CN118030309A - Electric reverse thrust synchronous actuating system - Google Patents

Abstract

The invention discloses an electric reverse thrust synchronous actuating system, which uses an electric power driving device to replace a hydraulic control valve assembly, adopts a permanent magnet synchronous motor to convert input electric energy into rotary mechanical energy, transmits the rotary mechanical energy to a screw rod actuator through a soft anti-torque flexible shaft, outputs linear driving force through a screw rod transmission pair, and synchronously moves between the screw rod actuators through the anti-torque flexible shaft to replace a hydraulic actuator and a pipeline. Therefore, the centralized electric synchronous driving reverse thrust device actuating system has no hydraulic element and hydraulic pipeline, the hydraulic source requirements of easy leakage, easy pollution and large weight are eliminated, the weight of the system can be reduced by about 30%, the transmission efficiency is improved to more than 80%, the maintenance time is reduced by half, and the reliability is obviously improved; in addition, compared with the existing electric reverse-thrust synchronous actuation system, the electric reverse-thrust synchronous actuation system architecture with high synchronous efficiency is provided.

Description

Electric reverse thrust synchronous actuating system

Technical Field

The invention belongs to a high bypass ratio turbofan engine cascade type reverse thrust device system, and particularly relates to a reverse thrust device actuating system.

Background

The hydraulic driving mode adopted by the engine reverse thrust device actuating system of the existing large-scale conveyor mainly comprises a reverse thrust electronic controller, a hydraulic control valve assembly, a hydraulic actuator with a lock, a hydraulic actuator without a lock, a flexible shaft, a proximity switch sensor, a linear displacement sensor, a synchronous shaft lock, a hydraulic pipeline and the like. The system comprises an aircraft, a thrust-reversing electronic controller, a hydraulic control valve assembly, an actuator and a control system, wherein the aircraft provides a hydraulic oil source, the thrust-reversing electronic controller receives an unfolding/folding instruction of a thrust-reversing rod and controls the hydraulic control valve assembly to convey hydraulic oil to the actuator, and each hydraulic actuator generates output force under the action of pressure difference of two cavities to drive the thrust-reversing device to move the outer cover to unfold or fold; the actuators distributed on the circular arcs are connected together through the flexible shafts and the mechanical synchronous mechanisms in the actuators, so that synchronous unfolding/folding of the hydraulic actuators is realized; when the actuator is unfolded, the reverse thrust device changes the air exhaust direction of the engine fan so as to help to generate reverse thrust after the aircraft lands or when the aircraft breaks off and reduce the speed of the aircraft; when the actuator is retracted, the locking mechanism locks the reverse thrust device at the retracted position, and fan air is discharged backwards from the tail part of the engine to generate positive thrust; the proximity switch sensor and the linear displacement sensor are respectively used for detecting the state of the lock and the position of the actuator. Because the hydraulic back thrust device actuating system comprises various hydraulic pipelines, hydraulic actuators, hydraulic joints and valves, the system has the advantages of complex structure, large weight, low efficiency, difficult maintenance, easy leakage and higher failure rate.

In addition, electric counter-thrust devices are disclosed in the prior art patent application CN109026436a "counter-thrust device" and in both the turbojet nacelle "and in US20110296812A1" Thrust Reverser Actuation System Architecture ". The invention patent application CN109026436A is an O-shaped movable housing, the back-pushing device comprises a controller, a motor, a mechanical flexible shaft and a plurality of ball screw actuators, the ball screw actuators are connected through the mechanical flexible shaft, the controller controls the motor to stop by detecting the torque threshold value of the motor, the motor double-shaft output is connected to the actuators on the left side and the right side through the mechanical flexible shaft, the two actuators on the single side are connected through the mechanical flexible shaft, and the motor controls the actuators to act through the flexible shaft. The invention patent US20110296812A1 discloses two movable half covers, the reverse-acting device comprises a control circuit, a PDU, three flexible shafts and a plurality of actuators, the PDU comprises a brake, a motor and a gear set, the control circuit receives FADEC signals to control the motor and the brake, the motor is in single-shaft output, one side of the motor is directly connected with the actuators through the gear set, the other side of the motor is connected with the actuators through the flexible shafts, and the two actuators on one side of the motor are connected through the flexible shafts, and the motor drives the actuators to act according to instructions of the control circuit.

The above scheme has the following defects:

The single-side actuator is connected to the motor in series through the flexible shaft, and when the motor drives the actuator to act, the motion hysteresis of the actuator far away from the motor compared with the actuator at the near end causes the synchronization efficiency of the thrust reverser to be low. In addition, the motor is arranged above or below the torsion frame, the motor is large in size, the requirement on the installation space is high, and the motor is inconvenient to install and maintain.

Disclosure of Invention

The invention aims to provide an electric reverse-thrust synchronous actuating system which is used for simplifying the component structure, eliminating hydraulic elements and pipelines, reducing the weight of the system, improving the reliability, the viability and the maintainability of the actuating system, solving the defects in the traditional electric reverse-thrust actuating system and improving the maintenance reliability and the synchronous efficiency of the actuating system.

In order to realize the tasks, the invention adopts the following technical scheme:

An electric back-thrust synchronous actuation system comprises a back-thrust electronic controller, a power driving device, a plurality of torsion-resistant flexible shafts, a plurality of screw rod actuators, a plurality of movable housing locks, a plurality of proximity switch sensors, a plurality of main locks and a plurality of position sensors, wherein:

the power driving device is provided with double output shafts which symmetrically move at the same speed;

The screw actuators 8a, 8b, 8d, 8e have a rotation input shaft, a rotation output shaft, and a linear output shaft; one part of torque input through the rotary input shaft is output through the linear output shaft after being decelerated and commutated by the speed reducer and the screw transmission pair, and the other part of torque is output through the rotary output shaft at the same rotating speed; the rotary output of the double output shafts of the power driving device respectively transmits torque to screw rod actuators 8b and 8d through anti-torque flexible shafts 7a and 7b, and the output of the rotary output shafts of the screw rod actuators 8b and 8d respectively transmits torque to rotary output input shafts of the screw rod actuators 8a and 8e through anti-torque flexible shafts 7c and 7 d; the linear output shafts of the screw rod actuators 8a and 8b are connected with the right moving housing 18a of the back thrust device, and the linear output shafts of the screw rod actuators 8d and 8e are connected with the left moving housing 18b of the back thrust device;

The main locks 11a and 11b are used for locking the screw rod actuators 8b and 8d when power is off and unlocking when power is on; proximity switch sensors 14a, 14b are respectively installed on the main locks 11a, 11b for detecting states of the main locks 11a, 11 b; the position sensors 13a and 13b are linear displacement sensors or angular displacement sensors, and are respectively integrated on screw transmission pairs of the screw actuators 8b and 8d, so that the output displacement of the screw actuators 8b and 8d is fed back in real time;

The movable housing locks 9a and 9b are respectively arranged at the fully retracted positions of the right movable housing 18a and the left movable housing 18b of the thrust reverser, and lock the right movable housing 18a and the left movable housing 18b of the thrust reverser at the fully retracted positions through a mechanical locking mechanism after the right movable housing 18a and the left movable housing 18b of the thrust reverser are fully retracted; proximity switch sensors 10a and 10b are attached to the movable housing locks 9a and 9b, respectively, to detect the states of the movable housing locks 9a and 9 b.

Further, the power driving device comprises a permanent magnet synchronous motor, a brake, a rotary transformer and a manual device, wherein the output shaft of the permanent magnet synchronous motor is braked when the brake is powered off, the brake is released when the brake is powered on, and the brake can be released through the manual device when the brake is powered off.

Further, the main locks 11a, 11b are provided with manual operation manual devices 12a, 12b, and the manual devices 12a, 12b are operated to release the lock when the main locks 11a, 11b are locked by power-off.

Further, the torsion-resistant flexible shafts 7a, 7b, 7c, 7d can transmit power at a curvature not lower than the minimum curvature radius thereof.

Further, in flight, the moving covers 18a and 18b of the reverse thrust device are in a fully retracted and locked state, when the aircraft lands, a driver manipulates the reverse thrust rod to be located at an unfolding position, a relay for controlling the on-off of a power supply of the moving cover lock is switched on, the moving cover locks 9a and 9b are unlocked after being electrified, and meanwhile, the proximity switch sensors 10a and 10b feed back the unlocking state of the moving cover locks 9a and 9b to the electronic engine controller; the electronic controller of the engine synthesizes aircraft altitude information, feedback signals of the proximity switch sensors 10a and 10b and an unfolding command of the reverse thrust rod, and sends out a switching-on command of the relay and an unfolding motion control command of the reverse thrust electronic controller; after the relay is connected, the power driving power supply provides driving power supply for the reverse thrust electronic controller; the reverse-push electronic controller is provided with control operation power by a control power supply.

Further, after receiving the expansion instruction of the thrust rod, the thrust electronic controller controls the brake of the power driving device and the unlocking of the main locks 11a and 11b, and the proximity switch sensors 14a and 14b feed back the unlocking states of the main locks 11a and 11b to the electronic engine controller for monitoring the states of the main locks 11a and 11 b; after the brake and the main locks 11a and 11b are unlocked, the reverse thrust electronic controller sends out a permanent magnet synchronous motor unfolding speed control instruction, and the rotary transformer feeds back the rotating speed of the permanent magnet synchronous motor to the reverse thrust electronic controller; an output shaft on one side of the permanent magnet synchronous motor transmits torque to the screw rod actuator 8b through the anti-torque flexible shaft 7a, the screw rod actuator 8b synchronously transmits input torque to the screw rod actuator 8a through the anti-torque flexible shaft 7c, an output shaft on the other side of the permanent magnet synchronous motor synchronously transmits torque to the screw rod actuator 8d through the anti-torque flexible shaft 7b, the screw rod actuator 8d synchronously transmits input torque to the screw rod actuator 8a through the anti-torque flexible shaft 7d, synchronous movement of the screw rod actuators 8a, 8b, 8d and 8e is realized, the right moving housing 18a of the thrust reverser and the left moving housing 18b of the thrust reverser are driven to be synchronously unfolded, the position sensors 13a and 13b integrated on the screw rod actuators 8a and 8d feed back movement position information of the right moving housing 18a of the thrust reverser and the left moving housing 18b of the thrust reverser to an electronic engine controller, and the position sensors 13a and 13b can adopt linear displacement or angular displacement sensors.

Further, when the right moving housing 18a of the thrust reverser and the left moving housing 18b of the thrust reverser are completely unfolded, the thrust reverser electronic controller cuts off the power supply to the brake and the main locks 11a and 11b, the brake 601 and the main locks 11a and 11b are locked, the power driving device is in a braking state, and the main locks 11a and 11b lock the screw actuators 8a, 8b, 8d and 8e at the unfolded positions through the torsion-resistant flexible shafts 7a, 7b, 7c and 7 d.

Further, when the driver manipulates the reverse thrust rod to be located at the retracted position, the relay for controlling the power on-off of the movable housing lock is disconnected, the movable housing locks 9a and 9b are in the power-off unlocking state, and the relay is kept on; and the electronic engine controller sends out a retraction movement control instruction of the reverse thrust electronic controller according to the retraction instruction of the reverse thrust rod.

Further, after receiving a stowing instruction of the thrust rod, the thrust electronic controller controls the brake of the power driving device and the unlocking of the main locks 11a and 11b, and the proximity switch sensors 14a and 14b feed back the unlocking states of the main locks 11a and 11b to the electronic controller of the engine for monitoring the main lock state; after the brake and the main locks 11a and 11b are unlocked, the reverse thrust electronic controller sends a retraction speed control instruction of the permanent magnet synchronous motor, and the rotary transformer feeds back the speed of the permanent magnet synchronous motor to the reverse thrust electronic controller; the torque output by the permanent magnet synchronous motor is synchronously transmitted to screw actuators 8b and 8d through anti-torque flexible shafts 7a and 7b, the screw actuator 8b synchronously transmits the input torque to the screw actuator 8a, the screw actuator 8d synchronously transmits the input torque to the screw actuator 8e, the screw actuators 8a, 8b, 8d and 8e synchronously output driving force, the reverse thrust device right moving housing 18a and the reverse thrust device left moving housing 18b are driven to synchronously retract, and the position sensors 13a and 13b integrated on the screw actuators 8a and 8d feed back the movement position information of the reverse thrust device right moving housing 18a and the reverse thrust device left moving housing 18b to an electronic engine controller; when the movable covers 18a and 18b of the reverse thrust device are completely retracted, the movable cover locks 9a and 9b are mechanically locked under the action of the movable covers 18a and 18b of the reverse thrust device, and the proximity switch sensors 10a and 10b feed back the locking states of the movable cover locks 9a and 9b to the electronic engine controller for monitoring the states of the movable cover locks 9a and 9 b; the back-pushing electronic controller cuts off the power supply of the brake and the main locks 11a and 11b, the brake and the main locks 11a and 11b are locked, the power driving device is in a braking state, and the main locks 11a and 11b lock the screw rod actuators 8a, 8b, 8d and 8e at the retracted positions through the anti-torsion flexible shafts 7a, 7b, 7c and 7 d; and meanwhile, the electronic controller of the engine controls the relay to be disconnected, and the power driving power supply is cut off.

Further, when the brake and the main lock 11a, 11b are powered off or fail-locked, the locked state of the brake and the main lock 11a, 11b is released by the manual device, the manual device 12a, the manual device 12b and the screw actuators 8a, 8b, 8d, 8e are manually driven to be deployed or retracted at the time of ground maintenance.

Compared with the prior art, the invention has the following technical characteristics:

The invention uses the electrically driven power driving device to replace the hydraulic control valve component, adopts the permanent magnet synchronous motor to convert the input electric energy into the rotary mechanical energy, the rotary mechanical energy is transmitted to the screw rod actuator through the soft anti-torque flexible shaft, the screw rod actuator outputs the linear driving force through the screw rod transmission pair, and the screw rod actuators synchronously move through the anti-torque flexible shaft to replace the hydraulic actuator and the pipeline. Therefore, the centralized electric synchronous driving reverse thrust device actuating system has no hydraulic element and hydraulic pipeline, eliminates the hydraulic source requirements of easy leakage, easy pollution and large weight, reduces the weight of the system by about 30 percent, improves the transmission efficiency to more than 80 percent, reduces the maintenance time by half and remarkably improves the reliability. In addition, compared with the existing electric reverse thrust synchronous actuation system, the electric reverse thrust synchronous actuation system framework with high synchronization efficiency and good maintainability is provided.

Drawings

FIG. 1 is a functional block diagram of a system architecture of the present invention;

fig. 2 is a layout diagram of the installation of the synchronous drive mechanism.

The reference numerals in the figures illustrate: the device comprises a reverse thrust rod, a relay, a 3-engine electronic controller, a relay 4, a reverse thrust electronic controller 5, a power driving device 6, a brake 601, a permanent magnet synchronous motor 602, a rotary transformer 603, a manual device 604, a 7a anti-torsion flexible shaft, a 7b anti-torsion flexible shaft, a 7c anti-torsion flexible shaft, a 7d anti-torsion flexible shaft, an 8a screw actuator 8b screw actuator 8d screw actuator 8e screw actuator 9a moving housing lock 9b moving housing lock 10a proximity switch sensor 10b proximity switch sensor 11a main lock 11b main lock 12a manual device 12b manual device 13a position sensor 13b position sensor 14a proximity switch sensor 14b moving housing lock power supply 16 power driving power supply 17 control power supply 18a reverse thrust device right moving housing, 18b reverse thrust device left moving housing, 31a non-lock actuator 31b non-lock actuator 32a non-lock actuator 32b with lock actuator.

Detailed Description

Referring to fig. 1, the invention discloses an electric back-thrust synchronous actuating system, which consists of a back-thrust electronic controller 5, a power driving device 6, anti-torsion flexible shafts 7a, 7b, 7c and 7d, screw rod actuators 8a, 8b, 8d and 8e, movable housing locks 9a and 9b, proximity switch sensors 10a and 10b, 14a and 14b, main locks 11a and 11b, manual devices 12a and 12b and position sensors 13a and 13 b.

The power driving device 6 is composed of a permanent magnet synchronous motor 602, a brake 601, a rotary transformer 603 and a manual device 604, wherein the output shaft of the permanent magnet synchronous motor 602 is braked when the brake 601 is powered off, the brake is released when the power is on, and the brake can be released through the manual device 604 when the power is off; the power drive 6 is designed with a symmetrical, co-moving double output shaft.

The screw actuators 8a, 8b, 8d, 8e have a rotation input shaft, a rotation output shaft, and a linear output shaft; one part of torque input through the rotary input shaft is output through the linear output shaft after being decelerated and commutated by the speed reducer and the screw transmission pair, and the other part of torque is output through the rotary output shaft at the same rotating speed; the rotary output of the double output shafts of the power driving device 6 respectively transmits torque to the screw rod actuators 8b and 8d through the anti-torque flexible shafts 7a and 7b, and the output of the rotary output shafts of the screw rod actuators 8b and 8d respectively transmits torque to the rotary output/input shafts of the screw rod actuators 8a and 8e through the anti-torque flexible shafts 7c and 7 d; the linear output shafts of the screw actuators 8a, 8b are both connected to the right-hand moving housing 18a of the thrust reverser, and the linear output shafts of the screw actuators 8d, 8e are both connected to the left-hand moving housing 18b of the thrust reverser. The screw transmission pair can be in the forms of trapezoids, balls, rollers and the like.

The main locks 11a and 11b adopt electromagnetic coils to control friction pairs, lock screw actuators 8b and 8d when power is off, and unlock when power is on; the main locks 11a and 11b are provided with manual devices 12a and 12b which are manually operated, and the manual devices 12a and 12b can be operated to release the locking when the main locks 11a and 11b are in power-off locking; proximity switch sensors 14a, 14b are respectively installed on the main locks 11a, 11b for detecting states of the main locks 11a, 11 b; the position sensors 13a and 13b are linear displacement sensors or angular displacement sensors, and are respectively integrated on screw transmission pairs of the screw actuators 8b and 8d, so that output displacement of the screw actuators 8b and 8d is fed back in real time.

The anti-torsion flexible shafts 7a, 7b, 7c and 7d can transmit power at the bending degree not lower than the minimum bending radius, the anti-torsion flexible shafts 7a and 7b are arranged between the power driving device 6 and the screw rod actuators 8b and 8d, the anti-torsion flexible shafts 7c and 7d are arranged between the screw rod actuator 8b and the screw rod actuator 8a and between the screw rod actuator 8d and the screw rod actuator 8e, and a mechanical connection, such as a spline pair, is adopted for a connection interface.

The left moving housing 18b of the back thrust device is driven by the screw actuators 8a and 8b, the right moving housing 18a of the back thrust device is driven by the screw actuators 8d and 8e, and the power output by the power driving device 6 is synchronously transmitted to the screw actuators 8a, 8b, 8d and 8e by adopting the anti-torque flexible shafts 7a, 7b, 7c and 7 d. The torsion-resistant flexible shafts 7a, 7b, 7c and 7d have high torque transmission capability, small torsion angle and high synchronism, so that the left-right movement outer cover of the reverse thrust device can be synchronously unfolded or folded.

The movable housing locks 9a and 9b are respectively arranged at the fully retracted positions of the right movable housing 18a and the left movable housing 18b of the thrust reverser, and lock the right movable housing 18a and the left movable housing 18b of the thrust reverser at the fully retracted positions through a mechanical locking mechanism after the right movable housing 18a and the left movable housing 18b of the thrust reverser are fully retracted; the mechanical locking mechanism is controlled by the electromagnetic force generated by the electromagnetic coil, and is unlocked when the electromagnetic coil is electrified, and the electromagnetic locking mechanism can be unlocked by a manual device under the condition of power failure; proximity switch sensors 10a and 10b are respectively installed on the movable housing locks 9a and 9b to detect the states of the movable housing locks 9a and 9 b; the mobile housing locks 9a, 9b are the third lock system in the system, except for the brake 601 of the power drive 6 and the main locks 11a, 11b of the screw actuators 8a, 8 d.

The working process comprises the following steps:

During the flight of the transport plane, the movable outer covers 18a and 18b of the reverse thrust device are in a fully retracted and locked state, a driver manipulates the reverse thrust rod 1 to be in an unfolding position when the plane descends, the relay 2 for controlling the on-off of the movable outer cover lock power supply 15 is switched on, the movable outer cover lock power supply 15 can adopt the plane 115VAC power supply, the movable outer cover locks 9a and 9b are unlocked after being electrified, and meanwhile, the proximity switch sensors 10a and 10b feed back the unlocking states of the movable outer cover locks 9a and 9b to the engine electronic controller 3; the engine electronic controller 3 synthesizes aircraft height information, feedback signals of the proximity switch sensors 10a and 10b and an unfolding command of the reverse thrust rod 1, and sends a switching-on command of the relay 4 and an unfolding motion control command of the reverse thrust electronic controller 5; after the relay 4 is turned on, the power driving power supply 16, such as an aircraft 115VAC power supply, supplies driving power to the thrust reverser electronic controller 5; the thrust reverser electronic controller 5 provides control operational power from a control power supply 17, such as 28 VDC.

After receiving the expansion instruction of the thrust rod 1, the thrust electronic controller 5 controls the brake 601 of the power driving device 6 and the unlocking of the main locks 11a and 11b, and the proximity switch sensors 14a and 14b feed back the unlocking states of the main locks 11a and 11b to the electronic engine controller 3 for monitoring the main lock states; after the brake 601 and the main locks 11a and 11b are unlocked, the reverse thrust electronic controller 5 sends out a permanent magnet synchronous motor 602 unfolding speed control instruction, and the rotary transformer 603 feeds back the rotating speed of the permanent magnet synchronous motor 602 to the reverse thrust electronic controller 5; an output shaft at one side of the permanent magnet synchronous motor 602 transmits torque to the screw rod actuator 8b through the anti-torque flexible shaft 7a, the screw rod actuator 8b synchronously transmits input torque to the screw rod actuator 8a through the anti-torque flexible shaft 7c, an output shaft at the other side of the permanent magnet synchronous motor 602 synchronously transmits torque to the screw rod actuator 8d through the anti-torque flexible shaft 7b, the screw rod actuator 8d synchronously transmits input torque to the screw rod actuator 8a through the anti-torque flexible shaft 7d, synchronous movement of the screw rod actuators 8a, 8b, 8d and 8e is realized, the right moving housing 18a of the thrust reverser and the left moving housing 18b of the thrust reverser are driven to be synchronously unfolded, the movement position information of the right moving housing 18a of the thrust reverser and the left moving housing 18b of the thrust reverser is fed back to the electronic engine controller 3 through the position sensors 13a and 13b can adopt linear displacement or angular displacement sensors. When the right moving housing 18a of the thrust reverser and the left moving housing 18b of the thrust reverser are completely unfolded, the electronic thrust reverser controller 5 cuts off the power supply to the brake 601 and the main locks 11a and 11b, the brake 601 and the main locks 11a and 11b are locked, the power driving device 6 is in a braking state, and the main locks 11a and 11b lock the screw actuators 8a, 8b, 8d and 8e at the unfolded positions through the anti-torsion flexible shafts 7a, 7b, 7c and 7 d.

When the driver manipulates the reverse thrust rod 1 to be positioned at the retracted position, the relay 2 for controlling the on-off of the power supply 15 of the movable outer cover lock is disconnected, the movable outer cover locks 9a and 9b are in the power-off unlocking state, and the relay 4 is kept on; the engine electronic controller 3 issues a stowing movement control command of the thrust reverser electronic controller 5 according to the stowing command of the thrust reverser lever 1. After receiving the stowing instruction of the thrust rod 1, the thrust electronic controller 5 controls the brake 601 of the power driving device 6 and the unlocking of the main locks 11a and 11b, and the proximity switch sensors 14a and 14b feed back the unlocking states of the main locks 11a and 11b to the electronic engine controller 3 for monitoring the main lock states; after the brake 601 and the main locks 11a and 11b are unlocked, the reverse thrust electronic controller 5 sends a retraction speed control instruction of the permanent magnet synchronous motor 602, and the rotary transformer 603 feeds back the rotating speed of the permanent magnet synchronous motor 602 to the reverse thrust electronic controller 5; the torque output by the permanent magnet synchronous motor 602 is synchronously transmitted to the screw actuators 8b and 8d through the anti-torque flexible shafts 7a and 7b, the screw actuator 8b synchronously transmits the input torque to the screw actuator 8a, the screw actuator 8d synchronously transmits the input torque to the screw actuator 8e, the screw actuators 8a, 8b, 8d and 8e synchronously output driving forces, the reverse thrust device right moving housing 18a and the reverse thrust device left moving housing 18b are driven to synchronously retract, and the position sensors 13a and 13b integrated on the screw actuators 8a and 8d feed back the movement position information of the reverse thrust device right moving housing 18a and the reverse thrust device left moving housing 18b to the engine electronic controller 3. When the movable covers 18a and 18b of the reverse thrust device are completely retracted, the movable cover locks 9a and 9b are mechanically locked under the action of the movable covers 18a and 18b of the reverse thrust device, and the proximity switch sensors 10a and 10b feed back the locking states of the movable cover locks 9a and 9b to the electronic engine controller 3 for monitoring the states of the movable cover locks 9a and 9 b; the back-pushing electronic controller 5 cuts off the power supply of the brake 601 and the main locks 11a and 11b, the brake 601 and the main locks 11a and 11b are locked, the power driving device 6 is in a braking state, and the main locks 11a and 11b lock the screw actuators 8a, 8b, 8d and 8e at the retracted positions through the anti-torsion flexible shafts 7a, 7b, 7c and 7 d; and meanwhile, the electronic engine controller 3 controls the relay 4 to be disconnected, and the power driving power supply 16 is cut off.

When the brake 601 and the main locks 11a and 11b are powered off or locked by faults, the locking state of the brake 601 and the main locks 11a and 11b can be released by the manual devices 604, 12a and 12b and the screw actuators 8a, 8b, 8d and 8e are manually driven to be unfolded or retracted during ground maintenance, so that the ground maintenance operation of the system is facilitated.

As shown in fig. 2, the synchronous drive mechanism of the embodiment is configured such that a lock-free actuator 31a is composed of a screw actuator 8a and a position sensor 13a, a lock-free actuator 31b is composed of a screw actuator 8d and a position sensor 13b, a lock-equipped actuator 32a is composed of a screw actuator 8b, a master lock 11a, a manual device 12a and a proximity switch sensor 14a, and a lock-equipped actuator 32b is composed of a screw actuator 8e, a master lock 11b, a manual device 12b and a proximity switch sensor 14 b. The lock-free actuator 31a and the lock-equipped actuator 32a drive the reverse thrust device to move right and the housing 18a to move, the lock-equipped actuator 32a and the lock-equipped actuator 32b drive the reverse thrust device to move left and the housing 18b to move, and 4 actuators synchronously work through the anti-torsion flexible shafts 7a, 7b, 7c and 7 d.

The output shaft of one side of the permanent magnet synchronous motor 602 transmits torque to the locking actuator 32a through the anti-torsion flexible shaft 7a, the output shaft of the other side transmits torque to the unlocking actuator 31b through the anti-torsion flexible shaft 7b, the locking actuator 32a synchronously transmits input torque to the unlocking actuator 31a through the anti-torsion flexible shaft 7c, the unlocking actuator 31b synchronously transmits input torque to the locking actuator 32b through the anti-torsion flexible shaft 7d, the actuators far away from the motor are uniformly distributed and dispersed on the unlocking actuator 31a and the locking actuator 32b, the actuators connected in series to the motor are distributed along Zhou Xiangcheng far 31 a-near 31 b-far 32 b-near 32a, and the control synchronism is improved. In addition, the control power driving device 6 in the example is arranged on the right side of the torsion frame, so that the space is large, and the maintenance and the installation are easy.

The above embodiments are only for illustrating the technical solution of the present application, and are not limiting thereof; although the application has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced equally; such modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present application, and are intended to be included in the scope of the present application.

Claims (10)

1. The utility model provides an electronic back-thrust synchronous actuation system which characterized in that, includes back-thrust electronic controller (5), power drive arrangement (6), a plurality of antitorque flexible axle, a plurality of lead screw actuators, a plurality of removal dustcoat locks, a plurality of proximity switch sensor, a plurality of master locks and a plurality of position sensor, wherein:

the power driving device (6) is provided with double output shafts which symmetrically move at the same speed;

The screw rod actuators (8 a, 8b, 8d, 8 e) are provided with a rotary input shaft, a rotary output shaft and a linear output shaft; one part of torque input through the rotary input shaft is output through the linear output shaft after being decelerated and commutated by the speed reducer and the screw transmission pair, and the other part of torque is output through the rotary output shaft at the same rotating speed; the rotary output of the double output shafts of the power driving device (6) respectively transmits torque to screw rod actuators (8 b) and (8 d) through anti-torque flexible shafts (7 a) and (7 b), and the output of the rotary output shafts of the screw rod actuators (8 b) and (8 d) respectively transmits torque to rotary output input shafts of the screw rod actuators (8 a) and (8 e) through anti-torque flexible shafts (7 c) and (7 d); the linear output shafts of the screw rod actuators (8 a) and (8 b) are connected with the right moving housing (18 a) of the reverse thrust device, and the linear output shafts of the screw rod actuators (8 d) and (8 e) are connected with the left moving housing (18 b) of the reverse thrust device;

The main locks (11 a, 11 b) are used for locking the screw rod actuators (8 b, 8 d) when the power is off and unlocking when the power is on; proximity switch sensors (14 a, 14 b) are respectively mounted on the main locks (11 a, 11 b) for detecting the states of the main locks (11 a, 11 b); the position sensors (13 a) and (13 b) are linear displacement sensors or angular displacement sensors, and are respectively integrated on screw transmission pairs of screw actuators (8 b) and (8 d), so that output displacement of the screw actuators (8 b) and (8 d) is fed back in real time;

The movable housing locks (9 a) and (9 b) are respectively arranged at the fully retracted positions of the right movable housing (18 a) and the left movable housing (18 b) of the reverse thrust device, and after the right movable housing (18 a) and the left movable housing (18 b) of the reverse thrust device are fully retracted, the right movable housing (18 a) and the left movable housing (18 b) of the reverse thrust device are locked at the fully retracted positions through a mechanical locking mechanism; proximity switch sensors (10 a, 10 b) are mounted on the movable housing locks (9 a, 9 b), respectively, to detect the states of the movable housing locks (9 a, 9 b).

2. The electric reverse synchronous actuation system according to claim 1, characterized in that the power drive means (6) comprise a permanent magnet synchronous motor (602), a brake (601), a resolver (603) and a manual means (604), the output shaft of the permanent magnet synchronous motor (602) being braked when the brake (601) is de-energized, the brake being released by energizing, the brake being also released by the manual means (604) when de-energized.

3. The electric reverse synchronous actuation system according to claim 1, characterized in that the main locks (11 a, 11 b) are provided with manually operated manual means (12 a, 12 b), which are releasable by actuation of the manual means (12 a, 12 b) when the main locks (11 a, 11 b) are de-energized.

4. An electric reverse synchronous actuation system according to claim 1, characterized in that the torsion-resistant flexible shafts (7 a), (7 b), (7 c), (7 d) can transmit power at a curvature not lower than their minimum bending radius.

5. The electric thrust reverser synchronous actuating system according to claim 1, characterized in that the thrust reverser movable covers (18 a, 18 b) are in a completely retracted and locked state in the flight of the conveyor, the driver manipulates the thrust reverser lever (1) to be in an extended position when the aircraft is landing, the relay (2) for controlling the on-off of the power supply (15) of the movable cover lock is turned on, the movable cover locks (9 a, 9 b) are unlocked after being electrified, and the proximity switch sensors (10 a, 10 b) feed back the unlocking state of the movable cover locks (9 a, 9 b) to the engine electronic controller (3); the engine electronic controller (3) synthesizes aircraft height information, feedback signals of the proximity switch sensors (10 a) and (10 b) and an unfolding command of the reverse thrust rod (1) and sends a switching-on command of the relay (4) and an unfolding motion control command of the reverse thrust electronic controller (5); after the relay (4) is switched on, a power driving power supply (16) provides driving power supply for the reverse thrust electronic controller (5); the reverse thrust electronic controller (5) is provided with control operation power by a control power supply (17).

6. The electric reverse synchronous actuation system according to claim 5, wherein after receiving the expansion instruction of the reverse thrust rod (1), the reverse thrust electronic controller (5) controls unlocking of the brake (601) and the main locks (11 a, 11 b) of the power driving device (6), and the proximity switch sensors (14 a, 14 b) feed back the unlocking states of the main locks (11 a, 11 b) to the engine electronic controller (3) for monitoring the states of the main locks (11 a, 11 b); after the brake (601) and the main locks (11 a) and (11 b) are unlocked, the reverse thrust electronic controller (5) sends out a permanent magnet synchronous motor (602) unfolding speed control instruction, and the rotary transformer (603) feeds back the rotating speed of the permanent magnet synchronous motor (602) to the reverse thrust electronic controller (5); an output shaft on one side of a permanent magnet synchronous motor (602) transmits torque to a screw rod actuator (8 b) through a torsion-resistant flexible shaft (7 a), the screw rod actuator (8 b) synchronously transmits input torque to the screw rod actuator (8 a) through a torsion-resistant flexible shaft (7 c), an output shaft on the other side of the permanent magnet synchronous motor (602) synchronously transmits torque to the screw rod actuator (8 d) through the torsion-resistant flexible shaft (7 b), the screw rod actuator (8 d) synchronously transmits input torque to the screw rod actuator (8 a) through the torsion-resistant flexible shaft (7 d), synchronous movement of the screw rod actuators (8 a), (8 b), (8 d) and (8 e) is realized, a right moving housing (18 a) of a counter-thrust device and a left moving housing (18 b) are driven to be synchronously unfolded, the position sensors (13 a) and (13 b) integrated on the screw rod actuators (8 a) and the left moving housing (18 b) of the counter-thrust device feed back the movement position information to an electronic engine controller (3), and the position sensors (13 a) can adopt linear displacement or angular displacement sensors.

7. The electric reverse synchronous actuation system according to claim 5, characterized in that the reverse electronic controller (5) cuts off the power supply to the brake (601) and the main locks (11 a), (11 b), the brake (601) and the main locks (11 a), (11 b) are locked, the power driving device (6) is in a braking state, and the main locks (11 a), (11 b) lock the screw actuators (8 a), (8 b), (8 d), (8 e) in a deployed position by the torsion-resistant flexible shafts (7 a), (7 b), (7 c), (7 d) after the reverse thrust device right-moving housing (18 a) and the reverse thrust device left-moving housing (18 b) are fully deployed.

8. The electric reverse synchronous actuation system according to claim 1, characterized in that when the driver manipulates the reverse thrust rod (1) to be in the retracted position, the relay (2) controlling the on/off of the power supply (15) of the mobile enclosure lock is turned off, the mobile enclosure locks (9 a), (9 b) are in the power-off unlocking state, and the relay (4) is kept turned on; the electronic engine controller (3) sends out a stowing movement control command of the electronic thrust reverser controller (5) according to the stowing command of the thrust reverser lever (1).

9. The electric reverse synchronous actuation system according to claim 8, wherein after receiving a stowing instruction of the reverse thrust rod (1), the reverse thrust electronic controller (5) controls unlocking of the brake (601) and the main locks (11 a), (11 b) of the power driving device (6), and the proximity switch sensors (14 a), (14 b) feed back the unlocking states of the main locks (11 a), (11 b) to the engine electronic controller (3) for monitoring the main lock state; after the brake (601) and the main locks (11 a) and (11 b) are unlocked, the reverse thrust electronic controller (5) sends a retraction speed control instruction of the permanent magnet synchronous motor (602), and the rotary transformer (603) feeds back the rotor speed of the permanent magnet synchronous motor (602) to the reverse thrust electronic controller (5); the torque output by the permanent magnet synchronous motor (602) is synchronously transmitted to screw rod actuators (8 b) and (8 d) through anti-torque flexible shafts (7 a) and (7 b), the screw rod actuator (8 b) synchronously transmits input torque to the screw rod actuator (8 a), the screw rod actuator (8 d) synchronously transmits input torque to the screw rod actuator (8 e), the screw rod actuators (8 a), (8 b), (8 d) and (8 e) synchronously output driving force to drive the right moving housing (18 a) of the counter thrust device and the left moving housing (18 b) of the counter thrust device to be synchronously retracted, and the position sensors (13 a) and (13 b) integrated on the screw rod actuators (8 a) and (8 d) feed back the movement position information of the right moving housing (18 a) of the counter thrust device and the left moving housing (18 b) of the counter thrust device to an electronic engine controller (3); when the movable covers (18 a, 18 b) of the reverse thrust device are completely retracted, the movable cover locks (9 a, 9 b) are mechanically locked under the action of the movable covers (18 a, 18 b) of the reverse thrust device, and the proximity switch sensors (10 a, 10 b) feed back the locking states of the movable cover locks (9 a, 9 b) to the electronic engine controller (3) for monitoring the states of the movable cover locks (9 a, 9 b); the back-pushing electronic controller (5) cuts off the power supply of the brake (601) and the main locks (11 a) and (11 b), the brake (601) and the main locks (11 a) and (11 b) are locked, the power driving device (6) is in a braking state, and the main locks (11 a) and (11 b) lock the screw rod actuators (8 a), (8 b), (8 d) and (8 e) at the retraction positions through the torsion-resistant flexible shafts (7 a), (7 b), (7 c) and (7 d); meanwhile, the electronic controller (3) of the engine controls the relay (4) to be disconnected, and the power driving power supply (16) is cut off.

10. The electric reverse synchronous actuation system according to claim 1, characterized in that when the brake (601) and the master lock (11 a), (11 b) are powered off or fail-locked, the locked state of the brake (601) and the master lock (11 a), (11 b) is released and the screw actuators (8 a), (8 b), (8 d), (8 e) are manually driven to be deployed or retracted by the manual device (604), the manual device (12 a), the manual device (12 b) at the time of ground maintenance.