Straight-stroke electric actuating mechanism

Abstract

The utility model relates to the field of industrial automation, and discloses a straight-stroke electric actuating mechanism, which comprises a driving box, and is characterized in that an actuating plate is arranged at one end of the driving box, a mounting plate is arranged at one end, far away from the driving box, of the actuating plate, a fixing rod is arranged between the mounting plate and the driving box, a threaded screw rod is arranged in the actuating plate, and the straight-stroke electric actuating mechanism further comprises a motor, the motor is arranged at the end, away from the mounting plate, of the driving box and used for controlling the threaded lead screw to rotate, and the magnetic force mounting assembly is arranged in the driving box and used for connecting the motor and the threaded lead screw. The maintainability and the reliability of equipment are improved, and the normal operation of a production line is ensured.

Description

Technical Field

[0001] The utility model relates to the field of industrial automation, in particular to a linear travel electric actuator. Background Art

[0002] As an important part of the automation control system, the linear electric actuator has the ability to adjust the position quickly and accurately, and has become one of the key technologies of modern industrial automation. Its working principle is based on the rotation of the motor to generate linear motion. Through the rotation of the motor rotor, the electrical energy is converted into mechanical energy, and the rotational motion is converted into linear motion through screw transmission or guide rail guidance. The motor is the key component that drives the actuator to perform linear motion, while the screw transmission device or linear guide is responsible for converting the rotational motion of the motor into linear motion. Existing electric actuators, especially those that combine motor execution and threaded screw actuation, although they play a key role in industrial automation, they also face some technical challenges in practical applications.

[0003] When these mechanisms fail or need repair, a prominent problem is that the motor is extremely difficult to disassemble and repair, mainly due to the complexity of the actuator design and the high degree of tight fit between the components. In this design, the connection between the motor and the actuating component (such as the threaded screw) is often very tight, making it difficult to effectively separate and disassemble the motor and the actuating component when repair or replacement is required. This not only increases the difficulty and time cost of maintenance, but may also cause further damage due to improper operation. For this reason, we proposed a linear travel electric actuator. Utility Model Content

[0004] 1. Technical issues to be resolved

[0005] In view of the deficiencies in the prior art, the utility model provides a linear electric actuator to solve the above-mentioned problems.

[0006] (II) Technical solution

[0007] In order to achieve the above-mentioned purpose, the utility model provides the following technical solutions: a linear electric actuator, comprising a drive box, an actuating plate is arranged at one end of the drive box, a mounting plate is arranged at the end of the actuating plate away from the drive box, a fixing rod is arranged between the mounting plate and the drive box, a threaded screw is arranged inside the actuating plate, and further comprising:

[0008] A motor is arranged at one end of the drive box away from the mounting plate and is used to control the rotation of the threaded screw;

[0009] The magnetic mounting assembly is arranged inside the drive box and is used to connect the motor and the threaded screw.

[0010] Preferably, the drive box is fixedly connected to one end of the fixed rod, the other end of the fixed rod is fixedly connected to the mounting plate, a sliding shaft is fixedly connected to the position of the fixed rod inside the actuating plate, and the actuating plate is slidably connected to the fixed rod through the sliding shaft.

[0011] Preferably, the mounting plate is arranged in an L shape.

[0012] Preferably, a plurality of mounting holes are provided on the outside of the drive box and the mounting plate.

[0013] Preferably, the motor is fixedly connected to the drive box by bolts, the output end of the motor extends into the interior of the drive box, and a circular groove is provided inside the drive box at a position corresponding to the output end of the motor.

[0014] Preferably, the magnetic mounting assembly includes a magnetic box, a magnetic block, a magnetic strip, an iron bar and a mounting groove, one end of the magnetic box is fixedly connected to the output end of the motor, the outer wall of the magnetic box is rotatably connected to the inner wall of the circular groove, the magnetic block is fixedly connected to one end of the interior of the magnetic box close to the motor, a plurality of magnetic strips are provided and are surrounded on the inner wall of the magnetic box, the plurality of magnetic strips are respectively fixedly connected to the inner wall of the magnetic box, the iron bars are respectively provided corresponding to the plurality of magnetic strips, and the iron bars are fixedly connected to the outer wall of the mounting cylinder.

[0015] Preferably, the magnetic mounting assembly also includes a mounting groove, which is opened corresponding to the threaded screw, and a threaded hole is opened inside the actuator plate at a position corresponding to the threaded screw, the actuator plate and the threaded screw are threadedly connected together, one end of the threaded screw is fixedly connected to the inside of the mounting groove, and a fixed shaft is fixedly installed at the inner center of one end of the mounting plate close to the drive box, and the other end of the threaded screw is fixedly connected to the inner shaft of the fixed shaft.

[0016] (III) Beneficial effects

[0017] Compared with the prior art, the utility model provides a linear electric actuator, which has the following beneficial effects:

[0018] 1. This linear electric actuator realizes non-contact power transmission between the motor and the screw rod through the design of magnetic mounting components. This magnetic transmission method not only reduces mechanical friction and wear, reduces energy loss, but also improves the stability and reliability of power transmission. Compared with traditional mechanical transmission methods, magnetic transmission is more resistant to external interference and vibration, thereby ensuring the stable operation of the actuator in complex environments.

[0019] 2. The modular design of the magnetic mounting assembly of the linear electric actuator makes the connection between the components simpler and facilitates maintenance and replacement when necessary. When the actuator fails or parts need to be replaced, maintenance personnel can quickly disassemble and install related parts, reducing the difficulty and time cost of maintenance. In addition, the magnetic mounting assembly has a simple structure and is easy to clean and maintain, further improving the service life and performance stability of the actuator. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the structure of the utility model;

[0021] Figure 2 This is a cross-sectional schematic diagram of the drive box of the utility model;

[0022] Figure 3 This is a schematic diagram of the structure of the magnetic installation component of the utility model.

[0023] In the figure: 1. drive box; 2. actuator plate; 3. mounting plate; 4. fixing rod; 5. sliding shaft; 6. fixing shaft; 7. threaded screw; 8. mounting hole; 9. motor; 10. magnetic box; 11. magnetic block; 12. magnetic strip; 13. mounting cylinder; 14. iron bar; 15. mounting groove. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0025] See also Figure 1-3 , a linear electric actuator, comprising a drive box 1, an actuating plate 2 is arranged at one end of the drive box 1, a mounting plate 3 is arranged at one end of the actuating plate 2 away from the drive box 1, a fixing rod 4 is arranged between the mounting plate 3 and the drive box 1, a threaded screw 7 is arranged inside the actuating plate 2, and further comprising:

[0026] The motor 9 is arranged at one end of the driving box 1 away from the mounting plate 3 and is used to control the rotation of the threaded screw 7;

[0027] The magnetic mounting assembly is arranged inside the drive box 1 and is used to connect the motor 9 and the threaded screw 7. It can effectively solve the problem that the motor of the electric actuator is difficult to separate and disassemble from the actuating assembly during maintenance, improve the maintainability and reliability of the equipment, and ensure the normal operation of the production line.

[0028] Furthermore, the drive box 1 is fixedly connected to one end of the fixed rod 4, the other end of the fixed rod 4 is fixedly connected to the mounting plate 3, and a sliding shaft 5 is fixedly connected to the position of the fixed rod 4 inside the actuating plate 2, and the actuating plate 2 is slidably connected to the fixed rod 4 through the sliding shaft 5.

[0029] Furthermore, the mounting plate 3 is arranged in an L shape.

[0030] Furthermore, a plurality of mounting holes 8 are provided on the outside of the drive box 1 and the mounting plate 3. The plurality of mounting holes 8 provided on the outside of the mounting plate 3 facilitate the installation and fixation of the entire actuator, so that it can be easily integrated into various industrial automation systems.

[0031] Furthermore, the motor 9 is fixedly connected to the drive box 1 by bolts, and the output end of the motor 9 extends to the inside of the drive box 1. A circular groove is provided inside the drive box 1 at a position corresponding to the output end of the motor 9. First, the motor 9 is fixed to one end of the drive box 1 and is firmly connected by bolts. When the motor 9 receives a start signal, its output end begins to rotate. Due to the presence of the magnetic mounting assembly, the rotational power of the motor 9 is transmitted to the threaded screw 7 in a non-contact manner. The core part of the magnetic mounting assembly is the magnetic box 10, one end of which is fixedly connected to the output end of the motor 9. A magnetic block 11 is fixed at one end of the magnetic box near the motor 9, and a plurality of magnetic strips 12 are arranged around the inner wall of the magnetic box 10. At the same time, an iron strip 14 corresponding to the magnetic strip 12 is fixed on the outer wall of the mounting tube 13. When the motor 9 rotates, the magnetic box 10 rotates accordingly, and the magnetic block 11 and the magnetic strip 12 and the iron strip 14 are connected to each other. The magnetic force between 14 transmits the rotational force to the mounting groove 15. This magnetic transmission method not only reduces mechanical friction, but also improves transmission efficiency. One end of the threaded screw 7 is fixedly connected inside the mounting groove 15, and a threaded hole matching it is opened at the position corresponding to the threaded screw 7 inside the actuator plate 2. Therefore, when the mounting groove 15 rotates through the magnetic force, the threaded screw 7 will also rotate in the threaded hole. Since the other end of the threaded screw is connected to the actuator plate 2 through the fixed shaft 6, the actuator plate 2 will achieve linear motion with the rotation of the threaded screw 7. This motion conversion mechanism enables the actuator to effectively convert the rotational motion of the motor 9 into linear motion. At the same time, the drive box 1 and the mounting plate 3 are stably connected through the fixed rod 4 and the sliding shaft 5, and the actuator plate 2 is allowed to slide linearly on the sliding shaft 5. This structural design ensures the stability and reliability of the actuator during movement.

[0032] Furthermore, the magnetic mounting assembly includes a magnetic box 10, a magnetic block 11, a magnetic strip 12, an iron strip 14 and a mounting groove 15. One end of the magnetic box 10 is fixedly connected to the output end of the motor 9, the outer wall of the magnetic box 10 is rotatably connected to the inner wall of the circular groove, the magnetic block 11 is fixedly connected to one end of the interior of the magnetic box 10 close to the motor 9, a plurality of magnetic strips 12 are arranged and surrounded on the inner wall of the magnetic box 10, and the plurality of magnetic strips 12 are respectively fixedly connected to the inner wall of the magnetic box 10, and the iron strips 14 are respectively arranged corresponding to the plurality of magnetic strips 12, and the iron strips 14 are fixedly connected to the outer wall of the mounting tube 13.

[0033] Furthermore, the magnetic mounting assembly also includes a mounting groove 15, which is opened corresponding to the threaded screw 7, and a threaded hole is opened at a position corresponding to the threaded screw 7 inside the actuator plate 2. The actuator plate 2 is threadedly connected to the threaded screw 7, and one end of the threaded screw 7 is fixedly connected to the inside of the mounting groove 15. A fixed shaft 6 is fixedly installed at the inner center of one end of the mounting plate 3 close to the drive box 1, and the other end of the threaded screw 7 is fixedly connected to the inner shaft of the fixed shaft 6.

[0034] Working principle: First, the motor 9 is fixed to one end of the drive box 1 and is firmly connected by bolts. When the motor 9 receives the start signal, its output end begins to rotate. Due to the presence of the magnetic mounting assembly, the rotational power of the motor 9 can be transmitted to the threaded screw 7 in a non-contact manner. The core part of the magnetic mounting assembly is the magnetic box 10, one end of which is fixedly connected to the output end of the motor 9. A magnetic block 11 is fixed to one end of the magnetic box near the motor 9, and a plurality of magnetic strips 12 are arranged around the inner wall of the magnetic box 10. At the same time, an iron strip 14 corresponding to the magnetic strip 12 is fixed to the outer wall of the mounting cylinder 13. When the motor 9 rotates, the magnetic box 10 rotates accordingly, and the rotational force is transmitted to the mounting groove 15 through the magnetic force between the magnetic block 11 and the magnetic strip 12 and the iron strip 14. This magnetic transmission method not only reduces mechanical friction, but also improves transmission efficiency. One end of the threaded screw 7 is fixedly connected to the inside of the mounting groove 15, and a position corresponding to the threaded screw 7 inside the actuator plate 2 is opened. There is a threaded hole matching it, so when the mounting groove 15 rotates through the magnetic force, the threaded screw 7 will also rotate in the threaded hole. Since the other end of the threaded screw is connected to the actuating plate 2 through the fixed shaft 6, the actuating plate 2 will achieve linear motion as the threaded screw 7 rotates. This motion conversion mechanism enables the actuator to effectively convert the rotational motion of the motor 9 into linear motion. At the same time, the drive box 1 and the mounting plate 3 are stably connected through the fixed rod 4 and the sliding shaft 5, and the actuating plate 2 is allowed to slide linearly on the sliding shaft 5. This structural design ensures the stability and reliability of the actuator during movement. In addition, the multiple mounting holes 8 opened on the outside of the mounting plate 3 facilitate the installation and fixation of the entire actuator, so that it can be easily integrated into various industrial automation systems. The device can effectively solve the problem that the motor of the electric actuator is difficult to separate and disassemble from the actuating assembly during maintenance, improve the maintainability and reliability of the equipment, and ensure the normal operation of the production line.

[0035] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A linear electric actuator, comprising a drive box (1), characterized in that: An actuating plate (2) is arranged at one end of the driving box (1), a mounting plate (3) is arranged at one end of the actuating plate (2) away from the driving box (1), a fixing rod (4) is arranged between the mounting plate (3) and the driving box (1), a threaded screw (7) is arranged inside the actuating plate (2), and further comprises: A motor (9) is arranged at one end of the drive box (1) away from the mounting plate (3) and is used to control the rotation of the threaded screw (7); The magnetic mounting assembly is arranged inside the drive box (1) and is used to connect the motor (9) and the threaded screw (7).

2. The linear electric actuator according to claim 1, characterized in that: The drive box (1) is fixedly connected to one end of a fixed rod (4), the other end of the fixed rod (4) is fixedly connected to a mounting plate (3), a sliding shaft (5) is fixedly connected to a position inside the actuating plate (2) corresponding to the fixed rod (4), and the actuating plate (2) is slidably connected to the fixed rod (4) via the sliding shaft (5).

3. The linear electric actuator according to claim 1, characterized in that: The mounting plate (3) is arranged in an L shape.

4. The linear electric actuator according to claim 1, characterized in that: A plurality of mounting holes (8) are provided on the outside of the drive box (1) and the mounting plate (3).

5. The linear electric actuator according to claim 1, characterized in that: The motor (9) is fixedly connected to the drive box (1) by bolts, the output end of the motor (9) extends into the interior of the drive box (1), and a circular groove is provided inside the drive box (1) at a position corresponding to the output end of the motor (9).

6. The linear electric actuator according to claim 5, characterized in that: The magnetic installation assembly comprises a magnetic box (10), a magnetic block (11), a magnetic strip (12), an iron strip (14) and an installation groove (15); one end of the magnetic box (10) is fixedly connected to the output end of the motor (9); the outer wall of the magnetic box (10) is rotatably connected to the inner wall of the circular groove; the magnetic block (11) is fixedly connected to one end of the magnetic box (10) near the motor (9); a plurality of magnetic strips (12) are arranged and arranged around the inner wall of the magnetic box (10); the plurality of magnetic strips (12) are respectively fixedly connected to the inner wall of the magnetic box (10); the iron strips (14) are respectively arranged corresponding to the plurality of magnetic strips (12); and the iron strips (14) are fixedly connected to the outer wall of the installation tube (13).

7. The linear electric actuator according to claim 6, characterized in that: The magnetic mounting assembly further comprises a mounting groove (15), the mounting groove (15) being opened corresponding to the threaded screw (7), a threaded hole being opened inside the actuating plate (2) at a position corresponding to the threaded screw (7), the actuating plate (2) being threadedly connected with the threaded screw (7), one end of the threaded screw (7) being fixedly connected inside the mounting groove (15), a fixed shaft (6) being fixedly installed at the inner center of one end of the mounting plate (3) close to the driving box (1), and the other end of the threaded screw (7) being fixedly connected to the inner shaft of the fixed shaft (6).

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