Barrier-free wheelchair access platform for assisting tourists with disabilities

Abstract

To provide a barrier-free wheelchair lifting platform for the disabled, which can prevent the lifting platform from inverting downward and increase stability when the lifting platform is suspended. [Solution] The present invention relates to a barrier-free wheelchair lifting platform for assisting tourists with disabilities, in which side panels are attached to the sides of the handrail beam and move along the longitudinal direction of the handrail beam, a lifting platform perpendicular to the side panel is rotatably attached to the lower end of the front of the side panel, and an extendable suspension rod is rotatably attached between the side panel and the lifting platform, a right-angled triangle structure is formed between the side panel, the lifting platform and the suspension rod, the lower end of the suspension rod is rotatably connected to a sliding plate, a folding plate is rotatably attached to the inner wall on one side of the groove, and one end of the folding plate is slidably attached to one side of the sliding plate.

Description

[Technical Field]

[0001] The present invention relates to the technical field of lifting platforms, and more particularly to a barrier-free wheelchair lifting platform for assisting disabled tourists. [Background technology]

[0002] Currently, China's urban development has reached a world-class level and is gradually moving in the direction of human-centered design. Governments at all levels are making efforts to support tourism for people with disabilities, and various facilities to facilitate activities for people with disabilities are constantly emerging.

[0003] In the prior art, in order to enable disabled people to climb stairs smoothly during their trip, a lifting platform is usually attached to the side of the staircase handrail, and the lifting platform slides in the longitudinal direction of the handrail beam through a power device, so that the disabled person and his / her wheelchair can move together from the bottom of the stairs to the top of the stairs, and vice versa.

[0004] However, because only one side of the lifting platform is currently connected to the handrail beam, after a disabled person moves onto the lifting platform in a wheelchair, the lifting platform itself is subjected to a large amount of gravity while suspended, which tends to cause it to flip downward, posing a significant safety risk. Therefore, in order to solve the above-mentioned problems, the present invention proposes a barrier-free wheelchair lifting platform to support disabled tourists. Summary of the Invention [Means for solving the problem]

[0005] The object of the present invention is to provide a barrier-free wheelchair lifting platform for assisting disabled tourists, in order to solve the problem that the lifting platforms proposed in the background art above remain suspended and pose a significant safety risk during movement.

[0006] In order to achieve the above object, the present invention is realized by the following technical means, which is a barrier-free wheelchair lifting platform for assisting disabled tourists, including: The handrail has side panels, the side panels are attached to the sides of the handrail beam and move along the longitudinal direction of the handrail beam, a lifting platform perpendicular to the side panels is rotatably attached to the front lower end of the side panels, an extendable suspension rod is rotatably attached between the side panels and the lifting platform, and a right-angled triangle structure is formed between the side panels, the lifting platform and the suspension rod, A groove is opened at the bottom of the lifting platform, a slide plate is slidably mounted in the inner cavity of the groove, the lower end of the hanging rod is rotatably connected to the slide plate, a folding plate is rotatably mounted on one inner wall of the groove, one end of the folding plate is slidably mounted on one side of the slide plate, and when the slide plate slides to its maximum stroke, it is held perpendicular to the folding plate.

[0007] Preferably, a limiting slide groove is opened on one side of the sliding plate, a limiting slide block that fits into the limiting slide groove is slidably mounted in the inner cavity of the limiting slide groove, the cross sections of the limiting slide groove and the limiting slide block are both "T" shaped, and one end of the limiting slide block extends outside the sliding plate and is rotatably connected to one end of the folding plate.

[0008] Preferably, there are two folding plates, two position limiting slide grooves and two position limiting slide blocks, the two position limiting slide grooves being located on the upper and lower sides of one side of the slide plate, the two position limiting slide blocks sliding synchronously in opposite directions, and the two folding plates rotating synchronously in opposite directions crossing each other to form an "X" shape.

[0009] Preferably, a threaded rod is attached to the inner cavity of the position limiting slide groove, and the threaded rod passes through the position limiting slide block and slides the position limiting slide block via a screw; a mounting groove is opened on one side of one end of the slide plate; a driving motor is fixedly attached to the inner cavity of the mounting groove; a driving gear is fixedly provided at the output end of the driving motor; two driven gears mesh with the outer sides of the driving gear to transmit power; and the two driven gears are fitted onto the outer ends of the two threaded rods, respectively.

[0010] Preferably, a guide through groove communicating with the groove is drilled on the surface of the lifting platform, two guide through grooves are provided, each corresponding to two hanging rods, and hinge holders are fixedly connected to both ends of the upper surface of the slide plate, and the upper ends of the hinge holders movably pass through the guide through grooves and are rotatably connected to the lower ends of the hanging rods.

[0011] Preferably, the suspension rod includes a sleeve, and connecting levers are movably inserted into both ends of the sleeve, position limiting through-grooves are drilled on the side of the sleeve, and position limiting blocking blocks are fixedly connected to one ends of the two connecting levers that are close to each other, and the position limiting blocking blocks movably pass through the position limiting through-grooves and fit into the position limiting through-grooves.

[0012] Preferably, a positioning block is fixedly attached to the lower end of each of the two sides of the side plate via a bolt, a rotation shaft is movably drilled into the end of the positioning block, and the rotation shaft is fixedly connected to the lifting platform, and after the hinge holder slides close to the positioning block along the longitudinal direction of the guide through groove, the rotation center of the hinge holder and the rotation shaft remain concentric.

[0013] Preferably, inclined plates are attached to all three sides of the platform away from the side plate, and the inclined plates are hung on the ground, and a second connecting rod is fixedly attached to one side of the platform close to the side plate, with a gap left between the second connecting rod and the platform.

[0014] Preferably, a slide block is attached to the bottom rear of the side panel, and the slide block is driven by a power device to slide vertically. A first connecting rod is drilled in the center of the slide block, and interlocking frames are rotatably attached to both ends of the first connecting rod. The interlocking frame is L-shaped, and one end of the interlocking frame is rotatably fitted to the outside of the second connecting rod. When the slide block slides downward, the interlocking frame causes the lifting platform to flip up and fold for storage. [Effects of the Invention]

[0015] Compared with the prior art, the beneficial effects of the present invention are as follows: In this application, a hanging rod is installed between the side panel and the lifting platform, and the side panel, the lifting platform, and the hanging rod form a right-angled triangle structure to increase the stability of the lifting platform when it is suspended and prevent the lifting platform from flipping over downwards. The hanging rod suspends one side of the lifting platform away from the side panel, and a slidable sliding plate is provided within the lifting platform, and the sliding plate is rotatably connected to the lower end of the hanging rod. A rotatable folding plate is attached to the side of the sliding plate. The folding plate slides the sliding plate, and when the folding plate rotates and unfolds, it is held perpendicular to the sliding plate. At this time, the hanging rod is connected to the sliding plate so that the folding plate abuts against the sliding plate while suspending the lifting platform, thereby restricting the sliding of the sliding plate, thereby preventing the lifting platform from rotating downwards. This increases the stability of the lifting platform when it is suspended, and the lifting platform can be folded up and stored when not in use, thereby reducing the space it occupies. [Brief explanation of the drawings]

[0016] [Figure 1] 1 is a perspective view of the overall configuration of the present invention. [Figure 2] 1 is a schematic diagram of the connection between the lifting platform and the side plate of the present invention; [Figure 3] FIG. 1 is a perspective view of a suspension rod configuration of the present invention. [Figure 4] FIG. 1 is a perspective view of a slide plate configuration of the present invention. [Figure 5] FIG. 1 is a partial perspective view of a slide plate configuration of the present invention. DETAILED DESCRIPTION OF THE INVENTION

[0017] In order to clearly and completely explain the object and claims of the present invention and to make the advantages more clear, the following embodiments of the present invention will be described in more detail in conjunction with the accompanying drawings. The specific embodiments described in this specification are not all embodiments, but are intended to illustrate the embodiments of the present invention, and are not intended to limit the embodiments of the present invention. It should be understood that all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present invention.

[0018] In describing the present invention, the orientations or positional relationships indicated by the terms "center," "middle," "top," "bottom," "left," "right," "inside," "outside," "upper," "bottom," "side," "vertical," "horizontal," etc. are based on the orientations or positional relationships shown in the drawings and are merely for ease of description of the present invention and do not indicate or imply that the designated devices or elements must be constructed or operated in a particular orientation or in a particular direction, but are used for the sake of simplicity of description and should not be understood as limitations of the present invention. Furthermore, the terms "one," "first," "second," "third," "fourth," "fifth," and "sixth" are used for descriptive purposes only and should not be understood as indicating or implying relative importance.

[0019] In the description of the present invention, unless otherwise clearly specified and limited, the terms "attached," "connected," and "coupled" should be understood in a broad sense, and may refer to, for example, a fixed connection, a detachable connection, an integral connection, a mechanical connection, an electrical connection, a direct connection, an indirect connection via an intermediate medium, or an internal connection between two elements. Those skilled in the art can specifically understand the specific meaning of the above terms in the present invention.

[0020] For simplicity and explanation, the principles of the embodiments are explained mainly with reference to examples. In the following description, many specific details are proposed to enable a thorough understanding of the embodiments. However, it will be apparent to those skilled in the art that these embodiments may not actually be limited to these specific details. In some instances, well-known methods and structures are not described in detail so as not to unnecessarily obscure the embodiments. Furthermore, all embodiments can be used in combination.

[0021] Referring to Figures 1 to 5, the present invention provides a technical solution. Example 1 A barrier-free wheelchair lift platform for assisting tourists with disabilities, having a side panel 1.

[0022] Specifically, side panel 1 is attached to the side of the handrail beam and moves along the length of the beam. As shown in Figure 1, side panel 1 is a conventional technology. The back of side panel 1 is connected to the step handrail beam in a suspended state, and side panel 1 can slide along the length of the handrail beam. Because the step handrail is installed at an angle, side panel 1 can slide up and down. Additionally, a platform 2 perpendicular to the side panel is rotatably attached to the lower front end of side panel 1. Platform 2 can rotate upward around the end closest to side panel 1, allowing it to be rotated and placed vertically and attached to side panel 1 for storage, thereby reducing space usage when not in use. Furthermore, this device installs a card reader, known in the prior art, with a built-in chip for reading disability certificates on the ground at the bottom end of the stair railing. Only after the card reader reads the disability certificate does platform 2 of this device move horizontally, allowing disabled people to easily move to the top of platform 2 in their wheelchairs and preventing the device from being used by others. An extendable suspension rod 3 is rotatably attached between the side panel 1 and the platform 2, and a right-angled triangle structure is formed between the side panel 1, the platform 2, and the suspension rod 3. As shown in Figure 1, when the suspension rod 3 is extended to its maximum stroke, it can form a right-angled triangle structure together with the side panel 1 and the platform 2. At this time, the suspension rod 3 can suspend one end of the platform 2 that is away from the side panel 1, thereby increasing the stability of the platform 2 itself and increasing the load-bearing capacity of the platform 2. This prevents the platform from flipping downward due to excessive gravity when a disabled person or a wheelchair user gets on, and further reduces safety risks when using the device.

[0023] Next, a groove 21 is opened at the bottom of the lifting platform 2, and a sliding plate 4 is slidably attached in the internal cavity of the groove 21. As the sliding plate 4 slides, it approaches or moves away from the side panel 1, with the lower end of the suspension rod 3 remaining rotatably connected to the sliding plate 4. When the sliding plate 4 slides toward the side panel 1, the suspension rod 3 can contract accordingly. Conversely, when the sliding plate 4 slides away from the side panel 1, the suspension rod 3 can extend accordingly, and when the sliding plate 4 slides to its maximum stroke, the suspension rod 3 also extends to its maximum stroke. A folding plate 5 is rotatably attached to one inner wall of the groove 21, and one end of the folding plate 5 is slidably attached to one side of the sliding plate 4. When the sliding plate 4 slides to its maximum stroke, it and the folding plate 5 are held perpendicular to each other. As can be seen from Figures 2 and 4, when the folding plate 5 rotates, it can slide the sliding plate 4; when the folding plate 5 is perpendicular to the sliding plate 4, it can restrict the sliding of the sliding plate 4; in this case, when the sliding plate 4 slides in the opposite direction, a force is applied to the folding plate 5 along the longitudinal direction of the folding plate 5, preventing the folding plate 5 from rotating. Therefore, when the folding plate 5 remains perpendicular to the sliding plate 4, the hanging rod 3 stabilizes the hanging of the lifting platform 2 and prevents the lifting platform 2 from flipping over downward.

[0024] In order to rotate the folding plate 5, in the present application, a limiting slide groove 41 is opened on one side of the sliding plate 4, and a limiting slide block 42 that fits into the limiting slide groove 41 is slidably mounted in the internal cavity of the limiting slide groove 41, the cross sections of the limiting slide groove 41 and the limiting slide block 42 are both "T" shaped, the limiting slide block 42 can slide only in its longitudinal direction within the internal cavity of the limiting slide groove 41 without leaving the limiting slide groove 41, and one end of the limiting slide block 42 extends outside the sliding plate 4 and is rotatably connected to one end of the folding plate 5. When the limiting slide block 42 slides, it can rotate the folding plate 5 and slide the sliding plate 4 at the same time, that is, the rotation of the folding plate 5 of this device is powered by the sliding of the limiting slide block 42.

[0025] In order to enhance the stability of the folding plate 5 supporting the sliding plate 4, in the present application, two folding plates 5, two position limiting slide grooves 41, and two position limiting slide blocks 42 are provided, and the two position limiting slide grooves 41 are respectively located on the upper and lower sides of one side of the sliding plate 4, and the two position limiting slide blocks slide synchronously in opposite directions, and the two folding plates 5 rotate synchronously in opposite directions to cross each other and form an "X" shape. As shown in Figure 4, the two folding plates 5 can enhance the stability of supporting the sliding plate 4, and the rotation trajectories of the two folding plates 5 are located on two planes, respectively, thereby avoiding mutual interference and collision.

[0026] In order to rotate the two folding plates 5 synchronously in opposite directions, in the present application, a threaded rod 43 is installed in the internal cavity of the position limiting slide groove 41, and the threaded rod 43 passes through the position limiting slide block 42 and slides the position limiting slide block 42 via a screw. A mounting groove 44 is opened on one side of one end of the slide plate 4, and a driving motor 45 is fixedly installed in the internal cavity of the mounting groove 44. A driving gear 46 is fixedly installed at the output end of the driving motor 45, and two driven gears 47 mesh with the outer side of the driving gear 46 to transmit power. The two driven gears 47 are respectively fitted onto the outer ends of the two threaded rods 43. As shown in Figure 5, while the drive motor 45 is operating, the drive gear 46 can be rotated, which in turn causes the two driven gears 47 to rotate synchronously in opposite directions, so that the two position limiting slide blocks 42 can slide synchronously in opposite directions, thereby rotating and unfolding the folding plate 5 as shown in Figure 4 until it rotates to the position shown in Figure 2. At this time, when the folding plate 5 is perpendicular to the sliding plate 4, it can support and position the sliding plate 4 and prevent it from sliding freely.

[0027] In order to rotatably connect the lower ends of the hanging rods 3 to the sliding plate 4, in the present application, guide through-grooves 22 communicating with the grooves 21 are drilled on the surface of the lifting platform 2, and two guide through-grooves 22 are provided, one for each of the two hanging rods 3. Hinge holders 48 are fixedly connected to both ends of the upper surface of the sliding plate 4, and the upper ends of the hinge holders 48 movably pass through the guide through-grooves 22 and are rotatably connected to the lower ends of the hanging rods 3. As can be seen from Figures 4 and 5, when the sliding plate 4 slides, the hinge holders 48 slide along the longitudinal direction of the guide through-grooves 22, and can slide the lower ends of the hanging rods 3 horizontally. When the folding plate 5 is perpendicular to the sliding plate 4, the hinge holders 48 slide to the maximum stroke and extend the hanging rods 3 to the maximum stroke. At this time, the suspension rod 3 can suspend the slide plate 4 via the hinge holder 48 and further suspend the lift table 2 .

[0028] To explain the structure of the hanging rod 3, in this application, the hanging rod 3 includes a sleeve 31, connecting levers 32 are movably inserted into both ends of the sleeve 31, position limiting through-grooves 33 are drilled on the side of the sleeve 31, position limiting blocking blocks 34 are fixedly connected to one ends of the two connecting levers 32 that are close to each other, and the position limiting blocking blocks 34 movably pass through and fit into the position limiting through-grooves 33. As shown in Figure 3, the hanging rod 3 itself is extendable, and when the hanging rod 3 is extended to its maximum stroke, the hanging rod 3 can play a role in suspending the lifting platform 2.

[0029] In order to prevent the suspension rod 3 from interfering with the folding storage of the lifting platform 2, in the present application, a positioning block 11 is fixedly attached to the lower end of both sides of the side panel 1 via bolts, a rotation shaft 23 is movably drilled into the end of the positioning block 11, and the rotation shaft 23 is fixedly connected to the lifting platform 2, and after the hinge holder 48 slides close to the positioning block 11 along the longitudinal direction of the guide through groove 22, the rotation center of the hinge holder 48 and the rotation shaft 23 remain concentric. When the slide plate 4 slides and approaches the side panel 1, the folding plate 5 is folded and stored, and the hanging rod 3 is contracted. When the hanging rod 3 is contracted to the shortest stroke, the center of rotation between the hanging rod 3 and the hinge holder 48 corresponds exactly to the rotation axis 23. At this time, the lifting platform 2 can be turned upside down and folded and stored, and since the hanging rod 3 does not move, the hanging rod 3 can be prevented from interfering with the folding and storage of the lifting platform 2.

[0030] In the present application, to make it easier for disabled persons to move onto the platform 2, in order to make it easier for disabled persons to move onto the top surface of the platform 2 in a wheelchair, inclined plates 24 are attached to all three sides of the platform 2 that are farther from the side panel 1, and the inclined plates 24 are hung on the ground, and a second connecting rod 25 is fixedly attached to one side of the platform 2 that is close to the side panel 1, and a gap is left between the second connecting rod 25 and the platform 2.

[0031] In order to fold the platform 2 for storage, in the present application, a slide block 12 is attached to the bottom rear of the side panel 1, and the slide block 12 is driven by a power device to slide vertically. The power device may be composed of a cylinder, a hydraulic cylinder, etc., and it is only necessary that the power device be capable of providing a vertical driving force to the slide block 12. A first connecting rod 13 is drilled in the center of the slide block 12, and interlocking frames 14 are rotatably attached to both ends of the first connecting rod 13. The interlocking frame 14 is "L" shaped, and one end of the interlocking frame 14 is rotatably fitted onto the outside of the second connecting rod 25. When the slide block 12 slides downward, the interlocking frame 14 flips the platform 2 upside down, allowing it to be folded for storage. As shown in Figure 2, when the slide block 12 slides, the first connecting rod 13 and the interlocking frame 14 move downward accordingly, but the second connecting rod 25 cannot move downward. Therefore, when the interlocking frame 14 applies a pressing force to the second connecting rod 25, the lifting platform 2 rotates around the rotation axis 23, thereby enabling the lifting platform 2 to be folded and stored. Conversely, when the slide block 12 moves upward, the lifting platform 2 can be rotated and unfolded.

[0032] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that changes, modifications, substitutions and variations can be made without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents. [Explanation of symbols]

[0033] 1, side plate; 11, positioning block; 12, slide block; 13, first connecting rod; 14, interlocking frame; 2, lifting platform; 21, groove; 22, guide through groove; 23, rotating shaft; 24, inclined plate; 25, second connecting rod; 3, hanging rod; 31, sleeve; 32, connecting lever; 33, position limiting through groove; 34, position limiting blocking block; 4, slide plate; 41, position limiting slide groove; 42, position limiting slide block; 43, threaded rod; 44, mounting groove; 45, driving motor; 46, driving gear; 47, driven gear; 48, hinge holder; 5, folding plate.

Claims

1. A barrier-free wheelchair lift platform for assisting tourists with disabilities, It has a side panel (1), the side panel (1) is attached to the side of the handrail beam, and The side panel (1) moves along the longitudinal direction of the handrail beam, and a lifting platform (2) perpendicular to the side panel is rotatably attached to the front lower end of the side panel (1), and an extendable suspension rod (3) is rotatably attached between the side panel (1) and the lifting platform (2), so that a right-angled triangle structure is formed between the side panel (1), the lifting platform (2), and the suspension rod (3); A groove (21) is formed at the bottom of the platform (2), a sliding plate (4) is slidably mounted in the inner cavity of the groove (21), the lower end of the hanging rod (3) is rotatably connected to the sliding plate (4), a folding plate (5) is rotatably mounted on one inner wall of the groove (21), one end of the folding plate (5) is slidably mounted on one side of the sliding plate (4), and the sliding plate (4) and the folding plate (5) are held perpendicular to each other when slid to their maximum stroke.

2. 2. The barrier-free wheelchair lifting platform for assisting disabled tourists according to claim 1, characterized in that: a position-limiting slide groove (41) is opened on one side of the slide plate (4); a position-limiting slide block (42) that fits into the position-limiting slide groove (41) is slidably mounted in the internal cavity of the position-limiting slide groove (41); the cross sections of the position-limiting slide groove (41) and the position-limiting slide block (42) are both "T" shaped; one end of the position-limiting slide block (42) extends outside the slide plate (4) and is rotatably connected to one end of the folding plate (5).

3. The barrier-free wheelchair lifting platform for assisting disabled tourists as claimed in claim 2, characterized in that there are two folding plates (5), two position-limiting slide grooves (41) and two position-limiting slide blocks (42), the two position-limiting slide grooves (41) are respectively located on the upper and lower sides of one side of the slide plate (4), the two position-limiting slide blocks (42) slide synchronously in opposite directions, and the two folding plates (5) rotate synchronously in opposite directions to cross each other and form an "X" shape.

4. 4. The barrier-free wheelchair lifting platform for assisting disabled tourists as claimed in claim 3, characterized in that a threaded rod (43) is installed in the internal cavity of the position-limiting sliding groove (41), and the threaded rod (43) passes through the position-limiting sliding block (42) and slides the position-limiting sliding block (42) via a screw; a mounting groove (44) is opened on one side of one end of the sliding plate (4), a driving motor (45) is fixedly installed in the internal cavity of the mounting groove (44), a driving gear (46) is fixedly installed at the output end of the driving motor (45), and two driven gears (47) are meshed with the outer sides of the driving gear (46) to transmit power, and the two driven gears (47) are respectively fitted on the outer ends of the two threaded rods (43).

5. 2. The barrier-free wheelchair lifting platform for assisting disabled tourists according to claim 1, characterized in that the surface of the lifting platform (2) is drilled with a guide through-groove (22) communicating with the groove (21), there are two guide through-grooves (22), each corresponding to two suspension rods (3), and hinge holders (48) are fixedly connected to both ends of the upper surface of the sliding plate (4), the upper ends of the hinge holders (48) movably passing through the guide through-grooves (22) and rotatably connected to the lower ends of the suspension rods (3).

6. 2. The barrier-free wheelchair lifting platform for assisting disabled tourists as claimed in claim 1, characterized in that the hanging rod (3) includes a sleeve (31), and connecting levers (32) are movably inserted into both ends of the sleeve (31), position-limiting through-grooves (33) are drilled on the side of the sleeve (31), and position-limiting blocking blocks (34) are fixedly connected to one ends of the two connecting levers (32) that are close to each other, and the position-limiting blocking blocks (34) movably pass through the position-limiting through-grooves (33) and fit into the position-limiting through-grooves.

7. The barrier-free wheelchair lifting platform for assisting disabled tourists as claimed in claim 5, characterized in that positioning blocks (11) are fixedly attached to the lower ends of both sides of the side plates (1) via bolts, a rotating shaft (23) is movably drilled at the end of the positioning block (11), and the rotating shaft (23) is fixedly connected to the lifting platform (2), and after the hinge holder (48) slides and approaches the positioning block (11) along the longitudinal direction of the guide through groove (22), the rotation center of the hinge holder (48) and the rotating shaft (23) remain concentric.

8. The barrier-free wheelchair lifting platform for assisting disabled tourists as described in claim 1, characterized in that the platform (2) has three sides remote from the side panel (1) attached with inclined plates (24), which are hung on the ground, and the platform (2) has one side close to the side panel (1) fixedly attached with a second connecting rod (25), with a gap left between the second connecting rod (25) and the platform (2).

9. 10. The barrier-free wheelchair lifting platform for assisting disabled tourists as claimed in claim 8, characterized in that: a sliding block (12) is attached to the bottom of the rear of the side panel (1), and the sliding block (12) is driven by a power device to slide vertically; a first connecting rod (13) is drilled in the center of the sliding block (12), and interlocking frames (14) are rotatably attached to both ends of the first connecting rod (13), the interlocking frame (14) is L-shaped, and one end of the interlocking frame (14) is rotatably fitted to the outside of the second connecting rod (25); when the sliding block (12) slides down, the interlocking frame (14) causes the lifting platform (2) to flip upside down and fold up for storage.

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