Wheelchair lifting device for railway vehicle

Abstract

The utility model discloses a wheelchair lifting device for a railway vehicle, which comprises a bearing frame fixed on a vehicle body through an upper bearing seat and a lower bearing seat, a housing and a driving mechanism are fixedly arranged on the bearing frame, the bearing frame is hinged with the upper part of a buffer device, and the lower part of the buffer device is connected with a guide device; the upper portion of the guiding device is connected with the bearing frame through a range extending guide rail, the lower portion of the guiding device is hinged to the platform assembly, and a safety handrail is arranged on the platform assembly. An electric control system and a positioning device are arranged on the bearing frame, and the positioning device corresponds to a limiting hole in the lower bearing seat. The device is simple in structure, convenient to use and small in occupied space, and does not need a hydraulic station; meanwhile, stable and reliable lifting action of the device is ensured.

Description

Technical Field

[0001] The utility model relates to the field of rail transit vehicles, in particular to a wheelchair lifting device for rail vehicles. Background Art

[0002] In rail transit, wheelchair lifts are directly attached to the vehicle body. When a vehicle stops at a station, the lift can be moved outside the vehicle by opening the side doors to lift and lower the wheelchair carrying the disabled person, eliminating the height difference between the platform and the vehicle floor.

[0003] Existing wheelchair lifts are mostly driven by hand-cranked screws or hydraulic cylinders. The former takes up a lot of space and is labor-intensive and time-consuming to operate. The latter is complex and requires a dedicated hydraulic station. Furthermore, the hydraulic system carries the risk of oil leakage, significantly restricting the vehicle's operating environment and affecting its reliability.

[0004] Therefore, it is necessary to develop a new type of wheelchair lifting device for rail vehicles to overcome the above problems. Utility Model Content

[0005] Purpose of the utility model: In view of the shortcomings and defects of the existing technology, the utility model provides a wheelchair lifting device for rail vehicles, which has a simple structure, is easy to use, occupies a small space, and does not require a hydraulic station; at the same time, it ensures that the lifting action of the device is stable and reliable.

[0006] Technical solution: The utility model is a wheelchair lifting device for rail vehicles, which is characterized by: including a load-bearing frame fixed to the vehicle body through upper and lower bearing seats, a cover shell and a driving mechanism are fixedly provided on the load-bearing frame, the load-bearing frame is hingedly connected to the upper part of the buffer device, and the lower part of the buffer device is connected to the guide device; the upper part of the guide device is connected to the load-bearing frame through an extended-range guide rail, and the lower part of the guide device is hingedly connected to the platform assembly, and the platform assembly is provided with a safety handrail; the load-bearing frame is provided with an electric control system and a positioning device, and the positioning device corresponds to the limit hole on the lower bearing seat.

[0007] Wherein, the supporting frame is a high-strength alloy steel welded structure, and the supporting frame is connected to the rail vehicle.

[0008] Among them, the extended-range guide rail is a dual-extended-range linear guide rail structure.

[0009] Wherein, the driving mechanism is a combined structure of a rack and pinion mechanism and a worm gear reducer.

[0010] Wherein, the buffer device is a tension-type gas spring structure.

[0011] Wherein, one end of the buffer device is hingedly connected to the load-bearing frame, and the other end is hingedly connected to the platform component.

[0012] Wherein, the platform component is a four-section structure.

[0013] Beneficial effects: Compared with the existing technology, the utility model has the following significant advantages: the utility model has a simple structure, is easy to use, occupies a small space, and does not require a hydraulic station; it solves the problems of the existing wheelchair lifting device occupying a large space when fixed on the vehicle, insufficient adaptability to the ambient temperature, and some products with complex structures and low reliability, improves the stroke and load-bearing capacity, and at the same time ensures that the lifting action of the device is stable and reliable. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a structural diagram of the utility model;

[0015] In the figure, 1 is the load-bearing frame; 2 is the cover; 3 is the extended-range guide rail; 4 is the driving mechanism; 5 is the guide device; 6 is the platform assembly; 7 is the safety handrail; 8 is the buffer device; 9 is the electronic control system; and 10 is the positioning device. DETAILED DESCRIPTION

[0016] The technical solution of the present utility model is further described below in conjunction with the accompanying drawings and specific implementation methods.

[0017] The utility model relates to a wheelchair lifting device for a rail vehicle, comprising a load-bearing frame 1 fixed to a vehicle body by upper and lower bearing seats, the load-bearing frame 1 being fixedly provided with a cover shell 2 and a driving mechanism 4, the load-bearing frame 1 being hingedly connected to the upper portion of a buffer device 8, the lower portion of the buffer device 8 being connected to a guide device 5; the upper portion of the guide device 5 being connected to the load-bearing frame 1 by a range-extending guide rail 3, the lower portion of the guide device 5 being hingedly connected to a platform assembly 6, the platform assembly 6 being provided with a safety handrail 7; the load-bearing frame 1 being provided with an electric control system 9 and a positioning device 10, the positioning device 10 corresponding to a limiting hole on the lower bearing seat, limiting its rotation when the lifting device is rotated outside the vehicle.

[0018] The load-bearing frame 1 of the present invention is a high-strength alloy steel welded structure, and the load-bearing frame 1 is connected to the rail vehicle. The load-bearing frame 1 adopts a high-strength alloy steel welded structure, so that it can not only meet the load-bearing requirements of the system, but also adapt to the low-temperature use environment requirements of -40°C. It is integrated with a rotating arm, which is hinged to the vehicle and the fixed brackets of each functional component. The load-bearing frame 1 is integrated with a positioning device 10, which is locked and fixed after the lifting device is stored on the vehicle and rotated out of the vehicle to prevent the platform from accidentally rotating during the operation and operation of the train. In order to ensure its corrosion resistance, the surface is painted.

[0019] In order to ensure that the guide device 5 of the present invention has sufficient rigidity and can achieve a larger up and down lifting motion stroke in a smaller vehicle installation space, the extended-range guide rail 3 adopts a double-extended-range linear guide rail structure, the slider is fixed on the load-bearing frame 1, and the guide rail is fixed on the guide column of the platform, and rises and falls together with the platform.

[0020] The drive mechanism 4 of this utility model is a combination of a rack and pinion mechanism and a worm gear reducer. Powered by a low-temperature brushless / servo motor, the worm gear-driven rack and pinion mechanism features a power-off lockout function and manual operation. The electronic control system 9 also takes low-temperature performance into consideration. To ensure safe and reliable operation in outdoor environments, the electronic control system has a protection rating of IP65 or higher.

[0021] The buffer device 8 of the present invention is a tension-type gas spring structure. One end of the buffer device 8 is hingedly connected to the load-bearing frame 1, and the other end is hingedly connected to the platform assembly 6, providing buffering and damping effects during the platform lifting process, thereby improving the comfort of passengers.

[0022] The platform assembly 6 of this utility model is a four-section structure, hingedly connected to the guide device 5. When unfolded, it supports the wheelchair and the assistant. When folded, it can be fixed in a designated space on the vehicle. It is also equipped with an anti-slip device and a safety handrail 7 to prevent the wheelchair from sliding on the platform and provide passengers with a handrail to enhance safety.

[0023] The cover 2 of this utility model conceals the exposed portion of the retracted lifting mechanism, locking it securely to the vehicle, ensuring its aesthetics and safety when not in use and preventing accidental operation by unauthorized personnel. The electronic control system 9 comprises a power supply module, a control unit, an audible and visual warning device, and control panels fixed to the vehicle and the platform, facilitating operator control of the platform from either the vehicle or the platform. Low-temperature adaptability and IP protection rating are fully considered.

[0024] When in use, after the passenger compartment door is opened, the device is unlocked on the vehicle, rotated and pushed out of the vehicle, and then the lifting platform and guardrails are manually unfolded; after the wheelchair is transferred to the platform, the motor drives the platform to rise and fall to achieve the transfer from the platform to the vehicle, and after completing the task, the device is retrieved and fixed to the vehicle in the reverse order. The specific process is as follows:

[0025] When the train stops on the platform and the doors open, the operator uses a special key to unlock the wheelchair lift, which activates the sound and light warning devices. The operator then rotates the device 180° to lock it outside the train. The operator then manually deploys the steps and safety handrails on the platform. The wheelchair user can then transfer to the platform. The operator uses the control buttons on the train or the control device on the platform to lower the platform to the platform height, allowing the wheelchair to disembark. Conversely, the wheelchair can be transferred from the platform to the train. After the lift is used, the platform is folded and stored, removing the external positioning. The lift is then rotated 180° back inside the train, secured to the train using the lock on the device, and the sound and light warning devices deactivate.

[0026] The advantages of the wheelchair lifting device for rail vehicles of the present invention are small storage volume, large lifting travel, small space occupied by the vehicle, compact structure, simple operation, durable fastening, controllable cost, and applicability to various types of rail vehicles and other vehicles. At the same time, during the lifting process, the wheelchair will not roll off due to the tilt of the carrying platform, and the safety is higher.

Claims

1. A wheelchair lifting device for a rail vehicle, characterized in that: The invention comprises a load-bearing frame (1) fixed to a vehicle body via upper and lower bearing seats, a cover (2) and a driving mechanism (4) being fixedly provided on the load-bearing frame (1), the load-bearing frame (1) being hingedly connected to the upper portion of a buffer device (8), and the lower portion of the buffer device (8) being connected to a guide device (5); the upper portion of the guide device (5) being connected to the load-bearing frame (1) via an extended-range guide rail (3), the lower portion of the guide device (5) being hingedly connected to a platform assembly (6), and a safety handrail (7) being provided on the platform assembly (6); the load-bearing frame (1) being provided with an electric control system (9) and a positioning device (10), and the positioning device (10) corresponding to a limit hole on the lower bearing seat.

2. The wheelchair lifting device for a rail vehicle according to claim 1, characterized in that: The supporting frame (1) is a high-strength alloy steel welded structure, and the supporting frame (1) is connected to the rail vehicle.

3. The wheelchair lifting device for a rail vehicle according to claim 1, characterized in that: The range-extending guide rail (3) is a double-range-extending linear guide rail structure.

4. The wheelchair lifting device for a rail vehicle according to claim 1, characterized in that: The driving mechanism (4) is a combined structure of a rack and pinion mechanism and a worm gear reducer.

5. The wheelchair lifting device for a rail vehicle according to claim 1, characterized in that: The buffer device (8) is a tensile gas spring structure.

6. The wheelchair lifting device for a rail vehicle according to claim 5, characterized in that: One end of the buffer device (8) is hingedly connected to the load-bearing frame (1), and the other end is hingedly connected to the platform assembly (6).

7. The wheelchair lifting device for a rail vehicle according to claim 6, characterized in that: The platform component (6) is a four-section structure.

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