A portable folding first-aid stretcher for field trauma

Abstract

A portable foldable first-aid stretcher for field trauma provided by the present invention includes a spinal protection mechanism, folding lifting rods, a head support mechanism, a foot support mechanism, movable wheels and support rods, and relates to the technical field of first-aid stretchers. The overall design adopts the segmentation principle combined with the nesting principle, and through the rotation folding and elastic clamping combined with the telescopic structure, the technical effect of combining the horizontal folding storage and the vertical folding storage of the stretcher is achieved, making the overall occupied space of the stretcher small and the assembly and use convenient; by adopting the segmentation principle combined with the elastic structure, and using the flexible characteristics of the elastic pad combined with the elastic support of the protection plate and the inclined plate, the stretcher has both the comfort of the flexible support of the canvas stretcher and the stability of the rigid support of the plate stretcher, and through the elasticity of the spring, the technical effect of earthquake resistance and compression resistance during transportation is achieved, ensuring the comfort of the wounded, and there is no excess fixing belt scattered, avoiding the situation of hooking on plants and trees during outdoor transportation, and at the same time, single-person transportation can be realized.

Description

Technical Field

[0001] The present invention belongs to the technical field of first aid stretchers, and specifically refers to a portable folding outdoor trauma first aid stretcher. Background Art

[0002] A stretcher is one of the important emergency rescue devices for transporting patients or the wounded. There are many types of stretchers for first aid transportation of patients and the wounded. However, existing stretchers are relatively large in volume and heavy in self-weight, making them laborious to carry and not easy to transport during outdoor operations or outdoor activities. For outdoor trauma first aid stretchers, the existing first aid stretchers generally have the following defects:

[0003] 1. The structural function of the first aid stretcher is relatively single, mostly using a combination of canvas and metal rods. In the complex terrain in the wild, the strength of the stretcher itself and the protection of patients and the wounded cannot be guaranteed. In particular, there is no protective measure for the spine of the wounded, and secondary injuries to the wounded are likely to occur during transportation.

[0004] 2. The first aid stretcher is relatively large in volume and cannot be folded and stored, making it inconvenient to carry. Moreover, the straps and restraint belts are scattered, and during outdoor activities, it is easy to scrape against vegetation and is difficult to transport, resulting in delays in the rescue of the wounded.

[0005] 3. Some assembled first aid stretchers are complex to install and use, and cannot be operated and carried by a single person, making them inconvenient to use. Summary of the Invention

[0006] To solve the above existing problems, the present invention provides a portable folding outdoor trauma first aid stretcher, which provides multi-directional shock absorption protection for the wounded, can be folded horizontally and vertically, is convenient to assemble, occupies a small space, is convenient to carry, and can be operated and transported by a single person.

[0007] To achieve the above object, the technical solution adopted by the present invention is as follows: A portable folding field trauma first aid stretcher provided by the present invention includes a spinal protection mechanism, folding lifting rods, a head support mechanism, a foot support mechanism, movable wheels and support rods. The folding lifting rods are symmetrically arranged at both ends of the spinal protection mechanism respectively. The head support mechanism and the foot support mechanism are respectively sleeved on the folding lifting rods. The head support mechanism is arranged on one side of the spinal protection mechanism, and the foot support mechanism is arranged on the other side of the spinal protection mechanism. The movable wheels and the support rods are respectively arranged on the folding lifting rods. The movable wheels are symmetrically arranged on both sides of the foot support mechanism, and the support rods are symmetrically arranged on both sides of the head support mechanism. Among them, the spinal protection mechanism includes support side columns, a protection component and a storage component. The support side columns are symmetrically connected between the head support mechanism and the foot support mechanism respectively. The protection component is connected between the support side columns. The storage component is arranged on the protection component. The whole adopts the principle of segmentation combined with the principle of nesting. Through the rotation folding and elastic snap-fit telescopic structure, the technical effect of the lateral folding storage and longitudinal folding storage of the stretcher is realized, making the overall occupied space of the stretcher small and the assembly and use convenient.

[0008] The cam is provided with a plurality of holes for the support member, and the holes are provided on the upper and lower walls of the support member, respectively. The plurality of holes are provided on the upper and lower walls of the support member, respectively. The plurality of holes are provided on the upper and lower walls of the support member, respectively. The plurality of holes are provided on the upper and lower walls of the support member, respectively. The plurality of holes are provided on the upper and lower walls of the support member, respectively. The plurality of holes are provided on the upper and lower walls of the support member, respectively. The fixed blocks are respectively evenly arranged on the folding plates, and the sliding blocks are respectively slidably arranged in the fixed blocks, and the fixed blocks are connected with the sliding blocks through springs. The inclined plates are fitted at the lower part of the elastic pad, and the inclined plates are symmetrically and inclinedly arranged on both sides of the protective plate. The bottom of the inclined plates are respectively evenly arranged with rotating rods, and the bottom ends of the rotating rods are respectively rotatably connected to the ends of the sliding blocks. The bottoms of the inclined plates close to the protective plates are respectively connected to the folding plates and are evenly arranged with involvement springs. The segmentation principle is combined with the elastic structure, and the flexible characteristics of the elastic pad are combined with the elastic support of the protective plate and the inclined plate. The stretcher has both the comfort of the flexible support of the canvas stretcher and the stability of the rigid support of the plate stretcher. The elasticity of the spring is used to achieve the technical effect of shock and pressure resistance during transportation, thereby ensuring the comfort of the wounded. At the same time, the protective plate and the inclined plate can better fit the arc of the wounded's waist and hips to provide supporting force.

[0009] Preferably, the length of the involvement spring when it remains in its original state is smaller than the length of the shock-absorbing spring when it remains in its original state, so that the inclined plate remains inclined. The elasticity of the spring allows the stretcher to continue to absorb shock during transportation, preventing secondary injuries to the wounded due to bumps.

[0010] Furthermore, the storage assembly includes a storage box, a storage rotating rod, a storage torsion spring and a protective rope, the storage boxes are respectively connected to the upper part of the fixed block, the upper part of the storage box is penetrated in the limiting groove, the storage rotating rods are respectively rotatable in the storage box, the storage torsion springs are respectively sleeved on both ends of the storage rotating rod, the storage torsion springs connect the storage rotating rod and the storage box, the two ends of the protective rope are respectively arranged on the storage rotating rod, and the middle part of the protective rope is provided with a protective buckle. Through the application of the torsion spring, the elastic winding of the protective rope is realized, and there is no excess fixing belt scattered during outdoor transportation, and there will be no scratching of grass and trees.

[0011] Furthermore, the folding lifting rod includes a lifting rod body, connecting sliding plates, connecting rotating plates, mounting columns, grips, and positioning screws. The lifting rod body is respectively movably arranged at both ends of the supporting side columns. The connecting sliding plates are respectively slidably arranged on the side walls of the supporting side columns. The connecting rotating plates are respectively connected to the outer side walls of the lifting rod body and the connecting sliding plates. Both ends of the connecting rotating plate are respectively rotatably connected to the lifting rod body and the connecting sliding plate. Both ends of the lifting rod body are respectively provided with an assembly chute and a grip chute that do not penetrate. The inner wall of the assembly chute is provided with a first limiting chute that does not penetrate. The inner wall of the grip chute is provided with a second limiting chute that does not penetrate. The bottom end of the assembly chute is provided with a first contraction groove. The bottom end of the grip chute is provided with a second contraction groove. The mounting column is slidably arranged in the assembly chute. The mounting column slides in the mounting groove. A first contraction block is provided on the lower side wall of the mounting column. The first contraction block slides in the first limiting chute. A first contraction spring is connected to the mounting column in the assembly chute. The grip is slidably arranged in the grip chute. A second contraction block is provided on the lower side wall of the grip. The second contraction block slides in the second limiting chute. A second contraction spring is connected to the grip in the grip chute. The positioning screw is meshed and arranged at the center of the rotating shaft of the connecting rotating plate close to the connecting sliding plate. The positioning screw penetrates through the mounting screw hole and is meshed and arranged in the mounting column. The end parts of the lifting rod body are respectively connected with winding belts. An activity sleeve is rotatably arranged at the end part of the lifting rod body. A torsion spring is connected between the activity sleeve and the lifting rod body. Both ends of the winding belt are respectively wound and arranged on the activity sleeve. By rotating and pressing, the protruding mounting column and the grip are stored, saving space.

[0012] Furthermore, a covering plate is provided at the end of the connecting sliding plate away from the connecting rotating plate. The covering plates are respectively slidably sleeved on the supporting side columns. Guide sliders are symmetrically provided on the inner side wall of the covering plate. The guide sliders slide in the sliding grooves. The sliding distance of the guide sliders in the sliding grooves is greater than the height of the mounting column. A magnetic block is provided at the end of the covering plate. The provided folding lifting rod can be conveniently folded and stored while ensuring the stability of the stretcher according to the complex field terrain. The provided positioning screw, covering plate, and magnetic block make the mounting column, connecting sliding plate, and connecting rotating plate inserted into the supporting side column become an integral body through the positioning of the positioning screw. At the same time, the covering plate and the mutually attracting magnetic blocks make the connecting sliding plate stably arranged on the supporting side column, ensuring the stability of the stretcher and not being easily damaged during the process of transporting the wounded.

[0013] Preferably, the total length of the connecting sliding plate, the covering plate, and the magnetic block is equal to half of the length of the supporting side column.

[0014] Further, the head support mechanism includes an upper elastic pad, an upper support plate, and an upper protective plate. The upper elastic pad is sleeved on two lifting rod bodies. A headrest is provided on the upper elastic pad. The upper support plate is arranged below the upper elastic pad. Tensile plates are symmetrically and slidably embedded on both sides of the upper support plate. The tensile plates are connected to the upper support plate by springs. Rotating connecting rods are evenly arranged and rotatably on the side walls of the tensile plates. The other ends of the rotating connecting rods are arranged on the lifting rod bodies. The rotating connecting rods are of a tensile structure. The upper protective plate is attached to the lower part of the upper elastic pad. The upper protective plate is arranged above the upper support plate. Pressure-bearing springs are evenly arranged between the upper protective plate and the upper support plate.

[0015] Further, the foot support mechanism includes a lower elastic pad, connecting support columns, and telescopic connecting rods. The lower elastic pad is sleeved on two lifting rod bodies. Straps are respectively arranged on both sides of the lower elastic pad. Locking buckles are symmetrically arranged on the lower elastic pad. The straps are engaged with the locking buckles. The telescopic connecting rods are symmetrically arranged inside the lifting rod bodies. The connecting support columns are connected to the ends of the telescopic connecting rods. Both ends of the connecting support columns are respectively rotatably connected to the ends of the telescopic connecting rods. Through the setting of the tensile plates and the tensile structures of the rotating connecting rod boxes and the telescopic connecting rods, the position change of the folding lifting rod connected to the upper elastic pad can be adapted, ensuring the longitudinal folding and storage of the stretcher.

[0016] Further, the movable wheels include first sleeves, control shafts, support rods, and universal wheels. The first sleeves are respectively sleeved on the lifting rod bodies. The support rods are respectively rotatably arranged outside the first sleeves. The control shafts penetrate through the support rods and are movably arranged inside the rotation centers of the lifting rod bodies and the support rods. An activity groove is provided inside the rotation center of the support rod without penetrating through. Cut-off grooves are provided on the side walls of the support rods penetrating through the outside of the activity groove. There are two cut-off grooves, and the two cut-off grooves are perpendicular to each other. Cut-off blocks are provided on the side walls of the control shafts. The cut-off blocks are respectively movable in the cut-off grooves and the activity grooves. An adjusting spring is connected between the inside of the lifting rod body and the control shaft. Shock-absorbing rods are respectively arranged at the ends of the support rods. The universal wheels are respectively arranged at the ends of the shock-absorbing rods. Through the setting of the movable wheels, during use, it only needs to be pressed and rotated, realizing single-person transfer and having a shock-absorbing effect, and is convenient to use.

[0017] Further, the support rod includes a second collar and a rotating rod. The second collar is sleeved on the lifting rod body respectively. The rotating rod is rotatably arranged on the outer side of the second collar respectively. A positioning shaft is provided at the rotation center of the rotating rod and the second collar. An arc-shaped positioning groove is provided in the end of the rotating rod near the positioning shaft without penetrating through. Positioning balls are evenly distributed on the outer side wall of the positioning shaft. There are four positioning balls. The positioning balls are elastically arranged in the positioning shaft. The positioning balls are movably arranged in the arc-shaped positioning groove. A support foot is provided at the end of the rotating rod far from the positioning shaft. The support rod can be adjusted in orientation as needed by the elastic engagement of the positioning balls and the arc-shaped positioning groove. The support foot can not only support on the ground for auxiliary support, but also be erected for use to hang items such as infusion bottles during the process of transporting the wounded.

[0018] Preferably, the width of the support plate is smaller than the width of the upper support plate, the width of the upper guard plate is smaller than the width of the upper support plate, and the width of the protection plate is equal to the width of the support plate, ensuring the nesting property of the longitudinal folding.

[0019] The beneficial effects achieved by the present invention with the above structure are as follows:

[0020] 1. A portable folding field trauma first aid stretcher provided by the present invention adopts the principle of segmentation combined with the principle of nesting. Through the combination of rotary folding, elastic engagement and telescopic structure, the technical effect of combining the transverse folding storage and longitudinal folding storage of the stretcher is achieved, making the overall occupied space of the stretcher small and the assembly and use convenient.

[0021] 2. By adopting the principle of segmentation combined with the elastic structure, a spinal protection mechanism, a head support mechanism and a foot support mechanism are respectively provided. Utilizing the flexible characteristics of the elastic pad combined with the elastic support of the protection plate and the inclined plate, the stretcher not only has the comfort of the flexible support of the canvas stretcher but also has the stability of the rigid support of the plate stretcher, and the technical effect of earthquake resistance and pressure resistance during the transportation process is achieved through the elasticity of the spring, ensuring the comfort of the wounded.

[0022] 3. According to the complex outdoor terrain, in order to ensure the stability of the stretcher, positioning screws, a covering plate and magnetic blocks are provided. Through the positioning of the positioning screws, the mounting column, the connecting slide plate and the connecting rotating plate inserted into the supporting side column become an integral body. At the same time, the covering plate and the mutually attracting magnetic blocks make the connecting slide plate stably arranged on the supporting side column, ensuring the stability of the stretcher and not being easily damaged during the process of transporting the wounded.

[0023] 4. Through the application of the torsion spring, the storage of the protective rope and the winding belt is realized. During the outdoor transportation process, there is no unnecessary fixing belt scattered, and the situation of scraping plants and trees will not occur.

[0024] 5. Through the setting of the movable wheels, it only needs to be pressed and rotated during use, realizing single-person transportation and having a shock-absorbing effect at the same time, and the use is convenient. Description of the Drawings

[0025] Figure 1 Schematic structural diagram of a portable folding first-aid stretcher for field trauma provided by the present invention;

[0026] Figure 2 Schematic structural diagram of the spinal protection mechanism;

[0027] Figure 3 Top view of the spinal protection mechanism;

[0028] Figure 4 Bottom view of the spinal protection mechanism;

[0029] Figure 5 Front view of the spinal protection mechanism;

[0030] Figure 6 Bottom view of a portable folding first-aid stretcher for field trauma provided by the present invention;

[0031] Figure 7 Schematic structural diagram of the folding carrying pole;

[0032] Figure 8 Front view of the folding carrying pole;

[0033] Figure 9 For Figure 8 Schematic sectional view at A-A in

[0034] Figure 10 Front view of the head support mechanism;

[0035] Figure 11 Schematic structural diagram of the movable wheel;

[0036] Figure 12 For Figure 11 Schematic sectional view at B-B in

[0037] Figure 13 Schematic structural diagram of the support rod;

[0038] Figure 14 Schematic sectional view of the support rod;

[0039] Figure 15 Top view of a portable folding first-aid stretcher for field trauma provided by the present invention after folding;

[0040] Figure 16 Bottom view of a portable folding first-aid stretcher for field trauma provided by the present invention after folding.

[0041] Among them, 1. spine protection mechanism, 2. folding lifting rod, 3. head support mechanism, 4. foot support mechanism, 5. movable wheel, 6. support rod, 7. support side column, 701. installation slot, 702. installation screw hole, 703. sliding slot, 704. limit plate, 705. limit slot, 706. elastic pad, 8. protection component, 801. folding plate, 802. support plate, 803. connecting plate, 804. protection plate, 805. shock-absorbing spring, 806. fixing block, 807. sliding block, 808, tilting plate, 809, involving spring, 810, rotating rod, 9, storage assembly, 901, storage box, 902, storage rotating rod, 903, storage torsion spring, 904, protection rope, 905, protection buckle, 10, lifting rod body, 1001, assembly slide groove, 1002, handle slide groove, 1003, first limiting slide groove, 1004, second limiting slide groove, 1005, first contraction groove, 1006, second contraction groove, 11, connecting slide plate, 1101, covering plate , 1102, guide slider, 1103, magnetic block, 12, connecting rotating plate, 13, mounting column, 1301, first contraction block, 1302, first contraction spring, 14, handle, 1401, second contraction block, 1402, second contraction spring, 15, positioning screw, 16, winding belt, 1601, movable sleeve, 17, upper elastic pad, 18, upper support plate, 1801, stretching plate, 1802, rotating connecting rod, 19, upper guard plate, 1901, pressure spring, 20, headrest , 21. lower elastic pad, 2101. strap, 2102. buckle, 22. connecting support column, 23. telescopic connecting rod, 24. first set of rings, 25. control shaft, 2501. adjustment spring, 2502. cut-off block, 26. support rod, 2601. movable groove, 2602. cut-off groove, 2603. shock-absorbing rod, 27. universal wheel, 28. second set of rings, 29. rotating rod, 2901. support foot, 2902. positioning arc groove, 2903. positioning shaft, 2904. positioning ball. DETAILED DESCRIPTION

[0042] The technical solution of this patent is further described in detail below in conjunction with specific implementations. The parts of the technical features or connection relationships described in the present invention that are not described in detail are all existing technologies adopted.

[0043] The present invention is further described in detail below in conjunction with the accompanying drawings.

[0044] like Figure 1As shown in the figure, the portable folding first-aid stretcher for field trauma provided by the present invention includes a spinal protection mechanism 1. At both ends of the spinal protection mechanism 1, folding lifting rods 2 are symmetrically provided. A head support mechanism 3 and a foot support mechanism 4 are respectively sleeved on the folding lifting rods 2. The head support mechanism 3 and the foot support mechanism 4 are respectively arranged at both ends of the spinal protection mechanism 1. Movable wheels 5 and support rods 6 are respectively provided on the folding lifting rods 2. The movable wheels 5 are symmetrically arranged on both sides of the foot support mechanism 4, and the support rods 6 are symmetrically arranged on both sides of the head support mechanism 3.

[0045] As Figures 1-5As shown, the spinal protection mechanism 1 includes support side columns 7, which are symmetrically connected and arranged between the head support mechanism 3 and the foot support mechanism 4 respectively. Installation grooves 701 are respectively provided at both ends of the support side columns 7 without penetrating through. Installation screw holes 702 penetrate through the side walls of the installation grooves 701 and the support side columns 7. Sliding grooves 703 are respectively provided symmetrically and without penetrating through on the upper and lower side walls of the support side columns 7. Limiting plates 704 are symmetrically and horizontally arranged inside the support side columns 7. Limiting grooves 705 penetrate through the limiting plates 704 respectively. Elastic pads 706 are connected to the limiting plates 704. A protection component 8 is connected between the support side columns 7. A storage component 9 is provided on the protection component 8. The protection component 8 includes folding plates 801, which are respectively arranged inside the support side columns 7. The folding plates 801 are arranged below the limiting plates 704. Support plates 802 are movably arranged inside the folding plates 801. Connecting pieces 803 are respectively rotationally connected between the support plates 802 and the folding plates 801. The connecting pieces 803 are evenly distributed at the lower parts of the support plates 802 and the folding plates 801. A protection plate 804 is arranged above the support plate 802. The protection plate 804 is attached to the lower part of the elastic pad 706. Shock-absorbing springs 805 are evenly connected between the protection plate 804 and the support plate 802. Fixing blocks 806 are respectively and evenly arranged on the folding plates 801. Sliding blocks 807 are respectively slidably arranged inside the fixing blocks 806. The fixing blocks 806 are connected to the sliding blocks 807 through springs. Inclined plates 808 are symmetrically and obliquely arranged on both sides of the protection plate 804. The inclined plates 808 are attached to the lower part of the elastic pad 706. Rotating rods 810 are respectively and evenly arranged at the bottoms of the inclined plates 808. The bottom ends of the rotating rods 810 are respectively rotationally connected to the ends of the sliding blocks 807. Pulling springs 809 are respectively and evenly connected between the bottom parts of the inclined plates 808 close to the protection plate 804 and the folding plates 801. The length of the pulling springs 809 in their original state is less than the length of the shock-absorbing springs 805 in their original state; the storage component 9 includes storage boxes 901, which are respectively connected and arranged on the upper parts of the fixing blocks 806. The upper parts of the storage boxes 901 penetrate through the limiting grooves 705. Storage rotating rods 902 are respectively rotatably arranged inside the storage boxes 901. Storage torsion springs 903 are respectively sleeved at both ends of the storage rotating rods 902. The storage torsion springs 903 connect the storage rotating rods 902 and the storage boxes 901. Protection ropes 904 are respectively wound around the storage rotating rods 902. Protection buckles 905 are arranged in the middle of the protection ropes 904.

[0046] As Figure 1 and Figures 7-10As shown in the figure, the folding lifting rod 2 includes a lifting rod body 10 and a connecting slide plate 11. The two ends of the lifting rod body 10 are respectively movably arranged at the two ends of the supporting side column 7. The connecting slide plates 11 are respectively slidably arranged on the side walls of the supporting side column 7. Connecting rotating plates 12 are respectively connected to the outer side walls of the lifting rod body 10 and the connecting slide plate 11. The two ends of the connecting rotating plate 12 are respectively rotatably connected to the lifting rod body 10 and the connecting slide plate 11. Assembly chute 1001 and grip chute 1002 are respectively provided at the two ends of the lifting rod body 10 without penetrating through. An installation column 13 is slidably arranged in the assembly chute 1001. The installation column 13 slides in the installation groove 701. A first limiting chute 1003 is provided on the inner wall of the assembly chute 1001 without penetrating through. A first contraction groove 1005 is provided at the bottom end of the assembly chute 1001. A first contraction block 1301 is provided on the lower side wall of the installation column 13. The first contraction block 1301 slides in the first limiting chute 1003. A first contraction spring 1302 is connected to the installation column 13 in the assembly chute 1001. A grip 14 is slidably arranged in the grip chute 1002. A second limiting chute 1004 is provided on the inner wall of the grip chute 1002 without penetrating through. A second contraction groove 1006 is provided at the bottom end of the grip chute 1002. A second contraction block 1401 is provided on the lower side wall of the grip 14. The second contraction block 1401 slides in the second limiting chute 1004. A second contraction spring 1402 is connected to the grip 14 in the grip chute 1002. The positioning screw 15 is meshed near the rotation axis center of the connecting rotating plate 12 close to the connecting slide plate 11. The positioning screw 15 penetrates through the installation screw hole 702 and is meshed and arranged in the installation column 13. A covering plate 1101 is provided at the end of the connecting slide plate 11 away from the connecting rotating plate 12. The covering plate 1101 is respectively slidably sleeved on the supporting side column 7. Guide sliders 1102 are symmetrically provided on the inner side wall of the covering plate 1101. The guide sliders 1102 slide in the sliding groove 703. The sliding distance of the guide sliders 1102 in the sliding groove 703 is greater than the height of the installation column 13. A magnetic block 1103 is provided at the end of the covering plate 1101. The total length of the connecting slide plate 11, the covering plate 1101 and the magnetic block 1103 is equal to half of the length of the supporting side column 7. Winding belts 16 are respectively connected to the ends of the lifting rod body 10. A movable sleeve 1601 is rotatably arranged at the end of the lifting rod body 10. A torsion spring is connected between the movable sleeve 1601 and the lifting rod body 10. The two ends of the winding belt 16 are respectively wound and arranged on the movable sleeve 1601.

[0047] As Figure 1 , Figure 6 , Figure 10 and Figure 16As shown, the head support mechanism 3 includes an upper elastic pad 17, which is sleeved on two lifting rod bodies 10. A headrest 20 is provided on the upper elastic pad 17. An upper support plate 18 is provided below the upper elastic pad 17. On both sides of the upper support plate 18, stretching plates 1801 are symmetrically and slidably embedded. The stretching plates 1801 are connected to the upper support plate 18 by springs. Rotating connecting rods 1802 are evenly and rotatably arranged on the side walls of the stretching plates 1801. The other ends of the rotating connecting rods 1802 are arranged on the lifting rod bodies 10. The rotating connecting rods 1802 are of a stretching structure. A upper protective plate 19 is attached to the lower part of the upper elastic pad 17. The upper protective plate 19 is arranged above the upper support plate 18. Pressure-bearing springs 1901 are evenly arranged between the upper protective plate 19 and the upper support plate 18. The width of the upper protective plate 19 is smaller than that of the upper support plate 18. The width of the upper support plate 18 is larger than that of the support plate 802. The width of the protective plate 804 is equal to that of the support plate 802; the foot support mechanism 4 includes a lower elastic pad 21, which is sleeved on two lifting rod bodies 10. Straps 2101 are respectively provided on both sides of the lower elastic pad 21. Lock catches 2102 are symmetrically provided on the lower elastic pad 21. The straps 2101 are engaged with the lock catches 2102. Telescopic connecting rods 23 are symmetrically provided inside the lifting rod bodies 10. A connecting support column 22 is connected to the end of the telescopic connecting rod 23. Both ends of the connecting support column 22 are rotatably connected to the end of the telescopic connecting rod 23.

[0048] As Figure 1 and Figures 11-15As shown in the figure, the movable wheel 5 includes a first sleeve ring 24, and the first sleeve ring 24 is respectively sleeved on the lifting rod body 10. Support rods 26 are respectively rotatably arranged on the outer side of the first sleeve ring 24. A control shaft 25 is movably arranged through the rotation centers of the lifting rod body 10 and the support rod 26. An activity groove 2601 is arranged in the rotation center of the support rod 26 without penetrating it. Cutoff grooves 2602 are arranged through the side wall of the support rod 26 on the outer side of the activity groove 2601. There are two cutoff grooves 2602, and the two cutoff grooves 2602 are perpendicular to each other. Cutoff blocks 2502 are arranged on the side wall of the control shaft 25, and the cutoff blocks 2502 are respectively movable in the cutoff grooves 2602 and the activity groove 2601. An adjusting spring 2501 is connected between the interior of the lifting rod body 10 and the control shaft 25. Shock-absorbing rods 2603 are respectively arranged at the ends of the support rods 26, and universal wheels 27 are respectively arranged at the ends of the shock-absorbing rods 2603; the support rod 6 includes a second sleeve ring 28, and the second sleeve ring 28 is respectively sleeved on the lifting rod body 10. Rotating rods 29 are respectively rotatably arranged on the outer side of the second sleeve ring 28. A positioning shaft 2903 is arranged at the rotation center of the rotating rod 29 and the second sleeve ring 28. A positioning arc groove 2902 is arranged in the end of the rotating rod 29 near the positioning shaft 2903 without penetrating it. Positioning balls 2904 are evenly arranged on the outer side wall of the positioning shaft 2903. There are four positioning balls 2904, and the positioning balls 2904 are elastically arranged in the positioning shaft 2903. The positioning balls 2904 are movably arranged in the positioning arc groove 2902. Support feet 2901 are arranged at the ends of the rotating rods 29 far away from the positioning shafts 2903.

[0049] Working principle and working process:

[0050] When carrying a wounded person, the stretcher is unfolded as shown in Figure 1In the state shown, move the wounded to the stretcher, place the head of the wounded on the headrest 20, with the shoulder, neck and back positions fitting against the upper elastic pad 17, the waist, hip and spine positions fitting against the elastic pad 706, and the leg and foot positions fitting against the lower elastic pad 21. The wounded lies on the upper guard plate 19, the protection plate 804 and the inclined plate 808. Since the upper elastic pad 17, the elastic pad 706 and the lower elastic pad 21 have a certain elasticity, after the wounded lies down, the pressure-bearing spring 1901, the shock-absorbing spring 805 and the connecting spring 809 are all appropriately compressed to provide elastic support, and at the same time achieve the purpose of shock absorption during transportation, avoiding secondary injuries caused by the jolting of the wounded. At this time, since the length of the connecting spring 809 when in its original state is less than the length of the shock-absorbing spring 805 when in its original state, and due to the inclined setting of the inclined plate 808, when the wounded lies on the protection plate 804 and presses against the inclined plate 808 on the side, the rotating rod 810 at the bottom of the inclined plate 808 pushes the sliding block 807 to slide within the fixed block 806, so that the protection plate 804 and the inclined plate 808 can better fit the arc of the waist and hip of the wounded to provide support force. The flexible characteristic of the elastic pad 706 combined with the elastic support of the protection plate 804 and the inclined plate 808 enables the stretcher to have both the comfort of the flexible support of a canvas stretcher and the stability of the rigid support of a plate stretcher, and achieves the technical effect of earthquake resistance and compression resistance through the elasticity of the spring, making the wounded comfortable and the transfer safe and stable. Then, pull out the protection ropes 904 from the storage box 901 respectively, snap the two protection buckles 905 together to fix the upper limb part of the wounded. During the process of pulling out the protection ropes 904, the storage rotating rod 902 rotates to accumulate elastic potential energy in the storage torsion spring 903, and the torsional elasticity of the storage torsion spring 903 keeps the protection ropes 904 always in a tightened state. Subsequently, snap the straps 2101 and the lock 2102 together and adjust the length of the straps 2101 to fix the legs of the wounded to prevent the wounded from falling. After the wounded is fixed, pull out the winding belts 16 at both ends of the stretcher and put them on the shoulders of the medical staff for auxiliary fixation. The movable sleeve 1601 always provides elastic tension to keep the winding belts 16 tightened. Then, the stretcher can be lifted by the handle 14 for transporting the wounded. During the transportation process, the pressure-bearing spring 1901, the shock-absorbing spring 805 and the connecting spring 809 always play a shock-absorbing effect. And through the positioning screw 15, the mounting column 13 inserted into the support side column 7, the connecting slide plate 11 and the connecting rotating plate 12 are integrated. At the same time, the covering plate 1101 and the mutually attracting magnets 1103 make the connecting slide plate 11 firmly set on the support side column 7, ensuring the stability of the stretcher, being able to cope with the complex terrain in the wild, not being easily damaged, and there is no excess fixing belt scattered, and there will be no situation of scraping against grass and trees during the handling process;When the outdoor terrain is relatively flat, the stretcher can be carried by a single person through the movable wheels 5. Press the control shaft 25 inward respectively to adjust the compression of the spring 2501, so that the cut-off block 2502 slides into the movable slot 2601. At this time, the support rod 26 can rotate around the control shaft 25. After putting down the two universal wheels 27, release the control shaft 25, and the cut-off block 2502 slides into another cut-off slot 2602 to fix the position of the support rod 26. Then apply force to rotate the rotating rod 29 so that the support feet 2901 touch the ground for auxiliary support. During the process of rotating the rotating rod 29, the inner edge of the clamping arc groove 2902 presses the clamping ball 2904. When the rotating rod 29 rotates to the correct position, the clamping ball 2904 is clamped into the four corners of the clamping arc groove 2902 for positioning. Subsequently, the wounded lies on the stretcher, and single-person pulling and transferring can be achieved. During the transfer process, the shock-absorbing rod 2603 continuously plays a shock-absorbing role.;

[0051] When folding and storing is required, first loosen the positioning screws 15 respectively to disengage the mounting post 13 from the fixation of the positioning screws 15, and then pull the folding lifting rod 2 to both sides to fold it. When pulling, the magnetic blocks 1103 separate, and the guiding sliders 1102 slide in the sliding grooves 703 until the mounting post 13 completely slides out of the mounting groove 701. Subsequently, fold the head support mechanism 3 upward and the foot support mechanism 4 downward. During this process, the connecting rotating plate 12 gradually rotates from the horizontal state to the vertical state, the movable wheels 5 gradually approach the upper part of the support side column 7, and the support rod 6 gradually approaches the lower part of the support side column 7 until the folding lifting rods 2 on both sides fit the support side column 7. Then press the mounting post 13 and the handle 14 inward respectively, squeezing the first compression spring 1302 and the second compression spring 1402, and at the same time rotate to make the first contraction block 1301 slide from the first limiting chute 1003 into the first contraction groove 1005, and make the second contraction block 1401 slide from the second limiting chute 1004 into the second contraction groove 1006, so as to store the mounting post 13 and the handle 14 and complete the horizontal folding and storage. If further folding and storage is required, since the connecting piece 803 is provided at the lower part of the support plate 802 and the folding plate 801, its rotation direction is determined. Just rotate the support side column 7 and the folding lifting rod 2 that are fitted downward. The folding plate 801 is perpendicular to the support plate 802, and the elastic pad 706 is stretched. And for the head support mechanism 3 above the spinal protection mechanism 1, the stretching plate 1801 slides out of the upper support plate 18 to cooperate with the displacement of the lifting rod body 10 to expand the area of the upper support plate 18. At the same time, due to the telescopic structures of the rotating connecting rod 1802 and the telescopic connecting rod 23, it can adapt to and connect the displaced lifting rod body 10. After folding, as Figure 15 and Figure 16 shown, the winding belt 16 can still freely contract and can be carried on the back by medical staff. Thus, the combination of horizontal folding and storage and vertical folding and storage of the stretcher is realized, making the entire stretcher occupy less space and being convenient to carry.

[0052] The above is the overall working process of the present invention. Repeat these steps when using it next time.

[0053] It should be noted that in this text, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements not only includes those elements, but also includes other elements not expressly listed, or further includes elements inherent to such process, method, article or device.

[0054] Although embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

[0055] The above describes the present invention and its implementation manners. Such a description is not restrictive. What is shown in the drawings is only one of the implementation manners of the present invention, and the actual structure is not limited thereto. Generally speaking, if those of ordinary skill in the art are inspired by it and, without departing from the purpose of the present invention, design similar structural manners and embodiments to this technical solution without creative efforts, they should all fall within the protection scope of the present invention.

Claims

1. A portable folding first-aid stretcher for field trauma, characterized in that: It includes a spinal protection mechanism (1), a folding lifting rod (2), a head support mechanism (3), a foot support mechanism (4), movable wheels (5) and a support rod (6). The folding lifting rod (2) is symmetrically arranged at both ends of the spinal protection mechanism (1) respectively. The head support mechanism (3) and the foot support mechanism (4) are respectively sleeved on the folding lifting rod (2). The head support mechanism (3) and the foot support mechanism (4) are respectively arranged at both ends of the spinal protection mechanism (1). The movable wheels (5) and the support rod (6) are respectively arranged on the folding lifting rod (2). The movable wheels (5) are symmetrically arranged on both sides of the foot support mechanism (4). The support rod (6) is symmetrically arranged on both sides of the head support mechanism (3). Among them, the spinal protection mechanism (1) includes support side columns (7), a protection component (8) and a storage component (9). The support side columns (7) are symmetrically connected and arranged between the head support mechanism (3) and the foot support mechanism (4) respectively. The protection component (8) is connected and arranged between the support side columns (7). The storage component (9) is arranged on the protection component (8); Both ends of the described support side column (7) are respectively provided with installation grooves (701) that do not penetrate, installation screw holes (702) that penetrate the support side column (7) are respectively provided on the side walls of the installation grooves (701), sliding grooves (703) that do not penetrate and are symmetrically provided are respectively provided on the upper and lower side walls of the support side column (7), limiting plates (704) are symmetrically and horizontally arranged inside the support side column (7), limiting grooves (705) are respectively provided through the limiting plates (704), and elastic pads (706) are connected to the limiting plates (704); the protection component (8) includes a folding plate (801), a support plate (802), a protection plate (804), an inclined plate (808), a fixing block (806) and a sliding block (807), the folding plates (801) are respectively arranged inside the support side column (7), the folding plates (801) are arranged below the limiting plates (704), the support plates (802) are movably arranged inside the folding plates (801), connecting pieces (803) are respectively arranged between the support plates (802) and the folding plates (801) in a rotational connection manner, the connecting pieces (803) are evenly distributed at the lower parts of the support plates (802) and the folding plates (801), the protection plate (804) is attached to the lower part of the elastic pad (706), the protection plate (804) is arranged above the support plate (802), damping springs (805) are evenly connected between the protection plate (804) and the support plate (802), the fixing blocks (806) are respectively evenly arranged on the folding plates (801), the sliding blocks (807) are respectively slidably arranged inside the fixing blocks (806), the fixing blocks (806) are connected to the sliding blocks (807) through springs, the inclined plates (808) are attached to the lower part of the elastic pad (706), the inclined plates (808) are symmetrically inclined on both sides of the protection plate (804), rotating rods (810) are respectively evenly arranged at the bottoms of the inclined plates (808), the bottoms of the rotating rods (810) are respectively rotatably connected to the ends of the sliding blocks (807), and connecting springs (809) are evenly connected between the bottoms of the inclined plates (808) close to the protection plate (804) and the folding plates (801), and the length of the connecting spring (809) when in its original state is less than the length of the damping spring (805) when in its original state.

2. The portable folding first-aid stretcher for field trauma according to claim 1, wherein: The storage component (9) includes a storage box (901), a storage rotating rod (902), a storage torsion spring (903) and a protective rope (904). The storage box (901) is respectively connected and arranged on the upper part of the fixed block (806). The upper part of the storage box (901) is arranged through the limiting groove (705). The storage rotating rods (902) are respectively rotatably arranged in the storage box (901). The storage torsion springs (903) are respectively sleeved on both ends of the storage rotating rod (902). The storage torsion spring (903) connects the storage rotating rod (902) and the storage box (901). Both ends of the protective rope (904) are respectively arranged on the storage rotating rod (902), and a protective buckle (905) is arranged in the middle of the protective rope (904).

3. The portable folding first-aid stretcher for field trauma according to claim 2, wherein: The folding lifting rod (2) includes a lifting rod body (10), a connecting slide plate (11), a connecting rotating plate (12), a mounting post (13), a grip (14) and a positioning screw (15). The two ends of the lifting rod body (10) are respectively movably arranged at the two ends of the supporting side column (7). The connecting slide plates (11) are respectively slidably arranged on the side walls of the supporting side column (7). The connecting rotating plates (12) are respectively connected to the outer side walls of the lifting rod body (10) and the connecting slide plates (11). The two ends of the connecting rotating plate (12) are respectively rotatably connected to the lifting rod body (10) and the connecting slide plate (11). The two ends of the lifting rod body (10) are respectively provided with an assembly chute (1001) and a grip chute (1002 that do not penetrate through. The inner wall of the assembly chute (1001) is provided with a first limiting chute (1003) that does not penetrate through. The inner wall of the grip chute (1002) is provided with a second limiting chute (1004) that does not penetrate through. The bottom end of the assembly chute (1001) is provided with a first contraction groove (1005). The bottom end of the grip chute (1002) is provided with a second contraction groove (1006). The mounting post (13) is slidably arranged in the assembly chute (1001). The mounting post (13) slides in the mounting groove (701). The lower side wall of the mounting post (13) is provided with a first contraction block (1301). The first contraction block (1301) slides in the first limiting chute (1003). A first contraction spring (1302) is connected to the mounting post (13) in the assembly chute (1001). The grip (14) is slidably arranged in the grip chute (1002). The lower side wall of the grip (14) is provided with a second contraction block (1401). The second contraction block (1401) slides in the second limiting chute (1004). A second contraction spring (1402) is connected to the grip (14) in the grip chute (1002). The positioning screw (15) is meshed and arranged at the rotation center of the connecting rotating plate (12) close to the connecting slide plate (11). The positioning screw (15) penetrates through the mounting screw hole (702) and is meshed and arranged in the mounting post (13). The end parts of the lifting rod body (10) are respectively connected with a winding belt (16). The end part of the lifting rod body (10) is rotatably provided with a movable sleeve (1601). A torsion spring is connected between the movable sleeve (1601) and the lifting rod body (10). The two ends of the winding belt (16) are respectively wound and arranged on the movable sleeve (1601).

4. The portable folding first-aid stretcher for field trauma according to claim 3, characterized in that: The end of the connecting slide plate (11) far from the connecting rotating plate (12) is provided with a covering plate (1101). The covering plate (1101) is respectively sleeved and slidably arranged on the supporting side column (7). Guide sliders (1102) are symmetrically arranged on the inner side wall of the covering plate (1101). The guide sliders (1102) slide in the sliding grooves (703). The sliding distance of the guide sliders (1102) in the sliding grooves (703) is greater than the height of the mounting column (13). A magnetic block (1103) is arranged at the end of the covering plate (1101). The total length of the connecting slide plate (11), the covering plate (1101) and the magnetic block (1103) is equal to half of the length of the supporting side column (7).

5. A portable folding field trauma first aid stretcher according to claim 4, characterized in that: The head support mechanism (3) includes an upper elastic pad (17), an upper support plate (18) and an upper protective plate (19). The upper elastic pad (17) is sleeved on two lifting rod bodies (10). A headrest (20) is arranged on the upper elastic pad (17). The upper support plate (18) is arranged below the upper elastic pad (17). Tensile plates (1801) are symmetrically and slidably embedded on both sides of the upper support plate (18). The tensile plates (1801) are connected to the upper support plate (18) through springs. Rotating connecting rods (1802) are respectively and evenly arranged in a rotating manner on the side walls of the tensile plates (1801). The other ends of the rotating connecting rods (1802) are arranged on the lifting rod bodies (10). The rotating connecting rods (1802) are of a tensile structure. The upper protective plate (19) is attached to the lower part of the upper elastic pad (17). The upper protective plate (19) is arranged above the upper support plate (18). Compression springs (1901) are evenly arranged and connected between the upper protective plate (19) and the upper support plate (18).

6. The portable foldable outdoor trauma first aid stretcher according to claim 5, characterized in that: The foot support mechanism (4) includes a lower elastic pad (21), a connecting support column (22) and a telescopic connecting rod (23). The lower elastic pad (21) is sleeved on two lifting rod bodies (10). Straps (2101) are respectively arranged on both sides of the lower elastic pad (21). Lock catches (2102) are symmetrically arranged on the lower elastic pad (21). The straps (2101) are engaged with the lock catches (2102). The telescopic connecting rods (23) are symmetrically arranged inside the lifting rod bodies (10). The connecting support column (22) is connected to the end of the telescopic connecting rod (23). Both ends of the connecting support column (22) are respectively rotatably connected to the end of the telescopic connecting rod (23).

7. A portable folding first aid stretcher for field trauma according to claim 6, characterized in that: The movable wheel (5) includes a first collar (24), a control shaft (25), a support rod (26), and a universal wheel (27). The first collar (24) is sleeved on the lifting rod body (10) respectively. The support rods (26) are rotatably arranged on the outer side of the first collar (24) respectively. The control shaft (25) penetrates through the support rod (26) and is movably arranged in the rotation center of the lifting rod body (10) and the support rod (26). An activity groove (2601) is provided in the rotation center of the support rod (26) without penetrating it. A cut-off groove (2602) is provided on the side wall of the support rod (26) penetrating through the outer side of the activity groove (2601). There are two cut-off grooves (2602), and the two cut-off grooves (2602) are perpendicular to each other. A cut-off block (2502) is provided on the side wall of the control shaft (25), and the cut-off blocks (2502) are respectively movable in the cut-off groove (2602) and the activity groove (2601). An adjusting spring (2501) is connected to the inside of the lifting rod body (10) and the control shaft (25). Shock-absorbing rods (2603) are respectively provided at the ends of the support rods (26), and the universal wheels (27) are respectively arranged at the ends of the shock-absorbing rods (2603).

8. The portable folding first-aid stretcher for field trauma according to claim 7, wherein: The support rod (6) includes a second collar (28) and a rotating rod (29). The second collar (28) is sleeved on the lifting rod body (10) respectively. The rotating rods (29) are rotatably arranged on the outer side of the second collar (28) respectively. A positioning shaft (2903) is provided in the rotation center of the rotating rod (29) and the second collar (28). A positioning arc groove (2902) is provided in one end of the rotating rod (29) close to the positioning shaft (2903) without penetrating it. Positioning balls (2904) are evenly arranged on the outer side wall of the positioning shaft (2903). There are four positioning balls (2904), and the positioning balls (2904) are elastically arranged in the positioning shaft (2903). The positioning balls (2904) are movably arranged in the positioning arc groove (2902). A support foot (2901) is provided at the end of the rotating rod (29) far from the positioning shaft (2903).

9. The portable folding first-aid stretcher for field trauma according to claim 8, wherein: The width of the support plate (802) is smaller than the width of the upper support plate (18), the width of the upper protective plate (19) is smaller than the width of the upper support plate (18), and the width of the protective plate (804) is equal to the width of the support plate (802).

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