A multifunctional dragging device for plateau transportation

Abstract

The present invention relates to the technical field of field first aid equipment, and specifically to a multifunctional dragging device for plateau transportation, which includes an adjustable side frame, a drag blanket, an air cushion system, a drag handle and an installation box, wherein the air cushion system includes a first air cushion and a second air cushion, which can be switched between a flat dragging mode and a bent-body carrying mode to adapt to complex terrain and reduce the burden on rescuers. The first air cushion contains a bow-shaped air cushion-type shoulder strap for auxiliary pressure bearing or as a shoulder strap; the second air cushion is the main pressure-bearing or auxiliary stabilizing air cushion, and has built-in rollers to improve dragging efficiency. The device is equipped with an adaptively adjustable head frame, middle straps, upper straps and lower straps to ensure that the wounded are fixed and comfortable. The present invention achieves the characteristics of efficient rescue, strong terrain adaptability, simple operation and comprehensive protection of the wounded, and is particularly suitable for emergency rescue tasks in harsh environments such as plateaus.

Description

Technical Field

[0001] The present invention relates to the technical field of field emergency equipment, and in particular to a multifunctional dragging device for plateau transportation. Background Art

[0002] The information disclosed in the background of the invention is only intended to enhance understanding of the overall background of the invention and should not necessarily be regarded as an admission or any form of suggestion that the information constitutes the prior art already known to a person skilled in the art.

[0003] In recent years, with the increase in infrastructure construction and military and scientific research activities in my country's plateau areas, the demand for multifunctional towing devices that can adapt to the special environment of the plateau has become increasingly urgent.

[0004] In plateau environments, the complex terrain, thin oxygen content, and harsh climate present enormous challenges in transporting supplies and rescuing personnel. Traditional manual and mechanical transport equipment is often inefficient at high altitudes, especially in emergencies where dispersed casualties are being transported, resulting in low adaptability and efficiency.

[0005] Although existing stretchers have undergone numerous improvements, they are still not suitable for single-person transport operations and are unsuitable for emergency transport during wartime. Furthermore, due to weight constraints, carrying a wounded person for extended periods during transport places a significant strain on medical personnel. Existing towing devices are also inadequate for handling complex terrain, lacking flexibility and adaptability, making them unsuitable for transport tasks in high-altitude environments. Therefore, there is an urgent need to develop an efficient, portable towing device suitable for emergency rescue and transport during wartime. Summary of the Invention

[0006] In view of the problems existing in the prior art, the purpose of the present invention is to provide a multifunctional towing device for plateau transportation that is efficient, easy to carry, highly adaptable and flexible.

[0007] In order to achieve the above purpose, the present invention adopts the following technical solutions:

[0008] A multifunctional dragging device for plateau transportation, comprising a frame body, on which a dragging blanket is mounted;

[0009] The frame body includes adjustable side frames on both sides, and a first bottom plate, a second bottom plate and a third bottom plate are installed between the adjustable side frames;

[0010] The adjustable side frame includes a first side bar, a second side bar, a third side bar, a first telescopic link and a second telescopic link, wherein the first side bar, the second side bar and the third side bar are hingedly connected, the first telescopic link has two ends hingedly connected to the first side bar and the second side bar respectively, and the second telescopic link has two ends hingedly connected to the second side bar and the third side bar respectively;

[0011] The first bottom plate, the second bottom plate and the third bottom plate are respectively mounted and fixed on the first side rod, the second side rod and the third side rod, corresponding to positions close to the head, buttocks and legs respectively;

[0012] The frame body can be adjusted to a flat dragging mode or a bent carrying mode by adjusting the length of the first telescopic link and the second telescopic link;

[0013] A first air cushion is fixed under the first bottom plate and the second bottom plate, and a second air cushion is fixed under the second bottom plate and the third bottom plate;

[0014] The first air cushion includes a first air cushion body and two bow-shaped air cushion-type shoulder straps, each of the bow-shaped air cushion-type shoulder straps is provided with a first roller, and the bow-shaped air cushion-type shoulder straps serve as shoulder straps and / or auxiliary pressure-bearing frames in a flat-lying dragging mode, and serve as main pressure-bearing shoulder straps in a bent-body carrying mode;

[0015] The second air cushion includes a second air cushion body, the second air cushion body is provided with a second roller, and the second air cushion body serves as a main pressure-bearing frame in the flat-lying dragging mode and as an auxiliary stabilizing air cushion in the curved body carrying mode;

[0016] A drag handle is provided at one end of the frame body, and an installation box is provided at the other end. The installation box is used to install the battery assembly and the inflation device, and is also used for the foot pedal and to limit the injured person's feet;

[0017] An adaptively adjustable headrest is installed on the first base plate, a middle strap for fixing the hips is installed on the second base plate and the corresponding second side rods on both sides thereof, and an upper strap and a lower strap for fixing the upper torso and the lower torso are installed on the first side rod and the third side rod respectively.

[0018] Preferably, the bow-shaped air cushion type harness comprises a harness body, an air cavity is provided in the harness body, and an inflation port is provided in the air cavity;

[0019] The strap body is provided with an anti-wear layer near the outer side, and a cushion layer is provided at the inner side where it meets the shoulder;

[0020] The first air cushion body is provided with an air cavity communicating with the strap body, and the second air cushion body is provided with an air cavity communicating with or independent of the first air cushion body;

[0021] The first air cushion body and the second air cushion body are both provided with an anti-wear layer near the outer side;

[0022] The first roller and the second roller are installed through a first installation shaft and a second installation shaft respectively, and the first installation shaft and the second installation shaft are respectively integrally formed in the shoulder strap body and the second air cushion body.

[0023] Preferably, the self-adaptive head frame comprises a base, an outer head frame is provided on the base, an inner head frame is installed inside the outer head frame, and the inner head frame is movably installed inside the outer head frame in the left and right directions;

[0024] Guide shafts are provided on the outside of both sides of the inner head frame, guide holes adapted to the guide shafts are opened on both sides of the outer head frame, and a first spring is sleeved on the guide shafts between the outer head frame and the inner head frame;

[0025] The two sides of the base are slidably mounted on the slide bar in the up and down directions, and the two ends of the slide bar are sleeved with a second spring.

[0026] Preferably, a silicone cushion is provided on the inner side of the inner head frame;

[0027] A protective sleeve for the movement of the guide shaft is installed on the outside of the outer head frame, and the protective sleeve is snap-fitted and installed on the outside of the outer head frame.

[0028] Preferably, the drag blanket is an electric blanket, which is electrically connected to the power supply assembly and is powered by the power supply assembly.

[0029] Preferably, the inflation device includes an air pump or an automatic inflation component, and the automatic inflation component includes an air pump, an air pipe and an inflation connector thereof, and the inflation connector is adapted to the inflation port.

[0030] Preferably, a foldable roof is provided above the frame body, the foldable roof comprises a foldable frame and a tent, and the foldable frame comprises a fixing seat fixedly mounted on the first bottom plate or the first telescopic connecting rod.

[0031] Preferably, the first base plate, the second base plate, the third base plate and the other end of the foldable frame are respectively connected to the corresponding first telescopic link, the second telescopic link and the third telescopic link through corresponding locking ring assemblies.

[0032] Preferably, the first telescopic link and the second telescopic link each include a corresponding fixed rod portion and a rotating rod portion, the rotating rod portion includes a sleeve and an inner core end portion, the inner core end portion can be rotatably inserted into the sleeve and limited by a limiting portion provided at one end of the inner core end portion, and the other end of the sleeve is sleeved into the fixed rod portion and threadedly connected thereto.

[0033] Preferably, the first air cushion and the second air cushion are fixed to the corresponding first bottom plate, the second bottom plate and the third bottom plate by screw fasteners, or are fixed to the corresponding first side rod, the second side rod and the third side rod by lock buckles;

[0034] A plurality of locking ring assemblies are provided on the first side bar, the second side bar and the third side bar;

[0035] The bottom of the second air cushion body is a curved bottom.

[0036] The present invention includes but is not limited to the following beneficial effects:

[0037] The present invention is designed as a single-person rescue system, which greatly improves the response speed and efficiency in emergency situations, especially in high-altitude environments with limited resources.

[0038] The adjustable frame structure of the present invention works in synergy with the role switching of the first air cushion and the second air cushion, allowing the device to switch to a flat-lying drag mode or a bent-body carrying mode according to the different conditions of the injured and the geographical environment, thereby realizing multi-functional, multi-mode operation and switching, and enhancing the flexibility of the device and its adaptability to terrain conditions.

[0039] The first air cushion and the second air cushion and their inflation design in the present invention have natural anti-collision performance and shock absorption performance. Combined with the structural characteristics of the bow and curved surface, the anti-collision performance and shock absorption performance are further improved, reducing the impact force that may be generated when moving in rugged terrain, protecting the safety of the injured, and helping to maintain the overall stability and reliability of the device during dragging. Moreover, it is light in weight and can realize two different working modes of carrying and operation by inflation and deflation. It is simple to operate and has strong portability, adaptability and flexibility. The combination of the anti-wear layer and the soft cushion layer improves the durability of the device and the comfort of the rescuer, ensuring the reliability and efficiency of long-term use.

[0040] The design of the adaptively adjustable headrest in the present invention takes into account the differences in head sizes of different injured persons, and at the same time has a shock-absorbing function to protect the injured person's head from secondary injury.

[0041] The frame body of the present invention adopts a detachable and foldable structure, and the bow-shaped air cushion shoulder strap and the air cushion frame work together to make the device easy to store, reduce the burden of carrying, and make it suitable for use in different emergency rescue scenarios in complex terrains such as plateaus. BRIEF DESCRIPTION OF THE DRAWINGS

[0042] Figure 1 This is a schematic diagram of the overall structure of the flat drag mode of the present invention Figure 1 ;

[0043] Figure 2 The overall structure of the curved body carrying mode of the present invention is shown as follows Figure 1 ;

[0044] Figure 3 The overall structure of the curved body carrying mode of the present invention is shown as follows Figure 2 ;

[0045] Figure 4 Schematic diagram of the cross-sectional structure of the bow-shaped air cushion harness of the present invention;

[0046] Figure 5 for Figure 2 A in the middle is an enlarged structural diagram;

[0047] Figure 6 This is a schematic diagram of the overall structure of the flat drag mode of the present invention Figure 2 ;

[0048] Figure 7 The overall structure of the curved body carrying mode of the present invention is shown as follows Figure 3 ;

[0049] Figure 8 It is a structural schematic diagram of the telescopic connecting rod in the present invention.

[0050] The reference numerals are as follows:

[0051] 1. First base plate; 2. Second base plate; 3. Third base plate; 4. First side bar; 5. Second side bar; 6. Third side bar; 7. First telescopic link; 71. Rotating rod; 711. Sleeve; 712. End of inner core; 713. Position limiter; 72. Fixed rod; 8. Second telescopic link; 9. Self-adaptive head frame; 91. Base; 92. Sliding rod; 93. Second spring; 94. Outer head frame; 95. Inner head frame; 96. Guide shaft; 97. First spring; 98 , protective cover; 10. Drag handle; 11. Installation box; 12. Bow-shaped air cushion shoulder strap; 120. Strap body; 121. First roller; 122. Air cavity; 123. Anti-wear layer; 124. Cushion layer; 125. First installation axis; 13. Second air cushion body; 131. Second roller; 14. Drag blanket; 15. Upper strap; 16. Middle strap; 17. Lower strap; 18. Lock; 19. Foldable roof; 191. Foldable frame; 192. Fixed seat. DETAILED DESCRIPTION

[0052] The present invention will be further described below with reference to specific embodiments and accompanying drawings.

[0053] Figures 1 to 8 A multifunctional dragging device for plateau transportation is presented, comprising a frame body, on which a dragging blanket 14 is mounted;

[0054] The frame body includes adjustable side frames on both sides, and a first base plate 1, a second base plate 2, and a third base plate 3 are installed between the adjustable side frames. There are many specific installation methods, such as using threaded fixings. However, in this embodiment, a buckle or lock 18 is used for connection, and a buckle or lock 18 with a self-locking function is used. While the installation is stable and reliable, it is easy to disassemble and assemble, easy to carry, and is conducive to its transportation in plateau environments and carrying in non-emergency situations;

[0055] The adjustable side frame includes a first side rod 4, a second side rod 5, a third side rod 6, a first telescopic link 7 and a second telescopic link 8. The first side rod 4, the second side rod 5 and the third side rod 6 are hingedly connected. The two ends of the first telescopic link 7 are respectively hingedly connected to the first side rod 4 and the second side rod 5. The two ends of the second telescopic link 8 are respectively hingedly connected to the second side rod 5 and the third side rod 6.

[0056] The first bottom plate 1, the second bottom plate 2 and the third bottom plate 3 are respectively mounted and fixed on the first side rod 4, the second side rod 5 and the third side rod 6, corresponding to the positions close to the head, buttocks and legs respectively;

[0057] By adjusting the length of the first telescopic link 7 and the second telescopic link 8, the frame body can be adjusted to a flat dragging mode and a bent body carrying mode; the flat dragging mode and the bent body carrying mode can respectively correspond to different conditions of different wounded people and different transport modes that can be adopted in different geographical environments;

[0058] A first air cushion is fixed under the first bottom plate 1 and the second bottom plate 2, and a second air cushion is fixed under the second bottom plate 2 and the third bottom plate 3;

[0059] Specifically, the first air cushion and the second air cushion are fixed to the corresponding first bottom plate 1, second bottom plate 2 and third bottom plate 3 by screw fasteners, or fixed to the corresponding first side rod 4, second side rod 5 and third side rod 6 by lock buckles 18;

[0060] Accordingly, a number of required locking ring assemblies are provided on the first side bar 4, the second side bar 5 and the third side bar 6;

[0061] The first air cushion includes a first air cushion body and two bow-shaped air cushion-type shoulder straps 12, each of which is provided with a first roller 121. The bow-shaped air cushion-type shoulder straps 12 serve as shoulder straps and / or auxiliary pressure-bearing frames in a flat-lying dragging mode, and serve as main pressure-bearing shoulder straps in a bent-body carrying mode.

[0062] The second air cushion includes a second air cushion body 13, which is provided with a second roller 131. The second air cushion body 13 serves as a main pressure-bearing frame in the flat-lying dragging mode and as an auxiliary stabilizing air cushion in the bent-body carrying mode.

[0063] A drag handle 10 is provided at one end of the frame body, and an installation box 11 is provided at the other end. The installation box 11 is used to install the battery assembly and the inflation device, and is also used as a foot pedal and to limit the injured person's feet;

[0064] An adaptively adjustable head frame 9 is installed on the first base plate 1, and the second base plate 2 and the corresponding second side rods 5 on both sides are installed with middle straps 16 for fixing the buttocks. The middle straps 16 extend from the inner sides of the thighs and are fixed to both sides to achieve the limiting and fixation of the buttocks. The first side rods 4 and the third side rods 6 are respectively installed with upper straps 15 and lower straps 17 for fixing the upper torso and lower torso.

[0065] This device is suitable for single-person rescue, and emergency dragging rescue can be completed by only one rescuer.

[0066] In the lying-flat dragging mode, the injured person lies flat on the dragging device, which may include two situations. One is that the rescuer drags the injured person through the dragging handle 10. At this time, the dragging device is close to a horizontal state. The inflated bow-shaped air-cushioned shoulder strap 12 acts as an auxiliary pressure-bearing frame, which plays an auxiliary pressure-bearing role. The second air cushion acts as the main pressure-bearing frame, which bears the main load-bearing capacity, and the corresponding terrain conditions are relatively flat. The second is that the rescuer carries the injured person on his shoulders through the bow-shaped air-cushioned shoulder strap 12, adopting a shoulder-type dragging method with better stability. At this time, the bow-shaped air-cushioned shoulder strap 12 serves as a shoulder strap, and the second air cushion still acts as the main pressure-bearing frame. The corresponding terrain conditions are relatively poor, such as unevenness and ups and downs.

[0067] In the curved carrying mode, the injured person is sitting on the towing device. At this time, the first base plate 1 and the third base plate 3 are in a state close to a vertical state, and the second base plate 2 is in a state close to a horizontal state. Specifically, the injured person is sitting on the second floor with his back against the first base plate 1, and the whole state is in a torso state. At this time, the first telescopic link 7 is arranged in an inclined state on both sides of the frame body, which can act as an armrest, which is conducive to limiting the position of the injured person and stabilizing the injured person by himself; the rescuer carries the towing device and the injured person completely on his shoulders. At this time, the towing device and the injured person are off the ground, the bow-shaped air cushion type shoulder strap 12 serves as the main pressure-bearing shoulder strap, and the second air cushion serves as an auxiliary stabilizing air cushion to prevent the injured person and the device body from forming a large torque due to gravity and impact force, thereby adversely affecting the stability of the injured person, and causing damage or breakage to the device as a whole. The corresponding adapted terrain conditions are relatively complex terrains, such as climbing over obstacles or wading.

[0068] The bow-shaped air cushion type harness 12 includes a harness body 120 , an air cavity 122 is provided in the harness body 120 , and the air cavity 122 is provided with an inflation port;

[0069] The strap body 120 is provided with an anti-wear layer 123 near the outer side, and a cushion layer 124 is provided on the inner side where it meets the shoulder;

[0070] The first air cushion body is provided with an air cavity 122 communicating with the shoulder strap body 120, and the second air cushion body 13 is provided with an air cavity 122 communicating with the first air cushion body or being independent of the first air cushion body. The bottom of the second air cushion body 13 is a curved bottom.

[0071] The air cushion bodies of the first and second air cushions can both be made of rubber or other qualified polymer materials. After being inflated, they can serve as the support frame or load-bearing body of the device. At the same time, they both have natural anti-collision and shock-absorbing properties. Combined with the structural characteristics of the bow and curved surface, the anti-collision and shock-absorbing properties are further improved, which is conducive to maintaining the overall stability and reliability of the device during dragging. Moreover, they are light in weight and can realize two different working modes, namely carrying and operation, by inflating and deflating. They are simple to operate and have strong portability, adaptability and flexibility.

[0072] The inflation and deflation mechanism of the first air cushion and the second air cushion, as well as the conversion of roles in different modes, demonstrate the flexibility, versatility and portability of the design; the use of the bow-shaped air cushion harness 12 and the second air cushion provides good pressure distribution, reduces the physical burden on rescuers and the injured, and increases comfort.

[0073] The first air cushion body and the second air cushion body 13 are both provided with an anti-wear layer 123 near the outside; the function of the anti-wear layer 123 is to prevent friction damage caused by the ground or obstacles, and the soft cushion layer 124 is to better fit the shoulders and improve the comfort of the rescuer when carrying the rescuer. Combined with the first roller 121 and the second roller 131, the overall efficiency of the dragging device is higher, thereby improving the rescue efficiency.

[0074] The first and second rollers 121, 131 are mounted via first and second mounting shafts, respectively, which are integrally formed within the harness body 120 and the second air cushion body 13. Due to the harsh terrain conditions, the stress on the mounting shafts varies significantly during towing operations. This integrated arrangement ensures a more stable and reliable mounting of the first and second rollers 121, 131, thereby enhancing the overall strength and stability of the device.

[0075] The inflation device includes an air pump or an automatic inflation assembly, which includes an air pump, an air tube, and an inflation connector. The inflation connector is adapted to the inflation port, and the air pump can be powered by the battery assembly. This allows the device to be operated in both manual and automatic inflation modes, corresponding to non-emergency and emergency conditions, respectively. Manual inflation serves as a backup in the event of a malfunction of the automatic inflation assembly, resulting in a higher overall fault tolerance and improved reliability.

[0076] The self-adaptive head frame 9 includes a base 91, an outer head frame 94 is provided on the base 91, an inner head frame 95 is installed inside the outer head frame 94, and the inner head frame 95 is movably installed inside the outer head frame 94 in the left and right directions;

[0077] Guide shafts 96 are provided on the outside of both sides of the inner head frame 95, and guide holes adapted to the guide shafts 96 are opened on both sides of the outer head frame 94. A first spring 97 is sleeved on the guide shafts 96 between the outer head frame 94 and the inner head frame 95;

[0078] Both sides of the base 91 are slidably mounted on a slide bar 92 in the up-down direction, and both ends of the slide bar 92 are sleeved with a second spring 93 .

[0079] The self-adaptive adjustment head frame 9 is to cope with the different sizes of the injured person's head, and at the same time play the role of self-adaptive shock absorption and timely adjustment, so as to avoid impact, collision or sprain of the injured person's head or neck during the dragging operation.

[0080] In order to further play a protective role, a silicone cushion is provided on the inner side of the inner head frame 95;

[0081] A protective sleeve 98 is installed on the outside of the outer head frame 94 to allow the guide shaft 96 to move. The protective sleeve 98 is snap-fitted and installed on the outside of the outer head frame 94 .

[0082] Due to the relatively cold climate of the plateau, warming measures are required to assist patients who have suffered excessive blood loss or shock. The drag blanket 14 is an electric heating blanket that provides warmth to the patient. The electric heating blanket is electrically connected to the power supply assembly and is powered by the power supply assembly. The electric heating function of the drag blanket 14 provides the necessary warmth for the patient, which is crucial for preventing hypothermia in low-temperature environments.

[0083] To better insulate, a retractable canopy 19 is installed above the main frame. This canopy 19 comprises a foldable frame 191 and a tent. The foldable frame 191 includes a mounting base 192 fixedly mounted on the first base plate 1 or the first telescopic link 7. During use, the free end of the retractable canopy 19 is pulled downward, and then its latch 18 is secured to the rear end of the main frame. This provides insulation while also protecting against wind, sand, sun, and rain, making it suitable for the changing climate of the plateau and enhancing the device's versatility and environmental adaptability.

[0084] The other ends of the first base plate 1, the second base plate 2, the third base plate 3 and the foldable frame 191 are respectively connected to the corresponding first telescopic link 7, the second telescopic link 8 and the third telescopic link through corresponding locking ring assembly buckles or locks 18, which not only fix the installation but also facilitate disassembly, storage and carrying.

[0085] The structure of the telescopic link (i.e., the first telescopic link 7 and the second telescopic link 8) is specifically as follows: it includes a corresponding fixed rod portion 72 and a rotating rod portion 71, the rotating rod portion 71 includes a sleeve 711 and an inner core end portion 712, the inner core end portion 712 can be rotatably inserted into the sleeve 711, and is limited by a limiting portion 713 arranged at one end of the inner core end portion 712, the limiting portion 713 and the inner core end portion 712 are also connected by threads, and the other end of the sleeve 711 is sleeved into the fixed rod portion 72 and threadedly connected thereto.

[0086] During disassembly, separate the fixed rod 72 and the rotating rod 71, connect the rotating rod 71 and the fixed rod 72 to the first side rod 4 and the second side rod 5 respectively, and then fold and store the first side rod 4, the second side rod 5 and the third side rod 6 with the corresponding first bottom plate 1, the second bottom plate 2 and the third bottom plate 3.

[0087] In order to facilitate rotation, an anti-slip portion is provided on the outside of the sleeve 711; in order to protect the connecting thread between the sleeve 98 tube 711 and the fixed rod 72, a completed thread is provided in the fixed rod 72, and a connecting thread section is provided at the end of the sleeve 711.

[0088] Of course, the inner core end 712, sleeve 711 and fixed rod 72 can also be a three-stage telescopic connecting rod, and the inner core end 712 and the fixed rod 72 can be telescoped to both ends by rotating the sleeve 711 to adjust the length. However, although this method is feasible, there is a large resistance when rotating the sleeve 711, and the operation is more inconvenient.

[0089] In summary, the dragging device includes an adjustable side frame, a drag blanket 14, an air cushion system, a drag handle 10 and an installation box 11, wherein the air cushion system includes a first air cushion and a second air cushion, which can be switched between a flat dragging mode and a bent-body carrying mode to adapt to complex terrain and reduce the burden on rescuers. The first air cushion contains a bow-shaped air cushion-type shoulder strap 12, which is used to assist in bearing pressure or as a shoulder strap; the second air cushion is the main pressure-bearing or auxiliary stabilizing air cushion, and has built-in rollers to improve dragging efficiency. The device is equipped with an adaptive adjustment head frame 9, a middle strap 16, an upper strap 15 and a lower strap 17 to ensure that the wounded are fixed and comfortable. This device achieves the characteristics of efficient rescue, strong terrain adaptability, simple operation and comprehensive protection of the wounded, and is particularly suitable for emergency rescue tasks in harsh environments such as plateaus.

[0090] The various embodiments in this specification are described in a progressive manner. Each embodiment focuses on the differences from other embodiments. The same and similar parts between the various embodiments can be referenced to each other.

[0091] The terms "upper," "lower," "outer," "inner," and the like, if used in the present description and claims, and in the accompanying drawings, are used to distinguish relative positions and are not necessarily qualitative. It should be understood that the terms used in this manner are interchangeable where appropriate, such that the embodiments of the present invention described herein can be implemented in sequences other than those illustrated or described herein. Furthermore, the terms "including," "having," and any variations thereof, are intended to cover non-exclusive inclusions.

[0092] The above description of the disclosed embodiments is intended to enable one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be readily apparent to one skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not limited to the embodiments shown herein but is intended to conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A multifunctional dragging device for plateau transportation, comprising a frame body with a dragging blanket mounted on the frame body; characterized in that: The frame body includes adjustable side frames on both sides, and a first bottom plate, a second bottom plate and a third bottom plate are installed between the adjustable side frames; The adjustable side frame includes a first side bar, a second side bar, a third side bar, a first telescopic link and a second telescopic link, wherein the first side bar, the second side bar and the third side bar are hingedly connected, the first telescopic link has two ends hingedly connected to the first side bar and the second side bar respectively, and the second telescopic link has two ends hingedly connected to the second side bar and the third side bar respectively; The first bottom plate, the second bottom plate and the third bottom plate are respectively mounted and fixed on the first side rod, the second side rod and the third side rod, corresponding to positions close to the head, buttocks and legs respectively; The frame body can be adjusted to a flat dragging mode or a bent carrying mode by adjusting the length of the first telescopic link and the second telescopic link; A first air cushion is fixed under the first bottom plate and the second bottom plate, and a second air cushion is fixed under the second bottom plate and the third bottom plate; The first air cushion includes a first air cushion body and two bow-shaped air cushion-type shoulder straps, each of the bow-shaped air cushion-type shoulder straps is provided with a first roller, and the bow-shaped air cushion-type shoulder straps serve as shoulder straps and / or auxiliary pressure-bearing frames in a flat-lying dragging mode, and serve as main pressure-bearing shoulder straps in a bent-body carrying mode; The second air cushion includes a second air cushion body, the second air cushion body is provided with a second roller, and the second air cushion body serves as a main pressure-bearing frame in the flat-lying dragging mode and as an auxiliary stabilizing air cushion in the curved body carrying mode; A drag handle is provided at one end of the frame body, and an installation box is provided at the other end. The installation box is used to install the battery assembly and the inflation device, and is also used for the foot pedal and to limit the injured person's feet; The first bottom plate is equipped with an adaptive headrest, the second bottom plate and the second side bars corresponding to both sides thereof are equipped with a middle strap for fixing the hips, and the first side bars and the third side bars are equipped with an upper strap and a lower strap for fixing the upper torso and the lower torso respectively; The self-adaptive head frame includes a base, an outer head frame is provided on the base, an inner head frame is installed inside the outer head frame, and the inner head frame is movably installed inside the outer head frame in the left and right directions; Guide shafts are provided on the outside of both sides of the inner head frame, guide holes adapted to the guide shafts are opened on both sides of the outer head frame, and a first spring is sleeved on the guide shafts between the outer head frame and the inner head frame; The two sides of the base are slidably mounted on the slide bar in the up and down directions, and the two ends of the slide bar are sleeved with a second spring.

2. The multifunctional dragging device for plateau transportation according to claim 1, characterized in that: The bow-shaped air cushion type harness comprises a harness body, an air cavity is provided in the harness body, and an inflation port is provided in the air cavity; The strap body is provided with an anti-wear layer near the outer side, and a cushion layer is provided at the inner side where it meets the shoulder; The first air cushion body is provided with an air cavity communicating with the strap body, and the second air cushion body is provided with an air cavity communicating with or independent of the first air cushion body; The first air cushion body and the second air cushion body are both provided with an anti-wear layer near the outer side; The first roller and the second roller are installed through a first installation shaft and a second installation shaft respectively, and the first installation shaft and the second installation shaft are respectively integrally formed in the shoulder strap body and the second air cushion body.

3. The multifunctional dragging device for plateau transportation according to claim 2, characterized in that: A silicone cushion is provided on the inner side of the inner head frame; A protective sleeve for the movement of the guide shaft is installed on the outer side of the outer head frame, and the protective sleeve is snap-fitted and installed on the outer side of the outer head frame.

4. The multifunctional dragging device for plateau transportation according to claim 1, characterized in that: The drag blanket is an electric blanket, which is electrically connected to a power supply component and is powered by the power supply component.

5. The multifunctional dragging device for plateau transportation according to claim 2, characterized in that: The inflation device includes an air pump or an automatic inflation component, and the automatic inflation component includes an air pump, an air pipe and an inflation connector thereof, and the inflation connector is adapted to the inflation port.

6. The multifunctional dragging device for plateau transportation according to claim 1, characterized in that: A foldable roof is provided above the frame body. The foldable roof comprises a foldable frame and a tent. The foldable frame comprises a fixing seat fixedly mounted on the first bottom plate or the first telescopic connecting rod.

7. The multifunctional dragging device for plateau transportation according to claim 6, characterized in that: The first base plate, the second base plate, the third base plate and the other end of the foldable frame are respectively connected to the corresponding first telescopic link, the second telescopic link and the third telescopic link through corresponding locking ring assemblies.

8. The multifunctional dragging device for plateau transportation according to claim 1, characterized in that: The first telescopic link and the second telescopic link each include a corresponding fixed rod portion and a rotating rod portion. The rotating rod portion includes a sleeve and an inner core end portion. The inner core end portion can be rotatably inserted into the sleeve and limited by a limiting portion provided at one end of the inner core end portion. The other end of the sleeve is sleeved into the fixed rod portion and threadedly connected thereto.

9. The multifunctional dragging device for plateau transportation according to any one of claims 1 to 8, characterized in that: The first air cushion and the second air cushion are fixed to the corresponding first bottom plate, second bottom plate and third bottom plate by screw fasteners, or are fixed to the corresponding first side rod, second side rod and third side rod by lock buckles; A plurality of locking ring assemblies are provided on the first side bar, the second side bar and the third side bar; The bottom of the second air cushion body is a curved bottom.

Images