Quick loading stretcher for first aid

Abstract

This application relates to a quick loading stretcher for emergency use, comprising a frame, front legs, rear legs, and a support frame. The frame is equipped with a support plate for supporting a patient. The support frame is connected to one end of the bottom of the frame, and several front support wheels are rotatably connected to the support frame. Both the front and rear legs are rotatably connected to the bottom of the frame, with the front legs positioned between the rear legs and the support frame. Several movable wheels are rotatably connected to the bottom of both the front and rear legs. A front support frame and a rear support frame are rotatably connected to the bottom of the frame. A front connecting rod is rotatably connected between the front support frame and the front legs, and a rear connecting rod is rotatably connected between the rear support frame and the rear legs. The frame is equipped with a reset element for resetting the front and rear support frames, and a triggering mechanism for initiating rotation of the front and rear legs. This application improves the applicability of emergency stretchers.

Description

Technical Field

[0001] This application relates to the field of stretcher technology, and in particular to a quick loading stretcher for emergency use. Background Technology

[0002] Ambulance stretchers are medical transport devices made primarily of high-strength aluminum alloy and foam padding. They are mainly used for transporting the wounded and sick in ambulances, hospitals, and battlefields. The product features a low-frame design, telescopic handles, rotating elastic locking guardrails, and a detachable IV stand, allowing for both lifting and ground-based movement.

[0003] Chinese patent CN117898892B discloses an emergency transport stretcher, which includes a support frame, a stretcher body, and a rainproof component for protecting the stretcher body from rain. The stretcher body is mounted on the support frame via a quick-release assembly, which allows for one-button control of the connection between the stretcher body and the support frame. The rainproof component includes a rain cover and rain curtains that seal both ends of the rain cover. Advantages: The quick-release assembly allows for rapid assembly and disassembly of the stretcher body from the support frame, enabling the stretcher body to be directly removed in complex road conditions for patient transport, improving transport efficiency and effectively avoiding secondary injuries to patients caused by unprofessional stretcher transport; Furthermore, the rainproof component on the stretcher body protects the patient from rain, effectively addressing the problem of incomplete and ineffective rain protection in current transport stretchers.

[0004] Regarding the aforementioned technologies, existing technologies use a support frame to support the stretcher body to facilitate patient transport. The stretcher body can also be separated from the support frame depending on road conditions, making it convenient to use. However, since the support frame can be folded into the ambulance, it inevitably contains locking components to maintain its support. Each time the stretcher enters or leaves the ambulance, these locking components need to be unlocked, increasing the time required for the stretcher to enter the ambulance. With repeated use, the locking components may become damaged or shift, hindering rescue work and reducing the stretcher's applicability. Summary of the Invention

[0005] To improve the applicability of emergency stretchers, this application provides an emergency quick loading stretcher.

[0006] This application provides a quick loading stretcher for emergency medical use, employing the following technical solution: An emergency quick-load stretcher includes a frame, front legs, rear legs, and a support frame. The frame is provided with a support plate for supporting the patient. The support frame is connected to one end of the bottom of the frame and has several front support wheels rotatably connected to it. The front and rear legs are both rotatably connected to the bottom of the frame, with the front legs located between the rear legs and the support frame. Several movable wheels are rotatably connected to the bottom of both the front and rear legs. The bottom of the frame is rotatably connected to a front support frame and a rear support frame. A front connecting rod is rotatably connected between the front support frame and the front legs, and a rear connecting rod is rotatably connected between the rear support frame and the rear legs. The frame is provided with a reset member for resetting the front and rear support frames, and a triggering mechanism for triggering the rotation of the front and rear legs.

[0007] By adopting the above technical solution, when transporting a patient, the patient is laid flat on the stretcher, which moves under the support of the front and rear legs. Upon entering the ambulance, the support frame is first inserted into the ambulance, with the front support wheels contacting the ambulance's interior wall. Then, a trigger mechanism sequentially rotates the front and rear legs clockwise until the stretcher is fully inside the ambulance. At this point, the moving wheels and the front support wheels simultaneously contact the ambulance's interior wall, achieving a trigger-activated automatic folding effect for the stretcher. When pushing a patient, the front and rear legs provide support. Upon entering the ambulance, the trigger mechanism directly rotates the front and rear legs clockwise, while the front and rear support frames rotate counter-clockwise. Compared to existing technologies, no additional operations are required when the stretcher enters the ambulance, shortening the time spent on entering the ambulance, avoiding the risk of damage to additional locking components, ensuring smooth rescue operations, and improving the applicability of emergency stretchers.

[0008] Optionally, the triggering mechanism includes a front triggering component and a rear triggering component that pushes the rear leg to rotate. The front triggering component includes an abutment rod, a connecting post, a stop post, and a return torsion spring. The abutment rod is rotatably connected to the front leg. One end of the abutment rod is connected to a pressure-applying part, and the other end is rotatably connected to a first roller. The connecting post is connected to the front connecting rod and is located on the rotation path of the pressure-applying part. The return torsion spring is installed on the front leg and one end presses against the abutment rod. The stop post is connected to the front leg. In the initial state, the pressure-applying part abuts against the stop post.

[0009] By adopting the above technical solution, when triggered, the abutment rod hits the ambulance step and rotates clockwise, causing the swing part to rotate, the connecting column to be compressed, which drives the front connecting rod to rotate clockwise and the front support frame to rotate counterclockwise, so that the front leg can rotate smoothly. Then, the rear trigger component causes the rear leg to rotate clockwise, realizing the automatic folding effect of the front and rear legs.

[0010] Optionally, the rear trigger assembly includes a squeeze wheel and a contact rod, the squeeze wheel being rotatably connected to the front leg and the contact rod being connected to the rear support frame, wherein in the initial state, the contact rod is located on the rotation path of the squeeze wheel.

[0011] By adopting the above technical solution, when the hind leg is triggered to rotate, the clockwise rotating front leg drives the compression wheel to rotate. The compression wheel applies pressure to the contact rod, causing the rear support frame to rotate counterclockwise. The rear connecting rod rotates clockwise, causing the hind leg to rotate clockwise, thus achieving the effect of smooth rotation of the hind leg.

[0012] Optionally, the front connecting rod is L-shaped, a connecting seat is connected to the rear leg, and a baffle is connected to the connecting seat. In the initial state, the front connecting rod presses against the front support frame, and the rear support frame abuts against the baffle.

[0013] By adopting the above technical solution, the reset component applies pressure to the front support frame, and the front connecting rod restricts the rotation of the front support frame, ensuring the stability of the front support frame. Under the weight of the frame, the front legs remain stable and stationary. The front connecting rod is impacted and rotates, disrupting the stable balance of the front support frame, allowing the front legs to fold smoothly. Similarly, the reset component applies pressure to the rear support frame, and the baffle restricts the rear support frame. Under the weight of the frame, the rear legs maintain a stable balance. The rotating extrusion wheel impacts the contact rod, causing the rear support frame to rotate, disrupting the stable balance of the rear legs, allowing the rear legs to fold smoothly.

[0014] Optionally, the pallet includes a front support plate, a support plate, and a rear lifting plate. The support plate is connected to the frame. The front support plate is rotatably connected to one end of the support plate and is disposed on the same side as the support frame. The rear lifting plate is rotatably connected to the other end of the support plate. The frame is provided with a front support assembly for adjusting the angle of the front support plate and a rear lifting assembly for lifting the rear lifting plate.

[0015] By adopting the above technical solution, the patient can lie flat on the stretcher. Depending on the patient's condition, the front support board can be raised by the front support component to elevate the patient's head, and the rear support board can be raised by the rear support component to elevate the patient's feet, thus improving the applicability of the stretcher.

[0016] Optionally, the rear lifting assembly includes a fixed frame and a rotating frame. One fixed frame is connected to each side of the frame body. The fixed frame has a first groove and a second groove, which are connected. The rotating frame has a rotating part and a swinging part, and is rotatably connected between the two fixed frames via the rotating part. A receiving groove is provided at the bottom of the rear lifting plate, and the rotating frame is located within the receiving groove. A limiting plate is detachably connected to the bottom of the rear lifting plate, and the rotating frame is limited within the receiving groove by the limiting plate. The swinging part passes through the gap between the rear lifting plate and the frame body. A handle is connected to the rear lifting plate. When the rear lifting plate is horizontal, the rotating part is located in the first groove; when lifted, the rotating part is located in the second groove.

[0017] By adopting the above technical solution, when the rear lifting plate is supported, the handle is pulled to make the rear lifting plate rotate. While the rotating frame rotates, the rotating part moves within the fixed frame until it moves above the second groove. The handle is then released, and the rotating part enters the second groove to support the rear lifting plate, thus achieving the effect of supporting the rear lifting plate. When resetting, the swinging part is rotated to move the rotating frame. The rotating part disengages from the second groove, and the rear lifting plate can fall down. The rotating part then enters the first groove, thus achieving the effect of resetting the rear lifting plate.

[0018] Optionally, a first fixed seat is connected to the front leg, and a second roller is rotatably connected to the first fixed seat. A second fixed seat is connected to the rear leg, and a third roller is rotatably connected to the second fixed seat. In the folded state, the lowest points of the first roller and the third roller are on the same straight line.

[0019] By adopting the above technical solution and setting the first, second and third rollers, the resistance generated by the friction between the contact bar, front leg and hind leg and the bottom wall of the ambulance is reduced, making the stretcher move more smoothly. At the same time, the front leg and hind leg are effectively supported, reducing the possibility of deformation of the front leg and hind leg due to long-term pressure.

[0020] Optionally, both sides of the frame are provided with a stop and a limiting component. The limiting component includes a fixed cylinder, a locking post, an ejector spring, and an operating head. Two fixed plates are connected to both sides of the frame. The stop is rotatably connected between the two fixed plates. A limiting hole is opened on the stop. The fixed cylinder is horizontally connected to one of the fixed plates. When the stop is in the vertical state, the fixed cylinder is aligned with the limiting hole. The locking post is slidably fitted inside the fixed cylinder. One end of the locking post is provided with an inclined surface and partially enters the limiting hole. The other end is connected to a sliding rod. The sliding rod passes through the fixed cylinder. The ejector spring is sleeved on the sliding rod and located inside the fixed cylinder. The operating head is threadedly fitted to the end of the sliding rod.

[0021] By adopting the above technical solution, the side guards are used to restrict the patient's position on the frame. When the patient is lifted onto the frame, the guards are in the lowered state. Then the guards are flipped, the guards apply pressure to the inclined surface, the locking pin moves, and the ejector spring is compressed until the guards are in the vertical state. The locking pin is pushed into the limiting hole by the ejector spring force to restrict the guards. When the guards fall, simply pull the operating head to disengage the locking pin from the limiting hole.

[0022] Optionally, the support frame is provided with an adjustment assembly, which includes a limiting bolt, a limiting nut, an adjusting cylinder, and an adjusting frame. Two adjusting cylinders are inserted through the bottom end of the support frame, and several adjusting holes are opened on the side wall of the adjusting cylinder. The limiting bolt passes through the support frame and the adjusting holes. The limiting nut is threaded onto the limiting bolt and abuts against the support frame. The adjusting frame is connected between the two adjusting cylinders, and the front support wheel is rotatably connected to the adjusting frame.

[0023] By adopting the above technical solution, the height of the support wheels can be adjusted by limiting the fit of the bolts and different adjustment holes, making the stretcher adaptable to the inner bottom wall of different ambulances and improving the applicability of the stretcher.

[0024] In summary, this application includes at least one of the following beneficial technical effects: 1. When transporting a patient, the patient is laid flat on the stretcher, which moves with the support of the front and rear legs. Upon entering the ambulance, the support frame is first inserted into the ambulance, with the front support wheels contacting the ambulance's interior wall. Then, a trigger mechanism sequentially rotates the front and rear legs clockwise until the stretcher is fully inside the ambulance. At this point, the moving wheels and the front support wheels simultaneously contact the ambulance's interior wall, achieving a trigger-activated automatic folding effect for the stretcher. When pushing a patient, the front and rear legs provide support. Upon entering the ambulance, the trigger mechanism directly rotates the front and rear legs clockwise, while the front and rear support frames rotate counter-clockwise. Compared to existing technologies, no additional operations are required when the stretcher enters the ambulance, reducing the time spent on this process, avoiding the risk of damage to additional locking components, ensuring smooth rescue operations, and improving the applicability of emergency stretchers. 2. When triggered, the abutment rod hits the ambulance step and rotates clockwise, causing the swinging part to rotate. The connecting column is compressed, which drives the front connecting rod to rotate clockwise and the front support frame to rotate counterclockwise, allowing the front legs to rotate smoothly. Then, the rear trigger component causes the rear legs to rotate clockwise, achieving the automatic folding effect of the front and rear legs. 3. When the rear leg is triggered to rotate, the clockwise rotating front leg drives the compression wheel to rotate. The compression wheel applies pressure to the contact rod, causing the rear support frame to rotate counterclockwise. The rear connecting rod rotates clockwise, causing the rear leg to rotate clockwise, thus achieving the effect of smooth rotation of the rear leg. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the overall structure of the stretcher in the embodiments of this application.

[0026] Figure 2 This is a schematic diagram of the structure of the adjustment component in the embodiments of this application.

[0027] Figure 3 This is a schematic diagram of the front legs, rear legs, and triggering mechanism in an embodiment of this application.

[0028] Figure 4 This is a diagram showing the state of the stretcher being folded up in an embodiment of this application.

[0029] Figure 5 This is a schematic diagram of the structure of the rear lifting component in the embodiments of this application.

[0030] Figure 6 This is a diagram showing the state of the rear lifting plate being supported in an embodiment of this application.

[0031] Figure 7 This is an exploded view used in the embodiments of this application to illustrate the structure of the limiting component.

[0032] Figure 8 This is a cross-sectional view used in the embodiments of this application to illustrate the structure of the limiting component.

[0033] Explanation of reference numerals in the attached drawings: 1. Frame; 11. Front leg; 12. Rear leg; 121. Connecting seat; 122. Baffle; 13. Support frame; 14. Front support frame; 141. Front connecting rod; 15. Rear support frame; 151. Rear connecting rod; 16. Reset component; 17. First fixed seat; 171. Second roller; 18. Second fixed seat; 181. Third roller; 19. Baffle; 2. Adjustment assembly; 21. Restricting bolt; 22. Restricting nut; 23. Adjusting cylinder; 24. Adjustment frame; 241. Front support wheel; 3. Triggering mechanism; 31. Front triggering assembly; 311. Abutment rod; 3 111. Pressing part; 3112. First roller; 312. Connecting column; 313. Stop column; 314. Return torsion spring; 32. Rear trigger assembly; 321. Extrusion wheel; 322. Contact rod; 4. Support plate; 41. Front support plate; 42. Support plate; 43. Rear lifting plate; 431. Handle; 5. Front support assembly; 6. Rear lifting assembly; 61. Fixing frame; 611. First groove; 612. Second groove; 62. Rotating frame; 621. Rotating part; 622. Swinging part; 7. Limiting assembly; 71. Fixing cylinder; 72. Locking column; 73. Ejection spring; 74. Operating head. Detailed Implementation

[0034] The following is in conjunction with the appendix Figures 1-8 This application will be described in further detail.

[0035] This application discloses a quick loading stretcher for emergency medical services. (See also...) Figure 1 and Figure 2 The emergency quick-loading stretcher includes a frame 1, front legs 11, rear legs 12, and a support frame 13. The support frame 13 is vertically fixed to one end of the bottom of the frame 1. An adjustment assembly 2 is provided on the support frame 13, which includes a limiting bolt 21, a limiting nut 22, an adjusting cylinder 23, and an adjusting bracket 24. One adjusting cylinder 23 is inserted into each end of the support frame 13, and several adjusting holes are vertically formed on the surface of the adjusting cylinder 23. The limiting bolt 21 passes through the adjusting holes, through the support frame 13, and the adjusting cylinder 23. The limiting nut 22 is threaded onto the limiting bolt 21 and abuts against the support frame 13. The adjusting bracket 24 is bolted between the two adjusting cylinders 23, and several front support wheels 241 are rotatably connected to the adjusting bracket 24; this embodiment uses two as an example.

[0036] During adjustment, the height of the front support wheel 241 is adjusted by using different adjustment holes and limiting bolts 21, so that the stretcher can be adapted to different models of ambulances, thus improving the applicability of the stretcher.

[0037] Reference Figure 1 Two bases are welded to both sides of the frame 1. The top of the front leg 11 is hinged to one set of bases, and the top of the rear leg 12 is hinged to the other set of bases. The front leg 11 is located between the rear leg 12 and the front support wheel 241. The bottom of the front leg 11 and the rear leg 12 are rotatably connected to the movable wheel. The movable wheel of the front leg 11 is a fixed wheel, and the movable wheel of the rear leg 12 is a universal wheel.

[0038] Reference Figure 3 The frame 1 has a front support frame 14 and a rear support frame 15 hinged to its bottom. A front connecting rod 141 is hinged between the front support frame 14 and the front leg 11. The front connecting rod 141 is L-shaped and initially presses against the front support frame 14. A connecting seat 121 is welded to the rear leg 12, and a baffle 122 is fixedly connected to the connecting seat 121. A rear connecting rod 151 is hinged between the rear leg 12 and the connecting seat 121, and the rear support frame 15 is in contact with the baffle 122. Two sets of reset components 16 are installed on the frame 1. The reset components 16 are torsion springs, with two in each set. One set of reset components 16 applies pressure to the front support frame 14, and the other set applies pressure to the rear support frame 15.

[0039] The reset component 16 applies pressure to the front support frame 14 and the rear support frame 15, causing the front connecting rod 141 to press against the front support frame 14 and the baffle 122 to fit against the rear support frame 15, ensuring that the front leg 11 and the rear leg 12 are in a stable state.

[0040] Reference Figure 3 and Figure 4The frame 1 is equipped with a triggering mechanism 3, which includes a front triggering assembly 31 and a rear triggering assembly 32. The front triggering assembly 31 includes an abutment rod 311, a connecting post 312, a stop post 313, and a return torsion spring 314. One end of the abutment rod 311 is hinged to the front leg 11 and fixedly connected to a pressure application part 3111, while the other end is rotatably connected to a first roller 3112. The connecting post 312 is welded to the front connecting rod 141 and is located on the rotation path of the pressure application part 3111. The return torsion spring 314 is mounted on the front leg 11 and applies pressure to the abutment rod 311 at one end. The stop post 313 is fixedly connected to the front leg 11, and the pressure application part 3111 abuts against the stop post 313. Reference Figure 3 and Figure 4 The rear trigger assembly 32 includes a compression wheel 321 and a contact rod 322. The compression wheel 321 is rotatably connected to the front leg 11. The contact rod 322 is welded to the rear support frame 15. In the initial state of the rear leg 12, the contact rod 322 is located on the rotation path of the compression wheel 321.

[0041] When the front legs 11 and rear legs 12 are triggered to fold, the front support wheel 241 rolls on the inner bottom wall of the ambulance, the contact rod 311 hits the ambulance step and rotates clockwise, the reset torsion spring 314 is compressed, the pressure part 3111 presses the connecting column 312, the front connecting rod 141 rotates clockwise, driving the front support frame 14 to rotate counterclockwise, so that the front legs 11 rotate counterclockwise and fold smoothly. In this process, the compression wheel 321 rotates counterclockwise, the compression wheel 321 hits the contact rod 322, so that the rear support frame 15 rotates counterclockwise, the rear connecting rod 151 rotates clockwise, so that the rear legs 12 rotate counterclockwise, thus achieving the effect of smooth folding of the front legs 11 and rear legs 12.

[0042] Reference Figure 3 To facilitate easier movement of the stretcher within the ambulance, a first fixed seat 17 is welded to the front leg 11, and a second roller 171 is rotatably connected to the first fixed seat 17. A second fixed seat 18 is welded to the rear leg 12, and a third roller 181 is rotatably connected to the second fixed seat 18. When folded, the front support wheel 241, the first roller 3112, the third roller 181, and the two sets of movable wheels all contact the inner floor wall of the ambulance. The first roller 3112, the second roller 171, and the third roller 181 assist in the movement of the stretcher within the ambulance and also provide support for the stretcher.

[0043] Reference Figure 1 , Figure 5 and Figure 6The frame 1 is equipped with a support plate 4, which includes a front support plate 41, a support plate 42, and a rear lifting plate 43. Both ends of the support plate 42 are fixedly connected to pivots, and the support plate 42 is fixedly connected to the frame 1 via these pivots. The front support plate 41 is hinged to one of the pivots and is on the same side as the front support wheel 241. The frame 1 is equipped with a front support assembly 5 that supports the front support plate 41. The front support assembly 5 uses a gas spring as the main support means; this is a mature technology in the field and will not be described in detail here.

[0044] Reference Figure 5 and Figure 6 The rear lifting plate 43 is hinged to another pivot on the support plate 42. A rear lifting assembly 6 is provided on the frame 1, comprising a fixed frame 61 and a rotating frame 62. The fixed frame 61 is welded to both sides of the bottom of the frame 1, and has a first groove 611 and a second groove 612, which are connected. The rotating frame 62 has a rotating part 621 and a swinging part 622. The rotating frame 62 is rotatably connected to the first groove 611 via the rotating part 621. A receiving groove is formed on the bottom wall of the rear lifting plate 43, and part of the rotating frame 62 is located within the receiving groove. A limiting plate is bolted to the bottom wall of the rear lifting plate 43, sealing part of the rotating frame 62 within the receiving groove. The swinging part 622 passes between the rear lifting plate 43 and the frame 1. A handle 431 is integrally formed on the rear lifting plate 43. Several support columns are fixedly connected to both ends of the frame 1 along its length. The support column at one end of the frame 1 supports the front support plate 41, and the support column at the other end supports the rear lifting plate 43.

[0045] The front support plate 41 is supported by a gas spring, and the angle of the front support plate 41 can be adjusted to facilitate the patient raising their head. In the initial state, the rotating part 621 is located in the first groove 611. When lifting, the handle 431 is pulled to rotate the rear lifting plate 43, and the rotating frame 62 rotates, causing the rotating part 621 to move within the fixed frame 61 until it moves above the second groove 612. The handle 431 is then released, and the rotating part 621 enters the second groove 612, forming a triangular stable state between the rear lifting plate 43, the support frame 13, and the frame 1, which facilitates the patient raising their legs. When releasing, simply pull the handle 431 to disengage the rotating part 621 from the second groove 612, and the rear lifting plate 43 can be lowered.

[0046] Reference Figure 1 , Figure 7 and Figure 8The frame 1 has a stop 19 and a limiting component 7 on both sides. The limiting component 7 includes a fixed cylinder 71, a locking pin 72, an ejector spring 73, and an operating head 74. Two fixed plates are welded to both sides of the frame 1. The stop 19 is hinged between the two fixed plates and has a limiting hole. The fixed cylinder 71 is horizontally fixed to one of the fixed plates. When the stop 19 is vertical, the fixed cylinder 71 is aligned with the limiting hole. The locking pin 72 is slidably fitted inside the fixed cylinder 71. One end of the locking pin 72 has an inclined surface and is partially inserted into the limiting hole. The other end is fixedly connected to a slide rod, which passes through the fixed cylinder 71 and extends to the outside. The operating head 74 is threaded onto the end of the slide rod. The ejector spring 73 is sleeved on the slide rod and located inside the fixed cylinder 71.

[0047] The side supports 19 are used to restrain the patient and prevent the patient from falling off the stretcher. When the patient is being transported, one side support 19 is in the lowered state. After the patient is lying flat on the support board, the support 19 is flipped over. The support 19 contacts the inclined surface, the locking pin 72 moves, and the push spring 73 is compressed until the support 19 is in a vertical state. The locking pin 72 enters the limiting hole, thereby restricting the rotation of the support 19.

[0048] The implementation principle of a quick-access stretcher for emergency use in this application embodiment is as follows: When the stretcher is pushed into the ambulance, the front support wheel 241 first contacts the inner wall of the ambulance, and then the contact rod 311 hits the ambulance step and rotates clockwise. The pressure part 3111 presses the connecting column 312, and the front connecting rod 141 rotates clockwise, driving the front support frame 14 to rotate counterclockwise, so that the front legs 11 can be smoothly folded clockwise. Then the compression wheel 321 rotates clockwise and hits the contact rod 322, causing the rear support frame 15 to rotate counterclockwise. The rear connecting rod 151 rotates clockwise, so that the rear legs 12 can be smoothly folded clockwise. At this time, the frame 1 moves in the ambulance by means of the moving wheel, the front support wheel 241, the first roller 3112, the second roller 171 and the third roller 181, so as to achieve the effect of quick loading of the stretcher into the ambulance.

[0049] When pushing a patient, the stretcher is supported by the front legs 11 and the hind legs 12. When entering the ambulance, the front legs 11 and the hind legs 12 rotate clockwise and the front support frame 14 and the rear support frame 15 rotate counterclockwise directly through the trigger mechanism 3. Compared with the existing technology, no additional operation is required when the stretcher enters the ambulance, which shortens the time spent on the stretcher entering the ambulance, avoids the risk of damage to additional locking parts, ensures the smooth progress of the rescue work, and improves the applicability of the emergency stretcher.

[0050] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A quick loading stretcher for emergency use, characterized in that: The device includes a frame (1), front legs (11), rear legs (12), and a support frame (13). The frame (1) is equipped with a support plate (4) for supporting the patient. The support frame (13) is connected to one end of the bottom of the frame (1). Several front support wheels (241) are rotatably connected to the support frame (13). Both the front legs (11) and the rear legs (12) are rotatably connected to the bottom of the frame (1). The front legs (11) are located between the rear legs (12) and the support frame (13). Several movable wheels are rotatably connected to the bottom of both the front legs (11) and the rear legs (12). A front support frame (14) and a rear support frame (15) are rotatably connected to the bottom of the frame (1). 5) A front connecting rod (141) is rotatably connected between the front support frame (14) and the front leg (11), and a rear connecting rod (151) is rotatably connected between the rear support frame (15) and the rear leg (12). A reset member (16) is provided on the frame body (1) to reset the front support frame (14) and the rear support frame (15). A triggering mechanism (3) is provided on the frame body (1) to trigger the rotation of the front leg (11) and the rear leg (12). The triggering mechanism (3) includes a front triggering component (31) and a rear triggering component (32) to push the rear leg (12) to rotate. The front triggering component (31) includes an abutment rod (311) and a connecting column (32). 12) A stop post (313) and a return torsion spring (314). The abutment rod (311) is rotatably connected to the front leg (11). One end of the abutment rod (311) is connected to a pressure part (3111), and the other end is rotatably connected to a first roller (3112). The connecting post (312) is connected to the front connecting rod (141) and is located on the rotation path of the pressure part (3111). The return torsion spring (314) is installed on the front leg (11) and one end presses against the abutment rod (311). The stop post (313) is connected to the front leg (11). In the initial state, the pressure part (3111) abuts against the stop post (313). The rear trigger assembly (32) includes a squeezing wheel (321) and a contact rod (322). The squeezing wheel (321) is rotatably connected to the front leg (11), and the contact rod (322) is connected to the rear support frame (15). In the initial state, the contact rod (322) is located on the rotation path of the squeezing wheel (321). The front connecting rod (141) is L-shaped. A connecting seat (121) is connected to the rear leg (12), and a baffle (122) is connected to the connecting seat (121). In the initial state, the front connecting rod (141) squeezes the front support frame (14), and the rear support frame (15) abuts against the baffle (122).The pallet (4) includes a front support plate (41), a support plate (42), and a rear lifting plate (43). The support plate (42) is connected to the frame (1). The front support plate (41) is rotatably connected to one end of the support plate (42) and is located on the same side as the support frame (13). The rear lifting plate (43) is rotatably connected to the other end of the support plate (42). The frame (1) is provided with a front support assembly (5) for adjusting the angle of the front support plate (41) and a rear lifting assembly (6) for lifting the rear lifting plate (43).

2. The rapid onboarding stretcher of claim 1, wherein: The rear lifting assembly (6) includes a fixed frame (61) and a rotating frame (62). One fixed frame (61) is connected to each side of the frame body (1). The fixed frame (61) has a first groove (611) and a second groove (612) that are connected. The rotating frame (62) has a rotating part (621) and a swinging part (622). The rotating frame (62) is rotatably connected between the two fixed frames (61) via the rotating part (621). The bottom of the rear lifting plate (43) is provided with... The rotating frame (62) is located in the receiving groove. The bottom of the rear lifting plate (43) is detachably connected to a limiting plate. The rotating frame (62) is limited in the receiving groove by the limiting plate. The swing part (622) passes through the gap between the rear lifting plate (43) and the frame (1). The rear lifting plate (43) is connected to a handle (431). When the rear lifting plate (43) is in a horizontal state, the rotating part (621) is located in the first groove (611). When it is lifted, the rotating part (621) is located in the second groove (612).

3. The rapid onboarding stretcher of claim 1, wherein: A first fixed seat (17) is connected to the front leg (11), and a second roller (171) is rotatably connected to the first fixed seat (17). A second fixed seat (18) is connected to the rear leg (12), and a third roller (181) is rotatably connected to the second fixed seat (18). In the folded state, the lowest points of the first roller (3112) and the third roller (181) are on the same straight line.

4. The rapid onboarding stretcher of claim 1, wherein: Both sides of the frame (1) are provided with a baffle (19) and a limiting component (7). The limiting component (7) includes a fixed cylinder (71), a locking post (72), an ejector spring (73), and an operating head (74). Both sides of the frame (1) are connected to two fixed plates. The baffle (19) is rotatably connected between the two fixed plates. The baffle (19) has a limiting hole. The fixed cylinder (71) is horizontally connected to one of the fixed plates. When the baffle (19) is in a vertical state, the fixed cylinder (71) is aligned with the limiting hole. The locking post (72) is slidably fitted inside the fixed cylinder (71). One end of the locking post (72) is provided with an inclined surface and partially enters the limiting hole. The other end is connected to a sliding rod. The sliding rod passes through the fixed cylinder (71). The ejector spring (73) is sleeved on the sliding rod and located inside the fixed cylinder (71). The operating head (74) is threadedly fitted to the end of the sliding rod.

5. The rapid onboarding stretcher of claim 1, wherein: An adjustment assembly (2) is provided on the support frame (13). The adjustment assembly (2) includes a limiting bolt (21), a limiting nut (22), an adjustment cylinder (23), and an adjustment frame (24). Two adjustment cylinders (23) are inserted through the bottom end of the support frame (13). Several adjustment holes are opened on the side wall of the adjustment cylinder (23). The limiting bolt (21) passes through the support frame (13) and the adjustment holes. The limiting nut (22) is threaded onto the limiting bolt (21) and abuts against the support frame (13). The adjustment frame (24) is connected between the two adjustment cylinders (23). The front support wheel (241) is rotatably connected to the adjustment frame (24).

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