A folding stretcher platform

Abstract

The application provides a folding stretcher platform, which comprises a turnover assembly, a hydraulic push rod and a supporting seat; a first telescopic assembly, which comprises a first support, a driving oil cylinder and a push rod, and a first linkage plate is arranged below the first support; a second telescopic assembly, which comprises a second support and a belt pulley mechanism, and the first linkage plate is arranged below the belt pulley mechanism; and a third telescopic assembly, which comprises a third support, a screw rod and a driving motor, a stretcher locking assembly is threadedly connected to the screw rod, a second linkage plate is fixedly arranged at the bottom of the third support, and the second linkage plate is fixedly arranged above the belt pulley mechanism. The application does not require a staff to lift the stretcher, the stretcher carrying process is stable, and secondary injury to the patient is avoided.

Description

Technical Field

[0001] This invention belongs to the technical field of stretcher platforms, and specifically relates to a folding stretcher platform. Background Technology

[0002] In existing technologies, most ambulance stretcher platforms are accessed by manually pushing the stretcher into the platform. However, for vehicles with high chassis, the stretcher cannot be loaded onto the vehicle normally. This requires staff to lift the stretcher and get it into the vehicle, which consumes a lot of manpower. In addition, manually lifting the stretcher can easily cause it to become unstable, which could cause secondary injury to the patient. Summary of the Invention

[0003] To address the aforementioned technical problems, this invention provides a folding stretcher platform to solve the issues raised in the background section.

[0004] This invention provides the following technical solution: a folding stretcher platform, comprising:

[0005] A flipping assembly includes a base, a hydraulic push rod hinged to the base, and a support seat on the base. A movable support rod is hinged to the support seat, and one end of the movable support rod is hinged to the movable support frame.

[0006] A primary telescopic assembly is rotatably mounted on the flipping assembly. The primary telescopic assembly includes a first bracket, a drive cylinder fixedly mounted inside the first bracket, and a push rod located at the output end of the drive cylinder. A first linkage plate is fixedly mounted below the first bracket. One side of the first bracket is hinged to one side of the base, and the first bracket is hinged to the movable support frame.

[0007] A secondary telescopic assembly is slidably mounted on the primary telescopic assembly. The secondary telescopic assembly includes a second bracket and a pulley mechanism mounted on the second bracket. The end of the push rod away from the drive cylinder is mounted on the second bracket. The first linkage plate is fixedly mounted below the pulley mechanism.

[0008] A three-stage telescopic assembly is slidably mounted on the two-stage telescopic assembly. The three-stage telescopic assembly includes a third bracket, a lead screw rotatably mounted on the third bracket, and a drive motor mounted on one side of the third bracket. The drive motor is connected to the lead screw, and a stretcher locking assembly is threaded onto the lead screw. The stretcher locking assembly is slidably mounted on the third bracket. The third bracket has slide rails on both sides for the stretcher locking assembly to slide. A second linkage plate is fixedly mounted at the bottom of the third bracket, and the second linkage plate is fixedly mounted above the pulley mechanism.

[0009] Compared with the prior art, the beneficial effects of this application are as follows: When it is necessary to move the stretcher into the vehicle, the first support is rotated at a preset angle by the hydraulic push rod, and then the second support is moved a preset distance on the first support by the drive cylinder. During the movement of the second support, the third support moves synchronously on the second support through the transmission action of the pulley mechanism until the second and third supports are fully extended. Then, the lead screw is rotated by the drive motor, which moves the stretcher locking component to the leftmost end of the third support. The stretcher is fixed by the stretcher locking component, and the drive motor pulls the stretcher so that it is completely on the first support. Then, the drive cylinder and hydraulic push rod are controlled to reset, thereby realizing the stretcher transportation process. This replaces the traditional method of manually transporting stretchers, eliminates the need for staff to lift the stretcher, and ensures stable stretcher transportation, avoiding secondary injury to the patient.

[0010] Preferably, the movable support frame has an inverted U-shaped structure, one end of the movable support rod is hinged to the inner side of the movable support frame, movable connecting seats are symmetrically fixed on the inner side of the first bracket, the top of the movable support frame is rotatably disposed between the two movable connecting seats, a spherical bearing with a vertical seat is fixed on one side of the base, a movable shaft is rotatably disposed below the first linkage plate, and the spherical bearing with a vertical seat is disposed on the movable shaft.

[0011] Preferably, a connecting beam is fixedly provided on the second bracket, a push seat is fixedly provided below the connecting beam, the end of the push rod away from the driving cylinder is fixedly connected to the push seat, and several support plates are fixed between the connecting beam and the second bracket.

[0012] Preferably, the second bracket is symmetrically provided with a first auxiliary wheel on the outer side near one end of the third bracket, the first auxiliary wheel is slidably provided on the inner side of the third bracket, and the inner side of the third bracket is provided with a first groove for the sliding of the first auxiliary wheel.

[0013] Preferably, the second bracket is symmetrically rotatably provided with a second auxiliary wheel on the inner side of one end near the first bracket, the second auxiliary wheel is slidably provided on the outer side of the first bracket, and the outer side of the first bracket is provided with a second sliding groove for the sliding of the second auxiliary wheel.

[0014] Preferably, the third bracket is symmetrically rotatably provided with a third auxiliary wheel on the inner side of one end near the second bracket, the third auxiliary wheel is slidably provided on the outer side of the second bracket, and the outer side of the second bracket is provided with a third sliding groove for the sliding of the third auxiliary wheel.

[0015] Preferably, a limiting plate is fixedly provided on the third bracket. The limiting plate is T-shaped. A stretcher clamp is symmetrically fixed at one end of the limiting plate. A protective cover is fixed on one side of the third bracket. The drive motor is located inside the protective cover. A coupling is provided at the output end of the drive motor. One end of the lead screw is connected to the coupling.

[0016] Preferably, the stretcher locking assembly includes a housing, a first pawl rotatably disposed within the housing via a first rotating shaft, a second pawl rotatably disposed within the housing via a second rotating shaft, an unlocking controller disposed within the housing, and a return spring disposed between the second pawl and the second rotating shaft. The housing is provided with a groove with an open end, the opening direction of which is opposite to the first pawl and the second pawl.

[0017] Preferably, the first claw has a first groove on the side near the second claw, the second claw has a second groove on the side near the first claw, the top of the second claw is located in the first groove, the first rotating shaft is located on the side of the first claw away from the groove, the second rotating shaft is located on the side of the second claw away from the groove, the side of the first claw away from the groove extends outward until it penetrates the outer shell, and the outer shell has a movable through hole for the first claw to rotate.

[0018] Preferably, a fan-shaped telescopic baffle is provided between the base and the first bracket. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 A perspective view of the folding stretcher platform provided in an embodiment of the present invention;

[0021] Figure 2 A perspective view of the primary telescopic component, the secondary telescopic component, and the tertiary telescopic component provided in an embodiment of the present invention;

[0022] Figure 3 A perspective view of the primary telescopic component, the secondary telescopic component, and the tertiary telescopic component from another viewpoint provided in an embodiment of the present invention;

[0023] Figure 4 A perspective view of the flipping component provided in an embodiment of the present invention;

[0024] Figure 5 A perspective view of a primary telescopic component provided in an embodiment of the present invention;

[0025] Figure 6 A perspective view of the primary telescopic component from another angle, provided for an embodiment of the present invention;

[0026] Figure 7 A perspective view of the two-stage telescopic component provided in an embodiment of the present invention;

[0027] Figure 8 A perspective view of the secondary telescopic component from another angle, provided for an embodiment of the present invention;

[0028] Figure 9 A perspective view of a three-stage telescopic assembly provided in an embodiment of the present invention;

[0029] Figure 10 This is an internal structural diagram of a three-stage telescopic assembly provided in an embodiment of the present invention;

[0030] Figure 11 A perspective view of the three-stage telescopic assembly from another angle, provided for an embodiment of the present invention;

[0031] Figure 12 A perspective view of the stretcher locking assembly provided in an embodiment of the present invention;

[0032] Figure 13 for Figure 12 Enlarged view of the structure at point A in the image;

[0033] Figure 14 This is a perspective view of the folding stretcher platform in its retracted state, as provided in an embodiment of the present invention.

[0034] Explanation of reference numerals in the attached figures:

[0035]

[0036] The present invention will be further described below with reference to the accompanying drawings and description. Detailed Implementation

[0037] Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain embodiments of the present invention, and should not be construed as limiting the present invention.

[0038] In the description of the embodiments of the present invention, it should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the embodiments of the present invention 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. Therefore, they should not be construed as limitations on the present invention.

[0039] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of embodiments of the present invention, "a plurality of" means two or more, unless otherwise explicitly specified.

[0040] In the embodiments of the present invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of the present invention according to the specific circumstances.

[0041] In one embodiment of the present invention, such as Figure 1 , Figure 2 , Figure 3 As shown, a folding stretcher platform includes a flipping assembly 1, a primary telescopic assembly 3, a secondary telescopic assembly 4, and a tertiary telescopic assembly 5;

[0042] Among them, the flipping component 1 is used to drive the first-level telescopic component 3, the second-level telescopic component 4 and the third-level telescopic component 5 to flip together at a certain angle. The first-level telescopic component 3 is used to drive the second-level telescopic component 4 and the third-level telescopic component 5 to extend and retract. The second-level telescopic component 4 is used to drive the third-level telescopic component 5 to extend and retract together.

[0043] like Figure 4 As shown, the flipping assembly 1 includes a base 11, a hydraulic push rod 13 hinged to the base 11, and a support seat 16 on the base 11. A movable support rod 15 is hinged to the support seat 16, and one end of the movable support rod 15 is hinged to the movable support frame 15.

[0044] Specifically, in the flipping assembly 1, one end of the hydraulic push rod 13 is hinged to the base 11, while the output end of the hydraulic push rod 13 is hinged to the movable support rod 15. The two ends of the movable support frame 15 are respectively hinged to the support base 16 and the movable support frame 14. Driven by the hydraulic push plate 13, the movable support rod 15 is rotated on the support base 16, thereby lifting the movable support frame 14. Finally, the lifting of the movable support rod 15 causes the first-stage telescopic assembly 3, the second-stage telescopic assembly 4, and the third-stage telescopic assembly 5 to flip along one side of the base 11 by a preset angle. In this embodiment, the flipping angle of the first-stage telescopic assembly 3, the second-stage telescopic assembly 4, and the third-stage telescopic assembly 5 is 17°. In actual use, the flipping angle can be changed according to the stretcher model and the distance between the vehicle and the ground. The change in the flipping angle can be achieved by changing the position of the movable support rod 15 on the movable support frame 14, the length of the movable support frame 14 and the movable support rod 15, and the thrust of the hydraulic push rod 14.

[0045] like Figure 5 , Figure 6 As shown, the first-stage telescopic component 3 is rotatably mounted on the flipping component 1. The first-stage telescopic component 3 includes a first bracket 31, a drive cylinder 32 fixedly mounted in the first bracket 31, and a push rod 33 mounted at the output end of the drive cylinder 32. A first linkage plate 35 is fixedly mounted below the first bracket 31. One side of the first bracket 31 is hinged to one side of the base 11. The first bracket 31 is hinged to the movable support frame 15.

[0046] Specifically, the first-level telescopic component 3 can be used to drive the second-level telescopic component 4 and the third-level telescopic component 5 to perform telescopic movements. Specifically, the drive cylinder 32, which is fixedly installed inside the first bracket 31, drives the push rod 33 to telescopically extend and retract, and the push rod 33 drives the second-level telescopic component 4 to perform telescopic movements. At the same time, the drive cylinder 32 is specifically installed on the side of the first bracket 31 away from the second-level telescopic component 4, so as to ensure that the maximum telescopic range can be achieved when the push rod 33 pushes the second-level telescopic component 4.

[0047] like Figure 7 , Figure 8 As shown, the secondary telescopic component 4 is slidably mounted on the primary telescopic component 3. The secondary telescopic component 4 includes a second bracket 41 and a pulley mechanism 42 mounted on the second bracket 41. The end of the push rod 33 away from the drive cylinder 32 is mounted on the second bracket 41. The first linkage plate 35 is fixedly mounted below the pulley mechanism 42.

[0048] Specifically, the second bracket 41 is slidably mounted on the first bracket 31, and the cross-section of the second bracket 41 is inverted U-shaped, so that the second bracket 41 slides on the periphery of the first bracket 31, so as to facilitate the sliding of the secondary telescopic component 4 and also to limit the position of the second bracket 41 mounted on the first bracket 31.

[0049] Meanwhile, the push rod 33 can be driven to move toward the secondary telescopic assembly 4 by the drive cylinder 32 in the primary telescopic assembly 3. Since one end of the push rod 33 is fixedly set with the second bracket 41 in the secondary telescopic assembly 4, the entire secondary telescopic assembly 4 can be driven away from the primary telescopic assembly 3 by the drive cylinder 32. The pulley mechanism 42 specifically includes two pulleys and a transmission belt connected between the two pulleys. The first linkage plate 35 in the primary telescopic assembly 3 is fixed on the transmission belt and is specifically fixed below the entire pulley mechanism 42.

[0050] like Figure 9 , Figure 10 , Figure 11 As shown, the three-stage telescopic assembly 5 is slidably mounted on the two-stage telescopic assembly 4. The three-stage telescopic assembly 5 includes a third bracket 51, a lead screw 58 rotatably mounted on the third bracket 51, and a drive motor 59 mounted on one side of the third bracket 51. The drive motor 59 is connected to the lead screw 58. A stretcher locking assembly 6 is threadedly connected to the lead screw 58. The stretcher locking assembly 6 is slidably mounted on the third bracket 51. The third bracket 51 has slide rails 52 on both sides for the stretcher locking assembly 6 to slide. A second linkage plate 57 is fixedly mounted at the bottom of the third bracket 51. The second linkage plate 57 is fixedly mounted above the pulley mechanism 42.

[0051] Specifically, after the entire stretcher platform rotates and rises, in order to further reduce the labor intensity of the staff, a stretcher locking assembly 6 is set on the third support 51. In actual use, the screw 58 driven by the drive motor 59 rotates, and the rotation of the screw 58 allows the entire stretcher locking assembly 6 to slide on the slide rail 52 and control it to slide to the leftmost end of the third support 51. Then, by inserting the stretcher wheels into the stretcher locking assembly 6 and fixing the stretcher with the stretcher locking assembly 6, and controlling the stretcher locking assembly 6 to reset, the stretcher can be lifted onto the third support 51. Then, by controlling the hydraulic push rod 13 and the drive cylinder 32 to reset, the stretcher can be transported.

[0052] It is worth noting that the first linkage plate 35 is fixedly disposed below the pulley mechanism 42, and the second linkage plate 57 is fixedly disposed above the pulley mechanism 42. From a planar perspective, in the initial position, the first linkage plate 35 is fixed to the lower left of the transmission belt in the pulley mechanism 42, while the second linkage plate 57 is fixed to the upper right of the transmission belt in the pulley mechanism 42. When the drive cylinder 32 is activated, it will drive the second bracket 41 to move to the left. Since the first bracket 31 is fixed, the corresponding first linkage plate 35 is also fixed, but the entire pulley mechanism 42 is moving to the left. Therefore, the transmission belt will move to the left of the second bracket 41. The second-stage telescopic component 4 moves between the two pulleys under the movement of the first-stage support 41. The lower transmission belt moves from left to right under the movement of the second support 41, while the upper transmission belt moves from right to left. Therefore, the transmission belt can drive the second linkage plate 57 to move to the left, thereby driving the third-stage telescopic component 5 to move to the left. Thus, by setting the pulley mechanism 42, the second-stage telescopic component 4 and the third-stage telescopic component 5 can move synchronously. That is, when the drive cylinder 32 drives the second-stage telescopic component 4 to move to the left, the third-stage telescopic component 5 will also move synchronously to the left under the transmission action of the pulley mechanism 42, thereby realizing the telescopic function of the stretcher platform.

[0053] In this embodiment, the movable support frame 14 has an inverted U-shaped structure. One end of the movable support rod 15 is hinged to the inner side of the movable support frame 14. The inner side of the first bracket 31 is symmetrically fixed with movable connecting seats 36. The top of the movable support frame 14 is rotatably disposed between the two movable connecting seats 36. A spherical bearing with a vertical seat 12 is fixedly disposed on one side of the base 11. A movable shaft 37 is rotatably disposed below the first linkage plate 35. The spherical bearing with a vertical seat 12 is disposed on the movable shaft 37.

[0054] Specifically, by setting an inverted U-shaped movable support frame 14, with one end of the movable support rod 15 hinged to the inner side of the movable support frame 14, greater support force can be provided to ensure the stability of the first-stage telescopic component 3, the second-stage telescopic component 4, and the third-stage telescopic component 5 during flipping. At the same time, the spherical bearing with vertical seat 12 set on the base 11 and the movable shaft 37 set below the first linkage plate 35 can serve as the flipping center, allowing the first-stage telescopic component 3, the second-stage telescopic component 4, and the third-stage telescopic component 5 to flip along the movable shaft 37 and the spherical bearing with vertical seat 12 at a preset angle during flipping. The movable shaft 37 and the spherical bearing with vertical seat 12 also play a stabilizing role. In this embodiment, the first linkage plate 35 is installed on the side of the first bracket 31 near the second bracket 41, and the corresponding movable shaft 37 and spherical bearing with vertical seat 12 are also respectively set at the side positions of the first bracket 31 and the base 11, ensuring that they are not interfered with by the base 11 during flipping.

[0055] In this embodiment, a connecting beam 34 is fixedly provided on the second bracket 41, and a push seat 46 is fixedly provided below the connecting beam 34. The end of the push rod 33 away from the driving cylinder 32 is fixedly connected to the push seat 46. A plurality of support plates 43 are fixed between the connecting beam 34 and the second bracket 41.

[0056] Specifically, the push rod 33 is extended and retracted by the driving cylinder 32, which in turn drives the push seat 46 connected to it to move. The movement of the push seat 46 drives the entire connecting beam 34 and the second bracket 41 to move, so as to complete the extension and retraction of the secondary telescopic assembly 4. At the same time, by setting the connecting beam 34 and the support plate 43, the structure of the entire secondary telescopic assembly 4 can be stabilized to ensure the stability during the extension and retraction process. Meanwhile, the length of the connecting beam 34 is equal to the length of the second bracket 41.

[0057] In this embodiment, the second bracket 41 is symmetrically rotatably provided with a first auxiliary wheel 44 on the outer side near one end of the third bracket 51. The first auxiliary wheel 44 is slidably disposed on the inner side of the third bracket 51. The inner side of the third bracket 51 is provided with a first sliding groove for the sliding of the first auxiliary wheel 44.

[0058] Specifically, the first auxiliary wheel 44 is disposed on the side of the second bracket 41 close to the third bracket 51, and the first auxiliary wheel 44 is symmetrically disposed on the outer side of the second bracket 41. Through the cooperation of the first auxiliary wheel 44 and the first sliding groove, it can play a limiting and guiding role on the one hand, and facilitate the sliding extension and retraction of the second bracket 41 on the third bracket 51 on the other hand.

[0059] Preferably, the second bracket 41 is symmetrically rotatably provided with a second auxiliary wheel 45 on the inner side of one end near the first bracket 31, the second auxiliary wheel 45 is slidably provided on the outer side of the first bracket 31, and the outer side of the first bracket 31 is provided with a second sliding groove for the second auxiliary wheel 45 to slide.

[0060] Specifically, the second auxiliary wheel 45 is disposed on the side of the second bracket 41 close to the first bracket 31, and the second auxiliary wheel 45 is symmetrically disposed on the inner side of the second bracket 41. Through the cooperation of the second auxiliary wheel 45 and the second sliding groove, it can play a limiting and guiding role on the one hand, and facilitate the sliding extension and retraction of the second bracket 41 on the first bracket 31 on the other hand.

[0061] Preferably, the third bracket 51 is symmetrically rotatably provided with a third auxiliary wheel 56 on the inner side of one end near the second bracket 41, the third auxiliary wheel 56 is slidably provided on the outer side of the second bracket 41, and the outer side of the second bracket 41 is provided with a third sliding groove for the sliding of the third auxiliary wheel 56.

[0062] Specifically, the third auxiliary wheel 56 is set on the side of the third bracket 51 close to the second bracket 41, and the third auxiliary wheel 56 is symmetrically arranged on the inner side of the third bracket 51. Through the cooperation of the third auxiliary wheel 56 and the third sliding groove, it can play a limiting and guiding role on the one hand, and facilitate the sliding extension and retraction of the third bracket 51 on the second bracket 41 on the other hand.

[0063] In this embodiment, a limiting plate 53 is fixedly provided on the third support 51. The limiting plate 53 is T-shaped. A stretcher block 54 is symmetrically fixed at one end of the limiting plate 53. A protective cover 55 is fixed on one side of the third support 51. The drive motor 59 is located inside the protective cover 55. A coupling 510 is provided at the output end of the drive motor 59. One end of the lead screw 58 is connected to the coupling 510.

[0064] Specifically, the limiting plate 53 has a T-shaped structure, which includes a first limiting part, a second limiting part, and a transition part between the first limiting part and the second limiting part. The width of the second limiting part is greater than the width of the first limiting part. When the stretcher moves to the third support 51, the first limiting part restricts the approximate position of the two rows of wheels of the stretcher, so that the two rows of wheels of the stretcher are respectively located on both sides of the first limiting part. Then, the inclined transition part allows the stretcher to gradually adjust its position when moving, so that the two rows of wheels are respectively located on both sides of the second limiting part. When the stretcher is in place, the stretcher is locked by the stretcher locking block 54, and the stretcher locking component 6 fixes the position of the stretcher.

[0065] Meanwhile, in this embodiment, the drive motor 59 is protected from being exposed by setting a protective cover 55. At the same time, a coupling 510 is set at the output end of the drive motor 59 to facilitate the rotation of the lead screw 58.

[0066] like Figure 12 , Figure 13 As shown, in this embodiment, the stretcher locking assembly includes a housing 61, a first claw 64 rotatably disposed within the housing 61 via a first rotating shaft 67, a second claw 65 rotatably disposed within the housing 61 via a second rotating shaft 610, an unlocking controller 68 disposed within the housing 61, and a return spring 66 disposed between the second claw 65 and the second rotating shaft 610. The housing 61 is provided with a groove 62 with one end open, and the opening direction of the groove 62 is opposite to that of the first claw 64 and the second claw 65.

[0067] In this embodiment, the first claw 64 is provided with a first slot on the side near the second claw 65, and the second claw 65 is provided with a second slot on the side near the first claw 64. The top of the second claw 65 is located in the first slot. The first rotating shaft 67 is located on the side of the first claw 64 away from the groove 62, and the second rotating shaft 610 is located on the side of the second claw 65 away from the groove 62. The side of the first claw 64 away from the groove 62 extends outward until it penetrates the outer shell 61. The outer shell 61 is provided with a movable through hole 69 for the first claw 64 to rotate.

[0068] Specifically, a groove 62 is provided on the outer shell 61, and the groove 62 is open at one end. The opening direction of the groove 62 is towards the direction in which the stretcher enters the third support 51. In the initial state, under the elastic force of the return spring 66, the second claw 65 is tilted towards the opening direction of the groove 62 so that the second claw is exposed. At the same time, the bottom of the second claw is lower than the bottom of the first claw 64. When the axle of the stretcher wheel enters the groove 62, the axle will enter the second claw accordingly. At this time, the stretcher continues to move into the groove 62, lifting the first claw 64 and causing the second claw 65 to enter the first claw. Under the gravity of the first claw 64, the second claw 65 locks the axle of the wheel in place inside the second claw, thereby fixing the stretcher.

[0069] It is worth noting that the unlocking controller 68 is located below the first claw 64, and the second rotating shaft 610 is located on the side of the unlocking controller 68 away from the movable through hole 69. The first claw 64 is made entirely of iron and can be magnetically attracted. The unlocking controller 68 is specifically an electromagnet. When the stretcher needs to be unlocked, the electromagnet is energized to attract the first claw 64, causing the first claw 64 to rotate clockwise around the first rotating shaft 67, causing the second slot to move upward. Then, under the reset action of the return spring 66, the wheel axle disengages from the second claw 65, thereby unlocking the stretcher. At the same time, the present invention can also achieve manual unlocking, that is, manually pressing the first claw 64 causes the first claw 64 to rotate clockwise around the first rotating shaft 67, causing the second slot to move upward, thereby causing the wheel axle to disengage from the second claw 65.

[0070] In this embodiment, a fan-shaped telescopic baffle 2 is provided between the base 11 and the first bracket 31;

[0071] Specifically, the fan-shaped telescopic baffle 2 is composed of several support frames, with an elastic layer connecting adjacent support frames. The support frames are vertically stacked, and one end of each support frame is located at the rotation center of the base 11 and the first bracket 31, that is, near the movable shaft 37 and the spherical bearing with the vertical seat 12. The uppermost support frame is fixed to the bottom of the first bracket 31, and the lowermost support frame is fixed to the top of the base 11. As the first bracket 31 flips, the fan-shaped telescopic baffle 2 also unfolds or retracts accordingly to protect the flipping assembly 1.

[0072] like Figure 14 As shown, when the stretcher platform is in the retracted state, that is, when the stretcher is completely fixed on the third support 51, the control drive cylinder 32 and hydraulic push rod 13 are reset, and the first-level telescopic component 3 and the second-level telescopic component 4 are synchronously retracted into the third-level telescopic component 5. Then, the first-level telescopic component 3, the second-level telescopic component 4 and the third-level telescopic component 5 are slowly rotated and reset until the third-level telescopic component 5 is parallel to the flipping component 1.

[0073] In summary, the folding stretcher platform in the above embodiments of the present invention, when it is necessary to move the stretcher into the vehicle, drives the first support 31 to rotate at a preset angle via the hydraulic push rod 13, and then drives the second support 41 to move a preset distance on the first support 31 via the drive cylinder 32. During the movement of the second support 41, the third support 51 moves synchronously on the second support 41 via the transmission action of the pulley mechanism 42 until the second support 41 and the third support 51 are fully extended. Then, the drive motor 59 drives the lead screw 58 to rotate, thereby driving the stretcher locking assembly 6 to move to the leftmost end of the third support 51. The stretcher is fixed by the stretcher locking assembly 6, and the drive motor 59 causes the stretcher locking assembly 6 to pull the stretcher so that it is completely on the first support 31. Then, the drive cylinder 32 and the hydraulic push rod 13 are controlled to reset, thereby realizing the stretcher transportation process. This replaces the traditional method of manually transporting stretchers, eliminates the need for staff to lift the stretcher, and ensures a stable stretcher transportation process, avoiding secondary injury to the patient.

[0074] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A folding stretcher platform, characterized by, The utility model relates to a kind of medical stretcher, including: Turnover assembly, the turnover assembly includes base, hydraulic push rod articulated on the base and support seat arranged on the base, articulated movable support rod is arranged on the support seat, one end of the movable support rod is articulated movable support frame; First telescopic assembly, rotationally arranged on the turnover assembly, the first telescopic assembly includes first support, drive cylinder fixedly arranged in the first support and push rod arranged on the output end of the drive cylinder, first linkage plate is fixedly arranged below the first support, one side of the first support is articulated with one side of the base, the first support is articulated with the movable support frame; Second telescopic assembly, slidingly arranged on the first telescopic assembly, the second telescopic assembly includes second support and belt pulley mechanism arranged on the second support, the end of the push rod away from the drive cylinder is arranged on the second support, the first linkage plate is fixedly arranged below the belt pulley mechanism; Third telescopic assembly, slidingly arranged on the second telescopic assembly, the third telescopic assembly includes third support, screw rod rotationally arranged on the third support and drive motor arranged on one side of the third support, the drive motor is connected with the screw rod, stretcher locking assembly is threadedly connected on the screw rod, the stretcher locking assembly is slidingly arranged on the third support, slide rails for the stretcher locking assembly sliding are arranged on both sides of the third support, second linkage plate is fixedly arranged on the bottom of the third support, the second linkage plate is fixedly arranged above the belt pulley mechanism; The stretcher locking assembly includes shell, first claw rotationally arranged in the shell through first rotation shaft, second claw rotationally arranged in the shell through second rotation shaft, unlocking controller arranged in the shell and reset spring arranged between the second claw and the second rotation shaft, the shell is provided with a groove with one end opening, the opening direction of the groove faces away from the first claw and the second claw; The side of the first claw close to the second claw is provided with first clamping groove, the side of the second claw close to the first claw is provided with second clamping groove, the top of the second claw is arranged in the first clamping groove, the first rotation shaft is arranged on the side of the first claw away from the groove, the second rotation shaft is arranged on the side of the second claw away from the groove, the side of the first claw away from the groove extends outward until penetrating the shell, the shell is provided with movable through hole for the rotation of the first claw.

2. The folding stretcher platform of claim 1, wherein, The movable support frame is inverted U-shaped structure, one end of the movable support rod is articulated on the inner side of the movable support frame, the inner side of the first support is symmetrically fixedly provided with movable connecting seat, the top end of the movable support frame is rotationally arranged between two movable connecting seats, spherical bearing with vertical seat is fixedly arranged on one side of the base, movable shaft is rotationally arranged below the first linkage plate, the spherical bearing with vertical seat is arranged on the movable shaft.

3. The folding stretcher platform of claim 1, wherein, The second support is fixedly provided with a connecting beam, a pushing seat is fixedly arranged below the connecting beam, one end of the pushing rod away from the driving oil cylinder is fixedly connected with the pushing seat, and a plurality of supporting plates are fixed between the connecting beam and the second support.

4. The folding stretcher platform of claim 1, wherein, The first auxiliary wheel is symmetrically arranged on the outer side of the one end of the second support close to the third support and is slidably arranged on the inner side of the third support.

5. The folding stretcher platform of claim 1, wherein, The second auxiliary wheel is symmetrically arranged on the inner side of the one end of the second support close to the first support and is slidably arranged on the outer side of the first support.

6. The folding stretcher platform of claim 1, wherein, The third auxiliary wheel is symmetrically arranged on the inner side of the one end of the third support close to the second support and is slidably arranged on the outer side of the second support.

7. The folding stretcher platform of claim 1, wherein, The third support is fixedly provided with a limiting plate, the limiting plate is in a T-shaped structure, a stretcher clamping block is symmetrically fixed on one end of the limiting plate, a protective cover is fixed on one side of the third support, the driving motor is arranged in the protective cover, a shaft coupling is arranged on the output end of the driving motor, and one end of the lead screw is connected with the shaft coupling.

8. The folding stretcher platform of claim 1, wherein, The base and the first support are provided with a fan-shaped telescopic baffle.

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