comprises the electromagnetic coil which is rotatably mounted in the actuator shell and is used for accurately controlling the output displacement of the actuator. And the drying mechanism further comprises a drying assembly, a supporting plate is installed in the actuator shell, a fixing plate is fixedly installed at the bottom end of the supporting plate, and the drying assembly is arranged at the bottom end of the fixing plate. And when the motor rotates, the rotating torque is generated to drive the rotor of the motor to rotate quickly, so that the electric actuator has higher response speed, and application scenes such as quick positioning, quick starting and the like in an automatic control system needing quick response can be met.

Description

Technical Field

[0001] The present invention relates to the technical field of electric actuators, and particularly to an adjustable linear electric actuator. Background Art

[0002] In the fields of industrial automation and control systems, linear electric actuators play a crucial role. They are widely used in various industrial equipment to achieve precise position control and automated operations. In application scenarios that require rapid response, the humid environment inside traditional electric actuators not only affects the performance of their internal electronic components but also causes safety problems such as short circuits. At the same time, due to the lack of an effective protection mechanism for power output in traditional electric actuators, when faults such as stuck power plugs or unstable currents occur, the actuators often fail or are damaged. Summary of the Invention

[0003] The purpose of the present invention is to provide an adjustable linear electric actuator to solve the problems proposed in the above background art, that is, the humid environment inside the electric actuator not only affects the performance of the internal electronic components of the electric actuator but also causes short circuits.

[0004] To achieve the above purpose, the present invention provides the following technical solution: An adjustable linear electric actuator includes an actuator housing. Inside the actuator housing, there is a drying mechanism with an electromagnetic coil. The drying mechanism includes an electromagnetic coil rotatably installed inside the actuator housing for precisely controlling the output displacement of the actuator. The drying mechanism also includes a drying component. Inside the actuator housing, there is a support plate. At the bottom end of the support plate, there is a fixed plate fixedly installed. The drying component is arranged at the bottom end of the fixed plate. On the surface of the drying component close to the electromagnetic coil, there is an arc-shaped magnetic plate for driving the drying rod body to rotate in cooperation with the electromagnetic coil. The drying component includes a drying part. The drying part includes a drying rod body installed at the bottom end of the fixed plate for moisture-proof and corrosion-proof purposes. On the surface of the drying rod body, there are a plurality of inverted conical ventilation openings.

[0005] As a preferred technical solution of the present invention, one end of the electromagnetic coil is fixedly installed with a support member. At the top end of the support member, there is an electromagnetic pole for driving the electromagnetic coil to rotate. The electromagnetic pole is electrically connected to the built-in power supply of the actuator housing through a conductive sheet.

[0006] As a preferred technical solution of the present invention, a cavity is opened inside the drying rod body. Inside the cavity, there is a resin column, and on the surface of the resin column close to the ventilation opening, there are a plurality of shielding plates for shielding external magnetic field interference.

[0007] As a preferred technical solution of the present invention, a limiting iron block is slidably installed through the inner bottom wall of the actuator housing, and the limiting iron block is arranged at the bottom end of the drying rod body. A first magnet is slidably installed inside the inner bottom wall of the actuator housing. A first spring is fixedly installed between the first magnet and the inner bottom wall of the actuator housing. One end of the first magnet is fixedly installed with a limiting rod, and the limiting rod slidably penetrates through the inner bottom wall of the actuator housing.

[0008] As a preferred technical solution of the present invention, a sealing plate for closing the internal space of the actuator housing is fixedly installed at the bottom ends of the plurality of limiting iron blocks.

[0009] As a preferred technical solution of the present invention, a protection mechanism is arranged inside the actuator housing. The protection mechanism includes a mounting plate installed inside the actuator housing. An electric socket is electrically connected to the built-in power supply inside the mounting plate. An electric plug is inserted at a position of the mounting plate close to the electric socket. A limiting component is arranged inside the mounting plate. The limiting component includes a second magnet slidably installed inside the mounting plate. An auxiliary iron block is installed on the surface of the electric plug close to the second magnet. A second spring is fixedly installed between the second magnet and the inner wall of the mounting plate.

[0010] As a preferred technical solution of the present invention, an electromagnetic induction column is slidably installed inside the mounting plate. One end of the electromagnetic induction column is slidably installed inside the second magnet. The top end of the electromagnetic induction column is electrically connected to the electric socket through the built-in power supply. A first bevel gear is threadedly installed on the outer surface of the electromagnetic induction column. A second bevel gear is rotatably installed inside the mounting plate. The first bevel gear and the second bevel gear are meshed. One end of the second bevel gear is fixedly installed with an auxiliary turntable.

[0011] As a preferred technical solution of the present invention, an oil storage tank is arranged inside the mounting plate, and one end of the oil storage tank communicates with the space where the second bevel gear is located. A spiral impeller is rotatably installed inside the oil storage tank. A belt is installed for transmission between the spiral impeller and the auxiliary turntable.

[0012] As a preferred technical solution of the present invention, a drive shaft is arranged inside the actuator housing. A motor for starting the drive shaft is installed on one side of the actuator housing, and the drive shaft is located at the middle position of the electromagnetic coil.

[0013] Compared with the prior art, the beneficial effects of the present invention are: 1. The present invention is provided with an electrically driven electromagnetic coil inside the actuator housing. When current passes through, according to Faraday's law of electromagnetic induction, a magnetic field is rapidly generated. This magnetic field interacts with other magnetic fields in the electric actuator to generate a rotational torque, driving the rotor of the motor to rotate rapidly. This design enables the electric actuator to have a fast response speed, capable of meeting the rapidly responsive application scenarios such as rapid positioning and rapid startup in an automated control system.

[0014] 2. The drying component rotatably installed inside the actuator of the present invention cooperates with the electromagnetic coil. When the electromagnetic coil rotates, through the magnetic attraction of the arc-shaped magnetic plate, the drying rod body in the drying component is driven to rotate synchronously. The rotating drying rod body, in cooperation with the ventilation openings on its surface, can continuously dry the interior of the actuator housing, effectively removing moisture, thereby improving the stability of the current inside the actuator and reducing current fluctuations and failures caused by a humid environment.

[0015] 3. When the actuator is operating internally, through the attraction between the second magnet and the auxiliary iron block, stable positioning of the electrical plug is achieved, ensuring the stability and reliability of power output. This design not only increases the service life of the actuator but also reduces the risk of failures caused by unstable power output.

[0016] 4. The present invention is provided with an auxiliary turntable. When the power plug gets stuck or the current becomes unstable and fails, the auxiliary turntable can be manually rotated to stably move out the electrical plug, facilitating fault handling and maintenance. This design improves the operability and maintainability of the actuator, reducing the maintenance cost and time. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a schematic diagram of the overall structure of the present invention; Figure 2 is a schematic diagram of the internal structure of the actuator housing of the present invention; Figure 3 is a schematic diagram of the electromagnetic coil structure of the present invention; Figure 4 is a schematic diagram of the longitudinal and transverse cross-sectional structures of the drying rod body of the present invention; Figure 5 is a schematic diagram of a partial cross-sectional structure of the actuator housing of the present invention; Figure 6 is a schematic diagram of the mounting plate structure of the present invention; Figure 7 is a schematic diagram of the internal structure of the mounting plate of the present invention; Figure 8 is of the present invention Figure 7 The enlarged schematic diagram of part A in.

[0018] In the figure: 1. Actuator housing; 2. Motor; 3. Drying mechanism; 31. Conductive sheet; 32. Electromagnetic pole; 33. Support member; 34. Electromagnetic coil; 35. Drying assembly; 351. Support plate; 352. Fixed plate; 353. Arc-shaped magnetic plate; 354. Drying component; 3541. Drying rod body; 3542. Vent; 3543. Cavity; 3544. Resin column; 3545. Shielding plate; 355. Limiting iron block; 356. Sealing plate; 357. First magnet; 358. First spring; 359. Limiting rod; 4. Protection mechanism; 41. Electric plug; 42. Mounting plate; 43. Electric socket; 44. Limiting assembly; 441. Auxiliary iron block; 442. Second magnet; 443. Second spring; 444. First bevel gear; 445. Electromagnetic induction column; 446. Second bevel gear; 447. Helical impeller; 448. Oil storage tank; 449. Belt; 4410. Auxiliary turntable; 5. Drive shaft. Detailed implementation mode

[0019] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0020] Please refer to Figures 1-8 , the present invention provides an adjustable linear electric actuator, including an actuator housing 1. Inside the actuator housing 1, there is a drying mechanism 3 with an electromagnetic coil 34. The drying mechanism 3 includes an electromagnetic coil 34 rotatably installed inside the actuator housing 1 for precisely controlling the output displacement of the actuator.

[0021] Among them, the electromagnetic coil 34 is the core component that generates a magnetic field in the electric actuator. When an electric current passes through the electromagnetic coil 34, according to Faraday's law of electromagnetic induction, a magnetic field will be generated around it. This magnetic field interacts with the permanent magnet or other magnetic fields in the electric actuator, thereby generating a rotational torque to drive the rotor of the motor to rotate. And by adjusting the magnitude and direction of the electric current, precise control and regulation of the magnetic field can be achieved; by setting the drying mechanism 3, it is possible to prevent the electromagnetic coil 34 from being affected by the environment and changing, which affects current control.

[0022] In the technical solution of the embodiment of the present application, the drying mechanism 3 further includes a drying assembly 35. A support plate 351 is installed inside the actuator housing 1. A fixed plate 352 is fixedly installed at the bottom end of the support plate 351. The drying assembly 35 is arranged at the bottom end of the fixed plate 352. An arc-shaped magnetic plate 353 for cooperating with the electromagnetic coil 34 to drive the drying rod body 3541 to rotate is installed on the surface of the drying assembly 35 close to the electromagnetic coil 34.

[0023] One end of the electromagnetic coil 34 is fixed by a support 33. The electromagnetic pole 32 provided at the top of the support 33 is electrically connected to the built-in power supply of the actuator housing 1 through a conductive sheet 31. This design enables the electromagnetic coil 34 to obtain a stable power supply, generates a magnetic field through the action of the electromagnetic pole 32, drives the electromagnetic coil 34 to rotate. When the electromagnetic coil 34 rotates, through the magnetic attraction of the arc-shaped magnetic plate 353, the drying rod body 3541 in the drying assembly 35 can rotate synchronously. The rotating drying rod body 3541 can continuously dry the inside of the actuator housing 1, thereby improving the stability of the current inside the actuator.

[0024] In the technical solution of the embodiment of the present application, the drying assembly 35 includes a drying member 354. The drying member 354 includes a drying rod body 3541 for moisture and corrosion prevention installed at the bottom end of the fixing plate 352. A plurality of inverted conical ventilation openings 3542 are formed on the surface of the drying rod body 3541.

[0025] Among them, the rotating drying rod body 3541 cooperates with the ventilation openings 3542 on its surface, can drive the airflow to change, and can increase the contact area between the material of the drying rod body 3541 and the air inside the actuator housing 1 through the ventilation openings 3542, thereby improving the drying effect.

[0026] In some embodiments, a support 33 is fixedly installed at one end of the electromagnetic coil 34. An electromagnetic pole 32 for driving the electromagnetic coil 34 to rotate is provided at the top of the support 33. The electromagnetic pole 32 is electrically connected to the built-in power supply of the actuator housing 1 through a conductive sheet 31.

[0027] Among them, when conducting electricity through the conductive sheet 31 and cooperating with the electromagnetic pole 32, a magnetic field can be generated around the electromagnetic coil 34, and the electromagnetic coil 34 can be made to rotate. The rotating electromagnetic coil 34 enables the electric actuator to respond quickly. This precise control improves the flexibility and applicability of the electric actuator.

[0028] In some embodiments, a cavity 3543 is formed inside the drying rod body 3541. A resin column 3544 is installed inside the cavity 3543. A plurality of shielding plates 3545 for shielding external magnetic field interference are installed on the surface of the resin column 3544 close to the ventilation openings 3542.

[0029] Among them, the resin column 3544 has a high porosity and a large specific surface area, which is conducive to the full contact and reaction between substances and the resin. In the electric actuator, this can enhance the adsorption capacity for moisture and harmful gases. Moreover, the resin in the resin column 3544 can selectively adsorb specific ions or molecules in the solution, which helps to remove specific pollutants inside the actuator and improve the cleanliness and operating efficiency of the device. Through the design of the shielding plate 3545, the influence of the external magnetic field on the internal magnetic field of the actuator is effectively reduced, and the stability of the actuator is improved.

[0030] In some embodiments, a limiting iron block 355 is slidably installed through the inner bottom wall of the actuator housing 1, and the limiting iron block 355 is arranged at the bottom end of the drying rod body 3541. A first magnetic block 357 is slidably installed inside the inner bottom wall of the actuator housing 1. A first spring 358 is fixedly installed between the first magnetic block 357 and the inner bottom wall of the actuator housing 1. One end of the first magnetic block 357 is fixedly installed with a limiting rod 359, and the limiting rod 359 slidably penetrates through the inner bottom wall of the actuator housing 1.

[0031] Among them, when the drying rod body 3541 is installed and used, through the elastic force of the first spring 358 and the adsorption capacity between the first magnetic block 357 and the limiting iron block 355, the drying rod body 3541 can be stably installed inside the actuator housing 1, and it is more convenient to install and disassemble and replace the drying rod body 3541. By setting the first spring 358, the stable connection between the first magnetic block 357 and the limiting iron block 355 can be enhanced, and the first magnetic block 357 can be limited by the limiting rod 359.

[0032] In some embodiments, a sealing plate 356 for closing the internal space of the actuator housing 1 is fixedly installed at the bottom ends of the plurality of limiting iron blocks 355.

[0033] Among them, the internal space of the actuator housing 1 can be closed by the sealing plate 356 to avoid moisture and gas pollution.

[0034] In some embodiments, a protection mechanism 4 is arranged inside the actuator housing 1. The protection mechanism 4 includes a mounting plate 42 installed inside the actuator housing 1. An electric socket 43 electrically connected to the built-in power supply is arranged inside the mounting plate 42. An electric plug 41 is inserted near the electric socket 43 on the mounting plate 42. A limiting component 44 is arranged inside the mounting plate 42. The limiting component 44 includes a second magnetic block 442 slidably installed inside the mounting plate 42. An auxiliary iron block 441 is installed on the surface of the electric plug 41 near the second magnetic block 442. A second spring 443 is fixedly installed between the second magnetic block 442 and the inner wall of the mounting plate 42.

[0035] Among them, when the electrical components inside the actuator housing 1 are powered on, by inserting the electrical plug 41, the electrical plug 41 is engaged with the electrical socket 43 for power supply. At this time, the electromagnetic induction column 445 is powered on and the second magnet 442 is magnetized, so that the second magnet 442 attracts the auxiliary iron block 441. At this time, the second magnet 442 can limit the position of the electrical plug 41, achieving stable positioning of the electrical plug 41 and ensuring the stability and reliability of power output; the design of the second spring 443 enables the limiting component 44 to have a certain elasticity and can adapt to the power output requirements under different working conditions.

[0036] In some embodiments, an electromagnetic induction column 445 is slidably installed inside the mounting plate 42. One end of the electromagnetic induction column 445 is slidably installed inside the second magnet 442. The top end of the electromagnetic induction column 445 is electrically connected to the electrical socket 43 through a built-in power supply. A first bevel gear 444 is threadedly installed on the outer surface of the electromagnetic induction column 445. A second bevel gear 446 is rotatably installed inside the mounting plate 42. The first bevel gear 444 and the second bevel gear 446 are meshed, and an auxiliary turntable 4410 is fixedly installed at one end of the second bevel gear 446.

[0037] Among them, when the electrical plug 41 gets stuck or cannot be pulled out, at this time, the auxiliary turntable 4410 can be manually rotated. The auxiliary turntable 4410 drives the second bevel gear 446 to rotate. The second bevel gear 446 drives the first bevel gear 444 to rotate. The first bevel gear 444 drives the electromagnetic induction column 445 to move upward. At this time, the electromagnetic induction column 445 will move away from the second magnet 442, enabling the electrical plug 41 to be stably removed, thereby improving the operability of the actuator.

[0038] In some embodiments, an oil storage tank 448 is provided inside the mounting plate 42, and one end of the oil storage tank 448 communicates with the space where the second bevel gear 446 is located. A spiral impeller 447 is rotatably installed inside the oil storage tank 448, and a belt 449 is installed for transmission between the spiral impeller 447 and the auxiliary turntable 4410.

[0039] Among them, by manually rotating the auxiliary turntable 4410 and through the cooperation of the spiral impeller 447 and the belt 449, lubrication protection of the gears inside the mounting plate 42 is achieved, preventing jamming and wear problems caused by long-term operation, and avoiding dangers caused by the mechanical operation being difficult to proceed smoothly.

[0040] In some embodiments, a drive shaft 5 is provided inside the actuator housing 1. A motor 2 for starting the drive shaft 5 is installed on one side of the actuator housing 1, and the drive shaft 5 is located in the middle of the electromagnetic coil 34.

[0041] Among them, the cooperation between the motor 2 and the drive shaft 5 realizes the power output and precise control of the actuator; the design of the electromagnetic coil 34 at the middle position of the drive shaft 5 enables the magnetic field to act on the drive shaft 5 more effectively, improving the response speed and precision of the actuator.

[0042] The above are only specific embodiments of the present invention, but the technical features of the present invention are not limited thereto. Any simple changes, equivalent substitutions or modifications made based on the present invention to solve substantially the same technical problems and achieve substantially the same technical effects are all covered by the protection scope of the present invention.

Claims

1. An adjustable linear electric actuator, comprising an actuator housing (1), characterized in that: Inside the actuator housing (1), a drying mechanism (3) with an electromagnetic coil (34) is provided. The drying mechanism (3) includes an electromagnetic coil (34) rotatably installed inside the actuator housing (1) for precisely controlling the output displacement of the actuator. The drying mechanism (3) further includes a drying component (35). Inside the actuator housing (1), a support plate (351) is installed. At the bottom end of the support plate (351), a fixing plate (352) is fixedly installed. The drying component (35) is arranged at the bottom end of the fixing plate (352). On the surface of the drying component (35) close to the electromagnetic coil (34), an arc-shaped magnetic plate (353) is installed for driving the rotation of the drying rod body (3541) in cooperation with the electromagnetic coil (34). The drying component (35) includes a drying part (354). The drying part (354) includes a drying rod body (3541) installed at the bottom end of the fixing plate (352) for moisture-proof and anti-corrosion. A plurality of inverted conical ventilation openings (3542) are formed on the surface of the drying rod body (3541).

2. The adjustable linear electric actuator according to claim 1, characterized in that: One end of the electromagnetic coil (34) is fixedly installed with a support member (33). At the top end of the support member (33), an electromagnetic pole (32) for driving the rotation of the electromagnetic coil (34) is provided. The electromagnetic pole (32) is electrically connected to the built-in power supply of the actuator housing (1) through a conductive sheet (31).

3. The adjustable linear electric actuator according to claim 1, wherein: Inside the drying rod body (3541), a cavity (3543) is formed. Inside the cavity (3543), a resin column (3544) is installed. On the surface of the resin column (3544) close to the ventilation opening (3542), a plurality of shielding plates (3545) for shielding external magnetic field interference are installed.

4. An adjustable linear electric actuator according to claim 1, characterized in that: A limiting iron block (355) is slidably penetrated and installed on the inner bottom wall of the actuator housing (1), and the limiting iron block (355) is arranged at the bottom end of the drying rod body (3541). Inside the inner bottom wall of the actuator housing (1), a first magnetic block (357) is slidably installed. A first spring (358) is fixedly installed between the first magnetic block (357) and the inner bottom wall of the actuator housing (1). One end of the first magnetic block (357) is fixedly installed with a limiting rod (359), and the limiting rod (359) slidably penetrates the inner bottom wall of the actuator housing (1).

5. An adjustable linear electric actuator according to claim 4, characterized in that: At the bottom ends of a plurality of the limiting iron blocks (355), a sealing plate (356) for closing the internal space of the actuator housing (1) is fixedly installed.

6. An adjustable linear electric actuator according to claim 1, characterized in that: Inside the actuator housing (1), a protection mechanism (4) is provided. The protection mechanism (4) includes a mounting plate (42) installed inside the actuator housing (1). Inside the mounting plate (42), an electrical socket (43) is electrically connected to the built-in power supply. Near the electrical socket (43) on the mounting plate (42), an electrical plug (41) is inserted. Inside the mounting plate (42), a limiting component (44) is provided. The limiting component (44) includes a second magnetic block (442) slidably installed inside the mounting plate (42). On the surface of the electrical plug (41) near the second magnetic block (442), an auxiliary iron block (441) is installed. A second spring (443) is fixedly installed between the second magnetic block (442) and the inner wall of the mounting plate (42).

7. An adjustable linear electric actuator according to claim 6, characterized in that: Inside the mounting plate (42), an electromagnetic induction column (445) is slidably installed. One end of the electromagnetic induction column (445) is slidably installed inside the second magnetic block (442). The top of the electromagnetic induction column (445) is electrically connected to the electrical socket (43) through the built-in power supply. A first bevel gear (444) is threadedly installed on the outer surface of the electromagnetic induction column (445). Inside the mounting plate (42), a second bevel gear (446) is rotatably installed. The first bevel gear (444) and the second bevel gear (446) are meshed. One end of the second bevel gear (446) is fixedly installed with an auxiliary turntable (4410).

8. An adjustable linear electric actuator according to claim 7, characterized in that: Inside the mounting plate (42), an oil storage tank (448) is provided. One end of the oil storage tank (448) is communicated with the space where the second bevel gear (446) is located. Inside the oil storage tank (448), a spiral impeller (447) is rotatably installed. A belt (449) is installed for transmission between the spiral impeller (447) and the auxiliary turntable (4410).

9. An adjustable linear electric actuator according to claim 1, characterized in that: Inside the actuator housing (1), a drive shaft (5) is provided. On one side of the actuator housing (1), a motor (2) for starting the drive shaft (5) is installed. And the drive shaft (5) is located at the middle position of the electromagnetic coil (34).

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