Intelligent protective electric slope plate

Abstract

The utility model provides an intelligent protective electric slope plate, which comprises a storage frame, an electric slope plate, a power supply device, a power supply device, a power supply device and a power supply device, and is characterized in that a mounting space is formed in the storage frame; the slope plate assembly is arranged in the mounting space in a sliding mode and comprises a slope plate body, a rotating plate, a connecting plate and a sliding support, one side of the rotating plate is rotationally connected with the slope plate body, the other side of the rotating plate is rotationally connected with the connecting plate, the other side of the connecting plate is fixed to the sliding support, and sliding wheels are arranged on the two sides of the sliding support; the driving assembly is arranged in the mounting space and comprises a plurality of driving gears, a driving chain and a driving motor, and the sliding support is fixed to the driving chain and can be driven by the driving chain to move in the extending direction of the guide rail; the safety assembly comprises an electronic clutch mechanism and a manual clutch mechanism, according to the automatic folding and unfolding device, an original manual type slope plate is improved, automatic folding and unfolding of the slope plate are achieved, and the running safety of the slope plate is further improved.

Description

Technical Field

[0001] The utility model relates to the technical field of vehicle-boarding assistance devices, in particular to an electric telescopic ramp structure which adopts an electric power source to control the ramp to be lowered or retracted. Background Art

[0002] In public transportation systems, especially buses, dedicated wheelchair ramp systems are designed and implemented to ensure barrier-free access for people with limited mobility. These ramps, as a key auxiliary facility, are designed to provide a smooth transition, allowing wheelchair users to enter and exit the vehicle safely and conveniently. In traditional designs, wheelchair ramps are usually hidden under the bottom of the bus. When needed, the ramp is unfolded, with one end firmly in contact with the ground and the other end seamlessly connected to the floor inside the car, forming an inclined passage that allows wheelchairs to enter and exit the bus through this path.

[0003] However, traditional wheelchair ramps, especially those that are manually retractable, have significant limitations. For example, the manually retractable vehicle ramp disclosed in Chinese Utility Model Patent Publication No. CN210170312U, while somewhat addressing the issue of wheelchair access, still requires manual intervention. The user or an assistant must manually extend the ramp and then manually retract it after use. This process is not only time-consuming but can also be an additional burden for the user, reducing the user experience and overall system efficiency.

[0004] In view of this, the inventor specially designed an intelligent protective electric ramp, which resulted in this case. Utility Model Content

[0005] In order to solve the above problems, the technical solution of the present utility model is as follows:

[0006] An intelligent protective electric ramp, comprising:

[0007] A storage frame having an installation space formed therein and an opening formed on one side, wherein the installation space is separated from the opening and two sides thereof form guide rails;

[0008] The ramp assembly is arranged in the installation space for sliding along the guide rail, and includes a ramp body, a rotating plate, a connecting plate, and a sliding bracket. One side of the rotating plate is rotatably connected to one side of the ramp body and the other side is rotatably connected to one side of the connecting plate. The other side of the connecting plate is fixed to the sliding bracket. Sliding wheels that cooperate with the guide rail are provided on both sides of the sliding bracket.

[0009] A drive assembly is disposed in the installation space and includes a plurality of drive gears, a drive chain meshing and transmitting between the drive gears, and a drive motor connected to one of the drive gears. The sliding bracket is fixed to the drive chain and can move along the extension direction of the guide rail under the drive chain.

[0010] The safety component includes an electronic clutch mechanism and a manual clutch mechanism, which are used to control the clutch state between the drive motor and the drive gear.

[0011] Preferably, the sliding bracket includes a fixed frame parallel to the connecting plate, side frames perpendicular to both ends of the fixed frame and extending parallel to the same side, and a connecting frame arranged on one side of the fixed frame and parallel to the side frame. The connecting plate is in parallel contact with the fixed frame and is locked and fixed, and the sliding wheel is arranged on the side where the two side frames are away from each other.

[0012] Preferably, the distance between the two sides of the ramp body is equal to the distance between the two sliding wheels, and the distance between the two sides of the connecting plate and the rotating plate is smaller than the length of the fixed frame so that a clearance area is formed between the fixed frame and the ramp body, and a pair of auxiliary push rods perpendicular to the fixed frame are fixed at both ends of the fixed frame extending toward the clearance area.

[0013] Preferably, the electronic clutch mechanism includes a control module and a torque sensor, the torque sensor is electrically connected to the input end of the control module, and the output end of the control module is electrically connected to the drive motor.

[0014] Preferably, the guide rail is provided with a plurality of Hall sensors along its extension direction, and the plurality of Hall sensors are electrically connected to the input end of the control module and are used to sense the movement position of the ramp body.

[0015] Preferably, the manual clutch mechanism includes a clutch that is connected to the output shaft of the drive motor and the drive gear, a clutch pressure rod for controlling the clutch, and a control member for controlling the clutch pressure rod. The control member is rotatably arranged in the installation space and one end thereof is movably abutted against the clutch pressure rod. The other end of the control member is connected to a control rope, and the control rope extends to one side of the opening of the storage frame.

[0016] Preferably, the storage frame is provided with a support frame on one side of the opening, the movable end of the control pull is provided with a button that can be moved on the support frame, and a plurality of wire boards are provided on the side of the storage frame and in the installation space, and the wire boards are provided with wire grooves for the control pull rope to pass through.

[0017] Preferably, auxiliary rollers are symmetrically provided on both sides of the connection position between the ramp plate body and the rotating plate.

[0018] Preferably, the guide rail is provided with a guide block at the top position close to the opening of the installation space, and the lower end surface of the guide block is recessed with a guide groove with an opening facing downward. The structure of the guide groove allows the rear end of the ramp body to move upward and downward in sequence when passing through the opening of the installation space.

[0019] Preferably, the ramp body is away from the connecting plate on one side and the first auxiliary wheels are symmetrically arranged at both ends thereof, the storage frame is provided with a downward-flipping door panel at the opening position of the installation space, and the inner side of the door panel and the second auxiliary wheels that can be in rolling contact with the lower end surface of the ramp body are symmetrically provided on both sides in the length direction thereof.

[0020] The utility model improves the shortcomings of the existing manually pull-out ramp and significantly improves the convenience and safety of the auxiliary boarding device, which is specifically reflected in the following aspects:

[0021] Firstly, through the integrated drive components, the deployment and retraction process of the ramp is completely electrically driven, without the need for human intervention, which greatly reduces the physical burden on users and assistants and improves the convenience and efficiency of operation.

[0022] Secondly, the torque sensor and control module in the electronic clutch mechanism can achieve precise control of the drive motor. When the ramp is blocked and the torque is greater than the set value, it will automatically stop, ensuring the smoothness and safety of the ramp during movement and avoiding accidental injuries caused by improper operation.

[0023] Furthermore, the manual clutch mechanism in the safety component provides a backup operation method in emergency situations. Even in the event of a power outage, the ramp can be deployed or retracted through manual operation, enhancing the system's reliability and emergency response capabilities.

[0024] In addition, the Hall sensor installed on the guide rail can monitor the position of the ramp in real time to ensure that it reaches the predetermined deployment or retraction position accurately, avoiding over-extension or incomplete retraction.

[0025] In particular, the design of the ramp assembly takes into account the flexibility and stability of actual use. For example, the addition of auxiliary push rods, auxiliary rollers and guide blocks increases the support and guidance of the ramp during movement, ensuring the stability and safety of the ramp during use.

[0026] Humanized details: Auxiliary rollers are installed at the connection between the ramp body and the rotating plate, and the downward-folding door panel and second auxiliary wheel at the opening of the storage frame further ensure the smooth and comfortable process of deploying and retracting the ramp.

[0027] In summary, the present invention improves the original manual ramp, not only realizing the automatic retraction and extension of the ramp, but also further improving the safety of the ramp operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of the present invention. The schematic embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention.

[0029] in:

[0030] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0031] Figure 2 This is a schematic diagram of the top view of the structure of the utility model;

[0032] Figure 3 This is a schematic diagram of the three-dimensional structure of the slope plate assembly of the utility model;

[0033] Figure 4 This is a schematic diagram of the top view of the slope plate assembly of the utility model;

[0034] Figure 5 This is a side structural diagram of the slope plate assembly of the utility model;

[0035] Figure 6 This is a schematic diagram of the three-dimensional structure of the driving component in the present invention;

[0036] Figure 7 This is a partial cross-sectional structural diagram highlighting the drive assembly in the present invention;

[0037] Figure 8 This is a partial structural diagram highlighting the storage frame and drive assembly in the utility model;

[0038] Figure 9 This is a partial cross-sectional structural diagram highlighting the guide rail in the present invention;

[0039] Figure 10 This is a block diagram showing the connection principle of the control module in the present utility model;

[0040] Figure 11 It is a schematic diagram of the use state of the utility model.

[0041] Description of labels:

[0042] 10. Storage frame; 11. First frame; 12. Second frame; 13. Panel; 14. Mounting frame; 15. Door panel; 151. Second auxiliary wheel; 20. Mounting space; 201. Torsion spring; 21. Guide rail; 30. Ramp assembly; 31. Ramp body; 311. Auxiliary roller; 312. First auxiliary wheel; 32. Rotating plate; 321. Hook; 322. First hinge seat; 323. Clearance space; 33. Connecting plate; 331. Second hinge seat; 332. Connecting space; 333. Hinge shaft; 34. Sliding bracket; 341. Fixed bracket; 342. Side bracket; 343. Connecting frame; 344, connecting seat; 35, sliding wheel; 36, yield area; 37, auxiliary push rod; 371, guide plate; 40, drive assembly; 41, drive gear; 42, drive chain; 43, drive motor; 44, mounting plate; 50, electronic clutch mechanism; 51, control module; 52, torque sensor; 53, Hall sensor; 60, manual clutch mechanism; 61, clutch; 62, clutch pressure rod; 63, control part; 70, support frame; 71, wire plate; 72, wire groove; 80, guide block; 81, guide groove; 82, first transition edge; 83, second transition edge. DETAILED DESCRIPTION

[0043] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention more clear and understandable, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0044] See also Figures 1 to 11 , is an intelligent protective electric ramp as the best embodiment of the utility model, comprising:

[0045] The storage frame 10 has an installation space 20 formed therein and an opening formed on one side. The installation space 20 is separated from the opening by guide rails 21 formed on both sides.

[0046] In this embodiment, the storage frame 10 is a thin rectangular parallelepiped as a whole, including two first frames 11 constituting wide sides, two second frames 12 constituting long sides, and panels 13 covering the upper and lower sides of the first frame 11 and the second frame 12 (the upper panel 13 is hidden in the figure to facilitate the display of the internal structure). The first frame 11, the second frame 12 and the panel 13 enclose an installation space 20, and an opening connected to the installation space 20 is formed at the position of one of the first frames 11. The aforementioned guide rail 21 is formed by the inner sides of the two second frames 12 and the panel 13. The guide rail 21 extends and is distributed along the length direction of the second frame 12 and is connected to the installation space 20. Two groups of L-shaped mounting frames 14 are symmetrically arranged on the opposite sides of the two second frames 12. The height of the storage frame 10 is designed to be low so that it can be installed and fixed on the bottom of the vehicle in a thin manner.

[0047] In addition, in this embodiment, a downward-folding door panel 15 is provided at the opening position of the installation space 20. The door panel 15 is installed with the bottom edge of the opening through a hinge, and a torsion spring 201 can be provided to achieve automatic closing of the door panel 15 and convenient opening.

[0048] The utility model also includes a ramp assembly 30, which is slidably arranged in the installation space 20 along the guide rail 21, and includes a ramp body 31, a rotating plate 32, a connecting plate 33 and a sliding bracket 34. The ramp body 31 is rectangular and adapted to the shape of the installation space 20. Its thickness is adapted to the height of the guide rail 21 so that both sides thereof can slide smoothly in the guide rail 21. The rotating plate 32 is a thin rectangular plate with a shorter width. One side of the rotating plate 32 is rotatably connected to one side of the ramp body 31 and the other side is rotatably connected to one side of the connecting plate 33. The other side of the connecting plate 33 is fixed to the sliding bracket 34. Sliding wheels 35 that cooperate with the guide rail 21 are provided on both sides of the sliding bracket 34.

[0049] Specifically, in this embodiment, a hook portion 321 extending upwardly along the bottom of the rotating plate 32 is provided on the side of the rotating plate 32 away from the ramp plate body 31. The upper end of the hook portion 321 extends toward the ramp plate body 31 to form a limiting edge (not shown in the figure). A limiting structure (not shown in the figure) that cooperates with the hook portion 321 and the limiting edge is formed on the inner side of the opening of the installation space 20. When the ramp plate body 31 is fully pushed out of the door panel 15, the hook portion 321 of the rotating plate 32 forms a limit with the limiting structure, preventing the rotating plate 32 from moving outward, thereby When the ramp body 31 is pushed further outward, the rotating plate 32 rotates upward with its hook portion 321 as a fulcrum, pulling up the side of the ramp body 31 and the rotating plate 32 where they are rotatably connected. During the pulling-up process, the angle between the ramp body 31 and the rotating plate 32 changes continuously. When the sliding bracket 34 moves to the extreme position, the inner side of the ramp body 31 is lifted to the highest position under the pull of the rotating plate 32, so that the top end of the ramp body 31 can cross the bottom of the door and overlap with the floor inside the car, making it easier to push the wheelchair onto the bus.

[0050] The cam 332 is actuated by a spring 331 which is adapted to engage the second end of the cam 332 and engage with the second end of the cam 331. The cam 332 is actuated by a spring 331 which is adapted to engage the second end of the cam 332 and engage with the second end of the cam 331.

[0051] In addition, in this embodiment, the rotational connection between the ramp plate body 31 and the rotating plate 32 is consistent with the connection structure between the rotating plate 32 and the connecting plate 33 .

[0052] The guide rail 21 is provided with a drive assembly 40 disposed in the installation space 20 and including a plurality of drive gears 41, a drive chain 42 meshing and transmitting between the drive gears 41, and a drive motor 43 connected to one of the drive gears 41. The sliding bracket 34 is fixed to the drive chain 42 and can be moved along the extension direction of the guide rail 21 by the drive chain 42.

[0053] In this embodiment, a driving gear 41 is fixed to the middle part of the inner side of the first frame 11 close to the door panel 15, and a mounting plate 44 is provided on the inner side of the first frame 11 on the other side and at a position opposite to the aforementioned driving gear 41. The driving motor 43 is horizontally mounted on the bottom of the driving plate, and three driving gears 41 distributed in a triangle are also mounted on the bottom of the mounting plate 44, one of which is opposite to the driving gear 41 at the position of the door panel 15, and one of the other two driving gears 41 is connected to the driving motor 43 for transmission, and the other driving gear 41 is used to limit the driving chain 42, so that the three driving gears 41 cooperate with the driving gear 41 at the position of the door panel 15 so that the driving chain 42 forms a waist-shaped transmission path with an overall linear circular transmission between the two first frames 11.

[0054] The vehicle further includes a safety component, which includes an electronic clutch mechanism 50 and a manual clutch mechanism 60 for controlling the clutch state between the drive motor 43 and the drive gear 41 .

[0055] Preferably, the sliding bracket 34 includes a fixed frame 341 parallel to the connecting plate 33, a side frame 342 perpendicular to both ends of the fixed frame 341 and extending parallel to the same side, and a connecting frame 343 arranged on one side of the fixed frame 341 and parallel to the side frame 342. The connecting plate 33 is in parallel contact with the fixed frame 341 and is locked and fixed. The sliding wheel 35 is arranged on the side where the two side frames 342 are away from each other. In this embodiment, a reinforcing plate (not marked in the figure) is added between the side frame 342 and the connecting frame 343 to strengthen the connection strength between the side frame 342 and the fixed frame 341.

[0056] In this embodiment, in order to realize the driving of the sliding bracket 34, the connecting bracket 343 is arranged in the middle of the fixing bracket 341, and a pair of connecting seats 344 are arranged at the upper end of the connecting bracket 343 in parallel along the extension direction of the guide rail 21. The driving chain 42 is interrupted at the position of the mounting plate 44, and the two ends of the disconnected position are respectively fixed on one of the connecting seats 344, thereby fixing the connecting bracket 343 and the driving chain 42. At this time, the ramp plate body 31, the rotating plate 32, the connecting plate 33 and the sliding bracket 34 are completely located in the installation space 20 and are in the initial position. When the driving motor 43 is working, the four driving gears 41 drive the driving chain 42 for circular transmission, and the driving chain 42 drives the connecting bracket 343 through the connecting seat 344 at its disconnected position along its chain transmission direction toward the door panel 15, thereby driving the sliding bracket 34 to move, thereby realizing the pushing action of the ramp plate body 31.

[0057] Preferably, Figure 3 、 4 As shown, the distance between the two sides of the ramp body 31 is equal to the distance between the two sliding wheels 35, and the distance between the two sides of the connecting plate 33 and the rotating plate 32 is less than the length of the fixing frame 341 so that a clearance area 36 is formed between the fixing frame 341 and the ramp body 31. A pair of auxiliary push rods 37 perpendicular to the fixing frame 341 are fixed at both ends of the fixing frame 341 toward the clearance area 36. In this embodiment, the auxiliary push rod 37 is in the shape of a slender thin sheet. The upper end of the auxiliary push rod 37 forms a vertically distributed guide piece 371, which is arranged along the connecting plate 3 One side of the guide piece 371 extends downwardly in the direction of the ramp body 31, and the sum of the heights of the guide piece 371 and the auxiliary push rod 37 is less than that of the connecting plate 33, so that the auxiliary push rod 37 can be conveniently hidden in the clearance area 36. In actual operation, the auxiliary push rod 37 can follow the two sides of the connecting plate 33 and be hidden in the guide rail 21. When the ramp body 31 is pulled out or pushed in the door panel 15, the auxiliary push rod 37 can support the bottom surface of the ramp body 31, so that it is stably supported during the pulling process and guided during the retraction process.

[0058] Preferably, Figure 10As shown, the electronic clutch mechanism 50 includes a control module 51 and a torque sensor 52. The torque sensor 52 is electrically connected to the input end of the control module 51, and the output end of the control module 51 is electrically connected to the drive motor 43. In this embodiment, the control module 51 can be an MCU microprocessor. By presetting a certain torque value, the automatic shutdown of the drive motor 43 when the torque is greater than the set value can be achieved, thereby ensuring the smoothness and safety of the ramp during movement and avoiding accidental injuries caused by improper operation.

[0059] Preferably, combined Figure 10 The guide rail 21 is provided with a plurality of Hall sensors 53 along its extension direction. The plurality of Hall sensors 53 are electrically connected to the input end of the control module 51 and are used to sense the movement position of the ramp body 31. Specifically, a plurality of mounting holes (not shown in the figure) connected to the guide rail 21 are provided on the second frame 12 along its length. The Hall sensors 53 are placed in the mounting holes and fixed. Thus, the position of the ramp can be monitored in real time by the Hall sensors 53 provided on the guide rail 21 to ensure that it reaches the predetermined deployment or retraction position accurately and avoids over-extension or incomplete retraction.

[0060] Preferably, Figure 6 、 7 As shown in Figure 8, the manual clutch mechanism 60 includes a clutch 61 that is transmission-connected to the output shaft of the drive motor 43 and the drive gear 41, a clutch pressure rod 62 for controlling the clutch 61, and a control member 63 for controlling the clutch pressure rod 62. The control member 63 is rotatably arranged in the installation space 20 and one end thereof is movably abutted against the clutch pressure rod 62. The other end of the control member 63 is connected to a control rope (not shown in the figure), and the control rope extends to one side of the opening of the storage frame 10.

[0061] In this embodiment, Figure 1 、 3 4, the clutch 61 is arranged at the bottom of the mounting plate 44, and the drive motor 43 is arranged on one side of the clutch 61. In addition, in order to cooperate with the drive chain 42, a clearance space 323 is opened in the middle position of the hook 321. Therefore, by cooperating with the drive gear 41, the drive chain 42, the clearance space 323 and the connecting seat 344, the thickness of the driving part of the ramp body 31 can be fully compressed. Compared with the existing solution, its thickness is smaller, the occupancy is lower, and it is easy to promote and use.

[0062] like Figure 8As shown, the control member 63 is an L-shaped sheet, with a connection hole (not marked in the figure) for connecting to the control rope at its bottom, and the two sides of its top are hinged in the open groove (not marked in the figure) on one side of the mounting plate 44, so that when the control rope is pulled, the upper end of the control member 63 can be pressed against the clutch pressure rod 62, thereby disengaging the connection between the clutch 61 and the motor output shaft, and controlling the ramp assembly 30 to achieve manual shutdown.

[0063] Preferably, Figure 1 As shown, the storage frame 10 is provided with a support frame 70 on one side of the opening, and the movable end for controlling the lifting is provided with a button (not shown in the figure) that can be moved on the support frame 70. A number of wire boards 71 are provided on the side of the storage frame 10 and in the installation space 20. The wire boards 71 are provided with wire grooves 72 for the control rope to pass through. Thus, the button can be movably fixed on the support frame 70 through the wire boards 71 and the support frame 70. By pulling the button, the clutch 61 can be used to disengage the transmission connection between the drive motor 43 and the drive gear 41 through the control rope and the control member 63, thereby realizing manual shutdown.

[0064] Preferably, Figure 3 、 4 As shown in FIG. 5 , auxiliary rollers 311 are symmetrically provided on both sides of the connection position between the ramp plate body 31 and the rotating plate 32 .

[0065] Preferably, Figure 9 As shown, the guide rail 21 is provided with a guide block 80 at the top position close to the opening of the installation space 20, and the lower end surface of the guide block 80 is concavely provided with a guide groove 81 with an opening facing downward. The structure of the guide groove 81 allows the rear end of the ramp body 31 to move upward and downward in sequence when passing through the opening of the installation space 20. The ramp body 31 is away from the side of the connecting plate 33 and the first auxiliary wheels 312 are symmetrically provided at both ends thereof. The storage frame 10 is provided with a downward-flipping door panel 15 at the opening position of the installation space 20. The inner side of the door panel 15 and the two sides thereof in the length direction are symmetrically provided with second auxiliary wheels 151 that can roll in contact with the lower end surface of the ramp body 31. Specifically, In this embodiment, there is an arc-shaped transition edge between the guide groove 81 and the guide rail 21, and a first transition edge 82 is formed on the side away from the installation space 20, and a second transition edge 83 is formed on the side close to the installation space 20. The transition position of the first transition edge 82 is lower than the transition position of the second transition edge 83. Therefore, when the rear end of the ramp body 31 moves to this position, the first auxiliary wheel 312 moves along the track path formed by the guide groove 81, first moving upward and then moving downward, guiding and buffering the push-out of the ramp body 31, preventing the ramp body 31 from falling directly after being pushed out of the door panel 15 position, thereby further improving the stability of the ramp body 31 during operation.

[0066] The installation space 20 is provided with a stop structure (not shown in the figure) at the opening position for stopping the front end of the sliding bracket 34, so that the sliding bracket 34 can move within a limited position between the stop structure and the initial position.

[0067] The working process of this utility model is as follows:

[0068] like Figure 11 As shown, first, the drive motor 43 is started by the switch of the control module 51, and the drive motor 43 makes the drive gear 41 work, driving the drive chain 42 to circulate. The drive chain 42 drives the sliding bracket 34 to move toward the direction close to the door panel 15 through the connecting seat 344 at its disconnected position, and then the ramp body 31 contacts the door panel 15 and pushes the door panel 15 open. The second auxiliary wheel 151 on the door panel 15 contacts the lower end surface of the ramp body 31 to guide and assist the ramp body 31 to be pushed out. Then, when the rear end of the ramp body 31 moves to the position of the guide block 80, the bottom surface of the ramp body 31 is used as a fulcrum, and the rear end of the ramp rises. In this process, the auxiliary roller 311 moves along the guide groove The trajectory movement of the groove 81 causes the rear end of the ramp body 31 to move upward and then downward, forming a relatively stable contact process between the front end of the ramp and the ground. Subsequently, the ramp body 31 completely passes through the position of the door panel 15, and the hook 321 of the rotating plate 32 contacts the limiting structure, driving the rear end of the ramp body 31 to rise. During this process, the end of the auxiliary push rod 37 contacts the lower end surface of the ramp body 31 to support and guide it, so that the rear end of the ramp body 31 rises stably. Finally, when the sliding bracket 34 moves to the stop structure position, the rear end of the ramp body 31 is lifted to the highest position, and its front end naturally overlaps with the bottom surface to form an inclined aisle, which is convenient for pushing the wheelchair onto the bus.

[0069] On the contrary, the sliding bracket 34 is retracted under the drive of the driving motor 43, pulling the ramp plate body 31 in the opposite direction into the guide rail 21. During this process, the auxiliary push rod 37 also supports and guides the bottom of the ramp plate body 31, so that it can smoothly penetrate into the guide rail 21, and the torsion spring 201 also assists in the reset of the rotating plate 32, making the reset process of the rotating plate 32 more stable. Finally, when the ramp plate body 31 is completely moved into the installation space 20, the door panel 15 is automatically closed under the action of the torsion spring 201, completing the movement process of the ramp plate body 31.

[0070] The utility model improves the shortcomings of the existing manually pull-out ramp and significantly improves the convenience and safety of the auxiliary boarding device, which is specifically reflected in the following aspects:

[0071] First, through the integrated drive assembly 40, the deployment and retraction process of the ramp is completely driven by electricity, without the need for human intervention, which greatly reduces the physical burden on users and assistants and improves the convenience and efficiency of operation.

[0072] Secondly, the torque sensor 52 and control module 51 in the electronic clutch mechanism 50 can be used to precisely control the drive motor 43. When the ramp is blocked and the torque is greater than the set value, the machine will automatically stop, ensuring the smoothness and safety of the ramp during movement and avoiding accidental injuries caused by improper operation.

[0073] Furthermore, the manual clutch mechanism 60 in the safety component provides a backup operation mode in emergency situations. Even in the event of a power outage, the ramp can be deployed or retracted through manual operation, thereby enhancing the reliability and emergency response capabilities of the system.

[0074] In addition, the Hall sensor 53 provided on the guide rail 21 can monitor the position of the ramp in real time to ensure that it reaches the predetermined deployment or retraction position accurately, thereby avoiding over-extension or incomplete retraction.

[0075] In particular, the design of the ramp assembly 30 takes into account the flexibility and stability of actual use. For example, the addition of the auxiliary push rod 37, the auxiliary roller 311 and the guide block 80 increases the support force and guidance of the ramp during movement, ensuring the stability and safety of the ramp during use.

[0076] Humanized details: Auxiliary rollers 311 are provided at the connection between the ramp body 31 and the rotating plate 32, as well as a downward-folding door panel 15 and a second auxiliary wheel 151 at the opening of the storage frame 10, further ensuring smooth and comfortable deployment and retraction of the ramp.

[0077] In summary, the present invention improves the original manual ramp, not only realizing the automatic retraction and extension of the ramp, but also further improving the safety of the ramp operation.

[0078] The above is an exemplary description of the present invention in conjunction with the accompanying drawings. It is obvious that the specific implementation of the present invention is not limited to the above-mentioned method. As long as various non-substantial improvements are made using the method concept and technical solution of the present invention, or the concept and technical solution of the present invention are directly applied to other occasions without improvement, they are all within the scope of protection of the present invention.

Claims

1. An intelligent protective electric ramp, characterized in that: include: A storage frame (10) includes two first frames (11) constituting wide sides and two second frames (12) constituting long sides, wherein an installation space (20) is formed inside the storage frame and an opening is formed on one side, wherein the installation space (20) is distinguished from the guide rails (21) formed on both sides of the opening; A ramp assembly (30) is slidably arranged in the installation space (20) along the guide rail (21), and comprises a ramp body (31), a rotating plate (32), a connecting plate (33), and a sliding bracket (34), wherein one side of the rotating plate (32) is rotatably connected to one side of the ramp body (31) and the other side thereof is rotatably connected to one side of the connecting plate (33), the other side of the connecting plate (33) is fixed to the sliding bracket (34), and sliding wheels (35) cooperating with the guide rail (21) are provided on both sides of the sliding bracket (34); A drive assembly (40) is provided in the installation space (20), comprising a plurality of drive gears (41), a drive chain (42) meshing and transmitting between the drive gears (41), and a drive motor (43) connected to one of the drive gears (41), wherein the drive chain (42) forms a waist-shaped transmission path for overall linear cyclic transmission between the two first frames (11), and the sliding bracket (34) is fixed to the drive chain (42) and can move along the extension direction of the guide rail (21) under the drive of the drive chain (42); A safety component, comprising an electronic clutch mechanism (50) and a manual clutch mechanism (60), for controlling the clutch state between the drive motor (43) and the drive gear (41); The electronic clutch mechanism (50) comprises a control module (51) and a torque sensor (52), wherein the torque sensor (52) is electrically connected to an input end of the control module (51), and an output end of the control module (51) is electrically connected to a drive motor (43); The manual clutch mechanism (60) includes a clutch (61) that is transmission-connected to the output shaft of the drive motor (43) and the drive gear (41), a clutch pressure rod (62) for controlling the clutch (61), and a control member (63) for controlling the clutch pressure rod (62), wherein the control member (63) is rotatably arranged in the installation space (20) and one end thereof is movably abutted against the clutch pressure rod (62), and the other end of the control member (63) is connected to a control rope, and the control rope extends to one side of the opening of the storage frame (10).

2. The intelligent protective electric ramp according to claim 1, characterized in that: The sliding bracket (34) includes a fixed frame (341) parallel to the connecting plate (33), a side frame (342) perpendicular to both ends of the fixed frame (341) and extending parallel to the same side, and a connecting frame (343) provided on one side of the fixed frame (341) and parallel to the side frame (342). The connecting plate (33) is in parallel contact with the fixed frame (341) and is locked and fixed. The sliding wheel (35) is provided on the side of the two side frames (342) away from each other.

3. The intelligent protective electric ramp according to claim 2, characterized in that: The distance between the two sides of the ramp plate body (31) is equal to the distance between the two sliding wheels (35), and the distance between the two sides of the connecting plate (33) and the rotating plate (32) is less than the length of the fixing frame (341) so that a clearance area (36) is formed between the fixing frame (341) and the ramp plate body (31). A pair of auxiliary push rods (37) perpendicular to the fixing frame (341) are fixed at both ends of the fixing frame (341) extending toward the clearance area (36).

4. The intelligent protective electric ramp according to claim 1, characterized in that: The guide rail (21) is provided with a plurality of Hall sensors (53) along its extension direction. The plurality of Hall sensors (53) are electrically connected to the input end of the control module (51) and are used to sense the movement position of the ramp body (31).

5. The intelligent protective electric ramp according to claim 1, characterized in that: The storage frame (10) is provided with a support frame (70) on one side of the opening, and a movable end of the control rope is provided with a button that can be moved on the support frame (70). A plurality of wire plates (71) are provided on the side of the storage frame (10) and in the installation space (20), and a wire groove (72) is provided on the wire plate (71) for the control rope to pass through.

6. The intelligent protective electric ramp according to claim 1, characterized in that: Auxiliary rollers (311) are symmetrically provided on both sides of the connection position between the ramp plate body (31) and the rotating plate (32).

7. The intelligent protective electric ramp according to claim 6, characterized in that: The guide rail (21) is provided with a guide block (80) at a top position close to the opening of the installation space (20), and a guide groove (81) with an opening facing downward is concavely provided on the lower end surface of the guide block (80). The structure of the guide groove (81) enables the rear end of the ramp body (31) to move upward and downward in sequence when passing through the opening of the installation space (20).

8. The intelligent protective electric ramp according to claim 1, characterized in that: The ramp plate body (31) is symmetrically provided with first auxiliary wheels (312) at both ends thereof on a side away from the connecting plate (33); the storage frame (10) is provided with a downward-flipping door panel (15) at an opening position of the installation space (20); and second auxiliary wheels (151) capable of rolling contact with the lower end surface of the ramp plate body (31) are symmetrically provided on the inner side of the door panel (15) and at both sides thereof in the longitudinal direction.

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