阅读说明：本技术 一种航空作动器 (Aviation actuator ) 是由 陈艳鹤 王勇 王祖军 朱泳龙 于 2021-09-30 设计创作，主要内容包括：本发明提供一种航空作动器,属于航空技术领域,该航空作动器的电机通过差动轮系与应急手摇装置连接,电机与终点开关电连接,终点开关与外部电路电连接,差动轮系与定轴齿轮连接,定轴齿轮与输出轴通过齿轮啮合,支架组件安装在输出轴上；定轴齿轮、支架组件、输出轴、终点开关位于盖板上；当电机无法正常工作时,应急手摇装置用于在扳动作用下,扳动作用产生的力矩通过差动轮系传递到定轴轮系,使得定轴轮系将力矩传递到输出轴,以使航空作动器正常工作。在飞机出现电路故障时,可使用手动模式操纵航空作动器,结构简单、紧凑、操作简便有效、可靠地实现既定功能,用于航空产品。(The invention provides an aviation actuator, which belongs to the technical field of aviation, wherein a motor of the aviation actuator is connected with an emergency hand-operated device through a differential gear train, the motor is electrically connected with a terminal switch, the terminal switch is electrically connected with an external circuit, the differential gear train is connected with a dead axle gear, the dead axle gear is meshed with an output shaft through a gear, and a support assembly is arranged on the output shaft; the dead axle gear, the bracket component, the output shaft and the end point switch are positioned on the cover plate; when the motor can not normally work, the emergency hand-cranking device is used for transmitting the torque generated by the pulling action to the ordinary gear train through the differential gear train under the pulling action, so that the ordinary gear train transmits the torque to the output shaft, and the aviation actuator normally works. When the circuit of the airplane has a fault, the aviation actuator can be operated in a manual mode, the structure is simple and compact, the operation is simple, convenient, effective and reliable, and the device can realize the set function and is used for aviation products.)

1. An aerospace actuator, comprising: a motor (1), an emergency hand-operated device (2), a differential gear train (3), a fixed-axis gear train (4), a bracket component (5), an output shaft (6), a terminal switch (7) and a cover plate (8),

the motor (1) is connected with the emergency hand-operated device (2) through a differential gear train (3), the motor (1) is electrically connected with an end switch (7), the end switch (7) is electrically connected with an external circuit, the differential gear train (3) is connected with an ordinary gear train (4), the ordinary gear train (4) is meshed with an output shaft (6) through a gear, and a support assembly (5) is installed on the output shaft (6); the ordinary gear train (4), the bracket component (5), the output shaft (6) and the end switch (7) are positioned on the cover plate (8); when the motor can not work normally, the emergency hand-cranking device (2) is used for transmitting the torque generated by the pulling action to the ordinary gear train (4) through the differential gear train (3) under the pulling action, so that the ordinary gear train (4) transmits the torque to the output shaft (6) to ensure that the aviation actuator works normally.

2. The actuator according to claim 1, wherein when the motor is in normal operation, the motor (1) drives the output shaft of the motor (1) to rotate, so that torque is transmitted to the differential gear train (3), the torque is transmitted to the ordinary gear train (4) through the differential gear train (3), the ordinary gear train (4) transmits the torque to the output shaft (6), and the bracket assembly (5) mounted on the output shaft (6) moves linearly along with the output shaft (6).

3. The aeronautical actuator according to claim 1, characterized in that the emergency hand cranking device (2) comprises: a bevel gear (2a), a bearing (2c), a support plate (2d), a spring (2e), a friction disc (2f), a steel ball (2g), a first fastener (2h), a first friction disc (2i), a second friction disc (2j), a thrust bearing (2k), a needle bearing (2l), a sealing ring (2m), an input shaft (2n), a first shell (2o), a second fastener (2p), a third fastener (2q) and a second shell (2r),

the input shaft (2n) is connected with the bevel gear (2a) in a clearance fit manner, the two bearings (2c) are arranged on the bevel gear (2n), and a gasket (2b) is arranged between the two bearings (2 c);

spline pairs are arranged at the centers of the support plate (2d), the friction disc (2f) and one end of the bevel gear (2a) far away from the gear, and the support plate (2d), the friction disc (2f) and the bevel gear (2a) are connected through splines;

a circle of groove is formed in one side, away from the bevel gear (2a), of the supporting plate (2d), the first friction plate (2i) is pasted on the friction disc (2f), a plurality of round holes are formed in one side, close to the bevel gear (2a), of the friction disc (2f), a spring (2e) is installed between the round holes of the friction disc (2f) and the groove of the supporting plate (2d), and an uneven groove is formed in one side, away from the bevel gear (2a), of the friction disc (2 f); the second friction plate (2j) is connected to the first shell (2o) through a third fastener (2q), and the second friction plate (2j) and the first friction plate (2i) are arranged oppositely;

a triangular disc is arranged at one end, close to a bevel gear (2a), of the input shaft (2n), a plurality of kidney-shaped holes and a plurality of round holes are formed in the triangular disc, the kidney-shaped holes and the round holes are uniformly arranged at intervals, a first fastening piece (2h) penetrates through the kidney-shaped holes in the input shaft (2n) and is installed on the friction disc (2f), and a steel ball (2g) is installed between the round hole in the input shaft (2n) and the groove in the friction disc (2 f);

the input shaft (2g) is provided with a thrust bearing (2k) and a needle bearing (2 l);

all components of the emergency hand-cranking device (2) are coaxial and are positioned in a sealing cavity formed by a first shell (2o) and a second shell (2r), the first shell (2o) and the second shell (2r) are connected through a second fastener (2p), and a sealing ring (2m) is arranged at the joint of the first shell (2o) and the second shell (2 r);

when the motor can not work normally, an input shaft (2n) is manually pulled, torque is transmitted from the input shaft (2n) and drives a steel ball (2g) in a round hole of a friction disc, the steel ball (2g) climbs from the bottommost part of a groove of the friction disc (2f) to a high point, a spring (2e) is compressed, a first friction disc (2i) is separated from a second friction disc (2j), the input shaft (2n) drives the friction disc (2f) to rotate by driving a first fastener (2h) connected to the friction disc (2f), the torque is transmitted to a bevel gear (2a) through a spline pair by the friction disc (2f), an output shaft of the motor (1) cannot rotate due to the holding torque of a motor clutch, the torque is transmitted to a fixed shaft gear train (4) through the bevel gear (2a) and a differential gear train (3), and the fixed shaft gear train (4) transmits the torque to an output shaft (6), the bracket component (5) arranged on the output shaft (6) moves linearly along with the output shaft (6).

4. The aero actuator of claim 3,

when the motor works normally, the steel ball (2g) is constrained between the groove of the friction disc (2f) and the round hole of the input shaft (2n) by the spring (2e), when torque is transmitted from the input shaft (2n) to drive the steel ball (2g) in the round hole of the friction disc (2f) to climb from the bottommost part of the groove of the friction disc (2f) to a high point, the spring (2e) is compressed, the first friction disc (2i) is separated from the second friction disc (2j), the first fastener (2h) connected to the friction disc (2f) drives the friction disc (2f) to rotate, and the torque is transmitted to the bevel gear (2a) by the friction disc (2f) through the spline pair; when torque is transmitted by the bevel gear (2a), the bevel gear (2a) drives the friction disc (2f) to rotate, and due to the action of the force of the spring (2e) and the action of the friction force between the first friction disc (2i) and the second friction disc (2j), the first fastener (2h) on the friction disc (2f) cannot drive the input shaft (2n) to rotate, so that the torque cannot be transmitted, and the torque can only be transmitted in a single direction from the end of the input shaft (2 n).

5. An actuator according to claim 3, characterised in that the friction disc (2f) is provided with 8 circular holes on the side adjacent to the bevel gear (2 a).

6. The aero actuator device according to claim 3, wherein the triangular disc has 3 kidney-shaped holes and 3 circular holes.

7. The aero actuator of claim 3,

one end of the input shaft (2n) far away from the bevel gear (2a) is provided with an outer hexagonal structure.

8. The aero actuator of claim 3,

the first casing (2o) and the second casing (2r) are made of high-strength aluminum alloy.

9. The aero actuator of claim 3,

the first fastener, the second fastener and the third fastener are screws.

Technical Field

The invention belongs to the technical field of aviation, and relates to an aviation actuator.

Background

An aviation actuator is an indispensable part in an airplane, and needs a compact structure and high reliability to realize torque transmission. Due to the particularity of the working conditions of aviation products, when a circuit for supplying power to the aviation actuator on the airplane breaks down, the aviation actuator cannot work normally.

Therefore, an aviation actuator is needed to work normally when a circuit fails, so as to improve safety.

Disclosure of Invention

In order to solve the problems in the prior art, the invention provides an aviation actuator, which comprises the following technical scheme:

an aerospace actuator, comprising: a motor, an emergency hand-operated device, a differential gear train, a dead axle gear, a bracket component, an output shaft, a terminal switch and a cover plate,

the motor is connected with the emergency hand-cranking device through a differential gear train, the motor is electrically connected with an end switch, the end switch is electrically connected with an external circuit, the differential gear train is connected with a dead axle gear, the dead axle gear is meshed with an output shaft through a gear, and the support assembly is installed on the output shaft; the dead axle gear, the bracket component, the output shaft and the end point switch are positioned on the cover plate; when the motor can not normally work, the emergency hand-cranking device is used for transmitting the torque generated by the pulling action to the ordinary gear train through the differential gear train under the pulling action, so that the ordinary gear train transmits the torque to the output shaft, and the aviation actuator normally works.

When the motor works normally, the motor drives an output shaft of the motor to rotate, torque is transmitted to the differential gear train, the torque is transmitted to the fixed shaft gear train through the differential gear train, the fixed shaft gear train transmits the torque to the output shaft, and the support assembly arranged on the output shaft moves linearly along with the output shaft.

Wherein, emergent hand cranking device includes: bevel gear, bearing, support plate, spring, friction disc, steel ball, first fastener, first friction disc, second friction disc, thrust bearing, needle bearing, seal ring, input shaft, first shell, second fastener, third fastener and second shell,

the input shaft is connected with the bevel gear in a clearance fit manner, the two bearings are arranged on the bevel gear, and a gasket is arranged between the two bearings;

spline pairs are arranged at the centers of the supporting plate and the friction disc and at one end of the bevel gear, which is far away from the gear, and the supporting plate and the friction disc are connected with the bevel gear through splines;

a circle of groove is formed in one side, away from the bevel gear, of the supporting plate, the first friction plate is pasted on the friction disc, a plurality of circular holes are formed in one side, close to the bevel gear, of the friction disc, springs are installed between the circular holes of the friction disc and the groove of the supporting plate, and uneven grooves are formed in one side, away from the bevel gear, of the friction disc; the second friction plate is connected to the first shell through a third fastener, and the second friction plate and the first friction plate are arranged oppositely;

a triangular disc is arranged at one end, close to the bevel gear, of the input shaft, a plurality of kidney-shaped holes and a plurality of round holes are formed in the triangular disc, the kidney-shaped holes and the round holes are evenly arranged at intervals, the first fastening pieces penetrate through the kidney-shaped holes in the input shaft and are installed on the friction disc, and the steel balls are installed between the round holes of the input shaft and the grooves of the friction disc;

the input shaft is provided with a thrust bearing and a needle bearing;

all components of the emergency hand-cranking device are coaxial and are positioned in a sealed cavity formed by a first shell and a second shell, the first shell and the second shell are connected through a second fastener, and a sealing ring is arranged at the joint of the first shell and the second shell;

when the motor can not work normally, the input shaft is pulled manually, torque is transmitted from the input shaft, and steel balls in round holes of the friction disc are driven, the steel balls climb from the bottommost part of a groove of the friction disc to a high point, the spring is compressed, the first friction disc is separated from the second friction disc, the input shaft drives the friction disc to rotate by driving a first fastener connected to the friction disc, the torque is transmitted to the bevel gear by the friction disc through the spline pair, the torque of the output shaft of the motor can not rotate due to the fact that the holding torque of the motor clutch is controlled, the torque is transmitted to the ordinary gear train through the bevel gear and the differential gear train, the ordinary gear train transmits the torque to the output shaft, and a support assembly arranged on the output shaft moves linearly along with the output shaft.

When the motor works normally, the steel balls are constrained between the grooves of the friction disc and the circular holes of the input shaft by the springs, when torque is transmitted from the input shaft to drive the steel balls in the circular holes of the friction disc to climb from the bottommost part of the grooves of the friction disc to a high point, the springs are compressed, the first friction disc and the second friction disc are separated, the first fastening piece connected to the friction disc drives the friction disc to rotate, and the torque is transmitted to the bevel gear by the friction disc through the spline pair; when torque is transmitted by the bevel gear, the bevel gear drives the friction disc to rotate, and due to the action of the spring force and the action of friction force between the first friction disc and the second friction disc, the first fastening piece on the friction disc cannot drive the input shaft to rotate, and torque cannot be transmitted, so that torque can only be transmitted in a single direction from the input shaft end.

Wherein, one side of the friction disc close to the bevel gear is provided with 8 round holes.

Wherein, set up 3 waist shape holes and 3 round holes on the triangle disc.

Wherein, the one end that the input shaft kept away from bevel gear wheel is provided with outer hexagonal structure.

The first shell and the second shell are made of aluminum alloy.

Wherein the first fastener, the second fastener and the third fastener are screws.

The first friction plate and the second friction plate can be made of No. 3 asbestos or resin-based materials.

The aviation actuator provided by the invention has the advantages that the emergency hand-operated device is arranged, so that when the circuit on an airplane is normal and the motor is normal, the aviation actuator can realize torque transmission through the driving of the motor, and when the circuit fails, the emergency hand-operated device is used for transmitting torque to realize torque transmission, so that an output shaft moves linearly, and the aviation actuator is compact in structure, simple to operate and high in reliability.

Drawings

FIG. 1 is a schematic structural diagram of an aero-actuator provided by the present invention;

FIG. 2 is a schematic structural view of an emergency hand cranking device provided by the present invention;

FIG. 3 is a schematic structural view of a support plate according to the present invention;

fig. 4 is a schematic structural diagram of an input shaft provided by the present invention.

Description of reference numerals:

1, a motor; 2-emergency hand-operated device; 3-differential gear train;

4-ordinary gear train; 5-a bracket assembly; 6-output shaft;

7-end switch; 8, covering a plate; 2 a-a bevel gear;

2 b-a gasket; 2 c-a bearing; 2 d-a support disk;

2 e-a spring; 2 f-friction disk; 2 g-steel ball;

2h — first fastener; 2 i-first friction plate; 2j — a second friction plate;

2 k-thrust bearing; 2 l-needle bearing; 2 m-sealing ring;

2 n-input shaft; 2o — first housing; 2p — second fastener;

2q — a third fastener; 2 r-second housing;

Detailed Description

The present invention is described in further detail below.

As shown in fig. 1, the present invention provides an aero-actuator device comprising: a motor 1, an emergency hand-operated device 2, a differential gear train 3, a fixed-axis gear train 4, a bracket component 5, an output shaft 6, a terminal switch 7 and a cover plate 8,

the motor 1 is connected with the emergency hand-cranking device 2 through the differential gear train 3, the motor 1 is electrically connected with the end point switch 7, an external circuit supplies power to the actuator through a socket on the actuator, the end point switch 7 cuts off the power supply and sends a position signal after reaching a specified stroke, the differential gear train 3 is connected with the ordinary gear train 4, the ordinary gear train 4 is meshed with the output shaft 6 through a gear, and the support assembly 5 is arranged on the output shaft 6; the ordinary gear train 4, the bracket component 5, the output shaft 6 and the end switch 7 are positioned on the cover plate 8; when external circuit trouble or motor self broke down, emergent hand cranking device 2 is used for under pulling the effect, and the moment that pulls the effect and produce transmits ordinary gear train 4 through differential gear train 3 for ordinary gear train 4 transmits output shaft 6 with moment, so that aviation actuator normally works.

In this application, when the motor normally worked, motor 1 drove the output shaft rotation of motor 1, with moment transmission to differential gear train 3 on, moment passes through differential gear train 3 and transmits ordinary gear train 4 to go up, and ordinary gear train 4 transmits output shaft 6 with moment, installs bracket component 5 on output shaft 6 and is linear motion along with output shaft 6.

As shown in fig. 2, emergency hand cranking device 2 includes: bevel gear 2a, bearing 2c, support plate 2d, spring 2e, friction disc 2f, steel ball 2g, first fastener 2h, first friction disc 2i, second friction disc 2j, thrust bearing 2k, needle bearing 2l, seal ring 2m, input shaft 2n, first housing 2o, second fastener 2p, third fastener 2q and second housing 2r,

wherein, input shaft 2n passes through clearance fit with bevel gear 2a and is connected, and two bearings 2c are installed on bevel gear 2n, are provided with packing ring 2b between two bearings 2c, and packing ring 2b can be separated two bearings, avoids the jamming friction.

Spline pairs are arranged at the centers of the support plate 2d, the friction disc 2f and one end of the bevel gear 2a, which is far away from the gear, and the support plate 2d, the friction disc 2f and the bevel gear 2a are connected through splines;

one side of the support plate 2d, which is far away from the bevel gear 2a, is provided with a circle of groove, and the first friction plate 2i is stuck on the friction plate 2 f.

The side of the friction disk 2f close to the gear of the bevel gear 2a is provided with a plurality of circular holes, and illustratively, as shown in fig. 3, the side of the friction disk 2f close to the gear of the bevel gear 2a is provided with 8 circular holes. A spring 2e is arranged between the round hole of the friction disc 2f and the groove of the support disc 2d, and an uneven groove is formed in one side, away from the bevel gear 2a, of the friction disc 2 f; the second friction plate 2j is connected to the first housing 2o by a third fastening member 2q, and the second friction plate 2j is disposed opposite to the first friction plate 2 i.

As shown in fig. 4, a triangular disc is arranged at one end of the input shaft 2n close to the bevel gear 2a, a plurality of kidney-shaped holes and a plurality of round holes are arranged on the triangular disc, the kidney-shaped holes and the round holes are uniformly arranged at intervals, the first fastening pieces 2h penetrate through the kidney-shaped holes on the input shaft 2n and are installed on the friction disc 2f, and the steel balls 2g are installed between the round holes of the input shaft 2n and the grooves of the friction disc 2 f. For example, 3 kidney-shaped holes and 3 round holes can be arranged on the triangular disc. Further, the end, far away from the bevel gear 2a, of the input shaft 2n is provided with an outer hexagonal structure, and the outer hexagonal structure is favorable for a wrench or a general tool to be directly wrenched without a special tool.

The input shaft 2g is provided with a thrust bearing 2k and a needle bearing 2 l; the hand-operated handle has a supporting function, reduces friction force during hand-operated operation, enables the rotation of each component to be smoothly carried out, and prolongs the durability of the components.

All components of the emergency hand cranking device 2 are coaxial and are positioned in a sealed cavity formed by a first shell 2o and a second shell 2r, the first shell 2o and the second shell 2r are connected through a second fastener 2p, a sealing ring 2m is arranged at the joint of the first shell 2o and the second shell 2r, and the sealing ring 2m can be made of rubber materials; the first case 2o and the second case 2r are made of aluminum alloy.

Illustratively, the first fastener, the second fastener, and the third fastener may be screws. Of course, bolts, rivets, etc. may be used.

When the motor cannot work normally, the input shaft 2n is manually pulled, torque is transmitted from the input shaft 2n, and drives the steel balls 2g in the round holes of the friction discs, so that the steel balls 2g climb from the bottommost part of the grooves of the friction discs 2f to a high point, the spring 2e is compressed, the first friction disc 2i is separated from the second friction disc 2j, the input shaft 2n drives the friction discs 2f to rotate by driving the first fasteners 2h connected to the friction discs 2f, the torque is transmitted to the bevel gear 2a from the friction discs 2f through the spline pair, the output shaft of the motor 1 cannot rotate due to the holding torque of the motor clutch, the torque is transmitted to the fixed shaft gear train 4 through the bevel gear 2a and the differential gear train 3, the fixed shaft gear train 4 transmits the torque to the output shaft 6, and the support assembly 5 installed on the output shaft 6 moves linearly along with the output shaft 6.

When the motor works normally, the steel ball 2g is constrained between the groove of the friction disc 2f and the round hole of the input shaft 2n by the spring 2e, when torque is transmitted from the input shaft 2n to drive the steel ball 2g in the round hole of the friction disc 2f to climb from the bottommost part of the groove of the friction disc 2f to a high point, the spring 2e is compressed, the first friction disc 2i is separated from the second friction disc 2j, the first fastener 2h connected to the friction disc 2f drives the friction disc 2f to rotate, and the torque is transmitted to the bevel gear 2a by the friction disc 2f through the spline pair; when torque is transmitted by the bevel gear 2a, the bevel gear 2a drives the friction disc 2f to rotate, and due to the action of the force of the spring 2e and the action of the friction force between the first friction disc 2i and the second friction disc 2j, the first fastening piece 2h on the friction disc 2f cannot drive the input shaft 2n to rotate, so that the torque cannot be transmitted, and the torque can only be transmitted in a single direction from the end of the input shaft 2 n.

The aviation actuator provided by the invention has the advantages that the emergency hand-operated device is arranged, so that when the circuit on an airplane is normal and the motor is normal, the aviation actuator can realize torque transmission through the driving of the motor, and when the circuit fails, the emergency hand-operated device is used for transmitting torque to realize torque transmission, so that an output shaft moves linearly, and the aviation actuator is compact in structure, simple to operate and high in reliability.

The foregoing is merely a detailed description of the embodiments of the present invention, and some of the conventional techniques are not detailed. The scope of the present invention is not limited thereto, and any changes or substitutions that can be easily made by those skilled in the art within the technical scope of the present invention will be covered by the scope of the present invention.