A single soldier's back-mounted electric drive base for standard firearms

Abstract

The application discloses a single-soldier backpack type electric drive base for a standard firearm, which comprises a base structure, a joint assembly structure, a pitch joint motor, a yaw joint motor, a pitch joint connecting piece and a yaw joint connecting piece, wherein the base structure is used for connecting the whole electric drive base with a human body trunk; the pitch joint motor is connected with the base structure through the pitch joint connecting piece and is used for controlling the pitch movement of the weapon; the yaw joint motor is connected with the rotating end of the pitch joint motor through the yaw joint connecting piece and is used for controlling the yaw movement of the weapon; a buffer structure is arranged between the yaw joint motor and a clamp structure and is used for reducing the recoil force generated when the weapon is fired; and the clamp structure is installed at the end of the buffer structure and is used for clamping and fixing the weapon. The application is directed to the standard firearm containing a picatinny rail, has light weight, good human-computer interaction and human-computer adaptability, and can effectively reduce the impact energy of the weapon firing on the electric drive base and the human body.

Description

Technical Field

[0001] This invention belongs to the technical field of individual soldier equipment systems, specifically relating to an individual soldier's backpack-mounted electrically driven base for standard firearms. Background Technology

[0002] With the continuous evolution of modern warfare, improving individual soldier combat capabilities has become increasingly crucial. As the core equipment of modern infantry combat systems, standard individual firearms directly impact the battlefield situation through their firepower effectiveness and tactical adaptability. As modern warfare evolves towards all-domain mobility, rapid deployment, and precision strikes, traditional individual weapon systems are increasingly revealing significant contradictions between their physical performance and operational requirements in actual combat. When operating traditional standard individual firearms, soldiers primarily rely on their own muscle strength to stabilize and control the weapon. This not only greatly depletes soldiers' physical strength but also makes it difficult to maintain consistent shooting accuracy during prolonged combat or in complex environments. Especially when dealing with emergencies, soldiers often fail to engage targets quickly and accurately due to exhaustion or insufficient reaction time. Meanwhile, breakthroughs in exoskeleton technology, micro servo motors, and high-energy-density batteries have provided technical feasibility for developing new individual weapon support systems.

[0003] Therefore, developing a single-soldier backpack electric drive base for standard individual firearms can provide additional power support and stable control for individual firearms, reduce recoil impact during fire, and improve the combat effectiveness of soldiers in various combat scenarios, which is of great significance. Summary of the Invention

[0004] The purpose of this invention is to address the technical problems existing in the practical application of existing standard individual firearms by designing a single-soldier backpack-mounted electrically driven base to improve the combat capability of individual soldiers.

[0005] The technical solution to achieve the purpose of this invention is as follows:

[0006] A single-soldier backpack-mounted electrically driven base for standard firearms includes:

[0007] The base structure is used to connect the entire electric drive base to the human torso.

[0008] The joint assembly structure includes a pitch joint motor, a yaw joint motor, a pitch joint connector, and a yaw joint connector; the pitch joint motor is connected to the base structure through the pitch joint connector and is used to control the pitch movement of the weapon; the yaw joint motor is connected to the rotating end of the pitch joint motor through the yaw joint connector and is used to control the yaw movement of the weapon.

[0009] A buffer structure, located between the deflection joint motor and the clamping structure, is used to reduce the recoil generated during weapon firing;

[0010] The clamping structure, installed at the end of the buffer structure, is used to clamp and fix the weapon.

[0011] When in a carrying posture, the weapon muzzle points downwards; when in a combat posture, the pitch joint motor drives the weapon to rotate 90° so that the muzzle points horizontally, and the yaw joint motor rotates 180° so that the weapon is rotated to the firing direction.

[0012] The significant advantages of this invention compared to existing technologies are:

[0013] The clamping structure of this invention is applicable to various standard firearms with Picatinny rails; this invention can be easily and efficiently installed on the human body, with good ergonomics; the buffer structure of this invention has good buffering effect and simple structure, and can effectively reduce the impact load on the human body from weapon shooting. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of a rifle mounted on a single-soldier backpack-type electrically driven base according to the present invention;

[0015] Figure 2 This is a three-dimensional structural schematic diagram of the single-soldier backpack electric drive base of the present invention;

[0016] Figure 3 This is a schematic diagram of the base structure of the present invention;

[0017] Figure 4 This is a schematic diagram of the buffer structure of the present invention;

[0018] Figure 5 This is a schematic diagram of the fixture structure of the present invention;

[0019] Figure 6 This is a schematic diagram of the combat posture of the present invention;

[0020] Figure 7 A schematic diagram of a traditional configuration of a single-soldier backpack-mounted electrically driven base and the force exerted on the human upper limbs;

[0021] Figure 8 This is a schematic diagram of the configuration of the single-soldier backpack electric drive base and the force on the human upper limbs designed for this invention. Detailed Implementation

[0022] The present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0023] refer to Figure 1-5 As shown, this embodiment proposes a single-soldier backpack electric drive base for standard firearms, including a base structure, a joint assembly structure, a buffer structure, and a clamping structure.

[0024] The base structure connects the entire electric drive base to the human torso and includes a back frame 1, a shoulder connector 2, and a waist connector 3. The joint assembly structure includes a pitch joint motor 4, a yaw joint motor 5, a pitch joint connector 6, and a yaw joint connector 7. The pitch joint motor 4 and the yaw joint motor 5 control the pitch and yaw movements of the weapon, respectively. The buffer structure is located between the joint assembly structure and the clamping structure and includes a slider guide rail 8, a guide rail connector 9, and a slider connector 10 to reduce the recoil generated when the weapon is fired. The clamping structure 11 is installed at the end of the buffer structure to hold and fix the weapon.

[0025] like Figure 3 As shown, the back frame 1 consists of multiple components, including a shoulder back frame 1-1, an upper waist back frame 1-2, a lower waist back frame 1-3, a back frame hinge 1-4, a shoulder back frame adapter 1-5, and a waist back frame adapter 1-6. The two shoulder back frames 1-1 are symmetrically distributed and welded together with the upper waist back frame 1-2 to form the back frame components, ensuring basic strength. The shoulder back frames 1-1 are hollow, each with threaded holes for installing the shoulder back frame adapter 1-5. The shoulder back frame adapter 1-5 is connected to the shoulder connector 2 via a connecting shaft and a retaining ring. The shoulder back frame adapter 1-5 and the shoulder connector 2 are symmetrically distributed left and right. The welded back frame components are connected to the lower waist back frame 1-3 by threads. Both have multiple hollow designs to reduce weight and facilitate the installation of flexible components such as shoulder straps and back straps. The lower waist back... The lower side of frame 1-3 also has threaded holes that connect to one end of the symmetrically arranged waist back frame adapter 1-6. The other end of the waist back frame adapter 1-6 can be connected to the lower end of waist connector 3 through a connecting shaft. The waist back frame adapter 1-6 and waist connector 3 are symmetrically distributed on the left and right. The left and right sides of the lower waist back frame 1-3 are connected to the back frame hinge 1-4 through a connecting shaft. Each back frame hinge 1-4 is designed with round holes and square holes to install a waist belt to connect with the human waist. The back frame hinges 1-4 can rotate around the connecting shaft to fit the curve of the human waist.

[0026] The pitch joint connector 6 is fixed to the upper ends of the shoulder connector 2 and the waist connector 3 via a connecting shaft, providing a stable support foundation for the entire joint assembly structure. The pitch joint motor 4 is threaded onto the pitch joint connector 6. When the pitch joint motor 4 is activated, it drives the connected components to achieve the pitch movement of the firearm. The yaw joint connector 7 is threaded onto the rotating end of the pitch joint motor 4, thus achieving joint rotation with the pitch joint motor 4. The yaw joint motor 5 is threaded onto the yaw joint connector 7, and its rotating end is connected to a buffer structure. When the yaw joint motor 5 is activated, it enables the yaw movement of the firearm. The pitch joint's range of motion is 0° to 90°, and the yaw joint's range of motion is 0° to 360°. The pitch joint connector 6 is designed with a limit block that cooperates with the limit block on the yaw joint connector 7 to provide mechanical restraint, preventing accidental injury to the human body during motor operation or weapon firing, and reducing safety hazards to a certain extent.

[0027] like Figure 4 As shown, the buffer structure includes a slider guide rail 8, a guide rail connector 9, and a slider connector 10, used to reduce the recoil generated during weapon firing. The slider connector 10 is further divided into a buffer spring 10-1, a buffer end cap 10-2, a buffer pad 10-3, and a clamp connector 10-4. The guide rail connector 9 is threaded onto the rotating shaft of the deflection joint motor 5. The two slider guide rails 8 are then symmetrically threaded onto the guide rail connector 9, allowing linear motion between the slider and the guide rail. The two symmetrical clamp connectors 10-4 are threaded onto the sliders. Two sets of buffer springs 10-1 are installed on both sides of the guide rail connector 9. The two sets of buffer springs 10-1 are connected to the two buffer end caps 10-2, which are then connected to the two buffer pads 10-3. The two buffer pads 10-3 are installed on the clamp connectors 10-4, achieving a buffering effect.

[0028] When the weapon fires, it causes the clamp 11 to recoil, and the two clamp connectors 10-4 connected to the clamp also move linearly. The clamp connectors 10-4 compress the buffer pad 10-3 and the buffer end cap 10-2, compressing the buffer springs 10-1 on both sides. The linear motion is achieved through the linear slider guide rail 8. The buffer springs 10-1 are inside the guide rail connector 9. Both the buffer springs 10-1 and the guide rail are fixed to the deflection joint motor to achieve the buffering effect. When the weapon recoil is complete, the buffer springs 10-1 release energy, pushing the slider connector 10, the weapon, and the clamp 11 back to their original positions.

[0029] like Figure 5As shown, the clamp structure 11 is installed at the end of the buffer structure for clamping and securing the weapon. The outer clamp 11-1 is designed in a T-shape, allowing it to fit tightly with the two clamp connectors 10-4. Two round holes are designed between the outer clamp 11-1 and the two clamp connectors 10-4 for installing two quick-release pins for easy installation and removal. The weapon is secured between the outer clamp 11-1 and the inner clamp 11-2 using locking bolts and nuts. This clamp structure can accommodate various types of weapons with Picatinny rails, allowing for flexible weapon replacement according to mission requirements in different combat scenarios.

[0030] like Figure 6 The image shows the combat posture of the single-soldier backpack electric drive base facing the standard firearm. The firearm held by the single-soldier backpack electric drive base is first rotated 90° to the top by the pitch joint motor 4, and then rotated 180° to the firing direction by the yaw joint motor 5.

[0031] like Figure 7 and Figure 8 As shown, by comparing the traditional backpack electric drive base with the new backpack electric drive base designed in this invention, the stress analysis of the carrying mode is carried out through load-bearing mechanics theory, taking the upper body of the human body as the analysis object and the upper body torque as the main indicator, to prove the rationality of the design configuration of this invention.

[0032] The forces acting on the upper body mainly include: the weight of the upper body, G. t The load on the electric drive base is borne by the tension F of the upper strap. Uts and the lower shoulder strap tension F Dts The force acting on the shoulder is equivalent to a concentrated force F. ts Replacement; the frictional force f between the straps and the upper body s The force F exerted by the bottom of the electric drive base on the upper body tw The frictional force f between the bottom of the electric drive base and the upper body tw The vertical force F exerted by the lower limbs on the upper body LBy and the force F in the horizontal direction LBx This is an interaction force between the upper body and the lower limbs. For a traditional backpack-style electrically driven base, analyzing the above force conditions in the sagittal plane of the human body, the following equilibrium equation can be derived:

[0033] (-F ts ·cosθ)+(-f s ·sinθ)+F tw +F LBx =0

[0034] (-F ts ·sinθ)+(-f tw )+(-Gt )+F LBy +f s ·cosθ=0

[0035] In the formula, θ is the equivalent concentrated force F of the strap on the electric drive base. ts Angle with the horizontal direction.

[0036] The muscles of the upper body generate a torque to balance the rotational force exerted on the body by the load. S The torque in the forward direction, the torque generated by this muscle tissue is the same as the torque generated by the lower limbs on the upper body when standing still. S This is the lumbosacral joint. The above forces affect O. S The equilibrium formula for the generated torque is as follows:

[0037] (-M T1 )+y s ·F ts ·cosθ+(-x s ·F ts ·sinθ)+y s ·f s ·sinθ+x s ·f s ·cosθ

[0038] +(-x w ·f tw )+(-y w ·F tw )+(-G t ·x t ) = 0

[0039] In the formula M T1 The torque generated by the lower limbs on the upper body; y s and x s For F ts Point of application and O S The vertical and horizontal distance between them; y w and x w For F tw Distances of the point of application to the vertical and horizontal directions; x t For G t The distance between the point of application and the horizontal direction.

[0040] The novel configuration of the electric-driven backpack base designed in this invention is analyzed using the same method as traditional backpack configurations, analyzing the mathematical model of the human body when standing statically. The difference lies in the concentrated force F exerted on the shoulder by the electric-driven base under its load. ts The point of application and the direction of application are different. In the sagittal plane, the equilibrium equations can be derived similarly to those for traditional configuration force analysis, as follows:

[0041] F ts ·cosθ+f ts ·sinθ+F tw -F LBx =0

[0042] (-F ts ·sinθ)+(-f tw )+(-G t )+F LBy +f ts ·cosθ=0

[0043] For O S Taking moments at a point, we can obtain the following from the equilibrium of the planar couple system:

[0044] (-M T2 )-y s ·F ts ·cosθ+x s ·F ts ·sinθ-y s ·f ts ·sinθ-x s ·f ts ·cosθ

[0045] +(-x w ·f tw )+(-y w ·F tw )+(-G t ·x t ) = 0

[0046] In the formula M T2 This refers to the torque generated by the lower limbs on the upper body.

[0047] Calculations show that the difference Δ = M between the upper body torque of the traditional configuration of the single-soldier backpack electric drive base and the upper body torque of the configuration designed in this invention. T1 -M T2 The condition >0 is always true, which means that under the configuration designed in this invention, the torque on the upper body of the human body is always less than that of the traditional configuration. The human torso musculoskeletal system is more likely to resist the posture changes caused by the load of the electric drive base, the human body's metabolic consumption is less, and the risk of musculoskeletal damage when carrying the wearable electric drive base for a long time is reduced.

[0048] Once the configuration of the individual soldier's backpack-mounted electric drive base is determined, the dimensions of the shoulder connector 2 and the waist connector 3 must be determined. The joint assembly structure, buffer structure, and clamping structure supported by the base structure should be as close to the human body as possible to minimize the shift of the electric drive base's center of gravity. Simultaneously, a safe distance must be maintained between the center of the base structure supporting the motor components and the human body. Using the human body as a reference and the horizontal plane as a reference, the vertical distance from the human head to the weapon when the backpack-mounted electric drive base is deployed to a combat posture is set to 100mm. Using the coronal plane as a reference, the vertical distance between the center of the base supporting the motor components and the human body's coronal plane is set to 200mm. The shoulder connector 2 and the waist connector 3 can be designed as cantilever beams, fixed at one end and subjected to concentrated forces at the other. The formula for calculating the maximum bending moment on the cross-section is:

[0049] M max =FL

[0050] In the formula: F is the concentrated force acting on the free ends of the shoulder connector 2 and the waist connector 3. Taking 15kg as the total weight for support calculation, the weight of each shoulder connector 2 and waist connector 3 can be approximately calculated as F = 37.5N; L is the distance from the free end to the fixed end. Based on the set safety distance and combined with human body size, the length of the shoulder connector 2 is estimated to be L1 = 150mm, and the distance of the waist connector 3 is estimated to be L2 = 450mm.

[0051] To meet the strength requirements of shoulder connector 2 and waist connector 3, the following strength conditions must be met:

[0052]

[0053] In the formula: [σ] represents the allowable normal stress of the material. The shoulder connector 2 and the waist connector 3 are made of aluminum alloy 6061, and their allowable normal stress is 200 MPa. W is the bending section modulus. For rectangular sections... b is the cross-sectional width, here the shoulder connector cross-sectional width is 3mm, and h is the cross-sectional height; for cylindrical cross-sections d is the cross-sectional diameter of the waist connector.

[0054] The calculations show that h ≥ 7.5 mm and d ≥ 9.5 mm. Based on these results, the cross-sectional height h of the shoulder connector 2 is selected as 15 mm, and the average diameter d of the waist connector 3 is selected as 13 mm.

Claims

1. A single-soldier backpack-mounted electrically driven base for standard firearms, characterized in that, include: The base structure is used to connect the entire electric drive base to the human torso. The base structure includes a back frame, shoulder connectors, and waist connectors; the back frame includes a shoulder back frame, an upper waist back frame, a lower waist back frame, a back frame hinge, a shoulder back frame adapter, and a waist back frame adapter; two shoulder back frames are symmetrically fixed to the upper waist back frame; the shoulder back frame adapter is connected to the shoulder back frame for mounting the shoulder connector; the upper waist back frame is connected to the lower waist back frame, and waist back frame adapters are symmetrically arranged on the lower side of the lower waist back frame, with the lower ends of the waist back frame adapters connected to the waist connectors; the left and right sides of the lower waist back frame are connected to the back frame hinges via connecting shafts; the joint assembly structure is supported on the back frame by the two left and right shoulder connectors and corresponds to the shoulders of the human body, and is supported on the back frame by the two left and right waist connectors and corresponds to the waist of the human body; The joint assembly structure includes an elevation joint motor, a yaw joint motor, an elevation joint connector, and a yaw joint connector; the elevation joint motor is connected to the base structure through the elevation joint connector and is used to control the elevation movement of the weapon. The yaw joint motor is connected to the rotating end of the pitch joint motor via a yaw joint connector to control the weapon's yaw motion; the pitch joint has a motion angle of 0° to 90°, and the yaw joint has a motion angle of 0° to 360°. A buffer structure, positioned between the deflection joint motor and the clamping structure, is used to reduce the recoil generated during weapon firing. The buffer structure includes a slider guide rail, a guide rail connector, and a slider connector. The slider connector includes a buffer spring, a buffer end cap, a buffer pad, and a clamping connector. The guide rail connector is mounted on the rotating shaft of the deflection joint motor. Two slider guide rails are symmetrically mounted on the guide rail connector, and two symmetrical clamping connectors are mounted on the sliders of the slider guide rails. Two sets of buffer springs are installed on both sides of the guide rail connector. The two buffer springs are connected to two buffer end caps, which are then connected to two buffer pads. The two buffer pads are mounted on the clamping connector. A clamping structure, installed at the end of a buffer structure, is used to clamp and fix a weapon; the clamping structure includes an outer clamp and inner clamps; the outer clamp is connected to the buffer structure; the outer clamp is connected to two inner clamps to fix the weapon. When in the carrying posture, the weapon muzzle points downwards; when in the combat posture, the pitch joint motor drives the weapon to rotate 90° so that the muzzle points horizontally, and the yaw joint motor rotates 180° so that the weapon is rotated to the firing direction. The following equilibrium equations are satisfied: in This refers to the torque generated by the lower limbs on the upper body. The equivalent concentrated force of the strap on the electric drive base Angle with the horizontal direction, and for Point of application and The vertical and horizontal distances between them; and The force exerted on the upper body by the bottom of the electric drive base Distance of the point of application from the vertical and horizontal directions; For the weight of the upper body Distance between the point of application and the horizontal direction; The electric drive base is supported by the tension of the upper back strap. and the tension of the lower shoulder strap The equivalent concentrated force acting on the shoulder; It is the lumbosacral joint.

2. The single-soldier backpack-type electrically driven base for standard firearms according to claim 1, characterized in that, The calculation process for the cross-sectional height of the shoulder connector and the waist connector is as follows: Calculate the maximum bending moment on the cross section: In the formula: It is a concentrated force acting on the free ends of the shoulder connector and the waist connector. This is the distance from the free end to the fixed end; Meets strength requirements: In the formula: The allowable normal stress of the material, The section modulus is the bending section modulus for rectangular sections. , For the cross-sectional width, This is the cross-sectional height; for a cylindrical cross-section , The diameter of the cross-section of the waist connector.

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