Folding emergency stretcher for field operations

Abstract

The field operation folding emergency stretcher is characterized in that the field operation folding emergency stretcher comprises a knapsack and a stretcher body, a protruding block is arranged at the top of the knapsack, a supporting rod is arranged on the protruding block, and the two sides of the supporting rod are in threaded connection with nuts; the stretcher comprises a supporting frame rotationally installed on the supporting rod, an extending frame is slidably installed in the supporting frame, a rolling frame is slidably installed below the extending frame, a limiting rod is rotationally installed at the bottom of the supporting frame, a sliding assembly is rotationally installed at one end of the limiting rod, and the sliding assembly is slidably installed on the backpack. Folding pads are arranged on the supporting frame, the extending frame and the rolling frame, a limiting assembly is arranged in the middle of the extending frame, and buckling belts are arranged on the two sides of the supporting frame and the rolling frame. The stretcher can be converted into stretchers of different structures according to different terrains, so that the transferring mode of a wounded person is changed, meanwhile, the stretcher can be folded, and carrying is convenient.

Description

Technical Field

[0001] The invention relates to the technical field of emergency stretchers, and in particular to a field folding emergency stretcher. Background Art

[0002] In traditional field medical rescue, emergency stretchers are important rescue tools. Traditional emergency stretchers usually adopt a fixed structural design. Although the structure is simple and easy to produce, there are certain shortcomings in actual use. For example, traditional stretchers are large in size and inconvenient to carry. When used in a small space or complex terrain, it is difficult to unfold and fold quickly, which may delay the rescue time and affect the life safety of the wounded. Traditional stretchers are often lifted by two people together. When there is a shortage of manpower, the transfer speed of the wounded will be reduced.

[0003] Prior art, such as the Chinese invention patent with announcement number CN202311303172, discloses "a single-person backpack-type folding stretcher", in which the main frame of the stretcher is composed of side brackets and a bottom bar, and the secondary frame of the stretcher is composed of a hinge. The side brackets, the bottom bar, and the hinge can be folded to shrink the stretcher overall, so that it is convenient for one person to carry. When the stretcher is unfolded, the hinge is adjusted based on the position of the side bracket, and the side bracket is locked by the card rod, and the bottom bar is locked by the hollow stud, so as to provide the patient with comfortable, safe and reliable stretcher transfer conditions; but this structure has a defect, that is, the structure is only suitable for dragging the injured on flat roads, but when it is on rugged roads such as mountainous areas, the structure is difficult to move forward, and it is difficult to use the device in places such as waterways.

[0004] In addition, there are different transfer methods for different terrains, such as: flat areas are suitable for lying stretchers; complex terrains such as gravel are suitable for backpack stretchers; uphill and downhill terrains are suitable for hand-lift stretchers. Summary of the invention

[0005] The purpose of the present invention is to provide a stretcher which can be converted into different structures according to different terrains, so as to change the transfer method of the injured, and at the same time the stretcher can be folded for easy carrying.

[0006] In order to achieve the above technical effect, the present invention is implemented through the following technical solutions: a field folding emergency stretcher, characterized in that it includes a backpack and a stretcher, a protrusion is provided on the top of the backpack, a support rod is provided on the protrusion, and nuts are threadedly connected on both sides of the support rod; the stretcher includes a support frame rotatably installed on the support rod, an extension frame is slidably installed inside the support frame, a rolling frame is slidably installed below the extension frame, a limiting rod is rotatably installed at the bottom of the support frame, a sliding assembly is rotatably installed on one end of the limiting rod, the sliding assembly is slidably installed on the backpack, folding pads are provided on the support frame, a limiting assembly is provided in the middle of the extension frame, and buckles are provided on both sides of the support frame and the rolling frame.

[0007] Preferably, the backpack is made of hard material, a No. 1 slide groove is provided in the middle of the rear end of the backpack, a plurality of limiting holes are provided at equal distances on both sides of the No. 1 slide groove, and the No. 1 slide groove is adapted to the slider.

[0008] Preferably, the support frame is a hollow carbon fiber tube with an "I"-shaped structure, and limiting rings are arranged on both sides of the front end of the support frame, and the limiting rings are adapted to the support rod. Hand guards are arranged on both sides of the front end of the support frame, and the middle part of the support frame is rotatably connected to one end of the limiting rod, and the height of the other end of the limiting rod is below the height of the middle part of the support frame, and a plurality of supporting holes are arranged in an array on the outer side of the support frame.

[0009] Preferably, the rolling frame is a hollow carbon fiber tube with an "I"-shaped structure, handrails are arranged on both sides of the rear end of the rolling frame, hand guards are arranged on the handrails, rollers are arranged on one side of the handrails, and a plurality of support holes are opened on the outer side of the rolling frame.

[0010] Preferably, the sliding assembly includes a slider that is slidably installed in the No. 1 slide groove, a hinge seat is provided on the upper part of the slider, the hinge seat is hinged to one end of the limit rod, a No. 2 slide groove is opened in the middle of the slider, and two No. 3 slide grooves in opposite directions are opened on both sides of the slider perpendicular to the No. 2 slide groove, a stop block is slidably installed in the No. 3 slide groove, a spring is provided on one side of the stop block, a stop rod is slidably installed in the No. 2 slide groove, and the end of the stop rod is slidably connected to the stop block through a sliding pin.

[0011] Preferably, a stop groove inclined at 45° is provided on the stop block, the stop groove is matched with the sliding pin, and a limit block is provided at one end of the stop block, and the limit block is matched with the limit hole.

[0012] Preferably, the folding pad is a corrugated elastic pad, which is arranged above the extension frame, with two ends of the folding pad fixedly connected to the rear end of the support frame and the front end of the rolling frame respectively, and airbag cushions are arranged at both ends of the folding pad, and the airbag cushions are filled with helium.

[0013] Preferably, the limiting assembly includes a fixing ring eccentrically arranged at the upper end of the extension frame, a plurality of limiting teeth are arranged on both sides of the fixing ring, an elastic fixing clamp is eccentrically arranged at the lower end of the extension frame, a fixing ring is rotatably installed inside the fixing clamp, a plurality of limiting teeth are arranged on the inner side of the fixing clamp, the fixing ring and the fixing clamp are penetrated by a rotating shaft, one end of the fixing rod is fixedly installed on one side of the fixing frame, and a cam is eccentrically hinged at the other end of the fixing rod, and the cam is slidably connected to the other side of the fixing frame.

[0014] Compared with the related art, the field folding emergency stretcher provided by the present invention has the following beneficial effects:

[0015] 1. The present invention provides a stretcher, and uses a sliding assembly and a limit assembly to control the change of the structure of the stretcher, so that the stretcher can be switched to different structures in different environments to transfer the injured in a portable manner;

[0016] 2. The present invention provides an airbag, which takes advantage of its softness and the fact that it can provide greater buoyancy on the water surface, so that the escort personnel can transfer the injured person by water when in the water area;

[0017] 3. The present invention sets a limit assembly and utilizes the limit teeth between the fixing ring and the fixing clamp to press the two sides of the elastic fixing clamp to close while the cam rotates, and the closed fixing clamp fixes the fixing ring through the limit teeth. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0019] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0020] Figure 2 This is a schematic diagram of the working of the stretcher rotation of the present invention;

[0021] Figure 3 It is a schematic diagram of the stretcher structure of the present invention;

[0022] Figure 4 is a cross-sectional view of a backpack of the present invention;

[0023] Figure 5 is a cross-sectional view of a sliding assembly of the present invention;

[0024] Figure 6 It is a schematic diagram of the structure of the limit assembly of the present invention;

[0025] Figure 7 It is a schematic diagram of the connection relationship between the stop rod and the stop block of the present invention.

[0026] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0027] 1. backpack; 11. bump; 12. support rod; 13. nut; 14. No. 1 slide; 15. limit hole; 2. stretcher; 21. support frame; 211. limit ring; 212. hand guard; 22. extension frame; 23. rolling frame; 231. armrest; 232. roller; 24. limit rod; 25. sliding assembly; 251. slider; 252. hinge seat; 253. No. 2 slide; 254. No. 3 slide; 255. stop block; 2551. stop groove; 2552. limit block; 256. spring; 257. stop rod; 258. sliding pin; 26. folding pad; 261. airbag; 27. limit assembly; 271. fixing ring; 272. limit tooth; 273. fixing clip; 274. rotating shaft; 275. cam; 28. buckle. DETAILED DESCRIPTION

[0028] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0029] Example 1

[0030] See also Figures 1 to 7 As shown, a field folding emergency stretcher 2 is characterized in that it includes a backpack 1 and a stretcher 2, wherein a protrusion 11 is provided on the top of the backpack 1, a support rod 12 is provided on the protrusion 11, and nuts 13 are threadedly connected on both sides of the support rod 12; the stretcher 2 includes a support frame 21 rotatably mounted on the support rod 12, an extension frame 22 is slidably mounted inside the support frame 21, a rolling frame 23 is slidably mounted below the extension frame 22, a limiting rod 24 is rotatably mounted on the bottom of the support frame 21, a sliding component 25 is rotatably mounted on one end of the limiting rod 24, and the sliding component 25 is slidably mounted on the backpack 1, a folding pad 26 is provided on the support frame 21, the extension frame 22 and the rolling frame 23, a limiting component 27 is provided in the middle of the extension frame 22, and buckles 28 are provided on both sides of the support frame 21 and the rolling frame 23. The stretcher 2 is turned by the limit assembly 27, and the stretcher 2 is fixed to the backpack 1 by the sliding assembly 25 and the nut 13, so that the stretcher 2 is convenient to carry. The stretcher 2 can change its structure through the action of the sliding assembly 25, the limit rod 24 and the limit assembly 27, so that different types of transfer methods can be performed according to the patient's condition and the environment.

[0031] The backpack 1 is made of hard material. A first chute 14 is provided in the middle of the rear end of the backpack 1. A plurality of limiting holes 15 are equidistantly provided on both sides of the first chute 14. The first chute 14 is adapted to the slider 251. The hard material can make the stretcher 2 more stable when the backpack 1 bears the stretcher 2. The first chute 14 and the limiting holes 15 can limit the movement of the sliding assembly 25 on the first chute 14, thereby restricting the deflection of the stretcher 2.

[0032] The support frame 21 is a hollow carbon fiber tube with an "I" - shaped structure. Limiting rings 211 are provided on both sides of the front end of the support frame 21. The limiting rings 211 are adapted to the support rods 12. Hand guards 212 are provided on both sides of the front end of the support frame 21. The middle of the support frame 21 is rotatably connected to one end of the limiting rod 24, and the height of the other end of the limiting rod 24 is below the height of the middle of the support frame 21. A plurality of support holes are arrayed on the outer side of the support frame 21. The "I" - shaped structure makes the support frame 21 more stable when bearing the injured. The limiting rings 211 are used to fix the stretcher 2 on the backpack 1 and can also provide a certain deflection angle for the stretcher 2. The height of the other end of the limiting rod 24 is lower than the height of the middle of the support frame 21, which can make a part of the weight of the injured be borne by the lower part of the backpack 1 when bearing the injured, thereby increasing the bearing capacity of the backpack 1.

[0033] The rolling frame 23 is a hollow carbon fiber tube with an "I" - shaped structure. Handrails 231 are provided on both sides of the rear end of the rolling frame 23. The hand guards 212 are provided on the handrails 231. A roller 232 is provided on one side of the handrail 231. A plurality of support holes are provided on the outer side of the rolling frame 23. The hollow carbon fiber tube can provide sufficient support force while also providing a lighter weight, thereby reducing the burden on the carrier. The roller 232 can reduce the burden on the dragger when dragging the injured.

[0034] The sliding assembly 25 includes a slider 251 slidably installed in the first chute 14. A hinge seat 252 is provided on the upper part of the slider 251. The hinge seat 252 is hinged to one end of the limiting rod 24. A second chute 253 is provided in the middle of the slider 251. Two opposite - direction third chutes 254 are provided on both sides of the slider 251 perpendicular to the second chute 253. A stop block 255 is slidably installed in the third chute 254. A spring 256 is provided on one side of the stop block 255. A stop rod 257 is slidably installed in the second chute 253. The end of the stop rod 257 is slidably connected to the stop block 255 through a sliding pin 258. The stop block 255 is pushed by the spring 256 to fix the slider 251 through the first chute 14. The movement of the stop rod 257 can drive the slider 251 to move, thereby releasing the restriction on the slider 251 and enabling the slider 251 to slide.

[0035] The stop block 255 is provided with a stop groove 2551 inclined at 45°, and the stop groove 2551 is adapted to the sliding pin 258. A limit block 2552 is provided at one end of the stop block 255, and the limit block 2552 is adapted to the limit hole 15. The 45° stop groove 2551 allows the sliding pin 258 to slide in the stop groove 2551, and under the action of the stop rod 257, the stop block 255 is retracted into the inside of the slider 251, so that the limit block 2552 is separated from the limit hole 15, thereby releasing the restriction on the slider 251.

[0036] The folding pad 26 is a corrugated elastic pad, which is arranged above the extension frame 22. The two ends of the folding pad 26 are respectively fixedly connected to the rear end of the support frame 21 and the front end of the rolling frame 23. The two ends of the folding pad 26 are provided with airbags 261, which are filled with helium. The corrugated elastic pad allows the folding pad 26 to be unfolded when the extension frame 22 is extended to the support frame 21 and between the extension frame 22 and the rolling frame 23. The provision of the airbags 261 allows the stretcher 2 to be moved through waterways when carrying the injured, thereby increasing the comprehensiveness of the stretcher 2.

[0037] The limiting assembly 27 includes a fixing ring 271 eccentrically arranged at the upper end of the extension frame 22, a plurality of limiting teeth 272 are arranged on both sides of the fixing ring 271, an elastic fixing clip 273 is eccentrically arranged at the lower end of the extension frame 22, a fixing ring 271 is rotatably installed inside the fixing clip 273, a plurality of limiting teeth 272 are arranged inside the fixing clip 273, the fixing ring 271 and the fixing clip 273 are penetrated by a rotating shaft 274, one end of the fixing rod is fixedly installed on one side of the fixing frame, and a cam 275 is eccentrically hinged at the other end of the fixing rod, and the cam 275 is slidably connected to the other side of the fixing frame. The fixing ring 271 and the fixing clip 273 eccentrically arranged on the extension frame 22 enable the extension frame 22 to fit together when rotating, and the elastic fixing clip 273 can drive the fixing clip 273 to close when the cam 275 rotates, so that the fixing ring 271 is fixed by the limiting teeth 272, thereby fixing the extension frame 22.

[0038] Example 2

[0039] The connection relationship between the extension frame 22 of the present invention and the support frame 21 and the rolling frame 23 is the existing telescopic rod structure;

[0040] The carbon fiber tubes used in the support frame 21 and the rolling frame 23 of the present invention have a diameter and thickness that can bear the weight of a human body;

[0041] The limiting teeth 272 of the present invention can cooperate with each other, and after the limiting teeth 272 cooperate, the fixing ring 271 and the fixing clamp 273 are locked, and can resist the weight of the human body;

[0042] The air bag 261 of the present invention can provide buoyancy capable of supporting the weight of a human body in water.

[0043] Example 3

[0044] Working principle: When there is an injured person in the wild, the user moves the folded stretcher 2 to the scene through the backpack 1, and selects different stretcher 2 structures to transfer the patient according to the environment and the patient's injuries;

[0045] When a patient is injured in a flat area, the user uses the limiting assembly 27 to change the stretcher 2 from a folded state to an unfolded state. When the limiting assembly 27 is working: the user rotates the eccentric cam 275 to unfold the elastic fixing clip 273, so that the limiting teeth 272 are separated from each other, so that the fixing clip 273 releases the restriction of the fixing ring 271. When the limiting assemblies 27 on both sides are opened at the same time, the extension frame 22 can be rotated, so that the structure of the stretcher 2 is changed;

[0046] When the stretcher 2 is unfolded, the user presses the stop rod 257 at the same time to make the stop rod 257 move toward the inside of the slider 251. The stop rod 257 moves in the stop groove 2551 through the sliding pin 258, so that the stop block 255 shrinks toward the inside of the slider 251, so that the limit block 2552 is separated from the limit hole 15, so that the restriction of the slider 251 is released, so that the slider 251 can slide, and the limit rod 24 on the hinge seat 252 makes the stretcher 2 rotate around the support rod 12, so that the stretcher 2 changes from a vertical state to an inclined state, so that the injured person can lie on the stretcher 2. After the injured person lies on the stretcher 2, the buckle 28 is used to fix the injured person on the stretcher 2; when the user drags the injured person, the roller 232 at the bottom of the rolling frame 23 can reduce the burden of the dragger in the process of dragging the injured person;

[0047] When the injured person is on a rough road with rocks or other rough surfaces, the user changes the stretcher 2 into a seat posture through the limiting assembly 27, and then uses the cooperation of the sliding assembly 25 and the limiting rod 24 to make the stretcher 2 in the seat posture tilted, so that the injured person can lie down when sitting on the stretcher 2, so that the center of gravity of the patient is tilted, thereby reducing the burden on the bearer, and the injured person is fixed by the buckle belt 28 when sitting on the stretcher 2;

[0048] When the injured person is in a jungle or other environment, the user unfolds the stretcher 2 through the limiting assembly 27 and removes the nut 13, so that the stretcher 2 can be removed from the support rod 12 through the limiting ring 211, so that the stretcher 2 is independent and the injured person can lie flat, so as to facilitate moving in the jungle;

[0049] When a person is injured in water, the user unfolds the stretcher 2 through the limiting assembly 27, removes the stretcher 2 from the support rod 12, and uses the airbag 261 to make the stretcher 2 float on the water surface, thereby reducing the burden on the user and transferring the person in the water environment.

Claims

1. A foldable field emergency stretcher (2), characterized in that: The backpack (1) and the stretcher (2) are provided with a protrusion (11) on the top of the backpack (1), a support rod (12) is provided on the protrusion (11), and nuts (13) are threadedly connected on both sides of the support rod (12); the stretcher (2) comprises a support frame (21) rotatably mounted on the support rod (12), an extension frame (22) is slidably mounted inside the support frame (21), a rolling frame (23) is slidably mounted below the extension frame (22), a limiting rod (24) is rotatably mounted on the bottom of the support frame (21), a sliding component (25) is rotatably mounted on one end of the limiting rod (24), and the sliding component (25) is slidably mounted on the backpack (1), a folding pad (26) is provided on the support frame (21), the extension frame (22) and the rolling frame (23), a limiting component (27) is provided in the middle of the extension frame (22), and buckles (28) are provided on both sides of the support frame (21) and the rolling frame (23).

2. A foldable field emergency stretcher (2) according to claim 1, characterized in that: The backpack (1) is made of a hard material. A first slide groove (14) is provided in the middle of the rear end of the backpack (1). A plurality of limiting holes (15) are provided at equal intervals on both sides of the first slide groove (14). The first slide groove (14) is adapted to fit the slider (251).

3. A foldable field emergency stretcher (2) according to claim 1, characterized in that: The support frame (21) is a hollow carbon fiber tube with an "I"-shaped structure. Limiting rings (211) are arranged on both sides of the front end of the support frame (21). The limiting rings (211) are adapted to the support rod (12). Hand guards (212) are arranged on both sides of the front end of the support frame (21). The middle of the support frame (21) is rotatably connected to one end of the limiting rod (24), and the height of the other end of the limiting rod (24) is located below the height of the middle of the support frame (21). A plurality of supporting holes are arranged in an array on the outer side of the support frame (21).

4. A foldable field emergency stretcher (2) according to claim 1, characterized in that: The rolling frame (23) is a hollow carbon fiber tube with an "I"-shaped structure. Handrails (231) are arranged on both sides of the rear end of the rolling frame (23). A hand guard (212) is arranged on the handrail (231). A roller (232) is arranged on one side of the handrail (231). A plurality of support holes are opened on the outer side of the rolling frame (23).

5. A foldable field emergency stretcher (2) according to claim 1, characterized in that: The sliding assembly (25) includes a sliding member slidably installed in a No. 1 sliding groove (14), a hinge seat (252) is arranged on the upper part of the slider (251), the hinge seat (252) is hinged to one end of the limit rod (24), a No. 2 sliding groove (253) is opened in the middle part of the slider (251), and two No. 3 sliding grooves (254) in opposite directions are opened on both sides of the slider (251) perpendicular to the No. 2 sliding groove (253), a stop block (255) is slidably installed in the No. 3 sliding groove (254), a spring (256) is arranged on one side of the stop block (255), a stop rod (257) is slidably installed in the No. 2 sliding groove (253), and the end of the stop rod (257) is slidably connected to the stop block (255) through a sliding pin (258).

6. A foldable field emergency stretcher (2) according to claim 5, characterized in that: The stop block (255) is provided with a stop groove (2551) inclined at 45 degrees, the stop groove (2551) is matched with the sliding pin (258), and a limit block (2552) is provided at one end of the stop block (255), and the limit block (2552) is matched with the limit hole (15).

7. A foldable field emergency stretcher (2) according to claim 1, characterized in that: The folding pad (26) is a corrugated elastic pad. The folding pad (26) is arranged above the extension frame (22). Two ends of the folding pad (26) are respectively fixedly connected to the rear end of the support frame (21) and the front end of the rolling frame (23). Airbag (261) pads are arranged at both ends of the folding pad (26). The airbag (261) pads are filled with helium.

8. A foldable field emergency stretcher (2) according to claim 1, characterized in that: The limiting assembly (27) comprises a fixing ring (271) eccentrically arranged at the upper end of the extension frame (22), a plurality of limiting teeth (272) are arranged on both sides of the fixing ring (271), an elastic fixing clamp (273) is eccentrically arranged at the lower end of the extension frame (22), a fixing ring (271) is rotatably installed inside the fixing clamp (273), a plurality of limiting teeth (272) are arranged on the inner side of the fixing clamp (273), the fixing ring (271) and the fixing clamp (273) are penetrated by a rotating shaft (274), one end of the fixing rod is fixedly installed on one side of the fixing frame, and a cam (275) is eccentrically hinged on the other end of the fixing rod, and the cam (275) is slidably connected to the other side of the fixing frame.

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