Novel aviation actuating mechanism

Abstract

The novel aviation actuating mechanism comprises a short rocker arm assembly, an upper shell, a motor, a long rocker arm assembly, an output shaft and a lower shell, a guide actuator assembly is arranged in the upper shell, and the bottom of the guide actuator assembly drives the output shaft to rotate through a small-tooth-difference gear train arranged in the lower shell; the short rocker arm assembly comprises a first bevel driving gear and a first driven bevel gear which are connected in a matched mode, the first driven bevel gear is arranged on a first transmission shaft extending horizontally in a sleeving mode, the first transmission shaft is driven to rotate through transmission of the first bevel gear and the first driven gear, and the long rocker arm assembly and the short rocker arm assembly are symmetrically distributed relative to the upper shell. The long rocker arm assembly and the short rocker arm assembly have the advantages that the structure is simple and reliable, the size is small, the weight is light, the transmission torque is large, the operation mode is flexible and convenient, and the long rocker arm assembly and the short rocker arm assembly are widely applied to aviation actuating mechanisms.

Description

Technical Field

[0001] The present invention belongs to the technical field of aerospace rotary actuators, and particularly relates to a novel aerospace actuator. Background Art

[0002] An aerospace rotary actuator is an electromechanical or hydraulic drive device widely used in the aerospace field. It is mainly used to convert control signals into rotary mechanical motion to achieve precise control of aircraft components. It can convert electrical energy / hydraulic energy into rotary motion to drive the control surfaces or mechanical components of the aircraft, and has the function of responding to the instructions of the flight control system and adjusting the angles of components such as rudder surfaces and engine nozzles. At present, redundant design is required for actuators in important parts of aircraft, but the current aerospace actuator often fails to meet the requirements. It not only has a large volume and weight, but also has insufficient output torque. At the same time, there is also a problem of single operation mode, and it is impossible to complete the control of the actuator through manual operation when the electric mode fails.

[0003] A patent for invention named "An Electric Push Rod with Redundant Differential Output" with the application number "CN202411494887.4" discloses an electric push rod with redundant differential output, including a motor, a planetary gear set, a differential, a first push rod assembly, a second push rod assembly and a switch assembly. When the external force received by the output ends of the first push rod assembly and the second push rod assembly in the direction of their output end movement exceeds a preset value, the planet carrier stops rotating, and the motor is still in the starting state of forward or reverse rotation. Then the ring gear rotates in reverse or forward to drive the fork to rotate. The force of the fork on the convex shaft overcomes the elastic force of the spring, drives the sliding plate to move, the sliding plate drives the dial to approach and press the microswitch, and shuts down the motor to avoid motor overload. However, it still has problems of single operation mode and low mission reliability. Therefore, a novel aerospace actuator is urgently needed to solve the above existing problems. Summary of the Invention

[0004] In view of this, the present invention proposes a novel aerospace actuator, which is applied to the field of aerospace rotary actuators to solve the technical problems of complex existing structure, single operation mode, large volume and weight, inability to meet the requirements of transmission torque, and low mission reliability.

[0005] In order to achieve the above technical objectives, the specific technical solutions adopted by the present invention are as follows:

[0006] A novel aviation actuator comprises a short rocker arm assembly, an upper housing, a motor, a long rocker arm assembly, an output shaft and a lower housing. The short rocker arm assembly and the long rocker arm assembly extend into the upper housing from the horizontal ends of the upper housing respectively. The motor is arranged above the upper housing, the output shaft is arranged below the upper housing and is connected with the upper housing through a transmission through the interior of the lower housing. An actuator assembly is arranged inside the upper housing, the top of the actuator assembly is connected with the motor through transmission, and rotates horizontally under the drive of the motor. The bottom of the actuator assembly drives the output shaft to rotate through a small-tooth difference gear train arranged inside the lower housing, thereby outputting a positive direction output. Output torque or reverse output torque, the short rocker arm assembly includes a first bevel driving gear and a first driven bevel gear matched and connected, the first driven bevel gear is sleeved on the first horizontally extending transmission shaft, and the first transmission shaft is driven to rotate through the transmission of the first bevel gear and the first driven gear. The long rocker arm assembly is provided with a second driving bevel gear, a second driven bevel gear and a second transmission shaft. The end of the long rocker arm assembly has the same structure as the end of the short rocker arm assembly and is symmetrically distributed about the upper shell, thereby ensuring that both the long rocker arm assembly and the short rocker arm assembly can output torque, and different operating conditions can be met by selecting rocker arms and steering of different lengths.

[0007] Furthermore, a worm gear pair is provided inside the upper shell body, and the worm gear pair is arranged on the horizontal side of the actuator assembly. The input end of the worm gear pair is respectively matched and connected with the first transmission shaft and the second rotating shaft extending into the upper shell body, and the output end of the worm gear pair is matched and connected with the actuator assembly.

[0008] Furthermore, the actuator assembly includes an eccentric actuator, the small-tooth difference gear train includes an inner cylindrical first gear, a double gear and an inner cylindrical second gear, the eccentric actuator adopts an eccentric shaft, the eccentric actuator cooperates with the double gear in the small-tooth difference gear train, and the double gear cooperates with the inner cylindrical second gear.

[0009] Furthermore, a transmission bevel gear is arranged between the small-tooth difference gear train and the output shaft. The transmission bevel gear is located below the small-tooth difference gear train. The upper end of the transmission bevel gear is matched and connected with the second inner cylindrical gear, and the lower end of the transmission bevel gear is transmission-connected with the passive wheel sleeved on the output shaft, thereby driving the output shaft to output torque.

[0010] Furthermore, the worm gear pair includes a transmission worm wheel and a transmission worm. The transmission worm wheel is horizontally arranged, and the horizontal ends of the transmission worm wheel are respectively matched and connected with the first transmission shaft and the second transmission shaft. The transmission worm is vertically arranged, and the outer ring of the transmission worm is transmission-connected to the eccentric guide.

[0011] Furthermore, the bottom of the upper shell is connected to the top of the lower shell by screws, and the outer shell of the motor is also connected to the upper shell by screws.

[0012] Furthermore, a short rocker arm housing is provided inside the short rocker arm assembly. The first driving bevel gear, the first driven bevel gear, and the first transmission shaft are all located inside the short rocker arm housing. A long rocker arm housing is provided inside the short rocker arm assembly. The second driving bevel gear, the second driven bevel gear, and the second transmission shaft are all located inside the long rocker arm housing. The short rocker arm housing and the long rocker arm housing are respectively fixedly connected to the horizontal two-end side walls of the upper housing by screws.

[0013] Furthermore, a driving shaft is provided inside the motor. The driving shaft extends vertically downward into the inside of the guiding actuator assembly and drives the eccentric actuator to rotate by connecting with the inner ring of the eccentric actuator.

[0014] Furthermore, a clutch is provided inside the motor to prevent the motor from having a follow-up phenomenon.

[0015] Furthermore, a multi-headed worm is provided inside the worm gear pair to prevent the short rocker arm assembly and the long rocker arm assembly from having a follow-up phenomenon.

[0016] Adopting the above technical solutions, the present invention can also bring the following beneficial effects:

[0017] 1. The present invention mentions a new type of aviation actuation actuator, which has two working modes, electric and manual, as backups for each other, can prevent single-point failure faults, and greatly improves the task reliability of the aviation actuation mechanism. The structure of the present invention is simple and reliable, small in size, light in weight, large in transmission torque, and flexible and convenient to operate. It can be widely used in aviation actuation actuators that require redundant working modes.

[0018] 2. The present invention mentions a new type of aviation actuation actuator. Among them, the worm gear pair has self-locking property, which can prevent the short rocker arm assembly and the long rocker arm assembly from having a follow-up phenomenon. The motor has a clutch hold, which can prevent the motor from having a follow-up phenomenon. By using a planetary gear train with few teeth, it has the advantages of simple structure, large transmission ratio, and small size. By using transmission bevel gears, it has the advantage of reversing. At the same time, the short rocker arm assembly and the long rocker arm assembly are symmetrically arranged at both ends, and torque can be output from any end. It can meet different working conditions by changing the length and rotation direction of the rocker arm assembly. And it has two working modes, electric and manual, as backups for each other. And when one mode is working, the other is in a self-locking state, with high task reliability and is suitable for large-scale promotion. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required to be used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0020] Figure 1 The present invention provides a structural schematic diagram of a novel aviation actuating actuator;

[0021] Figure 2 It is a schematic diagram of the connection structure between the gear train with a small tooth difference and the transmission bevel gear in the present invention;

[0022] Figure 3 It is a schematic structural diagram of the short rocker arm assembly of the present invention;

[0023] Figure 4 It is a schematic diagram of the connection structure between the actuator assembly and the small-tooth difference gear train in the present invention;

[0024] Figure 5 It is a schematic diagram of the connection structure of the transmission worm wheel and the transmission worm in the present invention;

[0025] 1. Short rocker arm assembly; 2. Upper housing; 3. Motor; 4. Long rocker arm assembly; 5. Output shaft; 6. Lower housing; 7. Actuator assembly; 8. Small-tooth differential gear train; 9. Transmission bevel gear; 10. Worm gear pair; 101. First active bevel gear; 102. First transmission shaft; 103. First driven bevel gear; 701. Eccentric actuator; 801. First inner cylindrical gear; 802. Double gear; 803. Second inner cylindrical gear; 111. Transmission worm wheel; 112. Transmission worm. DETAILED DESCRIPTION

[0026] The embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0027] The following describes the embodiments of the present invention through specific examples, and those skilled in the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments. The present invention can also be implemented or applied through other different specific embodiments, and the details in this specification can also be modified or changed in various ways based on different viewpoints and applications without departing from the spirit of the present invention. It should be noted that the following embodiments and features in the embodiments can be combined with each other without conflict. Based on the embodiments in the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work belong to the scope of protection of the present invention.

[0028] It should be noted that the following describes various aspects of embodiments within the scope of the appended claims. It will be apparent that the aspects described herein can be embodied in a wide variety of forms, and any specific structure and / or function described herein is illustrative only. Based on the present invention, those skilled in the art should understand that one aspect described herein can be implemented independently of any other aspect, and two or more of these aspects can be combined in various ways. For example, any number of aspects described herein can be used to implement an apparatus and / or practice a method. Additionally, this apparatus and / or method can be implemented using other structures and / or functionality in addition to one or more of the aspects described herein.

[0029] It should also be noted that the drawings provided in the following embodiments only schematically illustrate the basic concept of the present invention. Only the components related to the present invention are shown in the drawings, rather than being drawn according to the number, shape, and size of the components in actual implementation. The type, quantity, and ratio of each component in actual implementation can be arbitrarily changed, and the component layout type may also be more complex.

[0030] In addition, in the following description, specific details are provided to facilitate a thorough understanding of the examples. However, those skilled in the art will understand that the aspects described can be practiced without these specific details.

[0031] In one embodiment of the present invention, as Figures 1 to 5 shown, a new type of aviation actuation mechanism includes a short rocker arm assembly 1, an upper housing 2, a motor 3, a long rocker arm assembly 4, an output shaft 5, and a lower housing 6. The short rocker arm assembly 1 and the long rocker arm assembly 4 extend into the upper housing 2 from the horizontal two ends of the upper housing 2 respectively. The motor 3 is arranged above the upper housing 2, and the output shaft 5 is arranged below the upper housing 2 and is in transmission connection with the upper housing 2 through being arranged inside and passing through the lower housing 6. A guide actuator assembly 7 is arranged inside the upper housing 2. The top of the guide actuator assembly 7 is in transmission connection with the motor 3 and rotates horizontally driven by the motor 3. The bottom of the guide actuator assembly 7 drives the output shaft 5 to rotate through a planetary gear train 8 arranged inside the lower housing 6, so as to output a positive-direction output torque or a negative-direction output torque. The short rocker arm assembly 1 includes a first driving bevel gear 101 and a first driven bevel gear 103 which are matingly connected. The first driven bevel gear is sleeved on a horizontally extending first transmission shaft 102, and drives the first transmission shaft 102 to rotate through the transmission of the first driving bevel gear 101 and the first driven bevel gear 103. The long rocker arm assembly 4 internally is provided with a second driving bevel gear, a second driven bevel gear, and a second transmission shaft. The end part of the long rocker arm assembly 4 has the same structure as the end part of the short rocker arm assembly 1 and is symmetrically distributed about the upper housing 2, so as to ensure that both the long rocker arm assembly 4 and the short rocker arm assembly 1 can output torque, and different use working conditions can be satisfied by selecting rocker arms with different lengths and rotations.

[0032] The drive component 7 includes an eccentric drive 701. The planetary gear train 8 includes an inner cylindrical first gear 801, a double gear 802, and an inner cylindrical second gear 803. The eccentric drive 701 uses an eccentric shaft. The eccentric drive 701 cooperates with the double gear 802 in the planetary gear train 8, and the double gear 802 cooperates with the inner cylindrical second gear 803. A transmission bevel gear 9 is provided between the planetary gear train 8 and the output shaft 5. The transmission bevel gear 9 is located below the planetary gear train 8. The upper end of the transmission bevel gear 9 is connected to the inner cylindrical second gear 803 in a matching manner, and the lower end of the transmission bevel gear 9 is connected to a driven wheel sleeved on the output shaft 5 in a transmission manner, thereby driving the output shaft 5 to output torque.

[0033] A worm and worm gear pair 10 is provided inside the upper housing 2. The worm and worm gear pair 10 is provided on the horizontal side of the drive component 7. The input ends of the worm and worm gear pair 10 are respectively connected to a first transmission shaft 102 and a second rotating shaft extending into the upper housing 2 in a matching manner, and the output end of the worm and worm gear pair 10 is connected to the drive component 7 in a matching manner. The worm and worm gear pair 10 includes a driving worm wheel 111 and a driving worm 112. The driving worm wheel 111 is horizontally arranged, and the two horizontal ends of the driving worm wheel 111 are respectively connected to the first transmission shaft 102 and the second transmission shaft in a matching manner. The driving worm 112 is vertically arranged, and the outer ring of the driving worm 112 is connected to the eccentric drive 701 in a transmission manner.

[0034] The bottom of the upper housing 2 is connected to the top of the lower housing 6 by screws, and the outer shell of the motor 3 is also connected to the upper housing 2 by screws. A short rocker arm housing is provided inside the short rocker arm assembly 1. The first driving bevel gear 101, the first driven bevel gear 103, and the first transmission shaft 102 are all located inside the short rocker arm housing. A long rocker arm housing is provided inside the short rocker arm assembly 1. The second driving bevel gear, the second driven bevel gear, and the second transmission shaft are all located inside the long rocker arm housing. The short rocker arm housing and the long rocker arm housing are respectively fixedly connected to the side walls at the two horizontal ends of the upper housing 2 by screws.

[0035] A driving shaft is provided inside the motor 3. The driving shaft extends vertically downward into the drive component 7 and drives the eccentric drive 701 to rotate by connecting with the inner ring of the eccentric drive 701. A clutch is provided inside the motor 3 to prevent the motor 3 from having a follow-up phenomenon. A multi-headed worm is provided inside the worm and worm gear pair 10, which has a self-locking structure to prevent the short rocker arm assembly 1 and the long rocker arm assembly 4 from having a follow-up phenomenon.

[0036] During the use of the present invention, when the electric work is in progress, the motor 3 cooperates with the actuator assembly 7, the eccentric actuator 701 is an eccentric shaft, the double gear 802 rotates around the axis of the eccentric actuator 701, the double gear 802 cooperates with the second inner cylindrical gear 803, the second inner cylindrical gear 803 cooperates with the transmission bevel gear 9, and the transmission bevel gear 9 drives the output shafts 5 on both sides to output torque by reversing. In this process, since the transmission worm 112 is a multi-head worm, it has a self-locking function, because the torque will not be lost from the hand-cranked end through the worm gear pair 10; the hand-cranked work When in operation, the first active bevel gear 101 is rotated to transmit the torque to the first transmission shaft 102 through the first driven bevel gear 103. The first transmission shaft 102 is rigidly connected with the transmission worm 112, and the transmission worm 112 is meshed with the transmission worm wheel 111, thereby driving the actuator assembly 7 to rotate, thereby transmitting the hand-cranked torque to the output shaft 5 through the small-tooth difference gear train 8 and the transmission bevel gear 9. In short, the present invention has the advantages of simple and reliable structure, small size and light weight, large transmission torque, flexible and convenient operation mode, and is widely used in aviation actuation actuators that require redundant working modes.

[0037] The above is only a specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that can be easily thought of by a person skilled in the art within the technical scope disclosed by the present invention should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims

1. A new type of aviation actuation actuator, characterized in that: The invention comprises a short rocker arm assembly (1), an upper housing (2), a motor (3), a long rocker arm assembly (4), an output shaft (5) and a lower housing (6), wherein the short rocker arm assembly (1) and the long rocker arm assembly (4) extend into the upper housing (2) from both horizontal ends of the upper housing (2), respectively; the motor (3) is arranged above the upper housing (2); the output shaft (5) is arranged below the upper housing (2) and is transmission-connected with the upper housing (2) by being arranged inside the lower housing (6); a guide assembly (7) is arranged inside the upper housing (2); the top of the guide assembly (7) is transmission-connected with the motor (3) and rotates horizontally under the drive of the motor (3); the bottom of the guide assembly (7) drives the output shaft (5) to rotate through a small-tooth difference gear train (8) arranged inside the lower housing (6), thereby The invention outputs a positive direction output torque or a reverse direction output torque. The short rocker arm assembly (1) comprises a first active bevel gear (101) and a first driven bevel gear (103) which are matched and connected. The first driven bevel gear (103) is sleeved on a first transmission shaft (102) extending horizontally. The first active bevel gear (101) and the second driven bevel gear drive the first transmission shaft (102) to rotate. The long rocker arm assembly (4) is provided with a second active bevel gear, a second driven bevel gear and a second transmission shaft. The end of the long rocker arm assembly (4) has the same structure as the end of the short rocker arm assembly (1) and is symmetrically distributed with respect to the upper shell (2), thereby ensuring that both the long rocker arm assembly (4) and the short rocker arm assembly (1) can output torque. Different use conditions can be met by selecting rocker arms of different lengths and steering.

2. The novel aviation actuation actuator according to claim 1, wherein: A worm gear pair (10) is arranged inside the upper shell (2), and the worm gear pair (10) is arranged on a horizontal side of the actuator assembly (7). The input end of the worm gear pair (10) is respectively matched and connected with a first transmission shaft (102) and a second rotating shaft extending deep into the upper shell (2), and the output end of the worm gear pair (10) is matched and connected with the actuator assembly (7).

3. The novel aviation motion actuator according to claim 2, characterized in that: The actuator assembly (7) includes an eccentric actuator (701), the small-tooth difference gear train (8) includes an inner cylindrical first gear (801), a double gear (802) and an inner cylindrical second gear (803), the eccentric actuator (701) uses an eccentric shaft, the eccentric actuator (701) and the double gear (802) in the small-tooth difference gear train (8) cooperate with each other, and the double gear (802) and the inner cylindrical second gear (803) cooperate with each other.

4. The novel aviation actuation actuator according to claim 3, wherein: A transmission bevel gear (9) is arranged between the small-tooth difference gear train (8) and the output shaft (5), the transmission bevel gear (9) is located below the small-tooth difference gear train (8), the upper end of the transmission bevel gear (9) is matched and connected with the second inner cylindrical gear (803), and the lower end of the transmission bevel gear (9) is transmission-connected with a driven wheel sleeved on the output shaft (5), thereby driving the output shaft (5) to output torque.

5. The novel aviation actuation actuator according to claim 4, wherein: The worm and worm gear pair (10) includes a driving worm gear (111) and a driving worm (112). The driving worm gear (111) is horizontally arranged, and the two horizontal ends of the driving worm gear (111) are respectively connected to the first transmission shaft (102) and the second transmission shaft in a matching manner. The driving worm (112) is vertically arranged, and the outer ring of the driving worm (112) is in transmission connection with the eccentric guide (701).

6. A novel aviation actuation actuator according to claim 5, characterized in that: The bottom of the upper housing (2) is connected to the top of the lower housing (6) by screws, and the outer shell of the motor (3) is also connected to the upper housing (2) by screws.

7. The novel aviation actuation actuator according to claim 6, wherein: A short rocker arm housing is arranged inside the short rocker arm assembly (1). The first driving bevel gear (101), the first driven bevel gear (103), and the first transmission shaft (102) are all located inside the short rocker arm housing. A long rocker arm housing is arranged inside the short rocker arm assembly (1). The second driving bevel gear, the second driven bevel gear, and the second transmission shaft are all located inside the long rocker arm housing. The short rocker arm housing and the long rocker arm housing are respectively fixedly connected to the side walls at the two horizontal ends of the upper housing (2) by screws.

8. A novel aviation actuation actuator according to claim 7, characterized in that: A driving shaft is arranged inside the motor (3). The driving shaft extends vertically downward into the guide assembly (7) and drives the eccentric guide (701) to rotate through connection with the inner ring of the eccentric guide (701).

9. The novel aviation actuation actuator according to claim 8, wherein: A clutch is arranged inside the motor (3) to prevent the motor (3) from having a follow-up phenomenon.

10. A novel aviation actuation actuator as described in claim 9, characterized in that: A multi-headed worm is arranged inside the worm and worm gear pair (10) to prevent the short rocker arm assembly (1) and the long rocker arm assembly (4) from having a follow-up phenomenon.

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