CN210437381U

CN210437381U - Double-force-transmission-path aileron and control surface trim transmission mechanism for aviation

Info

Publication number: CN210437381U
Application number: CN201921306764.8U
Authority: CN
Inventors: 聂雷; 狄鹏飞; 王莹莹; 董元杰
Original assignee: Donier Haiyi Wuxi Co Ltd
Current assignee: Donier Haiyi Wuxi Co Ltd
Priority date: 2019-08-13
Filing date: 2019-08-13
Publication date: 2020-05-01
Anticipated expiration: 2029-08-13

Abstract

The utility model discloses an aviation is with two biography power route ailerons and control surface trim drive mechanism, including actuator, control lever and aileron control surface linking bridge, the actuator is equipped with synchronous motion's first dowel bar and second dowel bar, first dowel bar and second dowel bar parallel arrangement, the control lever is equipped with two, two the end of control lever respectively with the head end of first dowel bar and second dowel bar is connected, aileron control surface linking bridge includes that the aileron is connected the face, the aileron is connected the face below and is equipped with two parallel arrangement's connection notch, two the head end of control lever respectively with two it is articulated to connect the notch. The utility model discloses a redundant design can reduce the probability that balancing control system passed power route trouble.

Description

Double-force-transmission-path aileron and control surface trim transmission mechanism for aviation

Technical Field

The utility model relates to an aviation trim drive mechanism especially relates to an aviation is with two biography power route ailerons and rudder face trim drive mechanism.

Background

Currently, for the trim design of the ailerons and the rudder of a general-purpose aircraft, an electric or mechanical trim system with a single force transmission path is generally adopted. According to the safety evaluation result of the flight control system, when the trim control surface flutters due to the failure of a force transmission path of an aileron and a rudder trim system, the structure of the control surface can be greatly damaged, and further the aircraft can be affected catastrophically.

And the FMEA analysis of the trim actuators showed a failure rate of about 4.43E-6 for lost actuator force control. For commuter-type aircraft, the airworthiness clause 23.1309 requires that the probability of a catastrophic failure condition occurring should be less than 1.00E-9. Therefore, when the trim system of the ailerons and the rudder of the commuter aircraft is designed, if the trim control of a single force transmission path is adopted, the requirement of airworthiness terms cannot be met.

SUMMERY OF THE UTILITY MODEL

To the defect of above-mentioned prior art, the utility model aims at providing an aviation is with two biography power route ailerons and control surface trim drive mechanism to reduce the probability of trim control system biography power route trouble.

The technical scheme of the utility model is like this: the utility model provides an aviation is with two biography power route ailerons and control surface trim drive mechanism, includes actuator, control lever and aileron control surface linking bridge, the actuator is equipped with synchronous motion's first dowel bar and second dowel bar, first dowel bar and second dowel bar parallel arrangement, the control lever is equipped with two, two the end of control lever respectively with the head end of first dowel bar and second dowel bar is connected, aileron control surface linking bridge includes that the aileron is connected the face, the connection face below of aileron is equipped with two parallel arrangement's connection notch, two the head end of control lever respectively with two it is articulated to connect the notch.

Further, the actuator includes casing, driving motor, motor board, gear train, threaded rod and thrust nut set up in the casing, driving motor and threaded rod are located the front side of motor board, the gear train is located the dorsal part of motor board, the threaded rod is equipped with two of parallel, the threaded rod by the gear train drive rotates, every the threaded rod is equipped with thrust nut, thrust nut with the threaded rod constitutes the screw nut motion pair, thrust nut is equipped with the external screw thread, first dowel bar and second dowel bar respectively with two thrust nut threaded connection on the threaded rod.

Further, the motor board inlays and is equipped with ball bearing, ball bearing's both sides set gradually gasket and footstep bearing respectively, are located the footstep bearing's of motor board front side is equipped with and passes footstep bearing, gasket and ball bearing's bush, the threaded rod is worn to establish in the bush, the end of threaded rod with the gear connection of gear train.

Furthermore, the tail end of the threaded rod is locked with a gear of the gear set through a self-locking nut, and the motor plate rear thrust bearing is limited between the gear and a gasket on the rear side of the motor plate by the gear.

Furthermore, the thrust nut is provided with a square end, the shell is provided with a groove matched with the square end of the thrust nut, the groove is formed in the length direction of the threaded rod, the square end of the thrust nut is embedded into the groove, and the thrust nut moves along the groove when the threaded rod rotates.

The utility model provides a technical scheme's advantage lies in, actuator inner structure is compact, adopts the redundant design of two screw nut motion pairs, two biography power poles and two control levers, and the safety risk that the single biography power route trouble that reducible single control structure formed brought even threaded rod, thrust nut, biography power pole and the control lever on one side also can stabilize aileron and rudder face when losing the control power, can reduce the whole fault failure probability in trim control system biography power route.

Drawings

Fig. 1 is a schematic structural view of an aviation double-force-transmission-path aileron and control surface trim transmission mechanism.

Fig. 2 is a schematic plan view of the actuator.

FIG. 3 is a schematic diagram of a driving motor, a motor plate, and a gear set in an actuator.

Fig. 4 is a schematic view of a connection structure of the gear set, the motor plate and the threaded rod.

Fig. 5 is a schematic diagram of a front side structure of a motor plate in the actuator.

Fig. 6 is a schematic structural view of the actuator casing.

Detailed Description

The present invention will be further described with reference to the following examples, which should not be construed as limiting the invention.

Please combine fig. 1 to fig. 6 to show, the embodiment of the utility model relates to an aviation is with two power transmission path ailerons and control surface trim drive mechanism, including actuator 1, control lever 2 and aileron control surface linking bridge 3, actuator 1 afterbody fixed connection is with firm actuator on support 4, and actuator 1 is aviation is with two power transmission path ailerons and control surface trim drive mechanism's power supply, and it sets up two parallel first power transmission levers 4 and second power transmission lever 5. The first transfer rod 5 and the second transfer rod 6 are made of stainless steel and extend from the housing 7 of the actuator 1 through a set of seals and sealing plates, both ends of which are connected to a control rod 2, the control rod 2 being made of a non-conductive composite material to prevent lightning current from being conducted to the actuator 1 and the interior of the aircraft. Aileron control surface linking bridge 3 includes that the aileron is connected the face 3a, and the aileron is connected the face 3a below and is equipped with two parallel arrangement's connection notch 3b, and the control surface interface of the head end of control lever 2 is two spherical bearings to it is articulated with connection notch 3 b.

The actuator 1 includes a housing 7, a drive motor 8, a motor plate 9, a gear set 10, a threaded rod 11, and a thrust nut 12. The drive motor 8, motor plate 9, gear set 10, threaded rod 11 and thrust nut 12 are disposed within the housing 7. The drive motor 8 and threaded rod 11 are located on the front side of the motor plate 9 and the gear set 10 is located on the back side of the motor plate 9. The threaded rods 11 are arranged in parallel, and the threaded rods 11 are driven to rotate by the gear set 10. Each threaded rod 11 is provided with a thrust nut 12, and the thrust nut 12 and the threaded rod 11 form a screw nut kinematic pair. The thrust nut 12 is provided with external threads, and the first dowel bar 5 and the second dowel bar 6 are respectively in threaded connection with the thrust nut 12 on the two threaded rods 11. The thrust nut 12 is provided with a square end 12a and the housing 7 is provided with a groove 7a matching the square end 12a of the thrust nut 12. The groove 7a is opened along the longitudinal direction of the threaded rod 11, and the square end 12a of the thrust nut 12 is fitted into the groove. When the driving motor 8 rotates, the two threaded rods 11 are respectively driven to rotate through the gear set 10, then the thrust nut 12 moves along the groove 7a, the first force transfer rod 5 and the second force transfer rod 6 also drive the control rod 2 to move forwards or backwards, and finally the aileron or the control surface rotates through the aileron control surface connecting support 3.

The gear set 10 consists of 5 gears which transmit the torque from the drive motor 8 to the threaded rod 11. The gear can act to reduce the motor speed and transmit it to the threaded rod 11. The gear is made of steel and is integrated with a gear shaft. The gear shaft is connected with ball bearings pressed into the motor plate 9 and the gear plate. Two large gears 13 transmit the torque to the threaded rod 11 through a geared connection. The specific connection structure of the gear set 10 and the threaded rod 11 is that the motor plate 9 is embedded with a ball bearing 14, two sides of the ball bearing 14 are respectively provided with a gasket 15 and a thrust bearing 16 in sequence, and the front side of the thrust bearing 16 positioned at the front side of the motor plate 9 is provided with a bushing 17 which penetrates through the thrust bearing 16, the gasket 15 and the ball bearing 14. The threaded rod 11 is made of a steel rod, the threaded rod 11 is inserted into a bushing 17, the bushing 17 is limited in position by the threads, and the bushing 17 limits the thrust bearing 16 between the bushing 17 and the washer 15. The end of the threaded rod 11 is locked with the gear 13 of the gear set 10 by a self-locking nut 18, and the gear 13 limits the rear thrust bearing 16 of the motor plate 9 between the gear 13 and the gasket 15 at the rear side of the motor plate 9. The secondary locking of the self-locking nut 18 is achieved by a hard spacer 19 between the nut and the circlip. These features provide precise location and bearing surfaces for the threaded rod 11. The bushing ensures low friction rotation of the threaded rod 11.

Claims

1. The utility model provides an aviation is with two biography power route ailerons and control surface trim drive mechanism, a serial communication port, including actuator, control lever and aileron control surface linking bridge, the actuator is equipped with synchronous motion's first dowel steel and second dowel steel, first dowel steel and second dowel steel parallel arrangement, the control lever is equipped with two, two the end of control lever respectively with the head end of first dowel steel and second dowel steel is connected, aileron control surface linking bridge includes that the aileron is connected the face, the aileron is connected the face below and is equipped with two parallel arrangement's connection notch, two the head end of control lever respectively with two it is articulated to connect the notch.

2. The aviation dual force transmission path aileron and control surface trim transmission mechanism of claim 1, wherein the actuator comprises a housing, a driving motor, a motor plate, a gear set, a threaded rod and a thrust nut, the driving motor, the motor plate, the gear set, the threaded rod and the thrust nut are disposed in the housing, the driving motor and the threaded rod are disposed at the front side of the motor plate, the gear set is disposed at the back side of the motor plate, the threaded rod is provided with two parallel members, the threaded rod is driven by the gear set to rotate, each threaded rod is provided with a thrust nut, the thrust nut and the threaded rod form a screw nut kinematic pair, the thrust nut is provided with external threads, and the first force transmission rod and the second force transmission rod are respectively in threaded connection with the two thrust nuts on the threaded rod.

3. The aviation dual-force transmission path aileron and control surface trim transmission mechanism as claimed in claim 2, wherein a ball bearing is embedded in the motor plate, a gasket and a thrust bearing are sequentially arranged on two sides of the ball bearing respectively, a bushing penetrating through the thrust bearing, the gasket and the ball bearing is arranged on the front side of the thrust bearing on the front side of the motor plate, the threaded rod is arranged in the bushing in a penetrating manner, and the tail end of the threaded rod is connected with the gear of the gear set.

4. The aviation dual force transmission path aileron and control surface trim transmission of claim 2, wherein the end of the threaded rod is locked with a gear of the gear set by a self-locking nut, the gear constraining the motor plate rear thrust bearing between the gear and a shim on the motor plate rear side.

5. The aviation dual force transmission path aileron and control surface trim transmission of claim 2, wherein the thrust nut has a square end, the housing has a groove matching the square end of the thrust nut, the groove is formed along a length of the threaded rod, the square end of the thrust nut is inserted into the groove, and the thrust nut moves along the groove when the threaded rod rotates.