Foldable earthquake rescue stretcher

Abstract

The utility model relates to rescue stretcher technical field discloses a folding earthquake rescue stretcher, including support pole no.

Description

Technical Field

[0001] This utility model relates to the field of rescue stretcher technology, and in particular to a folding earthquake rescue stretcher. Background Technology

[0002] During earthquake rescue operations, stretchers are crucial tools for transferring the injured. Their stability and portability directly impact rescue efficiency and the safety of the injured. Traditional stretchers often employ fixed structures or simple folding designs, making them unsuitable for complex and ever-changing rescue environments. Especially in the context of frequent aftershocks and confined spaces in rubble, rescuers need to quickly deploy and store stretchers to ensure the stable transfer of the injured. However, existing stretchers have significant shortcomings in terms of structural stability and rapid folding, which can easily lead to delays in rescue efforts due to mechanical loosening or cumbersome operation. Therefore, developing a rescue stretcher that combines rapid locking and convenient folding has become an important research direction for improving earthquake rescue efficiency.

[0003] Currently, most common rescue stretchers use mechanical structures with hinges or pins for unfolding and folding. For example, some stretchers combine metal rods with fabric and rely on manual pins or bolts to lock the unfolded state. Their stability depends on the tightness of the threaded fasteners. Other folding stretchers use simple hinges with buckles and folding joints. However, the buckles are prone to coming loose due to vibration or load. In addition, protective components (such as side rails) are often fixed by welding or bolts and cannot be quickly disassembled, resulting in a large space occupation when stored. Although these structures can achieve basic functions, they rely on manual operation and lack a self-locking mechanism, making it difficult to meet the needs of efficient rescue.

[0004] Existing stretchers have significant deficiencies in stability after deployment. Traditional locking mechanisms (such as pins or bolts) are prone to loosening due to bumps or vibrations during transport, leading to accidental folding of the stretcher joints. For example, the connections between metal rods lack elastic self-locking devices and rely solely on friction or threads for fixation. Under prolonged heavy loads or bumpy conditions, they will gradually slip out. This problem not only increases the risk of the injured falling but can also cause secondary injuries due to stretcher structural failure. Especially in earthquake-stricken areas with damaged roads and complex terrain, stretchers need to be adjusted frequently. The traditional structure's resistance to loosening is insufficient, severely restricting the safety and reliability of rescue efforts. Therefore, a folding earthquake rescue stretcher is proposed to solve the above problems. Utility Model Content

[0005] To overcome the above shortcomings, this utility model provides a foldable earthquake rescue stretcher, which aims to improve the problems of traditional stretchers in the prior art being easy to loosen and structurally unstable after unfolding.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: a folding earthquake rescue stretcher, comprising a support rod one and a support rod two, wherein a fixing rod is fixedly connected to one end of both the support rod one and the support rod two, and a connecting component is provided on the outer wall of the fixing rod;

[0007] The connecting assembly includes a connecting rod and a rotating rod. The outer wall of the rotating rod is fixedly connected to the inside of the fixed rod, and the outer wall of the rotating rod is rotatably connected to the inside of the connecting rod. The outer wall of the fixed rod has a locking hole. A trapezoidal block is slidably connected inside the connecting rod, and the trapezoidal block engages with the locking hole. A limit plate is fixedly connected to the side wall of the trapezoidal block, and the outer wall of the limit plate is slidably connected to the inside of the connecting rod. A sliding rod is fixedly connected to the side wall of the limit plate, and the outer wall of the sliding rod is slidably connected to the inside of the connecting rod. A pull ring is fixedly connected to one end of the sliding rod, and a spring is provided on the outer wall of the sliding rod. Protective components are provided at the top of both the first and second support rods.

[0008] As a further description of the above technical solution:

[0009] One end of the spring is fixedly connected to the side wall of the limiting plate, and the other end of the spring is fixedly connected to the inner wall of the connecting rod.

[0010] As a further description of the above technical solution:

[0011] The protective assembly includes multiple connecting blocks, multiple fixed blocks, and multiple rotating blocks, with the bottom of each of the multiple connecting blocks fixedly connected to the top of the first and second support rods.

[0012] As a further description of the above technical solution:

[0013] The bottom of the fixed block is fixedly connected to the top of the connecting block, and the outer wall of the rotating block is rotatably connected to the inner wall of the fixed block.

[0014] As a further description of the above technical solution:

[0015] The top of the rotating block is rotatably connected to a fixed block two, and the top of the fixed block two is fixedly connected to a connecting frame.

[0016] As a further description of the above technical solution:

[0017] A hollow block is fixedly connected to the bottom of the connecting frame, a fixing plate is fixedly connected to the outer wall of the rotating block, and a sliding block is slidably connected to the inner wall of the hollow block.

[0018] As a further description of the above technical solution:

[0019] A locking post is fixedly connected to the bottom of the sliding block, and the outer wall of the locking post engages with the inner wall of the fixing plate.

[0020] As a further description of the above technical solution:

[0021] A second spring is installed inside the hollow block. One end of the second spring is fixedly connected to the bottom of the connecting frame, and the other end of the second spring is fixedly connected to the top of the sliding block.

[0022] This utility model has the following beneficial effects:

[0023] 1. In this utility model, by pulling apart support rod one and support rod two, the side wall of the fixed rod squeezes the trapezoidal block, which causes the limiting plate to squeeze the spring one and the sliding rod inside the connecting rod. When the trapezoidal block reaches the locking hole position, the spring one releases elastic potential energy, pushing the limiting plate and the trapezoidal block into the locking hole, thereby achieving rapid locking of the fixed rod. This solves the problem of traditional stretchers being easy to loosen and structurally unstable after unfolding, avoids secondary injury to the wounded due to accidental folding of the stretcher during transportation, and improves the stability of the stretcher during rescue use.

[0024] 2. In this utility model, the sliding block is pulled upward to slide inside the hollow block and squeeze the second spring. The locking post then releases its restriction on the fixing plate. At this time, the protective component can be quickly folded by simply pulling the connecting frame to the side. This solves the problem that traditional stretcher protective structures are difficult to fold and store, avoids transportation inconvenience and space waste caused by the excessive size of the protective structure, and improves the portability and storage efficiency of the stretcher. Attached Figure Description

[0025] Figure 1 This is a three-dimensional schematic diagram of a folding earthquake rescue stretcher proposed in this utility model;

[0026] Figure 2 This is a schematic diagram of the connecting rod structure of a folding earthquake rescue stretcher proposed in this utility model;

[0027] Figure 3 for Figure 2 Enlarged view of point A in the middle;

[0028] Figure 4 This is a schematic diagram of the connecting block structure of a folding earthquake rescue stretcher proposed in this utility model;

[0029] Figure 5 for Figure 4 Enlarged view of point B in the middle.

[0030] Legend:

[0031] 1. Support rod one; 2. Support rod two; 3. Fixed rod; 4. Connecting rod; 5. Locking hole; 6. Rotating rod; 7. Trapezoidal block; 8. Limiting plate; 9. Sliding rod; 10. Pull ring; 11. Spring one; 12. Connecting block; 13. Fixed block one; 14. Rotating block; 15. Connecting frame; 16. Fixed block two; 17. Fixed plate; 18. Hollow block; 19. Sliding block; 20. Locking post; 21. Spring two. Detailed Implementation

[0032] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0033] Reference Figures 1-3 The present invention provides an embodiment of a foldable earthquake rescue stretcher, comprising a support rod 1 and a support rod 2. The support rod 1 and the support rod 2 serve as the main support frame of the stretcher, used to bear the weight of the injured and maintain the overall structural strength. One end of each support rod 1 and the support rod 2 is fixedly connected to a fixing rod 3. The fixing rod 3 serves as a connecting hub, used to realize the rigid connection between the support rod and the connecting component. The outer wall of the fixing rod 3 is provided with a connecting component, used to realize the folding and unfolding functions of the stretcher.

[0034] The connecting assembly includes a connecting rod 4 and a rotating rod 6. The connecting rod 4 serves as the main body of the connecting mechanism, accommodating and supporting the various moving parts. The outer wall of the rotating rod 6 is fixedly connected to the inside of the fixed rod 3, transmitting rotational motion. The outer wall of the rotating rod 6 is rotatably connected to the inside of the connecting rod 4, allowing support rod 1 and support rod 2 to rotate relative to each other. The outer wall of the fixed rod 3 has a locking hole 5, providing a locking position in the unfolded state. A trapezoidal block 7 is slidably connected inside the connecting rod 4. The trapezoidal block 7 is a key component of the locking mechanism; its inclined surface design facilitates automatic engagement. The trapezoidal block 7 engages with the locking hole 5, achieving automatic locking after the stretcher is unfolded. A limit plate 8 is fixedly connected to the side wall of the trapezoidal block 7 to restrict the trapezoidal shape. The movement range of block 7 is such that the outer wall of the limiting plate 8 is slidably connected to the inside of the connecting rod 4 to ensure smooth movement. The side wall of the limiting plate 8 is fixedly connected to a sliding rod 9, which serves as an operating link to transmit external force. The outer wall of the sliding rod 9 is slidably connected to the inside of the connecting rod 4 to ensure accurate movement trajectory. One end of the sliding rod 9 is fixedly connected to a pull ring 10 for easy manual unlocking. The outer wall of the sliding rod 9 is provided with a spring 11 to provide reset elasticity and maintain the locked state. The tops of support rod 1 and support rod 2 are both equipped with protective components to prevent the injured from sliding sideways. One end of the spring 11 is fixedly connected to the side wall of the limiting plate 8, and the other end is fixedly connected to the inner wall of the connecting rod 4 to form a stable elastic support system.

[0035] Reference Figures 4-5 The protective component includes multiple connecting blocks 12, which serve as connectors between the protective component and the support rods to ensure structural stability. The bottoms of the multiple connecting blocks 12 are fixedly connected to the tops of support rod 1 and support rod 2, achieving a rigid connection between the protective component and the main frame. The bottom of fixing block 13 is fixedly connected to the top of the connecting blocks 12, serving as the base component for rotational support. The outer wall of rotating block 14 is rotatably connected to the inner wall of fixing block 13, allowing the protective component to rotate. A fixing block 2 16 is rotatably connected to the top of rotating block 14, serving as a connecting transition piece to connect rotating block 14 and connecting frame 15. The top of fixing block 2 16 is fixedly connected to the connecting frame 15, which serves as the main frame of the guardrail, providing lateral protection. The bottom of connecting frame 15... A hollow block 18 is fixedly connected to the rotating block 14, serving as the housing for the sliding mechanism. A fixed plate 17 is fixedly connected to the outer wall of the rotating block 14, serving as a cooperating component of the locking mechanism. A sliding block 19 is slidably connected to the inner wall of the hollow block 18, serving as the execution component for the unlocking operation. A locking pin 20 is fixedly connected to the bottom of the sliding block 19, serving as a locking pin for fixing the position of the protective component. The outer wall of the locking pin 20 and the inner wall of the fixed plate 17 engage to achieve the unfolding and locking of the protective component. A second spring 21 is provided inside the hollow block 18, providing a reset force to maintain the locked state. One end of the second spring 21 is fixedly connected to the bottom of the connecting frame 15, and the other end is fixedly connected to the top of the sliding block 19, forming a stable elastic reset mechanism.

[0036] Working principle: When support rod 1 and support rod 2 are pulled apart, the fixed rod 3 moves with the support rods, and its side wall begins to compress the trapezoidal block 7 inside the connecting rod 4. The inclined surface design of the trapezoidal block 7 allows it to drive the limiting plate 8 to slide inside the connecting rod 4 when under pressure, thereby compressing the spring 11 and pushing the sliding rod 9 to move. When the fixed rod 3 moves to the position where the locking hole 5 is aligned with the trapezoidal block 7, the compressed spring 11 releases its elastic potential energy, pushing the limiting plate 8 and the trapezoidal block 7 to quickly lock into the locking hole 5. At this time, the pull ring 10 can be unlocked by pulling the sliding rod 9. The preload of the spring 11 maintains continuous pressure, ensuring a tight fit between the trapezoidal block 7 and the locking hole 5, preventing... If the stretcher is accidentally folded during transport, when folding is required, rescuers pull the sliding block 19 upwards, causing it to slide upwards inside the hollow block 18. The sliding block 19 drives the bottom locking post 20 to move upwards simultaneously, causing the locking post 20 to disengage from the locking position of the fixing plate 17. After the locking post 20 disengages from the fixing plate 17, the rotation restriction on the rotating block 14 is released. At this time, rescuers can pull the connecting frame 15 to the side, causing the entire protective assembly to rotate and fold around the fixing block 13 and the fixing block 2 16 as the axis. The rotation of the rotating block 14 inside the fixing block 13 and the rotation of the fixing block 2 16 on the rotating block 14 work together to ensure a smooth and stable folding process.

[0037] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A folding earthquake rescue stretcher, comprising a first support rod (1) and a second support rod (2), characterized in that: One end of each of the support rods (1) and the support rod (2) is fixedly connected to a fixing rod (3), and the outer wall of the fixing rod (3) is provided with a connecting component; The connecting assembly includes a connecting rod (4) and a rotating rod (6). The outer wall of the rotating rod (6) is fixedly connected to the inside of the fixed rod (3). The outer wall of the rotating rod (6) is rotatably connected to the inside of the connecting rod (4). The outer wall of the fixed rod (3) is provided with a locking hole (5). A trapezoidal block (7) is slidably connected inside the connecting rod (4). The trapezoidal block (7) and the locking hole (5) are engaged. A limit plate (8) is fixedly connected to the side wall of the trapezoidal block (7). The outer wall of the limit plate (8) is slidably connected to the inside of the connecting rod (4). A sliding rod (9) is fixedly connected to the side wall of the limit plate (8). The outer wall of the sliding rod (9) is slidably connected to the inside of the connecting rod (4). A pull ring (10) is fixedly connected to one end of the sliding rod (9). A spring (11) is provided on the outer wall of the sliding rod (9). Protective components are provided on the top of both the first support rod (1) and the second support rod (2).

2. The folding earthquake rescue stretcher according to claim 1, characterized in that: One end of the spring (11) is fixedly connected to the side wall of the limiting plate (8), and the other end of the spring (11) is fixedly connected to the inner wall of the connecting rod (4).

3. A folding earthquake rescue stretcher according to claim 1, characterized in that: The protective assembly includes multiple connecting blocks (12), multiple fixing blocks (13), and multiple rotating blocks (14). The bottom of each of the multiple connecting blocks (12) is fixedly connected to the top of the first support rod (1) and the second support rod (2).

4. A folding earthquake rescue stretcher according to claim 3, characterized in that: The bottom of the fixed block (13) is fixedly connected to the top of the connecting block (12), and the outer wall of the rotating block (14) is rotatably connected to the inner wall of the fixed block (13).

5. A folding earthquake rescue stretcher according to claim 3, characterized in that: The top of the rotating block (14) is rotatably connected to a fixed block two (16), and the top of the fixed block two (16) is fixedly connected to a connecting frame (15).

6. A folding earthquake rescue stretcher according to claim 5, characterized in that: The bottom of the connecting frame (15) is fixedly connected to a hollow block (18), the outer wall of the rotating block (14) is fixedly connected to a fixing plate (17), and the inner wall of the hollow block (18) is slidably connected to a sliding block (19).

7. A folding earthquake rescue stretcher according to claim 6, characterized in that: The bottom of the sliding block (19) is fixedly connected to a locking post (20), and the outer wall of the locking post (20) and the inner wall of the fixing plate (17) are engaged.

8. A folding earthquake rescue stretcher according to claim 6, characterized in that: The hollow block (18) is provided with a second spring (21). One end of the second spring (21) is fixedly connected to the bottom of the connecting frame (15), and the other end of the second spring (21) is fixedly connected to the top of the sliding block (19).

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