Rotary table type smoke bomb protection system

Abstract

The invention belongs to the technical field of smoke bomb protection, and relates to a rotary table type smoke bomb protection system. A rotary table type smoke bomb protection system comprises a 50 mm smoke bomb launching device, a main support, a horizontal transmission structure, a pitching transmission structure, a seat ring inner ring, a seat ring outer ring, an electric screw, a trunnion assembly and an integrated servo motor. The bottom of the main support is fixedly connected with a vehicle body or a platform through a shock pad. A main support bottom plate center sinking circular truncated cone is used for positioning a seat ring outer ring. Bearing holes are formed in the upper ends of the vertical arms on the two sides and used for supporting trunnion assemblies; the outer ring of the seat ring is locked in the center of the main bracket bottom plate; the seat ring inner ring is nested in the seat ring outer ring through a single-row four-point contact ball bearing; the launching device is provided with 16 50 mm smoke bomb launching barrels which do pitching motion along with the trunnion assembly. 360-degree horizontal rotation can be achieved, fast 0-90-degree steering can be achieved, smoke screen projection in any direction is achieved, a shielding barrier surrounding the armored vehicle is formed, and the battlefield survival rate is remarkably increased.

Description

Technical Field

[0001] This invention belongs to the field of smoke grenade protection technology and relates to a turntable-type smoke grenade protection system. Background Technology

[0002] Active protection systems are an important component of armored vehicles. An active protection system refers to a collective term for components such as radar, infrared detection, turntables, smoke grenades, and fragmentation interceptor munitions. It mainly consists of three parts: a radar detection system, a launching device, and a munition carrier. Its function is to detect the trajectory of incoming munitions with radar, triggering the launch of smoke grenades to form a "soft-kill" barrier or triggering the launch of fragmentation interceptor munitions to form a "hard-kill" barrier, ultimately achieving vehicle protection.

[0003] Most active armored vehicles use fixed smoke grenade launchers, which have the following technical drawbacks: limited coverage area, requiring vehicles to constantly change angles to achieve omnidirectional protection; lack of mobility, unable to quickly respond to threats from different directions; most use cold smoke grenades, lacking multi-spectral shielding capabilities; slow reaction speed; and inability to effectively deal with top-attack threats.

[0004] Therefore, there is an urgent need for a smoke grenade protection system with omnidirectional and rapid response. Summary of the Invention

[0005] To address the aforementioned technical issues, this invention proposes a turntable-type smoke grenade protection system, applied to a certain type of unmanned vehicle. When the vehicle is in motion, the turntable-type smoke grenade protection system will quickly and automatically respond based on the threat information collected by the infrared detector. By adjusting the launch direction through the turntable, it will launch four 50mm smoke grenades in a continuous burst mode, achieving shielding protection for the top area of ​​the vehicle or an 80° horizontal fan-shaped area. It can continue to actively launch to increase the shielding range.

[0006] The technical solution adopted in this invention is as follows: A rotary table type smoke grenade protection system includes a 50mm smoke grenade launching device, a main support, a horizontal transmission structure, a pitch transmission structure, an inner ring of the seat ring, an outer ring of the seat ring, a sealing cover, an electric spinner, a trunnion assembly, and an integrated servo motor; the integrated servo motor is divided into a horizontal integrated servo motor and a pitch integrated servo motor; The bottom of the main support is fixed to the vehicle body or platform through a shock-absorbing pad. The central recessed truncated cone of the main support base plate is used for positioning the outer ring of the seat ring. Bearing holes are opened at the upper ends of the two side arms to support the trunnion assembly. The outer ring of the seat ring is locked in the center of the main support base plate and remains stationary. The inner ring of the seat ring is nested inside the outer ring of the seat ring through a single row of four-point contact ball bearings and can rotate 360°. The 50mm smoke grenade launcher has a total of 16 50mm smoke grenade launch tubes. The back plate is fixed to the trunnion flange and moves in pitch along with the trunnion assembly. The launch tubes are welded to the front of the back plate in a 4×4 square array. The electric firing sockets at the tail of the launch tubes are connected to the electric rotor end through a wiring harness. The lower end of the back plate is equipped with a sliding pad, which is supported on the upper surface of the inner ring of the base ring. The bottom row of launch tube bases is connected to the main support through a copper braided strap to ensure reliable grounding of the launch circuit. The bottom flange of the housing of the horizontal transmission mechanism is bolted to the side lug of the outer ring of the seat ring, which is used to drive the inner ring of the seat ring to rotate. The bottom flange of the pitch transmission mechanism housing is bolted to the upper surface of the inner ring of the seat ring, and rotates horizontally together with the inner ring of the seat ring to drive the pitch of the 50mm smoke grenade launcher. The two ends of the trunnion are mounted in the bearing housing of the pitch transmission mechanism via bearings; The stator end of the electric rotary rotor is concentrically locked to the outer ring of the mounting ring and remains stationary; the rotor end of the electric rotary rotor is concentrically locked to the inner ring of the mounting ring and rotates with the inner ring of the mounting ring; the stator side wiring harness is led out through the hole in the base plate of the main bracket to the vehicle power supply / controller; the rotor side wiring harness passes sequentially through the center hole of the inner ring of the mounting ring, the pitch transmission structure housing, the hollow shaft hole of the trunnion, and the tail of the launching device, so as to achieve uninterrupted power supply, ignition and signal during continuous n×360° rotation; The pitch integrated servo motor flange is fixed to the side wall of the pitch transmission mechanism housing; the horizontal integrated servo motor flange is fixed to the side wall of the horizontal transmission mechanism housing.

[0007] Furthermore, the 50mm smoke grenade launcher has two firing modes: single-shot mode and 4-shot burst mode. In single-shot mode, smoke grenades of any designation can be fired, achieving unidirectional 19° smoke shielding within 3 seconds. Subsequently, the single rank containing this smoke grenade can only fire one shot at a time, not four shots at a time, until reloading. In the 4-round burst mode, the entire row is fired. After the system detects that this row is a row of smoke grenades, one grenades are fired every 16° in the horizontal direction of the turntable, achieving 80° smoke shielding of the vehicle within 3 seconds.

[0008] Furthermore, the horizontal transmission mechanism includes a housing, a motor, a motor gear, shaft a, a worm gear, a worm, shaft b, gear 1, gear 2, an angle sensor, and a seat ring gear; The bottom flange of the housing of the horizontal transmission mechanism is bolted to the outer ring side lug of the seat ring and remains stationary; Output gear 2 meshes with the large gear ring of the inner ring of the seat ring; The horizontally integrated servo motor flange is fixed to the side wall of the housing; Transmission chain: The motor gear and the motor output shaft are connected by a spline. The motor gear meshes with gear 1 to form the first stage of reduction. Gear 1 transmits torque to the worm through shaft a, and the worm meshes with the worm wheel to form the second stage of reduction. The worm wheel transmits torque to gear 2 through shaft b, and gear 2 meshes with the seat ring gear to form the third stage of reduction. This drives all rotating parts above the inner ring to rotate synchronously horizontally. An angle sensor is coaxially mounted on shaft b to monitor the rotation angle of the load in real time, provide feedback on the inner ring rotation angle, and send the information back to the information processing module.

[0009] Furthermore, the selection of the worm gear in the horizontal transmission mechanism can achieve a self-locking structure.

[0010] Furthermore, the pitch transmission mechanism includes a housing, a motor, a motor gear, shaft a, a worm gear, a worm, shaft b, gear 1, gear 2, an angle sensor, a trunnion, and a tooth arc; The bottom flange of the pitch transmission mechanism housing is bolted to the upper surface of the inner ring of the seat ring, and rotates horizontally together with the inner ring of the seat ring. The toothed arc is machined on the outer circle of the trunnion, serving as the final driven component; The pitch-integrated servo motor flange is fixed to the side wall of the housing; The motor gear and the motor output shaft are connected by a spline. The motor gear meshes with gear 1 to form the first stage of reduction. Gear 1 transmits torque to the worm gear through shaft a, and the worm gear meshes with the worm wheel to form the second stage of reduction. The worm wheel transmits torque to gear 2 through shaft b, and gear 2 meshes with the tooth arc to form the third stage of reduction. This drives the trunnion and the launching device to pitch. An angle sensor is coaxially mounted on the worm wheel shaft b to monitor the angle of the load rotation in real time, provide feedback on the pitch angle, and send the information back to the information processing module.

[0011] Furthermore, the worm gear pair of the pitch transmission mechanism ensures that the launching device will not reverse pitch under recoil after power failure.

[0012] Furthermore, the inner and outer rings of the seat ring adopt a single-row four-point contact ball rotation support.

[0013] Furthermore, the pitch-integrated servo motor is selected with a rated power of ≥400W and a motor speed of ≥6000r / min.

[0014] Furthermore, the horizontal integrated servo motor should be selected with a rated power of ≥500W and a motor speed of ≥6000r / min.

[0015] Furthermore, the turntable has a horizontal steering range of n×360° and a pitch steering range of 0-90°, with an overall response time of ≤3s.

[0016] The beneficial effects of this invention are: 1. To address the need for omnidirectional protection against multi-directional threats. Traditional fixed smoke grenade launchers (such as those on the sides of tanks) have limited coverage and are ill-suited to defend against precision strikes from drones, anti-tank missiles, and other threats from multiple angles and directions in modern warfare. The rotary launcher design, with its 360° rotating platform, can rapidly project smoke in any direction, forming a protective barrier around armored vehicles and significantly improving battlefield survivability.

[0017] 2. Enhance rapid response and automation. Traditional smoke grenades rely on manual judgment and deployment, resulting in a slow reaction time. The rotary smoke grenade protection system, through threat detection devices such as radar and photoelectric sensors, can sense the direction of incoming threats in real time, automatically triggering the rotary table to rotate and fire smoke grenades in bursts, forming a protective barrier within seconds, significantly shortening the "detection-response" time.

[0018] 3. Flexibility in adapting to complex tactical scenarios. The turntable design allows for modular expansion of the smoke grenade launcher, enabling it to be equipped with fragmentation interceptor munitions, thermite composite smoke munitions, or integrated anti-drone munitions, electromagnetic interference munitions, etc., allowing it to perform multiple tasks such as countering drones and jamming communication nodes while protecting armored vehicles, thus improving tactical adaptability. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of a rotary table smoke grenade protection system; Figure 2 This is a structural diagram of a 50mm smoke grenade launching device; Figure 3 This is a simplified diagram of a horizontal transmission mechanism; Figure 4 This is a detailed structural diagram of the horizontal transmission mechanism; Figure 5 This is a simplified diagram of the pitch transmission mechanism; Figure 6 This is a detailed structural diagram of the pitch transmission mechanism; Figure 7 This is a schematic diagram of a slewing bearing structure; Figure 8 This is a static strength analysis diagram of the trunnion under 12° launch conditions; Figure 9 This is a static strength analysis diagram of the trunnion under 90° launch conditions; Figure 10 This is the finite element method verification diagram for the strength of the support. Detailed Implementation

[0020] like Figure 1 As shown, the rotary table smoke grenade protection system mainly consists of a 50mm smoke grenade launching device, a main support, a horizontal transmission structure, a pitch transmission structure, an inner ring of the seat ring, an outer ring of the seat ring, a sealing cover, an electric spinner, a trunnion assembly, and an integrated servo motor.

[0021] The main support base is fixed to the vehicle body or platform via shock-absorbing pads. A recessed truncated cone in the center of the base plate is used for positioning the outer ring of the seat ring. Bearing holes are opened at the upper ends of the two side arms to support the trunnion assembly. The outer ring of the seat ring is locked to the center of the main support base plate with high-strength bolts and remains stationary. The inner ring of the seat ring is nested inside the outer ring of the seat ring through a single row of four-point contact ball bearings and can rotate 360°. The stator end is concentrically locked to the outer ring of the seat ring and remains stationary; the rotor end is concentrically locked to the inner ring of the seat ring and rotates with the inner ring of the seat ring. The stator side wiring harness is led out through the holes in the main support base plate to the vehicle power supply / controller; the rotor side wiring harness passes sequentially through the center hole of the inner ring of the seat ring, the pitch transmission structure housing, the hollow shaft hole of the trunnion, and the tail of the launching device, so as to achieve uninterrupted power supply, ignition, and signal during n×360° continuous rotation.

[0022] Currently, planetary gear reducers with various transmission ratios are readily available on the market and have proven to be highly reliable. However, gear reducers with built-in worm gear self-locking capabilities are large and heavy, which does not meet the miniaturized integration requirements of this invention. Therefore, the pitch transmission mechanism and horizontal transmission structure in this invention are both independently developed and innovative designs.

[0023] 1. Program Indicators 1.1 System Solution Indicators a. Turntable horizontal turning range n×360°, pitch turning range 0-90°; b. The rotating platform smoke grenade device consists of 16 50mm smoke grenade launchers, arranged in four rows, with four launchers in each row. After receiving the firing command, the device first rotates to the required elevation angle, then to the required horizontal angle, fires one smoke grenade, and then rotates horizontally by 16° to fire the next one, and so on, firing a total of four smoke grenades to complete one protective mission.

[0024] 1.2 Component Design Specifications The performance specifications of the 50mm smoke grenade launcher are as follows: 1) The 50mm smoke grenade launching device has a total of 16 50mm smoke grenade launching tubes, arranged in 4 rows × 4 columns, which can meet the structural strength requirements of continuous 4-round burst firing from the turntable; 2) Capable of loading and firing 50mm smoke grenades; 3) The base of the cylinder is the grounding part, and good grounding should be ensured; 4) Spline parameters at the connection with the turntable trunnion: Module: 2; Number of teeth: 30; Pressure angle: 30°; Fitting length: 15mm; 5) Wiring definition for the transmitting device

[0025] b. The performance specifications of the turntable are as follows: 1) The turntable has a horizontal rotation range of 0 to -180° and 0 to 180°, and two pitch settings of 12° and 90°. It can rotate clockwise or counterclockwise from the initial position to any angle within 180°, and simultaneously achieve rotation between the two pitch angles of 12° and 90°. 2) Overall response time ≤ 3s; 3) Launch strategy: like Figure 2 As shown, the 50mm smoke grenade launcher has a total of 16 rounds, evenly distributed in 4 rows and 4 columns, numbered sequentially from "1" in the upper left corner to "16" in the lower right corner, and fired in order. The firing modes are divided into single-shot mode and 4-round burst mode. In single-shot mode, smoke grenades of any designation can be fired, achieving unidirectional 19° smoke shielding within 3 seconds. Subsequently, the single rank containing this smoke grenade can only fire one shot at a time, not four shots at a time, until reloading. In the 4-round burst mode, the entire row is fired. After the system detects that this row is a row of smoke grenades, one grenades are fired every 16° in the horizontal direction of the turntable, achieving 80° smoke shielding of the vehicle within 3 seconds. 4) It can achieve reverse self-locking for both horizontal and pitch transmission; 5) The materials used for mechanical structural components such as shells and supports must meet the strength check for recoil force (3000N / shot).

[0026] 2. Composition and Function: (1) A 50mm smoke grenade launching device, as the final execution component; The backplate of the 50mm smoke grenade launcher is fixedly connected to the trunnion flange and moves in pitch along with the trunnion assembly. The launch tube is welded to the front of the back plate in a 4×4 array, and the electric firing socket at the tail of the launch tube is connected to the electric rotor end through a wiring harness. Auxiliary support: A sliding pad is provided at the lower end of the back plate, which provides light support on the upper surface of the inner ring of the seat ring, thereby distributing the recoil force and improving rigidity; Grounding: The bottom row of launch tube bases is connected to the main support via copper braided straps to ensure reliable grounding of the launch circuit.

[0027] (2) A horizontal transmission mechanism for driving the inner ring of the seat ring to rotate; like Figure 3 As shown, the horizontal transmission mechanism mainly consists of a housing, a motor, a motor gear, a shaft a, a worm gear, a worm, a shaft b, gear 1, gear 2, an angle sensor, and a seat ring gear. After designing the launch tube size according to the number of smoke grenades, the range of seat ring size can be obtained. By selecting an appropriate transmission ratio, the horizontal transmission mechanism can be designed.

[0028] The motor input speed is 6000 rpm, the seat ring gear output speed is 15 rpm, the total transmission ratio is 400, the motor output shaft diameter is Φ22, the rated torque is 160 N·m, and the maximum torque is 480 N·m. The reduction ratio of each gear is selected according to the spatial dimensions of the structure, and the worm gear is selected to achieve a self-locking structure. By constraining the structural space dimensions, the transmission ratio is rationally allocated. After strength verification calculations, finite element analysis, and other design processes, the following is formed: Figure 4 The horizontal transmission structure shown; The bottom flange of the housing of the horizontal transmission mechanism is bolted to the outer ring side lug of the seat ring and remains stationary; Output gear 2 meshes with the large gear ring of the inner ring of the seat ring; The horizontally integrated servo motor flange is fixed to the side wall of the housing; Transmission chain: The motor gear and the motor output shaft are connected by a spline. The motor gear meshes with gear 1 to form the first stage of reduction. Gear 1 transmits torque to the worm through shaft a, and the worm meshes with the worm wheel to form the second stage of reduction. The worm wheel transmits torque to gear 2 through shaft b, and gear 2 meshes with the seat ring gear to form the third stage of reduction. This drives all rotating parts above the inner ring to rotate synchronously horizontally. An angle sensor is coaxially mounted on shaft b to monitor the rotation angle of the load in real time, provide feedback on the inner ring rotation angle, and send the information back to the information processing module.

[0029] (3) Pitch transmission mechanism, used to drive the launch device to pitch. like Figure 5 As shown, the pitch transmission mechanism mainly consists of a housing, a motor, a motor gear, a shaft a, a worm gear, a worm, a shaft b, a gear 1, a gear 2, an angle sensor, a trunnion, and a tooth arc.

[0030] Analyzing the installation space, the motor's rated speed is 3000 rpm, rated torque is 3.18 N·m, and the maximum speed ratio of the reducer is 100. To meet the output speed of 15 rpm, the motor output speed is selected to be 1500 rpm. At this time, the output torque is 3.18 N·m, and the pitch output speed is 1500 / 100=15 rpm.

[0031] The rated output torque of the pitch drive structure is 3.18×100×0.9=286.2N·m.

[0032] By constraining the structural space dimensions, the transmission ratio is rationally allocated. After strength verification calculations, finite element analysis, and other design processes, a final result is formed. Figure 6 The horizontal transmission structure shown: The bottom flange of the pitch transmission mechanism housing is bolted to the upper surface of the inner ring of the seat ring, and rotates horizontally together with the inner ring of the seat ring. The toothed arc is machined on the outer circle of the trunnion, serving as the final driven component; The pitch-integrated servo motor flange is fixed to the side wall of the housing; Transmission chain: The motor gear and the motor output shaft are connected by a spline. The motor gear meshes with gear 1 to form the first stage of reduction. Gear 1 transmits torque to the worm through shaft a, and the worm meshes with the worm wheel to form the second stage of reduction. The worm wheel transmits torque to gear 2 through shaft b, and gear 2 meshes with the tooth arc to form the third stage of reduction. This drives the trunnion and the launching device to pitch. An angle sensor is coaxially mounted on the worm gear shaft b to monitor the rotation angle of the load in real time, provide feedback on the pitch angle, and send the information back to the information processing module.

[0033] Self-locking: The worm gear pair ensures that the launching device will not pitch or reverse under recoil after power failure.

[0034] (4) Seat ring The seat ring uses a single-row four-point contact ball rotation support for both the inner and outer rings, such as... Figure 7 As shown, when the center diameter of the steel ball is small, the static load-bearing capacity of this slewing bearing structure is high, and the technical and economic indicators (maximum allowable moment of slewing bearing / self-weight of slewing bearing) are good.

[0035] Slewing bearing strength check: Main parameters D0=280, d0=20, a=45° According to JB / T10839-2008, calculate the rated static capacity of the slewing bearing: Co = f0 × d0² × Z × sina Where f0 = 38 N / mm², a = 45° Z=(π×D0-0.5×d0)÷(d0+b)=37 When d0=20, b=3 Therefore, Co = f0 × d0² × Z × sin45° = 38 × 20² × 37 × sin45° = 397676.9 N Refer to JB / T10839-2008 to calculate the safety factor: Calculate the equivalent axial load: Cp=P+(4.37×M÷D0)+3.44×Hr Calculate the safety factor: Fs=Co / Cp The calculation results are shown in the table below: Slewing support verification results

[0036] (5) Trunnion assembly (pitch axis) Static strength analysis of the trunnion under two firing conditions shows that the maximum stress of the trunnion is less than the material yield strength, which meets the requirements.

[0037] The trunnion has a hollow integral structure, and both ends of the trunnion are mounted in the bearing seats of the pitch transmission mechanism housing via bearings; The toothed arc and the trunnion are integrated and mesh with the final gear 2 of the pitch transmission mechanism; The flange in the middle section of the trunnion is bolted to the back plate of the 50mm smoke grenade launcher. Wiring hole: The hollow cavity of the trunnion leads the electrorotator wire bundle to the transmitting device, avoiding cable pulling during rotation.

[0038] Figure 8 , Figure 9 Static strength analyses of the trunnion under 12° launch conditions and 90° launch conditions are presented respectively. (6) Strength verification of the stent

[0039] Figure 10 The finite element method (FEM) verification of the support strength is presented. The conclusion drawn from the FEM verification is that the maximum stress of the support is less than the yield strength of the shell material, and the strength meets the requirements for use.

[0040] (7) Calculation of braking torque Single-shot firing F=3000N; R = 0.109m, which is the distance from the launch tube to the center of rotation; The required braking torque for horizontal applications is 3000 × 0.109 = 327 N·m; R=0.0975, which is the distance from the launch tube to the pitch center; The required braking torque for pitching is 3000 × 0.0975 = 292.5 N·m; When selecting motor braking, the braking torque that each motor can generate is: Horizontal motor: 1.5 N·m × 394.5 (reduction ratio) = 591.75 N·m (motor speed 6000 rpm) Pitch motor: 3.8 N·m × 100 (reduction ratio) = 380 N·m (motor speed 1500 rpm) The braking torque meets the usage requirements.

[0041] a. Calculate the power and speed of the horizontal motor:

[0042] The torque of the load on the motor ; P=0.792×628.3÷1000=0.4976kW=497.6W; That is, for horizontal directions, at least a motor with a rated power of 500W and a motor speed of 6000r / min should be selected.

[0043] b. Calculate the power and speed of the pitch motor:

[0044] The torque of the load on the motor ; P=0.625×628.3÷1000=0.4976kW=392.7W; That is, for pitch, at least a motor with a rated power of 400W and a motor speed of 6000r / min should be selected.

[0045] The key points of this invention are as follows: 1. When the smoke grenade is launched, the large recoil force acts on the turntable structure, generating a reversing torque. At this time, the self-locking characteristic of the worm gear in the transmission structure will overcome the reversing torque and keep the turntable stationary.

[0046] 2. The electric rotating structure inside the seat ring ensures that the wires do not get tangled when the turntable rotates n×360°.

[0047] This invention patent describes a turntable-type smoke grenade protection system applied to a certain type of unmanned vehicle. It is equipped with 16 50mm smoke grenades, and the turntable can achieve a horizontal turning range of n×360° and a pitch turning range of 0-90°. It has single-shot mode and a 4-round salvo mode. When the vehicle is in motion, the turntable-type smoke grenade protection system will quickly and automatically respond based on threat information collected by infrared detectors. By adjusting the firing direction through the turntable, it will fire four 50mm smoke grenades in continuous bursts, achieving shielding protection for the vehicle's top area or a horizontal 80° fan-shaped area. It can continue to actively fire to increase the shielding range, providing excellent shielding against infrared detection from drones, terminally guided munitions, vehicle-mounted tracking devices, and enemy ground armored vehicles.

Claims

1. A rotary table-type smoke grenade protection system, characterized in that, Includes a 50mm smoke grenade launcher, main support, horizontal transmission structure, pitch transmission structure, inner ring of the seat ring, outer ring of the seat ring, electro-rotation, trunnion assembly, and integrated servo motor; the integrated servo motor is divided into horizontal integrated servo motor and pitch integrated servo motor; The bottom of the main support is fixed to the vehicle body or platform through a shock-absorbing pad. The central recessed truncated cone of the main support base plate is used for positioning the outer ring of the seat ring. Bearing holes are opened at the upper ends of the two side arms to support the trunnion assembly. The outer ring of the seat ring is locked in the center of the main support base plate and remains stationary. The inner ring of the seat ring is nested inside the outer ring of the seat ring through a single row of four-point contact ball bearings and can rotate 360°. The 50mm smoke grenade launcher has a total of 16 50mm smoke grenade launch tubes. The back plate is fixed to the trunnion flange and moves in pitch along with the trunnion assembly. The launch tubes are welded to the front of the back plate in a 4×4 square array. The electric firing sockets at the tail of the launch tubes are connected to the electric rotor end through a wiring harness. The lower end of the back plate is equipped with a sliding pad, which is supported on the upper surface of the inner ring of the base ring. The bottom row of launch tube bases is connected to the main support through a copper braided strap to ensure reliable grounding of the launch circuit. The bottom flange of the housing of the horizontal transmission mechanism is bolted to the side lug of the outer ring of the seat ring, which is used to drive the inner ring of the seat ring to rotate. The bottom flange of the pitch transmission mechanism housing is bolted to the upper surface of the inner ring of the seat ring, and rotates horizontally together with the inner ring of the seat ring to drive the pitch of the 50mm smoke grenade launcher. The two ends of the trunnion are mounted in the bearing housing of the pitch transmission mechanism via bearings; The stator end of the electric rotary rotor is concentrically locked to the outer ring of the mounting ring and remains stationary; the rotor end of the electric rotary rotor is concentrically locked to the inner ring of the mounting ring and rotates with the inner ring of the mounting ring; the stator side wiring harness is led out through the hole in the base plate of the main bracket to the vehicle power supply / controller; the rotor side wiring harness passes sequentially through the center hole of the inner ring of the mounting ring, the pitch transmission structure housing, the hollow shaft hole of the trunnion, and the tail of the launching device, so as to achieve uninterrupted power supply, ignition and signal during continuous n×360° rotation; The pitch integrated servo motor flange is fixed to the side wall of the pitch transmission mechanism housing; the horizontal integrated servo motor flange is fixed to the side wall of the horizontal transmission mechanism housing.

2. The rotary table smoke grenade protection system as described in claim 1, characterized in that, The 50mm smoke grenade launcher has two firing modes: single shot and four-shot burst. In single-shot mode, smoke grenades of any designation can be fired, achieving unidirectional 19° smoke shielding within 3 seconds. Subsequently, the single rank containing this smoke grenade can only fire one shot at a time, not four shots at a time, until reloading. In the 4-round burst mode, the entire row is fired. After the system detects that this row is a row of smoke grenades, one grenades are fired every 16° in the horizontal direction of the turntable, achieving 80° smoke shielding of the vehicle within 3 seconds.

3. The rotary table smoke grenade protection system as described in claim 1, characterized in that, The horizontal transmission mechanism includes a housing, a motor, a motor gear, shaft a, a worm gear, a worm, shaft b, gear 1, gear 2, an angle sensor, and a seat ring gear; The bottom flange of the housing of the horizontal transmission mechanism is bolted to the outer ring side lug of the seat ring and remains stationary; Output gear 2 meshes with the large gear ring of the inner ring of the seat ring; The horizontally integrated servo motor flange is fixed to the side wall of the housing; The motor gear and the motor output shaft are connected by a spline. The motor gear meshes with gear 1 to form the first stage of reduction. Gear 1 transmits torque to the worm through shaft a, and the worm meshes with the worm wheel to form the second stage of reduction. The worm wheel transmits torque to gear 2 through shaft b, and gear 2 meshes with the seat ring gear to form the third stage of reduction. This drives all rotating parts above the inner ring to rotate synchronously horizontally. An angle sensor is coaxially mounted on shaft b to monitor the rotation angle of the load in real time, provide feedback on the inner ring rotation angle, and send the information back to the information processing module.

4. The rotary table smoke grenade protection system as described in claim 3, characterized in that, The selection of the worm gear in the horizontal transmission mechanism can achieve a self-locking structure.

5. A turntable-type smoke grenade protection system as described in claim 1, characterized in that, The pitch transmission mechanism includes a housing, a motor, a motor gear, shaft a, a worm gear, a worm, shaft b, gear 1, gear 2, an angle sensor, a trunnion, and a tooth arc; The bottom flange of the pitch transmission mechanism housing is bolted to the upper surface of the inner ring of the seat ring, and rotates horizontally together with the inner ring of the seat ring. The toothed arc is machined on the outer circle of the trunnion, serving as the final driven component; The pitch-integrated servo motor flange is fixed to the side wall of the housing; The motor gear and the motor output shaft are connected by a spline. The motor gear meshes with gear 1 to form the first stage of reduction. Gear 1 transmits torque to the worm gear through shaft a, and the worm gear meshes with the worm wheel to form the second stage of reduction. The worm wheel transmits torque to gear 2 through shaft b, and gear 2 meshes with the tooth arc to form the third stage of reduction. This drives the trunnion and the launching device to pitch. An angle sensor is coaxially mounted on the worm wheel shaft b to monitor the angle of the load rotation in real time, provide feedback on the pitch angle, and send the information back to the information processing module.

6. A turntable-type smoke grenade protection system as described in claim 5, characterized in that, The worm gear pair of the pitch transmission mechanism ensures that the launch device will not reverse pitch under recoil after power failure.

7. A turntable-type smoke grenade protection system as described in claim 1, characterized in that, The inner and outer rings of the seat ring adopt a single row of four-point contact ball rotation support.

8. A turntable-type smoke grenade protection system as described in claim 1, characterized in that, For the pitch-integrated servo motor, select a motor with a rated power of ≥400W and a motor speed of ≥6000r / min.

9. A turntable-type smoke grenade protection system as described in claim 1, characterized in that, For horizontal integrated servo motors, at least a motor with a rated power of ≥500W and a motor speed of ≥6000r / min should be selected.

10. A turntable-type smoke grenade protection system as described in any one of claims 1 to 9, characterized in that, The turntable has a horizontal steering range of n×360° and a pitch steering range of 0-90°, with an overall response time of ≤3s.

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