Head body flexible connection swing mechanism

Abstract

The present application relates to a kind of head body flexible connection swing mechanism, belong to the field of morphing aircraft;Including shell section, warhead shell section, bellows, n warhead deflection driving device and control box;Bellows is coaxially arranged at the top of shell section;Warhead shell section is coaxially arranged at the top of bellows;N warhead deflection driving device is evenly distributed at the outer wall of bellows along the circumference;The top end of warhead deflection driving device is connected with the bottom of warhead shell section;The bottom end of warhead deflection driving device is connected with the top of shell section;Control box is installed on shell section, and control box realizes the electric control of n warhead deflection driving device;The different elongation of n warhead deflection driving device is controlled by control box, and the swing of warhead shell section relative to shell section is realized;N warhead deflection driving device of the present application is evenly distributed in the inside of missile shell, does not occupy middle space, and mechanism quantity can be adjusted according to bearing requirement, and bearing capacity is strong, and shell circumferential rigidity change is controllable.

Description

Technical Field

[0001] This invention belongs to the field of deformable aircraft and relates to a flexible head-body connection swing mechanism. Background Technology

[0002] Deflection warhead control is an effective way to achieve missile aerodynamic control. By using a swing mechanism connecting the warhead and the missile body to drive the warhead to deflect at a certain angle relative to the missile body axis, the aerodynamic load on the missile can be changed, thereby achieving yaw and pitch control. However, traditional swing mechanisms have weak load-bearing capacity and occupy a large space, and are mostly suitable for small and medium-sized missiles.

[0003] A search of existing technologies revealed Chinese invention patent publication number CN105318794, which discloses a deflecting warhead. A swinging cone is connected to the warhead shell via a spherical joint. A square shaft is fixed to the bottom of the swinging cone. An eccentric shear load is applied to the cantilever end of the square shaft using a motor drive and a lead screw transmission, thereby driving the swinging cone to rotate. Two mechanisms are arranged inside the warhead to control the rotational degree of freedom in one direction. However, the above patent has the following shortcomings: the spherical joint requires high machining precision; the aerodynamic shape between the swinging cone and the warhead shell is discontinuous, affecting the missile's aerodynamic performance; the square shaft adopts a cantilever beam form to bear the eccentric load, requiring high stiffness.

[0004] A search of existing technologies revealed Chinese invention patent publication number CN104229145, which discloses a screw-push rod type aircraft nose deflection drive device. The aircraft nose is connected to the base via a spherical sleeve, and the nose shell is connected via a corrugated shell. The nose is deflected by a push rod driven by a motor and a screw-screw transmission. A total of four drive devices are arranged. However, the above patent has the following shortcomings: the spherical sleeve requires high machining precision; the device occupies a large area of ​​the nose body connection surface and internal missile space, making it suitable only for small and medium-sized missiles.

[0005] A search of existing technologies revealed Chinese invention patent publication number CN104192311, which discloses a bevel gear push rod type aircraft head deflection drive device. It employs a motor drive and bevel gear pairs and rack and pinion pairs to drive the head deflection via a push rod. Two drive motors are arranged along the projectile axis, each controlling deflection in one direction. However, this patent has the following shortcomings: the spherical sleeve requires high machining precision; the device occupies a large area of ​​the head-body connection surface and the projectile's internal space; and the transmission structure is complex.

[0006] A search of existing technologies revealed Chinese invention patent publication number CN111678386, which discloses a nose deflection control device for an aircraft. The aircraft nose is connected to a tilting bracket and a spherical rotor, with the outer shell connected by a bellows. The nose is deflected via a telescopic slider driven by a motor and a lead screw transmission. The telescopic slider and the bracket are self-locked by a ratchet mechanism. A total of four drive units are arranged. However, this patent has the following shortcomings: the spherical rotor requires high machining precision; the device occupies the head-body connection surface; and the circumferential stiffness of the shell is discontinuous. Summary of the Invention

[0007] The technical problem solved by this invention is to overcome the shortcomings of the prior art and propose a flexible connection swing mechanism for the head and body, which is evenly distributed circumferentially inside the missile shell, does not occupy the central space, and the number of mechanisms can be adjusted according to the load requirements. It has strong load-bearing capacity and the circumferential stiffness of the shell can be controlled.

[0008] The solution of the present invention is:

[0009] A flexible ballistic swing mechanism includes a projectile body segment, a projectile head segment, a bellows, n projectile deflection drive devices, and a control box. The projectile body segment is a vertically oriented main structure. The bellows is coaxially mounted on the top of the projectile body segment. The projectile head segment has a conical structure and is coaxially mounted on the top of the bellows, with its large-diameter end connected to the bellows. The n projectile deflection drive devices are evenly distributed circumferentially on the outer wall of the bellows. The top of each projectile deflection drive device is connected to the bottom of the projectile head segment, and the bottom of each device is connected to the top of the projectile body segment. The control box is mounted on the projectile body segment and provides electric control over the n projectile deflection drive devices. By controlling the different extensions of the n projectile deflection drive devices, the control box enables the projectile head segment to swing relative to the projectile body segment.

[0010] In the aforementioned flexible connection swing mechanism for the head body, the projectile deflection drive device includes a base, cable, electrical connector, motor, reducer, coupling, lead screw, lead screw seat, nut, sleeve, guide block, displacement sensor, universal joint, and push rod.

[0011] The base is mounted on the projectile shell section at its bottom. An electrical connector is located at the bottom of the base, converging the motor power supply lines and displacement sensor signal lines, and connecting them to the control box via a cable from the opening at the bottom of the base. The motor and reducer are installed inside the base. The reducer output shaft is connected to a lead screw via a coupling, driving the lead screw to rotate. A lead screw holder is mounted on the upper end of the base, transferring the axial load borne by the lead screw to the base. The lead screw holder and lead screw are fitted with bearings or bushings. The lead screw has external threads, and the nut has internal threads. The lead screw and nut work together to form a helical drive; the nut is connected to the sleeve via a flange; the sleeve is fitted onto the outside of the base, and the side wall of the sleeve is machined with an elongated through hole; the guide block passes through the elongated through hole in the side wall of the sleeve and is screwed onto both sides of the base; the displacement sensor is installed on the outer wall of the sleeve, aligned with the guide block, and obtains the displacement of the sleeve by measuring the distance from the guide block; the upper end of the sleeve is connected to the universal joint via a flange, and the other end of the universal joint is connected to the push rod via a flange; the push rod is connected to the projectile housing section via a flange.

[0012] In the aforementioned flexible connection swing mechanism for the head body, when the head deflection drive device is subjected to axial load, the screw and nut helical transmission achieve self-locking; n is a positive integer not less than 4.

[0013] In the aforementioned flexible connection swing mechanism for the head body, the width of the guide block is the same as the width of the elongated through hole on the side wall of the sleeve, thereby limiting the rotational movement of the nut and the sleeve, that is, enabling the screw to rotate and drive the nut and the sleeve to move axially.

[0014] In the aforementioned flexible connection swing mechanism for the head body, the length of the elongated through hole on the side wall of the sleeve is consistent with the designed axial stroke of the nut, and cooperates with the guide block to play a mechanical limiting role in axial movement, preventing the nut from moving axially beyond the designed stroke; the elongated through hole on the side wall of the sleeve and the moving mating surface of the guide block are coated with a friction-reducing coating.

[0015] In the aforementioned flexible connection swing mechanism for the head body, when the lead screw rotates to drive the nut and sleeve to move axially, the sleeve generates a shear force on the guide block, which fixes the guide block on the base, effectively shortening the shear force arm and reducing the bending moment on the guide block. The high torsional stiffness base bears the torque.

[0016] In the aforementioned flexible connection swing mechanism for the head body, a first mounting ring surface is provided at the outer edge of the upper surface of the projectile shell section; the base is mounted on the first mounting ring surface via a flange; a second mounting ring surface is provided at the outer edge of the lower surface of the projectile shell section, and the top of the mechanism push rod is mounted on the second mounting ring surface via a flange.

[0017] In the aforementioned flexible head-body connection swing mechanism, the warhead shell section maintains a continuous aerodynamic shape through a bellows when swinging relative to the projectile body shell section.

[0018] In the aforementioned flexible head-body connection swing mechanism, the control box is installed on the first mounting ring surface; and the first mounting ring surface is provided with a through hole corresponding to the base position, through which the cable passes and connects to the control box along the first mounting ring surface; a cable clamp is provided at a corresponding position on the first mounting ring surface to fix the cable.

[0019] In the aforementioned flexible head-body connection swing mechanism, the working process of the swing mechanism is as follows:

[0020] Adjust the nut to the middle position of the stroke to make the initial height of each mechanism consistent; install the base and push rod onto the projectile shell section mounting ring and the projectile shell section mounting ring respectively. At this time, the projectile axis coincides with the projectile axis and is in an undeflected state.

[0021] During flight, when no warhead deflection command is issued, the screw and nut screw drive is self-locking, the motor does not need to be powered, and the mechanism maintains a low power consumption state.

[0022] When a command to deflect the projectile casing section to the right is issued, the control box controls each motor to power on and rotate. The left motor drives the nut and sleeve to move axially upward through a lead screw drive. The right motor drives the nut and sleeve to move axially downward through a lead screw drive. The projectile casing section completes the rightward deflection under the force of the projectile deflection drive devices on both sides. Each push rod swings with the projectile, and the universal joint provides the degree of freedom of swing. During the deflection process, the bellows is compressed on one side and stretched on the other side, always maintaining the connection with the projectile casing section and the projectile casing section.

[0023] The advantages of this invention compared to the prior art are:

[0024] (1) The warhead deflection drive device of the present invention is circumferentially distributed on the inner side of the missile casing, does not occupy the central space, and is suitable for large missiles;

[0025] (2) The warhead deflection drive device of the present invention adopts a modular design, and the number of mechanisms can be adjusted according to the load requirements. It has strong load-bearing capacity and the change of circumferential stiffness of the shell is controllable.

[0026] (3) The present invention uses a universal joint connection to provide the warhead deflection degree of freedom, which is less difficult to process, has low manufacturing cost, and high reliability;

[0027] (4) The warhead deflection drive device of the present invention uses a motor drive and a screw nut to achieve telescopic movement and self-locking. It uses a set of control modules to realize the coordinated operation of multiple mechanisms, ensuring the accuracy of warhead attitude control. At the same time, it can reduce the driving energy requirements of a single mechanism and facilitate the design of motor selection, heat dissipation, power supply, etc. Attached Figure Description

[0028] Figure 1 This is a schematic diagram of the overall flexible connection swing mechanism of the head body of the present invention;

[0029] Figure 2 This is a schematic diagram of the warhead deflection drive device of the present invention;

[0030] Figure 3 This is a schematic diagram of the undeflected state of the projectile of the present invention;

[0031] Figure 4 This is a schematic diagram of the deflection state of the warhead of the present invention. Detailed Implementation

[0032] The present invention will be further described below with reference to the embodiments.

[0033] This invention provides a flexible warhead-body connection swing mechanism. In this invention, n warhead deflection drive devices are circumferentially distributed inside the missile casing, without occupying central space, making it suitable for large missiles. It adopts a modular design, allowing the number of mechanisms to be adjusted according to load requirements, resulting in strong load-bearing capacity and controllable changes in the circumferential stiffness of the casing. Universal joint connections provide warhead deflection freedom, reducing processing difficulty, manufacturing cost, and reliability. The mechanism uses a motor drive and a lead screw and nut to achieve telescopic movement and self-locking. A single control module enables the coordinated operation of multiple mechanisms, ensuring warhead attitude control accuracy while reducing the drive energy requirements of individual mechanisms and facilitating the design of motor selection, heat dissipation, and power supply.

[0034] The head-body flexible connection swing mechanism, such as Figure 1 As shown, the system specifically includes a projectile body section 15, a projectile shell section 17, a bellows 16, n projectile deflection drive devices, and a control box 18. The projectile body section 15 is a vertically oriented main structure. The bellows 16 is coaxially mounted on top of the projectile body section 15. The projectile shell section 17 is a conical structure. The projectile shell section 17 is coaxially mounted on top of the bellows 16, and the large-diameter end of the projectile shell section 17 is connected to the bellows 16. The n projectile deflection drive devices are evenly distributed circumferentially on the bellows. At the outer wall of tube 16; the top of the projectile deflection drive device is connected to the bottom of the projectile shell section 17; the bottom of the projectile deflection drive device is connected to the top of the projectile shell section 15; the control box 18 is installed on the projectile shell section 15, and the control box 18 realizes the electric control of n projectile deflection drive devices; by controlling the different extensions of the n projectile deflection drive devices through the control box 18, the projectile shell section 17 is oscillating relative to the projectile shell section 15; n is a positive integer not less than 4.

[0035] This invention provides a refined design for the warhead deflection drive device, such as... Figure 2 As shown, the warhead deflection drive device mainly includes: base 1, cable 2, electrical connector 3, motor 4, reducer 5, coupling 6, lead screw 7, lead screw seat 8, nut 9, sleeve 10, guide block 11, displacement sensor 12, cross shaft universal joint 13, and push rod 14.

[0036] The base 1 of the warhead deflection drive device is mounted on the missile body via a flange. An electrical connector 3 is located at the bottom of the base 1, converging the power supply lines of the mechanism motor 4 and signal lines from components such as the motor encoder and displacement sensor 12, and connecting them to the control module via cable 2 through an opening at the lower end of the base 1. The motor 4 and reducer 5 are installed inside the base 1, providing good installation conditions and a mechanically protected environment for the motor. The output shaft of the reducer 5 is connected to the lead screw 7 via a coupling 6, driving the lead screw 7 to rotate. The lead screw seat 8 is mounted on the upper end of the base 1, transmitting the axial load borne by the lead screw 7 to the base 1. Depending on the axial load and structural dimensional constraints, the fit between the lead screw seat 8 and the lead screw 7 can be designed using bearings or bushings to reduce contact friction, improve transmission efficiency, and lower drive power requirements.

[0037] The lead screw 7 has an external thread, and the nut 9 has an internal thread; together, they form a helical drive. Depending on the nut's speed requirements, the helical drive can use either a trapezoidal thread or a standard thread, achieving a balance between technical specifications and manufacturing costs. When the mechanism is subjected to axial load applied by the projectile, the helical drive can achieve self-locking, eliminating the need for a motor to provide locking torque, resulting in high reliability of projectile attitude locking. The nut 9 is connected to the sleeve 10 via a flange.

[0038] The sleeve 10 is fitted onto the outside of the base 1, and its side wall is machined with an elongated through hole. The guide block 8 passes through the elongated through hole in the side wall of the sleeve 10 and is screwed onto both sides of the base 1. Its width is the same as the through hole, thus limiting the rotational movement of the nut 9 and the sleeve 10, allowing the lead screw 7 to rotate and drive the nut 9 and sleeve 10 to move axially. The length of the elongated through hole in the side wall of the sleeve 10 is consistent with the designed axial stroke of the nut 9. In conjunction with the guide block 11, it simultaneously serves as a mechanical limiter for axial movement, preventing the nut 9 from exceeding its designed stroke.

[0039] When the lead screw 7 rotates to drive the nut 9 and sleeve 10 to move axially, the sleeve 10 will exert a shear force on the guide block 11. Fixing the guide block 11 to the base 1 can effectively shorten the shear force arm and reduce the bending moment on the guide block 11, allowing the high torsional stiffness of the base 1 to bear the torque. The elongated through hole on the side wall of the sleeve 10 and the moving mating surface of the guide block 11 are coated with an anti-friction coating to reduce sliding friction and lower the drive power requirements. The displacement sensor 12 is installed on the outer wall of the sleeve 10, aligned with the guide block 11, and obtains the displacement of the sleeve 10 by measuring the distance to the guide block 11.

[0040] The upper end of the sleeve 10 is connected to the universal joint 13 via a flange, and the other end of the universal joint 13 is connected to the push rod 14 via a flange. Compared with a ball joint, the universal joint 13 can achieve the same degree of freedom of the push rod 14, with lower machining accuracy requirements, lower manufacturing cost, and higher reliability. The push rod 14 is connected to the missile warhead via a flange.

[0041] Figure 1 This paper demonstrates a possible installation configuration of a flexible warhead-body connection swing mechanism on a missile. The drive system comprises four warhead deflection actuators, evenly distributed circumferentially near the inner wall of the missile casing, thus not occupying space in the missile's central area and minimizing impact on other subsystems and functions. A mechanism mounting ring 15-1 is designed within the missile body section 15, and the mechanism base 1 is mounted on this ring via a flange. A similar mechanism mounting ring 17-1 is designed within the warhead casing section 17, and the mechanism push rod 14 is mounted on it via a flange. The missile body section 15 and warhead casing section 17 are connected by a bellows 16, maintaining a continuous aerodynamic shape during warhead deflection and ensuring good aerodynamic control. The control module for the warhead deflection actuator is integrated into a control box 18, which is also mounted on the missile body section mounting ring 15-1, reducing internal space occupation and achieving high structural load-bearing efficiency. A through hole is designed on the mounting ring 15-1 of the projectile shell section, corresponding to the position of the base 1. The cable 2 can pass through the through hole and connect to the control box 18 along the mounting ring 15-1 of the projectile shell section. Cable clamps 2-1 can also be installed on the mounting ring 15-1 of the projectile shell section to facilitate the fixing of the cable 2.

[0042] Figure 3 and Figure 4 This diagram illustrates the warhead in both its undeflected and deflected states. The working principle of the connecting swing mechanism is as follows: Nut 9 is adjusted to the middle position of its stroke, ensuring that the initial heights of all mechanisms are consistent. Base 1 and push rod 14 are respectively installed onto the warhead shell section mounting ring 15-1 and the warhead shell section mounting ring 17-1. At this time, the warhead axis coincides with the warhead axis, indicating the undeflected state. During flight, when the control system does not issue a warhead deflection command, the screw 7 and nut 9 of the mechanism are self-locking, the motor 4 does not need to be energized, and the mechanism maintains a low-power state. When the control system issues a warhead deflection command to the right, as... Figure 4 As shown, the control box 18 receives commands and controls the motors 4 of each mechanism to rotate. The left-side mechanism motor 4 drives the nut 9 and sleeve 10 to move axially upwards via a lead screw 7, while the right-side mechanism motor 4 drives the nut 9 and sleeve 10 to move axially downwards via the same lead screw 7. Under the force of the mechanisms on both sides, the projectile deflects to the right. The push rods 14 of each mechanism swing with the projectile, with the universal joint 13 providing the degree of freedom for the swing. During the deflection process, the bellows 16 is compressed on one side and stretched on the other, maintaining its connection with the projectile shell section 15 and the projectile shell section 17. The driving principle is similar when the projectile deflects in other directions.

[0043] Multiple warhead deflection drive devices are controlled by a single control box 18. The control board receives commands from the missile control system, controls the motors 4 of each mechanism via the drive board, and achieves closed-loop control through feedback from motor encoders, displacement sensors 12, etc. The warhead deflection motion is driven by multiple motors in a coordinated manner, which can ensure the accuracy of warhead attitude control, improve response speed, and at the same time reduce the power requirements of individual motors, facilitating motor selection, heat dissipation, and other design aspects.

[0044] Although the present invention has been disclosed above with reference to preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art can make possible changes and modifications to the technical solutions of the present invention by utilizing the methods and techniques disclosed above without departing from the spirit and scope of the present invention. Therefore, any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solutions of the present invention shall fall within the protection scope of the technical solutions of the present invention.

Claims

1. A flexible head-body connection swing mechanism, characterized in that: The system includes a projectile body section (15), a projectile body section (17), a bellows (16), n projectile deflection drive devices, and a control box (18). The projectile body section (15) is a vertically oriented main structure. The bellows (16) is coaxially positioned at the top of the projectile body section (15). The projectile body section (17) is a conical structure. The projectile body section (17) is coaxially positioned at the top of the bellows (16), and the large-diameter end of the projectile body section (17) is connected to the bellows (16). The n projectile deflection drive devices are arranged circumferentially. The projectiles are evenly distributed on the outer wall of the bellows (16); the top of the projectile deflection drive device is connected to the bottom of the projectile shell section (17); the bottom of the projectile deflection drive device is connected to the top of the projectile shell section (15); the control box (18) is installed on the projectile shell section (15), and the control box (18) realizes the electric control of the n projectile deflection drive devices; by controlling the different extensions of the n projectile deflection drive devices through the control box (18), the projectile shell section (17) swings relative to the projectile shell section (15). The warhead deflection drive device includes a base (1), a cable (2), an electrical connector (3), a motor (4), a reducer (5), a coupling (6), a lead screw (7), a lead screw seat (8), a nut (9), a sleeve (10), a guide block (11), a displacement sensor (12), a cross shaft universal joint (13), and a push rod (14). The base (1) is mounted on the shell section (15) at its bottom end; the electrical connector (3) is designed at the bottom of the base (1) to combine the power supply line of the motor (4) and the signal line of the displacement sensor (12), and connects to the control box (18) through the cable (2) from the opening at the bottom of the base (1); the motor (4) and the reducer (5) are installed inside the base (1); the output shaft of the reducer (5) is connected to the lead screw (7) through the coupling (6) to drive the lead screw (7) to rotate; the lead screw seat (8) is installed at the top of the base (1) to transfer the axial load borne by the lead screw (7) to the base (1); the lead screw seat (8) and the lead screw (7) are fitted with bearings or bushings; the lead screw (7) is designed with external threads, and the nut (9) is designed with internal threads. (7) It forms a helical drive with the nut (9); the nut (9) is connected to the sleeve (10) through the flange; the sleeve (10) is sleeved on the outside of the base (1), and the side wall of the sleeve (10) is machined with an elongated through hole; the guide block (11) passes through the elongated through hole on the side wall of the sleeve (10) and is screwed to both sides of the base (1); the displacement sensor (12) is installed on the outer wall of the sleeve (10) and aligned with the guide block (11), and the displacement of the sleeve (10) is obtained by measuring the distance to the guide block (11); the upper end of the sleeve (10) is connected to the universal joint (13) through the flange, and the other end of the universal joint (13) is connected to the push rod (14) through the flange; the push rod (14) is connected to the projectile shell section (17) through the flange; When the warhead deflection drive device is subjected to axial load, the screw (7) and nut (9) achieve self-locking through helical transmission; n is a positive integer not less than 4; The width of the guide block (11) is the same as the width of the elongated through hole on the side wall of the sleeve (10), thereby limiting the rotational movement of the nut (9) and the sleeve (10), that is, enabling the screw (7) to rotate and drive the nut (9) and the sleeve (10) to move axially. The length of the elongated through hole on the side wall of the sleeve (10) is consistent with the designed axial stroke of the nut (9), and it cooperates with the guide block (11) to play a mechanical limiting role in axial movement, so as to prevent the nut (9) from moving beyond the designed stroke in the axial direction; the elongated through hole on the side wall of the sleeve (10) and the moving mating surface of the guide block (11) are coated with a friction-reducing coating. When the lead screw (7) rotates and drives the nut (9) and sleeve (10) to move axially, the sleeve (10) generates a shear force on the guide block (11), which fixes the guide block (11) on the base (1) to effectively shorten the shear force arm, weaken the bending moment on the guide block (11), and the high torsional stiffness base (1) bears the torque.

2. The head-body flexible connection swing mechanism according to claim 1, characterized in that: The upper surface of the projectile shell section (15) is provided with a first mounting ring surface (15-1); the base (1) is mounted on the first mounting ring surface (15-1) through a flange; the lower surface of the projectile shell section (17) is provided with a second mounting ring surface (17-1), and the top of the mechanism push rod (14) is mounted on the second mounting ring surface (17-1) through a flange.

3. The head-body flexible connection swing mechanism according to claim 1, characterized in that: When the warhead shell section (17) swings relative to the projectile body shell section (15), it maintains a continuous aerodynamic shape through the bellows (16).

4. The head-body flexible connection swing mechanism according to claim 2, characterized in that: The control box (18) is installed on the first mounting ring surface (15-1); and the first mounting ring surface (15-1) is provided with a through hole at the position corresponding to the base (1), through which the cable (2) passes and connects to the control box (18) along the first mounting ring surface (15-1); a cable clamp (2-1) is provided at the corresponding position on the first mounting ring surface (15-1), and the cable (2) is fixed by the cable clamp (2-1).

5. The head-body flexible connection swing mechanism according to claim 1, characterized in that: The working process of the swing mechanism is as follows: Adjust the nut (9) to the middle position of the stroke so that the initial height of each mechanism is consistent; install the base (1) and push rod (14) onto the first mounting ring surface (15-1) of the projectile shell section and the second mounting ring surface (17-1) of the projectile shell section respectively. At this time, the projectile axis coincides with the projectile axis and is in an undeflected state. During flight, when no warhead deflection command is issued, the screw (7) and nut (9) are self-locked, the motor (4) does not need to be powered, and the mechanism maintains a low power consumption state. When the command to deflect the projectile shell section (17) to the right is issued, the control box (18) controls each motor (4) to be powered on and rotated; the left motor (4) drives the nut (9) and sleeve (10) to move upward along the axis through the screw (7); the right motor (4) drives the nut (9) and sleeve (10) to move downward along the axis through the screw (7); the projectile shell section (17) completes the deflection to the right under the force of the projectile deflection drive device on both sides; each push rod (14) swings with the projectile, and the universal joint (13) provides the swing freedom; during the deflection process, the bellows (16) is compressed on one side and stretched on the other side, and always maintains the connection with the projectile shell section (15) and the projectile shell section (17).

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