Single-soldier backpack type electric drive base facing standard firearms

Abstract

The invention discloses an individual soldier backpack type electric drive base facing standard firearms, comprising: a base structure for connecting the whole electric drive base with a human body trunk; the joint assembling structure comprises a pitching joint motor, a deflection joint motor, a pitching joint connecting piece and a deflection joint connecting piece; the pitching joint motor is connected with the base structure through the pitching joint connecting piece and used for controlling pitching motion of the weapon. The deflection joint motor is connected with the rotating tail end of the pitching joint motor through the deflection joint connecting piece and used for controlling deflection movement of the weapon. The buffer structure is arranged between the deflection joint motor and the clamp structure and used for reducing recoil force generated during weapon shooting; and the clamp structure is mounted at the tail end of the buffer structure and used for clamping and fixing the weapon. The device faces standard firearms with picatinny guide rails, is light in weight, has good man-machine interaction and man-machine adaptability, and can effectively reduce the impact energy of weapon shooting on an electric drive base and a human body.

Description

Technical Field

[0001] The invention belongs to the technical field of individual soldier equipment systems, and in particular relates to an individual soldier backpack electric drive base for standard firearms. Background Art

[0002] With the continuous evolution of modern warfare, the improvement of individual combat capabilities has become increasingly critical. As the core equipment of the modern infantry combat system, the firepower effectiveness and tactical adaptability of individual standard firearms directly affect the battlefield situation. As the modern warfare form evolves towards full-domain mobility, rapid deployment, and precision strikes, traditional individual weapon systems have gradually exposed significant contradictions between physical performance and combat needs in actual combat. When operating traditional individual standard firearms, soldiers mainly rely on their own muscle strength to stabilize and control the firearms, which not only greatly consumes the soldiers' physical strength, but also makes it difficult to ensure continuous and stable shooting accuracy in long-term combat or complex environments. Especially when responding to emergencies, soldiers are often unable to quickly and accurately shoot at targets due to physical exhaustion or instantaneous reaction. At the same time, breakthroughs in exoskeleton technology, micro servo motors, high-energy-density batteries, and other fields have provided technical feasibility for the development of new individual weapon support systems.

[0003] Therefore, the development of an individual-soldier backpack electric drive base for individual standard firearms can provide additional power support and stable control for individual firearms, reduce the recoil impact when the firearm is fired, and improve the combat effectiveness of soldiers in various combat scenarios, which is of great significance. Summary of the invention

[0004] The purpose of the present invention is to design a single-soldier backpack electric drive base to improve the combat capability of the single soldier in view of the technical problems existing in the actual combat application of the existing single-soldier standard firearms.

[0005] The technical solution to achieve the purpose of the present invention is:

[0006] A single-soldier backpack electric drive base for standard firearms, comprising:

[0007] A base structure, used to connect the electric drive base as a whole to the human body trunk;

[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 to control the pitch movement of the weapon; the yaw joint motor is connected to the rotation end of the pitch joint motor through the yaw joint connector to control the yaw movement of the weapon;

[0009] A buffer structure, disposed between the deflection joint motor and the clamp structure, for reducing the recoil generated when the weapon is fired;

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

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

[0012] Compared with the prior art, the present invention has the following significant advantages:

[0013] The clamp structure of the present invention is suitable for a variety of standard firearms with Picatinny rails; the present invention can be simply and efficiently installed on the human body and has good human-machine adaptability; the buffer structure of the present invention has good buffering effect and simple structure, and can effectively reduce the impact load of weapon shooting on the human body. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a schematic diagram of a rifle mounted on a single-soldier backpack electric drive base of the present invention;

[0015] Figure 2 It is a schematic diagram of the three-dimensional structure 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 It is a schematic diagram of the clamp structure of the present invention;

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

[0020] Figure 7 It is a schematic diagram of the traditional configuration of a single-soldier backpack electric drive base and the forces on the human upper limbs;

[0021] Figure 8 A schematic diagram of the force on a single-soldier backpack electric drive base and human upper limbs of the configuration designed for the present invention. DETAILED DESCRIPTION

[0022] The present invention is further described below in conjunction with 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 clamp structure.

[0024] The base structure is used to connect the electric drive base as a whole to the human body trunk, 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, and the pitch joint motor 4 and the yaw joint motor 5 respectively control the pitch movement and yaw movement of the weapon; the buffer structure is arranged between the joint assembly structure and the clamp structure, and includes a slider guide rail 8, a guide rail connector 9 and a slider connector 10, which is used to reduce the recoil generated when the weapon is fired; the clamp structure 11 is installed at the end of the buffer structure, and is used to clamp and fix the weapon.

[0025] like Figure 3 As shown, the backpack 1 is composed of multiple components, including a shoulder backpack 1-1, an upper waist backpack 1-2, a lower waist backpack 1-3, a backpack hinge 1-4, a shoulder backpack adapter 1-5 and a waist backpack adapter 1-6. The two shoulder backpacks 1-1 are symmetrically distributed and welded together with the upper waist backpack 1-2 to form a backpack component to ensure basic strength. The shoulder backpack 1-1 is a hollow design, each with a threaded hole to install the shoulder backpack adapter 1-5. The shoulder backpack adapter 1-5 is connected to the shoulder connector 2 through a connecting shaft and a retaining ring. The shoulder backpack adapter 1-5 and the shoulder connector 2 are symmetrically distributed on the left and right; the welded backpack component is connected to the lower waist backpack 1-3 through threads, and both have multiple hollow designs to reduce weight and facilitate the installation of flexible bodies such as shoulder straps and straps. The lower waist backpack 1-3 is connected to the shoulder backpack 1-5 through a threaded connection. A threaded hole is also reserved on the lower side of the frame 1-3 for connection with one end of a waist back frame adapter 1-6 which is symmetrically arranged on the left and right sides. The other end of the waist back frame adapter 1-6 can be connected to the lower end of the waist connector 3 through a connecting shaft. The waist back frame adapter 1-6 and the waist connector 3 are symmetrically distributed on the left and right sides. The left and right sides of the waist lower back frame 1-3 are connected to the back frame hinges 1-4 through a connecting shaft. Each back frame hinge 1-4 is designed with a round hole and a square hole to install a belt to connect with the human waist. The back frame hinges 1-4 can rotate around the connecting shaft to fit the curved surface 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 through a connecting shaft, providing a stable support foundation for the entire joint assembly structure. The pitch joint motor 4 is installed on the pitch joint connector 6 by a thread. When the pitch joint motor 4 is started, it can drive the components connected thereto to realize the pitch motion of the firearm. The deflection joint connector 7 is connected to the rotating end of the pitch joint motor 4 by a thread, thereby realizing the common rotation with the pitch joint motor 4. The deflection joint motor 5 is fixed to the deflection joint connector 7 by a thread, and its rotating end is connected to the buffer structure. When the deflection joint motor 5 is started, the deflection motion of the firearm can be realized. The motion angle of the pitch joint is 0° to 90°, and the motion angle of the deflection joint is 0° to 360°. The pitch joint connector 6 is designed with a limit block that cooperates with the limit block on the deflection joint connector 7 to play a role of mechanical limit, preventing accidental damage to the human body when the motor is working and rotating or the weapon is fired, and reducing safety hazards to a certain extent.

[0027] like Figure 4 As shown, the buffer structure includes a slider rail 8, a rail connector 9 and a slider connector 10, which are used to reduce the recoil generated when the weapon is fired. The slider connector 10 is further divided into a buffer spring 10-1, a buffer end cover 10-2, a buffer pad 10-3 and a fixture connector 10-4. The guide rail connector 9 is installed on the rotating shaft of the deflection joint motor 5 through threads, and the two slider rails 8 are symmetrically installed on the guide rail connector 9 through threads. The slider and the guide rail can make linear motion. Two symmetrical fixture connectors 10-4 are respectively installed on the slider through threads. Two groups of buffer springs 10-1 are installed on both sides of the guide rail connector 9. The two groups of buffer springs 10-1 are respectively connected to the two buffer end covers 10-2, and the two buffer end covers 10-2 are connected to the two buffer pads 10-3. The two buffer pads 10-3 are installed on the fixture connector 10-4 to achieve a buffering effect.

[0028] When the weapon is fired, it drives the clamp 11 to recoil together, and the two clamp connectors 10-4 connected to the clamp also make linear motion. The clamp connector 10-4 squeezes the buffer pad 10-3 and the buffer end cover 10-2 to compress the buffer springs 10-1 on both sides to move. The linear motion is achieved by the linear slider guide 8. The buffer spring 10-1 is in the guide connector 9. The buffer spring 10-1 and the guide are fixed on the deflection joint motor to achieve a buffering effect. When the weapon recoils, the buffer spring 10-1 releases energy to push the slider connector 10, the weapon and the clamp 11 to reset.

[0029] like Figure 5As shown, the clamp structure 11 is installed at the end of the buffer structure to clamp and fix the weapon. The outer clamp 11-1 is designed in a T shape, which can fit tightly with the two clamp connectors 10-4, and two round holes are designed between the outer clamp 11-1 and the two clamp connectors 10-4 to install two quick-release pins for easy installation and removal. The outer clamp 11-1 and the inner clamp 11-2 are fastened to the weapon by locking bolts and nuts. The clamp structure can adapt to various types of weapons designed with Picatinny rails, and can flexibly replace weapons according to mission requirements in different combat scenarios.

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

[0031] like Figure 7 and Figure 8 As shown, a traditional backpack electric drive base and a backpack electric drive base of a new configuration designed in the present invention are compared, the force analysis of the carrying mode is carried out through the theory of weight-bearing mechanics, etc., the upper body of the human body is taken as the analysis object, and the torque of the upper body is taken as the main indicator, which proves the rationality of the design configuration of the present invention.

[0032] The forces acting on the upper body of the human body mainly include: the gravity of the upper body G t ; The load of the electric drive base is through the upper strap tension F Uts and lower strap tension F Dts The force acting on the shoulder is equivalent to the concentrated force F ts Instead; the friction between the straps and the upper body f s ; The force F exerted by the bottom of the electric drive base on the upper body tw ; Friction force f between the bottom of the electric drive base and the upper body tw ; The vertical force F of the lower limbs on the upper body LBy and the force F in the horizontal direction LBx , which is an interaction force with the force of the upper body on the lower limbs. For the traditional backpack electric drive base, in the sagittal plane of the human body, the balance equation can be listed as follows based on the above force conditions

[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] Where θ is the equivalent concentrated force F of the strap on the electric drive base ts Angle with the horizontal.

[0036] The muscles of the upper body will generate a torque to balance the rotation of the weight on the body. S 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 The above forces have an effect on O S The equilibrium formula for the torque generated 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] Where M T1 is the torque generated by the lower limbs of the human body on the upper body; s and x s F ts Action point and O S The vertical and horizontal distance between w and x w F tw The vertical and horizontal distances between the action point and the target point; x t G t The horizontal distance from the point of action.

[0040] For the new backpack electric drive base designed by the present invention, the analysis method is consistent with the traditional backpack solution, and the mathematical model established by the human body when standing statically is analyzed. The difference between the two is the concentrated force F acting on the shoulder by the electric drive base load ts The point of action is different from the direction of action. In the sagittal plane, the equilibrium equation can be listed as follows, which is the same as the traditional configuration force analysis:

[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 the moment at a point, we can get

[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] Where M T2 It is the torque generated by the lower limbs of the human body on the upper body.

[0047] It can be calculated that the difference between the upper body moment of the traditional configuration of the single-soldier backpack electric drive base and the upper body moment of the design configuration of the present invention is Δ=M T1 -M T2 >0 is always true, which means that under the configuration designed by the present invention, the torque on the upper body of the human body is always smaller than that in the traditional configuration. It is easier for the musculoskeletal system of the human trunk to resist the posture changes caused by the load of the electric drive base, the metabolic consumption of the human body is smaller, and the risk of musculoskeletal injury when carrying the wearable electric drive base for a long time will be reduced.

[0048] After determining the configuration of the single-soldier backpack electric drive base, the size of the shoulder connector 2 and the waist connector 3 must be determined. The joint assembly structure, buffer structure and clamp structure supported by the base structure should be as close to the human body as possible to reduce the offset of the center of gravity of the electric drive base. At the same time, it is also necessary to consider that the center of the motor components supported by the base structure should maintain a certain safety distance from the human body. Taking the human body as a reference and the horizontal plane as a reference, the vertical distance from the human head to the weapon is set to 100mm after the gun of the backpack electric drive base is deployed to the combat posture. The vertical distance between the center of the base supporting the motor components and the human coronal plane is set to 200mm with the coronal plane as a reference. The shoulder connector 2 and the waist connector 3 can be designed as a cantilever beam with one end fixed and the other end subjected to concentrated force. The calculation formula for the maximum bending moment of the cross section is:

[0049] M max =FL

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

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

[0052]

[0053] Where: [σ] is the allowable normal stress of the material. The material used for the shoulder connector 2 and the waist connector 3 is aluminum alloy 6061, and its allowable normal stress is 200MPa. W is the bending section coefficient. For a rectangular section b is the cross-section width. Here, the cross-section width of the shoulder connector is 3 mm. h is the cross-section height. d is the cross-sectional diameter of the waist connector.

[0054] After calculation, it is obtained that: h≥7.5mm, d≥9.5mm. Based on this result, the cross-sectional height h of the shoulder connecting part 2 is selected as 15mm, and the average diameter d of the waist connecting part 3 is selected as 13mm.

Claims

1. A single-soldier backpack electric drive base for standard firearms, characterized in that: include: A base structure, used to connect the electric drive base as a whole to the human body trunk; The joint assembly structure includes a pitch joint motor, a yaw joint motor, a pitch joint connecting piece, and a yaw joint connecting piece; 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 rotation end of the pitch joint motor through the yaw joint connector to control the yaw movement of the weapon; A buffer structure, disposed between the deflection joint motor and the clamp structure, for reducing the recoil generated when the weapon is fired; The clamp structure is installed at the end of the buffer structure and is used to clamp and fix the weapon. When the weapon is in the carrying posture, the muzzle is downward; when the weapon is in the combat posture, the pitch joint motor drives the weapon to rotate 90° so that the muzzle points to the horizontal direction, and the yaw joint motor rotates 180° so that the weapon rotates to the shooting direction.

2. The single-soldier backpack electric drive base for standard firearms according to claim 1, characterized in that: The base structure includes a back frame, a shoulder connector and a waist connector; The joint assembly structure is supported on the back frame by two left and right shoulder connectors and corresponds to the shoulders of the human body. The joint assembly structure is supported on the back frame by two left and right waist connectors and corresponds to the waist of the human body.

3. The single-soldier backpack electric drive base for standard firearms according to claim 2, characterized in that: The backpack includes a shoulder backpack, an upper waist backpack, a lower waist backpack, a backpack hinge, a shoulder backpack adapter and a waist backpack adapter; two shoulder backpacks are symmetrically fixed on the upper waist backpack; the shoulder backpack adapter is connected to the shoulder backpack for installing the shoulder connector; the upper waist backpack is connected to the lower waist backpack, the waist backpack adapter is symmetrically arranged on the lower side of the lower waist backpack, and the waist backpack adapter is connected to the lower end of the waist connector; the left and right sides of the lower waist backpack are connected to the backpack hinge through a connecting shaft.

4. The single-soldier backpack electric drive base for standard firearms according to claim 1, characterized in that: The buffer structure comprises a slider guide rail, a guide rail connector and a slider connector; the slider connector comprises a buffer spring, a buffer end cover, a buffer pad and a clamp connector; The guide rail connecting piece is installed on the rotating shaft of the deflection joint motor, the two slider guide rails are symmetrically installed on the guide rail connecting piece, and the two symmetrical clamp connecting pieces are installed on the sliders of the slider guide rails; two groups of buffer springs are installed on both sides of the guide rail connecting piece, the two buffer springs are respectively connected to the two buffer end covers, the two buffer end covers are further connected to the two buffer pads, and the two buffer pads are installed on the clamp connecting piece.

5. The single-soldier backpack electric drive base for standard firearms according to claim 1, characterized in that: It satisfies the following equilibrium equation: (-M T2 )-y s ·F ts ·cosθ+x s ·F ts ·sinθ-y s ·f ts ·sinθ-x s ·f ts ·cosθ+(-x w ·f tw )+(-y w ·F tw )+(-G t ·x t )=0 Among them, M T2 is the torque generated by the lower limbs of the human body on the upper body, and θ is the equivalent concentrated force F of the straps on the electric drive base ts Angle with horizontal, y s and x s F ts Action point and O S The vertical and horizontal distance between w and x w F is the force F exerted by the bottom of the electric drive base on the upper body tw The vertical and horizontal distances between the action point and x t is the weight of the upper body G t The distance between the action point and the horizontal direction; F ts Load the electric drive base with the upper strap tension F Uts and lower strap tension F Dts Equivalent concentrated force acting on the shoulder; O S It is the lumbar sacral joint point.

6. The single-soldier backpack electric drive base for standard firearms according to claim 1, characterized in that: The calculation process of the section height of the shoulder connector and the waist connector is: Calculate the maximum bending moment of the cross section: M max =FL Where: F is the concentrated force acting on the free ends of the shoulder connector and the waist connector, and L is the distance from the free end to the fixed end; Satisfy the strength condition: Where: [σ] is the allowable normal stress of the material, W is the bending section coefficient, for a rectangular section b is the section width, h is the section height; for cylindrical sections d is the cross-sectional diameter of the waist connector.

7. The single-soldier backpack electric drive base for standard firearms according to claim 1, characterized in that: The clamp structure comprises an outer clamp and an inner clamp; the outer clamp is connected with the buffer structure; and the outer clamp is connected with two inner clamps to fix the weapon.

8. The single-soldier backpack electric drive base for standard firearms according to claim 1, characterized in that: The movement angle of the pitch joint is 0° to 90°, and the movement angle of the yaw joint is 0° to 360°.

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