Barrier-free passing device for movable square cabin

Abstract

The invention discloses a barrier-free passing device for a movable square cabin. The barrier-free passing device comprises a cabin door arranged at an exit of the movable square cabin, a power assembly arranged in the movable square cabin, a transfer assembly in transmission connection with the power assembly and a ramp assembly arranged on the transfer assembly. By arranging the power assembly, when the cabin door opening, closing and stretching functions are completed, the lifting function is synchronously achieved through a single power source, the operation steps of personnel are effectively saved, the operation speed of the device is increased, and then the transfer efficiency of the shelter is improved; by arranging the transferring assembly, the disabled on the ground is transferred into the square cabin in a lifting mode, and a wheelchair used by the disabled is synchronously limited and fixed in the transferring process; by arranging the ramp assembly, the situation that the wheelchair is blocked when entering the transfer assembly is further reduced, and meanwhile the body position of the disabled person is synchronously subjected to steering adjustment.

Description

Technical Field

[0001] The invention relates to the technical field of barrier-free passage, in particular to a barrier-free passage device for a mobile cabin. Background Art

[0002] The Fangcang shelter hospital with barrier-free access is an innovative solution that combines autonomous driving technology with mobile medical services, aiming to provide safe, convenient and comfortable medical services to all users, especially disabled people who rely on wheelchairs. This type of Fangcang shelter hospital can not only move autonomously in various environments, but also has a specially designed barrier-free access system to ensure that disabled people can enter and exit smoothly and receive necessary medical support.

[0003] After searching, the Chinese patent with publication number CN116549227B includes a cabin body, the inner bottom of the cabin body is provided with a hidden groove at the exit, a push assembly is installed in the hidden groove, two movable ends of the push assembly are jointly provided with a cross seat, a lifting assembly is installed on the cross seat, a lifting support plate is fixedly installed on the movable end of the lifting assembly, and two distance adjustment assemblies are symmetrically installed on the inner wall of one side of the cabin body. By setting the hidden groove, push assembly, cross seat, lifting assembly and lifting support plate, when a disabled person is sitting in a wheelchair to ride in the automatic driving cabin, the lifting support plate can be automatically placed on the ground, which is convenient for the disabled person to move the wheelchair to the lifting support plate, and then the disabled person and the wheelchair are automatically moved to the inside of the cabin through the lifting support plate, making it more convenient for the disabled person to ride in the cabin.

[0004] However, in the above patent, after the disabled person enters the cabin with the help of the lifting assembly, he still needs to move a short distance to ensure that he is on the steering assembly. Only then does the steering and fixing functions of the wheelchair begin. If the cabin suddenly moves during the movement of the disabled person, the wheelchair may easily tip over under inertia. On the other hand, the lifting function, telescopic function and steering and fixing function in the above patent are not linked, and personnel are required to individually control the operating sequence of each function, which leads to cumbersome operating steps. Summary of the invention

[0005] The object of the present invention is to provide a barrier-free passage device for a mobile shelter, which has the advantages of barrier-free passage and self-balancing fixation, and solves the problems raised in the background technology.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a barrier-free passage device for a mobile cabin, comprising a cabin door arranged at the exit of the mobile cabin, a power assembly arranged in the mobile cabin, a transfer assembly transmission-connected to the power assembly, and a ramp assembly arranged on the transfer assembly, wherein the power assembly comprises an opening and closing mechanism for controlling the horizontal movement of the cabin door and a telescopic mechanism for controlling the transfer assembly, wherein the opening and closing mechanism is fixedly connected to the cabin door, and the telescopic mechanism is transmission-connected to the opening and closing mechanism;

[0007] The transfer assembly includes a lifting mechanism for realizing height control and a limiting mechanism for fixing the wheelchair for the disabled person, the lifting mechanism is transmission-connected with the telescopic mechanism, and the limiting mechanism is transmission-connected with the lifting mechanism;

[0008] The ramp assembly includes a flipping mechanism for reducing the resistance of a wheelchair when entering and a steering mechanism for adjusting the direction and position of the wheelchair. The flipping mechanism is arranged on the lifting mechanism, and the steering mechanism is connected to the lifting mechanism in a limited rotation manner.

[0009] Preferably, the opening and closing mechanism includes a driving shaft driven by a motor and fixedly connected to the inner contour of the cabin door, an opening and closing wheel is fixedly connected to the outer contour of the driving shaft, one side of the opening and closing wheel is fixedly connected to a bevel gear 1, and the bevel gear 1 also penetrates through and is fixedly connected to the driving shaft, an opening and closing rack is meshed and transmission-connected on the outer contour of the bevel gear 1, and the opening and closing rack is fixedly connected to the inner wall of the mobile cabin, an end of the opening and closing rack away from the bevel gear 1 is fixedly connected to an extension plate, the extension plate is vertically penetrated and rotatably connected to a positioning shaft, and the positioning shaft is limited and rotatably connected to the inside of the mobile cabin, and a bevel gear 2 is fixedly connected to the outer contour of the positioning shaft near the top.

[0010] Preferably, the telescopic mechanism includes a telescopic wheel that passes through and is fixedly connected to the outer contour of the positioning shaft near the bottom end, the lower half of the outer contour of the telescopic wheel is meshed and transmission connected with a telescopic rack, the side of the telescopic rack is fixedly connected with a telescopic plate, the upper surface of the telescopic rack away from one end of the telescopic wheel is fixedly connected with a bracket, one side of the bracket passes through and is limitedly rotatably connected with a transmission wheel 1, and the transmission wheel 1 is meshed with the upper half of the outer contour of the telescopic wheel, the top of the transmission wheel 1 is fixedly connected with a transmission wheel 2, and the transmission wheel 2 also passes through and is limitedly rotatably connected with the bracket.

[0011] Preferably, a counterweight block for maintaining the balance of the telescopic plate is arranged inside the end of the telescopic plate away from the telescopic wheel.

[0012] Preferably, the lifting mechanism includes a chain meshed and transmission connected to the second outer contour of the transmission wheel, the other end of the chain is meshed and transmission connected to the lifting wheel, the axis of the lifting wheel is penetrated by and screwed with a lifting screw, the bottom end of the lifting screw is fixedly connected to a transfer platform on the inner contour of the telescopic plate and is slidably connected to a limited position, a turning hole is opened on the surface of the transfer platform, and the upper surface of the transfer platform is fixedly connected to a limited position frame.

[0013] Preferably, the limiting mechanism includes a sleeve fixedly connected to the upper surface of the lifting wheel and sleeved on the outside of the lifting screw rod, a winding rope is wound on the outer contour of the sleeve, the winding rope passes through and is limitedly slidably connected to the inside of the limit frame, the outer contour of the winding rope is once-transmission-connected with guide wheel 1 and guide wheel 2, and guide wheel 1 and guide wheel 2 both pass through and are limitedly rotatably connected to the outer contour of the limit frame, the other end of the winding rope is fixedly connected to a limiting plate located inside the limit frame, and a reset spring is fixedly connected between the limiting plate and the inner contour of the limit frame.

[0014] Preferably, the flipping mechanism includes a base fixedly connected to both sides of the top of the transfer platform, both sides of the opposite surfaces of the base are fixedly connected to limit pins, a fixing pin is fixedly connected to the inner contour of the transfer platform at a middle position between the two limit pins, a compression spring is fixedly connected to the outer contour of the fixing pin, the other end of the compression spring is connected to a sway bar for limited rotation, the middle section of the sway bar is penetrated by and is connected to a positioning block for limited rotation through a pin shaft, and the pin shaft of the positioning block extends outwardly, penetrates through and is limitedly rotated and connected to the top of the opposite surface of the base, the opposite surface of the positioning block is fixedly connected to the same slope surface, and both ends of the positioning block away from the slope surface are fixedly connected to positioning pins.

[0015] Preferably, the steering mechanism includes a turntable which is limitedly rotatably connected to the inner contour of the steering hole, the axis of the turntable is penetrated by and fixedly connected with a fixed shaft extending downward, a ratchet is fixedly connected to the outer contour of the bottom end of the fixed shaft, a gear ring is unidirectionally meshed and transmission connected to the outer contour of the ratchet, the outer contour of the gear ring is meshed and transmission connected to a steering rack, and the steering rack is fixedly connected to the bottom plate of the inner wall of the mobile cabin.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] 1. The present invention provides a power assembly to achieve the functions of lifting and lowering simultaneously through a single power source while completing the functions of opening and closing and retracting the door, thereby effectively saving the operating steps of personnel to increase the operating speed of the device, thereby improving the transportation efficiency of the cabin.

[0018] 2. The present invention provides a transfer component to transfer the disabled person on the ground to the cabin by lifting, and simultaneously limits and fixes the wheelchair used by the disabled person during the transfer process.

[0019] 3. The present invention further reduces the obstruction of the wheelchair when entering the transfer component by providing a ramp component, while simultaneously adjusting the steering position of the disabled person. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the main structure of the present invention;

[0021] Figure 2 It is a cross-sectional view of the main structure of the present invention;

[0022] Figure 3 It is a schematic diagram of the opening and closing mechanism of the present invention;

[0023] Figure 4 It is a schematic diagram of the telescopic mechanism of the present invention;

[0024] Figure 5 It is a schematic diagram of the lifting mechanism of the present invention;

[0025] Figure 6 It is a schematic diagram of the limiting mechanism of the present invention;

[0026] Figure 7 It is a schematic diagram of the flipping mechanism of the present invention;

[0027] Figure 8 It is a schematic diagram of the steering mechanism of the present invention;

[0028] Fig. 9 It is the overall workflow diagram of the present invention.

[0029] In the figure: 1. hatch; 2. drive shaft; 21. opening and closing wheel; 22. bevel gear one; 23. opening and closing rack; 24. extension plate; 25. positioning shaft; 26. bevel gear two; 3. telescopic wheel; 31. telescopic rack; 32. telescopic plate; 33. bracket; 34. transmission wheel one; 35. transmission wheel two; 4. chain; 41. lifting wheel; 42. lifting screw rod; 43. transfer platform; 44. steering hole; 45. limit frame; 5. sleeve; 51. winding rope; 52. guide wheel one; 53. guide wheel two; 54. limit plate; 55. reset spring; 6. base; 61. limit pin; 62. fixed pin; 63. compression spring; 64. yaw rod; 65. positioning block; 66. slope; 67. positioning pin; 7. turntable; 71. fixed shaft; 72. ratchet; 73. gear ring; 74. steering rack. DETAILED DESCRIPTION

[0030] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0031] Embodiment 1:

[0032] See also Figures 1 to 9 The present invention provides a technical solution: a barrier-free passage device for a mobile cabin, comprising a cabin door 1 arranged at the exit of the mobile cabin, a power assembly arranged in the mobile cabin, a transfer assembly transmission-connected to the power assembly, and a ramp assembly arranged on the transfer assembly, wherein the power assembly comprises an opening and closing mechanism for controlling the horizontal movement of the cabin door 1 and a telescopic mechanism for controlling the transfer assembly, the opening and closing mechanism is fixedly connected to the cabin door 1, and the telescopic mechanism is transmission-connected to the opening and closing mechanism;

[0033] The transfer assembly includes a lifting mechanism for realizing height control and a limiting mechanism for fixing the wheelchair for the disabled person, the lifting mechanism is transmission-connected with the telescopic mechanism, and the limiting mechanism is transmission-connected with the lifting mechanism;

[0034] The ramp assembly includes a flipping mechanism for reducing the resistance of a wheelchair when entering and a steering mechanism for adjusting the direction and position of the wheelchair. The flipping mechanism is arranged on the lifting mechanism, and the steering mechanism is connected to the lifting mechanism in a limited rotation manner.

[0035] In this device, the opening and closing mechanism is driven by a single power source, and the opening and closing mechanism realizes the horizontal sliding of the cabin door 1 to complete the opening and closing process of the mobile cabin, and then further drives the telescopic mechanism to realize the extension and retraction process of the barrier-free passage device. After the telescopic mechanism is extended to the maximum stroke, it automatically switches to the lifting mechanism, and the lifting mechanism is further lowered to the ground. At this time, the disabled person enters the lifting mechanism by himself.

[0036] When a disabled person enters the lifting mechanism, the flipping mechanism works synchronously to reduce the resistance encountered by the wheelchair when climbing the slope. At the same time, the wheelchair automatically flips after entering to realize the limit function of the wheelchair. Then the wheelchair is reset along with the lifting mechanism and the telescopic mechanism to realize the transfer function.

[0037] During the resetting process of the telescopic mechanism, the steering mechanism works synchronously and rotates the direction of the wheelchair by 180° to ensure that the disabled person faces the cabin door 1 and thus helps the wheelchair to get off the vehicle. On the other hand, during the lifting process of the lifting mechanism, the limiting mechanism works synchronously to limit and fix the wheelchair by squeezing and clamping it, and at the same time further adjusts the direction of the wheelchair to face the exit, further alleviating the problem of greater resistance to getting off the vehicle due to the difficulty of autonomous steering of the wheelchair.

[0038] Embodiment 2:

[0039] See also Figure 3-Figure 4 This embodiment further illustrates the following on the basis of the first embodiment:

[0040] The opening and closing mechanism includes a driving shaft 2 driven by a motor and fixedly connected to the inner contour of the cabin door 1, an opening and closing wheel 21 is fixedly connected to the outer contour of the driving shaft 2, a bevel gear 22 is fixedly connected to one side of the opening and closing wheel 21, and the bevel gear 22 also penetrates and is fixedly connected to the driving shaft 2, an opening and closing rack 23 is meshed and transmission-connected on the outer contour of the bevel gear 22, and the opening and closing rack 23 is fixedly connected to the inner wall of the mobile cabin, an end of the opening and closing rack 23 away from the bevel gear 22 is fixedly connected to an extension plate 24, the extension plate 24 is vertically penetrated and rotatably connected to a positioning shaft 25, and the positioning shaft 25 is limitedly rotatably connected to the inside of the mobile cabin, and a bevel gear 26 is fixedly connected to the outer contour of the positioning shaft 25 near the top.

[0041] The telescopic mechanism includes a telescopic wheel 3 that passes through and is fixedly connected to the outer contour of the positioning shaft 25 near the bottom end, the lower half of the outer contour of the telescopic wheel 3 is meshed and transmission-connected with a telescopic rack 31, the side of the telescopic rack 31 is fixedly connected with a telescopic plate 32, the upper surface of the telescopic rack 31 away from the end of the telescopic wheel 3 is fixedly connected with a bracket 33, one side of the bracket 33 passes through and is limitedly rotatably connected with a transmission wheel 1 34, and the transmission wheel 1 34 is meshed with the upper half of the outer contour of the telescopic wheel 3, the top of the transmission wheel 1 34 is fixedly connected with a transmission wheel 2 35, and the transmission wheel 2 35 also passes through and is limitedly rotatably connected with the bracket 33.

[0042] A counterweight block for maintaining the balance of the telescopic plate 32 is arranged inside the end of the telescopic plate 32 away from the telescopic wheel 3 .

[0043] It can be seen from Example 1 that when the motor drives the driving shaft 2 to rotate clockwise, the opening and closing of the cabin door 1 and the extension of the telescopic mechanism are realized. When the driving shaft 2 rotates clockwise, the opening and closing wheel 21 and the bevel gear 22 rotate synchronously. Since the opening and closing rack 23 is meshed with the opening and closing wheel 21, and the opening and closing rack 23 is fixedly connected to the inside of the mobile cabin, that is, the position of the opening and closing rack 23 is fixed, the rotation of the opening and closing wheel 21 will drive the bevel gear 22, the driving shaft 2 and the cabin door 1 to move horizontally synchronously along the direction of the opening and closing rack 23, thereby realizing the opening process of the cabin door 1. At this time, the mobile cabin is in an open state.

[0044] When the opening and closing wheel 21 drives the cabin door 1 to move horizontally to the maximum stroke, the opening and closing wheel 21 is disengaged from the opening and closing rack 23. At this time, the bevel gear 1 22 is meshed with the bevel gear 2 26 and is transmission connected, that is, the continued clockwise rotation of the drive shaft 2 will drive the positioning shaft 25 and the telescopic wheel 3 to rotate synchronously via the bevel gear 2 26. Since the opening and closing wheel 21 is disengaged from the opening and closing rack 23, the rotation of the opening and closing wheel 21 will not be affected by the opening and closing rack 23 to change the horizontal position of the cabin door 1, and the mobile cabin will still remain in the open state.

[0045] Furthermore, the telescopic wheel 3 rotates synchronously with the bevel gear 22, and further drives the telescopic rack 31 and the telescopic plate 32 to extend from the inside of the mobile cabin, and the transfer assembly and the ramp assembly extend synchronously to achieve the extension process of the barrier-free passage state.

[0046] It should be noted that, with the continuous extension of the telescopic rack 31 and the telescopic plate 32, when the telescopic wheel 3 disengages from the telescopic rack 31, the movement of the telescopic rack 31 and the telescopic plate 32 stops, and the transfer assembly and the ramp assembly are synchronously extended to the maximum stroke. Subsequently, the telescopic wheel 3 engages with the transmission wheel 1 34 and further drives the transmission wheel 1 34 and the transmission wheel 2 35 to rotate synchronously. When the telescopic plate 32 is extended to the maximum stroke and stops moving, the counterweight block inside the telescopic plate 32 can effectively maintain the horizontal state of the telescopic plate 32 and the transfer assembly, thereby improving the transfer quality of the device.

[0047] Embodiment three:

[0048] See also Figure 5-Figure 6 This embodiment further illustrates the following on the basis of the second embodiment:

[0049] The lifting mechanism includes a chain 4 meshed and transmission-connected to the outer contour of the transmission wheel 35, the other end of the chain 4 meshed and transmission-connected to a lifting wheel 41, the axis of the lifting wheel 41 is penetrated by and screwed with a lifting screw 42, the bottom end of the lifting screw 42 is fixedly connected to a transfer platform 43 on the inner contour of the telescopic plate 32 with a limited position sliding connection, a steering hole 44 is opened on the surface of the transfer platform 43, and the upper surface of the transfer platform 43 is fixedly connected to a limited position frame 45.

[0050] The limiting mechanism includes a sleeve 5 fixedly connected to the upper surface of the lifting wheel 41 and sleeved on the outside of the lifting screw rod 42, a winding rope 51 is wound on the outer contour of the sleeve 5, the winding rope 51 passes through and is limitedly slidably connected to the inside of the limit frame 45, the outer contour of the winding rope 51 is connected to a guide wheel 1 52 and a guide wheel 2 53 for transmission, and the guide wheel 1 52 and the guide wheel 2 53 both pass through and are limitedly rotatably connected to the outer contour of the limit frame 45, the other end of the winding rope 51 is fixedly connected to a limiting plate 54 located inside the limit frame 45, and a reset spring 55 is fixedly connected between the limiting plate 54 and the inner contour of the limit frame 45.

[0051] It can be seen from the second embodiment that the clockwise rotation of the drive shaft 2 realizes the opening of the hatch 1, and after the hatch 1 is opened, the extension of the telescopic plate 32 is further realized. Subsequently, the telescopic wheel 3 meshes with the transmission wheel 1 34 and drives the transmission wheel 1 34 and the transmission wheel 2 35 to rotate synchronously, and the transmission wheel 2 35 further drives the chain 4 and the lifting wheel 41 to rotate synchronously. Since the lifting screw rod 42 is fixedly connected to the transfer platform 43, the transfer platform 43 is limited by the telescopic plate 32, that is, the screw connection between the lifting screw rod 42 and the lifting wheel 41 will drive the lifting screw rod 42 and the transfer platform 43 to descend synchronously under the rotation of the lifting wheel 41 until the transfer platform 43 contacts the ground, and at this time the ramp assembly is synchronously lowered to the ground.

[0052] At the same time, during the lowering process of the lifting mechanism, the limiting mechanism works synchronously, the lifting wheel 41 drives the sleeve 5 to rotate synchronously, and the sleeve 5 reels the reeling rope 51 synchronously. At this time, the reeling rope 51 slides inside the limiting frame 45 and is further pulled by the guide wheel 1 52 and the guide wheel 2 53 to move the limiting plate 54 toward the inner wall of the limiting frame 45. At the same time, the reset spring 55 is gradually compressed, and the distance between the two limiting plates 54 is continuously increased to ensure that the wheelchair can smoothly enter the inside of the limiting frame 45.

[0053] Subsequently, when the lifting mechanism is lifted, the sleeve 5 continuously releases the winding rope 51. At this time, the limit plate 54 gradually approaches under the rebound action of the return spring 55 to achieve squeezing and clamping the wheelchair, thereby completing the limit fixation of the wheelchair to reduce the risk of the wheelchair shaking when the mobile cabin is traveling; and because it is difficult for the wheelchair to turn autonomously, the disabled person may be in a diagonal direction when entering the limit frame 45. At this time, the clamping of the two limit plates 54 can further adjust the orientation angle of the wheelchair to make it in the opposite direction to facilitate the subsequent getting off process.

[0054] Embodiment 4:

[0055] See also Figure 7-Figure 8 This embodiment further illustrates the following on the basis of the third embodiment:

[0056] The flipping mechanism includes a base 6 fixedly connected to both sides of the top of the transfer platform 43, and both sides of the opposite surfaces of the base 6 are fixedly connected to limit pins 61, and a fixing pin 62 is fixedly connected to the inner contour of the transfer platform 43 at the middle position of the two limit pins 61, and a compression spring 63 is fixedly connected to the outer contour of the fixing pin 62, and the other end of the compression spring 63 is connected to a deflection rod 64 for limited rotation, and the middle section of the deflection rod 64 is penetrated and connected to a positioning block 65 for limited rotation through a pin shaft, and the pin shaft of the positioning block 65 extends outward, penetrates and is limitedly rotated and connected to the top of the opposite surface of the base 6, and the opposite surface of the positioning block 65 is fixedly connected to the same slope 66, and both ends of the positioning block 65 away from the slope 66 are fixedly connected to positioning pins 67.

[0057] The steering mechanism includes a turntable 7 which is connected to the inner contour of the steering hole 44 for limited rotation. A fixed shaft 71 extending downward is penetrated and fixedly connected at the axis center of the turntable 7. A ratchet 72 is fixedly connected to the outer contour of the bottom end of the fixed shaft 71. A gear ring 73 is unidirectionally meshed and transmission-connected on the outer contour of the ratchet 72. A steering rack 74 is meshed and transmission-connected on the outer contour of the gear ring 73, and the steering rack 74 is fixedly connected to the bottom plate of the inner wall of the mobile cabin.

[0058] When the wheelchair enters the limit frame 45, it needs to pass through the flipping mechanism first. Due to the uncertainty of the stop location of the mobile cabin, there may be a slope difference between the ground and the limit frame 45. At this time, the resistance of the wheelchair entering the limit frame 45 is relatively large. Therefore, the slope design of the slope surface 66 can effectively reduce the resistance of the wheelchair entering the limit frame 45.

[0059] When the wheelchair is located above the slope 66, as the wheelchair moves, the slope 66 is squeezed and its center of gravity is continuously shifted. After the wheelchair passes the middle section of the slope 66, the slope 66 drives the positioning block 65 to deflect synchronously. At this time, the positioning pin 67 located on the outside contacts the deflection rod 64 and drives the deflection rod 64 to deflect synchronously. The bottom end of the deflection rod 64 further pulls the compression spring 63 in the reverse direction to release it. Then the inclination direction of the slope 66 is automatically reversed. The wheelchair can naturally slide on the slope 66 to the inside of the limit frame 45, thereby effectively reducing the resistance encountered by the wheelchair when entering the limit frame 45.

[0060] It should be noted that, during the deflection of the slope 66, the compression spring 63 is pulled by the deflection rod 64 so that it is continuously compressed and then released, and then the compression spring 63 resists the deflection rod 64 when it is reset, so that the slope 66 always maintains an inclined state without external force; in addition, after the wheelchair passes, the inclined surface of the slope 66 can also cooperate with the limit plate 54 to realize the limiting and fixing function of the wheelchair, further improving the stability of the wheelchair when traveling in the mobile cabin.

[0061] On the other hand, the wheelchair needs to pass through the slope 66 again when getting off the vehicle, and at this time the inclination direction of the slope 66 is toward the inside of the limit frame 45. The flip mechanism works again and completes the reset process, thereby effectively alleviating the bumpy feeling of the wheelchair when getting off the vehicle. At the same time, the automatic reset of the flip mechanism can further ensure the continuous working process of the device.

[0062] Furthermore, after the wheelchair enters the limit frame 45 and is fixed in position, the drive shaft 2 rotates in the opposite direction. At this time, the drive shaft 2 drives the lifting mechanism to synchronously lift the wheelchair. When the lifting screw rod 42 and the transfer platform 43 rise to the maximum stroke, the lifting wheel 41 cannot continue to rotate, resulting in that the transmission wheel 2 35 and the transmission wheel 1 34 cannot rotate synchronously with the telescopic wheel 3. That is, the rotation of the transmission wheel 2 35 at this time will cause the transmission wheel 1 34 to move toward the inside of the mobile cabin and make the telescopic rack 31 re-engage with the telescopic wheel 3. At this time, the telescopic rack 31 drives the telescopic plate 32 to realize the contraction process.

[0063] Similarly, when the telescopic plate 32 is retracted to the maximum stroke, the telescopic plate 32 cannot continue to move, resulting in the telescopic wheel 3, bevel gear 2 26 and positioning shaft 25 being unable to continue to rotate. At this time, the rotation of bevel gear 1 22 will cause it to move horizontally again along the direction of the opening and closing rack 23 to complete the reset process. The opening and closing wheel 21, the drive shaft 2 and the cabin door 1 are reset along with the opening and closing wheel 21. At this time, the cabin door 1 is closed to complete the closing operation of the mobile cabin.

[0064] Subsequently, when the transfer platform 43 is retracted back into the mobile cabin along with the telescopic plate 32, the steering mechanism works synchronously. At this time, the ring gear 73 contacts and rotates with the steering rack 74 arranged inside the cabin. The ring gear 73 further drives the ratchet 72, the fixed shaft 71 and the turntable 7 to rotate synchronously. At this time, the wheelchair located on the upper surface of the turntable 7 rotates 180° synchronously, so that the wheelchair is facing the exit of the mobile cabin to facilitate the disabled to get off.

[0065] It should be noted that during the extension of the transfer platform 43, the ring gear 73 will also contact and rotate with the steering rack 74. However, due to the one-way transmission setting between the ratchet 72 and the ring gear 73, the rotation of the ring gear 73 will not drive the ratchet 72 to rotate. That is, the steering mechanism adjusts the direction of the wheelchair only within the contraction stroke of the telescopic mechanism. At this time, the wheelchair is limited and fixed by the limit plate 54, thereby preventing the wheelchair from accidentally tipping over during steering.

[0066] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A barrier-free passage device for a mobile cabin, comprising a door (1) arranged at the exit of the mobile cabin, a power assembly arranged in the mobile cabin, a transfer assembly connected to the power assembly in a transmission manner, and a ramp assembly arranged on the transfer assembly, characterized in that: The power assembly comprises an opening and closing mechanism for controlling the horizontal movement of the cabin door (1) and a telescopic mechanism for controlling the transfer assembly, the opening and closing mechanism being fixedly connected to the cabin door (1), and the telescopic mechanism being transmission-connected to the opening and closing mechanism; The transfer assembly includes a lifting mechanism for realizing height control and a limiting mechanism for fixing the wheelchair for the disabled person, the lifting mechanism is transmission-connected with the telescopic mechanism, and the limiting mechanism is transmission-connected with the lifting mechanism; The ramp assembly includes a flipping mechanism for reducing the resistance of a wheelchair when entering and a steering mechanism for adjusting the direction and position of the wheelchair. The flipping mechanism is arranged on the lifting mechanism, and the steering mechanism is connected to the lifting mechanism in a limited rotation manner.

2. The barrier-free passage device for a mobile shelter according to claim 1, characterized in that: The opening and closing mechanism comprises a driving shaft (2) driven by a motor and fixedly connected to the inner contour of the cabin door (1); an opening and closing wheel (21) is fixedly connected to the outer contour of the driving shaft (2); a bevel gear 1 (22) is fixedly connected to one side of the opening and closing wheel (21); the bevel gear 1 (22) also penetrates through and is fixedly connected to the driving shaft (2); an opening and closing rack (23) is meshed and transmission-connected on the outer contour of the bevel gear 1 (22); the opening and closing rack (23) is fixedly connected to the inner wall of the mobile cabin; an end of the opening and closing rack (23) away from the bevel gear 1 (22) is fixedly connected to an extension plate (24); the extension plate (24) is vertically penetrated through and rotationally connected to a positioning shaft (25); the positioning shaft (25) is rotationally connected to the inside of the mobile cabin; the outer contour of the positioning shaft (25) near the top is fixedly connected to a bevel gear 2 (26).

3. The barrier-free passage device for a mobile shelter according to claim 1, characterized in that: The telescopic mechanism comprises a telescopic wheel (3) penetrating and fixedly connected to the outer contour of the positioning shaft (25) near the bottom end; the lower half of the outer contour of the telescopic wheel (3) is meshed with and transmission-connected to a telescopic rack (31); the side of the telescopic rack (31) is fixedly connected to a telescopic plate (32); the upper surface of the telescopic rack (31) away from the end of the telescopic wheel (3) is fixedly connected to a bracket (33); one side of the bracket (33) penetrates and is rotationally connected to a transmission wheel 1 (34) and the transmission wheel 1 (34) is meshed with the upper half of the outer contour of the telescopic wheel (3); the top of the transmission wheel 1 (34) is fixedly connected to a transmission wheel 2 (35) and the transmission wheel 2 (35) also penetrates and is rotationally connected to the bracket (33).

4. The barrier-free passage device for a mobile shelter according to claim 3, characterized in that: A counterweight block for maintaining the balance of the telescopic plate (32) is arranged inside one end of the telescopic plate (32) away from the telescopic wheel (3).

5. The barrier-free passage device for a mobile shelter according to claim 1, characterized in that: The lifting mechanism comprises a chain (4) meshed with and transmission-connected to the outer contour of the second transmission wheel (35); the other end of the chain (4) is meshed with and transmission-connected to a lifting wheel (41); a lifting screw rod (42) is penetrated through and screwed to the axis of the lifting wheel (41); the bottom end of the lifting screw rod (42) is fixedly connected to a transfer platform (43) on the inner contour of the telescopic plate (32) in a limited sliding manner; a steering hole (44) is provided on the surface of the transfer platform (43); and a limited frame (45) is fixedly connected to the upper surface of the transfer platform (43).

6. The barrier-free passage device for a mobile shelter according to claim 1, characterized in that: The limiting mechanism comprises a sleeve (5) fixedly connected to the upper surface of the lifting wheel (41) and sleeved on the outside of the lifting screw rod (42); a winding rope (51) is wound on the outer contour of the sleeve (5); the winding rope (51) passes through and is limitedly slidably connected to the inside of the limiting frame (45); the outer contour of the winding rope (51) is connected to a guide wheel 1 (52) and a guide wheel 2 (53) in a transmission manner; the guide wheel 1 (52) and the guide wheel 2 (53) both pass through and are limitedly rotatably connected to the outer contour of the limiting frame (45); the other end of the winding rope (51) is fixedly connected to a limiting plate (54) located inside the limiting frame (45); a return spring (55) is fixedly connected between the limiting plate (54) and the inner contour of the limiting frame (45).

7. The barrier-free passage device for a mobile shelter according to claim 1, characterized in that: The flip mechanism comprises a base (6) fixedly connected to both sides of the top of the transfer platform (43), both sides of the opposite surface of the base (6) are fixedly connected to limit pins (61), a fixing pin (62) is fixedly connected to the middle position of the two limit pins (61) on the inner contour of the transfer platform (43), a compression spring (63) is fixedly connected to the outer contour of the fixing pin (62), the other end of the compression spring (63) is connected to a deflection rod (64) for limited rotation, the middle section of the deflection rod (64) is penetrated and connected to a positioning block (65) through a pin shaft for limited rotation, and the pin shaft of the positioning block (65) extends outward, penetrates and is limitedly rotated to the top of the opposite surface of the base (6), the opposite surface of the positioning block (65) is fixedly connected to the same slope surface (66), and both ends of the positioning block (65) away from the slope surface (66) are fixedly connected to positioning pins (67).

8. The barrier-free passage device for a mobile shelter according to claim 1, characterized in that: The steering mechanism comprises a turntable (7) which is connected to the inner contour of the steering hole (44) in a limited rotation manner; a fixed shaft (71) extending downward is penetrated and fixedly connected at the axis of the turntable (7); a ratchet (72) is fixedly connected to the outer contour of the bottom end of the fixed shaft (71); a gear ring (73) is unidirectionally meshed and transmission-connected on the outer contour of the ratchet (72); a steering rack (74) is meshed and transmission-connected on the outer contour of the gear ring (73); and the steering rack (74) is fixedly connected to the bottom plate of the inner wall of the mobile cabin.

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