An integrated electrically powered device with manual emergency operation for an aircraft

Abstract

The application relates to the field of airplane emergency, in particular to an electric device integrated with a manual emergency operation for an airplane. The electric device comprises an electric motor, a planetary gear assembly, a worm helical gear and a manual interface device. The electric motor is provided with a brake function, that is, the brake is opened when power is on and is closed when power is off. The output form of the electric motor is gear rotation output. The output shaft of the electric motor is engaged with the input shaft of the planetary gear assembly, and the output shaft of the planetary gear assembly serves as the output shaft of the electric device. The teeth on the outer circle of the planetary gear assembly are connected and driven with the manual interface device through the worm helical gear.

Description

Technical Field

[0001] This invention relates to the field of aircraft emergency response, and more particularly to an electric device for aircraft that integrates manual emergency operation. Background Technology

[0002] Electric actuators primarily use electrical energy as their energy source. An electric motor converts electrical energy into mechanical energy for output. A reduction gear then transforms the high-speed, low-torque motion of the electric motor into low-speed, high-torque motion according to a set reduction ratio. Aircraft electric actuators have even higher reliability requirements, needing to continue performing basic functions under various complex conditions (such as power failure or malfunction) to ensure mission continuity.

[0003] Existing electric actuators primarily convert electrical energy into mechanical energy and output mechanical motion. Their drawback is that in the event of power loss or abnormal operation of the motor, the entire actuator will lose its function, leading to task failure and low reliability. Summary of the Invention

[0004] This invention provides an integrated manual emergency operation electric device for aircraft, which solves the problem of low reliability of transmission electric devices in complex environments.

[0005] Technical solution: An integrated manual emergency operation electric device for aircraft is provided, comprising: an electric motor, a planetary gear assembly, a worm gear helical gear, and a manual interface device; The electric motor has a brake function, which means it brakes when the power is off and opens when the power is on; the output of the electric motor is a gear-driven output. The output shaft of the electric motor meshes with the input shaft of the planetary gear assembly, and the output shaft of the planetary gear assembly serves as the output shaft of the electric actuator; the teeth on the outer circumference of the planetary gear assembly are connected to the manual interface device for transmission via a worm gear and helical gear.

[0006] Furthermore, the planetary gear assembly includes: a sun gear, a gear carrier, planet gears, and internal teeth of the internal and external gears; The motor output shaft is fixedly connected to the sun gear; there are three sets of planetary gears, which are mounted on the gear carrier. Each planetary gear can rotate along its own axis and also revolve around the gear carrier axis. The three sets of planetary gears, the sun gear, and the internal teeth mesh together to form a gear pair to transmit motion.

[0007] Furthermore, the internal and external gears are of the internal and external tooth structure, with the external teeth being of the helical gear type.

[0008] Furthermore, the worm gear helical gear includes the worm and the helical gear; The worm and helical gear mesh to form a worm-helical gear pair that transmits motion. The worm-helical gear pair has a self-locking transmission, that is, when the worm is the driving member, the helical gear is the driven member and outputs motion; when the helical gear is the driving member, the worm does not output motion.

[0009] Furthermore, the electric motor is installed inside the housing, and the internal and external gears are fixed inside the housing by bearings at both ends, enabling circular motion. The planetary gear assembly is installed between the electric motor and the internal and external gears, and the gear carrier is axially fixed by bearings and the housing.

[0010] Furthermore, the manual interface device is a gear set with a manual interface and a hexagonal hole. The gear set meshes with a helical gear, and the gear shaft of the last stage of the gear set is designed with a hexagonal hole for connecting with a manual tool during manual operation.

[0011] The present invention has the following advantages: This invention provides an electric device for integrated manual emergency operation in aircraft, which is highly reliable and has a compact structure. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the structure of the present invention.

[0013] Figure 2 This is a side view of the present invention.

[0014] Figure 3 This is a schematic diagram of the planetary gear assembly.

[0015] Figure 4 This is a schematic diagram of the internal gear structure.

[0016] Wherein, 1—electric motor; 2—planetary gear assembly; 3—worm gear helical gear; 4—manual interface device; 5—sun gear; 6—internal and external gears; 7—gear carrier; 8—planetary gears; 9—worm. Detailed Implementation

[0017] The following combination Figures 1-4 The present invention will be described in detail as follows: This invention provides an electric device for integrated manual emergency operation in aircraft, such as... Figure 1-4 As shown, it includes a motor 1, a planetary gear assembly 2, a worm gear helical gear 3, and a manual interface device 4. Wherein: The electric motor is the power input device for the entire electric device and must be a brake with a power-off braking function. The output form of the electric motor is gear rotation output. The planetary gear assembly includes two stages of planetary gears, both of which have the same function, including a sun gear 5, planet gears 8, and internal and external gears 6. The sun gear is integrated with the output shaft of the electric motor, serving as the output gear of the electric device. There are three sets of planet gears, evenly distributed and mounted on the gear carrier. All three sets of planet gears mesh with the sun gear simultaneously. The gear carrier is a shaft-like component. The previous stage gear carrier serves as the input for the next stage of planetary gears, and the next stage planetary carrier directly serves as the output shaft for outputting motion. The internal and external gears have an internal and external tooth structure. The internal teeth mesh with the planetary gears, and the external teeth are helical gears. The worm gear helical gear 3 consists of a worm 9 and a helical gear. The helical gear is integrated on the internal and external gears, which is the external gear of the internal and external gears. The worm and the helical gear form a transmission pair and must have self-locking transmission (when the worm is the driving member, the helical gear is the driven member and outputs motion; when the helical gear is the driving member, the worm does not output motion).

[0018] The manual interface device 4 is a gear with a hexagonal internal hole for manual interface. It meshes with the helical gears of the gear set and the internal and external gears. The hexagonal internal hole is designed on the gear shaft of the last stage for docking with manual tools during manual operation.

[0019] The electric motor 1 has a brake (power off braking and power on opening) function and is fixedly connected to the sun gear 5. The three sets of planetary gears 8 in the planetary gear assembly 2 mesh simultaneously to form a gear pair to transmit motion.

[0020] The planetary gear assembly 2 consists of the sun gear 5, planet gears 8, and internal and external gears 6. There are three sets of planet gears 8, which are mounted on the gear carrier 7. Each planet gear 8 can rotate on its own axis and also revolve around the gear carrier axis. The internal teeth of the three sets of planet gears 8, the sun gear 5, and the internal and external gears 6 mesh simultaneously to form a gear pair to transmit motion. The internal and external gears 6 have an internal and external tooth structure, with the external teeth being helical gears.

[0021] The worm gear helical gear 3 is formed by the meshing of the worm 9 and the internal and external gears 6 to form a worm gear helical gear pair that transmits motion. The worm gear helical gear 3 must have self-locking transmission (when the worm is the driving member, the helical gear is the driven member and outputs motion; when the helical gear is the driving member, the worm does not output motion).

[0022] The electric motor 1 is installed inside the product housing. The internal and external gears 6 are fixed inside the housing by bearings at both ends and can achieve circular motion. The planetary gear assembly is installed between the electric motor 1 and the internal and external gears. The gear carrier 7 in the planetary gear assembly is axially fixed by bearings and the housing. The worm gear helical gear 3 and the manual interface device 4 are both installed inside the housing by bearings, etc. Finally, the electric motor and the others are all fastened with screws.

[0023] When the motor 1 is powered on, the internal and external gears 6 are fixed in place due to the self-locking characteristic of the worm gear helical gear 3. The movement of the motor is output and transmitted through the planetary gear assembly 2. When the manual interface device 4 is driven to rotate by a conventional manual tool, the output shaft of the motor 1 is not working due to the power failure brake. The manual interface device 4 will transmit movement through the worm gear helical gear and finally output movement through the planetary gear assembly 2, realizing the manual emergency operation of the product and improving the reliability of the product.

Claims

1. An electric device for integrated manual emergency operation in aircraft, characterized in that, include: Electric motor (1), planetary gear assembly (2), worm gear helical gear (3), manual interface device (4); The electric motor (1) has a brake function, that is, it brakes when the power is off and opens when the power is on; the output form of the electric motor is gear rotation output; The output shaft of the electric motor meshes with the input shaft of the planetary gear assembly (2), and the output shaft of the planetary gear assembly (2) serves as the output shaft of the electric device; the teeth of the outer circle of the planetary gear assembly (2) are connected to the manual interface device (4) for transmission through the worm gear (3).

2. The electric device according to claim 1, characterized in that, The planetary gear assembly (2) includes two stages of planetary gears, which have the same function. The planetary gears include: a sun gear (5), a gear carrier (7), planet gears (8), and the internal teeth of the internal and external gears (6). The output shaft of the electric motor (1) is fixedly connected to the sun gear (5); there are three sets of planetary gears (8), which are installed on the gear carrier (7), and each planetary gear (8) can rotate along its axis and revolve around the gear carrier axis. The three sets of planetary gears (8), the sun gear (5), and the internal teeth mesh together to form a gear pair to transmit motion.

3. The electric device according to claim 2, characterized in that, The internal and external gears (6) are of internal and external tooth structure, with the external teeth being of helical gear form.

4. The electric device according to claim 3, characterized in that, The worm gear helical gear (3) includes the worm (9) and the helical gear; The worm (9) and the helical gear mesh to form a worm-helical gear pair to transmit motion. The worm-helical gear (3) has a self-locking transmission, that is, when the worm is the driving member, the helical gear is the driven member and outputs motion; when the helical gear is the driving member, the worm does not output motion.

5. The electric device according to claim 4, characterized in that, The motor (1) is installed inside the housing, and the internal and external gears (6) are fixed inside the housing by bearings at both ends and can achieve circular motion. The planetary gear assembly is installed between the motor (1) and the internal and external gears, and the gear carrier (7) is axially fixed by bearings and housing.

6. The electric device according to claim 5, characterized in that, The manual interface device (4) is a gear set with a manual interface and an internal hexagonal hole. It meshes with a hexagonal gear and has an internal hexagonal hole on the gear shaft of the last stage of the gear set for manual operation and docking with a manual tool.

Images