A backpack device with dynamic load reduction and energy capture capabilities

Abstract

The present invention discloses a backpack device with dynamic load reduction and energy capture capabilities, including a backpack with a hollow back, a backboard, a sliding device, and shoulder straps. The device has multiple working modes. When in a load reduction or power generation mode, the backboard is fixed to the back of the human body, the lower end of the shoulder strap is connected to the backboard, and the upper end is connected to one end of a cable, and is connected to a spring damping mechanism inside the backpack through the cable. By adjusting the internal connection of the spring damping structure, it can be switched to a load reduction mode or a power generation mode; when in the normal mode, the upper end of the shoulder strap is connected to the upper half of the backpack, and the lower end is connected to the lower half of the backpack, thereby realizing mode conversion. The present invention cleverly sets a spring damping structure that can switch the spring stiffness coefficient, matches different spring stiffness coefficients to loads of different masses, and uses the spring damping structure and the sliding device to make the vibration of the backpack and the vibration of the human body form a phase difference and displacement difference, thereby achieving the purpose of load reduction and power generation.

Description

Technical Field

[0001] The present invention relates to the field of human wearable equipment, and in particular to a backpack device with dynamic load reduction and energy capture capabilities. Background Art

[0002] At present, soldiers are carrying more and more equipment, which puts high demands on the physical fitness of soldiers. When the human body walks, the center of gravity of the human body will form a periodic displacement in the vertical direction. Due to this displacement, the pressure exerted on the human body by the heavy objects carried by the human body will become a dynamic force that changes with the walking cycle, fluctuating up and down at the gravity value of the heavy object, and the peak pressure can reach 2 to 3 times the gravity value of the heavy object. In addition, the application of more and more high-tech equipment in individual soldiers has also increased the demand and dependence on electric energy. The power supply of individual soldiers has become one of the key factors restricting the command and control ability and survival maintenance ability of individual soldiers in the information battlefield. At present, the electric energy supplement is generally achieved by carrying batteries, and the batteries carried bring weight burden to soldiers. Therefore, it is very necessary and meaningful to find a method that can provide certain assistance to the human body, reduce the dynamic load pressure on the shoulders, efficiently collect the mechanical energy generated by the human body walking, and realize sustainable power supply for information equipment. According to the network search, there is currently no method or device similar to the present invention for reducing the pressure on the human trunk and energy capture when the human body carries heavy objects. Summary of the invention

[0003] In order to solve the above problems, a backpack device with dynamic load reduction and energy capture capabilities is proposed. The present invention cleverly arranges a spring damping structure that can adjust the spring stiffness coefficient and switch the working mode, matches different spring stiffness coefficients to loads of different masses and human walking frequencies, and utilizes the spring damping structure and the sliding device to make the vibration of the backpack and the vibration of the human body form a phase difference and displacement difference, thereby achieving the purpose of load reduction and power generation. Analysis shows that the backpack device can effectively reduce the dynamic load pressure on the human body when walking with a load, and can efficiently collect human energy and convert it into electrical energy. The device is particularly suitable for field workers, soldiers, etc. who need to carry heavy loads and need electrical energy for endurance, which can improve work efficiency, extend working time and reduce burden.

[0004] The object of the present invention is achieved by at least one of the following technical solutions.

[0005] A backpack device with dynamic load reduction and energy capture capabilities, comprising a backpack, shoulder straps, a spring damping mechanism, a back plate and a sliding device.

[0006] The backpack is provided with a spring damping connecting piece;

[0007] The upper end of the shoulder strap may be fixedly connected to one end of the spring damping connector;

[0008] The back plate is arranged on the back of the backpack, and the back plate can be fixedly connected to the lower end of the shoulder strap;

[0009] The sliding device is slidably disposed between the backpack and the backboard;

[0010] The spring damping mechanism is arranged inside the backpack, and the spring damping mechanism includes a mounting frame and two spring damping assemblies fixedly arranged on the mounting frame, each of the spring damping assemblies includes a generator with a speed increasing mechanism, a cable fixing shaft, a cable, a first-stage spring, a second-stage spring, a first-stage latch, a second-stage latch, a first-stage spring shaft and a second-stage spring shaft, the generator is fixed on the mounting frame, the cable fixing shaft is sleeved on the motor input shaft of the generator, the first-stage spring shaft is coaxially arranged with the motor input shaft and can transmit power through the first-stage latch, the second-stage spring shaft and the first-stage spring shaft can transmit power through the second-stage latch, when the first-stage spring shaft and the motor input shaft transmit power through the first-stage latch and the second-stage spring shaft and the first-stage spring shaft transmit power through the second-stage latch, the first-stage spring and the second-stage spring are connected in parallel.

[0011] Furthermore, fixing pieces are respectively provided at the upper and lower ends of the back of the backpack, and the two ends of the shoulder straps can be fixedly connected to the two fixing pieces respectively.

[0012] Furthermore, the back plate and the back side of the backpack form a closed space, and the sliding device is arranged in the closed space to protect the sliding device.

[0013] Furthermore, the sliding device includes a plurality of universal wheels, and the rollers of each universal wheel are located on the same plane. The sliding device generates surface contact with the back plate during movement, converting the sliding friction between the backpack and the back of the human body into rolling friction between the sliding device and the back plate, thereby improving the energy collection efficiency of the device.

[0014] Furthermore, a plurality of ventilation holes are arranged on the back plate.

[0015] Furthermore, the curved surface of the back plate corresponds to the curved surface of the back of the human body and has good fit.

[0016] Furthermore, the spring damping mechanism is fixed on the mounting frame by means of a mounting buckle, and the two spring damping assemblies are centrally symmetrical and coaxially arranged about the center line of the mounting frame.

[0017] Furthermore, each spring damping assembly also includes a guide mechanism, which includes a baffle and a guide rod. The bottom end of the baffle is rotatably connected to the cable fixing shaft, the guide rod is fixed to the top end of the baffle, and the free end of the cable passes through the baffle and extends out of the guide mechanism via the guide rod.

[0018] Furthermore, each guide mechanism also includes a clamping block fixed on the cable, and the clamping block is arranged close to the cable fixing axis and is located outside the baffle.

[0019] Furthermore, each spring damping assembly also includes a coil spring mounting housing, a cable fixing shaft housing and a pre-tightening device.

[0020] The first-stage mainspring spring and the second-stage mainspring spring are both located in the coil spring mounting housing, and the inner hook of the first-stage mainspring spring is fixed to the first-stage mainspring spring shaft, and the outer hook is fixed to the coil spring mounting housing, and when the coil spring mounting housing is rotated, the outer hook and the inner hook of the first-stage mainspring shaft rotate relative to each other;

[0021] The cable fixing shaft is rotated and located in the cable fixing shaft housing;

[0022] The pre-tensioning device comprises a first pre-tensioning unit arranged on a coil spring installation housing and a second pre-tensioning unit arranged on a cable fixing shaft housing and capable of being locked in cooperation with the first pre-tensioning unit.

[0023] Compared with the prior art, the present invention cleverly sets up a spring damping structure that can switch the spring stiffness coefficient, matches different spring stiffness coefficients to loads of different masses, and uses the spring damping structure and the sliding device to form a phase difference and displacement difference between the vibration of the backpack and the vibration of the human body, thereby achieving the purpose of reducing the load and generating electricity, and has multiple functional modes; the structure is innovative, the layout is compact, the weight is light, the cost is low, and the processing is convenient, which effectively alleviates the high load burden of field operations and solves the problem of power endurance in the field. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a schematic diagram of the overall structure of the load reduction mode and the power generation mode of an embodiment of the present invention.

[0025] Figure 2 It is a schematic diagram of the overall structure of the common mode of an embodiment of the present invention.

[0026] Figure 3 Schematic diagram of the spring damping system according to the embodiment of the present invention.

[0027] Figure 4 It is a schematic diagram of the internal structure of the spring damping system of an embodiment of the present invention.

[0028] In the figure: 1-shoulder strap; 2-upper terminal buckle of shoulder strap; 3-pull cable female buckle; 4-upper half female buckle of backpack; 5-backboard; 6-lower terminal buckle of shoulder strap; 7-backboard female buckle; 8-lower half female buckle of backpack; 9-backpack; 10-sliding device; 11-guide rod; 12-baffle; 13-second-stage latch; 14-first-stage latch; 15-pretensioning device; 16-mounting frame; 17-pull cable; 18-mounting buckle; 19-second-stage spring; 20-first-stage spring; 21-pull cable fixing shaft; 22-generator; 23-first-stage spring shaft; 24-second-stage spring shaft; 25-motor input shaft; 26-pull cable fixing shaft housing; 27-winding spring mounting housing; 28-block. DETAILED DESCRIPTION

[0029] The present invention will be further described below with reference to specific embodiments, but is not limited thereto.

[0030] The backpack device provided in this example has the ability to reduce dynamic loads and capture energy, and uses the phase difference and relative displacement between the human body and the backpack oscillation system to reduce the dynamic load pressure exerted on the human shoulders by the backpack's heavy objects and to collect motion energy. When the human body is walking, the weight of the heavy object is applied to the human shoulders through the shoulder straps. The heavy object and the spring damping system form an oscillation system, and move up and down with the movement of the excitation source human body. When the frequency ratio and damping ratio of the oscillation system reach a suitable ratio, it can reduce the dynamic load pressure on the human shoulders, or maximize the efficiency of energy collection, thereby achieving the purpose of reducing the burden on the human body and maintaining power endurance. The backpack device provided in this embodiment has multiple working modes, including normal mode, load reduction mode and power generation mode.

[0031] See also Figure 1-Figure 4 As shown, the present embodiment provides a backpack device with dynamic load reduction and energy capture capabilities, including a backpack 9 with a hollow back, a backboard 5 fixed to the back of the backpack 9, a sliding device 10 fixed between the back of the backpack 9 and the backboard 5, a shoulder strap 1, and a spring damping mechanism arranged in the backpack 9.

[0032] The upper and lower ends of the back of the backpack 9 are respectively provided with fixing parts that can be fixed to the upper and lower ends of the shoulder strap 1. In this embodiment, the fixing parts include an upper backpack female buckle 4 provided at the upper end of the back of the backpack and a lower backpack female buckle 8 fixedly provided at the lower end of the back of the backpack, and the upper end of the shoulder strap 1 is provided with an upper shoulder strap terminal buckle 2, and the lower end is provided with a lower shoulder strap terminal buckle 6.

[0033] The backpack 9 is provided with a spring damping connector, and the upper end of the shoulder strap 1 can be fixedly connected to one end of the spring damping connector. In this embodiment, the spring damping connector includes a cable buckle 3, and the cable buckle 3 is fixed to the free end of the cable in the spring damping mechanism located outside the backpack, and the other end of the cable 17 is located inside the backpack. The cable 17 in this embodiment is a cable.

[0034] The back plate 5 is arranged on the back side of the backpack 9, and the lower part of the back plate 5 is provided with a back plate female buckle 7 which can be connected with the lower terminal buckle 6 of the shoulder strap.

[0035] When the backpack device provided in this embodiment is in normal mode, the upper terminal buckle 2 of the shoulder strap is connected to the female buckle 4 of the upper half of the backpack, and the lower terminal buckle 6 of the shoulder strap is connected to the female buckle 8 of the lower half of the backpack. When in the load-reducing or power-generating mode, the lower terminal buckle 6 of the shoulder strap is connected to the backboard female buckle 7, the upper terminal buckle 2 of the shoulder strap is connected to the cable female buckle 3, and the other end of the cable passes through the backpack and is connected to the spring damping mechanism set inside the backpack. By controlling the connection inside the spring damping structure, the backpack is switched to the load-reducing mode or the power-generating mode. In the load-reducing mode, the sliding device and the spring damping mechanism make the vibration of the backpack weight form a phase difference with the vibration of the human body to reduce the dynamic load of the weight borne by the human body trunk; in the power-generating mode, the sliding device and the spring damping mechanism make the vibration of the backpack weight form a relative displacement with the vibration of the human body, and the relative displacement is amplified by the mechanical accelerator and input into the generator, thereby capturing the energy of the human body and converting it into electrical energy. Multiple modes are switched manually or electrically.

[0036] In this embodiment, a plurality of ventilation holes are arranged on the back plate 5, which is beneficial to the heat dissipation and ventilation of the back of the user during long-term use, and the curved surface of the back plate 5 corresponds to the curved surface of the back of the human body, which has good fit and can improve the comfort of the human body wearing the device. The back plate 5 is sewn, riveted or zipped around to form a closed space with the connected backpack, protecting the contact between the sliding device 10 and the back plate, forming a closed structure.

[0037] In this embodiment, the sliding device 10 includes a plurality of universal wheels, and the rollers of all the universal wheels are arranged on the same plane. The sliding device makes surface contact with the back plate 5 during movement, converting the sliding friction between the backpack and the back of the human body into rolling friction between the sliding device 10 and the back plate 5, thereby improving the energy collection efficiency of the device.

[0038] The spring damping mechanism includes a mounting frame 16 and two spring damping assemblies, each of which includes a cable 17, a cable fixing shaft 21, a first-stage spring 20, a second-stage spring 19, a first-stage latch 14, a second-stage latch 13, a generator 22 with a speed increasing mechanism, a guide mechanism and a buckle pre-tightening device 15. The housing of the generator 22 is fixed to the mounting frame 16 by means of a mounting buckle 18. One end of the cable 17 is fixed to the cable fixing shaft 21, and the other end can pass through the backpack 9 and be fixedly connected to the terminal buckle 2 on the shoulder strap of the shoulder strap through the cable female buckle 3. The cable 17 connects the entire backpack load to the spring damping mechanism. The cable 17 uses nylon fiber material, which can improve the strength and service life of the device.

[0039] The guide mechanism includes a baffle 12 and two guide rods 11. The bottom end of the baffle 12 is rotatably connected to the cable fixing shaft housing 26 through a pin and a dowel, so that the guide mechanism can rotate. Two guide rods 11 are arranged at the top of the baffle 12. The cable 17 passes through the baffle 12 from the bottom and then passes through the guide mechanism from the gap between the two guide rods 11. In this embodiment, the cross-section of the baffle 12 is a frame-shaped, allowing the cable 17 to pass through, and the guide rod 11 is a pin and a dowel. The cylindrical surface of the guide rod 11 serves as the contact surface between the cable 17 and the device, converting the sliding friction between the cable 17 and the device into rolling friction, thereby improving the efficiency of energy capture and the service life of the device. The baffle 12 protects the exposed part of the cable 17 to avoid interference with objects in the backpack, thereby improving the robustness and stability of the backpack device.

[0040] The guide mechanism also includes a block 28, which is fixed to the cable 17 by bolts. The relative position of the block 28 to the cable 17 remains unchanged during the extension and retraction of the cable 17. The block 28 is located outside the baffle 12. The effective space at the end of the baffle 12 is reduced, which can prevent the block 28 from entering the baffle 12, so as to lock the cable 17 in one direction and prevent the cable 17 from being completely rolled into the cable fixing shaft. And because the baffle 12 can lock the cable in one direction, the minimum length value of the cable 17 can be fixed.

[0041] Specifically, both ends of the cable fixing shaft 21 are connected to the cable fixing shaft housing 26 through bearings, and the first-stage spring shaft 23 is coaxially installed with the cable fixing shaft 21 and fixed by bolts. When the cable fixing shaft 21 rotates, the first-stage spring shaft 23 is driven to rotate and transmit power. The cable fixing shaft 21 is a hollow shaft, and the motor input shaft 25 passes through the inside of the cable fixing shaft 21, and there is no interference between the two. The first-stage spring shaft 23 is a hollow shaft, and the inner diameter of the first-stage spring shaft 23 is larger than the outer diameter of the motor input shaft 25, which allows the motor input shaft 25 to be inserted into the first-stage spring shaft 23, and the two are connected by bearings. A pin hole for inserting the first-stage plug 14 is reserved at the end of the motor input shaft 25, and a pin hole for inserting the first-stage plug 14 is provided on the first-stage spring shaft 23. The motor input shaft 25 and the first-stage spring shaft 23 can be connected and transmit power by inserting the first-stage plug 14. When the first-stage plug 14 is not inserted, due to the presence of the bearing, the first-stage spring shaft 23 does not drive the motor input shaft 25 to rotate, and the two are in a separated state. When the first-stage plug 14 is inserted, the first-stage spring shaft 23 drives the motor input shaft 25 to rotate and inputs speed to the generator 22. Similarly, the second-stage spring shaft 24 is a hollow shaft, and the inner diameter of the second-stage spring shaft 24 is larger than the outer diameter of the first-stage spring shaft 23, allowing the first-stage spring shaft 23 to be inserted into the second-stage spring shaft 24, and the two are connected by a bearing. A pin hole for the second-stage plug 13 to be inserted is reserved at the end of the first-stage spring shaft 23, and a pin hole for the second-stage plug 13 to be inserted is also reserved on the second-stage spring shaft 24. The first-stage spring shaft 23 and the second-stage spring shaft 24 can be connected and transmit power by inserting the second-stage plug 13. When the second-stage plug 13 is not inserted, due to the presence of the bearing, the first-stage spring shaft 23 does not drive the second-stage spring shaft 24 to rotate, and the two are in a separated state. When the second-stage plug 13 is inserted, the first-stage spring shaft 23 drives the second-stage spring shaft 24 to rotate. In the load-reducing state, the first-stage plug 14 is not inserted, the motor input shaft 25 is separated from the first-stage spring shaft 23, and the generator is not working. When the second-stage plug 13 is not inserted, it is the first-stage spring stiffness coefficient. When the second-stage plug 13 is inserted, the two springs are connected in parallel, which is the second-stage spring stiffness coefficient. In the power generation state, the first-stage plug 14 is inserted, and the first-stage spring shaft 23 transmits power to the motor input shaft 22 through the first-stage plug 14. The generator is in a working state. When the second-stage plug 13 is not inserted, it is the first-stage spring stiffness coefficient. When the second-stage plug 13 is inserted, the two springs are connected in parallel, which is the second-stage spring stiffness coefficient. When the backpack device is in the normal mode, the spring damping mechanism can be disassembled by disassembling the mounting buckle 18 .

[0042] The pre-tensioning device can adjust the output torque of the clockwork spring, thereby adjusting the initial position of the backpack on the back of the human body, improving the energy collection efficiency of the system and maintaining the stability of the human body's gait. The pre-tensioning device 15 includes a first pre-tensioning unit arranged on the coil spring mounting housing 27 and a second pre-tensioning unit arranged on the cable fixing shaft housing 26 and can be locked with the first pre-tensioning unit. The pre-tensioning device 15 in this embodiment is a buckle pre-tensioning device. The first pre-tensioning unit is a sub-buckle group including a plurality of sub-buckles, and the plurality of sub-buckles are arranged circumferentially and mounted on the coil spring mounting housing 27. The second pre-tensioning unit is a female buckle group including a plurality of female buckles, and the plurality of female buckles are arranged circumferentially and mounted on the cable fixing shaft housing 26, and each female buckle can be locked with a corresponding sub-buckle. When the sub-buckle and the female buckle are in a locked state, the sub-buckle and the female buckle can be regarded as the same rigid body; when the sub-buckle and the female buckle are in a separated state, the sub-buckle and the female buckle can move freely. The coil spring installation housing 27 is coaxially installed with the cable fixing shaft housing 26, and the inner diameter of the coil spring installation housing 27 is in a clearance fit relationship with the outer diameter of the cable fixing shaft housing 26. When the sub-buckle on the coil spring installation housing 27 and the female buckle on the cable fixing shaft housing 26 are in a locked state, the coil spring installation housing 27 and the cable fixing shaft 26 are regarded as the same rigid body, and when the sub-buckle on the coil spring installation housing 27 and the female buckle on the cable fixing shaft housing 26 are in a separated state, the coil spring installation housing 27 can rotate freely relative to the cable fixing shaft housing 26.

[0043] The baffle 12 has the function of locking the initial position of the cable 17 in one direction, so that the minimum length value of the cable 17 is fixed. The first-stage spring 20 and the second-stage spring are both located in the coil spring mounting housing 27, the inner hook of the first-stage spring 20 hooks the first-stage spring shaft 23, and the outer hook is fixed to the coil spring mounting housing 27, and the inner hook of the second-stage spring hooks the second-stage spring shaft 24, and the outer hook is fixed to the coil spring mounting housing 27. During pre-tightening, when the sub-buckle and the mother buckle of the pre-tightening device 15 are in a separated state, the outer hook of the first-stage clockwork spring 20 can be driven to rotate by the rotation of the coil spring mounting housing 27; and the initial position of the cable 17 is fixed in one direction, which is equivalent to the first-stage clockwork spring shaft 23 being locked in one direction, and the inner hook of the first-stage clockwork spring 20 is locked, and the pre-tightening force is input into the first-stage clockwork spring 20 through the relative rotation of the outer hook and the inner hook of the first-stage clockwork spring 20, and then the sub-buckle and the mother buckle of the pre-tightening device 15 are switched to a locked state, and the relative positions of the outer hook and the inner hook of the first-stage clockwork spring 20 are fixed. When the second-stage latch 13 is not inserted, the first-stage clockwork spring shaft 23 does not transmit torque to the second-stage clockwork spring shaft 24. Since the first-stage clockwork spring shaft 23 and the second-stage clockwork spring shaft 24 are connected by bearings, the first-stage clockwork spring shaft 23 is in a one-way locking state and the second-stage clockwork spring shaft 24 can rotate freely. There is no parallel relationship between the first-stage clockwork spring 20 and the second-stage clockwork spring 19. When pre-tightened, the inner and outer hooks of the first-stage clockwork spring 20 produce relative rotation, while the inner and outer hooks of the second-stage clockwork spring 19 rotate at the same time, and no relative rotation occurs; when the second-stage latch 13 is inserted, the first-stage clockwork spring shaft 23 transmits torque to the second-stage clockwork spring shaft 24, and the first-stage clockwork spring 20 and the second-stage clockwork spring 19 are in a parallel relationship. When pre-tightened, the first-stage clockwork spring 20 and the second-stage clockwork spring 19 are pre-tightened at the same time. By pre-tightening, the output torque of the clockwork spring can be adjusted, thereby adjusting the initial position of the backpack 9 on the back of the human body, improving the energy collection efficiency of the system and maintaining the stability of the human body's gait.

[0044] Both spring damping assemblies are fixed to the mounting frame 16 by mounting buckles 18. The mounting frame of this embodiment is a U-shaped tube. The two spring damping assemblies are installed symmetrically about the center line of the U-shaped tube 16 and are coaxially arranged so that the speed of the cable 17 input into the spring damping mechanism can be roughly the same and the load is evenly distributed on the shoulders.

[0045] The present invention cleverly arranges a spring damping structure capable of switching spring stiffness coefficients, matches different spring stiffness coefficients to loads of different masses, utilizes the spring damping structure and the sliding device to make the vibration of the backpack and the vibration of the human body form a phase difference and a displacement difference, thereby achieving the purpose of reducing the load and generating electricity, and has multiple functional modes.

[0046] The principle of dynamic load reduction in this scheme is to add a spring damping mechanism to the backpack to change the displacement phase of the backpack within the cycle, thereby staggering the resonance phase with the vibration of the human body. Adjusting the appropriate parameters of the spring damping mechanism can make the vibration peak of the human body correspond to the vibration trough of the backpack load. The superposition of the two can offset most of the acceleration and relative displacement between the backpack and the human body, thereby reducing the dynamic force exerted on the human body by the backpack load and reducing the burden of the human body carrying heavy objects. The principle of energy capture is to add a spring damping mechanism to the backpack to stagger the vertical displacement phase of the human body and the backpack during movement, causing the relative vibration of the weight in the backpack and the center of mass of the human body, thereby converting the relative sliding displacement into the rotational displacement of the cable fixed shaft. The cable fixed shaft inputs speed and power to the generator input shaft through the pin, driving the generator to rotate, and charging the battery and equipment. For soldiers and field workers who travel or perform tasks under complex working conditions, reducing the size and weight of the backpack is the primary task. In this case, it is necessary to promptly adjust the functional smart backpack to an ordinary backpack, quickly disassemble the existing structural device into a modular form, and discard it on the spot or place it inside the backpack for easy installation and use next time. Therefore, a third ordinary backpack mode is equipped, which is different from the above two modes to meet the personalized needs of soldiers and field workers under different working conditions.

[0047] According to the disclosure and teaching of the above description, those skilled in the art to which the present invention belongs may also change and modify the above implementation. Therefore, the present invention is not limited to the specific implementation disclosed and described above, and some modifications and changes to the present invention should also fall within the scope of protection of the claims of the present invention.

Claims

1. A backpack device with dynamic load reduction and energy capture capabilities, characterized in that: The backpack comprises a backpack (9), a shoulder strap (1), a spring damping mechanism, a back plate (5) and a sliding device (10). The backpack (9) is provided with a spring damping connection piece; The upper end of the shoulder strap (1) can be fixedly connected to one end of the spring damping connector; The back plate (5) is arranged on the back of the backpack (9), and the back plate (5) can be fixedly connected to the lower end of the shoulder strap (1); The sliding device (10) is slidably arranged between the backpack (9) and the backboard (5); The spring damping mechanism is arranged inside the backpack (9), and comprises a mounting frame (16) and two spring damping assemblies fixedly arranged on the mounting frame, each of the spring damping assemblies comprising a generator (22) with a speed increasing mechanism, a cable fixing shaft (21), a cable (17), a first-stage spring spring (20), a second-stage spring spring (19), a first-stage latch (14), a second-stage latch (13), a first-stage spring shaft (23) and a second-stage spring shaft (24), the generator (22) being fixed on the mounting frame (16), the second-stage spring shaft (24) and the first-stage spring shaft (23) being coaxially arranged and connectable to each other through The second-stage latch (13) transmits power. When the first-stage spring shaft (23) and the motor input shaft (25) transmit power through the first-stage latch (14) and the second-stage spring shaft (24) and the first-stage spring shaft (23) transmit power through the second-stage latch (13), the first-stage spring shaft (20) and the second-stage spring shaft (19) are connected in parallel. The first-stage spring shaft (23) and the zipper fixing shaft (21) are coaxially mounted and fixed by bolts. When the zipper fixing shaft (21) rotates, the first-stage spring shaft (23) is driven to rotate and transmit power. The zipper fixing shaft (21) is a hollow shaft. The motor input shaft (25) passes through the interior of the zipper fixing shaft (21), and there is no interference between the two.

2. A backpack device with dynamic load reduction and energy capture capabilities according to claim 1, characterized in that: The upper and lower ends of the back of the backpack (9) are also provided with fixing pieces respectively, and the two ends of the shoulder strap (1) can be fixedly connected to the two fixing pieces respectively.

3. A backpack device with dynamic load reduction and energy capture capabilities according to claim 1, characterized in that: The back plate (5) and the back side of the backpack (9) form a closed space, and the sliding device (10) is arranged in the closed space.

4. A backpack device with dynamic load reduction and energy capture capabilities according to claim 1, characterized in that: The sliding device (10) comprises a plurality of universal wheels, and the rollers of each universal wheel are located on the same plane.

5. The backpack device with dynamic load reduction and energy capture capabilities according to claim 1, characterized in that: The back plate (5) is provided with ventilation holes.

6. A backpack device with dynamic load reduction and energy capture capabilities according to claim 1, characterized in that: The curved surface of the back plate (5) corresponds to the curved surface of the back of the human body.

7. A backpack device with dynamic load reduction and energy capture capabilities according to claim 1, characterized in that: The spring damping mechanism is fixed on the mounting frame (16) via a mounting buckle (18), and the two spring damping components are centrally symmetrical and coaxially arranged about the center line of the mounting frame (16).

8. The backpack device with dynamic load reduction and energy capture capabilities according to claim 1, characterized in that: Each spring damping assembly also includes a guide mechanism, which includes a baffle (12) and a guide rod (11). The bottom end of the baffle (12) is rotatably connected to the cable fixing shaft (21), and the guide rod (11) is fixed to the top end of the baffle (12). The free end of the cable (17) passes through the baffle (12) and extends out of the guide mechanism via the guide rod (11).

9. The backpack device with dynamic load reduction and energy capture capabilities according to claim 8, characterized in that: Each guide mechanism also includes a clamping block (28) fixed on the cable (17), wherein the clamping block (28) is arranged close to the cable fixing axis and is located outside the baffle (12).

10. The backpack device with dynamic load reduction and energy capture capabilities according to any one of claims 1 to 9, characterized in that: Each spring damping assembly also includes a coil spring mounting housing (27), a cable fixing shaft housing (26) and a pre-tensioning device (15). The first-stage spring (20) and the second-stage spring (19) are both located in a coil spring mounting housing (27), and the inner hook of the first-stage spring (20) is fixed to the first-stage spring shaft (23), and the outer hook is fixed to the coil spring mounting housing (27), and when the coil spring mounting housing (27) is rotated, the outer hook and the inner hook of the first-stage spring shaft (23) rotate relative to each other; The cable fixing shaft (21) is rotatably located in the cable fixing shaft housing (26); The pretensioning device (15) comprises a first pretensioning unit arranged on a coil spring mounting housing (27) and a second pretensioning unit arranged on a cable fixing shaft housing (26) and capable of being locked in cooperation with the first pretensioning unit.

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