Gear box assembly of electric valve actuator

Abstract

The utility model discloses a gear box assembly of an electric valve actuator. According to the technical scheme, the device comprises a supporting assembly, a gear set arranged in the supporting assembly and a motor arranged outside the supporting assembly, the motor comprises an input shaft, and the gear set comprises a first-stage transmission shaft, a second-stage transmission shaft, a third-stage transmission shaft, a fourth-stage transmission shaft, a fifth-stage transmission shaft, a sixth-stage transmission shaft, an output large gear and an output shaft. And an input pinion is mounted on the input shaft. According to the scheme, the transmission ratio is high, the output torque can be improved, the high transmission ratio means that the rotating speed of the input shaft and the rotating speed of the input pinion are low, and therefore higher output torque is achieved in the transmission mode. Under the condition of high transmission ratio, the rotating speed of the input shaft and the rotating speed of the input pinion are reduced, which means that the rotating speed of the motor for driving the input pinion can also be correspondingly reduced. Energy consumption can be reduced by reducing the rotating speed of the motor, and the service life of the motor can be prolonged.

Description

Technical Field

[0001] This utility model relates to the field of gearbox technology, and in particular to a gearbox assembly for an electric valve actuator. Background Technology

[0002] The gearbox in an electric valve actuator plays a crucial role in matching speeds and transmitting torque between the prime mover and the driven machine or actuator. As a relatively precise piece of machinery, the gearbox is relatively complex to manufacture. Current electric valve actuators have a low gear ratio, leading to an increase in the relative speed between gears, which exacerbates gear wear. Over long-term operation, this not only affects the service life of the gears but may also cause transmission failure due to excessive wear. Utility Model Content

[0003] In view of the shortcomings of the existing technology, the main purpose of this utility model is to provide a gearbox assembly for an electric valve actuator with a high transmission ratio.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a gearbox assembly for an electric valve actuator, comprising a support assembly, a gear set disposed within the support assembly, and a motor disposed outside the support assembly. The motor includes an input shaft. The gear set includes a first-stage transmission shaft, a second-stage rotating shaft, a third-stage transmission shaft, a fourth-stage transmission shaft, a fifth-stage transmission shaft, a sixth-stage transmission shaft, an output large gear, and an output shaft. An input small gear is mounted on the input shaft. A first-stage reduction large gear and a first-stage reduction small gear are respectively mounted at both ends of the first-stage transmission shaft. A second-stage reduction large gear and a second-stage reduction small gear are respectively mounted at both ends of the second-stage transmission shaft. A third-stage reduction large gear and a third-stage reduction small gear are respectively mounted at both ends of the third-stage transmission shaft. The fourth-stage transmission shaft... The fifth stage transmission shaft has a four-stage reduction gear and a four-stage reduction pinion mounted at both ends. The sixth stage transmission shaft has a six-stage reduction gear and a six-stage reduction pinion mounted at both ends. The seventh stage transmission shaft includes an output gear mounted on an output shaft. The first-stage reduction gear meshes with the input pinion. The first-stage reduction pinion meshes with the second-stage reduction gear. The second-stage reduction pinion meshes with the third-stage reduction gear. The third-stage reduction pinion meshes with the fourth-stage reduction gear. The fourth-stage reduction pinion meshes with the fifth-stage reduction gear. The fifth-stage reduction pinion meshes with the sixth-stage reduction gear. The sixth-stage reduction pinion meshes with the output gear.

[0005] Preferably, the support assembly includes an upper mounting plate, a lower mounting plate, and upper and lower mounting columns fixed on the lower mounting plate, wherein the first-stage drive shaft, the second-stage rotating shaft, the third-stage drive shaft, the fourth-stage drive shaft, the fifth-stage drive shaft, and the sixth-stage drive shaft are respectively inserted between the upper mounting plate and the lower mounting plate.

[0006] Preferably, the input pinion has 9 teeth and a module of 0.5; the first-stage reduction gear has 9 teeth and a module of 0.5; the first-stage reduction pinion has 10 teeth and a module of 0.5; the second-stage reduction gear has 26 teeth and a module of 0.5; the second-stage reduction pinion has 10 teeth and a module of 0.5; the third-stage reduction gear has 26 teeth and a module of 0.5; and the third-stage reduction pinion has 10 teeth and a module of 0.5. The fourth-stage reduction gear has 32 teeth and a module of 0.5; the fourth-stage reduction pinion has 9 teeth and a module of 0.6; the fifth-stage reduction gear has 41 teeth and a module of 0.6; the fifth-stage reduction pinion has 9 teeth and a module of 0.8; the sixth-stage reduction gear has 44 teeth and a module of 0.8; the sixth-stage reduction pinion has 11 teeth and a module of 1.25; and the output gear has 45 teeth and a module of 1.25.

[0007] This invention offers the following advantages over existing technologies: Increased output torque: A higher transmission ratio means lower rotational speeds of the input shaft and input pinion. In this transmission method, the input pinion can more effectively transmit torque to other driven gears, resulting in higher output torque. Reduced motor speed requirements: With a high transmission ratio, the speeds of the input shaft and input pinion are reduced, meaning the speed of the motor driving the input pinion can also be reduced accordingly. Lowering the motor speed not only reduces energy consumption but also extends the motor's lifespan. Furthermore, lower-speed motors are easier to control precisely, improving the stability and reliability of the equipment. Attached Figure Description

[0008] Figure 1 This is a schematic diagram of the gearbox assembly of an electric valve actuator according to the present invention;

[0009] Figure 2 This is an exploded view of the gearbox assembly of an electric valve actuator according to the present invention;

[0010] In the diagram: 1. Upper mounting plate; 2. Lower mounting plate; 3. Mounting columns of upper and lower plates; 4. Motor; 5. Input shaft; 6. Input pinion; 7. First-stage transmission shaft; 8. Second-stage rotating shaft; 9. Third-stage transmission shaft; 10. Fourth-stage transmission shaft; 11. Fifth-stage transmission shaft; 12. Sixth-stage transmission shaft; 13. Output large gear; 14. Output shaft. Detailed Implementation

[0011] The present invention will be further described below with reference to the accompanying drawings.

[0012] like Figure 1 As shown, a gearbox assembly for an electric valve actuator includes a support assembly, a gear set disposed within the support assembly, and a motor 4 disposed outside the support assembly. The motor 4 includes an input shaft 5. The gear set includes a first-stage transmission shaft 7, a second-stage rotating shaft 8, a third-stage transmission shaft 9, a fourth-stage transmission shaft 10, a fifth-stage transmission shaft 11, a sixth-stage transmission shaft 12, an output large gear 13, and an output shaft 14. An input small gear 6 is mounted on the input shaft 5. A first-stage reduction large gear and a first-stage reduction small gear are respectively mounted at both ends of the first-stage transmission shaft 7. A second-stage reduction large gear and a second-stage reduction small gear are respectively mounted at both ends of the second-stage transmission shaft 7. A third-stage reduction large gear and a third-stage reduction small gear are respectively mounted at both ends of the third-stage transmission shaft 9. A fourth-stage reduction large gear and a fourth-stage reduction small gear are respectively mounted at both ends of the fourth-stage transmission shaft 10. The fifth-stage transmission shaft 11 has a first-stage transmission shaft 7, a second-stage transmission shaft 8, a third-stage transmission shaft 9, a fourth-stage transmission shaft 8, a fifth-stage transmission shaft 9, a sixth-stage transmission shaft 11, and a sixth-stage transmission shaft 12. Do not install a five-stage reduction gear and a five-stage reduction pinion. A six-stage reduction gear and a six-stage reduction pinion are respectively installed at both ends of the sixth-stage transmission shaft 12. The seventh-stage transmission shaft includes an output gear 13 mounted on the output shaft 14. The first-stage reduction gear meshes with the input pinion 6, with a transmission ratio of 2.44. The first-stage reduction pinion meshes with the second-stage reduction gear, with a transmission ratio of 2.60. The second-stage reduction pinion meshes with the third-stage reduction gear, with a transmission ratio of 2.60. The third-stage reduction pinion meshes with the fourth-stage reduction gear, with a transmission ratio of 3.20. The fourth-stage reduction pinion meshes with the fifth-stage reduction gear, with a transmission ratio of 4.56. The fifth-stage reduction pinion meshes with the sixth-stage reduction gear, with a transmission ratio of 4.89. The sixth-stage reduction pinion meshes with the output gear 13, with a transmission ratio of 4.09.

[0013] The advantages of this solution are: increased output torque: a higher transmission ratio means lower speeds for the input shaft 5 and input pinion 6. In this transmission method, the input pinion 6 can more effectively transmit torque to other driven gears, thus achieving higher output torque. Reduced motor 4 speed requirement: with a high transmission ratio, the speeds of the input shaft 5 and input pinion 6 are reduced, meaning the speed of the motor 4 driving the input pinion 6 can also be reduced accordingly. Reducing the motor 4 speed not only reduces energy consumption but also extends the motor 4's lifespan. Furthermore, a lower-speed motor 4 allows for more precise speed control, improving the stability and reliability of the equipment.

[0014] The support assembly includes an upper mounting plate 1, a lower mounting plate 2, and upper and lower mounting columns 3 fixed on the lower mounting plate 2. The first-stage transmission shaft 7, the second-stage rotating shaft 8, the third-stage transmission shaft 9, the fourth-stage transmission shaft 10, the fifth-stage transmission shaft 11, and the sixth-stage transmission shaft 12 are respectively inserted between the upper mounting plate 1 and the lower mounting plate 2.

[0015] The input pinion 6 has 9 teeth and a module of 0.5; the first-stage reduction gear has 9 teeth and a module of 0.5; the first-stage reduction pinion has 10 teeth and a module of 0.5; the second-stage reduction gear has 26 teeth and a module of 0.5; the second-stage reduction pinion has 10 teeth and a module of 0.5; the third-stage reduction gear has 26 teeth and a module of 0.5; the third-stage reduction pinion has 10 teeth and a module of 0.5. The fourth-stage reduction gear has 32 teeth and a module of 0.5; the fourth-stage reduction pinion has 9 teeth and a module of 0.6; the fifth-stage reduction gear has 41 teeth and a module of 0.6; the fifth-stage reduction pinion has 9 teeth and a module of 0.8; the sixth-stage reduction gear has 44 teeth and a module of 0.8; the sixth-stage reduction pinion has 11 teeth and a module of 1.25; and the output gear 13 has 45 teeth and a module of 1.25.

[0016] The above description is merely a preferred embodiment of this utility model. The protection scope of this utility model is not limited to the above embodiments. All technical solutions falling within the scope of this utility model's concept are protected. It should be noted that for those skilled in the art, any improvements and modifications made without departing from the principle of this utility model should also be considered within the protection scope of this utility model.

Claims

1. A gearbox assembly for an electric valve actuator, characterized in that: The device includes a support assembly, a gear set disposed within the support assembly, and a motor disposed outside the support assembly. The motor includes an input shaft. The gear set includes a first-stage transmission shaft, a second-stage transmission shaft, a third-stage transmission shaft, a fourth-stage transmission shaft, a fifth-stage transmission shaft, a sixth-stage transmission shaft, an output large gear, and an output shaft. An input small gear is mounted on the input shaft. A first-stage reduction large gear and a first-stage reduction small gear are respectively mounted at both ends of the first-stage transmission shaft. A second-stage reduction large gear and a second-stage reduction small gear are respectively mounted at both ends of the second-stage transmission shaft. A third-stage reduction large gear and a third-stage reduction small gear are respectively mounted at both ends of the third-stage transmission shaft. A fourth-stage reduction large gear and a fourth-stage reduction small gear are respectively mounted at both ends of the fourth-stage transmission shaft. The transmission shaft has a five-stage reduction pinion, a five-stage reduction gear and a five-stage reduction pinion mounted at both ends, and a six-stage reduction gear and a six-stage reduction pinion mounted at both ends. The output gear is mounted on the output shaft. The first-stage reduction gear meshes with the input pinion, the first-stage reduction pinion meshes with the second-stage reduction gear, the second-stage reduction pinion meshes with the third-stage reduction gear, the third-stage reduction pinion meshes with the fourth-stage reduction gear, the fourth-stage reduction pinion meshes with the fifth-stage reduction gear, the fifth-stage reduction pinion meshes with the sixth-stage reduction gear, and the sixth-stage reduction pinion meshes with the output gear.

2. The gearbox assembly of an electric valve actuator according to claim 1, characterized in that: The support assembly includes an upper mounting plate, a lower mounting plate, and upper and lower mounting columns fixed on the lower mounting plate. The first-stage drive shaft, the second-stage drive shaft, the third-stage drive shaft, the fourth-stage drive shaft, the fifth-stage drive shaft, and the sixth-stage drive shaft are respectively inserted between the upper mounting plate and the lower mounting plate.

3. The gearbox assembly of an electric valve actuator according to claim 1, characterized in that: The input pinion has 9 teeth and a module of 0.5; the first-stage reduction gear has 9 teeth and a module of 0.5; the first-stage reduction pinion has 10 teeth and a module of 0.5; the second-stage reduction gear has 26 teeth and a module of 0.5; the second-stage reduction pinion has 10 teeth and a module of 0.5; the third-stage reduction gear has 26 teeth and a module of 0.5; the third-stage reduction pinion has 10 teeth and a module of 0.

5. The fourth-stage reduction gear has 32 teeth and a module of 0.5; the fourth-stage reduction pinion has 9 teeth and a module of 0.6; the fifth-stage reduction gear has 41 teeth and a module of 0.6; the fifth-stage reduction pinion has 9 teeth and a module of 0.8; the sixth-stage reduction gear has 44 teeth and a module of 0.8; the sixth-stage reduction pinion has 11 teeth and a module of 1.25; and the output gear has 45 teeth and a module of 1.25.

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