Traffic accident wounded person safety protection transfer device

Abstract

The invention discloses a traffic accident wounded person safety protection transfer device, and belongs to the technical field of medical instruments. An automatic head locking mechanism is mounted on the left side of the top of the transfer bed body; an anti-twisting leg fixing mechanism is mounted on the right side of the top of the transfer bed body; the anti-twisting leg fixing mechanism comprises a supporting plate, a foot supporting plate, a rotating self-locking mechanism and a multi-stage folding limiting mechanism. Elastic bandages are fixedly mounted on the left sides of the front and rear ends of the transfer bed body; elastic bandages are also fixedly mounted at the front and rear ends of the supporting plate and the foot supporting plate; a magic tape is fixedly mounted on the elastic bandage; and the front and rear elastic bandages are bonded and fixed through magic tapes. By means of the mode, the head of a patient is limited and fixed through the head automatic locking mechanism, the front side and the rear side of the leg of the wounded can be limited and fixed through the multi-stage folding limiting mechanism according to the curve contour of the leg of the human body, the phenomenon that the shank is loosened during binding is avoided, production materials are saved, and the manufacturing cost is reduced.

Description

Technical Field

[0001] This invention relates to the field of medical device technology, specifically to a safe protective transport device for traffic accident victims. Background Technology

[0002] Traffic accidents are common accidents involving injuries and fatalities during motor vehicle operation. Common injuries include deceleration injuries, impact injuries, crush injuries, crushing injuries, and fall injuries, with deceleration injuries and impact injuries being the most common. These injuries can cause traumatic brain injury, cervical spine injury, limb fractures, and other injuries, and the condition can change rapidly.

[0003] Chinese patent CN118476926A discloses an emergency room transport bed that allows for X-ray imaging of traffic accident patients from within an ambulance, transmitting the data to a hospital server. The bed is secured using a fixed mechanism, enabling doctors to obtain patient information more quickly and allowing hospitals to prepare for treatment in advance. This provides patients with more efficient and continuous medical services and ensures that medical equipment such as IV lines and monitoring instruments function properly inside the ambulance. However, this device still has the following problems during use: Car accident victims often suffer from fractures of the limbs and cervical spine. In such cases, medical staff need to first immobilize the victim on a transfer bed before placing a head immobilization device, which is relatively inefficient. When supporting the victim's legs, splints are still used for fixation. However, splints are usually designed as a single piece with the entire splint at the same height. This means that the upper part of the splint that contacts the lower leg does not directly contact the lower leg. As a result, when the splint is applied, the straps cannot contact the top of the lower leg, thus reducing the effectiveness of immobilization and restraint on the victim's legs.

[0004] Based on this, the present invention designs a safe protective transport device for traffic accident victims to solve the above problems. Summary of the Invention

[0005] In view of the above-mentioned shortcomings of the existing technology, the present invention provides a safe protective transport device for traffic accident victims.

[0006] To achieve the above objectives, the present invention provides the following technical solution: A safe protective transport device for traffic accident victims includes a transfer bed, an automatic head locking mechanism, an anti-twist leg fixation mechanism, elastic straps, and Velcro. An automatic head locking mechanism for automatically limiting and fixing the victim's head is installed on the top left side of the transfer bed. An anti-twist leg fixation mechanism for fixing the victim's legs to prevent secondary injury from leg twisting is installed on the top right side of the transfer bed. The anti-torsion leg fixing mechanism includes a support plate, a foot support plate, a rotation self-locking mechanism, and a multi-stage folding limiting mechanism; two support plates are symmetrically fixedly installed at the front and rear ends of the right side of the top of the transfer bed; a foot support plate is rotatably installed at the right end of the support plate; the rotation self-locking mechanism is installed on the right side of the support plate and connected to the foot support plate; the multi-stage folding limiting mechanism is installed on the transfer bed. Elastic straps are fixedly installed on the left side of both the front and rear ends of the transfer bed; elastic straps are also fixedly installed on the front and rear ends of the support plate and foot support plate; Velcro is fixedly installed on the elastic straps; the two corresponding elastic straps at the front and rear are fixed together by Velcro.

[0007] Furthermore, the automatic head locking mechanism includes a contact component and a clamping component; the contact component is connected to the transfer bed; the clamping component is connected to both the contact component and the transfer bed.

[0008] Furthermore, the contact assembly includes a contact clamping block, a fixed pull rod, a first compression spring, and a guide rod; the contact clamping block is slidably mounted on the top left side of the transfer bed; the fixed pull rod is fixedly mounted on the bottom left side of the transfer bed; the guide rod is fixedly mounted on the bottom of the contact clamping block; the guide rod and the fixed pull rod are slidably connected; the first compression spring is wound around the lower outer wall of the guide rod; one end of the first compression spring is fixedly connected to the inner bottom wall of the fixed pull rod; the other end of the first compression spring is fixedly connected to the top outer wall of the guide rod; the contact clamping block is connected to the clamping assembly.

[0009] Furthermore, the clamping assembly includes push rods, rotating rods, and clamping fixing plates; the front and rear ends of the bottom of the contact pressing block are respectively hinged to the ends of the two push rods that are close to each other; the other ends of the two push rods are respectively hinged to the bottom of the two rotating rods, and the two rotating rods are symmetrically arranged front and rear; the top of the transfer bed is symmetrically provided with clearance grooves on the front and rear sides; the top of the rotating rod extends through the interior of the clearance groove to the outer side of the top of the transfer bed, and the middle part of the rotating rod is hinged to the inner wall of the clearance groove; the tops of the front and rear rotating rods are respectively hinged to the two sides of the clamping fixing plates that are far away from each other, and the two clamping fixing plates are located on the front and rear sides of the contact pressing block.

[0010] Furthermore, rubber pads are fixedly installed on the sides of both the front and rear clamping plates that are close to each other.

[0011] Furthermore, the rotating self-locking mechanism includes a ratchet, a pawl, and a second compression spring; both the ratchet and the pawl are rotatably mounted on the right side of the two support plates that are far apart from each other; one end of the ratchet is engaged with one end of the pawl; one end of the second compression spring is fixed to the other end of the pawl; the other end of the second compression spring is fixed to the support plate; the central shaft of the ratchet passes through the support plate and is fixedly connected to the foot support plate.

[0012] Furthermore, the multi-stage folding limiting mechanism includes a first clamping plate, a second clamping plate, a guide rail slider assembly, ratchet teeth, a moving locking plate, a reset spring, a bidirectional lead screw, a receiving plate, and a drive knob; the receiving plate is fixedly installed in the middle of the bottom of the transfer bed; the two ends of the two bidirectional lead screws that are close to each other are rotatably connected to the two sides of the receiving plate respectively; the two ends of the two bidirectional lead screws that are far apart are rotatably connected to the front and rear side walls of the transfer bed respectively; and a drive knob is also fixedly installed on the two ends of the two bidirectional lead screws that are far apart. A first clamping plate is symmetrically distributed on the front and rear sides of the support plate, and both the front and rear first clamping plates are slidably installed on the top of the transfer bed. The bottom center of the front and rear first clamping plates slides through the transfer bed and is threaded to the front and rear ends of the bidirectional lead screw, respectively. The guide rails of the two guide rail slider assemblies are symmetrically fixedly installed on the side of the front and rear first clamping plates that are close to each other. The sliders of the two guide rail slider assemblies are fixedly connected to the center of the side of the two second clamping plates that are far apart from each other. Multiple ratchet teeth are fixedly installed linearly and equally spaced on the top of the side of the front and rear second clamping plates that are far apart from each other. The tooth surface of the ratchet teeth faces to the right. On the right side of the two first clamping plates that are far apart, a movable clamping plate is slidably installed to limit movement; a return spring is wound around the outer end of the movable clamping plate; one end of the return spring is fixedly connected to the movable clamping plate; the other end of the return spring is fixedly connected to the first clamping plate; a snapping bevel is opened at the end of the two movable clamping plates that are close to each other, which engages with ratchet teeth; and the tooth surface of the snapping bevel faces to the left. Furthermore, the second clamping plate is lower in height than the first clamping plate.

[0013] Compared with the prior art, the beneficial effects of this invention are as follows: 1. This invention allows medical personnel to place the head of a traffic accident victim against the contact component and position the victim's legs on top of the support plate, ensuring that the victim's head, neck, and torso are in a straight line. The victim's head will press down on the contact component, allowing the clamping component to quickly limit the victim's head from both the front and rear sides. Then, the victim's head is further secured by the two elastic straps on the left side of the transfer bed surrounding the clamping component, reducing the extra workload of requiring medical personnel to manually reposition the victim's head.

[0014] 2. This invention adjusts the angle of the self-locking mechanism on the foot support plate, allowing the injured person's foot to fit snugly against the foot support plate. Then, the elastic straps on the foot support plate secure the injured person's foot to the foot support plate. Next, pulling the multi-stage folding limiting mechanism at both ends of the support plate to the right allows it to limit and fix the injured person's leg on both sides according to the curve of the human leg. This not only prevents loosening when binding the lower leg but also saves production materials and reduces manufacturing costs. Finally, the elastic straps at both ends of the support plate wrap around the multi-stage folding limiting mechanism to further secure the injured person's leg. Furthermore, because the injured person's foot is fixed to the foot support plate, any twisting of the injured person's leg is further restricted. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the accompanying drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are merely some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without any creative effort.

[0016] Figure 1 This is a perspective view of a vehicle accident victim safety protection and transfer device according to the present invention; Figure 2 This is a front view of a vehicle accident victim safety protection and transfer device according to the present invention; Figure 3 For along Figure 2 A three-dimensional image with a portion removed along the AA direction; Figure 4 For along Figure 2 A 3D diagram with a portion removed from the BB direction; Figure 5 for Figure 4 Enlarged view of point C in the middle; Figure 6 for Figure 5 Enlarged view at point D; Figure 7 for Figure 1 Enlarged view at point E in the middle; Figure 8 This is a partial 3D view of a multi-level folding limit mechanism.

[0017] The labels in the diagram represent: 1. Transfer bed frame; 2. Automatic head locking mechanism; 21. Contact clamping block; 22. Fixed pull rod; 23. First compression spring; 24. Push rod; 25. Rotating rod; 26. Clamping fixing plate; 27. Clearance groove; 28. Guide rod; 3. Anti-torsion leg fixing mechanism; 31. Support plate; 32. Foot support plate; 33. Rotation self-locking mechanism; 331. Ratchet; 332. Pawl; 333. Second compression spring; 34. Multi-stage folding limit mechanism; 341. First clamping plate; 342. Second clamping plate; 343. Guide rail slider assembly; 345. Ratchet; 346. Moving clamping plate; 3461. Snapping inclined surface; 347. Reset tension spring; 348. Two-way lead screw; 349. Receiving plate; 3410. Drive knob; 4. Elastic strap; 5. Velcro. Detailed Implementation

[0018] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0019] The terms "left," "right," "front," "back," "up," and "down" used in the following description refer to the orientation from the perspective of the front view.

[0020] Example 1: In some embodiments, please refer to the accompanying drawings. Figures 1-8 A safety protection and transfer device for traffic accident victims includes a transfer bed 1, an automatic head locking mechanism 2, an anti-twist leg fixation mechanism 3, elastic straps 4, and Velcro 5. The automatic head locking mechanism 2 is installed on the top left side of the transfer bed 1 for automatically limiting and fixing the victim's head. The anti-twist leg fixation mechanism 3 is installed on the top right side of the transfer bed 1 for fixing the victim's legs to prevent secondary injury from leg twisting. Elastic straps 4 are fixedly installed on the left sides of both the front and rear ends of the transfer bed 1. Velcro 5 is fixedly installed on the elastic straps 4; the front Velcro 5 has a rough surface; the rear Velcro 5 has a hook surface; the two corresponding elastic straps 4 are fixedly connected by the Velcro 5.

[0021] The automatic head locking mechanism 2 includes a contact component and a clamping component; the contact component is connected to the transfer bed 1; the clamping components are connected to both the contact component and the transfer bed 1. The anti-torsion leg fixing mechanism 3 includes a support plate 31, a foot support plate 32, a rotational self-locking mechanism 33, and a multi-stage folding limiting mechanism 34; two support plates 31 are symmetrically fixedly installed at the front and rear ends of the top right side of the transfer bed 1; the foot support plate 32 is rotatably installed at the right end of the support plate 31; the rotational self-locking mechanism 33 is installed on the right side of the support plate 31 and connected to the foot support plate 32; the multi-stage folding limiting mechanism 34 is installed on the transfer bed 1. Elastic straps 4 are also fixedly installed at the front and rear ends of the support plate 31 and the foot support plate 32.

[0022] When using this invention, medical personnel place the head of the car accident victim against the contact component and position the victim's legs on top of the support plate 31, so that the victim's head, neck and torso are in a straight line. As the victim's head will press down on the contact component, the clamping component will quickly limit the victim's head from the front and rear sides. Then, the victim's head will be further fixed by the two elastic straps 4 on the left side of the transfer bed 1 around the clamping component, which reduces the extra workload of requiring medical personnel to manually reposition the victim's head. Then, the angle of the self-locking mechanism 33 is adjusted by the foot support plate 32 so that the injured person's foot can fit against the foot support plate 32. Then, the elastic straps 4 set on the foot support plate 32 are used to fix the injured person's foot to the foot support plate 32. Then, the multi-level folding limiting mechanism 34 on the front and rear sides of the support plate 31 is pulled to the right so that the multi-level folding limiting mechanism 34 can limit and fix the front and rear sides of the injured person's leg according to the curve contour of the human leg. This not only avoids loosening when binding the lower leg, but also saves production materials and reduces manufacturing costs. Then, the elastic straps 4 set on the front and rear sides of the support plate 31 are used to wrap around the multi-level folding limiting mechanism 34 to further fix the injured person's leg. And because the injured person's foot is fixed to the foot support plate 32, the twisting of the injured person's leg is further restricted.

[0023] Example 2: In some embodiments, such as Figure 3 As shown, in a preferred embodiment of the present invention, the contact assembly includes a contact clamping block 21, a fixed pull rod 22, a first compression spring 23, and a guide rod 28; the contact clamping block 21 is slidably mounted on the top left side of the transfer bed 1; the fixed pull rod 22 is fixedly mounted on the bottom left side of the transfer bed 1; the guide rod 28 is fixedly mounted on the bottom of the contact clamping block 21; the guide rod 28 is slidably connected to the fixed pull rod 22; the first compression spring 23 is wound around the lower side of the outer wall of the guide rod 28; one end of the first compression spring 23 is fixedly connected to the inner bottom wall of the fixed pull rod 22; the other end of the first compression spring 23 is fixedly connected to the top of the outer wall of the guide rod 28; the contact clamping block 21 is connected to the clamping assembly.

[0024] The clamping assembly includes push rods 24, rotating rods 25, and clamping fixing plates 26. The front and rear ends of the bottom of the contact pressing block 21 are hinged to the ends of the two push rods 24 that are close to each other. The other ends of the two push rods 24 are hinged to the bottoms of the two rotating rods 25, which are symmetrically arranged. The top of the transfer bed 1 has symmetrical clearance grooves 27 on both the front and rear sides. The top of the rotating rod 25 extends through the interior of the clearance groove 27 to the outer side of the top of the transfer bed 1, and the middle of the rotating rod 25 is hinged to the inner wall of the clearance groove 27. The tops of the two rotating rods 25 are hinged to the two sides of the clamping fixing plates 26 that are far apart from each other. The two clamping fixing plates 26 are located on the front and rear sides of the contact pressing block 21. Rubber pads are fixedly installed on the sides of the two clamping fixing plates 26 that are close to each other.

[0025] When the present invention is used, when the injured person's head touches the top of the contact clamping block 21, the contact clamping block 21 and the guide rod 28 move downward and continuously compress the first compression spring 23; and during the downward movement of the contact clamping block 21, it also pushes the front and rear push rods 24 to move in opposite directions, and the movement of the push rods 24 will push the tops of the front and rear rotating rods 25 to move in opposite directions around the hinge point with the transfer bed 1, so that the front and rear clamping fixing plates 26 hold and fix the injured person's head from the front and rear sides; then the front and rear elastic straps 4 on the left side of the transfer bed 1 wrap around the patient's head to achieve the limitation and fixation of the injured person's head.

[0026] Example 3: In some embodiments, such as Figures 4-8 As shown, in a preferred embodiment of the present invention, the rotating self-locking mechanism 33 includes a ratchet 331, a pawl 332, and a second compression spring 333; both the ratchet 331 and the pawl 332 are rotatably mounted on the right side of the two support plates 31 that are far apart from each other; one end of the ratchet 331 is engaged with one end of the pawl 332; one end of the second compression spring 333 is fixed to the other end of the pawl 332; the other end of the second compression spring 333 is fixed to the support plate 31; the central shaft of the ratchet 331 passes through the support plate 31 and is fixedly connected to the foot support plate 32.

[0027] The multi-level folding limiting mechanism 34 includes a first clamping plate 341, a second clamping plate 342, a guide rail slider assembly 343, a ratchet 345, a moving clamping plate 346, a reset tension spring 347, a bidirectional lead screw 348, a receiving plate 349, and a drive knob 3410. The receiving plate 349 is fixedly installed at the bottom center of the transfer bed 1. The two bidirectional lead screws 348 are rotatably connected to the two sides of the receiving plate 349 at their close ends, respectively. The two bidirectional lead screws 348 are rotatably connected to the front and rear side walls of the transfer bed 1 at their far ends, respectively. The drive knob 3410 is also fixedly installed at the far ends of the two bidirectional lead screws 348.

[0028] A first clamping plate 341 is symmetrically distributed on the front and rear sides of the support plate 31, and both the front and rear first clamping plates 341 are slidably mounted on the top of the transfer bed 1. The bottom center of the two front and rear first clamping plates 341 slides through the transfer bed 1 and is threaded to the front and rear ends of the bidirectional lead screw 348 respectively. The guide rails of the two guide rail slider assemblies 343 are symmetrically fixedly mounted on the side of the front and rear first clamping plates 341 that are close to each other. The sliders of the guide rail slider assemblies 343 are fixedly connected to the center of the side of the two second clamping plates 342 that are far away from each other. Multiple ratchet teeth 345 are fixedly mounted linearly and equally spaced on the top of the side of the two front and rear second clamping plates 342. The tooth surface of the ratchet teeth 345 faces to the right.

[0029] On the right side of the two first clamping plates 341 that are far apart, a movable locking plate 346 is slidably installed for limiting movement. A return spring 347 is wound around the outer end of the movable locking plate 346. One end of the return spring 347 is fixedly connected to the movable locking plate 346, and the other end of the return spring 347 is fixedly connected to the first clamping plate 341. On the side of the two movable locking plates 346 that are close to each other, a locking bevel 3461 is opened to engage with a ratchet 345. The teeth of the locking bevel 3461 face to the left. The second clamping plate 342 is lower than the first clamping plate 341, so as to adapt to the height contour of the human thigh and calf.

[0030] When the present invention is used, after the injured person's leg is placed in the support plate 31, the foot support plate 32 is horizontally set. Then, the foot support plate 32 is rotated upward. The rotation of the foot support plate 32 drives the ratchet 331 to rotate together. The rotation of the ratchet 331 will lift the end of the pawl 332. The end of the pawl 332 will compress the second compression spring 333. Whenever the ratchet 331 rotates through a certain angle, the second compression spring 333 returns to its original position and drives the end of the pawl 332 to reset, so that the end of the pawl 332 is re-engaged with the ratchet 331, preventing the ratchet 331 from driving the foot support plate 32 to rotate downward until the injured person's foot can fit against the left end of the foot support plate 32. Then, the elastic strap 4 provided on the foot support plate 32 is used to fix the injured person's foot to the foot support plate 32. Then, based on the thickness of the injured person's leg, the corresponding drive knob 3410 is rotated first, causing the bidirectional lead screw 348 to rotate, thereby moving the two first clamps 341 in the front and rear directions closer together until the second clamp 342 is close to the thigh. Then, the second clamp 342 is pulled to the right, causing the second clamp 342 to move horizontally to the right along with the slider of the guide rail slider assembly 343. During the movement, the ratchet 345 will squeeze the moving plate 346 and stretch the return spring 347. Whenever the second clamp 342 moves a certain distance to the right, the return spring 347 will return to its original position, causing the moving plate 346 to return to its original position, so that the locking inclined surface 3461 re-engages with the ratchet 345, thereby preventing the second clamp 342 from returning to the left, until the right end of the second clamp 342 moves to the injured person's ankle. After that, the elastic straps 4 on the front and rear sides of the support plate 31 are wrapped around the first clamps 341 and the second clamp 342 on the front and rear sides, thereby achieving the limitation and fixation of the injured person's leg.

[0031] The above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit it. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions will not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A safe protective transport device for traffic accident victims, comprising a transfer bed (1), characterized in that: It also includes an automatic head locking mechanism (2), an anti-twist leg fixation mechanism (3), elastic straps (4) and Velcro (5); the top left side of the transfer bed (1) is equipped with an automatic head locking mechanism (2) for automatically limiting and fixing the head of the injured person; the top right side of the transfer bed (1) is equipped with an anti-twist leg fixation mechanism (3) for fixing the legs of the injured person to prevent secondary injury caused by leg twisting. The anti-torsion leg fixing mechanism (3) includes a support plate (31), a foot support plate (32), a rotation self-locking mechanism (33), and a multi-level folding limiting mechanism (34); the two support plates (31) are symmetrically fixedly installed at the front and rear ends of the right side of the top of the transfer bed (1); the foot support plate (32) is rotatably installed at the right end of the support plate (31); the rotation self-locking mechanism (33) is installed on the right side of the support plate (31) and connected to the foot support plate (32); the multi-level folding limiting mechanism (34) is installed on the transfer bed (1); Elastic straps (4) are fixedly installed on the left side of the front and rear ends of the transfer bed (1); and elastic straps (4) are also fixedly installed on the front and rear ends of the support plate (31) and the foot support plate (32); Velcro (5) is fixedly installed on the elastic straps (4); and the two corresponding elastic straps (4) are glued and fixed by Velcro (5).

2. The vehicle accident victim safety protection and transfer device according to claim 1, characterized in that, The automatic head locking mechanism (2) includes a contact component and a clamping component; the contact component is connected to the transfer bed (1); the clamping components are connected to both the contact component and the transfer bed (1).

3. The safe transport device for traffic accident victims according to claim 2, characterized in that, The contact assembly includes a contact clamping block (21), a fixed pull rod (22), a first compression spring (23), and a guide rod (28); the contact clamping block (21) is slidably mounted on the top left side of the transfer bed (1); the fixed pull rod (22) is fixedly mounted on the bottom left side of the transfer bed (1); the guide rod (28) is fixedly mounted on the bottom of the contact clamping block (21); the guide rod (28) is slidably connected to the fixed pull rod (22); the first compression spring (23) is wound around the lower side of the outer wall of the guide rod (28); one end of the first compression spring (23) is fixedly connected to the inner bottom wall of the fixed pull rod (22); the other end of the first compression spring (23) is fixedly connected to the top of the outer wall of the guide rod (28); the contact clamping block (21) is connected to the clamping assembly.

4. The safe transport device for traffic accident victims according to claim 3, characterized in that, The clamping assembly includes push rods (24), rotating rods (25), and clamping fixing plates (26); the front and rear ends of the bottom of the contact pressing block (21) are respectively hinged to the ends of the two push rods (24) that are close to each other; the other ends of the two push rods (24) are respectively hinged to the bottom of the two rotating rods (25), and the two rotating rods (25) are symmetrically arranged front and rear; the top of the transfer bed (1) is symmetrically provided with clearance grooves (27) on the front and rear sides; the top of the rotating rod (25) extends through the interior of the clearance groove (27) to the outer side of the top of the transfer bed (1), and the middle part of the rotating rod (25) is hinged to the inner wall of the clearance groove (27); the tops of the front and rear rotating rods (25) are respectively hinged to the two sides of the two clamping fixing plates (26) that are far away from each other, and the two clamping fixing plates (26) are located on the front and rear sides of the contact pressing block (21).

5. The safe transport device for traffic accident victims according to claim 4, characterized in that, Rubber pads are fixedly installed on the side of the two clamping plates (26) that are close to each other.

6. The safe transport device for traffic accident victims according to claim 5, characterized in that, The rotating self-locking mechanism (33) includes a ratchet (331), a pawl (332), and a second compression spring (333); the ratchet (331) and the pawl (332) are both rotatably mounted on the right side of the two support plates (31) that are far apart from each other; one end of the ratchet (331) is engaged with one end of the pawl (332); one end of the second compression spring (333) is fixed to the other end of the pawl (332); the other end of the second compression spring (333) is fixed to the support plate (31); the central shaft of the ratchet (331) passes through the support plate (31) and is fixedly connected to the foot support plate (32).

7. The safe transport device for traffic accident victims according to claim 6, characterized in that, The multi-level folding limiting mechanism (34) includes a first clamping plate (341), a second clamping plate (342), a guide rail slider assembly (343), a ratchet (345), a moving clamping plate (346), a reset spring (347), a two-way lead screw (348), a receiving plate (349), and a drive knob (3410). The receiving plate (349) is fixedly installed at the bottom center of the transfer bed (1). The two ends of the two two-way lead screws (348) that are close to each other are rotatably connected to the two sides of the receiving plate (349). The two ends of the two two-way lead screws (348) that are far apart from each other are rotatably connected to the front and rear side walls of the transfer bed (1). The drive knob (3410) is also fixedly installed at the two ends of the two two-way lead screws (348) that are far apart from each other. A first clamping plate (341) is symmetrically distributed on the front and rear sides of the support plate (31), and both the front and rear first clamping plates (341) are limited and slidably installed on the top of the transfer bed (1); and the bottom center of the two front and rear first clamping plates (341) slides through the transfer bed (1) and is threadedly connected to the front and rear ends of the double-acting screw (348) respectively; the guide rails of the two guide rail slider assemblies (343) are symmetrically fixedly installed on the side of the front and rear first clamping plates (341) that are close to each other; the sliders of the two guide rail slider assemblies (343) are fixedly connected to the middle of the side of the two second clamping plates (342) that are far away from each other; multiple ratchet teeth (345) are fixedly installed linearly and equally spaced on the top of the side of the two front and rear second clamping plates (342); and the tooth surface of the ratchet teeth (345) faces to the right. On the right side of the two first clamping plates (341) that are far apart, a movable clamping plate (346) is slidably installed. A reset spring (347) is wound around the outer end of the movable clamping plate (346). One end of the reset spring (347) is fixedly connected to the movable clamping plate (346). The other end of the reset spring (347) is fixedly connected to the first clamping plate (341). On the side of the two movable clamping plates (346) that are close to each other, a snapping bevel (3461) is opened to engage with the ratchet (345). The tooth surface of the snapping bevel (3461) faces to the left.

8. The safe transport device for traffic accident victims according to claim 7, characterized in that, The height of the second clamping plate (342) is lower than that of the first clamping plate (341).

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