Servo-attached rudder mechanism active separation device and active separation control method

Abstract

The invention relates to a servo-attached rudder mechanism active separation device and an active separation control method. The device comprises a servo, multiple connecting rods, a gas rudder, an opening ring, a closing ring, a tensioning rope, a through hole screw and a spring. The servo is provided with short-time high-temperature fusing equipment; the multiple connecting rods are connected with an output shaft of the servo; one end of the first tensioning rope is restrained on the first through hole screw, the other end of the first tensioning rope penetrates through the first through hole screw, the multi-connecting rod is connected with the fusing equipment, and pre-tightening force is applied between the multi-connecting rod and the servo; one end of the closing-in ring is fixed on the servo, the opening ring is sleeved outside the closing-in ring, and the opening ring and the closing-in ring are coaxial; the spring is arranged in the opening ring, and two ends are respectively contacted with the closing ring and the opening ring; one end of a second tensioning rope is restrained on the second through hole screw, the other end of the second tensioning rope penetrates through the second through hole screw, the spring and the closing ring to be connected with the fusing equipment, and pre-tightening force is applied between the opening ring and the closing ring; the gas vane penetrates through the opening ring to be fixedly connected with the multiple connecting rods. According to the separation device, separation of boosting power and the gas vane is completed.

Description

Technical Field

[0001] The present invention belongs to the technical field of flight control, and particularly relates to an active separation device for a rudder mechanism with attached servo and an active separation control method. Background Art

[0002] With the development of unmanned aerial vehicles and their related hardware technologies in recent years, air target groups represented by "low, slow, and small" are difficult to counter in the medium and long distances due to characteristics such as low cost, difficult detection, and saturation strikes. To protect key facilities and equipment, countering group targets has become one of the key research directions. For rapid countermeasures, the demand for rapid takeoff and attitude control during the takeoff phase of medium and high subsonic aircraft is prominent. Aircraft using a push-control integrated separation device and its control method have the active separation characteristics of bearing thrust and torque during the takeoff phase without relying on gunpowder, and are expected to become the main separation form during the takeoff phase of future new-generation aircraft for countering "low, slow, and small" targets.

[0003] Existing aircraft mainly rely on overload separation devices, bolt blasting devices, and mechanism release devices for booster separation, and the gas rudder is fixedly connected to the fuselage and cannot be separated. There are the following technical deficiencies respectively: 1) Overload separation cannot actively define the separation timing, resulting in increased difficulty in the design of the control system; 2) Blasting bolts lack small-size specifications and contain pyrotechnic devices, with strong field restrictions; 3) The moving mechanism in the mechanism release device is complex and prone to jamming, and there is a driving motor; 4) Sharing the same servo for the gas rudder and the air rudder increases the hinge moment, the number of actuators, and the control complexity during level flight. Summary of the Invention

[0004] The purpose of the present invention is to provide an active separation device for a rudder mechanism with attached servo and an active separation control method, and a set of separation devices complete the separation of the boosting force and the gas rudder.

[0005] To achieve the above object, the present invention provides an active separation device for an attachment servo rudder mechanism, comprising a servo, a multi-link, a gas rudder, an opening ring, a closing ring, and a plurality of tension ropes, through-hole screws, and springs; the servo is provided with a short-time high-temperature fusing device; the multi-link is connected to the output shaft of the servo; one end of the first tension rope is constrained on the first through-hole screw, and the other end passes through the first through-hole screw, the multi-link and is connected to the short-time high-temperature fusing device in the servo, and the first through-hole screw adjusts the tightness of the first tension rope, thereby adjusting the pre-tightening force applied between the multi-link and the servo; one end of the closing ring is fixed to the servo; the opening ring is sleeved outside the closing ring, and the opening ring and the closing ring are coaxial; the spring is placed inside the opening ring, one end of the spring contacts the closing ring, and the other end contacts the opening ring; one end of the second tension rope is constrained on the second through-hole screw, and the other end passes through the second through-hole screw, the spring, the closing ring and is connected to the short-time high-temperature fusing device in the servo, and the second through-hole screw adjusts the tightness of the second tension rope, thereby adjusting the pre-tightening force applied between the opening ring and the closing ring; the gas rudder passes through the opening ring and is fixedly connected to the multi-link.

[0006] In the above active separation device for an attachment servo rudder mechanism, the multi-link is provided with an annular connecting member, and the inner surface of the annular connecting member is mechanically engaged with the outer surface of the output shaft of the servo to realize the connection between the multi-link and the output shaft of the servo.

[0007] In the above active separation device for an attachment servo rudder mechanism, the first through-hole screw is threadedly connected to the annular connecting member; the first tension rope passes through the through-hole of the first through-hole screw, the annular connecting member, the output shaft of the servo and is connected to the short-time high-temperature fusing device in the servo.

[0008] In the above active separation device for an attachment servo rudder mechanism, the closing ring is an annular structure with an outer ring surface that tapers from the end close to the servo to the end far from the servo, and the opening ring is an annular structure with an inner ring surface that flares from the end far from the servo to the end close to the servo, and the inner ring surface of the opening ring is mechanically engaged with the outer ring surface of the closing ring.

[0009] In the above active separation device for an attachment servo rudder mechanism, both the end of the closing ring close to the servo and the end of the opening ring far from the servo are closed ends, and both ends of the spring respectively contact the closed ends of the closing ring and the opening ring; by means of the tension of the second tension rope, the second through-hole screw applies pressure to the spring, causing the spring to be compressed between the closed end of the closing ring and the closed end of the opening ring.

[0010] The above-mentioned active separation device for the rudder mechanism with attached servo, wherein a threaded hole is provided at the closed end of the opening ring, and the second through-hole screw rotates through the threaded hole at the closed end of the opening ring from outside the opening ring and then inserts into the spring.

[0011] The above-mentioned active separation device for the rudder mechanism with attached servo, wherein a semi-circular groove is provided at one end of the closing ring away from the servo; a through-hole is provided on the opening ring; the gas rudder includes a rudder surface, a rotating shaft and a fixedly connected rocker arm; the fixedly connected rocker arm is fixedly connected with the multi-link; one end of the rotating shaft is connected to the rudder surface, and the other end passes through the through-hole of the opening ring and the semi-circular groove of the closing ring and is fixedly connected with the fixedly connected rocker arm.

[0012] The above-mentioned active separation device for the rudder mechanism with attached servo, wherein the tensioning rope is a high-strength soft thin wire with a small elongation at break.

[0013] Another technical solution provided by the present invention is an active separation control method for a rudder mechanism, which is realized by using the above-mentioned active separation device for the rudder mechanism with attached servo. The method includes: 1) adjusting the tightness of the first tensioning rope through the first through-hole screw, so as to adjust the pre-tightening force applied between the multi-link and the servo; adjusting the tightness of the second tensioning rope through the second through-hole screw, so as to adjust the pre-tightening force applied between the opening ring and the closing ring; 2) after the servo receives an angle command, it drives the multi-link to rotate, thereby driving the gas rudder to deflect; 3) after the gas rudder deflection is completed, it sends angle information feedback to the servo; 4) the short-time high-temperature fusing device of the servo fuses the first tensioning rope; 5) the pre-tightening force between the multi-link and the servo is released, and the multi-link moves away from the servo along the axis of the first through-hole screw; 6) the short-time high-temperature fusing device of the servo fuses the second tensioning rope; 7) the pre-tightening force between the opening ring and the closing ring is released, the compression force applied to the spring is removed, the spring elongates, and axially pushes the opening ring to move away from the closing ring; 8) the movement of the opening ring drives the gas rudder to move away from the closing ring, thereby realizing the active separation of the gas rudder.

[0014] Compared with the prior art, the beneficial technical effects of the present invention are:

[0015] (1) Compared with the active separation mechanism using motor control, the active separation device for the rudder mechanism with attached servo of the present invention has a compact structure, a small volume and a weight reduction of more than 30%;

[0016] (2) Compared with the active separation mechanism using explosive bolts, the active separation device for the rudder mechanism with attached servo of the present invention does not contain pyrotechnic devices, has a wide application range and no instantaneous impact load;

[0017] (3) Compared with the existing separation mechanism, the present invention can complete the separation of the assisting driving force and the gas rudder through a set of separation devices. Description of the Drawings

[0018] The active separation device and the active separation control method of the rudder mechanism with attached servo of the present invention are given by the following embodiments and drawings.

[0019] Figure 1 It is an exploded view of the active separation device of the rudder mechanism with attached servo according to an embodiment of the present invention. Detailed implementation manners

[0020] The following will Figure 1 make a further detailed description of the active separation device and the active separation control method of the rudder mechanism with attached servo of the present invention.

[0021] Figure 1 Shown is an exploded view of the active separation device of the rudder mechanism with attached servo according to an embodiment of the present invention.

[0022] As Figure 1 , the active separation device of the rudder mechanism with attached servo in this embodiment includes a servo 100, a multi-link 200, a gas rudder 300, a plurality of tension ropes, a plurality of through-hole screws, a plurality of springs 600, an open-ring 700 and a closed-ring 800;

[0023] The servo 100 is provided with a short-time high-temperature fusing device;

[0024] The multi-link 200 is connected to the output shaft 101 of the servo 100; one end of a first tension rope 401 is constrained on a first through-hole screw 501, and the other end passes through the first through-hole screw 501, the multi-link 200 and is connected to the short-time high-temperature fusing device in the servo 100. The first through-hole screw 501 adjusts the tightness of the first tension rope 401, so as to adjust the pre-tightening force applied between the multi-link 200 and the servo 100;

[0025] One end of the closed-ring 800 is fixed on the servo 100; the open-ring 700 is sleeved outside the closed-ring 800, and the open-ring 700 and the closed-ring 800 are coaxial;

[0026] The spring 600 is placed inside the open-ring 700. One end of the spring 600 contacts the closed-ring 800, and the other end contacts the open-ring 700; one end of a second tension rope 402 is constrained on a second through-hole screw 502, and the other end passes through the second through-hole screw 502, the spring 600, the closed-ring 800 and is connected to the short-time high-temperature fusing device in the servo 100. The second through-hole screw 502 adjusts the tightness of the second tension rope 402, so as to adjust the pre-tightening force applied between the open-ring 700 and the closed-ring 800;

[0027] The gas rudder 300 passes through the open-ring 700 and is fixedly connected to the multi-link 200.

[0028] The multi-link 200 is provided with an annular connecting member 201. The inner surface of the annular connecting member 201 is mechanically engaged with the outer surface of the output shaft of the servo 100 to realize the connection between the multi-link 200 and the output shaft of the servo 100. The first through-hole screw 501 is threadedly connected to the annular connecting member 201. One end of the first tension rope 401 is constrained on the first through-hole screw 501, and the other end passes through the through-hole of the first through-hole screw 501, the annular connecting member 201 of the multi-link 200, the output shaft of the servo 100 and is connected to the short-time high-temperature fusing device in the servo 100.

[0029] The closing ring 800 is an annular structure with an outer ring surface that tapers from the end close to the servo to the end far from the servo. That is, along the central axis direction of the closing ring 800, the outer diameter of the closing ring 800 gradually decreases from the end close to the servo to the end far from the servo. The end of the closing ring 800 close to the servo is a closed end, with a hole left for the second tension rope 402 to pass through, and a semi-circular groove 801 is provided at the end of the closing ring 800 far from the servo.

[0030] The opening ring 700 is an annular structure with an inner ring surface that opens from the end far from the servo to the end close to the servo. That is, along the central axis direction of the opening ring 700, the outer diameter of the opening ring 700 gradually increases from the end far from the servo to the end close to the servo. The inner ring surface of the opening ring 700 is mechanically engaged with the outer ring surface of the closing ring 800. The end of the opening ring 700 far from the servo is a closed end, and a threaded hole is provided at this closed end.

[0031] The spring 600 is placed inside the opening ring 700. One end of the spring 600 contacts the closed end of the closing ring 800, and the other end of the spring 600 contacts the closed end of the opening ring 700. The second through-hole screw 502 rotates through the threaded hole at the closed end of the opening ring 700 from the outside of the opening ring 700 and then inserts into the spring 600. One end of the second tension rope 402 is constrained on the second through-hole screw 502, and the other end of the second tension rope 402 passes through the through-hole of the second through-hole screw 502, the spring 600, the closing ring 800 and is connected to the short-time high-temperature fusing device in the servo 100. With the tension of the second tension rope 402, the second through-hole screw 502 exerts pressure on the spring 600, causing the spring 600 to be compressed between the closed end of the closing ring 800 and the closed end of the opening ring 700. The second through-hole screw 502 is coaxial with the spring 600, and the spring 600 is in a compressed state along the axial direction, providing an axial outward thrust. The closed end of the opening ring 700 is the installation surface for the assisting driving force.

[0032] The gas rudder 300 includes a rudder surface 301, a rotating shaft 302, and a fixedly connected rocker arm 303; the open-ring 700 is provided with a through hole; the fixedly connected rocker arm 303 is fixedly connected to the multi-link 200, one end of the rotating shaft 302 is connected to the rudder surface 301, and the other end of the rotating shaft 302 passes through the through hole of the open-ring 700 and the semi-circular groove 801 of the closed-ring 800 and is fixedly connected to the fixedly connected rocker arm 303. The servo 100 outputs torque, the multi-link 200 is a torque transmission mechanism, the servo 100 drives the multi-link 200 to drive the gas rudder 300 to rotate, and the closed-ring 800 restricts the radial swing of the open-ring 700 and the gas rudder 300.

[0033] The first tension rope 401 and the second tension rope 402 are high-strength soft thin wires with a very low elongation at break.

[0034] The active separation control method of the rudder mechanism in this embodiment includes:

[0035] 1) Adjust the tension of the tension rope through the through-hole screw, so as to adjust the pre-tightening force applied between the multi-link 200 and the servo 100 and between the open-ring 700 and the closed-ring 800;

[0036] 2) After the servo 100 receives the angle command, it drives the multi-link 200 to rotate, thereby driving the gas rudder 300 to deflect;

[0037] 3) After the gas rudder 300 finishes deflecting, it sends angle information feedback to the servo 100;

[0038] 4) The short-time high-temperature fusing device of the servo 100 fuses the first tension rope 401;

[0039] 5) The pre-tightening force between the multi-link 200 and the servo 100 is released, and the multi-link 200 moves away from the servo 100 along the axis of the first through-hole screw 501;

[0040] 6) The short-time high-temperature fusing device of the servo 100 fuses the second tension rope 402;

[0041] 7) The pre-tightening force between the open-ring 700 and the closed-ring 800 is released, the compression force applied to the spring 600 is removed, the spring 600 elongates, and axially pushes the open-ring 700 to move away from the closed-ring 800;

[0042] 8) The movement of the open-ring 700 drives the gas rudder 300 to move away from the closed-ring 800. When the gas rudder 300 leaves the semi-circular groove 801 of the closed-ring 800, the through-hole screw, the tension rope, the spring, the open-ring, the gas rudder, and the multi-link are separated from the closed-ring 800 (i.e., the constraint is released) together, and the separation is completed.

Claims

1. An active separation device for a rudder mechanism attached to a servo, characterized in that: It includes a servo, a multi-link, a gas rudder, an opening ring, a closing ring, and a number of tension ropes, through-hole screws and springs; The servo is provided with a short-time high-temperature fuse device; The multi-link is connected to the output shaft of the servo; one end of the first tension rope is constrained on the first through-hole screw, and the other end passes through the first through-hole screw and the multi-link to be connected to the short-time high-temperature fuse device in the servo, and the first through-hole screw is used to adjust the tightness of the first tension rope, thereby adjusting the preload force applied between the multi-link and the servo; One end of the closing ring is fixed on the servo; the opening ring is sleeved outside the closing ring, and the opening ring is coaxial with the closing ring; The spring is placed in the opening ring, one end of the spring contacts the closing ring, and the other end contacts the opening ring; one end of the second tension rope is constrained on the second through-hole screw, and the other end passes through the second through-hole screw, the spring, the closing ring and is connected to the short-time high-temperature fuse device in the servo, and the second through-hole screw is used to adjust the tightness of the second tension rope, thereby adjusting the pre-tightening force applied between the opening ring and the closing ring; The gas vane is fixedly connected to the multi-link through the opening ring.

2. The active separation device of the rudder mechanism of the attachment servo according to claim 1, characterized in that: The multi-link is provided with an annular connecting component, the inner surface of the annular connecting component is mechanically matched with the outer surface of the output shaft of the servo, so as to realize the connection between the multi-link and the servo output shaft.

3. The active separation device of the rudder mechanism of the attachment servo according to claim 2, characterized in that: The first through-hole screw is threadedly connected to the annular connecting component; the first tensioning rope passes through the through hole of the first through-hole screw, the annular connecting component, the output shaft of the servo and is connected to the short-time high-temperature fuse device in the servo.

4. The active separation device of the rudder mechanism of the attachment servo according to claim 1, characterized in that: The closing ring is an annular structure whose outer ring surface closes from one end close to the servo to one end away from the servo, and the opening ring is an annular structure whose inner ring surface opens from one end away from the servo to one end close to the servo, and the inner ring surface of the opening ring is mechanically matched with the outer ring surface of the closing ring.

5. The active separation device of the rudder mechanism of the attachment servo according to claim 1, characterized in that: The end of the closing ring close to the servo and the end of the opening ring away from the servo are both closed ends, and the two ends of the spring are in contact with the closed ends of the closing ring and the opening ring respectively; with the help of the tension of the second tensioning rope, the second through-hole screw applies pressure to the spring, so that the spring is compressed between the closed end of the closing ring and the closed end of the opening ring.

6. The active separation device of the rudder mechanism of the attachment servo according to claim 5, characterized in that: The closed end of the opening ring is provided with a threaded hole, and the second through-hole screw is rotated from the outside of the opening ring through the threaded hole of the closed end of the opening ring and then inserted into the spring.

7. The active separation device of the rudder mechanism of the attachment servo according to claim 1, characterized in that: A semicircular groove is provided at the end of the closing ring away from the servo; a through hole is provided on the opening ring; the gas rudder comprises a rudder surface, a rotating shaft and a fixed rocker arm; the fixed rocker arm is fixedly connected to the multi-link; one end of the rotating shaft is connected to the rudder surface, and the other end passes through the through hole of the opening ring, the semicircular groove of the closing ring and is fixedly connected to the fixed rocker arm.

8. The active separation device of the rudder mechanism of the attachment servo according to claim 1, characterized in that: The tension rope is a high-strength soft thin wire with a small elongation at break.

9. A method for controlling active separation of a rudder mechanism, characterized in that: The method is implemented using the active separation device of the rudder mechanism of the attached servo according to any one of claims 1 to 8, and the method comprises: 1) The first through-hole screw is used to adjust the tightness of the first tension rope, thereby adjusting the preload force applied between the multi-link and the servo; the second through-hole screw is used to adjust the tightness of the second tension rope, thereby adjusting the preload force applied between the opening ring and the closing ring; 2) After receiving the angle command, the servo drives the multi-link to rotate, thereby driving the gas rudder to deflect; 3) After the gas rudder is deflected, the angle information is sent back to the servo; 4) The short-time high-temperature fuse of the servo fuses the first tensioning rope; 5) The preload force between the multi-link and the servo is released, and the multi-link moves away from the servo along the axis of the first through-hole screw; 6) The short-time high-temperature fuse of the servo fuses the second tension rope; 7) The preload between the opening ring and the closing ring is released, the compression force applied to the spring is removed, the spring stretches, and the opening ring is axially pushed away from the closing ring; 8) The movement of the opening ring drives the gas rudder to move away from the closing ring, thereby realizing active separation of the gas rudder.

10. The method for active separation control of a steering mechanism according to claim 9, characterized in that: The gas rudder moves in the direction away from the closing ring. When the gas rudder leaves the semicircular groove of the closing ring, the through-hole screw, the tension rope, the spring, the opening ring, the gas rudder and the multi-link are separated from the closing ring together to complete the separation.

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