Two-way stretching telescopic folding type high-strength portable stretcher
By incorporating Oxford cloth, a sliding mechanism, and hinges into the stretcher design, bidirectional stretching and telescoping are achieved, solving the problems of insufficient adaptability and portability of existing stretchers in emergency situations, and improving emergency rescue efficiency and patient safety and comfort.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-31
- Publication Date
- 2026-03-03
AI Technical Summary
When used in emergency situations, existing stretchers are difficult to adapt to different space sizes through structural changes, resulting in low adaptability to different scenarios, inability to effectively complete emergency rescue tasks, and easy damage and inconvenience during transportation.
Made primarily of Oxford cloth, and incorporating a sliding mechanism, outer and inner sleeves, fastening straps, and handwheels, the stretcher allows for bidirectional stretching and telescoping. Stable positioning is achieved through the cooperation of guide grooves and spring buckles, while the hinges enable folding, enhancing portability and stability.
It enables quick adjustment and convenient operation of the stretcher in confined spaces, improves carrying and transportation efficiency, ensures patient safety and comfort, and enhances ease of use and stability in emergency situations.
Smart Images
Figure CN223958946U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of stretcher technology, specifically relating to a bidirectional stretchable telescopic folding high-strength portable stretcher. Background Technology
[0002] Emergency stretchers, when used in certain emergency situations, are limited by the size of the space and the structure of the stretcher itself. This makes it difficult to adapt the stretcher to different spaces through structural changes, resulting in low adaptability and hindering its effectiveness in emergency care. For example, in harsh wilderness rescues, due to the long distances involved, stretcher transport requires multiple people working together. During transport, environmental factors cause the stretcher's surface to accumulate impurities and bacteria, and it may also collide with trees, resulting in damage. In such cases, the stretcher needs to be folded or retracted into a specific structure to achieve portability and improve emergency response efficiency. However, currently available stretchers can only be folded simply and cannot be folded in a way that reduces their size for easier carrying. Utility Model Content
[0003] The purpose of this utility model is to provide a bidirectional stretchable folding high-strength portable stretcher to solve the technical defect of existing stretchers that can only be folded simply and cannot reduce the size of the stretcher for easy carrying through folding.
[0004] To achieve the above objectives, the present invention adopts the following technical solution:
[0005] A bidirectional stretchable folding high-strength portable stretcher includes:
[0006] Oxford cloth, with guide sliding devices on opposite sides, and the two guide sliding devices are connected by a fastening strap; wherein, the guide sliding devices extend or retract along the entire length of the Oxford cloth;
[0007] The guide slide device includes a first guide slide assembly and a second guide slide assembly, and the first guide slide assembly and the second guide slide assembly are connected by a folding hinge;
[0008] A lateral retraction positioning component is disposed between the two folding hinges;
[0009] The handwheel is located at the end opposite to the first guide slide assembly and the second guide slide assembly.
[0010] Furthermore, the first guide tube assembly includes an outer sleeve and an inner sleeve. Multiple outer sleeves are provided, and the multiple outer sleeves are connected in sequence through the inner sleeves. The diameters of two adjacent outer sleeves are different.
[0011] The outer sleeve and inner sleeve are high-strength fiber tubes, and the handwheel is equipped with a rubber expansion sleeve, which is connected to the end of the inner sleeve.
[0012] Furthermore, the outer sleeve is provided with positioning holes and guide grooves on its surface, one end of the guide groove is slidably connected to the outer sleeve, and the other end is connected to the inner sleeve;
[0013] The guide groove is provided with a spring clip, which cooperates with the positioning hole.
[0014] Furthermore, the spring clip and the positioning hole are axially aligned.
[0015] Furthermore, the fastening straps are symmetrically arranged on the Oxford cloth, and each end of the two fastening straps is provided with a limiting ring, which is sleeved on the guide sliding device.
[0016] Furthermore, multiple fastening straps are arranged at intervals along the entire length of the Oxford cloth.
[0017] Furthermore, the folding hinge includes a first hinge and a second hinge, the first hinge being disposed at one end of the first guide slide assembly near the second guide slide assembly, and the second hinge being disposed at one end of the second guide slide assembly near the first guide slide assembly, and the first hinge and the second hinge being hinged together.
[0018] Furthermore, the first guide slide assembly and the second guide slide assembly have the same structure.
[0019] Furthermore, the lateral retraction positioning component includes a first cross brace and a second cross brace, which are connected by a limiting buckle.
[0020] The first cross brace is installed on a guide device on one side of the Oxford cloth, and the second cross brace is installed on a guide device on the other side of the Oxford cloth.
[0021] Furthermore, both the first and second cross braces are slidably connected to the limiting buckle.
[0022] Compared with the prior art, the present invention has the following beneficial effects:
[0023] 1. Oxford cloth is used as the main material of the stretcher, making it lightweight and durable. The sliding mechanism allows the stretcher to easily extend or retract along the length of the cloth, greatly enhancing its portability. Whether in confined spaces or in emergencies, the stretcher's size can be quickly adjusted for easy carrying and transport. The handwheel allows users to easily adjust the sliding mechanism, thus controlling the stretcher's extension and retraction, improving operational convenience.
[0024] 2. The outer and inner sleeves are made of high-strength fiber tubing. This material has excellent tensile strength and rigidity, capable of withstanding large loads without deformation or breakage. This ensures the stretcher maintains a stable structural shape during extension, retraction, or folding, providing reliable support for the patient. Multiple outer sleeves are connected sequentially by inner sleeves, and adjacent outer sleeves have different diameters. This not only enhances the longitudinal stability of the stretcher but also allows for smoother and more continuous extension and retraction, avoiding jamming or instability caused by sudden changes in size.
[0025] 3. One end of the guide groove is slidably connected to the outer sleeve, and the other end is connected to the inner sleeve, ensuring the directionality and stability of the inner sleeve when it extends and retracts within the outer sleeve. The guide groove acts as a guide, preventing the inner sleeve from shifting or wobbling during extension and retraction. The cooperation between the spring clip and the positioning hole allows the spring clip to automatically engage with the positioning hole when the stretcher is extended or retracted to a specific position, achieving stable positioning and ensuring that the stretcher maintains a stable shape when extended or retracted to the required length, and will not easily change due to external forces.
[0026] 4. The axially coincident design ensures that the spring buckle can be accurately aligned and locked into the positioning hole during the extension and retraction process, so that the stretcher can remain stable when it is extended or retracted to a specific length and will not easily shift due to external force.
[0027] 5. Symmetrically arranged fastening straps evenly distribute the load on the stretcher, preventing deformation or tilting due to uneven load, enhancing the stretcher's stability during transport, and providing safer and more comfortable support for the patient. Limiting rings fitted onto the guide slide effectively restrict the movement of the guide slide on the Oxford cloth, preventing accidental slippage or loosening of the stretcher during extension, retraction, or folding, further improving stretcher safety.
[0028] 6. Multiple fastening straps are spaced apart along the entire length of the Oxford cloth, which can distribute the load on the stretcher more evenly and avoid stretcher deformation or patient discomfort caused by single point or local stress. This ensures that the stretcher provides stable and even support throughout its length, improving patient comfort.
[0029] 7. By rotating these two hinges, the first and second guide slide components can be folded relative to each other, thereby greatly reducing the size of the stretcher and making it easier to carry and store. Attached Figure Description
[0030] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.
[0031] Figure 1 Top view of the bidirectional stretchable folding high-strength portable stretcher provided by this utility model;
[0032] Figure 2 A three-dimensional schematic diagram of the bidirectional stretchable folding high-strength portable stretcher provided by this utility model;
[0033] Figure 3 Side view of the transverse retraction positioning component in the bidirectional stretchable folding high-strength portable stretcher provided by this utility model;
[0034] Figure 4 A schematic diagram of the first and second guide slide components folded in the bidirectional stretchable telescopic folding high-strength portable stretcher provided by this utility model.
[0035] Figure 5 A schematic diagram of the retraction of the first guide slide component in the bidirectional stretchable folding high-strength portable stretcher provided by this utility model.
[0036] Figure 6 A schematic diagram showing the positioning of the first guide slide component in the bidirectional stretchable telescopic folding high-strength portable stretcher provided by this utility model.
[0037] Figure 7 A schematic diagram of the guide groove in the bidirectional stretchable folding high-strength portable stretcher provided by this utility model;
[0038] Figure 8 A schematic diagram showing the installation of the handwheel in the bidirectional stretchable telescopic folding high-strength portable stretcher provided by this utility model.
[0039] Figure 9 A schematic diagram of the transverse shrinkage positioning component in the bidirectional stretchable folding high-strength portable stretcher provided by this utility model.
[0040] Figure 10 A schematic diagram of the folding hinge in the bidirectional stretchable folding high-strength portable stretcher provided by this utility model.
[0041] The components include: 1. Guide slide device; 2. Oxford cloth; 3. Folding hinge; 4. Lateral retraction positioning component; 5. First hinge; 6. Second hinge; 7. Rotating shaft; 8. First cross brace; 9. Second cross brace; 10. Limiting buckle; 11. Outer sleeve; 12. Inner sleeve; 13. Guide groove; 14. Spring buckle; 15. Limiting ring; 16. Rubber expansion sleeve; 17. Handwheel. Detailed Implementation
[0042] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.
[0043] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.
[0044] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.
[0045] In the description of the embodiments of this utility model, it should be noted that if terms such as "upper," "lower," "horizontal," or "inner" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the utility model product is in use, they are only for the convenience of describing the utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the utility model. Furthermore, terms such as "first" and "second" are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.
[0046] Furthermore, the use of the term "horizontal" does not imply that the component must be absolutely horizontal, but rather that it can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal than "vertical," and does not mean that the structure must be completely horizontal, but can be slightly tilted.
[0047] Emergency stretchers, when used in certain emergency situations, are limited by the size of the space and the structure of the stretcher itself. This makes it difficult to adapt the stretcher to different spaces through structural changes, resulting in low adaptability and hindering its effectiveness in emergency care. For example, in harsh wilderness rescues, due to the long distances involved, stretcher transport requires multiple people working together. During transport, environmental factors cause the stretcher's surface to accumulate impurities and bacteria, and it may also collide with trees, resulting in damage. In such cases, the stretcher needs to be folded or retracted into a specific structure to achieve portability and improve emergency response efficiency. However, currently available stretchers can only be folded simply and cannot be folded in a way that reduces their size for easier carrying.
[0048] In order to overcome the above-mentioned technical defects, the inventors have provided a bidirectional stretchable folding high-strength portable stretcher.
[0049] The present invention will now be described in further detail with reference to the accompanying drawings:
[0050] like Figures 1-10 As shown in the figure, this utility model embodiment provides a bidirectional stretchable folding high-strength portable stretcher, comprising: Oxford cloth 2, with guide sliding devices 1 on opposite sides, the two guide sliding devices 1 being connected by a fastening strap; wherein, the guide sliding devices 1 extend or retract along the length of the Oxford cloth 2; the guide sliding device 1 includes a first guide sliding component and a second guide sliding component, the first guide sliding component and the second guide sliding component being connected by a folding hinge 3; a lateral retraction positioning component 4, disposed between the two folding hinges 3; and a handwheel 17, disposed at the end opposite to the first guide sliding component and the second guide sliding component. Oxford cloth 2, as the main material of the stretcher, is lightweight and durable. The design of the guide sliding device 1 allows the stretcher to easily extend or retract along the length of the Oxford cloth 2, greatly enhancing the portability of the stretcher. Whether in confined spaces or in emergency situations, the size of the stretcher can be quickly adjusted for easy carrying and transportation. The handwheel 17 allows the user to easily adjust the guide sliding device 1, thereby controlling the extension and retraction of the stretcher, improving operational convenience.
[0051] like Figure 1 and Figure 6As shown, the first guide tube assembly includes an outer sleeve 11 and an inner sleeve 12. Multiple outer sleeves 11 are provided, and they are sequentially connected by inner sleeves 12. The diameters of adjacent outer sleeves 11 are different. Both the outer sleeves 11 and inner sleeves 12 are high-strength fiber tubes. A rubber expansion sleeve 16 is provided on the handwheel 17, and the rubber expansion sleeve 16 is connected to the end of the inner sleeve 12. In this structure, because the outer sleeves 11 and inner sleeves 12 are made of high-strength fiber tubes, they possess excellent tensile strength and rigidity, capable of withstanding large loads without deformation or damage. This ensures that the stretcher maintains a stable structural shape during extension, retraction, or folding, providing reliable support for the patient. The sequential connection of multiple outer sleeves 11 via inner sleeves 12, with adjacent outer sleeves 11 having different diameters, not only enhances the longitudinal stability of the stretcher but also allows for smoother and more continuous extension or retraction, avoiding jamming or instability caused by sudden changes in size. In terms of operation, the rubber expansion sleeve 16 on the handwheel 17 provides a softer and more comfortable feel, reducing hand fatigue during prolonged use. The rubber expansion sleeve 16 connects to the end of the inner sleeve 12, enhancing the connection between the handwheel 17 and the inner sleeve 12. This also allows users to easily control the extension and retraction of the inner sleeve 12 by rotating the handwheel 17, thus extending or retracting the stretcher. The operation is simple, intuitive, and easy to master. Furthermore, the precise fit between the outer sleeve 11 and the inner sleeve 12 effectively prevents external impurities such as dust and moisture from entering the stretcher, extending its lifespan. Finally, because both the outer sleeve 11 and the inner sleeve 12 are high-strength fiber tubes, and adjacent outer sleeves 11 have different diameters, the stretcher maintains high strength and stability while also possessing a degree of flexibility and adaptability. This allows it to better adapt to different patient body shapes and postures, providing a more fitting and comfortable support.
[0052] like Figure 6 and Figure 7As shown, the outer sleeve 11 has a positioning hole and a guide groove 13 on its surface. One end of the guide groove 13 is slidably connected to the outer sleeve 11, and the other end is connected to the inner sleeve 12. A spring clip 14 is provided on the guide groove 13, and the spring clip 14 cooperates with the positioning hole. The slidable connection between one end of the guide groove 13 and the outer sleeve 11, and the connection between the other end of the guide groove 13 and the inner sleeve 12, ensures the directionality and stability of the inner sleeve 12 when it extends and retracts within the outer sleeve 11. The guide groove 13 acts as a guide, preventing the inner sleeve 12 from shifting or shaking during the extension and retraction process. The cooperation between the spring clip 14 and the positioning hole allows the spring clip 14 to automatically engage in the positioning hole when it is extended or retracted to a specific position, achieving stable positioning and ensuring that the stretcher maintains a stable shape when extended or retracted to the required length, and will not be easily changed by external forces. In operation, the inner sleeve 12 can slide axially along the guide groove 13. When it slides to the right, it is stopped by the limiting ring 15 on the Oxford cloth 2. When it slides to the left, it reaches the position of the spring clip 14. The spring clip 14 then engages with the hole in the outer sleeve 11, achieving positioning. The user only needs to gently push or pull the inner sleeve 12 to extend or retract the stretcher. When the stretcher length needs to be locked, the spring clip 14 automatically engages with the nearest positioning hole, eliminating the need for additional locking operations and greatly simplifying the process. If the stretcher length needs to be adjusted, the user only needs to slightly overcome the elasticity of the spring clip 14 to allow the inner sleeve 12 to slide within the guide groove 13, achieving length adjustment and making stretcher extension and retraction very convenient. In the above structure, the design of the positioning hole and guide groove 13 not only achieves the extension and retraction positioning function but also enhances the connection strength between the outer sleeve 11 and the inner sleeve 12. As part of the structure, the guide groove 13 disperses the stress generated during the extension and retraction of the inner sleeve 12, preventing structural damage caused by stress concentration. The tight fit between the spring clip 14 and the positioning hole increases the overall structural stability of the stretcher, maintaining its structural integrity even under heavy loads. The design of the guide groove 13 and the spring clip 14 reduces wear and loosening during use. Furthermore, as a replaceable component, the spring clip 14 can be easily replaced even after prolonged wear, extending the stretcher's service life.
[0053] In this embodiment, the spring clip 14 and the positioning hole are axially aligned, ensuring that the spring clip 14 can accurately align and engage with the positioning hole during extension and retraction. This precise positioning capability allows the stretcher to remain stable when extended or retracted to a specific length and will not easily shift due to external forces. When the spring clip 14 engages with the positioning hole, the axial alignment maximizes the contact area between the spring clip 14 and the positioning hole, thereby enhancing the structural stability of the connection and helping to prevent the stretcher from loosening or deforming due to vibration or external impact during use. The axial alignment design eliminates the need for users to adjust the position or direction of the spring clip 14 during extension and retraction; they can simply push or pull the inner sleeve 12. This simplified operation improves the ease of use of the stretcher, especially important in emergency rescue and other situations requiring rapid response. Furthermore, the axial alignment between the spring clip 14 and the positioning hole reduces friction and wear, helping to extend the stretcher's service life and reducing the risk of performance degradation or malfunction due to wear.
[0054] As shown in the diagram, the fastening straps are symmetrically arranged on the Oxford cloth 2. Each end of the two fastening straps has a limiting ring 15, which is fitted onto the guide sliding device 1. Multiple fastening straps are spaced apart along the length of the Oxford cloth 2. This symmetrical arrangement of the fastening straps evenly distributes the load on the stretcher, preventing deformation or tilting due to uneven load, enhancing the stability of the stretcher during transport, and providing safer and more comfortable support for the patient. The limiting rings 15, fitted onto the guide sliding device 1, effectively limit the range of movement of the guide sliding device 1 on the Oxford cloth 2, preventing accidental slippage or loosening of the stretcher during extension, retraction, or folding, further improving the safety of the stretcher. The design of the fastening straps allows users to easily adjust the width and tightness of the stretcher to accommodate different patient body shapes and needs. By adjusting the length of the fastening straps, users can ensure that the stretcher fits closely to the patient's body, providing effective support and fixation. The limiting ring 15, serving as the connecting component between the fastening strap and the guide device 1, not only enhances the strength of the connection but also makes the adjustment process more convenient. Users can fix and adjust the stretcher simply by tightening or loosening the fastening strap. Figure 2 As shown, multiple fastening straps are spaced apart along the entire length of the Oxford cloth 2, which can more evenly distribute the load on the stretcher, avoiding stretcher deformation or patient discomfort caused by single-point or localized stress. This ensures that the stretcher provides stable and uniform support throughout its entire length, improving patient comfort. Furthermore, the multiple fastening straps work together to enhance the stability of the stretcher during transport. Even when encountering bumpy or uneven surfaces, the multiple fastening straps can effectively prevent the patient from slipping off the stretcher or shifting, ensuring patient safety.
[0055] like Figure 4 As shown, the folding hinge 3 includes a first hinge 5 and a second hinge 6. The first hinge 5 is located at the end of the first guide slide assembly near the second guide slide assembly, and the second hinge 6 is located at the end of the second guide slide assembly near the first guide slide assembly. The first hinge 5 and the second hinge 6 are hinged together by a pivot 7. The first guide slide assembly and the second guide slide assembly have the same structure. By rotating these two hinges, the first guide slide assembly and the second guide slide assembly can be folded relative to each other, thereby significantly reducing the size of the stretcher, making it easier to carry and store. The folded stretcher is compact and can be easily placed in a backpack or the trunk of a vehicle, greatly improving the portability of the stretcher, which is especially important for emergency rescue scenarios or outdoor adventure activities that require rapid response.
[0056] like Figure 3 and Figure 9 As shown, the lateral shrinkage positioning component 4 includes a first cross brace 8 and a second cross brace 9, which are connected by a limiting buckle 10. The first cross brace 8 is mounted on a guide sliding device 1 on one side of the Oxford cloth 2, and the second cross brace 9 is mounted on a guide sliding device 1 on the other side of the Oxford cloth 2. Both the first and second cross braces 8 and 9 are slidably connected to the limiting buckle 10. The first and second cross braces 8 and 9, respectively mounted on the guide sliding devices 1 on both sides of the Oxford cloth 2, form a stable support structure. This double-sided support effectively prevents the Oxford cloth 2 from shifting or swaying during lateral shrinkage, ensuring its stability and safety. Through the connection of the limiting buckle 10, the first and second cross braces 8 and 9 can achieve a slidable connection. This means that users can easily adjust the distance between the two cross braces according to actual needs, thereby achieving precise control over the degree of lateral shrinkage of the Oxford cloth 2. Moreover, the design of the limiting buckle 10 not only simplifies the installation process but also makes disassembly equally easy. This quick connection / disconnection mechanism greatly improves work efficiency and reduces maintenance costs. It is worth noting that traditional sleeve guides use irregular or elliptical tubes, which are difficult and costly to process. The guide groove 13 of this utility model is made of thermoplastic plastic and is modified from a standard tube profile. Thermoplastic plastic also has a certain lubrication effect. The handwheel 17 is connected to the inner sleeve 12 with the smallest outer diameter by the rubber expansion sleeve 16, which prevents the hand from slipping. Tighten the screw in the rubber expansion sleeve 16, and the outer diameter of the rubber expansion sleeve 16 expands and is tightly connected to the inner diameter of the sleeve.
[0057] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and not to limit its protection scope. Although the utility model has been described in detail with reference to the above embodiments, those skilled in the art should understand that after reading this utility model, they can still make various changes, modifications or equivalent substitutions to the specific implementation of the utility model, but these changes, modifications or equivalent substitutions are all within the protection scope of the pending claims of the utility model.
Claims
1. A bidirectional stretchable, telescopic, foldable, high-strength portable stretcher, characterized in that, include: Oxford cloth (2), with guide devices (1) on opposite sides, and the two guide devices (1) are connected by fastening straps; wherein, the guide devices (1) extend or retract along the length of the Oxford cloth (2); The guide device (1) includes a first guide component and a second guide component, and the first guide component and the second guide component are connected by a folding hinge (3); A lateral retraction positioning component (4) is disposed between the two folding hinges (3); The handwheel (17) is located at the end opposite to the first guide slide assembly and the second guide slide assembly.
2. The bidirectional tensile telescopic folding high-strength portable stretcher according to claim 1, characterized in that, The first guide tube assembly includes an outer tube (11) and an inner tube (12). There are multiple outer tubes (11), which are connected in sequence through the inner tubes (12). The diameters of two adjacent outer tubes (11) are different. The outer sleeve (11) and inner sleeve (12) are high-strength fiber tubes, and the handwheel (17) is provided with a rubber expansion sleeve (16), which is connected to the end of the inner sleeve (12).
3. The bidirectional tensile telescopic folding high-strength portable stretcher according to claim 2, characterized in that, The outer sleeve (11) has a positioning hole and a guide groove (13) on its surface. One end of the guide groove (13) is slidably connected to the outer sleeve (11), and the other end is connected to the inner sleeve (12). The guide groove (13) is provided with a spring buckle (14), which cooperates with the positioning hole.
4. The bidirectional tensile telescopic folding high-strength portable stretcher according to claim 3, characterized in that, The spring clip (14) and the positioning hole are axially aligned.
5. The bidirectional tensile telescopic folding high-strength portable stretcher according to claim 1, characterized in that, The fastening bands are symmetrically arranged on the Oxford cloth (2), and each end of the two fastening bands is provided with a limiting ring (15), which is sleeved on the guide sliding device (1).
6. The bidirectional tensile telescopic folding high-strength portable stretcher according to claim 5, characterized in that, The fastening bands are arranged in multiple intervals along the length of the Oxford cloth (2).
7. The bidirectional tensile telescopic folding high-strength portable stretcher according to claim 1, characterized in that, The folding hinge (3) includes a first hinge (5) and a second hinge (6). The first hinge (5) is located at one end of the first guide slide assembly near the second guide slide assembly, and the second hinge (6) is located at one end of the second guide slide assembly near the first guide slide assembly. The first hinge (5) and the second hinge (6) are hinged together.
8. The bidirectional tensile telescopic folding high-strength portable stretcher according to claim 1 or 7, characterized in that, The first guide slide assembly has the same structure as the second guide slide assembly.
9. The bidirectional tensile telescopic folding high-strength portable stretcher according to claim 1, characterized in that, The lateral retraction positioning component (4) includes a first cross brace (8) and a second cross brace (9), which are connected by a limiting buckle (10). The first cross brace (8) is installed on the guide device (1) on one side of the Oxford cloth (2), and the second cross brace (9) is installed on the guide device (1) on the other side of the Oxford cloth (2).
10. The bidirectional tensile telescopic folding high-strength portable stretcher according to claim 9, characterized in that, The first cross brace (8) and the second cross brace (9) are both slidably connected to the limiting buckle (10).