Automatic turning slope device of wheelchair lifting platform

Abstract

The utility model relates to the field of barrier-free equipment, in particular to an automatic turning slope device of a wheelchair lifting platform. Comprising a wheelchair lifting platform, a slope plate, a telescopic device and rollers. The slope plate comprises a rotating shaft and a contact surface, the slope plate is hinged to the edge of the bottom of the wheelchair lifting platform through the rotating shaft, the telescopic device is arranged at the bottom of the wheelchair lifting platform, and the roller is hinged to a rod head of the telescopic device and is in rolling connection with the contact surface. Overturning of the slope plate is controlled through stretching and retracting of the telescopic device, in the process that the telescopic device moves from the maximum stroke to the minimum stroke, the slope plate gradually overturns downwards, and when the telescopic device does not act and the slope plate touches the ground and stops moving, the idler wheels leave the contact face, the telescopic device is not hindered in movement, and the safety of the device is improved. Therefore, mechanism damage is avoided. The wheelchair lifting platform is simple in structure, low in manufacturing cost and light and small in overall weight, so that the wheelchair lifting platform has more weight, space and cost redundancy.

Description

Technical Field

[0001] The utility model relates to the field of barrier-free equipment, in particular to an automatic flip slope device for a wheelchair lifting platform. Background Art

[0002] Wheelchair lifts are mainly used to move wheelchair users from one plane to another plane of different height, such as from the road to the inside of a vehicle. Since the bottom of the wheelchair lift has a certain thickness, a ramp is required to enable the wheelchair to smoothly board the wheelchair lift. The ramp can be lowered when in use and retracted when the wheelchair lift moves to avoid interference. To ensure that wheelchair users can use the wheelchair lift independently, the ramp is usually equipped with an automatic lifting function.

[0003] In practical applications, taking the use scenario from the road surface to the interior of the vehicle as an example, the wheelchair lifting platform needs to be applicable to various complex road surfaces with different flatness and slopes. When using the existing automatic ramp, there will be problems such as the ramp cannot be completely lowered to the ground or the ramp has already touched the ground but the retracting mechanism is still working, resulting in damage to the mechanism. In addition, the existing automatic ramp has a complex structure, high cost, large volume, and large assembly mass. Installing it on the wheelchair lifting platform will increase the movement burden of the platform and create safety hazards.

[0004] The Chinese patent with publication number CN215255538U discloses an electric push rod hangar door opening device and hangar structure, including: a hangar shell, a hangar flip door and an electric push rod component; the hangar flip door is hinged with the hangar shell, the electric push rod component is arranged in the hangar shell, the electric push rod component is connected with the hangar flip door, and the electric push rod component is configured to drive the hangar flip door to flip relative to the hangar shell so that the hangar flip door contacts the ground. In the specific implementation process of this patented technology, it is easy to encounter problems such as the hangar door cannot contact the ground due to uneven ground flatness, slope or obstacles, or the hangar door has contacted the ground but the electric push rod is still working, resulting in damage to the mechanism.

[0005] The Chinese patent with publication number CN211731159U discloses a lifting mechanism of an electric ramp, which includes a slide rail, a lifting pad, a ramp and a cover. This patent uses a lifting pad to raise the corresponding position of the slide rail to guide the pulley to slide onto the lifting pad, thereby lifting the connecting plate, the ramp and the cover in sequence, so that the angle between the cover and the ramp is reduced and the slope is gentler. The automatic ramp assembly of this patented technology is complex in structure, occupies a large volume, is heavy, and increases the burden of platform movement.

[0006] Therefore, there is an urgent need to provide an automatic flip slope device for a wheelchair lifting platform, which, compared with the prior art, can meet the needs of being applicable to various complex ground surfaces and has a small size, simple structure and light weight. Utility Model Content

[0007] In order to overcome the problems existing in the prior art, the utility model aims to provide an automatic flip slope device for a wheelchair lifting platform.

[0008] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: an automatic flipping ramp device for a wheelchair lifting platform, comprising a wheelchair lifting platform, a ramp plate, a telescopic device and a roller; the ramp plate comprises a rotating shaft and a contact surface, the ramp plate is hinged to the bottom edge of the wheelchair lifting platform through the rotating shaft, the telescopic device is arranged at the bottom of the wheelchair lifting platform, the roller is arranged at the end of the telescopic rod of the telescopic device, and is rollingly connected to the contact surface.

[0009] The utility model is further configured as follows: the ramp plate also includes a pedal, one end of the pedal contacts the ground when the ramp plate is in working state, and the other end is connected to the contact surface, and the contact surface is configured as a plane.

[0010] It should be noted that when the wheelchair can climb onto the wheelchair lifting platform via the ramp, the ramp is in a working state.

[0011] The utility model is further configured as follows: the rotating shaft is arranged above the pedal on one side close to the wheelchair lifting platform, the axis position of the rotating shaft is spaced a first distance from the contact position between the contact surface and the roller, and the first distance and the torque generated by the ramp plate's own gravity can enable the ramp plate to maintain a downward flipping trend at any angle.

[0012] The utility model is further configured as follows: the automatic flip slope device of the wheelchair lifting platform is also provided with a guide seat, the guide seat is arranged at the bottom of the wheelchair lifting platform, and the guide seat is slidably connected with the telescopic device.

[0013] The utility model is further configured as follows: the telescopic device stroke is configured such that when the telescopic device reaches a maximum stroke, the upper portion of the roller contacts the center of the contact surface; when the telescopic device reaches a minimum stroke, the ramp plate swings downward with an amplitude greater than 100 degrees and less than 130 degrees.

[0014] The utility model is further configured such that: the position of the roller can ensure that when the telescopic device reaches a maximum stroke value, the contact surface turns upward to reach a horizontal state.

[0015] The utility model is further configured as follows: the automatic flip slope device of the wheelchair lifting platform also includes a control panel, the control panel is electrically connected to the telescopic device, the control panel is arranged above the wheelchair lifting platform, and the control panel includes a first button, a second button and an emergency stop button.

[0016] The first button is used to control the telescopic device to stop after running to the maximum stroke; the second button is used to control the telescopic device to stop after running to the minimum stroke; when the emergency stop button is pressed and locked, the telescopic device stops immediately, and the first button and the second button become invalid; when the emergency stop button is in the unlocked state, the first button and the second button take effect.

[0017] It should be noted that the energy of the control panel and the telescopic device described in the utility model comes from the wheelchair lifting platform.

[0018] In summary, the beneficial effects of the above technical solution of the utility model are as follows:

[0019] (1) The utility model controls the flipping of the ramp plate by telescoping the telescopic device. When the telescopic device moves from the maximum stroke to the minimum stroke, the ramp plate gradually flips downward. When the telescopic device stops moving when the ramp plate hits the ground before the action is completed, the roller leaves the contact surface, and the movement of the telescopic device is not hindered, thereby avoiding damage to the mechanism.

[0020] (2) The utility model realizes the automatic flipping function through the telescopic device, rollers, guide grooves and ramp plates. It has a simple structure, low cost, and is lightweight and miniaturized as a whole, so that the wheelchair lifting platform has more redundancy in weight, space and cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for describing the embodiments are briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0022] Figure 1 It is a schematic side view of the utility model in which the ramp plate is fully flipped up.

[0023] Figure 2 It is a schematic side view of the utility model when the ramp plate is fully lowered.

[0024] Figure 3 It is a schematic diagram of a partial side view of the ramp plate of the utility model in an obstructed state.

[0025] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0026] 1. Ramp; 1.1. Contact surface; 1.2. Rotating shaft; 1.3. Pedal; 2. Roller; 3. Guide seat; 4. Electric push rod; 5. Wheelchair lifting platform; 6. Control panel; 6.1. First button; 6.2. Second button; 6.3. Emergency stop button; 10. Ground. DETAILED DESCRIPTION

[0027] In order to enable those skilled in the art to better understand the technical solution of the present invention, the following is a clear and complete description of the technical solution of the present invention in conjunction with the drawings of the present invention. Based on the embodiments of the present invention, other similar embodiments obtained by ordinary technicians in the field without creative work should all fall within the scope of protection of the present invention. In addition, the directional words mentioned in the following embodiments, such as "up", "down", "left", "right", etc., are only referenced to the directions of the drawings. Therefore, the directional words used are used to illustrate rather than limit the creation of the present invention.

[0028] The utility model is further described below in conjunction with the accompanying drawings and preferred embodiments.

[0029] like Figure 1 , Figure 2 As shown, it is a preferred embodiment of the utility model, a wheelchair lifting platform automatic flip slope device, including a wheelchair lifting platform 5, a ramp plate 1, a telescopic device and a roller 2.

[0030] In this embodiment, the telescopic device is selected to be an electric push rod 4.

[0031] The ramp 1 includes a rotating shaft 1.2 and a contact surface 1.1. The ramp 1 is hinged to the bottom edge of the wheelchair lifting platform 5 through the rotating shaft 1.2. The electric push rod 4 is arranged at the bottom of the wheelchair lifting platform 5. The roller 2 is hinged to the rod head of the electric push rod 4 and is rollingly connected with the contact surface 1.1. The ramp also includes a pedal 1.3. One end of the pedal 1.3 contacts the ground 10 when the ramp 1 is in working state, and the other end is connected with the contact surface 1.1. The contact surface 1.1 is set as a plane. It should be noted that when a wheelchair can pass through the ramp 1 climbs onto the wheelchair lifting platform 5, the ramp board 1 is in working state; the rotating shaft 1.2 is arranged above the pedal 1.3 on the side close to the wheelchair lifting platform 5, the axis position of the rotating shaft 1.2 is spaced a first distance from the contact position between the contact surface 1.1 and the roller 2, and the first distance and the torque generated by the self-gravity of the ramp board 1 can make the ramp board 1 maintain a downward turning trend at any angle; the wheelchair lifting platform automatic turning ramp device is also provided with a guide seat 3, the guide seat 3 is arranged at the bottom of the wheelchair lifting platform 5, and the guide seat 3 is connected to the The electric push rod 4 is slidably connected; the stroke of the electric push rod 4 is set to that when the electric push rod reaches the maximum stroke, the upper part of the roller 2 contacts the center of the contact surface 1.1; when the electric push rod 4 reaches the minimum stroke, the ramp plate 1 swings downward with an amplitude greater than 100 degrees and less than 130 degrees; the position of the roller 2 can ensure that when the electric push rod 4 reaches the maximum stroke, the contact surface 1.1 flips upward to a horizontal state; the automatic flipping ramp device of the wheelchair lifting platform also includes a control panel 6, which is electrically connected to the electric push rod 4, and the control panel 6 is electrically connected to the electric push rod 4. A panel 6 is arranged above the wheelchair lifting platform 5, and the control panel 6 includes a first button 6.1, a second button 6.2 and an emergency stop button 6.3; after the first button 6.1 is pressed, the electric push rod 4 stops after running to the maximum stroke; after the second button 6.2 is pressed, the electric push rod stops after running to the minimum stroke; when the emergency stop button 6.3 is pressed and locked, the electric push rod 4 stops immediately, and the first button 6.1 and the second button 6.2 become invalid; when the emergency stop button 6.3 is in an unlocked state, the first button 6.1 and the second button 6.2 take effect.

[0032] During the operation of the automatic tilting ramp device of the wheelchair lifting platform, if Figure 1-Figure 3 As shown, when the wheelchair lifting platform 5 approaches the ground 10, the ramp 1 is in a flipped-up state, at which time the electric push rod 4 is at its maximum stroke, the roller 2 is located in the center of the contact surface 1.1, the ramp 1 is blocked by the roller 2 and cannot flip downward, and the guide seat 3 provides support and guidance for the long rod of the electric push rod 4.

[0033] After the wheelchair lifting platform 5 approaches the ground 10 and stops, the user presses the second button 6.2 on the control panel 6, the electric push rod 4 begins to shrink, driving the roller 2 to move to the left, and the ramp board 1 flips downward around the rotating shaft 1.2. After the ramp board 1 contacts the ground 10, the ramp board 1 stops moving, and the roller 2 leaves the contact surface 1.1 under the action of the electric push rod 4 and continues to move to the left until the electric push rod 4 runs to the minimum stroke and stops. At this time, the user can push the wheelchair onto the wheelchair lifting platform 5 through the pedal 1.3.

[0034] When the wheelchair lifting platform 5 is about to leave the ground 10, the user presses the first button 6.1 on the control panel 6, the electric push rod 4 begins to extend, driving the roller 2 to move to the right, and the roller 2 contacts the contact surface 1.1 and pushes the ramp plate 1 to flip upward around the rotation axis 1.2 until the electric push rod 4 stops running at the maximum stroke. At this time, the ramp plate remains in the flipped-up state, and the wheelchair lifting platform 5 can proceed to the next action.

[0035] When the electric push rod 4 and the ramp board 1 cause danger during the movement, the user presses the emergency stop button 6.3, the emergency stop button 6.3 is locked, the electric push rod 4 stops moving, and the ramp board 4 stops moving, and the first button 6.1 and the second button 6.2 become invalid. After the danger is eliminated, the user unlocks the emergency stop button 6.3 and uses the first button 6.1 and the second button to make the electric push rod 4 and the ramp board 1 continue to move.

[0036] In summary, the utility model provides an automatic flip ramp device for a wheelchair lifting platform, which can improve the existing technology, such as the ramp plate cannot be completely put on the ground or the ramp plate has touched the ground but the retracting mechanism is still working, resulting in damage to the mechanism. In addition, the existing automatic ramp plate has a complex structure, high cost, large volume, and large assembly mass. If it is installed on the wheelchair lifting platform, it will increase the movement burden of the platform and cause safety hazards.

[0037] Finally, it should be noted that the above content is only used to illustrate the technical solution of the utility model, rather than to limit the protection scope of the utility model. Simple modifications or equivalent substitutions of the technical solution of the utility model by ordinary technicians in this field do not deviate from the essence and scope of the technical solution of the utility model.

Claims

1. A wheelchair lifting platform automatic flip slope device, characterized in that: It includes a wheelchair lifting platform, a ramp, a telescopic device and a roller; the ramp includes a rotating shaft and a contact surface, the ramp is hinged to the bottom edge of the wheelchair lifting platform through the rotating shaft, the telescopic device is arranged at the bottom of the wheelchair lifting platform, the roller is arranged at the end of the telescopic rod of the telescopic device and is rollingly connected with the contact surface.

2. The automatic tilting ramp device for a wheelchair lifting platform according to claim 1, characterized in that: The ramp plate further comprises a pedal, one end of which contacts the ground when the ramp plate is in working state, and the other end of which is connected to the contact surface, and the contact surface is set to be a plane.

3. The automatic tilting ramp device for a wheelchair lifting platform according to claim 2, characterized in that: The rotating shaft is arranged above the pedal on a side close to the wheelchair lifting platform, and the axis position of the rotating shaft is spaced a first distance from the contact position between the contact surface and the roller. The first distance and the torque generated by the ramp plate's own gravity can keep the ramp plate in a downward flipping trend at any angle.

4. The automatic tilting ramp device for a wheelchair lifting platform according to claim 1, characterized in that: The automatic flip slope device of the wheelchair lifting platform is also provided with a guide seat, which is arranged at the bottom of the wheelchair lifting platform and is slidably connected with the telescopic device.

5. The automatic tilting ramp device for a wheelchair lifting platform according to claim 1, characterized in that: The travel of the telescopic device is set so that when the telescopic device reaches the maximum travel value, the upper part of the roller contacts the center of the contact surface; when the telescopic device reaches the minimum travel value, the ramp plate swings downward with an amplitude greater than 100 degrees and less than 130 degrees.

6. The automatic tilting ramp device for a wheelchair lifting platform according to claim 1, characterized in that: The position of the roller can ensure that when the telescopic device reaches the maximum stroke, the contact surface flips upward to reach a horizontal state.

7. The automatic tilting ramp device for a wheelchair lifting platform according to claim 1, characterized in that: The automatic flip slope device of the wheelchair lifting platform also includes a control panel, which is electrically connected to the telescopic device and is arranged above the wheelchair lifting platform. The control panel includes a first button, a second button and an emergency stop button.

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