Foldable first-aid stretcher
By designing a foldable emergency stretcher cart, the problem of difficult transfer in narrow areas was solved, enabling rapid assembly and disassembly of the stretcher and safe support for the patient, reducing the labor intensity of medical staff and improving transfer efficiency.
Patent Information
- Application Number
- CN202511272850.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-09-08
- Publication Date
- 2026-01-02
AI Technical Summary
Existing medical stretchers are difficult to maneuver in narrow areas, making patient transfer difficult. In addition, ordinary stretchers are labor-intensive and pose high safety risks, and soft stretchers are not suitable for patients with fractures.
Design a foldable emergency stretcher cart that combines a base frame, a telescopic frame, and a folding frame to achieve stretcher folding, reduce length, and is equipped with support and connection components to provide patient support and quick assembly/disassembly.
It improves the stretcher's maneuverability in narrow areas, reduces the workload of medical staff, enhances patient safety and comfort, and facilitates the placement of the stretcher on the ambulance.
Smart Images
Figure CN121242847A_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The present application relates to the technical field of first-aid auxiliary tools, and particularly relates to a foldable first-aid stretcher. BACKGROUND
[0002] The medical stretcher is widely used as a common first-aid auxiliary tool, and the unfolded length of the medical stretcher is 180-200 cm, and the width is 50-60 cm. Since some residential areas are not provided with elevators, when first aid is performed, medical staff need to use the stretcher to lift the patient down the stairs and then transfer the patient to an ambulance. Since the length of the ordinary medical stretcher is relatively long, the stretcher is difficult to turn in a narrow area such as a residential corridor. At present, there are mainly two methods to solve the above problem. One is to directly carry the patient down the stairs by the medical staff and then transfer the patient to the ambulance by using the medical stretcher. The other is to directly use a soft stretcher to transfer the patient. The main body of the soft stretcher is a square stretcher cloth, and a handle is usually arranged around the stretcher cloth. The medical staff lifts the patient by using the handle to transfer the patient. Since the weight of an ordinary adult is usually about 50-75 kg, directly carrying the patient is not only labor-intensive, but also has a safety risk in the process of going down the stairs. Since the soft stretcher lacks rigid support, the transfer mode of the soft stretcher is not suitable for patients such as those with fractures and those with difficulty in breathing, and the patients are easily subjected to secondary injury. SUMMARY
[0003] To solve or partially solve the problems in the related art, the present application provides a foldable first-aid stretcher. The device can be folded according to the use requirement, the overall length of the stretcher is reduced, and the passability in a narrow area is improved. The support assembly can be used to assist in supporting the patient, and the labor intensity of the medical staff is reduced. The connecting assembly can be used to quickly disassemble and assemble the support assembly, and the stretcher can be conveniently placed on the ambulance.
[0004] The present application provides a foldable first-aid stretcher. The device can be folded according to the use requirement, the overall length of the stretcher is reduced, and the passability in a narrow area is improved. The support assembly can be used to assist in supporting the patient, and the labor intensity of the medical staff is reduced. The connecting assembly can be used to quickly disassemble and assemble the support assembly, and the stretcher can be conveniently placed on the ambulance. The base frame is further provided with a reinforcing rod corresponding to the hinge rod. The reinforcing sleeve is connected to the hinge rod on one side and connected to the reinforcing rod on the other side when the first plate and the second plate are in the same plane, so that the hinge rod is fixed. The base frame is further provided with a reinforcing rod corresponding to the hinge rod. The reinforcing sleeve is connected to the hinge rod on one side and connected to the reinforcing rod on the other side when the first plate and the second plate are in the same plane, so that the hinge rod is fixed.
[0005] Optionally, in some embodiments, the hinge rod is detachably mounted at the hinge of the first plate and the second plate, and the two ends of the hinge rod are provided with external threads, and the hinge rod is connected with the reinforcing sleeve through threads.
[0006] Optionally, in some embodiments, the telescopic frame is provided with first adjusting holes at intervals, and a first screw rod is threadedly connected to the base frame, and the length of the telescopic frame can be controlled by connecting the first screw rod to different first adjusting holes, so as to change the inclination angle of the arch structure.
[0007] Optionally, in some embodiments, the telescopic frame is provided with a support block at the end, and a roller is rotatably mounted at the bottom of the support block, and a first handle is provided on the side of the support block.
[0008] Optionally, in some embodiments, one end of the base frame is slidably connected with a telescopic frame, and the other end is provided with a hinge disc, and the hinge disc is provided with a positioning hole, and the end of the folding frame is provided with an adjusting disc, and the adjusting disc is provided with a plurality of second adjusting holes, and the hinge disc and the adjusting disc are hingedly connected, so that after different second adjusting holes are aligned with the positioning hole, the second screw rod can be used for fixing, so as to adjust the included angle between the base frame and the folding frame.
[0009] Optionally, in some embodiments, the folding frame is provided with a support frame at the bottom, and a second handle is provided at the end of the folding frame.
[0010] Optionally, in some embodiments, the support assembly comprises a connecting block, a support rod and a track wheel set, the base frame is provided with a connecting head at the bottom, one end of the support rod is fixedly connected with the connecting block, and the connecting block is mounted at the connecting head through a connecting assembly; the other end of the support rod is hingedly connected with the track wheel set.
[0011] Optionally, in some embodiments, the track wheel set is provided with a hinge block, the hinge block is hingedly connected with the support rod through a second hinge shaft, a limiting hole is formed on the support rod, and a through hole is formed on the hinge block, when the track wheel set is perpendicular to the support rod, the limiting hole is aligned with the through hole, and the position of the track wheel set can be fixed by inserting a limiting pin.
[0012] Optionally, in some embodiments, the connecting head is symmetrically provided with connecting holes, and the connecting block is provided with dismounting holes corresponding to the connecting holes, and the connecting block can be fixed by inserting a U-shaped pin when the dismounting holes are aligned with the connecting holes.
[0013] Optionally, in some embodiments, the U-shaped pin is provided with a clamping groove, the connecting block is slidably connected with a clamping block, one end of a spring is fixedly connected to the connecting block, and the other end is fixedly connected to the clamping block, when the U-shaped pin is completely inserted, the clamping block is clamped in the clamping groove under the action of the elastic force, so as to fix the position of the U-shaped pin.
[0014] The technical scheme provided by the application can have the following beneficial effects: The application can be folded according to the use requirement, the overall length of the stretcher is reduced, the passability in a narrow area is improved, the overall volume can be reduced by folding, and the carrying is facilitated; the patient can be assisted and supported by the supporting assembly, the labor intensity of the medical staff is reduced, and the safety of the downstairs process is improved; the supporting assembly can be quickly disassembled and assembled by the connecting assembly, and the stretcher can be placed on an ambulance conveniently.
[0015] It should be understood that the foregoing general description and the following detailed description are only exemplary and explanatory, and cannot limit the application. BRIEF DESCRIPTION OF DRAWINGS
[0016] The above and other objects, features and advantages of the present application will become more apparent from the following detailed description when taken in conjunction with the accompanying drawings in which like reference characters refer to like parts throughout the several views, and in which:
[0017] Figure 1 is a schematic view of the overall structure of the application; Figure 2 is a schematic view of the local structure of the application; Figure 3 is a schematic view of the local structure of the application Figure 2 is a schematic view of the structure of area A in the application; Figure 4 is another schematic view of the structure of area A in the application; Figure 2 Figure 5 is a schematic view of the structure of area B in the application; Figure 2 Figure 6 is a schematic view of the structure of the application after folding; Figure 7 is a schematic view of the local structure of the application; Figure 8 is a schematic view of the local structure of the application; Figure 9 is a schematic view of the use state of the application; Figure 10 is a schematic view of another use state of the application.
[0018] Reference signs: 1-base frame, 11-first plate, 12-first screw, 13-first shaft, 14-connection head, 141-connection groove, 142-connection hole, 15-hinge rod, 16-strengthening rod, 17-strengthening sleeve, 18-hinge disc, 19-positioning hole; 2- telescopic frame, 21- second plate, 22- first adjusting hole, 23- support block, 231- roller, 24- first handle bar, 25- second shaft; 3- folding frame, 31- third plate, 32- second handle bar, 33- third shaft, 34- support frame, 35- adjusting disc, 36- second adjusting hole, 37- folding hole, 38- second screw, 39- first hinged shaft; 4- support assembly, 41- connecting block, 411- disassembling hole, 412- slide rail, 413- mounting plate, 42- support rod, 421- limiting hole, 43- second hinged shaft, 44- hinged block, 45- track wheel set, 46- limiting pin; 5- connecting assembly, 51- U-shaped bolt, 511- clamping groove, 52- clamping block, 53- handle, 54- telescopic guide rod, 55- spring; 6- safety belt, 7- binding belt. DETAILED DESCRIPTION
[0019] Embodiments of the present application will be described in more detail with reference to the drawings. Although the embodiments of the present application are shown in the drawings, it should be understood that the present application can be implemented in various forms and should not be limited by the embodiments set forth herein. Rather, these embodiments are provided so that the present application will be thorough and complete, and will fully convey the scope of the present application to those skilled in the art.
[0020] It should be understood that although the terms "first", "second", "third", etc. are used to describe various information in the present application, these information should not be limited to these terms. These terms are only used to distinguish the same type of information from each other. For example, the first information can also be referred to as the second information, and similarly, the second information can also be referred to as the first information without departing from the scope of the present application. Therefore, the features defined as "first", "second" can explicitly or implicitly include one or more of the features. In the description of the present application, the meaning of "a plurality of" is two or more, unless otherwise specifically limited.
[0021] In the description of the present application, it should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application.
[0022] Unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. It will be apparent to those skilled in the art that various modifications and variations can be made to the present application without departing from the spirit or scope of the application. Thus, it is intended that the present application cover modifications and variations of this application provided they come within the scope of the appended claims and their equivalents.
[0023] Referring to Figure 1 , Figure 2 , a foldable emergency stretcher, comprising: a base frame 1, an extension frame 2, a folding frame 3, the extension frame 2 is slidably connected to one end of the base frame 1, and the folding frame 3 is hingedly connected to the other end of the base frame 1, a first plate 11 is hingedly connected to a first shaft 13 of the base frame 1, a second plate 21 is hingedly connected to a second shaft 25 of the extension frame 2, and the first plate 11 and the second plate 21 are hingedly connected through a hinge rod 15. When the extension frame 2 is fully extended, the first plate 11 and the second plate 21 are in the same plane to facilitate the patient lying flat, and the first plate 11 and the second plate 21 form an arched structure by folding the extension frame 2, thereby reducing the overall length of the stretcher. Further referring to Figure 2 , two third shafts 33 are arranged in parallel on the folding frame 3, and a third plate 31 is fixedly connected between the two third shafts 33, so that the third plate 31 rotates with the folding frame 3, and the overall length of the stretcher is further reduced by changing the included angle between the folding frame 3 and the base frame 1, thereby improving the passability of the stretcher in narrow areas.
[0024] The first plate 11 is used to support the patient's hips and thighs, the second plate 21 is used to support the patient's lower legs and feet, and the third plate 31 is used to support the patient's upper body and head. The first plate 11, the second plate 21 and the third plate 31 are all hard plates, so as to facilitate rigid support of the patient, and the contact surfaces of the plates with the patient are all arc surfaces, 1-2 cm soft rubber pads can be arranged on the arc surfaces to improve the comfort of the patient, and safety belts 6 are arranged on the plates to facilitate fixation of the patient, thereby ensuring the safety of the transfer process.
[0025] Referring to Figure 9When in use, the first plate 11 and the second plate 21 form an arch structure by folding the telescopic frame 2, and the inclination angle of the arch structure can be changed by changing the folding degree of the telescopic frame 2, and the inclination angle of the third plate 31 is adjusted by rotating the folding frame 3, so that the first plate 11, the second plate 21 and the third plate form a seat-like structure, which not only shortens the overall length of the stretcher and improves the passability in narrow areas such as stairways, but also ensures the stability of the patient's posture during the process of going downstairs, avoiding the patient's slipping under the influence of gravity. There are two points that need to be particularly mentioned, one is to try to make the angle between the first plate 11 and the base frame 1 equal to the inclination angle of the stairs when adjusting, so that the first plate 11 is in a horizontal state when going downstairs; the second is to ensure that the angle between the first plate 11 and the third plate 31 is always greater than 90° when adjusting, so as to ensure the comfort of the patient.
[0026] Referring to Figure 3 、 Figure 4 Since the arch structure has strong compression resistance, when the first plate 11 and the second plate 21 form an arch structure, there is no need to worry about its stability, however, when the first plate 11 and the second plate 21 are coplanar to form a plane structure, since the connection is hinged, its compression resistance is weak, in order to improve the stability of the connection between the first plate 11 and the second plate 21, a reinforcing rod 16 corresponding to the hinge rod 15 is also arranged on the base frame 1, the reinforcing rod 16 is threadedly connected with a reinforcing sleeve 17, and both ends of the hinge rod 15 are processed with external threads, when the first plate 11 and the second plate 21 are in the same plane, the axis of the hinge rod 15 coincides with the axis of the reinforcing rod 16, at this time, the reinforcing sleeve 17 is rotated to threadedly connect the hinge rod 15 on one side and the reinforcing rod 16 on the other side, so as to fix the hinge rod 15 and provide support for the connection between the first plate 11 and the second plate 21.
[0027] A support assembly 4 for auxiliary support is also installed at the bottom of the base frame 1, which can provide additional support during the transfer of the patient and reduce the labor intensity of the medical staff; the support assembly 4 can be quickly disassembled through the connecting assembly 5, which facilitates the transfer of the stretcher to the ambulance.
[0028] In some embodiments, referring to Figure 2For the convenience of adjusting the inclination angle of the arch structure formed by the first plate 11 and the second plate 21, first adjusting holes 22 are arranged at intervals on the telescopic frame 2, and a first screw rod 12 is threadedly connected to the end of the base frame 1. By inserting the first screw rod 12 into different first adjusting holes 22, the extension amount of the telescopic frame 2 can be controlled, so as to change the inclination angle of the arch structure. It should be noted that the first adjusting holes 22 are not arranged at equal intervals, and the arrangement positions of the first adjusting holes 22 are determined according to the included angle between the first plate 11 and the base frame 1. For example, in the embodiment, three first adjusting holes 22 are arranged, and the corresponding included angles are 15°, 30° and 40°, respectively. The specific number and arrangement positions of the first adjusting holes 22 can also be adjusted according to requirements. Generally, the degree of the included angle should not be greater than 45°. The reason is that when the included angle is equal to 45°, the first plate 11 and the second plate 21 form a right angle, and this position corresponds to the knee of the patient. When this position becomes an acute angle, the knee of the patient will be excessively bent, affecting the comfort.
[0029] In some embodiments, referring to Figure 5 For the convenience of adjusting the included angle between the first plate 11 and the third plate 31, one end of the base frame 1 is slidably connected to the telescopic frame 2, and the other end is provided with a hinged disc 18. The hinged disc 18 is provided with a positioning hole 19, the end of the folding frame 3 is provided with an adjusting disc 35, the hinged disc 18 and the adjusting disc 35 are connected through a first hinge shaft 39, and a plurality of second adjusting holes 36 corresponding to the positioning holes 19 are arranged on the adjusting disc 35 in the circumferential direction. Each second adjusting hole 36 is provided with an internal thread. After different second adjusting holes 36 are aligned with the positioning holes 19, a second screw rod 38 can be inserted to fix, so as to adjust the included angle between the base frame 1 and the folding frame 3. It should be noted that the determination method of the positions of the second adjusting holes 36 is the same as that of the first adjusting holes 22, that is, the included angle between the base frame 1 and the folding frame 3 is determined. For example, in the embodiment, three second adjusting holes 36 are arranged, and the corresponding included angles are 180°, 150° and 120°, respectively. The specific number and arrangement positions of the second adjusting holes 36 can also be adjusted according to requirements. Generally, the degree of the included angle should not be less than 90°. The reason is that when the included angle is equal to 90°, the first plate 11 and the third plate 31 form a right angle, and this position corresponds to the waist position of the patient. When this position becomes an acute angle, the waist of the patient will be excessively bent, affecting the comfort.
[0030] In some embodiments, referring to Figure 2Supporting blocks 23 are arranged at the ends of the telescopic frame 2, and rollers 231 are rotatably arranged at the bottom of the supporting blocks 23. Correspondingly, supporting frames 34 are fixedly arranged at the bottom of the folding frame 3. When the stretcher trolley is completely unfolded to form a plane, the lowest point of the rollers 231 is at the same horizontal plane as the lowest position of the supporting frames 34, so that the first plate 11, the second plate 21 and the third plate 31 are at the same height, facilitating the patient to lie flat. Further, the first gripping rod 24 is fixedly arranged between the two supporting blocks 23, and the second gripping rod 32 is arranged at the end of the folding frame 3, so as to facilitate medical staff to lift the stretcher trolley. When in use, two medical staff members lift the first gripping rod 24 and the second gripping rod 32 respectively, and one side of the first gripping rod 24 is located at the front end of the movement, and one side of the second gripping rod 32 is located at the rear end of the movement, so as to transfer the patient; when entering the ambulance, the medical staff member at the front end places the roller 231 on the edge of the ambulance compartment and then steps aside, and the medical staff member at the rear end pushes the stretcher trolley, so that the stretcher trolley as a whole enters the compartment and the second gripping rod 32 is lowered, and the supporting frame 34 touches the ground, and the stretcher trolley is fixed under the action of friction, and the patient transfer is completed. Further, referring to Figure 9 , the supporting frame 34 has a mountain-shaped structure, and a plurality of reinforcing rods are arranged in the supporting frame 34. In addition to enhancing the stability of the supporting frame 34, when the folding frame 3 is adjusted to be inclined, the position of the second gripping rod 32 is too high, which is not convenient for medical staff to exert force. At this time, the medical staff member at one side of the second gripping rod 32 can exert force by gripping the supporting frame 34, which is convenient for exerting force to lift the stretcher trolley.
[0031] In some embodiments, referring to Figure 7 , in order to reduce the labor intensity of medical staff in transferring patients, a detachable supporting assembly 4 is arranged at the bottom of the base frame 1. The supporting assembly 4 includes a connecting block 41, a supporting rod 42 and a crawler wheel set 45. A connecting head 14 is arranged at the bottom of the base frame 1, and a connecting groove 141 is formed at the bottom of the connecting head 14. One end of the supporting rod 42 is fixedly connected with the connecting block 41, the connecting block 41 is clamped in the connecting groove 141, and the supporting rod 42 is detachably arranged at the connecting head 14 through the connecting assembly 5. The other end of the supporting rod 42 is hingedly connected with the crawler wheel set 45. Specifically, a hinged block 44 is arranged on the crawler wheel set 45, the hinged block 44 is hingedly connected with the supporting rod 42 through a second hinge shaft 43, a limiting hole 421 is formed on the supporting rod 42, and a through hole is formed on the hinged block 44. When the crawler wheel set 45 is perpendicular to the supporting rod 42, the limiting hole 421 is aligned with the through hole. At this time, the position of the crawler wheel set 45 can be fixed by inserting a limiting pin 46, so as to prevent the crawler wheel set 45 from rotating around the hinge point. Figure 9 , Figure 10, so as to meet the needs of different patients transfer, for ordinary patients, in the process of going downstairs, in order to improve the stretcher through, will be folded to adjust the stretcher, shorten its overall length, after adjustment, the position of the first plate 11 will be relative to the horizontal, at this time, through the limiting pin 46 to fix the track wheel group 45, as long as the track wheel group 45 is always in contact with the stairs, it can guarantee the horizontal of the first plate 11, avoid the first plate 11 constantly pitch due to the imbalance of the force of the medical staff in front and back, ensure the comfort of patients. In some special cases, the patient must be transferred lying down, at this time, the stretcher can not be folded to adjust, in order to ensure that the track wheel group 45 can always be in contact with the stairs, provide auxiliary support, at this time, the limiting pin 46 needs to be removed, improve the flexibility of the track wheel group 45, so that the track wheel group 45 can rotate around the hinge, thus automatically adapt to the angle of the stairs. It should be noted that the track wheel group 45 only provides auxiliary support, which can be used without power, the movement of the stretcher still depends on the control of the medical staff, and the structure of the track wheel group 45 is prior art, which will not be described here.
[0032] In some embodiments, referring to Figure 8 After the installation of the support assembly 4, it is difficult for the stretcher to enter the ambulance box, in order to realize the quick disassembly and assembly of the support assembly 4, two connecting holes 142 are symmetrically opened on the connecting head 14, and disassembly holes 411 corresponding to the connecting holes 142 are opened on the connecting block 41, when the disassembly holes 411 are aligned with the connecting holes 142, the connecting block 51 can be fixed by inserting the U-shaped bolt 51, when the support assembly 4 needs to be removed, the U-shaped bolt 51 only needs to be pulled out, which is convenient and fast.
[0033] However, if the U-shaped latch 51 is not stable, it can cause the support assembly 4 to suddenly fail during travel, causing secondary injury to the patient. Therefore, to ensure the stability of the U-shaped latch 51, a clamping groove 511 is formed on the U-shaped latch 51, and a sliding rail 412 is arranged on the connecting block 41. A clamping block 52 is slidably connected in the sliding rail 412. When the U-shaped latch 51 is fully inserted, the clamping groove 511 will appear in the movement path of the clamping block 52. At this time, the clamping block 52 is slid to be clamped in the clamping groove 511, thereby fixing the U-shaped latch 51. Further, to make the clamping block 52 always clamped in the clamping groove 511, a mounting plate 413 is arranged on the connecting block 41. One end of the telescopic guide rod 54 is fixedly connected to the mounting plate 413, and the other end is fixedly connected to the clamping block 52. A spring 55 is sleeved outside the telescopic guide rod 54, one end of the spring 55 is fixedly connected to the mounting plate 413, and the other end is fixedly connected to the clamping block 52. In use, the clamping block 52 is pressed downward to slide downward, and at this time the spring 55 is in a stretched state. After the disassembly hole 411 is exposed, the connecting block 41 is clamped in the connecting groove 141, the disassembly hole 411 is aligned with the connecting hole 142, the U-shaped latch 51 is fully inserted, and the clamping block 52 is released. The clamping block 52 moves upward under the action of the elastic force and is clamped in the clamping groove 511, thereby fixing the position of the U-shaped latch 51. Further, to facilitate pressing the clamping block 52, a handle 53 is further arranged on the clamping block 52 in the transverse direction. When the support assembly 4 needs to be disassembled, the clamping block 52 is pressed downward by the handle 53, so that the clamping block 52 is separated from the clamping groove 511. After the U-shaped latch 51 is pulled out, the base frame 1 and the support assembly 4 can be separated, and the stretcher trolley can be conveniently transferred to the ambulance compartment.
[0034] In some embodiments, referring to Figure 6 , when carrying, the hinged rod 15 is first pulled out from between the first plate 11 and the second plate 21 to separate the first plate 11 and the second plate 21; then the telescopic rod 2 is completely folded into the base frame 1, so that the supporting block 23 contacts the base frame 1, and the telescopic frame 2 is fixed by the first screw rod 12; next, the folding frame 3 is folded, so that it overlaps the base frame 1, at this time the first handle 24 and the second handle 32 are parallel, and finally the base frame 1 and the folding frame 3 are tied together by the binding belt 7, and the first handle 24 and the second handle 32 are lifted by the medical staff to carry. The support assembly 4 is carried separately according to the needs.
[0035] Finally, it should be noted that, in this document, relational terms such as first and second, and the like can be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Ranges can be expressed herein with "from" and "to" statements of the form "from about a to about b", and include the end points of the ranges. Moreover, the terms including, including but not limited to or any other variation thereof are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements is not necessarily limited to those elements, but can include other elements not expressly listed or inherent to such process, method, article, or apparatus.
[0036] The foregoing description of various embodiments of the present application has been presented for the purposes of illustration and description. It is not intended to be exhaustive or to limit the application to the precise form disclosed. Many modifications and variations are possible in light of the above teaching. It was described above, and then described in the description prior to the claims, that the term "comprising", including its variants, such as "comprise", "comprises" or "comprised of", is intended to cover a non-exclusive inclusion. Thus, a process, method, article, or apparatus that comprises a list of elements is not necessarily limited to those elements, but can include other elements not expressly listed or inherent to such process, method, article, or apparatus. The term "consisting of" is intended to cover only those elements listed. The term "consisting essentially of" is intended to cover only those elements as modified by "essentially", in that additional elements will not change the basic and novel characteristics of the described embodiments. The foregoing description, for the purposes of explanation, has been presented consistent with the attachment of forms to embodiments that are possible. There can be many alternate arrangements and methodologies employed in carrying out various embodiments.
Claims
1. A foldable emergency stretcher cart, characterized in that: include The base frame (1), the telescopic frame (2) which is slidably connected to the base frame (1), and the folding frame (3) which is angularly connected to the base frame (1). A first plate (11) is hinged on the base frame (1), and a second plate (21) is hinged on the telescopic frame (2). The first plate (11) and the second plate (21) are hinged together by a hinge rod (15). When the telescopic frame (2) is fully extended, the first plate (11) and the second plate (21) are on the same plane. By retracting the telescopic frame (2), an arch structure can be formed between the first plate (11) and the second plate (21). A third plate (31) is fixedly connected to the folding frame (3). The base frame (1) is also provided with a reinforcing rod (16) corresponding to the hinge rod (15). A reinforcing sleeve (17) is provided on the reinforcing rod (16). When the first plate (11) and the second plate (21) are on the same plane, the reinforcing sleeve (17) can be connected to the hinge rod (15) on one side and the reinforcing rod (16) on the other side, thereby fixing the hinge rod (15). The base frame (1) is also equipped with a support component (4) for auxiliary support. The support component (4) can be quickly disassembled and assembled by connecting component (5).
2. The foldable emergency stretcher cart according to claim 1, characterized in that: The hinge rod (15) is detachably installed at the hinge of the first plate (11) and the second plate (21), and both ends of the hinge rod (15) are provided with external threads. The hinge rod (15) and the reinforcing sleeve (17) can be connected by threads.
3. The foldable emergency stretcher cart according to claim 1, characterized in that: The telescopic frame (2) is provided with first adjustment holes (22) at intervals, and the base frame (1) is connected to a first screw (12) by thread. By connecting the first screw (12) to different first adjustment holes (22), the elongation of the telescopic frame (2) can be controlled, thereby changing the inclination angle of the arch structure.
4. The foldable emergency stretcher cart according to claim 3, characterized in that: The telescopic frame (2) is fixedly connected to a support block (23) at its end. A roller (231) is rotatably installed at the bottom of the support block (23), and a first grip bar (24) is provided on the side of the support block (23).
5. The foldable emergency stretcher cart according to claim 1, characterized in that: One end of the base frame (1) is slidably connected to the telescopic frame (2), and the other end is provided with a hinge plate (18). The hinge plate (18) has a positioning hole (19). The end of the folding frame (3) is provided with an adjustment plate (35). The adjustment plate (35) has several second adjustment holes (36). The hinge plate (18) is hinged to the adjustment plate (35). After different second adjustment holes (36) are aligned with the positioning hole (19), they can be fixed by the second screw (38) to adjust the angle between the base frame (1) and the folding frame (3).
6. The foldable emergency stretcher cart according to claim 5, characterized in that: The bottom of the folding frame (3) is fixedly connected to a support frame (34), and a second handle (32) is provided at the end of the folding frame (3).
7. The foldable emergency stretcher cart according to claim 1, characterized in that: The support assembly (4) includes a connecting block (41), a support rod (42), and a track wheel assembly (45). The base frame (1) has a connector (14) at its bottom. One end of the support rod (42) is fixedly connected to the connecting block (41), and the connecting block (41) is installed at the connector (14) through the connecting assembly (5). The other end of the support rod (42) is hinged to the track wheel assembly (45).
8. The foldable emergency stretcher cart according to claim 7, characterized in that: The track wheel assembly (45) is provided with a hinge block (44), which is hinged to the support rod (42) through the second hinge shaft (43). A limit hole (421) is opened on the support rod (42), and a through hole is opened on the hinge block (44). When the track wheel assembly (45) is perpendicular to the support rod (42), the limit hole (421) is aligned with the through hole. The position of the track wheel assembly (45) can be fixed by inserting a limit pin (46).
9. The foldable emergency stretcher cart according to claim 7, characterized in that: The connector (14) has symmetrically opened connecting holes (142), and the connecting block (41) has corresponding disassembly holes (411) for the connecting holes (142). When the disassembly holes (411) are aligned with the connecting holes (142), the connecting block (41) can be fixed by inserting a U-shaped pin (51).
10. The foldable emergency stretcher cart according to claim 9, characterized in that: The U-shaped pin has a slot, and a locking block (52) is slidably connected to the connecting block (41). One end of the spring (55) is fixed to the connecting block (41), and the other end is fixed to the locking block (52). When the U-shaped pin (51) is fully inserted, the locking block (52) is locked in the slot (511) under the action of elastic force, thereby fixing the position of the U-shaped pin (51).